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This commit is contained in:
Warky
2025-12-18 22:34:37 +02:00
parent ef5e9bccd0
commit acedc4d4df
403 changed files with 196864 additions and 667 deletions
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187
go.mod
View File

@@ -1,193 +1,24 @@
module git.warky.dev/wdevs/relspecgo
go 1.25.5
go 1.24
require (
4d63.com/gocheckcompilerdirectives v1.3.0 // indirect
4d63.com/gochecknoglobals v0.2.2 // indirect
github.com/4meepo/tagalign v1.4.2 // indirect
github.com/Abirdcfly/dupword v0.1.3 // indirect
github.com/Antonboom/errname v1.0.0 // indirect
github.com/Antonboom/nilnil v1.0.1 // indirect
github.com/Antonboom/testifylint v1.5.2 // indirect
github.com/BurntSushi/toml v1.4.1-0.20240526193622-a339e1f7089c // indirect
github.com/Crocmagnon/fatcontext v0.7.1 // indirect
github.com/Djarvur/go-err113 v0.0.0-20210108212216-aea10b59be24 // indirect
github.com/GaijinEntertainment/go-exhaustruct/v3 v3.3.1 // indirect
github.com/Masterminds/semver/v3 v3.3.0 // indirect
github.com/OpenPeeDeeP/depguard/v2 v2.2.1 // indirect
github.com/alecthomas/go-check-sumtype v0.3.1 // indirect
github.com/alexkohler/nakedret/v2 v2.0.5 // indirect
github.com/alexkohler/prealloc v1.0.0 // indirect
github.com/alingse/asasalint v0.0.11 // indirect
github.com/alingse/nilnesserr v0.1.2 // indirect
github.com/ashanbrown/forbidigo v1.6.0 // indirect
github.com/ashanbrown/makezero v1.2.0 // indirect
github.com/beorn7/perks v1.0.1 // indirect
github.com/google/uuid v1.6.0
github.com/jackc/pgx/v5 v5.7.6
github.com/spf13/cobra v1.10.2
github.com/stretchr/testify v1.11.1
gopkg.in/yaml.v3 v3.0.1
)
github.com/bkielbasa/cyclop v1.2.3 // indirect
github.com/blizzy78/varnamelen v0.8.0 // indirect
github.com/bombsimon/wsl/v4 v4.5.0 // indirect
github.com/breml/bidichk v0.3.2 // indirect
github.com/breml/errchkjson v0.4.0 // indirect
github.com/butuzov/ireturn v0.3.1 // indirect
github.com/butuzov/mirror v1.3.0 // indirect
github.com/catenacyber/perfsprint v0.8.2 // indirect
github.com/ccojocar/zxcvbn-go v1.0.2 // indirect
github.com/cespare/xxhash/v2 v2.3.0 // indirect
github.com/charithe/durationcheck v0.0.10 // indirect
github.com/chavacava/garif v0.1.0 // indirect
github.com/ckaznocha/intrange v0.3.0 // indirect
github.com/curioswitch/go-reassign v0.3.0 // indirect
github.com/daixiang0/gci v0.13.5 // indirect
require (
github.com/davecgh/go-spew v1.1.1 // indirect
github.com/denis-tingaikin/go-header v0.5.0 // indirect
github.com/ettle/strcase v0.2.0 // indirect
github.com/fatih/color v1.18.0 // indirect
github.com/fatih/structtag v1.2.0 // indirect
github.com/firefart/nonamedreturns v1.0.5 // indirect
github.com/fsnotify/fsnotify v1.9.0 // indirect
github.com/fzipp/gocyclo v0.6.0 // indirect
github.com/ghostiam/protogetter v0.3.9 // indirect
github.com/go-critic/go-critic v0.12.0 // indirect
github.com/go-toolsmith/astcast v1.1.0 // indirect
github.com/go-toolsmith/astcopy v1.1.0 // indirect
github.com/go-toolsmith/astequal v1.2.0 // indirect
github.com/go-toolsmith/astfmt v1.1.0 // indirect
github.com/go-toolsmith/astp v1.1.0 // indirect
github.com/go-toolsmith/strparse v1.1.0 // indirect
github.com/go-toolsmith/typep v1.1.0 // indirect
github.com/go-viper/mapstructure/v2 v2.4.0 // indirect
github.com/go-xmlfmt/xmlfmt v1.1.3 // indirect
github.com/gobwas/glob v0.2.3 // indirect
github.com/gofrs/flock v0.12.1 // indirect
github.com/golangci/dupl v0.0.0-20250308024227-f665c8d69b32 // indirect
github.com/golangci/go-printf-func-name v0.1.0 // indirect
github.com/golangci/gofmt v0.0.0-20250106114630-d62b90e6713d // indirect
github.com/golangci/golangci-lint v1.64.8 // indirect
github.com/golangci/misspell v0.6.0 // indirect
github.com/golangci/plugin-module-register v0.1.1 // indirect
github.com/golangci/revgrep v0.8.0 // indirect
github.com/golangci/unconvert v0.0.0-20240309020433-c5143eacb3ed // indirect
github.com/google/go-cmp v0.7.0 // indirect
github.com/google/uuid v1.6.0 // indirect
github.com/gordonklaus/ineffassign v0.1.0 // indirect
github.com/gostaticanalysis/analysisutil v0.7.1 // indirect
github.com/gostaticanalysis/comment v1.5.0 // indirect
github.com/gostaticanalysis/forcetypeassert v0.2.0 // indirect
github.com/gostaticanalysis/nilerr v0.1.1 // indirect
github.com/hashicorp/go-immutable-radix/v2 v2.1.0 // indirect
github.com/hashicorp/go-version v1.7.0 // indirect
github.com/hashicorp/golang-lru/v2 v2.0.7 // indirect
github.com/hexops/gotextdiff v1.0.3 // indirect
github.com/inconshreveable/mousetrap v1.1.0 // indirect
github.com/jackc/pgpassfile v1.0.0 // indirect
github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 // indirect
github.com/jackc/pgx/v5 v5.7.6 // indirect
github.com/jgautheron/goconst v1.7.1 // indirect
github.com/jingyugao/rowserrcheck v1.1.1 // indirect
github.com/jjti/go-spancheck v0.6.4 // indirect
github.com/julz/importas v0.2.0 // indirect
github.com/karamaru-alpha/copyloopvar v1.2.1 // indirect
github.com/kisielk/errcheck v1.9.0 // indirect
github.com/kkHAIKE/contextcheck v1.1.6 // indirect
github.com/kulti/thelper v0.6.3 // indirect
github.com/kunwardeep/paralleltest v1.0.10 // indirect
github.com/lasiar/canonicalheader v1.1.2 // indirect
github.com/ldez/exptostd v0.4.2 // indirect
github.com/ldez/gomoddirectives v0.6.1 // indirect
github.com/ldez/grignotin v0.9.0 // indirect
github.com/ldez/tagliatelle v0.7.1 // indirect
github.com/ldez/usetesting v0.4.2 // indirect
github.com/leonklingele/grouper v1.1.2 // indirect
github.com/macabu/inamedparam v0.1.3 // indirect
github.com/maratori/testableexamples v1.0.0 // indirect
github.com/maratori/testpackage v1.1.1 // indirect
github.com/matoous/godox v1.1.0 // indirect
github.com/mattn/go-colorable v0.1.14 // indirect
github.com/mattn/go-isatty v0.0.20 // indirect
github.com/mattn/go-runewidth v0.0.16 // indirect
github.com/mgechev/revive v1.7.0 // indirect
github.com/mitchellh/go-homedir v1.1.0 // indirect
github.com/moricho/tparallel v0.3.2 // indirect
github.com/munnerz/goautoneg v0.0.0-20191010083416-a7dc8b61c822 // indirect
github.com/nakabonne/nestif v0.3.1 // indirect
github.com/nishanths/exhaustive v0.12.0 // indirect
github.com/nishanths/predeclared v0.2.2 // indirect
github.com/nunnatsa/ginkgolinter v0.19.1 // indirect
github.com/olekukonko/tablewriter v0.0.5 // indirect
github.com/pelletier/go-toml/v2 v2.2.4 // indirect
github.com/kr/pretty v0.3.1 // indirect
github.com/pmezard/go-difflib v1.0.0 // indirect
github.com/polyfloyd/go-errorlint v1.7.1 // indirect
github.com/prometheus/client_golang v1.23.2 // indirect
github.com/prometheus/client_model v0.6.2 // indirect
github.com/prometheus/common v0.66.1 // indirect
github.com/prometheus/procfs v0.16.1 // indirect
github.com/quasilyte/go-ruleguard v0.4.3-0.20240823090925-0fe6f58b47b1 // indirect
github.com/quasilyte/go-ruleguard/dsl v0.3.22 // indirect
github.com/quasilyte/gogrep v0.5.0 // indirect
github.com/quasilyte/regex/syntax v0.0.0-20210819130434-b3f0c404a727 // indirect
github.com/quasilyte/stdinfo v0.0.0-20220114132959-f7386bf02567 // indirect
github.com/raeperd/recvcheck v0.2.0 // indirect
github.com/rivo/uniseg v0.4.7 // indirect
github.com/rogpeppe/go-internal v1.14.1 // indirect
github.com/ryancurrah/gomodguard v1.3.5 // indirect
github.com/ryanrolds/sqlclosecheck v0.5.1 // indirect
github.com/sagikazarmark/locafero v0.11.0 // indirect
github.com/sanposhiho/wastedassign/v2 v2.1.0 // indirect
github.com/santhosh-tekuri/jsonschema/v6 v6.0.1 // indirect
github.com/sashamelentyev/interfacebloat v1.1.0 // indirect
github.com/sashamelentyev/usestdlibvars v1.28.0 // indirect
github.com/securego/gosec/v2 v2.22.2 // indirect
github.com/sirupsen/logrus v1.9.3 // indirect
github.com/sivchari/containedctx v1.0.3 // indirect
github.com/sivchari/tenv v1.12.1 // indirect
github.com/sonatard/noctx v0.1.0 // indirect
github.com/sourcegraph/conc v0.3.1-0.20240121214520-5f936abd7ae8 // indirect
github.com/sourcegraph/go-diff v0.7.0 // indirect
github.com/spf13/afero v1.15.0 // indirect
github.com/spf13/cast v1.10.0 // indirect
github.com/spf13/cobra v1.10.2 // indirect
github.com/spf13/pflag v1.0.10 // indirect
github.com/spf13/viper v1.21.0 // indirect
github.com/ssgreg/nlreturn/v2 v2.2.1 // indirect
github.com/stbenjam/no-sprintf-host-port v0.2.0 // indirect
github.com/stretchr/objx v0.5.2 // indirect
github.com/stretchr/testify v1.11.1 // indirect
github.com/subosito/gotenv v1.6.0 // indirect
github.com/tdakkota/asciicheck v0.4.1 // indirect
github.com/tetafro/godot v1.5.0 // indirect
github.com/timakin/bodyclose v0.0.0-20241017074812-ed6a65f985e3 // indirect
github.com/timonwong/loggercheck v0.10.1 // indirect
github.com/tomarrell/wrapcheck/v2 v2.10.0 // indirect
github.com/tommy-muehle/go-mnd/v2 v2.5.1 // indirect
github.com/ultraware/funlen v0.2.0 // indirect
github.com/ultraware/whitespace v0.2.0 // indirect
github.com/uudashr/gocognit v1.2.0 // indirect
github.com/uudashr/iface v1.3.1 // indirect
github.com/xen0n/gosmopolitan v1.2.2 // indirect
github.com/yagipy/maintidx v1.0.0 // indirect
github.com/yeya24/promlinter v0.3.0 // indirect
github.com/ykadowak/zerologlint v0.1.5 // indirect
gitlab.com/bosi/decorder v0.4.2 // indirect
go-simpler.org/musttag v0.13.0 // indirect
go-simpler.org/sloglint v0.9.0 // indirect
go.uber.org/automaxprocs v1.6.0 // indirect
go.uber.org/multierr v1.10.0 // indirect
go.uber.org/zap v1.27.0 // indirect
go.yaml.in/yaml/v2 v2.4.2 // indirect
go.yaml.in/yaml/v3 v3.0.4 // indirect
golang.org/x/crypto v0.41.0 // indirect
golang.org/x/exp/typeparams v0.0.0-20250210185358-939b2ce775ac // indirect
golang.org/x/mod v0.26.0 // indirect
golang.org/x/sync v0.16.0 // indirect
golang.org/x/sys v0.35.0 // indirect
golang.org/x/text v0.28.0 // indirect
golang.org/x/tools v0.35.0 // indirect
google.golang.org/protobuf v1.36.8 // indirect
gopkg.in/yaml.v2 v2.4.0 // indirect
gopkg.in/yaml.v3 v3.0.1 // indirect
honnef.co/go/tools v0.6.1 // indirect
mvdan.cc/gofumpt v0.7.0 // indirect
mvdan.cc/unparam v0.0.0-20240528143540-8a5130ca722f // indirect
)

500
go.sum
View File

@@ -1,171 +1,10 @@
4d63.com/gocheckcompilerdirectives v1.3.0 h1:Ew5y5CtcAAQeTVKUVFrE7EwHMrTO6BggtEj8BZSjZ3A=
4d63.com/gocheckcompilerdirectives v1.3.0/go.mod h1:ofsJ4zx2QAuIP/NO/NAh1ig6R1Fb18/GI7RVMwz7kAY=
4d63.com/gochecknoglobals v0.2.2 h1:H1vdnwnMaZdQW/N+NrkT1SZMTBmcwHe9Vq8lJcYYTtU=
4d63.com/gochecknoglobals v0.2.2/go.mod h1:lLxwTQjL5eIesRbvnzIP3jZtG140FnTdz+AlMa+ogt0=
github.com/4meepo/tagalign v1.4.2 h1:0hcLHPGMjDyM1gHG58cS73aQF8J4TdVR96TZViorO9E=
github.com/4meepo/tagalign v1.4.2/go.mod h1:+p4aMyFM+ra7nb41CnFG6aSDXqRxU/w1VQqScKqDARI=
github.com/Abirdcfly/dupword v0.1.3 h1:9Pa1NuAsZvpFPi9Pqkd93I7LIYRURj+A//dFd5tgBeE=
github.com/Abirdcfly/dupword v0.1.3/go.mod h1:8VbB2t7e10KRNdwTVoxdBaxla6avbhGzb8sCTygUMhw=
github.com/Antonboom/errname v1.0.0 h1:oJOOWR07vS1kRusl6YRSlat7HFnb3mSfMl6sDMRoTBA=
github.com/Antonboom/errname v1.0.0/go.mod h1:gMOBFzK/vrTiXN9Oh+HFs+e6Ndl0eTFbtsRTSRdXyGI=
github.com/Antonboom/nilnil v1.0.1 h1:C3Tkm0KUxgfO4Duk3PM+ztPncTFlOf0b2qadmS0s4xs=
github.com/Antonboom/nilnil v1.0.1/go.mod h1:CH7pW2JsRNFgEh8B2UaPZTEPhCMuFowP/e8Udp9Nnb0=
github.com/Antonboom/testifylint v1.5.2 h1:4s3Xhuv5AvdIgbd8wOOEeo0uZG7PbDKQyKY5lGoQazk=
github.com/Antonboom/testifylint v1.5.2/go.mod h1:vxy8VJ0bc6NavlYqjZfmp6EfqXMtBgQ4+mhCojwC1P8=
github.com/BurntSushi/toml v1.4.1-0.20240526193622-a339e1f7089c h1:pxW6RcqyfI9/kWtOwnv/G+AzdKuy2ZrqINhenH4HyNs=
github.com/BurntSushi/toml v1.4.1-0.20240526193622-a339e1f7089c/go.mod h1:ukJfTF/6rtPPRCnwkur4qwRxa8vTRFBF0uk2lLoLwho=
github.com/Crocmagnon/fatcontext v0.7.1 h1:SC/VIbRRZQeQWj/TcQBS6JmrXcfA+BU4OGSVUt54PjM=
github.com/Crocmagnon/fatcontext v0.7.1/go.mod h1:1wMvv3NXEBJucFGfwOJBxSVWcoIO6emV215SMkW9MFU=
github.com/Djarvur/go-err113 v0.0.0-20210108212216-aea10b59be24 h1:sHglBQTwgx+rWPdisA5ynNEsoARbiCBOyGcJM4/OzsM=
github.com/Djarvur/go-err113 v0.0.0-20210108212216-aea10b59be24/go.mod h1:4UJr5HIiMZrwgkSPdsjy2uOQExX/WEILpIrO9UPGuXs=
github.com/GaijinEntertainment/go-exhaustruct/v3 v3.3.1 h1:Sz1JIXEcSfhz7fUi7xHnhpIE0thVASYjvosApmHuD2k=
github.com/GaijinEntertainment/go-exhaustruct/v3 v3.3.1/go.mod h1:n/LSCXNuIYqVfBlVXyHfMQkZDdp1/mmxfSjADd3z1Zg=
github.com/Masterminds/semver/v3 v3.3.0 h1:B8LGeaivUe71a5qox1ICM/JLl0NqZSW5CHyL+hmvYS0=
github.com/Masterminds/semver/v3 v3.3.0/go.mod h1:4V+yj/TJE1HU9XfppCwVMZq3I84lprf4nC11bSS5beM=
github.com/OpenPeeDeeP/depguard/v2 v2.2.1 h1:vckeWVESWp6Qog7UZSARNqfu/cZqvki8zsuj3piCMx4=
github.com/OpenPeeDeeP/depguard/v2 v2.2.1/go.mod h1:q4DKzC4UcVaAvcfd41CZh0PWpGgzrVxUYBlgKNGquUo=
github.com/alecthomas/go-check-sumtype v0.3.1 h1:u9aUvbGINJxLVXiFvHUlPEaD7VDULsrxJb4Aq31NLkU=
github.com/alecthomas/go-check-sumtype v0.3.1/go.mod h1:A8TSiN3UPRw3laIgWEUOHHLPa6/r9MtoigdlP5h3K/E=
github.com/alexkohler/nakedret/v2 v2.0.5 h1:fP5qLgtwbx9EJE8dGEERT02YwS8En4r9nnZ71RK+EVU=
github.com/alexkohler/nakedret/v2 v2.0.5/go.mod h1:bF5i0zF2Wo2o4X4USt9ntUWve6JbFv02Ff4vlkmS/VU=
github.com/alexkohler/prealloc v1.0.0 h1:Hbq0/3fJPQhNkN0dR95AVrr6R7tou91y0uHG5pOcUuw=
github.com/alexkohler/prealloc v1.0.0/go.mod h1:VetnK3dIgFBBKmg0YnD9F9x6Icjd+9cvfHR56wJVlKE=
github.com/alingse/asasalint v0.0.11 h1:SFwnQXJ49Kx/1GghOFz1XGqHYKp21Kq1nHad/0WQRnw=
github.com/alingse/asasalint v0.0.11/go.mod h1:nCaoMhw7a9kSJObvQyVzNTPBDbNpdocqrSP7t/cW5+I=
github.com/alingse/nilnesserr v0.1.2 h1:Yf8Iwm3z2hUUrP4muWfW83DF4nE3r1xZ26fGWUKCZlo=
github.com/alingse/nilnesserr v0.1.2/go.mod h1:1xJPrXonEtX7wyTq8Dytns5P2hNzoWymVUIaKm4HNFg=
github.com/ashanbrown/forbidigo v1.6.0 h1:D3aewfM37Yb3pxHujIPSpTf6oQk9sc9WZi8gerOIVIY=
github.com/ashanbrown/forbidigo v1.6.0/go.mod h1:Y8j9jy9ZYAEHXdu723cUlraTqbzjKF1MUyfOKL+AjcU=
github.com/ashanbrown/makezero v1.2.0 h1:/2Lp1bypdmK9wDIq7uWBlDF1iMUpIIS4A+pF6C9IEUU=
github.com/ashanbrown/makezero v1.2.0/go.mod h1:dxlPhHbDMC6N6xICzFBSK+4njQDdK8euNO0qjQMtGY4=
github.com/beorn7/perks v1.0.1 h1:VlbKKnNfV8bJzeqoa4cOKqO6bYr3WgKZxO8Z16+hsOM=
github.com/beorn7/perks v1.0.1/go.mod h1:G2ZrVWU2WbWT9wwq4/hrbKbnv/1ERSJQ0ibhJ6rlkpw=
github.com/bitechdev/ResolveSpec v0.0.108 h1:0Asw4zt9SdBIDprNqtrGY67R4SovAPBmW2y1qRn/Wjw=
github.com/bitechdev/ResolveSpec v0.0.108/go.mod h1:/mtVcbXSBLNmWlTKeDnbQx18tmNqOnrpetpLOadLzqo=
github.com/bkielbasa/cyclop v1.2.3 h1:faIVMIGDIANuGPWH031CZJTi2ymOQBULs9H21HSMa5w=
github.com/bkielbasa/cyclop v1.2.3/go.mod h1:kHTwA9Q0uZqOADdupvcFJQtp/ksSnytRMe8ztxG8Fuo=
github.com/blizzy78/varnamelen v0.8.0 h1:oqSblyuQvFsW1hbBHh1zfwrKe3kcSj0rnXkKzsQ089M=
github.com/blizzy78/varnamelen v0.8.0/go.mod h1:V9TzQZ4fLJ1DSrjVDfl89H7aMnTvKkApdHeyESmyR7k=
github.com/bombsimon/wsl/v4 v4.5.0 h1:iZRsEvDdyhd2La0FVi5k6tYehpOR/R7qIUjmKk7N74A=
github.com/bombsimon/wsl/v4 v4.5.0/go.mod h1:NOQ3aLF4nD7N5YPXMruR6ZXDOAqLoM0GEpLwTdvmOSc=
github.com/breml/bidichk v0.3.2 h1:xV4flJ9V5xWTqxL+/PMFF6dtJPvZLPsyixAoPe8BGJs=
github.com/breml/bidichk v0.3.2/go.mod h1:VzFLBxuYtT23z5+iVkamXO386OB+/sVwZOpIj6zXGos=
github.com/breml/errchkjson v0.4.0 h1:gftf6uWZMtIa/Is3XJgibewBm2ksAQSY/kABDNFTAdk=
github.com/breml/errchkjson v0.4.0/go.mod h1:AuBOSTHyLSaaAFlWsRSuRBIroCh3eh7ZHh5YeelDIk8=
github.com/butuzov/ireturn v0.3.1 h1:mFgbEI6m+9W8oP/oDdfA34dLisRFCj2G6o/yiI1yZrY=
github.com/butuzov/ireturn v0.3.1/go.mod h1:ZfRp+E7eJLC0NQmk1Nrm1LOrn/gQlOykv+cVPdiXH5M=
github.com/butuzov/mirror v1.3.0 h1:HdWCXzmwlQHdVhwvsfBb2Au0r3HyINry3bDWLYXiKoc=
github.com/butuzov/mirror v1.3.0/go.mod h1:AEij0Z8YMALaq4yQj9CPPVYOyJQyiexpQEQgihajRfI=
github.com/catenacyber/perfsprint v0.8.2 h1:+o9zVmCSVa7M4MvabsWvESEhpsMkhfE7k0sHNGL95yw=
github.com/catenacyber/perfsprint v0.8.2/go.mod h1:q//VWC2fWbcdSLEY1R3l8n0zQCDPdE4IjZwyY1HMunM=
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github.com/google/go-cmp v0.5.2/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
github.com/google/go-cmp v0.5.4/go.mod h1:v8dTdLbMG2kIc/vJvl+f65V22dbkXbowE6jgT/gNBxE=
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github.com/google/uuid v1.6.0/go.mod h1:TIyPZe4MgqvfeYDBFedMoGGpEw/LqOeaOT+nhxU+yHo=
github.com/gordonklaus/ineffassign v0.1.0 h1:y2Gd/9I7MdY1oEIt+n+rowjBNDcLQq3RsH5hwJd0f9s=
github.com/gordonklaus/ineffassign v0.1.0/go.mod h1:Qcp2HIAYhR7mNUVSIxZww3Guk4it82ghYcEXIAk+QT0=
github.com/gostaticanalysis/analysisutil v0.7.1 h1:ZMCjoue3DtDWQ5WyU16YbjbQEQ3VuzwxALrpYd+HeKk=
github.com/gostaticanalysis/analysisutil v0.7.1/go.mod h1:v21E3hY37WKMGSnbsw2S/ojApNWb6C1//mXO48CXbVc=
github.com/gostaticanalysis/comment v1.4.1/go.mod h1:ih6ZxzTHLdadaiSnF5WY3dxUoXfXAlTaRzuaNDlSado=
github.com/gostaticanalysis/comment v1.4.2/go.mod h1:KLUTGDv6HOCotCH8h2erHKmpci2ZoR8VPu34YA2uzdM=
github.com/gostaticanalysis/comment v1.5.0 h1:X82FLl+TswsUMpMh17srGRuKaaXprTaytmEpgnKIDu8=
github.com/gostaticanalysis/comment v1.5.0/go.mod h1:V6eb3gpCv9GNVqb6amXzEUX3jXLVK/AdA+IrAMSqvEc=
github.com/gostaticanalysis/forcetypeassert v0.2.0 h1:uSnWrrUEYDr86OCxWa4/Tp2jeYDlogZiZHzGkWFefTk=
github.com/gostaticanalysis/forcetypeassert v0.2.0/go.mod h1:M5iPavzE9pPqWyeiVXSFghQjljW1+l/Uke3PXHS6ILY=
github.com/gostaticanalysis/nilerr v0.1.1 h1:ThE+hJP0fEp4zWLkWHWcRyI2Od0p7DlgYG3Uqrmrcpk=
github.com/gostaticanalysis/nilerr v0.1.1/go.mod h1:wZYb6YI5YAxxq0i1+VJbY0s2YONW0HU0GPE3+5PWN4A=
github.com/gostaticanalysis/testutil v0.3.1-0.20210208050101-bfb5c8eec0e4/go.mod h1:D+FIZ+7OahH3ePw/izIEeH5I06eKs1IKI4Xr64/Am3M=
github.com/hashicorp/go-immutable-radix/v2 v2.1.0 h1:CUW5RYIcysz+D3B+l1mDeXrQ7fUvGGCwJfdASSzbrfo=
github.com/hashicorp/go-immutable-radix/v2 v2.1.0/go.mod h1:hgdqLXA4f6NIjRVisM1TJ9aOJVNRqKZj+xDGF6m7PBw=
github.com/hashicorp/go-version v1.2.1/go.mod h1:fltr4n8CU8Ke44wwGCBoEymUuxUHl09ZGVZPK5anwXA=
github.com/hashicorp/go-version v1.7.0 h1:5tqGy27NaOTB8yJKUZELlFAS/LTKJkrmONwQKeRZfjY=
github.com/hashicorp/go-version v1.7.0/go.mod h1:fltr4n8CU8Ke44wwGCBoEymUuxUHl09ZGVZPK5anwXA=
github.com/hashicorp/golang-lru/v2 v2.0.7 h1:a+bsQ5rvGLjzHuww6tVxozPZFVghXaHOwFs4luLUK2k=
github.com/hashicorp/golang-lru/v2 v2.0.7/go.mod h1:QeFd9opnmA6QUJc5vARoKUSoFhyfM2/ZepoAG6RGpeM=
github.com/hexops/gotextdiff v1.0.3 h1:gitA9+qJrrTCsiCl7+kh75nPqQt1cx4ZkudSTLoUqJM=
github.com/hexops/gotextdiff v1.0.3/go.mod h1:pSWU5MAI3yDq+fZBTazCSJysOMbxWL1BSow5/V2vxeg=
github.com/inconshreveable/mousetrap v1.1.0 h1:wN+x4NVGpMsO7ErUn/mUI3vEoE6Jt13X2s0bqwp9tc8=
github.com/inconshreveable/mousetrap v1.1.0/go.mod h1:vpF70FUmC8bwa3OWnCshd2FqLfsEA9PFc4w1p2J65bw=
github.com/jackc/pgpassfile v1.0.0 h1:/6Hmqy13Ss2zCq62VdNG8tM1wchn8zjSGOBJ6icpsIM=
@@ -174,356 +13,39 @@ github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761 h1:iCEnooe7Ulw
github.com/jackc/pgservicefile v0.0.0-20240606120523-5a60cdf6a761/go.mod h1:5TJZWKEWniPve33vlWYSoGYefn3gLQRzjfDlhSJ9ZKM=
github.com/jackc/pgx/v5 v5.7.6 h1:rWQc5FwZSPX58r1OQmkuaNicxdmExaEz5A2DO2hUuTk=
github.com/jackc/pgx/v5 v5.7.6/go.mod h1:aruU7o91Tc2q2cFp5h4uP3f6ztExVpyVv88Xl/8Vl8M=
github.com/jgautheron/goconst v1.7.1 h1:VpdAG7Ca7yvvJk5n8dMwQhfEZJh95kl/Hl9S1OI5Jkk=
github.com/jgautheron/goconst v1.7.1/go.mod h1:aAosetZ5zaeC/2EfMeRswtxUFBpe2Hr7HzkgX4fanO4=
github.com/jingyugao/rowserrcheck v1.1.1 h1:zibz55j/MJtLsjP1OF4bSdgXxwL1b+Vn7Tjzq7gFzUs=
github.com/jingyugao/rowserrcheck v1.1.1/go.mod h1:4yvlZSDb3IyDTUZJUmpZfm2Hwok+Dtp+nu2qOq+er9c=
github.com/jjti/go-spancheck v0.6.4 h1:Tl7gQpYf4/TMU7AT84MN83/6PutY21Nb9fuQjFTpRRc=
github.com/jjti/go-spancheck v0.6.4/go.mod h1:yAEYdKJ2lRkDA8g7X+oKUHXOWVAXSBJRv04OhF+QUjk=
github.com/julz/importas v0.2.0 h1:y+MJN/UdL63QbFJHws9BVC5RpA2iq0kpjrFajTGivjQ=
github.com/julz/importas v0.2.0/go.mod h1:pThlt589EnCYtMnmhmRYY/qn9lCf/frPOK+WMx3xiJY=
github.com/karamaru-alpha/copyloopvar v1.2.1 h1:wmZaZYIjnJ0b5UoKDjUHrikcV0zuPyyxI4SVplLd2CI=
github.com/karamaru-alpha/copyloopvar v1.2.1/go.mod h1:nFmMlFNlClC2BPvNaHMdkirmTJxVCY0lhxBtlfOypMM=
github.com/kisielk/errcheck v1.9.0 h1:9xt1zI9EBfcYBvdU1nVrzMzzUPUtPKs9bVSIM3TAb3M=
github.com/kisielk/errcheck v1.9.0/go.mod h1:kQxWMMVZgIkDq7U8xtG/n2juOjbLgZtedi0D+/VL/i8=
github.com/kkHAIKE/contextcheck v1.1.6 h1:7HIyRcnyzxL9Lz06NGhiKvenXq7Zw6Q0UQu/ttjfJCE=
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github.com/kulti/thelper v0.6.3 h1:ElhKf+AlItIu+xGnI990no4cE2+XaSu1ULymV2Yulxs=
github.com/kulti/thelper v0.6.3/go.mod h1:DsqKShOvP40epevkFrvIwkCMNYxMeTNjdWL4dqWHZ6I=
github.com/kunwardeep/paralleltest v1.0.10 h1:wrodoaKYzS2mdNVnc4/w31YaXFtsc21PCTdvWJ/lDDs=
github.com/kunwardeep/paralleltest v1.0.10/go.mod h1:2C7s65hONVqY7Q5Efj5aLzRCNLjw2h4eMc9EcypGjcY=
github.com/lasiar/canonicalheader v1.1.2 h1:vZ5uqwvDbyJCnMhmFYimgMZnJMjwljN5VGY0VKbMXb4=
github.com/lasiar/canonicalheader v1.1.2/go.mod h1:qJCeLFS0G/QlLQ506T+Fk/fWMa2VmBUiEI2cuMK4djI=
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golang.org/x/sys v0.0.0-20211019181941-9d821ace8654/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20211105183446-c75c47738b0c/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220715151400-c0bba94af5f8/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.2.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.13.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
golang.org/x/sys v0.29.0 h1:TPYlXGxvx1MGTn2GiZDhnjPA9wZzZeGKHHmKhHYvgaU=
golang.org/x/sys v0.29.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
golang.org/x/sys v0.35.0 h1:vz1N37gP5bs89s7He8XuIYXpyY0+QlsKmzipCbUtyxI=
golang.org/x/sys v0.35.0/go.mod h1:BJP2sWEmIv4KK5OTEluFJCKSidICx8ciO85XgH3Ak8k=
golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
golang.org/x/term v0.2.0/go.mod h1:TVmDHMZPmdnySmBfhjOoOdhjzdE1h4u1VwSiw2l1Nuc=
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golang.org/x/term v0.13.0/go.mod h1:LTmsnFJwVN6bCy1rVCoS+qHT1HhALEFxKncY3WNNh4U=
golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
golang.org/x/text v0.3.2/go.mod h1:bEr9sfX3Q8Zfm5fL9x+3itogRgK3+ptLWKqgva+5dAk=
golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/text v0.3.6/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
golang.org/x/text v0.4.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
golang.org/x/text v0.8.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
golang.org/x/text v0.28.0 h1:rhazDwis8INMIwQ4tpjLDzUhx6RlXqZNPEM0huQojng=
golang.org/x/text v0.28.0/go.mod h1:U8nCwOR8jO/marOQ0QbDiOngZVEBB7MAiitBuMjXiNU=
golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
golang.org/x/tools v0.0.0-20200324003944-a576cf524670/go.mod h1:Sl4aGygMT6LrqrWclx+PTx3U+LnKx/seiNR+3G19Ar8=
golang.org/x/tools v0.0.0-20200329025819-fd4102a86c65/go.mod h1:Sl4aGygMT6LrqrWclx+PTx3U+LnKx/seiNR+3G19Ar8=
golang.org/x/tools v0.0.0-20200724022722-7017fd6b1305/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
golang.org/x/tools v0.0.0-20200820010801-b793a1359eac/go.mod h1:njjCfa9FT2d7l9Bc6FUM5FLjQPp3cFF28FI3qnDFljA=
golang.org/x/tools v0.0.0-20201023174141-c8cfbd0f21e6/go.mod h1:emZCQorbCU4vsT4fOWvOPXz4eW1wZW4PmDk9uLelYpA=
golang.org/x/tools v0.1.1-0.20210205202024-ef80cdb6ec6d/go.mod h1:9bzcO0MWcOuT0tm1iBGzDVPshzfwoVvREIui8C+MHqU=
golang.org/x/tools v0.1.1-0.20210302220138-2ac05c832e1a/go.mod h1:9bzcO0MWcOuT0tm1iBGzDVPshzfwoVvREIui8C+MHqU=
golang.org/x/tools v0.1.1/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
golang.org/x/tools v0.1.5/go.mod h1:o0xws9oXOQQZyjljx8fwUC0k7L1pTE6eaCbjGeHmOkk=
golang.org/x/tools v0.1.10/go.mod h1:Uh6Zz+xoGYZom868N8YTex3t7RhtHDBrE8Gzo9bV56E=
golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
golang.org/x/tools v0.3.0/go.mod h1:/rWhSS2+zyEVwoJf8YAX6L2f0ntZ7Kn/mGgAWcipA5k=
golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
golang.org/x/tools v0.7.0/go.mod h1:4pg6aUX35JBAogB10C9AtvVL+qowtN4pT3CGSQex14s=
golang.org/x/tools v0.13.0/go.mod h1:HvlwmtVNQAhOuCjW7xxvovg8wbNq7LwfXh/k7wXUl58=
golang.org/x/tools v0.14.0/go.mod h1:uYBEerGOWcJyEORxN+Ek8+TT266gXkNlHdJBwexUsBg=
golang.org/x/tools v0.35.0 h1:mBffYraMEf7aa0sB+NuKnuCy8qI/9Bughn8dC2Gu5r0=
golang.org/x/tools v0.35.0/go.mod h1:NKdj5HkL/73byiZSJjqJgKn3ep7KjFkBOkR/Hps3VPw=
golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20191011141410-1b5146add898/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20191204190536-9bdfabe68543/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
golang.org/x/xerrors v0.0.0-20200804184101-5ec99f83aff1/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
google.golang.org/protobuf v1.36.8 h1:xHScyCOEuuwZEc6UtSOvPbAT4zRh0xcNRYekJwfqyMc=
google.golang.org/protobuf v1.36.8/go.mod h1:fuxRtAxBytpl4zzqUh6/eyUujkJdNiuEkXntxiD/uRU=
gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
gopkg.in/yaml.v2 v2.2.2/go.mod h1:hI93XBmqTisBFMUTm0b8Fm+jr3Dg1NNxqwp+5A1VGuI=
gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=
gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c h1:Hei/4ADfdWqJk1ZMxUNpqntNwaWcugrBjAiHlqqRiVk=
gopkg.in/check.v1 v1.0.0-20201130134442-10cb98267c6c/go.mod h1:JHkPIbrfpd72SG/EVd6muEfDQjcINNoR0C8j2r3qZ4Q=
gopkg.in/yaml.v3 v3.0.0-20200313102051-9f266ea9e77c/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=
honnef.co/go/tools v0.6.1 h1:R094WgE8K4JirYjBaOpz/AvTyUu/3wbmAoskKN/pxTI=
honnef.co/go/tools v0.6.1/go.mod h1:3puzxxljPCe8RGJX7BIy1plGbxEOZni5mR2aXe3/uk4=
mvdan.cc/gofumpt v0.7.0 h1:bg91ttqXmi9y2xawvkuMXyvAA/1ZGJqYAEGjXuP0JXU=
mvdan.cc/gofumpt v0.7.0/go.mod h1:txVFJy/Sc/mvaycET54pV8SW8gWxTlUuGHVEcncmNUo=
mvdan.cc/unparam v0.0.0-20240528143540-8a5130ca722f h1:lMpcwN6GxNbWtbpI1+xzFLSW8XzX0u72NttUGVFjO3U=
mvdan.cc/unparam v0.0.0-20240528143540-8a5130ca722f/go.mod h1:RSLa7mKKCNeTTMHBw5Hsy2rfJmd6O2ivt9Dw9ZqCQpQ=

15
vendor/github.com/davecgh/go-spew/LICENSE generated vendored Normal file
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@@ -0,0 +1,15 @@
ISC License
Copyright (c) 2012-2016 Dave Collins <dave@davec.name>
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

145
vendor/github.com/davecgh/go-spew/spew/bypass.go generated vendored Normal file
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@@ -0,0 +1,145 @@
// Copyright (c) 2015-2016 Dave Collins <dave@davec.name>
//
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
// NOTE: Due to the following build constraints, this file will only be compiled
// when the code is not running on Google App Engine, compiled by GopherJS, and
// "-tags safe" is not added to the go build command line. The "disableunsafe"
// tag is deprecated and thus should not be used.
// Go versions prior to 1.4 are disabled because they use a different layout
// for interfaces which make the implementation of unsafeReflectValue more complex.
// +build !js,!appengine,!safe,!disableunsafe,go1.4
package spew
import (
"reflect"
"unsafe"
)
const (
// UnsafeDisabled is a build-time constant which specifies whether or
// not access to the unsafe package is available.
UnsafeDisabled = false
// ptrSize is the size of a pointer on the current arch.
ptrSize = unsafe.Sizeof((*byte)(nil))
)
type flag uintptr
var (
// flagRO indicates whether the value field of a reflect.Value
// is read-only.
flagRO flag
// flagAddr indicates whether the address of the reflect.Value's
// value may be taken.
flagAddr flag
)
// flagKindMask holds the bits that make up the kind
// part of the flags field. In all the supported versions,
// it is in the lower 5 bits.
const flagKindMask = flag(0x1f)
// Different versions of Go have used different
// bit layouts for the flags type. This table
// records the known combinations.
var okFlags = []struct {
ro, addr flag
}{{
// From Go 1.4 to 1.5
ro: 1 << 5,
addr: 1 << 7,
}, {
// Up to Go tip.
ro: 1<<5 | 1<<6,
addr: 1 << 8,
}}
var flagValOffset = func() uintptr {
field, ok := reflect.TypeOf(reflect.Value{}).FieldByName("flag")
if !ok {
panic("reflect.Value has no flag field")
}
return field.Offset
}()
// flagField returns a pointer to the flag field of a reflect.Value.
func flagField(v *reflect.Value) *flag {
return (*flag)(unsafe.Pointer(uintptr(unsafe.Pointer(v)) + flagValOffset))
}
// unsafeReflectValue converts the passed reflect.Value into a one that bypasses
// the typical safety restrictions preventing access to unaddressable and
// unexported data. It works by digging the raw pointer to the underlying
// value out of the protected value and generating a new unprotected (unsafe)
// reflect.Value to it.
//
// This allows us to check for implementations of the Stringer and error
// interfaces to be used for pretty printing ordinarily unaddressable and
// inaccessible values such as unexported struct fields.
func unsafeReflectValue(v reflect.Value) reflect.Value {
if !v.IsValid() || (v.CanInterface() && v.CanAddr()) {
return v
}
flagFieldPtr := flagField(&v)
*flagFieldPtr &^= flagRO
*flagFieldPtr |= flagAddr
return v
}
// Sanity checks against future reflect package changes
// to the type or semantics of the Value.flag field.
func init() {
field, ok := reflect.TypeOf(reflect.Value{}).FieldByName("flag")
if !ok {
panic("reflect.Value has no flag field")
}
if field.Type.Kind() != reflect.TypeOf(flag(0)).Kind() {
panic("reflect.Value flag field has changed kind")
}
type t0 int
var t struct {
A t0
// t0 will have flagEmbedRO set.
t0
// a will have flagStickyRO set
a t0
}
vA := reflect.ValueOf(t).FieldByName("A")
va := reflect.ValueOf(t).FieldByName("a")
vt0 := reflect.ValueOf(t).FieldByName("t0")
// Infer flagRO from the difference between the flags
// for the (otherwise identical) fields in t.
flagPublic := *flagField(&vA)
flagWithRO := *flagField(&va) | *flagField(&vt0)
flagRO = flagPublic ^ flagWithRO
// Infer flagAddr from the difference between a value
// taken from a pointer and not.
vPtrA := reflect.ValueOf(&t).Elem().FieldByName("A")
flagNoPtr := *flagField(&vA)
flagPtr := *flagField(&vPtrA)
flagAddr = flagNoPtr ^ flagPtr
// Check that the inferred flags tally with one of the known versions.
for _, f := range okFlags {
if flagRO == f.ro && flagAddr == f.addr {
return
}
}
panic("reflect.Value read-only flag has changed semantics")
}

38
vendor/github.com/davecgh/go-spew/spew/bypasssafe.go generated vendored Normal file
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@@ -0,0 +1,38 @@
// Copyright (c) 2015-2016 Dave Collins <dave@davec.name>
//
// Permission to use, copy, modify, and distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
// ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
// ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
// OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
// NOTE: Due to the following build constraints, this file will only be compiled
// when the code is running on Google App Engine, compiled by GopherJS, or
// "-tags safe" is added to the go build command line. The "disableunsafe"
// tag is deprecated and thus should not be used.
// +build js appengine safe disableunsafe !go1.4
package spew
import "reflect"
const (
// UnsafeDisabled is a build-time constant which specifies whether or
// not access to the unsafe package is available.
UnsafeDisabled = true
)
// unsafeReflectValue typically converts the passed reflect.Value into a one
// that bypasses the typical safety restrictions preventing access to
// unaddressable and unexported data. However, doing this relies on access to
// the unsafe package. This is a stub version which simply returns the passed
// reflect.Value when the unsafe package is not available.
func unsafeReflectValue(v reflect.Value) reflect.Value {
return v
}

341
vendor/github.com/davecgh/go-spew/spew/common.go generated vendored Normal file
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@@ -0,0 +1,341 @@
/*
* Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package spew
import (
"bytes"
"fmt"
"io"
"reflect"
"sort"
"strconv"
)
// Some constants in the form of bytes to avoid string overhead. This mirrors
// the technique used in the fmt package.
var (
panicBytes = []byte("(PANIC=")
plusBytes = []byte("+")
iBytes = []byte("i")
trueBytes = []byte("true")
falseBytes = []byte("false")
interfaceBytes = []byte("(interface {})")
commaNewlineBytes = []byte(",\n")
newlineBytes = []byte("\n")
openBraceBytes = []byte("{")
openBraceNewlineBytes = []byte("{\n")
closeBraceBytes = []byte("}")
asteriskBytes = []byte("*")
colonBytes = []byte(":")
colonSpaceBytes = []byte(": ")
openParenBytes = []byte("(")
closeParenBytes = []byte(")")
spaceBytes = []byte(" ")
pointerChainBytes = []byte("->")
nilAngleBytes = []byte("<nil>")
maxNewlineBytes = []byte("<max depth reached>\n")
maxShortBytes = []byte("<max>")
circularBytes = []byte("<already shown>")
circularShortBytes = []byte("<shown>")
invalidAngleBytes = []byte("<invalid>")
openBracketBytes = []byte("[")
closeBracketBytes = []byte("]")
percentBytes = []byte("%")
precisionBytes = []byte(".")
openAngleBytes = []byte("<")
closeAngleBytes = []byte(">")
openMapBytes = []byte("map[")
closeMapBytes = []byte("]")
lenEqualsBytes = []byte("len=")
capEqualsBytes = []byte("cap=")
)
// hexDigits is used to map a decimal value to a hex digit.
var hexDigits = "0123456789abcdef"
// catchPanic handles any panics that might occur during the handleMethods
// calls.
func catchPanic(w io.Writer, v reflect.Value) {
if err := recover(); err != nil {
w.Write(panicBytes)
fmt.Fprintf(w, "%v", err)
w.Write(closeParenBytes)
}
}
// handleMethods attempts to call the Error and String methods on the underlying
// type the passed reflect.Value represents and outputes the result to Writer w.
//
// It handles panics in any called methods by catching and displaying the error
// as the formatted value.
func handleMethods(cs *ConfigState, w io.Writer, v reflect.Value) (handled bool) {
// We need an interface to check if the type implements the error or
// Stringer interface. However, the reflect package won't give us an
// interface on certain things like unexported struct fields in order
// to enforce visibility rules. We use unsafe, when it's available,
// to bypass these restrictions since this package does not mutate the
// values.
if !v.CanInterface() {
if UnsafeDisabled {
return false
}
v = unsafeReflectValue(v)
}
// Choose whether or not to do error and Stringer interface lookups against
// the base type or a pointer to the base type depending on settings.
// Technically calling one of these methods with a pointer receiver can
// mutate the value, however, types which choose to satisify an error or
// Stringer interface with a pointer receiver should not be mutating their
// state inside these interface methods.
if !cs.DisablePointerMethods && !UnsafeDisabled && !v.CanAddr() {
v = unsafeReflectValue(v)
}
if v.CanAddr() {
v = v.Addr()
}
// Is it an error or Stringer?
switch iface := v.Interface().(type) {
case error:
defer catchPanic(w, v)
if cs.ContinueOnMethod {
w.Write(openParenBytes)
w.Write([]byte(iface.Error()))
w.Write(closeParenBytes)
w.Write(spaceBytes)
return false
}
w.Write([]byte(iface.Error()))
return true
case fmt.Stringer:
defer catchPanic(w, v)
if cs.ContinueOnMethod {
w.Write(openParenBytes)
w.Write([]byte(iface.String()))
w.Write(closeParenBytes)
w.Write(spaceBytes)
return false
}
w.Write([]byte(iface.String()))
return true
}
return false
}
// printBool outputs a boolean value as true or false to Writer w.
func printBool(w io.Writer, val bool) {
if val {
w.Write(trueBytes)
} else {
w.Write(falseBytes)
}
}
// printInt outputs a signed integer value to Writer w.
func printInt(w io.Writer, val int64, base int) {
w.Write([]byte(strconv.FormatInt(val, base)))
}
// printUint outputs an unsigned integer value to Writer w.
func printUint(w io.Writer, val uint64, base int) {
w.Write([]byte(strconv.FormatUint(val, base)))
}
// printFloat outputs a floating point value using the specified precision,
// which is expected to be 32 or 64bit, to Writer w.
func printFloat(w io.Writer, val float64, precision int) {
w.Write([]byte(strconv.FormatFloat(val, 'g', -1, precision)))
}
// printComplex outputs a complex value using the specified float precision
// for the real and imaginary parts to Writer w.
func printComplex(w io.Writer, c complex128, floatPrecision int) {
r := real(c)
w.Write(openParenBytes)
w.Write([]byte(strconv.FormatFloat(r, 'g', -1, floatPrecision)))
i := imag(c)
if i >= 0 {
w.Write(plusBytes)
}
w.Write([]byte(strconv.FormatFloat(i, 'g', -1, floatPrecision)))
w.Write(iBytes)
w.Write(closeParenBytes)
}
// printHexPtr outputs a uintptr formatted as hexadecimal with a leading '0x'
// prefix to Writer w.
func printHexPtr(w io.Writer, p uintptr) {
// Null pointer.
num := uint64(p)
if num == 0 {
w.Write(nilAngleBytes)
return
}
// Max uint64 is 16 bytes in hex + 2 bytes for '0x' prefix
buf := make([]byte, 18)
// It's simpler to construct the hex string right to left.
base := uint64(16)
i := len(buf) - 1
for num >= base {
buf[i] = hexDigits[num%base]
num /= base
i--
}
buf[i] = hexDigits[num]
// Add '0x' prefix.
i--
buf[i] = 'x'
i--
buf[i] = '0'
// Strip unused leading bytes.
buf = buf[i:]
w.Write(buf)
}
// valuesSorter implements sort.Interface to allow a slice of reflect.Value
// elements to be sorted.
type valuesSorter struct {
values []reflect.Value
strings []string // either nil or same len and values
cs *ConfigState
}
// newValuesSorter initializes a valuesSorter instance, which holds a set of
// surrogate keys on which the data should be sorted. It uses flags in
// ConfigState to decide if and how to populate those surrogate keys.
func newValuesSorter(values []reflect.Value, cs *ConfigState) sort.Interface {
vs := &valuesSorter{values: values, cs: cs}
if canSortSimply(vs.values[0].Kind()) {
return vs
}
if !cs.DisableMethods {
vs.strings = make([]string, len(values))
for i := range vs.values {
b := bytes.Buffer{}
if !handleMethods(cs, &b, vs.values[i]) {
vs.strings = nil
break
}
vs.strings[i] = b.String()
}
}
if vs.strings == nil && cs.SpewKeys {
vs.strings = make([]string, len(values))
for i := range vs.values {
vs.strings[i] = Sprintf("%#v", vs.values[i].Interface())
}
}
return vs
}
// canSortSimply tests whether a reflect.Kind is a primitive that can be sorted
// directly, or whether it should be considered for sorting by surrogate keys
// (if the ConfigState allows it).
func canSortSimply(kind reflect.Kind) bool {
// This switch parallels valueSortLess, except for the default case.
switch kind {
case reflect.Bool:
return true
case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
return true
case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
return true
case reflect.Float32, reflect.Float64:
return true
case reflect.String:
return true
case reflect.Uintptr:
return true
case reflect.Array:
return true
}
return false
}
// Len returns the number of values in the slice. It is part of the
// sort.Interface implementation.
func (s *valuesSorter) Len() int {
return len(s.values)
}
// Swap swaps the values at the passed indices. It is part of the
// sort.Interface implementation.
func (s *valuesSorter) Swap(i, j int) {
s.values[i], s.values[j] = s.values[j], s.values[i]
if s.strings != nil {
s.strings[i], s.strings[j] = s.strings[j], s.strings[i]
}
}
// valueSortLess returns whether the first value should sort before the second
// value. It is used by valueSorter.Less as part of the sort.Interface
// implementation.
func valueSortLess(a, b reflect.Value) bool {
switch a.Kind() {
case reflect.Bool:
return !a.Bool() && b.Bool()
case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
return a.Int() < b.Int()
case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
return a.Uint() < b.Uint()
case reflect.Float32, reflect.Float64:
return a.Float() < b.Float()
case reflect.String:
return a.String() < b.String()
case reflect.Uintptr:
return a.Uint() < b.Uint()
case reflect.Array:
// Compare the contents of both arrays.
l := a.Len()
for i := 0; i < l; i++ {
av := a.Index(i)
bv := b.Index(i)
if av.Interface() == bv.Interface() {
continue
}
return valueSortLess(av, bv)
}
}
return a.String() < b.String()
}
// Less returns whether the value at index i should sort before the
// value at index j. It is part of the sort.Interface implementation.
func (s *valuesSorter) Less(i, j int) bool {
if s.strings == nil {
return valueSortLess(s.values[i], s.values[j])
}
return s.strings[i] < s.strings[j]
}
// sortValues is a sort function that handles both native types and any type that
// can be converted to error or Stringer. Other inputs are sorted according to
// their Value.String() value to ensure display stability.
func sortValues(values []reflect.Value, cs *ConfigState) {
if len(values) == 0 {
return
}
sort.Sort(newValuesSorter(values, cs))
}

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/*
* Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package spew
import (
"bytes"
"fmt"
"io"
"os"
)
// ConfigState houses the configuration options used by spew to format and
// display values. There is a global instance, Config, that is used to control
// all top-level Formatter and Dump functionality. Each ConfigState instance
// provides methods equivalent to the top-level functions.
//
// The zero value for ConfigState provides no indentation. You would typically
// want to set it to a space or a tab.
//
// Alternatively, you can use NewDefaultConfig to get a ConfigState instance
// with default settings. See the documentation of NewDefaultConfig for default
// values.
type ConfigState struct {
// Indent specifies the string to use for each indentation level. The
// global config instance that all top-level functions use set this to a
// single space by default. If you would like more indentation, you might
// set this to a tab with "\t" or perhaps two spaces with " ".
Indent string
// MaxDepth controls the maximum number of levels to descend into nested
// data structures. The default, 0, means there is no limit.
//
// NOTE: Circular data structures are properly detected, so it is not
// necessary to set this value unless you specifically want to limit deeply
// nested data structures.
MaxDepth int
// DisableMethods specifies whether or not error and Stringer interfaces are
// invoked for types that implement them.
DisableMethods bool
// DisablePointerMethods specifies whether or not to check for and invoke
// error and Stringer interfaces on types which only accept a pointer
// receiver when the current type is not a pointer.
//
// NOTE: This might be an unsafe action since calling one of these methods
// with a pointer receiver could technically mutate the value, however,
// in practice, types which choose to satisify an error or Stringer
// interface with a pointer receiver should not be mutating their state
// inside these interface methods. As a result, this option relies on
// access to the unsafe package, so it will not have any effect when
// running in environments without access to the unsafe package such as
// Google App Engine or with the "safe" build tag specified.
DisablePointerMethods bool
// DisablePointerAddresses specifies whether to disable the printing of
// pointer addresses. This is useful when diffing data structures in tests.
DisablePointerAddresses bool
// DisableCapacities specifies whether to disable the printing of capacities
// for arrays, slices, maps and channels. This is useful when diffing
// data structures in tests.
DisableCapacities bool
// ContinueOnMethod specifies whether or not recursion should continue once
// a custom error or Stringer interface is invoked. The default, false,
// means it will print the results of invoking the custom error or Stringer
// interface and return immediately instead of continuing to recurse into
// the internals of the data type.
//
// NOTE: This flag does not have any effect if method invocation is disabled
// via the DisableMethods or DisablePointerMethods options.
ContinueOnMethod bool
// SortKeys specifies map keys should be sorted before being printed. Use
// this to have a more deterministic, diffable output. Note that only
// native types (bool, int, uint, floats, uintptr and string) and types
// that support the error or Stringer interfaces (if methods are
// enabled) are supported, with other types sorted according to the
// reflect.Value.String() output which guarantees display stability.
SortKeys bool
// SpewKeys specifies that, as a last resort attempt, map keys should
// be spewed to strings and sorted by those strings. This is only
// considered if SortKeys is true.
SpewKeys bool
}
// Config is the active configuration of the top-level functions.
// The configuration can be changed by modifying the contents of spew.Config.
var Config = ConfigState{Indent: " "}
// Errorf is a wrapper for fmt.Errorf that treats each argument as if it were
// passed with a Formatter interface returned by c.NewFormatter. It returns
// the formatted string as a value that satisfies error. See NewFormatter
// for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Errorf(format, c.NewFormatter(a), c.NewFormatter(b))
func (c *ConfigState) Errorf(format string, a ...interface{}) (err error) {
return fmt.Errorf(format, c.convertArgs(a)...)
}
// Fprint is a wrapper for fmt.Fprint that treats each argument as if it were
// passed with a Formatter interface returned by c.NewFormatter. It returns
// the number of bytes written and any write error encountered. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Fprint(w, c.NewFormatter(a), c.NewFormatter(b))
func (c *ConfigState) Fprint(w io.Writer, a ...interface{}) (n int, err error) {
return fmt.Fprint(w, c.convertArgs(a)...)
}
// Fprintf is a wrapper for fmt.Fprintf that treats each argument as if it were
// passed with a Formatter interface returned by c.NewFormatter. It returns
// the number of bytes written and any write error encountered. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Fprintf(w, format, c.NewFormatter(a), c.NewFormatter(b))
func (c *ConfigState) Fprintf(w io.Writer, format string, a ...interface{}) (n int, err error) {
return fmt.Fprintf(w, format, c.convertArgs(a)...)
}
// Fprintln is a wrapper for fmt.Fprintln that treats each argument as if it
// passed with a Formatter interface returned by c.NewFormatter. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Fprintln(w, c.NewFormatter(a), c.NewFormatter(b))
func (c *ConfigState) Fprintln(w io.Writer, a ...interface{}) (n int, err error) {
return fmt.Fprintln(w, c.convertArgs(a)...)
}
// Print is a wrapper for fmt.Print that treats each argument as if it were
// passed with a Formatter interface returned by c.NewFormatter. It returns
// the number of bytes written and any write error encountered. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Print(c.NewFormatter(a), c.NewFormatter(b))
func (c *ConfigState) Print(a ...interface{}) (n int, err error) {
return fmt.Print(c.convertArgs(a)...)
}
// Printf is a wrapper for fmt.Printf that treats each argument as if it were
// passed with a Formatter interface returned by c.NewFormatter. It returns
// the number of bytes written and any write error encountered. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Printf(format, c.NewFormatter(a), c.NewFormatter(b))
func (c *ConfigState) Printf(format string, a ...interface{}) (n int, err error) {
return fmt.Printf(format, c.convertArgs(a)...)
}
// Println is a wrapper for fmt.Println that treats each argument as if it were
// passed with a Formatter interface returned by c.NewFormatter. It returns
// the number of bytes written and any write error encountered. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Println(c.NewFormatter(a), c.NewFormatter(b))
func (c *ConfigState) Println(a ...interface{}) (n int, err error) {
return fmt.Println(c.convertArgs(a)...)
}
// Sprint is a wrapper for fmt.Sprint that treats each argument as if it were
// passed with a Formatter interface returned by c.NewFormatter. It returns
// the resulting string. See NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Sprint(c.NewFormatter(a), c.NewFormatter(b))
func (c *ConfigState) Sprint(a ...interface{}) string {
return fmt.Sprint(c.convertArgs(a)...)
}
// Sprintf is a wrapper for fmt.Sprintf that treats each argument as if it were
// passed with a Formatter interface returned by c.NewFormatter. It returns
// the resulting string. See NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Sprintf(format, c.NewFormatter(a), c.NewFormatter(b))
func (c *ConfigState) Sprintf(format string, a ...interface{}) string {
return fmt.Sprintf(format, c.convertArgs(a)...)
}
// Sprintln is a wrapper for fmt.Sprintln that treats each argument as if it
// were passed with a Formatter interface returned by c.NewFormatter. It
// returns the resulting string. See NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Sprintln(c.NewFormatter(a), c.NewFormatter(b))
func (c *ConfigState) Sprintln(a ...interface{}) string {
return fmt.Sprintln(c.convertArgs(a)...)
}
/*
NewFormatter returns a custom formatter that satisfies the fmt.Formatter
interface. As a result, it integrates cleanly with standard fmt package
printing functions. The formatter is useful for inline printing of smaller data
types similar to the standard %v format specifier.
The custom formatter only responds to the %v (most compact), %+v (adds pointer
addresses), %#v (adds types), and %#+v (adds types and pointer addresses) verb
combinations. Any other verbs such as %x and %q will be sent to the the
standard fmt package for formatting. In addition, the custom formatter ignores
the width and precision arguments (however they will still work on the format
specifiers not handled by the custom formatter).
Typically this function shouldn't be called directly. It is much easier to make
use of the custom formatter by calling one of the convenience functions such as
c.Printf, c.Println, or c.Printf.
*/
func (c *ConfigState) NewFormatter(v interface{}) fmt.Formatter {
return newFormatter(c, v)
}
// Fdump formats and displays the passed arguments to io.Writer w. It formats
// exactly the same as Dump.
func (c *ConfigState) Fdump(w io.Writer, a ...interface{}) {
fdump(c, w, a...)
}
/*
Dump displays the passed parameters to standard out with newlines, customizable
indentation, and additional debug information such as complete types and all
pointer addresses used to indirect to the final value. It provides the
following features over the built-in printing facilities provided by the fmt
package:
* Pointers are dereferenced and followed
* Circular data structures are detected and handled properly
* Custom Stringer/error interfaces are optionally invoked, including
on unexported types
* Custom types which only implement the Stringer/error interfaces via
a pointer receiver are optionally invoked when passing non-pointer
variables
* Byte arrays and slices are dumped like the hexdump -C command which
includes offsets, byte values in hex, and ASCII output
The configuration options are controlled by modifying the public members
of c. See ConfigState for options documentation.
See Fdump if you would prefer dumping to an arbitrary io.Writer or Sdump to
get the formatted result as a string.
*/
func (c *ConfigState) Dump(a ...interface{}) {
fdump(c, os.Stdout, a...)
}
// Sdump returns a string with the passed arguments formatted exactly the same
// as Dump.
func (c *ConfigState) Sdump(a ...interface{}) string {
var buf bytes.Buffer
fdump(c, &buf, a...)
return buf.String()
}
// convertArgs accepts a slice of arguments and returns a slice of the same
// length with each argument converted to a spew Formatter interface using
// the ConfigState associated with s.
func (c *ConfigState) convertArgs(args []interface{}) (formatters []interface{}) {
formatters = make([]interface{}, len(args))
for index, arg := range args {
formatters[index] = newFormatter(c, arg)
}
return formatters
}
// NewDefaultConfig returns a ConfigState with the following default settings.
//
// Indent: " "
// MaxDepth: 0
// DisableMethods: false
// DisablePointerMethods: false
// ContinueOnMethod: false
// SortKeys: false
func NewDefaultConfig() *ConfigState {
return &ConfigState{Indent: " "}
}

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/*
* Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
/*
Package spew implements a deep pretty printer for Go data structures to aid in
debugging.
A quick overview of the additional features spew provides over the built-in
printing facilities for Go data types are as follows:
* Pointers are dereferenced and followed
* Circular data structures are detected and handled properly
* Custom Stringer/error interfaces are optionally invoked, including
on unexported types
* Custom types which only implement the Stringer/error interfaces via
a pointer receiver are optionally invoked when passing non-pointer
variables
* Byte arrays and slices are dumped like the hexdump -C command which
includes offsets, byte values in hex, and ASCII output (only when using
Dump style)
There are two different approaches spew allows for dumping Go data structures:
* Dump style which prints with newlines, customizable indentation,
and additional debug information such as types and all pointer addresses
used to indirect to the final value
* A custom Formatter interface that integrates cleanly with the standard fmt
package and replaces %v, %+v, %#v, and %#+v to provide inline printing
similar to the default %v while providing the additional functionality
outlined above and passing unsupported format verbs such as %x and %q
along to fmt
Quick Start
This section demonstrates how to quickly get started with spew. See the
sections below for further details on formatting and configuration options.
To dump a variable with full newlines, indentation, type, and pointer
information use Dump, Fdump, or Sdump:
spew.Dump(myVar1, myVar2, ...)
spew.Fdump(someWriter, myVar1, myVar2, ...)
str := spew.Sdump(myVar1, myVar2, ...)
Alternatively, if you would prefer to use format strings with a compacted inline
printing style, use the convenience wrappers Printf, Fprintf, etc with
%v (most compact), %+v (adds pointer addresses), %#v (adds types), or
%#+v (adds types and pointer addresses):
spew.Printf("myVar1: %v -- myVar2: %+v", myVar1, myVar2)
spew.Printf("myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
spew.Fprintf(someWriter, "myVar1: %v -- myVar2: %+v", myVar1, myVar2)
spew.Fprintf(someWriter, "myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
Configuration Options
Configuration of spew is handled by fields in the ConfigState type. For
convenience, all of the top-level functions use a global state available
via the spew.Config global.
It is also possible to create a ConfigState instance that provides methods
equivalent to the top-level functions. This allows concurrent configuration
options. See the ConfigState documentation for more details.
The following configuration options are available:
* Indent
String to use for each indentation level for Dump functions.
It is a single space by default. A popular alternative is "\t".
* MaxDepth
Maximum number of levels to descend into nested data structures.
There is no limit by default.
* DisableMethods
Disables invocation of error and Stringer interface methods.
Method invocation is enabled by default.
* DisablePointerMethods
Disables invocation of error and Stringer interface methods on types
which only accept pointer receivers from non-pointer variables.
Pointer method invocation is enabled by default.
* DisablePointerAddresses
DisablePointerAddresses specifies whether to disable the printing of
pointer addresses. This is useful when diffing data structures in tests.
* DisableCapacities
DisableCapacities specifies whether to disable the printing of
capacities for arrays, slices, maps and channels. This is useful when
diffing data structures in tests.
* ContinueOnMethod
Enables recursion into types after invoking error and Stringer interface
methods. Recursion after method invocation is disabled by default.
* SortKeys
Specifies map keys should be sorted before being printed. Use
this to have a more deterministic, diffable output. Note that
only native types (bool, int, uint, floats, uintptr and string)
and types which implement error or Stringer interfaces are
supported with other types sorted according to the
reflect.Value.String() output which guarantees display
stability. Natural map order is used by default.
* SpewKeys
Specifies that, as a last resort attempt, map keys should be
spewed to strings and sorted by those strings. This is only
considered if SortKeys is true.
Dump Usage
Simply call spew.Dump with a list of variables you want to dump:
spew.Dump(myVar1, myVar2, ...)
You may also call spew.Fdump if you would prefer to output to an arbitrary
io.Writer. For example, to dump to standard error:
spew.Fdump(os.Stderr, myVar1, myVar2, ...)
A third option is to call spew.Sdump to get the formatted output as a string:
str := spew.Sdump(myVar1, myVar2, ...)
Sample Dump Output
See the Dump example for details on the setup of the types and variables being
shown here.
(main.Foo) {
unexportedField: (*main.Bar)(0xf84002e210)({
flag: (main.Flag) flagTwo,
data: (uintptr) <nil>
}),
ExportedField: (map[interface {}]interface {}) (len=1) {
(string) (len=3) "one": (bool) true
}
}
Byte (and uint8) arrays and slices are displayed uniquely like the hexdump -C
command as shown.
([]uint8) (len=32 cap=32) {
00000000 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f 20 |............... |
00000010 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f 30 |!"#$%&'()*+,-./0|
00000020 31 32 |12|
}
Custom Formatter
Spew provides a custom formatter that implements the fmt.Formatter interface
so that it integrates cleanly with standard fmt package printing functions. The
formatter is useful for inline printing of smaller data types similar to the
standard %v format specifier.
The custom formatter only responds to the %v (most compact), %+v (adds pointer
addresses), %#v (adds types), or %#+v (adds types and pointer addresses) verb
combinations. Any other verbs such as %x and %q will be sent to the the
standard fmt package for formatting. In addition, the custom formatter ignores
the width and precision arguments (however they will still work on the format
specifiers not handled by the custom formatter).
Custom Formatter Usage
The simplest way to make use of the spew custom formatter is to call one of the
convenience functions such as spew.Printf, spew.Println, or spew.Printf. The
functions have syntax you are most likely already familiar with:
spew.Printf("myVar1: %v -- myVar2: %+v", myVar1, myVar2)
spew.Printf("myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
spew.Println(myVar, myVar2)
spew.Fprintf(os.Stderr, "myVar1: %v -- myVar2: %+v", myVar1, myVar2)
spew.Fprintf(os.Stderr, "myVar3: %#v -- myVar4: %#+v", myVar3, myVar4)
See the Index for the full list convenience functions.
Sample Formatter Output
Double pointer to a uint8:
%v: <**>5
%+v: <**>(0xf8400420d0->0xf8400420c8)5
%#v: (**uint8)5
%#+v: (**uint8)(0xf8400420d0->0xf8400420c8)5
Pointer to circular struct with a uint8 field and a pointer to itself:
%v: <*>{1 <*><shown>}
%+v: <*>(0xf84003e260){ui8:1 c:<*>(0xf84003e260)<shown>}
%#v: (*main.circular){ui8:(uint8)1 c:(*main.circular)<shown>}
%#+v: (*main.circular)(0xf84003e260){ui8:(uint8)1 c:(*main.circular)(0xf84003e260)<shown>}
See the Printf example for details on the setup of variables being shown
here.
Errors
Since it is possible for custom Stringer/error interfaces to panic, spew
detects them and handles them internally by printing the panic information
inline with the output. Since spew is intended to provide deep pretty printing
capabilities on structures, it intentionally does not return any errors.
*/
package spew

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/*
* Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package spew
import (
"bytes"
"encoding/hex"
"fmt"
"io"
"os"
"reflect"
"regexp"
"strconv"
"strings"
)
var (
// uint8Type is a reflect.Type representing a uint8. It is used to
// convert cgo types to uint8 slices for hexdumping.
uint8Type = reflect.TypeOf(uint8(0))
// cCharRE is a regular expression that matches a cgo char.
// It is used to detect character arrays to hexdump them.
cCharRE = regexp.MustCompile(`^.*\._Ctype_char$`)
// cUnsignedCharRE is a regular expression that matches a cgo unsigned
// char. It is used to detect unsigned character arrays to hexdump
// them.
cUnsignedCharRE = regexp.MustCompile(`^.*\._Ctype_unsignedchar$`)
// cUint8tCharRE is a regular expression that matches a cgo uint8_t.
// It is used to detect uint8_t arrays to hexdump them.
cUint8tCharRE = regexp.MustCompile(`^.*\._Ctype_uint8_t$`)
)
// dumpState contains information about the state of a dump operation.
type dumpState struct {
w io.Writer
depth int
pointers map[uintptr]int
ignoreNextType bool
ignoreNextIndent bool
cs *ConfigState
}
// indent performs indentation according to the depth level and cs.Indent
// option.
func (d *dumpState) indent() {
if d.ignoreNextIndent {
d.ignoreNextIndent = false
return
}
d.w.Write(bytes.Repeat([]byte(d.cs.Indent), d.depth))
}
// unpackValue returns values inside of non-nil interfaces when possible.
// This is useful for data types like structs, arrays, slices, and maps which
// can contain varying types packed inside an interface.
func (d *dumpState) unpackValue(v reflect.Value) reflect.Value {
if v.Kind() == reflect.Interface && !v.IsNil() {
v = v.Elem()
}
return v
}
// dumpPtr handles formatting of pointers by indirecting them as necessary.
func (d *dumpState) dumpPtr(v reflect.Value) {
// Remove pointers at or below the current depth from map used to detect
// circular refs.
for k, depth := range d.pointers {
if depth >= d.depth {
delete(d.pointers, k)
}
}
// Keep list of all dereferenced pointers to show later.
pointerChain := make([]uintptr, 0)
// Figure out how many levels of indirection there are by dereferencing
// pointers and unpacking interfaces down the chain while detecting circular
// references.
nilFound := false
cycleFound := false
indirects := 0
ve := v
for ve.Kind() == reflect.Ptr {
if ve.IsNil() {
nilFound = true
break
}
indirects++
addr := ve.Pointer()
pointerChain = append(pointerChain, addr)
if pd, ok := d.pointers[addr]; ok && pd < d.depth {
cycleFound = true
indirects--
break
}
d.pointers[addr] = d.depth
ve = ve.Elem()
if ve.Kind() == reflect.Interface {
if ve.IsNil() {
nilFound = true
break
}
ve = ve.Elem()
}
}
// Display type information.
d.w.Write(openParenBytes)
d.w.Write(bytes.Repeat(asteriskBytes, indirects))
d.w.Write([]byte(ve.Type().String()))
d.w.Write(closeParenBytes)
// Display pointer information.
if !d.cs.DisablePointerAddresses && len(pointerChain) > 0 {
d.w.Write(openParenBytes)
for i, addr := range pointerChain {
if i > 0 {
d.w.Write(pointerChainBytes)
}
printHexPtr(d.w, addr)
}
d.w.Write(closeParenBytes)
}
// Display dereferenced value.
d.w.Write(openParenBytes)
switch {
case nilFound:
d.w.Write(nilAngleBytes)
case cycleFound:
d.w.Write(circularBytes)
default:
d.ignoreNextType = true
d.dump(ve)
}
d.w.Write(closeParenBytes)
}
// dumpSlice handles formatting of arrays and slices. Byte (uint8 under
// reflection) arrays and slices are dumped in hexdump -C fashion.
func (d *dumpState) dumpSlice(v reflect.Value) {
// Determine whether this type should be hex dumped or not. Also,
// for types which should be hexdumped, try to use the underlying data
// first, then fall back to trying to convert them to a uint8 slice.
var buf []uint8
doConvert := false
doHexDump := false
numEntries := v.Len()
if numEntries > 0 {
vt := v.Index(0).Type()
vts := vt.String()
switch {
// C types that need to be converted.
case cCharRE.MatchString(vts):
fallthrough
case cUnsignedCharRE.MatchString(vts):
fallthrough
case cUint8tCharRE.MatchString(vts):
doConvert = true
// Try to use existing uint8 slices and fall back to converting
// and copying if that fails.
case vt.Kind() == reflect.Uint8:
// We need an addressable interface to convert the type
// to a byte slice. However, the reflect package won't
// give us an interface on certain things like
// unexported struct fields in order to enforce
// visibility rules. We use unsafe, when available, to
// bypass these restrictions since this package does not
// mutate the values.
vs := v
if !vs.CanInterface() || !vs.CanAddr() {
vs = unsafeReflectValue(vs)
}
if !UnsafeDisabled {
vs = vs.Slice(0, numEntries)
// Use the existing uint8 slice if it can be
// type asserted.
iface := vs.Interface()
if slice, ok := iface.([]uint8); ok {
buf = slice
doHexDump = true
break
}
}
// The underlying data needs to be converted if it can't
// be type asserted to a uint8 slice.
doConvert = true
}
// Copy and convert the underlying type if needed.
if doConvert && vt.ConvertibleTo(uint8Type) {
// Convert and copy each element into a uint8 byte
// slice.
buf = make([]uint8, numEntries)
for i := 0; i < numEntries; i++ {
vv := v.Index(i)
buf[i] = uint8(vv.Convert(uint8Type).Uint())
}
doHexDump = true
}
}
// Hexdump the entire slice as needed.
if doHexDump {
indent := strings.Repeat(d.cs.Indent, d.depth)
str := indent + hex.Dump(buf)
str = strings.Replace(str, "\n", "\n"+indent, -1)
str = strings.TrimRight(str, d.cs.Indent)
d.w.Write([]byte(str))
return
}
// Recursively call dump for each item.
for i := 0; i < numEntries; i++ {
d.dump(d.unpackValue(v.Index(i)))
if i < (numEntries - 1) {
d.w.Write(commaNewlineBytes)
} else {
d.w.Write(newlineBytes)
}
}
}
// dump is the main workhorse for dumping a value. It uses the passed reflect
// value to figure out what kind of object we are dealing with and formats it
// appropriately. It is a recursive function, however circular data structures
// are detected and handled properly.
func (d *dumpState) dump(v reflect.Value) {
// Handle invalid reflect values immediately.
kind := v.Kind()
if kind == reflect.Invalid {
d.w.Write(invalidAngleBytes)
return
}
// Handle pointers specially.
if kind == reflect.Ptr {
d.indent()
d.dumpPtr(v)
return
}
// Print type information unless already handled elsewhere.
if !d.ignoreNextType {
d.indent()
d.w.Write(openParenBytes)
d.w.Write([]byte(v.Type().String()))
d.w.Write(closeParenBytes)
d.w.Write(spaceBytes)
}
d.ignoreNextType = false
// Display length and capacity if the built-in len and cap functions
// work with the value's kind and the len/cap itself is non-zero.
valueLen, valueCap := 0, 0
switch v.Kind() {
case reflect.Array, reflect.Slice, reflect.Chan:
valueLen, valueCap = v.Len(), v.Cap()
case reflect.Map, reflect.String:
valueLen = v.Len()
}
if valueLen != 0 || !d.cs.DisableCapacities && valueCap != 0 {
d.w.Write(openParenBytes)
if valueLen != 0 {
d.w.Write(lenEqualsBytes)
printInt(d.w, int64(valueLen), 10)
}
if !d.cs.DisableCapacities && valueCap != 0 {
if valueLen != 0 {
d.w.Write(spaceBytes)
}
d.w.Write(capEqualsBytes)
printInt(d.w, int64(valueCap), 10)
}
d.w.Write(closeParenBytes)
d.w.Write(spaceBytes)
}
// Call Stringer/error interfaces if they exist and the handle methods flag
// is enabled
if !d.cs.DisableMethods {
if (kind != reflect.Invalid) && (kind != reflect.Interface) {
if handled := handleMethods(d.cs, d.w, v); handled {
return
}
}
}
switch kind {
case reflect.Invalid:
// Do nothing. We should never get here since invalid has already
// been handled above.
case reflect.Bool:
printBool(d.w, v.Bool())
case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
printInt(d.w, v.Int(), 10)
case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
printUint(d.w, v.Uint(), 10)
case reflect.Float32:
printFloat(d.w, v.Float(), 32)
case reflect.Float64:
printFloat(d.w, v.Float(), 64)
case reflect.Complex64:
printComplex(d.w, v.Complex(), 32)
case reflect.Complex128:
printComplex(d.w, v.Complex(), 64)
case reflect.Slice:
if v.IsNil() {
d.w.Write(nilAngleBytes)
break
}
fallthrough
case reflect.Array:
d.w.Write(openBraceNewlineBytes)
d.depth++
if (d.cs.MaxDepth != 0) && (d.depth > d.cs.MaxDepth) {
d.indent()
d.w.Write(maxNewlineBytes)
} else {
d.dumpSlice(v)
}
d.depth--
d.indent()
d.w.Write(closeBraceBytes)
case reflect.String:
d.w.Write([]byte(strconv.Quote(v.String())))
case reflect.Interface:
// The only time we should get here is for nil interfaces due to
// unpackValue calls.
if v.IsNil() {
d.w.Write(nilAngleBytes)
}
case reflect.Ptr:
// Do nothing. We should never get here since pointers have already
// been handled above.
case reflect.Map:
// nil maps should be indicated as different than empty maps
if v.IsNil() {
d.w.Write(nilAngleBytes)
break
}
d.w.Write(openBraceNewlineBytes)
d.depth++
if (d.cs.MaxDepth != 0) && (d.depth > d.cs.MaxDepth) {
d.indent()
d.w.Write(maxNewlineBytes)
} else {
numEntries := v.Len()
keys := v.MapKeys()
if d.cs.SortKeys {
sortValues(keys, d.cs)
}
for i, key := range keys {
d.dump(d.unpackValue(key))
d.w.Write(colonSpaceBytes)
d.ignoreNextIndent = true
d.dump(d.unpackValue(v.MapIndex(key)))
if i < (numEntries - 1) {
d.w.Write(commaNewlineBytes)
} else {
d.w.Write(newlineBytes)
}
}
}
d.depth--
d.indent()
d.w.Write(closeBraceBytes)
case reflect.Struct:
d.w.Write(openBraceNewlineBytes)
d.depth++
if (d.cs.MaxDepth != 0) && (d.depth > d.cs.MaxDepth) {
d.indent()
d.w.Write(maxNewlineBytes)
} else {
vt := v.Type()
numFields := v.NumField()
for i := 0; i < numFields; i++ {
d.indent()
vtf := vt.Field(i)
d.w.Write([]byte(vtf.Name))
d.w.Write(colonSpaceBytes)
d.ignoreNextIndent = true
d.dump(d.unpackValue(v.Field(i)))
if i < (numFields - 1) {
d.w.Write(commaNewlineBytes)
} else {
d.w.Write(newlineBytes)
}
}
}
d.depth--
d.indent()
d.w.Write(closeBraceBytes)
case reflect.Uintptr:
printHexPtr(d.w, uintptr(v.Uint()))
case reflect.UnsafePointer, reflect.Chan, reflect.Func:
printHexPtr(d.w, v.Pointer())
// There were not any other types at the time this code was written, but
// fall back to letting the default fmt package handle it in case any new
// types are added.
default:
if v.CanInterface() {
fmt.Fprintf(d.w, "%v", v.Interface())
} else {
fmt.Fprintf(d.w, "%v", v.String())
}
}
}
// fdump is a helper function to consolidate the logic from the various public
// methods which take varying writers and config states.
func fdump(cs *ConfigState, w io.Writer, a ...interface{}) {
for _, arg := range a {
if arg == nil {
w.Write(interfaceBytes)
w.Write(spaceBytes)
w.Write(nilAngleBytes)
w.Write(newlineBytes)
continue
}
d := dumpState{w: w, cs: cs}
d.pointers = make(map[uintptr]int)
d.dump(reflect.ValueOf(arg))
d.w.Write(newlineBytes)
}
}
// Fdump formats and displays the passed arguments to io.Writer w. It formats
// exactly the same as Dump.
func Fdump(w io.Writer, a ...interface{}) {
fdump(&Config, w, a...)
}
// Sdump returns a string with the passed arguments formatted exactly the same
// as Dump.
func Sdump(a ...interface{}) string {
var buf bytes.Buffer
fdump(&Config, &buf, a...)
return buf.String()
}
/*
Dump displays the passed parameters to standard out with newlines, customizable
indentation, and additional debug information such as complete types and all
pointer addresses used to indirect to the final value. It provides the
following features over the built-in printing facilities provided by the fmt
package:
* Pointers are dereferenced and followed
* Circular data structures are detected and handled properly
* Custom Stringer/error interfaces are optionally invoked, including
on unexported types
* Custom types which only implement the Stringer/error interfaces via
a pointer receiver are optionally invoked when passing non-pointer
variables
* Byte arrays and slices are dumped like the hexdump -C command which
includes offsets, byte values in hex, and ASCII output
The configuration options are controlled by an exported package global,
spew.Config. See ConfigState for options documentation.
See Fdump if you would prefer dumping to an arbitrary io.Writer or Sdump to
get the formatted result as a string.
*/
func Dump(a ...interface{}) {
fdump(&Config, os.Stdout, a...)
}

419
vendor/github.com/davecgh/go-spew/spew/format.go generated vendored Normal file
View File

@@ -0,0 +1,419 @@
/*
* Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package spew
import (
"bytes"
"fmt"
"reflect"
"strconv"
"strings"
)
// supportedFlags is a list of all the character flags supported by fmt package.
const supportedFlags = "0-+# "
// formatState implements the fmt.Formatter interface and contains information
// about the state of a formatting operation. The NewFormatter function can
// be used to get a new Formatter which can be used directly as arguments
// in standard fmt package printing calls.
type formatState struct {
value interface{}
fs fmt.State
depth int
pointers map[uintptr]int
ignoreNextType bool
cs *ConfigState
}
// buildDefaultFormat recreates the original format string without precision
// and width information to pass in to fmt.Sprintf in the case of an
// unrecognized type. Unless new types are added to the language, this
// function won't ever be called.
func (f *formatState) buildDefaultFormat() (format string) {
buf := bytes.NewBuffer(percentBytes)
for _, flag := range supportedFlags {
if f.fs.Flag(int(flag)) {
buf.WriteRune(flag)
}
}
buf.WriteRune('v')
format = buf.String()
return format
}
// constructOrigFormat recreates the original format string including precision
// and width information to pass along to the standard fmt package. This allows
// automatic deferral of all format strings this package doesn't support.
func (f *formatState) constructOrigFormat(verb rune) (format string) {
buf := bytes.NewBuffer(percentBytes)
for _, flag := range supportedFlags {
if f.fs.Flag(int(flag)) {
buf.WriteRune(flag)
}
}
if width, ok := f.fs.Width(); ok {
buf.WriteString(strconv.Itoa(width))
}
if precision, ok := f.fs.Precision(); ok {
buf.Write(precisionBytes)
buf.WriteString(strconv.Itoa(precision))
}
buf.WriteRune(verb)
format = buf.String()
return format
}
// unpackValue returns values inside of non-nil interfaces when possible and
// ensures that types for values which have been unpacked from an interface
// are displayed when the show types flag is also set.
// This is useful for data types like structs, arrays, slices, and maps which
// can contain varying types packed inside an interface.
func (f *formatState) unpackValue(v reflect.Value) reflect.Value {
if v.Kind() == reflect.Interface {
f.ignoreNextType = false
if !v.IsNil() {
v = v.Elem()
}
}
return v
}
// formatPtr handles formatting of pointers by indirecting them as necessary.
func (f *formatState) formatPtr(v reflect.Value) {
// Display nil if top level pointer is nil.
showTypes := f.fs.Flag('#')
if v.IsNil() && (!showTypes || f.ignoreNextType) {
f.fs.Write(nilAngleBytes)
return
}
// Remove pointers at or below the current depth from map used to detect
// circular refs.
for k, depth := range f.pointers {
if depth >= f.depth {
delete(f.pointers, k)
}
}
// Keep list of all dereferenced pointers to possibly show later.
pointerChain := make([]uintptr, 0)
// Figure out how many levels of indirection there are by derferencing
// pointers and unpacking interfaces down the chain while detecting circular
// references.
nilFound := false
cycleFound := false
indirects := 0
ve := v
for ve.Kind() == reflect.Ptr {
if ve.IsNil() {
nilFound = true
break
}
indirects++
addr := ve.Pointer()
pointerChain = append(pointerChain, addr)
if pd, ok := f.pointers[addr]; ok && pd < f.depth {
cycleFound = true
indirects--
break
}
f.pointers[addr] = f.depth
ve = ve.Elem()
if ve.Kind() == reflect.Interface {
if ve.IsNil() {
nilFound = true
break
}
ve = ve.Elem()
}
}
// Display type or indirection level depending on flags.
if showTypes && !f.ignoreNextType {
f.fs.Write(openParenBytes)
f.fs.Write(bytes.Repeat(asteriskBytes, indirects))
f.fs.Write([]byte(ve.Type().String()))
f.fs.Write(closeParenBytes)
} else {
if nilFound || cycleFound {
indirects += strings.Count(ve.Type().String(), "*")
}
f.fs.Write(openAngleBytes)
f.fs.Write([]byte(strings.Repeat("*", indirects)))
f.fs.Write(closeAngleBytes)
}
// Display pointer information depending on flags.
if f.fs.Flag('+') && (len(pointerChain) > 0) {
f.fs.Write(openParenBytes)
for i, addr := range pointerChain {
if i > 0 {
f.fs.Write(pointerChainBytes)
}
printHexPtr(f.fs, addr)
}
f.fs.Write(closeParenBytes)
}
// Display dereferenced value.
switch {
case nilFound:
f.fs.Write(nilAngleBytes)
case cycleFound:
f.fs.Write(circularShortBytes)
default:
f.ignoreNextType = true
f.format(ve)
}
}
// format is the main workhorse for providing the Formatter interface. It
// uses the passed reflect value to figure out what kind of object we are
// dealing with and formats it appropriately. It is a recursive function,
// however circular data structures are detected and handled properly.
func (f *formatState) format(v reflect.Value) {
// Handle invalid reflect values immediately.
kind := v.Kind()
if kind == reflect.Invalid {
f.fs.Write(invalidAngleBytes)
return
}
// Handle pointers specially.
if kind == reflect.Ptr {
f.formatPtr(v)
return
}
// Print type information unless already handled elsewhere.
if !f.ignoreNextType && f.fs.Flag('#') {
f.fs.Write(openParenBytes)
f.fs.Write([]byte(v.Type().String()))
f.fs.Write(closeParenBytes)
}
f.ignoreNextType = false
// Call Stringer/error interfaces if they exist and the handle methods
// flag is enabled.
if !f.cs.DisableMethods {
if (kind != reflect.Invalid) && (kind != reflect.Interface) {
if handled := handleMethods(f.cs, f.fs, v); handled {
return
}
}
}
switch kind {
case reflect.Invalid:
// Do nothing. We should never get here since invalid has already
// been handled above.
case reflect.Bool:
printBool(f.fs, v.Bool())
case reflect.Int8, reflect.Int16, reflect.Int32, reflect.Int64, reflect.Int:
printInt(f.fs, v.Int(), 10)
case reflect.Uint8, reflect.Uint16, reflect.Uint32, reflect.Uint64, reflect.Uint:
printUint(f.fs, v.Uint(), 10)
case reflect.Float32:
printFloat(f.fs, v.Float(), 32)
case reflect.Float64:
printFloat(f.fs, v.Float(), 64)
case reflect.Complex64:
printComplex(f.fs, v.Complex(), 32)
case reflect.Complex128:
printComplex(f.fs, v.Complex(), 64)
case reflect.Slice:
if v.IsNil() {
f.fs.Write(nilAngleBytes)
break
}
fallthrough
case reflect.Array:
f.fs.Write(openBracketBytes)
f.depth++
if (f.cs.MaxDepth != 0) && (f.depth > f.cs.MaxDepth) {
f.fs.Write(maxShortBytes)
} else {
numEntries := v.Len()
for i := 0; i < numEntries; i++ {
if i > 0 {
f.fs.Write(spaceBytes)
}
f.ignoreNextType = true
f.format(f.unpackValue(v.Index(i)))
}
}
f.depth--
f.fs.Write(closeBracketBytes)
case reflect.String:
f.fs.Write([]byte(v.String()))
case reflect.Interface:
// The only time we should get here is for nil interfaces due to
// unpackValue calls.
if v.IsNil() {
f.fs.Write(nilAngleBytes)
}
case reflect.Ptr:
// Do nothing. We should never get here since pointers have already
// been handled above.
case reflect.Map:
// nil maps should be indicated as different than empty maps
if v.IsNil() {
f.fs.Write(nilAngleBytes)
break
}
f.fs.Write(openMapBytes)
f.depth++
if (f.cs.MaxDepth != 0) && (f.depth > f.cs.MaxDepth) {
f.fs.Write(maxShortBytes)
} else {
keys := v.MapKeys()
if f.cs.SortKeys {
sortValues(keys, f.cs)
}
for i, key := range keys {
if i > 0 {
f.fs.Write(spaceBytes)
}
f.ignoreNextType = true
f.format(f.unpackValue(key))
f.fs.Write(colonBytes)
f.ignoreNextType = true
f.format(f.unpackValue(v.MapIndex(key)))
}
}
f.depth--
f.fs.Write(closeMapBytes)
case reflect.Struct:
numFields := v.NumField()
f.fs.Write(openBraceBytes)
f.depth++
if (f.cs.MaxDepth != 0) && (f.depth > f.cs.MaxDepth) {
f.fs.Write(maxShortBytes)
} else {
vt := v.Type()
for i := 0; i < numFields; i++ {
if i > 0 {
f.fs.Write(spaceBytes)
}
vtf := vt.Field(i)
if f.fs.Flag('+') || f.fs.Flag('#') {
f.fs.Write([]byte(vtf.Name))
f.fs.Write(colonBytes)
}
f.format(f.unpackValue(v.Field(i)))
}
}
f.depth--
f.fs.Write(closeBraceBytes)
case reflect.Uintptr:
printHexPtr(f.fs, uintptr(v.Uint()))
case reflect.UnsafePointer, reflect.Chan, reflect.Func:
printHexPtr(f.fs, v.Pointer())
// There were not any other types at the time this code was written, but
// fall back to letting the default fmt package handle it if any get added.
default:
format := f.buildDefaultFormat()
if v.CanInterface() {
fmt.Fprintf(f.fs, format, v.Interface())
} else {
fmt.Fprintf(f.fs, format, v.String())
}
}
}
// Format satisfies the fmt.Formatter interface. See NewFormatter for usage
// details.
func (f *formatState) Format(fs fmt.State, verb rune) {
f.fs = fs
// Use standard formatting for verbs that are not v.
if verb != 'v' {
format := f.constructOrigFormat(verb)
fmt.Fprintf(fs, format, f.value)
return
}
if f.value == nil {
if fs.Flag('#') {
fs.Write(interfaceBytes)
}
fs.Write(nilAngleBytes)
return
}
f.format(reflect.ValueOf(f.value))
}
// newFormatter is a helper function to consolidate the logic from the various
// public methods which take varying config states.
func newFormatter(cs *ConfigState, v interface{}) fmt.Formatter {
fs := &formatState{value: v, cs: cs}
fs.pointers = make(map[uintptr]int)
return fs
}
/*
NewFormatter returns a custom formatter that satisfies the fmt.Formatter
interface. As a result, it integrates cleanly with standard fmt package
printing functions. The formatter is useful for inline printing of smaller data
types similar to the standard %v format specifier.
The custom formatter only responds to the %v (most compact), %+v (adds pointer
addresses), %#v (adds types), or %#+v (adds types and pointer addresses) verb
combinations. Any other verbs such as %x and %q will be sent to the the
standard fmt package for formatting. In addition, the custom formatter ignores
the width and precision arguments (however they will still work on the format
specifiers not handled by the custom formatter).
Typically this function shouldn't be called directly. It is much easier to make
use of the custom formatter by calling one of the convenience functions such as
Printf, Println, or Fprintf.
*/
func NewFormatter(v interface{}) fmt.Formatter {
return newFormatter(&Config, v)
}

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/*
* Copyright (c) 2013-2016 Dave Collins <dave@davec.name>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
package spew
import (
"fmt"
"io"
)
// Errorf is a wrapper for fmt.Errorf that treats each argument as if it were
// passed with a default Formatter interface returned by NewFormatter. It
// returns the formatted string as a value that satisfies error. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Errorf(format, spew.NewFormatter(a), spew.NewFormatter(b))
func Errorf(format string, a ...interface{}) (err error) {
return fmt.Errorf(format, convertArgs(a)...)
}
// Fprint is a wrapper for fmt.Fprint that treats each argument as if it were
// passed with a default Formatter interface returned by NewFormatter. It
// returns the number of bytes written and any write error encountered. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Fprint(w, spew.NewFormatter(a), spew.NewFormatter(b))
func Fprint(w io.Writer, a ...interface{}) (n int, err error) {
return fmt.Fprint(w, convertArgs(a)...)
}
// Fprintf is a wrapper for fmt.Fprintf that treats each argument as if it were
// passed with a default Formatter interface returned by NewFormatter. It
// returns the number of bytes written and any write error encountered. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Fprintf(w, format, spew.NewFormatter(a), spew.NewFormatter(b))
func Fprintf(w io.Writer, format string, a ...interface{}) (n int, err error) {
return fmt.Fprintf(w, format, convertArgs(a)...)
}
// Fprintln is a wrapper for fmt.Fprintln that treats each argument as if it
// passed with a default Formatter interface returned by NewFormatter. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Fprintln(w, spew.NewFormatter(a), spew.NewFormatter(b))
func Fprintln(w io.Writer, a ...interface{}) (n int, err error) {
return fmt.Fprintln(w, convertArgs(a)...)
}
// Print is a wrapper for fmt.Print that treats each argument as if it were
// passed with a default Formatter interface returned by NewFormatter. It
// returns the number of bytes written and any write error encountered. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Print(spew.NewFormatter(a), spew.NewFormatter(b))
func Print(a ...interface{}) (n int, err error) {
return fmt.Print(convertArgs(a)...)
}
// Printf is a wrapper for fmt.Printf that treats each argument as if it were
// passed with a default Formatter interface returned by NewFormatter. It
// returns the number of bytes written and any write error encountered. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Printf(format, spew.NewFormatter(a), spew.NewFormatter(b))
func Printf(format string, a ...interface{}) (n int, err error) {
return fmt.Printf(format, convertArgs(a)...)
}
// Println is a wrapper for fmt.Println that treats each argument as if it were
// passed with a default Formatter interface returned by NewFormatter. It
// returns the number of bytes written and any write error encountered. See
// NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Println(spew.NewFormatter(a), spew.NewFormatter(b))
func Println(a ...interface{}) (n int, err error) {
return fmt.Println(convertArgs(a)...)
}
// Sprint is a wrapper for fmt.Sprint that treats each argument as if it were
// passed with a default Formatter interface returned by NewFormatter. It
// returns the resulting string. See NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Sprint(spew.NewFormatter(a), spew.NewFormatter(b))
func Sprint(a ...interface{}) string {
return fmt.Sprint(convertArgs(a)...)
}
// Sprintf is a wrapper for fmt.Sprintf that treats each argument as if it were
// passed with a default Formatter interface returned by NewFormatter. It
// returns the resulting string. See NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Sprintf(format, spew.NewFormatter(a), spew.NewFormatter(b))
func Sprintf(format string, a ...interface{}) string {
return fmt.Sprintf(format, convertArgs(a)...)
}
// Sprintln is a wrapper for fmt.Sprintln that treats each argument as if it
// were passed with a default Formatter interface returned by NewFormatter. It
// returns the resulting string. See NewFormatter for formatting details.
//
// This function is shorthand for the following syntax:
//
// fmt.Sprintln(spew.NewFormatter(a), spew.NewFormatter(b))
func Sprintln(a ...interface{}) string {
return fmt.Sprintln(convertArgs(a)...)
}
// convertArgs accepts a slice of arguments and returns a slice of the same
// length with each argument converted to a default spew Formatter interface.
func convertArgs(args []interface{}) (formatters []interface{}) {
formatters = make([]interface{}, len(args))
for index, arg := range args {
formatters[index] = NewFormatter(arg)
}
return formatters
}

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# Changelog
## [1.6.0](https://github.com/google/uuid/compare/v1.5.0...v1.6.0) (2024-01-16)
### Features
* add Max UUID constant ([#149](https://github.com/google/uuid/issues/149)) ([c58770e](https://github.com/google/uuid/commit/c58770eb495f55fe2ced6284f93c5158a62e53e3))
### Bug Fixes
* fix typo in version 7 uuid documentation ([#153](https://github.com/google/uuid/issues/153)) ([016b199](https://github.com/google/uuid/commit/016b199544692f745ffc8867b914129ecb47ef06))
* Monotonicity in UUIDv7 ([#150](https://github.com/google/uuid/issues/150)) ([a2b2b32](https://github.com/google/uuid/commit/a2b2b32373ff0b1a312b7fdf6d38a977099698a6))
## [1.5.0](https://github.com/google/uuid/compare/v1.4.0...v1.5.0) (2023-12-12)
### Features
* Validate UUID without creating new UUID ([#141](https://github.com/google/uuid/issues/141)) ([9ee7366](https://github.com/google/uuid/commit/9ee7366e66c9ad96bab89139418a713dc584ae29))
## [1.4.0](https://github.com/google/uuid/compare/v1.3.1...v1.4.0) (2023-10-26)
### Features
* UUIDs slice type with Strings() convenience method ([#133](https://github.com/google/uuid/issues/133)) ([cd5fbbd](https://github.com/google/uuid/commit/cd5fbbdd02f3e3467ac18940e07e062be1f864b4))
### Fixes
* Clarify that Parse's job is to parse but not necessarily validate strings. (Documents current behavior)
## [1.3.1](https://github.com/google/uuid/compare/v1.3.0...v1.3.1) (2023-08-18)
### Bug Fixes
* Use .EqualFold() to parse urn prefixed UUIDs ([#118](https://github.com/google/uuid/issues/118)) ([574e687](https://github.com/google/uuid/commit/574e6874943741fb99d41764c705173ada5293f0))
## Changelog

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# How to contribute
We definitely welcome patches and contribution to this project!
### Tips
Commits must be formatted according to the [Conventional Commits Specification](https://www.conventionalcommits.org).
Always try to include a test case! If it is not possible or not necessary,
please explain why in the pull request description.
### Releasing
Commits that would precipitate a SemVer change, as described in the Conventional
Commits Specification, will trigger [`release-please`](https://github.com/google-github-actions/release-please-action)
to create a release candidate pull request. Once submitted, `release-please`
will create a release.
For tips on how to work with `release-please`, see its documentation.
### Legal requirements
In order to protect both you and ourselves, you will need to sign the
[Contributor License Agreement](https://cla.developers.google.com/clas).
You may have already signed it for other Google projects.

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Paul Borman <borman@google.com>
bmatsuo
shawnps
theory
jboverfelt
dsymonds
cd1
wallclockbuilder
dansouza

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Copyright (c) 2009,2014 Google Inc. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

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# uuid
The uuid package generates and inspects UUIDs based on
[RFC 4122](https://datatracker.ietf.org/doc/html/rfc4122)
and DCE 1.1: Authentication and Security Services.
This package is based on the github.com/pborman/uuid package (previously named
code.google.com/p/go-uuid). It differs from these earlier packages in that
a UUID is a 16 byte array rather than a byte slice. One loss due to this
change is the ability to represent an invalid UUID (vs a NIL UUID).
###### Install
```sh
go get github.com/google/uuid
```
###### Documentation
[![Go Reference](https://pkg.go.dev/badge/github.com/google/uuid.svg)](https://pkg.go.dev/github.com/google/uuid)
Full `go doc` style documentation for the package can be viewed online without
installing this package by using the GoDoc site here:
http://pkg.go.dev/github.com/google/uuid

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// Copyright 2016 Google Inc. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package uuid
import (
"encoding/binary"
"fmt"
"os"
)
// A Domain represents a Version 2 domain
type Domain byte
// Domain constants for DCE Security (Version 2) UUIDs.
const (
Person = Domain(0)
Group = Domain(1)
Org = Domain(2)
)
// NewDCESecurity returns a DCE Security (Version 2) UUID.
//
// The domain should be one of Person, Group or Org.
// On a POSIX system the id should be the users UID for the Person
// domain and the users GID for the Group. The meaning of id for
// the domain Org or on non-POSIX systems is site defined.
//
// For a given domain/id pair the same token may be returned for up to
// 7 minutes and 10 seconds.
func NewDCESecurity(domain Domain, id uint32) (UUID, error) {
uuid, err := NewUUID()
if err == nil {
uuid[6] = (uuid[6] & 0x0f) | 0x20 // Version 2
uuid[9] = byte(domain)
binary.BigEndian.PutUint32(uuid[0:], id)
}
return uuid, err
}
// NewDCEPerson returns a DCE Security (Version 2) UUID in the person
// domain with the id returned by os.Getuid.
//
// NewDCESecurity(Person, uint32(os.Getuid()))
func NewDCEPerson() (UUID, error) {
return NewDCESecurity(Person, uint32(os.Getuid()))
}
// NewDCEGroup returns a DCE Security (Version 2) UUID in the group
// domain with the id returned by os.Getgid.
//
// NewDCESecurity(Group, uint32(os.Getgid()))
func NewDCEGroup() (UUID, error) {
return NewDCESecurity(Group, uint32(os.Getgid()))
}
// Domain returns the domain for a Version 2 UUID. Domains are only defined
// for Version 2 UUIDs.
func (uuid UUID) Domain() Domain {
return Domain(uuid[9])
}
// ID returns the id for a Version 2 UUID. IDs are only defined for Version 2
// UUIDs.
func (uuid UUID) ID() uint32 {
return binary.BigEndian.Uint32(uuid[0:4])
}
func (d Domain) String() string {
switch d {
case Person:
return "Person"
case Group:
return "Group"
case Org:
return "Org"
}
return fmt.Sprintf("Domain%d", int(d))
}

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// Copyright 2016 Google Inc. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// Package uuid generates and inspects UUIDs.
//
// UUIDs are based on RFC 4122 and DCE 1.1: Authentication and Security
// Services.
//
// A UUID is a 16 byte (128 bit) array. UUIDs may be used as keys to
// maps or compared directly.
package uuid

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// Copyright 2016 Google Inc. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package uuid
import (
"crypto/md5"
"crypto/sha1"
"hash"
)
// Well known namespace IDs and UUIDs
var (
NameSpaceDNS = Must(Parse("6ba7b810-9dad-11d1-80b4-00c04fd430c8"))
NameSpaceURL = Must(Parse("6ba7b811-9dad-11d1-80b4-00c04fd430c8"))
NameSpaceOID = Must(Parse("6ba7b812-9dad-11d1-80b4-00c04fd430c8"))
NameSpaceX500 = Must(Parse("6ba7b814-9dad-11d1-80b4-00c04fd430c8"))
Nil UUID // empty UUID, all zeros
// The Max UUID is special form of UUID that is specified to have all 128 bits set to 1.
Max = UUID{
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
}
)
// NewHash returns a new UUID derived from the hash of space concatenated with
// data generated by h. The hash should be at least 16 byte in length. The
// first 16 bytes of the hash are used to form the UUID. The version of the
// UUID will be the lower 4 bits of version. NewHash is used to implement
// NewMD5 and NewSHA1.
func NewHash(h hash.Hash, space UUID, data []byte, version int) UUID {
h.Reset()
h.Write(space[:]) //nolint:errcheck
h.Write(data) //nolint:errcheck
s := h.Sum(nil)
var uuid UUID
copy(uuid[:], s)
uuid[6] = (uuid[6] & 0x0f) | uint8((version&0xf)<<4)
uuid[8] = (uuid[8] & 0x3f) | 0x80 // RFC 4122 variant
return uuid
}
// NewMD5 returns a new MD5 (Version 3) UUID based on the
// supplied name space and data. It is the same as calling:
//
// NewHash(md5.New(), space, data, 3)
func NewMD5(space UUID, data []byte) UUID {
return NewHash(md5.New(), space, data, 3)
}
// NewSHA1 returns a new SHA1 (Version 5) UUID based on the
// supplied name space and data. It is the same as calling:
//
// NewHash(sha1.New(), space, data, 5)
func NewSHA1(space UUID, data []byte) UUID {
return NewHash(sha1.New(), space, data, 5)
}

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// Copyright 2016 Google Inc. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package uuid
import "fmt"
// MarshalText implements encoding.TextMarshaler.
func (uuid UUID) MarshalText() ([]byte, error) {
var js [36]byte
encodeHex(js[:], uuid)
return js[:], nil
}
// UnmarshalText implements encoding.TextUnmarshaler.
func (uuid *UUID) UnmarshalText(data []byte) error {
id, err := ParseBytes(data)
if err != nil {
return err
}
*uuid = id
return nil
}
// MarshalBinary implements encoding.BinaryMarshaler.
func (uuid UUID) MarshalBinary() ([]byte, error) {
return uuid[:], nil
}
// UnmarshalBinary implements encoding.BinaryUnmarshaler.
func (uuid *UUID) UnmarshalBinary(data []byte) error {
if len(data) != 16 {
return fmt.Errorf("invalid UUID (got %d bytes)", len(data))
}
copy(uuid[:], data)
return nil
}

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// Copyright 2016 Google Inc. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package uuid
import (
"sync"
)
var (
nodeMu sync.Mutex
ifname string // name of interface being used
nodeID [6]byte // hardware for version 1 UUIDs
zeroID [6]byte // nodeID with only 0's
)
// NodeInterface returns the name of the interface from which the NodeID was
// derived. The interface "user" is returned if the NodeID was set by
// SetNodeID.
func NodeInterface() string {
defer nodeMu.Unlock()
nodeMu.Lock()
return ifname
}
// SetNodeInterface selects the hardware address to be used for Version 1 UUIDs.
// If name is "" then the first usable interface found will be used or a random
// Node ID will be generated. If a named interface cannot be found then false
// is returned.
//
// SetNodeInterface never fails when name is "".
func SetNodeInterface(name string) bool {
defer nodeMu.Unlock()
nodeMu.Lock()
return setNodeInterface(name)
}
func setNodeInterface(name string) bool {
iname, addr := getHardwareInterface(name) // null implementation for js
if iname != "" && addr != nil {
ifname = iname
copy(nodeID[:], addr)
return true
}
// We found no interfaces with a valid hardware address. If name
// does not specify a specific interface generate a random Node ID
// (section 4.1.6)
if name == "" {
ifname = "random"
randomBits(nodeID[:])
return true
}
return false
}
// NodeID returns a slice of a copy of the current Node ID, setting the Node ID
// if not already set.
func NodeID() []byte {
defer nodeMu.Unlock()
nodeMu.Lock()
if nodeID == zeroID {
setNodeInterface("")
}
nid := nodeID
return nid[:]
}
// SetNodeID sets the Node ID to be used for Version 1 UUIDs. The first 6 bytes
// of id are used. If id is less than 6 bytes then false is returned and the
// Node ID is not set.
func SetNodeID(id []byte) bool {
if len(id) < 6 {
return false
}
defer nodeMu.Unlock()
nodeMu.Lock()
copy(nodeID[:], id)
ifname = "user"
return true
}
// NodeID returns the 6 byte node id encoded in uuid. It returns nil if uuid is
// not valid. The NodeID is only well defined for version 1 and 2 UUIDs.
func (uuid UUID) NodeID() []byte {
var node [6]byte
copy(node[:], uuid[10:])
return node[:]
}

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// Copyright 2017 Google Inc. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build js
package uuid
// getHardwareInterface returns nil values for the JS version of the code.
// This removes the "net" dependency, because it is not used in the browser.
// Using the "net" library inflates the size of the transpiled JS code by 673k bytes.
func getHardwareInterface(name string) (string, []byte) { return "", nil }

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// Copyright 2017 Google Inc. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build !js
package uuid
import "net"
var interfaces []net.Interface // cached list of interfaces
// getHardwareInterface returns the name and hardware address of interface name.
// If name is "" then the name and hardware address of one of the system's
// interfaces is returned. If no interfaces are found (name does not exist or
// there are no interfaces) then "", nil is returned.
//
// Only addresses of at least 6 bytes are returned.
func getHardwareInterface(name string) (string, []byte) {
if interfaces == nil {
var err error
interfaces, err = net.Interfaces()
if err != nil {
return "", nil
}
}
for _, ifs := range interfaces {
if len(ifs.HardwareAddr) >= 6 && (name == "" || name == ifs.Name) {
return ifs.Name, ifs.HardwareAddr
}
}
return "", nil
}

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// Copyright 2021 Google Inc. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package uuid
import (
"bytes"
"database/sql/driver"
"encoding/json"
"fmt"
)
var jsonNull = []byte("null")
// NullUUID represents a UUID that may be null.
// NullUUID implements the SQL driver.Scanner interface so
// it can be used as a scan destination:
//
// var u uuid.NullUUID
// err := db.QueryRow("SELECT name FROM foo WHERE id=?", id).Scan(&u)
// ...
// if u.Valid {
// // use u.UUID
// } else {
// // NULL value
// }
//
type NullUUID struct {
UUID UUID
Valid bool // Valid is true if UUID is not NULL
}
// Scan implements the SQL driver.Scanner interface.
func (nu *NullUUID) Scan(value interface{}) error {
if value == nil {
nu.UUID, nu.Valid = Nil, false
return nil
}
err := nu.UUID.Scan(value)
if err != nil {
nu.Valid = false
return err
}
nu.Valid = true
return nil
}
// Value implements the driver Valuer interface.
func (nu NullUUID) Value() (driver.Value, error) {
if !nu.Valid {
return nil, nil
}
// Delegate to UUID Value function
return nu.UUID.Value()
}
// MarshalBinary implements encoding.BinaryMarshaler.
func (nu NullUUID) MarshalBinary() ([]byte, error) {
if nu.Valid {
return nu.UUID[:], nil
}
return []byte(nil), nil
}
// UnmarshalBinary implements encoding.BinaryUnmarshaler.
func (nu *NullUUID) UnmarshalBinary(data []byte) error {
if len(data) != 16 {
return fmt.Errorf("invalid UUID (got %d bytes)", len(data))
}
copy(nu.UUID[:], data)
nu.Valid = true
return nil
}
// MarshalText implements encoding.TextMarshaler.
func (nu NullUUID) MarshalText() ([]byte, error) {
if nu.Valid {
return nu.UUID.MarshalText()
}
return jsonNull, nil
}
// UnmarshalText implements encoding.TextUnmarshaler.
func (nu *NullUUID) UnmarshalText(data []byte) error {
id, err := ParseBytes(data)
if err != nil {
nu.Valid = false
return err
}
nu.UUID = id
nu.Valid = true
return nil
}
// MarshalJSON implements json.Marshaler.
func (nu NullUUID) MarshalJSON() ([]byte, error) {
if nu.Valid {
return json.Marshal(nu.UUID)
}
return jsonNull, nil
}
// UnmarshalJSON implements json.Unmarshaler.
func (nu *NullUUID) UnmarshalJSON(data []byte) error {
if bytes.Equal(data, jsonNull) {
*nu = NullUUID{}
return nil // valid null UUID
}
err := json.Unmarshal(data, &nu.UUID)
nu.Valid = err == nil
return err
}

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// Copyright 2016 Google Inc. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package uuid
import (
"database/sql/driver"
"fmt"
)
// Scan implements sql.Scanner so UUIDs can be read from databases transparently.
// Currently, database types that map to string and []byte are supported. Please
// consult database-specific driver documentation for matching types.
func (uuid *UUID) Scan(src interface{}) error {
switch src := src.(type) {
case nil:
return nil
case string:
// if an empty UUID comes from a table, we return a null UUID
if src == "" {
return nil
}
// see Parse for required string format
u, err := Parse(src)
if err != nil {
return fmt.Errorf("Scan: %v", err)
}
*uuid = u
case []byte:
// if an empty UUID comes from a table, we return a null UUID
if len(src) == 0 {
return nil
}
// assumes a simple slice of bytes if 16 bytes
// otherwise attempts to parse
if len(src) != 16 {
return uuid.Scan(string(src))
}
copy((*uuid)[:], src)
default:
return fmt.Errorf("Scan: unable to scan type %T into UUID", src)
}
return nil
}
// Value implements sql.Valuer so that UUIDs can be written to databases
// transparently. Currently, UUIDs map to strings. Please consult
// database-specific driver documentation for matching types.
func (uuid UUID) Value() (driver.Value, error) {
return uuid.String(), nil
}

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// Copyright 2016 Google Inc. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package uuid
import (
"encoding/binary"
"sync"
"time"
)
// A Time represents a time as the number of 100's of nanoseconds since 15 Oct
// 1582.
type Time int64
const (
lillian = 2299160 // Julian day of 15 Oct 1582
unix = 2440587 // Julian day of 1 Jan 1970
epoch = unix - lillian // Days between epochs
g1582 = epoch * 86400 // seconds between epochs
g1582ns100 = g1582 * 10000000 // 100s of a nanoseconds between epochs
)
var (
timeMu sync.Mutex
lasttime uint64 // last time we returned
clockSeq uint16 // clock sequence for this run
timeNow = time.Now // for testing
)
// UnixTime converts t the number of seconds and nanoseconds using the Unix
// epoch of 1 Jan 1970.
func (t Time) UnixTime() (sec, nsec int64) {
sec = int64(t - g1582ns100)
nsec = (sec % 10000000) * 100
sec /= 10000000
return sec, nsec
}
// GetTime returns the current Time (100s of nanoseconds since 15 Oct 1582) and
// clock sequence as well as adjusting the clock sequence as needed. An error
// is returned if the current time cannot be determined.
func GetTime() (Time, uint16, error) {
defer timeMu.Unlock()
timeMu.Lock()
return getTime()
}
func getTime() (Time, uint16, error) {
t := timeNow()
// If we don't have a clock sequence already, set one.
if clockSeq == 0 {
setClockSequence(-1)
}
now := uint64(t.UnixNano()/100) + g1582ns100
// If time has gone backwards with this clock sequence then we
// increment the clock sequence
if now <= lasttime {
clockSeq = ((clockSeq + 1) & 0x3fff) | 0x8000
}
lasttime = now
return Time(now), clockSeq, nil
}
// ClockSequence returns the current clock sequence, generating one if not
// already set. The clock sequence is only used for Version 1 UUIDs.
//
// The uuid package does not use global static storage for the clock sequence or
// the last time a UUID was generated. Unless SetClockSequence is used, a new
// random clock sequence is generated the first time a clock sequence is
// requested by ClockSequence, GetTime, or NewUUID. (section 4.2.1.1)
func ClockSequence() int {
defer timeMu.Unlock()
timeMu.Lock()
return clockSequence()
}
func clockSequence() int {
if clockSeq == 0 {
setClockSequence(-1)
}
return int(clockSeq & 0x3fff)
}
// SetClockSequence sets the clock sequence to the lower 14 bits of seq. Setting to
// -1 causes a new sequence to be generated.
func SetClockSequence(seq int) {
defer timeMu.Unlock()
timeMu.Lock()
setClockSequence(seq)
}
func setClockSequence(seq int) {
if seq == -1 {
var b [2]byte
randomBits(b[:]) // clock sequence
seq = int(b[0])<<8 | int(b[1])
}
oldSeq := clockSeq
clockSeq = uint16(seq&0x3fff) | 0x8000 // Set our variant
if oldSeq != clockSeq {
lasttime = 0
}
}
// Time returns the time in 100s of nanoseconds since 15 Oct 1582 encoded in
// uuid. The time is only defined for version 1, 2, 6 and 7 UUIDs.
func (uuid UUID) Time() Time {
var t Time
switch uuid.Version() {
case 6:
time := binary.BigEndian.Uint64(uuid[:8]) // Ignore uuid[6] version b0110
t = Time(time)
case 7:
time := binary.BigEndian.Uint64(uuid[:8])
t = Time((time>>16)*10000 + g1582ns100)
default: // forward compatible
time := int64(binary.BigEndian.Uint32(uuid[0:4]))
time |= int64(binary.BigEndian.Uint16(uuid[4:6])) << 32
time |= int64(binary.BigEndian.Uint16(uuid[6:8])&0xfff) << 48
t = Time(time)
}
return t
}
// ClockSequence returns the clock sequence encoded in uuid.
// The clock sequence is only well defined for version 1 and 2 UUIDs.
func (uuid UUID) ClockSequence() int {
return int(binary.BigEndian.Uint16(uuid[8:10])) & 0x3fff
}

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// Copyright 2016 Google Inc. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package uuid
import (
"io"
)
// randomBits completely fills slice b with random data.
func randomBits(b []byte) {
if _, err := io.ReadFull(rander, b); err != nil {
panic(err.Error()) // rand should never fail
}
}
// xvalues returns the value of a byte as a hexadecimal digit or 255.
var xvalues = [256]byte{
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 255, 255, 255, 255, 255, 255,
255, 10, 11, 12, 13, 14, 15, 255, 255, 255, 255, 255, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
255, 10, 11, 12, 13, 14, 15, 255, 255, 255, 255, 255, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255, 255,
}
// xtob converts hex characters x1 and x2 into a byte.
func xtob(x1, x2 byte) (byte, bool) {
b1 := xvalues[x1]
b2 := xvalues[x2]
return (b1 << 4) | b2, b1 != 255 && b2 != 255
}

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// Copyright 2018 Google Inc. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package uuid
import (
"bytes"
"crypto/rand"
"encoding/hex"
"errors"
"fmt"
"io"
"strings"
"sync"
)
// A UUID is a 128 bit (16 byte) Universal Unique IDentifier as defined in RFC
// 4122.
type UUID [16]byte
// A Version represents a UUID's version.
type Version byte
// A Variant represents a UUID's variant.
type Variant byte
// Constants returned by Variant.
const (
Invalid = Variant(iota) // Invalid UUID
RFC4122 // The variant specified in RFC4122
Reserved // Reserved, NCS backward compatibility.
Microsoft // Reserved, Microsoft Corporation backward compatibility.
Future // Reserved for future definition.
)
const randPoolSize = 16 * 16
var (
rander = rand.Reader // random function
poolEnabled = false
poolMu sync.Mutex
poolPos = randPoolSize // protected with poolMu
pool [randPoolSize]byte // protected with poolMu
)
type invalidLengthError struct{ len int }
func (err invalidLengthError) Error() string {
return fmt.Sprintf("invalid UUID length: %d", err.len)
}
// IsInvalidLengthError is matcher function for custom error invalidLengthError
func IsInvalidLengthError(err error) bool {
_, ok := err.(invalidLengthError)
return ok
}
// Parse decodes s into a UUID or returns an error if it cannot be parsed. Both
// the standard UUID forms defined in RFC 4122
// (xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx and
// urn:uuid:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx) are decoded. In addition,
// Parse accepts non-standard strings such as the raw hex encoding
// xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx and 38 byte "Microsoft style" encodings,
// e.g. {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}. Only the middle 36 bytes are
// examined in the latter case. Parse should not be used to validate strings as
// it parses non-standard encodings as indicated above.
func Parse(s string) (UUID, error) {
var uuid UUID
switch len(s) {
// xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
case 36:
// urn:uuid:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
case 36 + 9:
if !strings.EqualFold(s[:9], "urn:uuid:") {
return uuid, fmt.Errorf("invalid urn prefix: %q", s[:9])
}
s = s[9:]
// {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}
case 36 + 2:
s = s[1:]
// xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
case 32:
var ok bool
for i := range uuid {
uuid[i], ok = xtob(s[i*2], s[i*2+1])
if !ok {
return uuid, errors.New("invalid UUID format")
}
}
return uuid, nil
default:
return uuid, invalidLengthError{len(s)}
}
// s is now at least 36 bytes long
// it must be of the form xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
if s[8] != '-' || s[13] != '-' || s[18] != '-' || s[23] != '-' {
return uuid, errors.New("invalid UUID format")
}
for i, x := range [16]int{
0, 2, 4, 6,
9, 11,
14, 16,
19, 21,
24, 26, 28, 30, 32, 34,
} {
v, ok := xtob(s[x], s[x+1])
if !ok {
return uuid, errors.New("invalid UUID format")
}
uuid[i] = v
}
return uuid, nil
}
// ParseBytes is like Parse, except it parses a byte slice instead of a string.
func ParseBytes(b []byte) (UUID, error) {
var uuid UUID
switch len(b) {
case 36: // xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
case 36 + 9: // urn:uuid:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
if !bytes.EqualFold(b[:9], []byte("urn:uuid:")) {
return uuid, fmt.Errorf("invalid urn prefix: %q", b[:9])
}
b = b[9:]
case 36 + 2: // {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}
b = b[1:]
case 32: // xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
var ok bool
for i := 0; i < 32; i += 2 {
uuid[i/2], ok = xtob(b[i], b[i+1])
if !ok {
return uuid, errors.New("invalid UUID format")
}
}
return uuid, nil
default:
return uuid, invalidLengthError{len(b)}
}
// s is now at least 36 bytes long
// it must be of the form xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
if b[8] != '-' || b[13] != '-' || b[18] != '-' || b[23] != '-' {
return uuid, errors.New("invalid UUID format")
}
for i, x := range [16]int{
0, 2, 4, 6,
9, 11,
14, 16,
19, 21,
24, 26, 28, 30, 32, 34,
} {
v, ok := xtob(b[x], b[x+1])
if !ok {
return uuid, errors.New("invalid UUID format")
}
uuid[i] = v
}
return uuid, nil
}
// MustParse is like Parse but panics if the string cannot be parsed.
// It simplifies safe initialization of global variables holding compiled UUIDs.
func MustParse(s string) UUID {
uuid, err := Parse(s)
if err != nil {
panic(`uuid: Parse(` + s + `): ` + err.Error())
}
return uuid
}
// FromBytes creates a new UUID from a byte slice. Returns an error if the slice
// does not have a length of 16. The bytes are copied from the slice.
func FromBytes(b []byte) (uuid UUID, err error) {
err = uuid.UnmarshalBinary(b)
return uuid, err
}
// Must returns uuid if err is nil and panics otherwise.
func Must(uuid UUID, err error) UUID {
if err != nil {
panic(err)
}
return uuid
}
// Validate returns an error if s is not a properly formatted UUID in one of the following formats:
// xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
// urn:uuid:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
// xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
// {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}
// It returns an error if the format is invalid, otherwise nil.
func Validate(s string) error {
switch len(s) {
// Standard UUID format
case 36:
// UUID with "urn:uuid:" prefix
case 36 + 9:
if !strings.EqualFold(s[:9], "urn:uuid:") {
return fmt.Errorf("invalid urn prefix: %q", s[:9])
}
s = s[9:]
// UUID enclosed in braces
case 36 + 2:
if s[0] != '{' || s[len(s)-1] != '}' {
return fmt.Errorf("invalid bracketed UUID format")
}
s = s[1 : len(s)-1]
// UUID without hyphens
case 32:
for i := 0; i < len(s); i += 2 {
_, ok := xtob(s[i], s[i+1])
if !ok {
return errors.New("invalid UUID format")
}
}
default:
return invalidLengthError{len(s)}
}
// Check for standard UUID format
if len(s) == 36 {
if s[8] != '-' || s[13] != '-' || s[18] != '-' || s[23] != '-' {
return errors.New("invalid UUID format")
}
for _, x := range []int{0, 2, 4, 6, 9, 11, 14, 16, 19, 21, 24, 26, 28, 30, 32, 34} {
if _, ok := xtob(s[x], s[x+1]); !ok {
return errors.New("invalid UUID format")
}
}
}
return nil
}
// String returns the string form of uuid, xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx
// , or "" if uuid is invalid.
func (uuid UUID) String() string {
var buf [36]byte
encodeHex(buf[:], uuid)
return string(buf[:])
}
// URN returns the RFC 2141 URN form of uuid,
// urn:uuid:xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx, or "" if uuid is invalid.
func (uuid UUID) URN() string {
var buf [36 + 9]byte
copy(buf[:], "urn:uuid:")
encodeHex(buf[9:], uuid)
return string(buf[:])
}
func encodeHex(dst []byte, uuid UUID) {
hex.Encode(dst, uuid[:4])
dst[8] = '-'
hex.Encode(dst[9:13], uuid[4:6])
dst[13] = '-'
hex.Encode(dst[14:18], uuid[6:8])
dst[18] = '-'
hex.Encode(dst[19:23], uuid[8:10])
dst[23] = '-'
hex.Encode(dst[24:], uuid[10:])
}
// Variant returns the variant encoded in uuid.
func (uuid UUID) Variant() Variant {
switch {
case (uuid[8] & 0xc0) == 0x80:
return RFC4122
case (uuid[8] & 0xe0) == 0xc0:
return Microsoft
case (uuid[8] & 0xe0) == 0xe0:
return Future
default:
return Reserved
}
}
// Version returns the version of uuid.
func (uuid UUID) Version() Version {
return Version(uuid[6] >> 4)
}
func (v Version) String() string {
if v > 15 {
return fmt.Sprintf("BAD_VERSION_%d", v)
}
return fmt.Sprintf("VERSION_%d", v)
}
func (v Variant) String() string {
switch v {
case RFC4122:
return "RFC4122"
case Reserved:
return "Reserved"
case Microsoft:
return "Microsoft"
case Future:
return "Future"
case Invalid:
return "Invalid"
}
return fmt.Sprintf("BadVariant%d", int(v))
}
// SetRand sets the random number generator to r, which implements io.Reader.
// If r.Read returns an error when the package requests random data then
// a panic will be issued.
//
// Calling SetRand with nil sets the random number generator to the default
// generator.
func SetRand(r io.Reader) {
if r == nil {
rander = rand.Reader
return
}
rander = r
}
// EnableRandPool enables internal randomness pool used for Random
// (Version 4) UUID generation. The pool contains random bytes read from
// the random number generator on demand in batches. Enabling the pool
// may improve the UUID generation throughput significantly.
//
// Since the pool is stored on the Go heap, this feature may be a bad fit
// for security sensitive applications.
//
// Both EnableRandPool and DisableRandPool are not thread-safe and should
// only be called when there is no possibility that New or any other
// UUID Version 4 generation function will be called concurrently.
func EnableRandPool() {
poolEnabled = true
}
// DisableRandPool disables the randomness pool if it was previously
// enabled with EnableRandPool.
//
// Both EnableRandPool and DisableRandPool are not thread-safe and should
// only be called when there is no possibility that New or any other
// UUID Version 4 generation function will be called concurrently.
func DisableRandPool() {
poolEnabled = false
defer poolMu.Unlock()
poolMu.Lock()
poolPos = randPoolSize
}
// UUIDs is a slice of UUID types.
type UUIDs []UUID
// Strings returns a string slice containing the string form of each UUID in uuids.
func (uuids UUIDs) Strings() []string {
var uuidStrs = make([]string, len(uuids))
for i, uuid := range uuids {
uuidStrs[i] = uuid.String()
}
return uuidStrs
}

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// Copyright 2016 Google Inc. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package uuid
import (
"encoding/binary"
)
// NewUUID returns a Version 1 UUID based on the current NodeID and clock
// sequence, and the current time. If the NodeID has not been set by SetNodeID
// or SetNodeInterface then it will be set automatically. If the NodeID cannot
// be set NewUUID returns nil. If clock sequence has not been set by
// SetClockSequence then it will be set automatically. If GetTime fails to
// return the current NewUUID returns nil and an error.
//
// In most cases, New should be used.
func NewUUID() (UUID, error) {
var uuid UUID
now, seq, err := GetTime()
if err != nil {
return uuid, err
}
timeLow := uint32(now & 0xffffffff)
timeMid := uint16((now >> 32) & 0xffff)
timeHi := uint16((now >> 48) & 0x0fff)
timeHi |= 0x1000 // Version 1
binary.BigEndian.PutUint32(uuid[0:], timeLow)
binary.BigEndian.PutUint16(uuid[4:], timeMid)
binary.BigEndian.PutUint16(uuid[6:], timeHi)
binary.BigEndian.PutUint16(uuid[8:], seq)
nodeMu.Lock()
if nodeID == zeroID {
setNodeInterface("")
}
copy(uuid[10:], nodeID[:])
nodeMu.Unlock()
return uuid, nil
}

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// Copyright 2016 Google Inc. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package uuid
import "io"
// New creates a new random UUID or panics. New is equivalent to
// the expression
//
// uuid.Must(uuid.NewRandom())
func New() UUID {
return Must(NewRandom())
}
// NewString creates a new random UUID and returns it as a string or panics.
// NewString is equivalent to the expression
//
// uuid.New().String()
func NewString() string {
return Must(NewRandom()).String()
}
// NewRandom returns a Random (Version 4) UUID.
//
// The strength of the UUIDs is based on the strength of the crypto/rand
// package.
//
// Uses the randomness pool if it was enabled with EnableRandPool.
//
// A note about uniqueness derived from the UUID Wikipedia entry:
//
// Randomly generated UUIDs have 122 random bits. One's annual risk of being
// hit by a meteorite is estimated to be one chance in 17 billion, that
// means the probability is about 0.00000000006 (6 × 10−11),
// equivalent to the odds of creating a few tens of trillions of UUIDs in a
// year and having one duplicate.
func NewRandom() (UUID, error) {
if !poolEnabled {
return NewRandomFromReader(rander)
}
return newRandomFromPool()
}
// NewRandomFromReader returns a UUID based on bytes read from a given io.Reader.
func NewRandomFromReader(r io.Reader) (UUID, error) {
var uuid UUID
_, err := io.ReadFull(r, uuid[:])
if err != nil {
return Nil, err
}
uuid[6] = (uuid[6] & 0x0f) | 0x40 // Version 4
uuid[8] = (uuid[8] & 0x3f) | 0x80 // Variant is 10
return uuid, nil
}
func newRandomFromPool() (UUID, error) {
var uuid UUID
poolMu.Lock()
if poolPos == randPoolSize {
_, err := io.ReadFull(rander, pool[:])
if err != nil {
poolMu.Unlock()
return Nil, err
}
poolPos = 0
}
copy(uuid[:], pool[poolPos:(poolPos+16)])
poolPos += 16
poolMu.Unlock()
uuid[6] = (uuid[6] & 0x0f) | 0x40 // Version 4
uuid[8] = (uuid[8] & 0x3f) | 0x80 // Variant is 10
return uuid, nil
}

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// Copyright 2023 Google Inc. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package uuid
import "encoding/binary"
// UUID version 6 is a field-compatible version of UUIDv1, reordered for improved DB locality.
// It is expected that UUIDv6 will primarily be used in contexts where there are existing v1 UUIDs.
// Systems that do not involve legacy UUIDv1 SHOULD consider using UUIDv7 instead.
//
// see https://datatracker.ietf.org/doc/html/draft-peabody-dispatch-new-uuid-format-03#uuidv6
//
// NewV6 returns a Version 6 UUID based on the current NodeID and clock
// sequence, and the current time. If the NodeID has not been set by SetNodeID
// or SetNodeInterface then it will be set automatically. If the NodeID cannot
// be set NewV6 set NodeID is random bits automatically . If clock sequence has not been set by
// SetClockSequence then it will be set automatically. If GetTime fails to
// return the current NewV6 returns Nil and an error.
func NewV6() (UUID, error) {
var uuid UUID
now, seq, err := GetTime()
if err != nil {
return uuid, err
}
/*
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| time_high |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| time_mid | time_low_and_version |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|clk_seq_hi_res | clk_seq_low | node (0-1) |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| node (2-5) |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
binary.BigEndian.PutUint64(uuid[0:], uint64(now))
binary.BigEndian.PutUint16(uuid[8:], seq)
uuid[6] = 0x60 | (uuid[6] & 0x0F)
uuid[8] = 0x80 | (uuid[8] & 0x3F)
nodeMu.Lock()
if nodeID == zeroID {
setNodeInterface("")
}
copy(uuid[10:], nodeID[:])
nodeMu.Unlock()
return uuid, nil
}

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// Copyright 2023 Google Inc. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package uuid
import (
"io"
)
// UUID version 7 features a time-ordered value field derived from the widely
// implemented and well known Unix Epoch timestamp source,
// the number of milliseconds seconds since midnight 1 Jan 1970 UTC, leap seconds excluded.
// As well as improved entropy characteristics over versions 1 or 6.
//
// see https://datatracker.ietf.org/doc/html/draft-peabody-dispatch-new-uuid-format-03#name-uuid-version-7
//
// Implementations SHOULD utilize UUID version 7 over UUID version 1 and 6 if possible.
//
// NewV7 returns a Version 7 UUID based on the current time(Unix Epoch).
// Uses the randomness pool if it was enabled with EnableRandPool.
// On error, NewV7 returns Nil and an error
func NewV7() (UUID, error) {
uuid, err := NewRandom()
if err != nil {
return uuid, err
}
makeV7(uuid[:])
return uuid, nil
}
// NewV7FromReader returns a Version 7 UUID based on the current time(Unix Epoch).
// it use NewRandomFromReader fill random bits.
// On error, NewV7FromReader returns Nil and an error.
func NewV7FromReader(r io.Reader) (UUID, error) {
uuid, err := NewRandomFromReader(r)
if err != nil {
return uuid, err
}
makeV7(uuid[:])
return uuid, nil
}
// makeV7 fill 48 bits time (uuid[0] - uuid[5]), set version b0111 (uuid[6])
// uuid[8] already has the right version number (Variant is 10)
// see function NewV7 and NewV7FromReader
func makeV7(uuid []byte) {
/*
0 1 2 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| unix_ts_ms |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| unix_ts_ms | ver | rand_a (12 bit seq) |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|var| rand_b |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
| rand_b |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
_ = uuid[15] // bounds check
t, s := getV7Time()
uuid[0] = byte(t >> 40)
uuid[1] = byte(t >> 32)
uuid[2] = byte(t >> 24)
uuid[3] = byte(t >> 16)
uuid[4] = byte(t >> 8)
uuid[5] = byte(t)
uuid[6] = 0x70 | (0x0F & byte(s>>8))
uuid[7] = byte(s)
}
// lastV7time is the last time we returned stored as:
//
// 52 bits of time in milliseconds since epoch
// 12 bits of (fractional nanoseconds) >> 8
var lastV7time int64
const nanoPerMilli = 1000000
// getV7Time returns the time in milliseconds and nanoseconds / 256.
// The returned (milli << 12 + seq) is guarenteed to be greater than
// (milli << 12 + seq) returned by any previous call to getV7Time.
func getV7Time() (milli, seq int64) {
timeMu.Lock()
defer timeMu.Unlock()
nano := timeNow().UnixNano()
milli = nano / nanoPerMilli
// Sequence number is between 0 and 3906 (nanoPerMilli>>8)
seq = (nano - milli*nanoPerMilli) >> 8
now := milli<<12 + seq
if now <= lastV7time {
now = lastV7time + 1
milli = now >> 12
seq = now & 0xfff
}
lastV7time = now
return milli, seq
}

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Apache License
Version 2.0, January 2004
http://www.apache.org/licenses/
TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
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"License" shall mean the terms and conditions for use, reproduction,
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5. Submission of Contributions. Unless You explicitly state otherwise,
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this License, without any additional terms or conditions.
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6. Trademarks. This License does not grant permission to use the trade
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7. Disclaimer of Warranty. Unless required by applicable law or
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whether in tort (including negligence), contract, or otherwise,
unless required by applicable law (such as deliberate and grossly
negligent acts) or agreed to in writing, shall any Contributor be
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incidental, or consequential damages of any character arising as a
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Work (including but not limited to damages for loss of goodwill,
work stoppage, computer failure or malfunction, or any and all
other commercial damages or losses), even if such Contributor
has been advised of the possibility of such damages.
9. Accepting Warranty or Additional Liability. While redistributing
the Work or Derivative Works thereof, You may choose to offer,
and charge a fee for, acceptance of support, warranty, indemnity,
or other liability obligations and/or rights consistent with this
License. However, in accepting such obligations, You may act only
on Your own behalf and on Your sole responsibility, not on behalf
of any other Contributor, and only if You agree to indemnify,
defend, and hold each Contributor harmless for any liability
incurred by, or claims asserted against, such Contributor by reason
of your accepting any such warranty or additional liability.
END OF TERMS AND CONDITIONS
APPENDIX: How to apply the Apache License to your work.
To apply the Apache License to your work, attach the following
boilerplate notice, with the fields enclosed by brackets "[]"
replaced with your own identifying information. (Don't include
the brackets!) The text should be enclosed in the appropriate
comment syntax for the file format. We also recommend that a
file or class name and description of purpose be included on the
same "printed page" as the copyright notice for easier
identification within third-party archives.
Copyright 2022 Alan Shreve (@inconshreveable)
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

23
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# mousetrap
mousetrap is a tiny library that answers a single question.
On a Windows machine, was the process invoked by someone double clicking on
the executable file while browsing in explorer?
### Motivation
Windows developers unfamiliar with command line tools will often "double-click"
the executable for a tool. Because most CLI tools print the help and then exit
when invoked without arguments, this is often very frustrating for those users.
mousetrap provides a way to detect these invocations so that you can provide
more helpful behavior and instructions on how to run the CLI tool. To see what
this looks like, both from an organizational and a technical perspective, see
https://inconshreveable.com/09-09-2014/sweat-the-small-stuff/
### The interface
The library exposes a single interface:
func StartedByExplorer() (bool)

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//go:build !windows
// +build !windows
package mousetrap
// StartedByExplorer returns true if the program was invoked by the user
// double-clicking on the executable from explorer.exe
//
// It is conservative and returns false if any of the internal calls fail.
// It does not guarantee that the program was run from a terminal. It only can tell you
// whether it was launched from explorer.exe
//
// On non-Windows platforms, it always returns false.
func StartedByExplorer() bool {
return false
}

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vendor/github.com/inconshreveable/mousetrap/trap_windows.go generated vendored Normal file
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package mousetrap
import (
"syscall"
"unsafe"
)
func getProcessEntry(pid int) (*syscall.ProcessEntry32, error) {
snapshot, err := syscall.CreateToolhelp32Snapshot(syscall.TH32CS_SNAPPROCESS, 0)
if err != nil {
return nil, err
}
defer syscall.CloseHandle(snapshot)
var procEntry syscall.ProcessEntry32
procEntry.Size = uint32(unsafe.Sizeof(procEntry))
if err = syscall.Process32First(snapshot, &procEntry); err != nil {
return nil, err
}
for {
if procEntry.ProcessID == uint32(pid) {
return &procEntry, nil
}
err = syscall.Process32Next(snapshot, &procEntry)
if err != nil {
return nil, err
}
}
}
// StartedByExplorer returns true if the program was invoked by the user double-clicking
// on the executable from explorer.exe
//
// It is conservative and returns false if any of the internal calls fail.
// It does not guarantee that the program was run from a terminal. It only can tell you
// whether it was launched from explorer.exe
func StartedByExplorer() bool {
pe, err := getProcessEntry(syscall.Getppid())
if err != nil {
return false
}
return "explorer.exe" == syscall.UTF16ToString(pe.ExeFile[:])
}

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language: go
go:
- 1.x
- tip
matrix:
allow_failures:
- go: tip

22
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Copyright (c) 2019 Jack Christensen
MIT License
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

8
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[![](https://godoc.org/github.com/jackc/pgpassfile?status.svg)](https://godoc.org/github.com/jackc/pgpassfile)
[![Build Status](https://travis-ci.org/jackc/pgpassfile.svg)](https://travis-ci.org/jackc/pgpassfile)
# pgpassfile
Package pgpassfile is a parser PostgreSQL .pgpass files.
Extracted and rewritten from original implementation in https://github.com/jackc/pgx.

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// Package pgpassfile is a parser PostgreSQL .pgpass files.
package pgpassfile
import (
"bufio"
"io"
"os"
"regexp"
"strings"
)
// Entry represents a line in a PG passfile.
type Entry struct {
Hostname string
Port string
Database string
Username string
Password string
}
// Passfile is the in memory data structure representing a PG passfile.
type Passfile struct {
Entries []*Entry
}
// ReadPassfile reads the file at path and parses it into a Passfile.
func ReadPassfile(path string) (*Passfile, error) {
f, err := os.Open(path)
if err != nil {
return nil, err
}
defer f.Close()
return ParsePassfile(f)
}
// ParsePassfile reads r and parses it into a Passfile.
func ParsePassfile(r io.Reader) (*Passfile, error) {
passfile := &Passfile{}
scanner := bufio.NewScanner(r)
for scanner.Scan() {
entry := parseLine(scanner.Text())
if entry != nil {
passfile.Entries = append(passfile.Entries, entry)
}
}
return passfile, scanner.Err()
}
// Match (not colons or escaped colon or escaped backslash)+. Essentially gives a split on unescaped
// colon.
var colonSplitterRegexp = regexp.MustCompile("(([^:]|(\\:)))+")
// var colonSplitterRegexp = regexp.MustCompile("((?:[^:]|(?:\\:)|(?:\\\\))+)")
// parseLine parses a line into an *Entry. It returns nil on comment lines or any other unparsable
// line.
func parseLine(line string) *Entry {
const (
tmpBackslash = "\r"
tmpColon = "\n"
)
line = strings.TrimSpace(line)
if strings.HasPrefix(line, "#") {
return nil
}
line = strings.Replace(line, `\\`, tmpBackslash, -1)
line = strings.Replace(line, `\:`, tmpColon, -1)
parts := strings.Split(line, ":")
if len(parts) != 5 {
return nil
}
// Unescape escaped colons and backslashes
for i := range parts {
parts[i] = strings.Replace(parts[i], tmpBackslash, `\`, -1)
parts[i] = strings.Replace(parts[i], tmpColon, `:`, -1)
}
return &Entry{
Hostname: parts[0],
Port: parts[1],
Database: parts[2],
Username: parts[3],
Password: parts[4],
}
}
// FindPassword finds the password for the provided hostname, port, database, and username. For a
// Unix domain socket hostname must be set to "localhost". An empty string will be returned if no
// match is found.
//
// See https://www.postgresql.org/docs/current/libpq-pgpass.html for more password file information.
func (pf *Passfile) FindPassword(hostname, port, database, username string) (password string) {
for _, e := range pf.Entries {
if (e.Hostname == "*" || e.Hostname == hostname) &&
(e.Port == "*" || e.Port == port) &&
(e.Database == "*" || e.Database == database) &&
(e.Username == "*" || e.Username == username) {
return e.Password
}
}
return ""
}

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Copyright (c) 2020 Jack Christensen
MIT License
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

7
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[![Go Reference](https://pkg.go.dev/badge/github.com/jackc/pgservicefile.svg)](https://pkg.go.dev/github.com/jackc/pgservicefile)
[![Build Status](https://github.com/jackc/pgservicefile/actions/workflows/ci.yml/badge.svg)](https://github.com/jackc/pgservicefile/actions/workflows/ci.yml)
# pgservicefile
Package pgservicefile is a parser for PostgreSQL service files (e.g. `.pg_service.conf`).

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vendor/github.com/jackc/pgservicefile/pgservicefile.go generated vendored Normal file
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// Package pgservicefile is a parser for PostgreSQL service files (e.g. .pg_service.conf).
package pgservicefile
import (
"bufio"
"errors"
"fmt"
"io"
"os"
"strings"
)
type Service struct {
Name string
Settings map[string]string
}
type Servicefile struct {
Services []*Service
servicesByName map[string]*Service
}
// GetService returns the named service.
func (sf *Servicefile) GetService(name string) (*Service, error) {
service, present := sf.servicesByName[name]
if !present {
return nil, errors.New("not found")
}
return service, nil
}
// ReadServicefile reads the file at path and parses it into a Servicefile.
func ReadServicefile(path string) (*Servicefile, error) {
f, err := os.Open(path)
if err != nil {
return nil, err
}
defer f.Close()
return ParseServicefile(f)
}
// ParseServicefile reads r and parses it into a Servicefile.
func ParseServicefile(r io.Reader) (*Servicefile, error) {
servicefile := &Servicefile{}
var service *Service
scanner := bufio.NewScanner(r)
lineNum := 0
for scanner.Scan() {
lineNum += 1
line := scanner.Text()
line = strings.TrimSpace(line)
if line == "" || strings.HasPrefix(line, "#") {
// ignore comments and empty lines
} else if strings.HasPrefix(line, "[") && strings.HasSuffix(line, "]") {
service = &Service{Name: line[1 : len(line)-1], Settings: make(map[string]string)}
servicefile.Services = append(servicefile.Services, service)
} else if service != nil {
parts := strings.SplitN(line, "=", 2)
if len(parts) != 2 {
return nil, fmt.Errorf("unable to parse line %d", lineNum)
}
key := strings.TrimSpace(parts[0])
value := strings.TrimSpace(parts[1])
service.Settings[key] = value
} else {
return nil, fmt.Errorf("line %d is not in a section", lineNum)
}
}
servicefile.servicesByName = make(map[string]*Service, len(servicefile.Services))
for _, service := range servicefile.Services {
servicefile.servicesByName[service.Name] = service
}
return servicefile, scanner.Err()
}

27
vendor/github.com/jackc/pgx/v5/.gitignore generated vendored Normal file
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# Compiled Object files, Static and Dynamic libs (Shared Objects)
*.o
*.a
*.so
# Folders
_obj
_test
# Architecture specific extensions/prefixes
*.[568vq]
[568vq].out
*.cgo1.go
*.cgo2.c
_cgo_defun.c
_cgo_gotypes.go
_cgo_export.*
_testmain.go
*.exe
.envrc
/.testdb
.DS_Store

21
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# See for configurations: https://golangci-lint.run/usage/configuration/
version: 2
# See: https://golangci-lint.run/usage/formatters/
formatters:
default: none
enable:
- gofmt # https://pkg.go.dev/cmd/gofmt
- gofumpt # https://github.com/mvdan/gofumpt
settings:
gofmt:
simplify: true # Simplify code: gofmt with `-s` option.
gofumpt:
# Module path which contains the source code being formatted.
# Default: ""
module-path: github.com/jackc/pgx/v5 # Should match with module in go.mod
# Choose whether to use the extra rules.
# Default: false
extra-rules: true

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# 5.7.6 (September 8, 2025)
* Use ParseConfigError in pgx.ParseConfig and pgxpool.ParseConfig (Yurasov Ilia)
* Add PrepareConn hook to pgxpool (Jonathan Hall)
* Reduce allocations in QueryContext (Dominique Lefevre)
* Add MarshalJSON and UnmarshalJSON for pgtype.Uint32 (Panos Koutsovasilis)
* Configure ping behavior on pgxpool with ShouldPing (Christian Kiely)
* zeronull int types implement Int64Valuer and Int64Scanner (Li Zeghong)
* Fix panic when receiving terminate connection message during CopyFrom (Michal Drausowski)
* Fix statement cache not being invalidated on error during batch (Muhammadali Nazarov)
# 5.7.5 (May 17, 2025)
* Support sslnegotiation connection option (divyam234)
* Update golang.org/x/crypto to v0.37.0. This placates security scanners that were unable to see that pgx did not use the behavior affected by https://pkg.go.dev/vuln/GO-2025-3487.
* TraceLog now logs Acquire and Release at the debug level (dave sinclair)
* Add support for PGTZ environment variable
* Add support for PGOPTIONS environment variable
* Unpin memory used by Rows quicker
* Remove PlanScan memoization. This resolves a rare issue where scanning could be broken for one type by first scanning another. The problem was in the memoization system and benchmarking revealed that memoization was not providing any meaningful benefit.
# 5.7.4 (March 24, 2025)
* Fix / revert change to scanning JSON `null` (Felix Röhrich)
# 5.7.3 (March 21, 2025)
* Expose EmptyAcquireWaitTime in pgxpool.Stat (vamshiaruru32)
* Improve SQL sanitizer performance (ninedraft)
* Fix Scan confusion with json(b), sql.Scanner, and automatic dereferencing (moukoublen, felix-roehrich)
* Fix Values() for xml type always returning nil instead of []byte
* Add ability to send Flush message in pipeline mode (zenkovev)
* Fix pgtype.Timestamp's JSON behavior to match PostgreSQL (pconstantinou)
* Better error messages when scanning structs (logicbomb)
* Fix handling of error on batch write (bonnefoa)
* Match libpq's connection fallback behavior more closely (felix-roehrich)
* Add MinIdleConns to pgxpool (djahandarie)
# 5.7.2 (December 21, 2024)
* Fix prepared statement already exists on batch prepare failure
* Add commit query to tx options (Lucas Hild)
* Fix pgtype.Timestamp json unmarshal (Shean de Montigny-Desautels)
* Add message body size limits in frontend and backend (zene)
* Add xid8 type
* Ensure planning encodes and scans cannot infinitely recurse
* Implement pgtype.UUID.String() (Konstantin Grachev)
* Switch from ExecParams to Exec in ValidateConnectTargetSessionAttrs functions (Alexander Rumyantsev)
* Update golang.org/x/crypto
* Fix json(b) columns prefer sql.Scanner interface like database/sql (Ludovico Russo)
# 5.7.1 (September 10, 2024)
* Fix data race in tracelog.TraceLog
* Update puddle to v2.2.2. This removes the import of nanotime via linkname.
* Update golang.org/x/crypto and golang.org/x/text
# 5.7.0 (September 7, 2024)
* Add support for sslrootcert=system (Yann Soubeyrand)
* Add LoadTypes to load multiple types in a single SQL query (Nick Farrell)
* Add XMLCodec supports encoding + scanning XML column type like json (nickcruess-soda)
* Add MultiTrace (Stepan Rabotkin)
* Add TraceLogConfig with customizable TimeKey (stringintech)
* pgx.ErrNoRows wraps sql.ErrNoRows to aid in database/sql compatibility with native pgx functions (merlin)
* Support scanning binary formatted uint32 into string / TextScanner (jennifersp)
* Fix interval encoding to allow 0s and avoid extra spaces (Carlos Pérez-Aradros Herce)
* Update pgservicefile - fixes panic when parsing invalid file
* Better error message when reading past end of batch
* Don't print url when url.Parse returns an error (Kevin Biju)
* Fix snake case name normalization collision in RowToStructByName with db tag (nolandseigler)
* Fix: Scan and encode types with underlying types of arrays
# 5.6.0 (May 25, 2024)
* Add StrictNamedArgs (Tomas Zahradnicek)
* Add support for macaddr8 type (Carlos Pérez-Aradros Herce)
* Add SeverityUnlocalized field to PgError / Notice
* Performance optimization of RowToStructByPos/Name (Zach Olstein)
* Allow customizing context canceled behavior for pgconn
* Add ScanLocation to pgtype.Timestamp[tz]Codec
* Add custom data to pgconn.PgConn
* Fix ResultReader.Read() to handle nil values
* Do not encode interval microseconds when they are 0 (Carlos Pérez-Aradros Herce)
* pgconn.SafeToRetry checks for wrapped errors (tjasko)
* Failed connection attempts include all errors
* Optimize LargeObject.Read (Mitar)
* Add tracing for connection acquire and release from pool (ngavinsir)
* Fix encode driver.Valuer not called when nil
* Add support for custom JSON marshal and unmarshal (Mitar)
* Use Go default keepalive for TCP connections (Hans-Joachim Kliemeck)
# 5.5.5 (March 9, 2024)
Use spaces instead of parentheses for SQL sanitization.
This still solves the problem of negative numbers creating a line comment, but this avoids breaking edge cases such as
`set foo to $1` where the substitution is taking place in a location where an arbitrary expression is not allowed.
# 5.5.4 (March 4, 2024)
Fix CVE-2024-27304
SQL injection can occur if an attacker can cause a single query or bind message to exceed 4 GB in size. An integer
overflow in the calculated message size can cause the one large message to be sent as multiple messages under the
attacker's control.
Thanks to Paul Gerste for reporting this issue.
* Fix behavior of CollectRows to return empty slice if Rows are empty (Felix)
* Fix simple protocol encoding of json.RawMessage
* Fix *Pipeline.getResults should close pipeline on error
* Fix panic in TryFindUnderlyingTypeScanPlan (David Kurman)
* Fix deallocation of invalidated cached statements in a transaction
* Handle invalid sslkey file
* Fix scan float4 into sql.Scanner
* Fix pgtype.Bits not making copy of data from read buffer. This would cause the data to be corrupted by future reads.
# 5.5.3 (February 3, 2024)
* Fix: prepared statement already exists
* Improve CopyFrom auto-conversion of text-ish values
* Add ltree type support (Florent Viel)
* Make some properties of Batch and QueuedQuery public (Pavlo Golub)
* Add AppendRows function (Edoardo Spadolini)
* Optimize convert UUID [16]byte to string (Kirill Malikov)
* Fix: LargeObject Read and Write of more than ~1GB at a time (Mitar)
# 5.5.2 (January 13, 2024)
* Allow NamedArgs to start with underscore
* pgproto3: Maximum message body length support (jeremy.spriet)
* Upgrade golang.org/x/crypto to v0.17.0
* Add snake_case support to RowToStructByName (Tikhon Fedulov)
* Fix: update description cache after exec prepare (James Hartig)
* Fix: pipeline checks if it is closed (James Hartig and Ryan Fowler)
* Fix: normalize timeout / context errors during TLS startup (Samuel Stauffer)
* Add OnPgError for easier centralized error handling (James Hartig)
# 5.5.1 (December 9, 2023)
* Add CopyFromFunc helper function. (robford)
* Add PgConn.Deallocate method that uses PostgreSQL protocol Close message.
* pgx uses new PgConn.Deallocate method. This allows deallocating statements to work in a failed transaction. This fixes a case where the prepared statement map could become invalid.
* Fix: Prefer driver.Valuer over json.Marshaler for json fields. (Jacopo)
* Fix: simple protocol SQL sanitizer previously panicked if an invalid $0 placeholder was used. This now returns an error instead. (maksymnevajdev)
* Add pgtype.Numeric.ScanScientific (Eshton Robateau)
# 5.5.0 (November 4, 2023)
* Add CollectExactlyOneRow. (Julien GOTTELAND)
* Add OpenDBFromPool to create *database/sql.DB from *pgxpool.Pool. (Lev Zakharov)
* Prepare can automatically choose statement name based on sql. This makes it easier to explicitly manage prepared statements.
* Statement cache now uses deterministic, stable statement names.
* database/sql prepared statement names are deterministically generated.
* Fix: SendBatch wasn't respecting context cancellation.
* Fix: Timeout error from pipeline is now normalized.
* Fix: database/sql encoding json.RawMessage to []byte.
* CancelRequest: Wait for the cancel request to be acknowledged by the server. This should improve PgBouncer compatibility. (Anton Levakin)
* stdlib: Use Ping instead of CheckConn in ResetSession
* Add json.Marshaler and json.Unmarshaler for Float4, Float8 (Kirill Mironov)
# 5.4.3 (August 5, 2023)
* Fix: QCharArrayOID was defined with the wrong OID (Christoph Engelbert)
* Fix: connect_timeout for sslmode=allow|prefer (smaher-edb)
* Fix: pgxpool: background health check cannot overflow pool
* Fix: Check for nil in defer when sending batch (recover properly from panic)
* Fix: json scan of non-string pointer to pointer
* Fix: zeronull.Timestamptz should use pgtype.Timestamptz
* Fix: NewConnsCount was not correctly counting connections created by Acquire directly. (James Hartig)
* RowTo(AddrOf)StructByPos ignores fields with "-" db tag
* Optimization: improve text format numeric parsing (horpto)
# 5.4.2 (July 11, 2023)
* Fix: RowScanner errors are fatal to Rows
* Fix: Enable failover efforts when pg_hba.conf disallows non-ssl connections (Brandon Kauffman)
* Hstore text codec internal improvements (Evan Jones)
* Fix: Stop timers for background reader when not in use. Fixes memory leak when closing connections (Adrian-Stefan Mares)
* Fix: Stop background reader as soon as possible.
* Add PgConn.SyncConn(). This combined with the above fix makes it safe to directly use the underlying net.Conn.
# 5.4.1 (June 18, 2023)
* Fix: concurrency bug with pgtypeDefaultMap and simple protocol (Lev Zakharov)
* Add TxOptions.BeginQuery to allow overriding the default BEGIN query
# 5.4.0 (June 14, 2023)
* Replace platform specific syscalls for non-blocking IO with more traditional goroutines and deadlines. This returns to the v4 approach with some additional improvements and fixes. This restores the ability to use a pgx.Conn over an ssh.Conn as well as other non-TCP or Unix socket connections. In addition, it is a significantly simpler implementation that is less likely to have cross platform issues.
* Optimization: The default type registrations are now shared among all connections. This saves about 100KB of memory per connection. `pgtype.Type` and `pgtype.Codec` values are now required to be immutable after registration. This was already necessary in most cases but wasn't documented until now. (Lev Zakharov)
* Fix: Ensure pgxpool.Pool.QueryRow.Scan releases connection on panic
* CancelRequest: don't try to read the reply (Nicola Murino)
* Fix: correctly handle bool type aliases (Wichert Akkerman)
* Fix: pgconn.CancelRequest: Fix unix sockets: don't use RemoteAddr()
* Fix: pgx.Conn memory leak with prepared statement caching (Evan Jones)
* Add BeforeClose to pgxpool.Pool (Evan Cordell)
* Fix: various hstore fixes and optimizations (Evan Jones)
* Fix: RowToStructByPos with embedded unexported struct
* Support different bool string representations (Lev Zakharov)
* Fix: error when using BatchResults.Exec on a select that returns an error after some rows.
* Fix: pipelineBatchResults.Exec() not returning error from ResultReader
* Fix: pipeline batch results not closing pipeline when error occurs while reading directly from results instead of using
a callback.
* Fix: scanning a table type into a struct
* Fix: scan array of record to pointer to slice of struct
* Fix: handle null for json (Cemre Mengu)
* Batch Query callback is called even when there is an error
* Add RowTo(AddrOf)StructByNameLax (Audi P. Risa P)
# 5.3.1 (February 27, 2023)
* Fix: Support v4 and v5 stdlib in same program (Tomáš Procházka)
* Fix: sql.Scanner not being used in certain cases
* Add text format jsonpath support
* Fix: fake non-blocking read adaptive wait time
# 5.3.0 (February 11, 2023)
* Fix: json values work with sql.Scanner
* Fixed / improved error messages (Mark Chambers and Yevgeny Pats)
* Fix: support scan into single dimensional arrays
* Fix: MaxConnLifetimeJitter setting actually jitter (Ben Weintraub)
* Fix: driver.Value representation of bytea should be []byte not string
* Fix: better handling of unregistered OIDs
* CopyFrom can use query cache to avoid extra round trip to get OIDs (Alejandro Do Nascimento Mora)
* Fix: encode to json ignoring driver.Valuer
* Support sql.Scanner on renamed base type
* Fix: pgtype.Numeric text encoding of negative numbers (Mark Chambers)
* Fix: connect with multiple hostnames when one can't be resolved
* Upgrade puddle to remove dependency on uber/atomic and fix alignment issue on 32-bit platform
* Fix: scanning json column into **string
* Multiple reductions in memory allocations
* Fake non-blocking read adapts its max wait time
* Improve CopyFrom performance and reduce memory usage
* Fix: encode []any to array
* Fix: LoadType for composite with dropped attributes (Felix Röhrich)
* Support v4 and v5 stdlib in same program
* Fix: text format array decoding with string of "NULL"
* Prefer binary format for arrays
# 5.2.0 (December 5, 2022)
* `tracelog.TraceLog` implements the pgx.PrepareTracer interface. (Vitalii Solodilov)
* Optimize creating begin transaction SQL string (Petr Evdokimov and ksco)
* `Conn.LoadType` supports range and multirange types (Vitalii Solodilov)
* Fix scan `uint` and `uint64` `ScanNumeric`. This resolves a PostgreSQL `numeric` being incorrectly scanned into `uint` and `uint64`.
# 5.1.1 (November 17, 2022)
* Fix simple query sanitizer where query text contains a Unicode replacement character.
* Remove erroneous `name` argument from `DeallocateAll()`. Technically, this is a breaking change, but given that method was only added 5 days ago this change was accepted. (Bodo Kaiser)
# 5.1.0 (November 12, 2022)
* Update puddle to v2.1.2. This resolves a race condition and a deadlock in pgxpool.
* `QueryRewriter.RewriteQuery` now returns an error. Technically, this is a breaking change for any external implementers, but given the minimal likelihood that there are actually any external implementers this change was accepted.
* Expose `GetSSLPassword` support to pgx.
* Fix encode `ErrorResponse` unknown field handling. This would only affect pgproto3 being used directly as a proxy with a non-PostgreSQL server that included additional error fields.
* Fix date text format encoding with 5 digit years.
* Fix date values passed to a `sql.Scanner` as `string` instead of `time.Time`.
* DateCodec.DecodeValue can return `pgtype.InfinityModifier` instead of `string` for infinite values. This now matches the behavior of the timestamp types.
* Add domain type support to `Conn.LoadType()`.
* Add `RowToStructByName` and `RowToAddrOfStructByName`. (Pavlo Golub)
* Add `Conn.DeallocateAll()` to clear all prepared statements including the statement cache. (Bodo Kaiser)
# 5.0.4 (October 24, 2022)
* Fix: CollectOneRow prefers PostgreSQL error over pgx.ErrorNoRows
* Fix: some reflect Kind checks to first check for nil
* Bump golang.org/x/text dependency to placate snyk
* Fix: RowToStructByPos on structs with multiple anonymous sub-structs (Baptiste Fontaine)
* Fix: Exec checks if tx is closed
# 5.0.3 (October 14, 2022)
* Fix `driver.Valuer` handling edge cases that could cause infinite loop or crash
# v5.0.2 (October 8, 2022)
* Fix date encoding in text format to always use 2 digits for month and day
* Prefer driver.Valuer over wrap plans when encoding
* Fix scan to pointer to pointer to renamed type
* Allow scanning NULL even if PG and Go types are incompatible
# v5.0.1 (September 24, 2022)
* Fix 32-bit atomic usage
* Add MarshalJSON for Float8 (yogipristiawan)
* Add `[` and `]` to text encoding of `Lseg`
* Fix sqlScannerWrapper NULL handling
# v5.0.0 (September 17, 2022)
## Merged Packages
`github.com/jackc/pgtype`, `github.com/jackc/pgconn`, and `github.com/jackc/pgproto3` are now included in the main
`github.com/jackc/pgx` repository. Previously there was confusion as to where issues should be reported, additional
release work due to releasing multiple packages, and less clear changelogs.
## pgconn
`CommandTag` is now an opaque type instead of directly exposing an underlying `[]byte`.
The return value `ResultReader.Values()` is no longer safe to retain a reference to after a subsequent call to `NextRow()` or `Close()`.
`Trace()` method adds low level message tracing similar to the `PQtrace` function in `libpq`.
pgconn now uses non-blocking IO. This is a significant internal restructuring, but it should not cause any visible changes on its own. However, it is important in implementing other new features.
`CheckConn()` checks a connection's liveness by doing a non-blocking read. This can be used to detect database restarts or network interruptions without executing a query or a ping.
pgconn now supports pipeline mode.
`*PgConn.ReceiveResults` removed. Use pipeline mode instead.
`Timeout()` no longer considers `context.Canceled` as a timeout error. `context.DeadlineExceeded` still is considered a timeout error.
## pgxpool
`Connect` and `ConnectConfig` have been renamed to `New` and `NewWithConfig` respectively. The `LazyConnect` option has been removed. Pools always lazily connect.
## pgtype
The `pgtype` package has been significantly changed.
### NULL Representation
Previously, types had a `Status` field that could be `Undefined`, `Null`, or `Present`. This has been changed to a
`Valid` `bool` field to harmonize with how `database/sql` represents `NULL` and to make the zero value useable.
Previously, a type that implemented `driver.Valuer` would have the `Value` method called even on a nil pointer. All nils
whether typed or untyped now represent `NULL`.
### Codec and Value Split
Previously, the type system combined decoding and encoding values with the value types. e.g. Type `Int8` both handled
encoding and decoding the PostgreSQL representation and acted as a value object. This caused some difficulties when
there was not an exact 1 to 1 relationship between the Go types and the PostgreSQL types For example, scanning a
PostgreSQL binary `numeric` into a Go `float64` was awkward (see https://github.com/jackc/pgtype/issues/147). This
concepts have been separated. A `Codec` only has responsibility for encoding and decoding values. Value types are
generally defined by implementing an interface that a particular `Codec` understands (e.g. `PointScanner` and
`PointValuer` for the PostgreSQL `point` type).
### Array Types
All array types are now handled by `ArrayCodec` instead of using code generation for each new array type. This also
means that less common array types such as `point[]` are now supported. `Array[T]` supports PostgreSQL multi-dimensional
arrays.
### Composite Types
Composite types must be registered before use. `CompositeFields` may still be used to construct and destruct composite
values, but any type may now implement `CompositeIndexGetter` and `CompositeIndexScanner` to be used as a composite.
### Range Types
Range types are now handled with types `RangeCodec` and `Range[T]`. This allows additional user defined range types to
easily be handled. Multirange types are handled similarly with `MultirangeCodec` and `Multirange[T]`.
### pgxtype
`LoadDataType` moved to `*Conn` as `LoadType`.
### Bytea
The `Bytea` and `GenericBinary` types have been replaced. Use the following instead:
* `[]byte` - For normal usage directly use `[]byte`.
* `DriverBytes` - Uses driver memory only available until next database method call. Avoids a copy and an allocation.
* `PreallocBytes` - Uses preallocated byte slice to avoid an allocation.
* `UndecodedBytes` - Avoids any decoding. Allows working with raw bytes.
### Dropped lib/pq Support
`pgtype` previously supported and was tested against [lib/pq](https://github.com/lib/pq). While it will continue to work
in most cases this is no longer supported.
### database/sql Scan
Previously, most `Scan` implementations would convert `[]byte` to `string` automatically to decode a text value. Now
only `string` is handled. This is to allow the possibility of future binary support in `database/sql` mode by
considering `[]byte` to be binary format and `string` text format. This change should have no effect for any use with
`pgx`. The previous behavior was only necessary for `lib/pq` compatibility.
Added `*Map.SQLScanner` to create a `sql.Scanner` for types such as `[]int32` and `Range[T]` that do not implement
`sql.Scanner` directly.
### Number Type Fields Include Bit size
`Int2`, `Int4`, `Int8`, `Float4`, `Float8`, and `Uint32` fields now include bit size. e.g. `Int` is renamed to `Int64`.
This matches the convention set by `database/sql`. In addition, for comparable types like `pgtype.Int8` and
`sql.NullInt64` the structures are identical. This means they can be directly converted one to another.
### 3rd Party Type Integrations
* Extracted integrations with https://github.com/shopspring/decimal and https://github.com/gofrs/uuid to
https://github.com/jackc/pgx-shopspring-decimal and https://github.com/jackc/pgx-gofrs-uuid respectively. This trims
the pgx dependency tree.
### Other Changes
* `Bit` and `Varbit` are both replaced by the `Bits` type.
* `CID`, `OID`, `OIDValue`, and `XID` are replaced by the `Uint32` type.
* `Hstore` is now defined as `map[string]*string`.
* `JSON` and `JSONB` types removed. Use `[]byte` or `string` directly.
* `QChar` type removed. Use `rune` or `byte` directly.
* `Inet` and `Cidr` types removed. Use `netip.Addr` and `netip.Prefix` directly. These types are more memory efficient than the previous `net.IPNet`.
* `Macaddr` type removed. Use `net.HardwareAddr` directly.
* Renamed `pgtype.ConnInfo` to `pgtype.Map`.
* Renamed `pgtype.DataType` to `pgtype.Type`.
* Renamed `pgtype.None` to `pgtype.Finite`.
* `RegisterType` now accepts a `*Type` instead of `Type`.
* Assorted array helper methods and types made private.
## stdlib
* Removed `AcquireConn` and `ReleaseConn` as that functionality has been built in since Go 1.13.
## Reduced Memory Usage by Reusing Read Buffers
Previously, the connection read buffer would allocate large chunks of memory and never reuse them. This allowed
transferring ownership to anything such as scanned values without incurring an additional allocation and memory copy.
However, this came at the cost of overall increased memory allocation size. But worse it was also possible to pin large
chunks of memory by retaining a reference to a small value that originally came directly from the read buffer. Now
ownership remains with the read buffer and anything needing to retain a value must make a copy.
## Query Execution Modes
Control over automatic prepared statement caching and simple protocol use are now combined into query execution mode.
See documentation for `QueryExecMode`.
## QueryRewriter Interface and NamedArgs
pgx now supports named arguments with the `NamedArgs` type. This is implemented via the new `QueryRewriter` interface which
allows arbitrary rewriting of query SQL and arguments.
## RowScanner Interface
The `RowScanner` interface allows a single argument to Rows.Scan to scan the entire row.
## Rows Result Helpers
* `CollectRows` and `RowTo*` functions simplify collecting results into a slice.
* `CollectOneRow` collects one row using `RowTo*` functions.
* `ForEachRow` simplifies scanning each row and executing code using the scanned values. `ForEachRow` replaces `QueryFunc`.
## Tx Helpers
Rather than every type that implemented `Begin` or `BeginTx` methods also needing to implement `BeginFunc` and
`BeginTxFunc` these methods have been converted to functions that take a db that implements `Begin` or `BeginTx`.
## Improved Batch Query Ergonomics
Previously, the code for building a batch went in one place before the call to `SendBatch`, and the code for reading the
results went in one place after the call to `SendBatch`. This could make it difficult to match up the query and the code
to handle the results. Now `Queue` returns a `QueuedQuery` which has methods `Query`, `QueryRow`, and `Exec` which can
be used to register a callback function that will handle the result. Callback functions are called automatically when
`BatchResults.Close` is called.
## SendBatch Uses Pipeline Mode When Appropriate
Previously, a batch with 10 unique parameterized statements executed 100 times would entail 11 network round trips. 1
for each prepare / describe and 1 for executing them all. Now pipeline mode is used to prepare / describe all statements
in a single network round trip. So it would only take 2 round trips.
## Tracing and Logging
Internal logging support has been replaced with tracing hooks. This allows custom tracing integration with tools like OpenTelemetry. Package tracelog provides an adapter for pgx v4 loggers to act as a tracer.
All integrations with 3rd party loggers have been extracted to separate repositories. This trims the pgx dependency
tree.

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# Contributing
## Discuss Significant Changes
Before you invest a significant amount of time on a change, please create a discussion or issue describing your
proposal. This will help to ensure your proposed change has a reasonable chance of being merged.
## Avoid Dependencies
Adding a dependency is a big deal. While on occasion a new dependency may be accepted, the default answer to any change
that adds a dependency is no.
## Development Environment Setup
pgx tests naturally require a PostgreSQL database. It will connect to the database specified in the `PGX_TEST_DATABASE`
environment variable. The `PGX_TEST_DATABASE` environment variable can either be a URL or key-value pairs. In addition,
the standard `PG*` environment variables will be respected. Consider using [direnv](https://github.com/direnv/direnv) to
simplify environment variable handling.
### Using an Existing PostgreSQL Cluster
If you already have a PostgreSQL development server this is the quickest way to start and run the majority of the pgx
test suite. Some tests will be skipped that require server configuration changes (e.g. those testing different
authentication methods).
Create and setup a test database:
```
export PGDATABASE=pgx_test
createdb
psql -c 'create extension hstore;'
psql -c 'create extension ltree;'
psql -c 'create domain uint64 as numeric(20,0);'
```
Ensure a `postgres` user exists. This happens by default in normal PostgreSQL installs, but some installation methods
such as Homebrew do not.
```
createuser -s postgres
```
Ensure your `PGX_TEST_DATABASE` environment variable points to the database you just created and run the tests.
```
export PGX_TEST_DATABASE="host=/private/tmp database=pgx_test"
go test ./...
```
This will run the vast majority of the tests, but some tests will be skipped (e.g. those testing different connection methods).
### Creating a New PostgreSQL Cluster Exclusively for Testing
The following environment variables need to be set both for initial setup and whenever the tests are run. (direnv is
highly recommended). Depending on your platform, you may need to change the host for `PGX_TEST_UNIX_SOCKET_CONN_STRING`.
```
export PGPORT=5015
export PGUSER=postgres
export PGDATABASE=pgx_test
export POSTGRESQL_DATA_DIR=postgresql
export PGX_TEST_DATABASE="host=127.0.0.1 database=pgx_test user=pgx_md5 password=secret"
export PGX_TEST_UNIX_SOCKET_CONN_STRING="host=/private/tmp database=pgx_test"
export PGX_TEST_TCP_CONN_STRING="host=127.0.0.1 database=pgx_test user=pgx_md5 password=secret"
export PGX_TEST_SCRAM_PASSWORD_CONN_STRING="host=127.0.0.1 user=pgx_scram password=secret database=pgx_test"
export PGX_TEST_MD5_PASSWORD_CONN_STRING="host=127.0.0.1 database=pgx_test user=pgx_md5 password=secret"
export PGX_TEST_PLAIN_PASSWORD_CONN_STRING="host=127.0.0.1 user=pgx_pw password=secret"
export PGX_TEST_TLS_CONN_STRING="host=localhost user=pgx_ssl password=secret sslmode=verify-full sslrootcert=`pwd`/.testdb/ca.pem"
export PGX_SSL_PASSWORD=certpw
export PGX_TEST_TLS_CLIENT_CONN_STRING="host=localhost user=pgx_sslcert sslmode=verify-full sslrootcert=`pwd`/.testdb/ca.pem database=pgx_test sslcert=`pwd`/.testdb/pgx_sslcert.crt sslkey=`pwd`/.testdb/pgx_sslcert.key"
```
Create a new database cluster.
```
initdb --locale=en_US -E UTF-8 --username=postgres .testdb/$POSTGRESQL_DATA_DIR
echo "listen_addresses = '127.0.0.1'" >> .testdb/$POSTGRESQL_DATA_DIR/postgresql.conf
echo "port = $PGPORT" >> .testdb/$POSTGRESQL_DATA_DIR/postgresql.conf
cat testsetup/postgresql_ssl.conf >> .testdb/$POSTGRESQL_DATA_DIR/postgresql.conf
cp testsetup/pg_hba.conf .testdb/$POSTGRESQL_DATA_DIR/pg_hba.conf
cd .testdb
# Generate CA, server, and encrypted client certificates.
go run ../testsetup/generate_certs.go
# Copy certificates to server directory and set permissions.
cp ca.pem $POSTGRESQL_DATA_DIR/root.crt
cp localhost.key $POSTGRESQL_DATA_DIR/server.key
chmod 600 $POSTGRESQL_DATA_DIR/server.key
cp localhost.crt $POSTGRESQL_DATA_DIR/server.crt
cd ..
```
Start the new cluster. This will be necessary whenever you are running pgx tests.
```
postgres -D .testdb/$POSTGRESQL_DATA_DIR
```
Setup the test database in the new cluster.
```
createdb
psql --no-psqlrc -f testsetup/postgresql_setup.sql
```
### PgBouncer
There are tests specific for PgBouncer that will be executed if `PGX_TEST_PGBOUNCER_CONN_STRING` is set.
### Optional Tests
pgx supports multiple connection types and means of authentication. These tests are optional. They will only run if the
appropriate environment variables are set. In addition, there may be tests specific to particular PostgreSQL versions,
non-PostgreSQL servers (e.g. CockroachDB), or connection poolers (e.g. PgBouncer). `go test ./... -v | grep SKIP` to see
if any tests are being skipped.

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Copyright (c) 2013-2021 Jack Christensen
MIT License
Permission is hereby granted, free of charge, to any person obtaining
a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:
The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

191
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[![Go Reference](https://pkg.go.dev/badge/github.com/jackc/pgx/v5.svg)](https://pkg.go.dev/github.com/jackc/pgx/v5)
[![Build Status](https://github.com/jackc/pgx/actions/workflows/ci.yml/badge.svg)](https://github.com/jackc/pgx/actions/workflows/ci.yml)
# pgx - PostgreSQL Driver and Toolkit
pgx is a pure Go driver and toolkit for PostgreSQL.
The pgx driver is a low-level, high performance interface that exposes PostgreSQL-specific features such as `LISTEN` /
`NOTIFY` and `COPY`. It also includes an adapter for the standard `database/sql` interface.
The toolkit component is a related set of packages that implement PostgreSQL functionality such as parsing the wire protocol
and type mapping between PostgreSQL and Go. These underlying packages can be used to implement alternative drivers,
proxies, load balancers, logical replication clients, etc.
## Example Usage
```go
package main
import (
"context"
"fmt"
"os"
"github.com/jackc/pgx/v5"
)
func main() {
// urlExample := "postgres://username:password@localhost:5432/database_name"
conn, err := pgx.Connect(context.Background(), os.Getenv("DATABASE_URL"))
if err != nil {
fmt.Fprintf(os.Stderr, "Unable to connect to database: %v\n", err)
os.Exit(1)
}
defer conn.Close(context.Background())
var name string
var weight int64
err = conn.QueryRow(context.Background(), "select name, weight from widgets where id=$1", 42).Scan(&name, &weight)
if err != nil {
fmt.Fprintf(os.Stderr, "QueryRow failed: %v\n", err)
os.Exit(1)
}
fmt.Println(name, weight)
}
```
See the [getting started guide](https://github.com/jackc/pgx/wiki/Getting-started-with-pgx) for more information.
## Features
* Support for approximately 70 different PostgreSQL types
* Automatic statement preparation and caching
* Batch queries
* Single-round trip query mode
* Full TLS connection control
* Binary format support for custom types (allows for much quicker encoding/decoding)
* `COPY` protocol support for faster bulk data loads
* Tracing and logging support
* Connection pool with after-connect hook for arbitrary connection setup
* `LISTEN` / `NOTIFY`
* Conversion of PostgreSQL arrays to Go slice mappings for integers, floats, and strings
* `hstore` support
* `json` and `jsonb` support
* Maps `inet` and `cidr` PostgreSQL types to `netip.Addr` and `netip.Prefix`
* Large object support
* NULL mapping to pointer to pointer
* Supports `database/sql.Scanner` and `database/sql/driver.Valuer` interfaces for custom types
* Notice response handling
* Simulated nested transactions with savepoints
## Choosing Between the pgx and database/sql Interfaces
The pgx interface is faster. Many PostgreSQL specific features such as `LISTEN` / `NOTIFY` and `COPY` are not available
through the `database/sql` interface.
The pgx interface is recommended when:
1. The application only targets PostgreSQL.
2. No other libraries that require `database/sql` are in use.
It is also possible to use the `database/sql` interface and convert a connection to the lower-level pgx interface as needed.
## Testing
See [CONTRIBUTING.md](./CONTRIBUTING.md) for setup instructions.
## Architecture
See the presentation at Golang Estonia, [PGX Top to Bottom](https://www.youtube.com/watch?v=sXMSWhcHCf8) for a description of pgx architecture.
## Supported Go and PostgreSQL Versions
pgx supports the same versions of Go and PostgreSQL that are supported by their respective teams. For [Go](https://golang.org/doc/devel/release.html#policy) that is the two most recent major releases and for [PostgreSQL](https://www.postgresql.org/support/versioning/) the major releases in the last 5 years. This means pgx supports Go 1.23 and higher and PostgreSQL 13 and higher. pgx also is tested against the latest version of [CockroachDB](https://www.cockroachlabs.com/product/).
## Version Policy
pgx follows semantic versioning for the documented public API on stable releases. `v5` is the latest stable major version.
## PGX Family Libraries
### [github.com/jackc/pglogrepl](https://github.com/jackc/pglogrepl)
pglogrepl provides functionality to act as a client for PostgreSQL logical replication.
### [github.com/jackc/pgmock](https://github.com/jackc/pgmock)
pgmock offers the ability to create a server that mocks the PostgreSQL wire protocol. This is used internally to test pgx by purposely inducing unusual errors. pgproto3 and pgmock together provide most of the foundational tooling required to implement a PostgreSQL proxy or MitM (such as for a custom connection pooler).
### [github.com/jackc/tern](https://github.com/jackc/tern)
tern is a stand-alone SQL migration system.
### [github.com/jackc/pgerrcode](https://github.com/jackc/pgerrcode)
pgerrcode contains constants for the PostgreSQL error codes.
## Adapters for 3rd Party Types
* [github.com/jackc/pgx-gofrs-uuid](https://github.com/jackc/pgx-gofrs-uuid)
* [github.com/jackc/pgx-shopspring-decimal](https://github.com/jackc/pgx-shopspring-decimal)
* [github.com/twpayne/pgx-geos](https://github.com/twpayne/pgx-geos) ([PostGIS](https://postgis.net/) and [GEOS](https://libgeos.org/) via [go-geos](https://github.com/twpayne/go-geos))
* [github.com/vgarvardt/pgx-google-uuid](https://github.com/vgarvardt/pgx-google-uuid)
## Adapters for 3rd Party Tracers
* [github.com/jackhopner/pgx-xray-tracer](https://github.com/jackhopner/pgx-xray-tracer)
* [github.com/exaring/otelpgx](https://github.com/exaring/otelpgx)
## Adapters for 3rd Party Loggers
These adapters can be used with the tracelog package.
* [github.com/jackc/pgx-go-kit-log](https://github.com/jackc/pgx-go-kit-log)
* [github.com/jackc/pgx-log15](https://github.com/jackc/pgx-log15)
* [github.com/jackc/pgx-logrus](https://github.com/jackc/pgx-logrus)
* [github.com/jackc/pgx-zap](https://github.com/jackc/pgx-zap)
* [github.com/jackc/pgx-zerolog](https://github.com/jackc/pgx-zerolog)
* [github.com/mcosta74/pgx-slog](https://github.com/mcosta74/pgx-slog)
* [github.com/kataras/pgx-golog](https://github.com/kataras/pgx-golog)
## 3rd Party Libraries with PGX Support
### [github.com/pashagolub/pgxmock](https://github.com/pashagolub/pgxmock)
pgxmock is a mock library implementing pgx interfaces.
pgxmock has one and only purpose - to simulate pgx behavior in tests, without needing a real database connection.
### [github.com/georgysavva/scany](https://github.com/georgysavva/scany)
Library for scanning data from a database into Go structs and more.
### [github.com/vingarcia/ksql](https://github.com/vingarcia/ksql)
A carefully designed SQL client for making using SQL easier,
more productive, and less error-prone on Golang.
### [github.com/otan/gopgkrb5](https://github.com/otan/gopgkrb5)
Adds GSSAPI / Kerberos authentication support.
### [github.com/wcamarao/pmx](https://github.com/wcamarao/pmx)
Explicit data mapping and scanning library for Go structs and slices.
### [github.com/stephenafamo/scan](https://github.com/stephenafamo/scan)
Type safe and flexible package for scanning database data into Go types.
Supports, structs, maps, slices and custom mapping functions.
### [github.com/z0ne-dev/mgx](https://github.com/z0ne-dev/mgx)
Code first migration library for native pgx (no database/sql abstraction).
### [github.com/amirsalarsafaei/sqlc-pgx-monitoring](https://github.com/amirsalarsafaei/sqlc-pgx-monitoring)
A database monitoring/metrics library for pgx and sqlc. Trace, log and monitor your sqlc query performance using OpenTelemetry.
### [https://github.com/nikolayk812/pgx-outbox](https://github.com/nikolayk812/pgx-outbox)
Simple Golang implementation for transactional outbox pattern for PostgreSQL using jackc/pgx driver.
### [https://github.com/Arlandaren/pgxWrappy](https://github.com/Arlandaren/pgxWrappy)
Simplifies working with the pgx library, providing convenient scanning of nested structures.
## [https://github.com/KoNekoD/pgx-colon-query-rewriter](https://github.com/KoNekoD/pgx-colon-query-rewriter)
Implementation of the pgx query rewriter to use ':' instead of '@' in named query parameters.

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require "erb"
rule '.go' => '.go.erb' do |task|
erb = ERB.new(File.read(task.source))
File.write(task.name, "// Code generated from #{task.source}. DO NOT EDIT.\n\n" + erb.result(binding))
sh "goimports", "-w", task.name
end
generated_code_files = [
"pgtype/int.go",
"pgtype/int_test.go",
"pgtype/integration_benchmark_test.go",
"pgtype/zeronull/int.go",
"pgtype/zeronull/int_test.go"
]
desc "Generate code"
task generate: generated_code_files

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package pgx
import (
"context"
"errors"
"fmt"
"github.com/jackc/pgx/v5/pgconn"
)
// QueuedQuery is a query that has been queued for execution via a Batch.
type QueuedQuery struct {
SQL string
Arguments []any
Fn batchItemFunc
sd *pgconn.StatementDescription
}
type batchItemFunc func(br BatchResults) error
// Query sets fn to be called when the response to qq is received.
func (qq *QueuedQuery) Query(fn func(rows Rows) error) {
qq.Fn = func(br BatchResults) error {
rows, _ := br.Query()
defer rows.Close()
err := fn(rows)
if err != nil {
return err
}
rows.Close()
return rows.Err()
}
}
// Query sets fn to be called when the response to qq is received.
func (qq *QueuedQuery) QueryRow(fn func(row Row) error) {
qq.Fn = func(br BatchResults) error {
row := br.QueryRow()
return fn(row)
}
}
// Exec sets fn to be called when the response to qq is received.
//
// Note: for simple batch insert uses where it is not required to handle
// each potential error individually, it's sufficient to not set any callbacks,
// and just handle the return value of BatchResults.Close.
func (qq *QueuedQuery) Exec(fn func(ct pgconn.CommandTag) error) {
qq.Fn = func(br BatchResults) error {
ct, err := br.Exec()
if err != nil {
return err
}
return fn(ct)
}
}
// Batch queries are a way of bundling multiple queries together to avoid
// unnecessary network round trips. A Batch must only be sent once.
type Batch struct {
QueuedQueries []*QueuedQuery
}
// Queue queues a query to batch b. query can be an SQL query or the name of a prepared statement. The only pgx option
// argument that is supported is QueryRewriter. Queries are executed using the connection's DefaultQueryExecMode.
//
// While query can contain multiple statements if the connection's DefaultQueryExecMode is QueryModeSimple, this should
// be avoided. QueuedQuery.Fn must not be set as it will only be called for the first query. That is, QueuedQuery.Query,
// QueuedQuery.QueryRow, and QueuedQuery.Exec must not be called. In addition, any error messages or tracing that
// include the current query may reference the wrong query.
func (b *Batch) Queue(query string, arguments ...any) *QueuedQuery {
qq := &QueuedQuery{
SQL: query,
Arguments: arguments,
}
b.QueuedQueries = append(b.QueuedQueries, qq)
return qq
}
// Len returns number of queries that have been queued so far.
func (b *Batch) Len() int {
return len(b.QueuedQueries)
}
type BatchResults interface {
// Exec reads the results from the next query in the batch as if the query has been sent with Conn.Exec. Prefer
// calling Exec on the QueuedQuery, or just calling Close.
Exec() (pgconn.CommandTag, error)
// Query reads the results from the next query in the batch as if the query has been sent with Conn.Query. Prefer
// calling Query on the QueuedQuery.
Query() (Rows, error)
// QueryRow reads the results from the next query in the batch as if the query has been sent with Conn.QueryRow.
// Prefer calling QueryRow on the QueuedQuery.
QueryRow() Row
// Close closes the batch operation. All unread results are read and any callback functions registered with
// QueuedQuery.Query, QueuedQuery.QueryRow, or QueuedQuery.Exec will be called. If a callback function returns an
// error or the batch encounters an error subsequent callback functions will not be called.
//
// For simple batch inserts inside a transaction or similar queries, it's sufficient to not set any callbacks,
// and just handle the return value of Close.
//
// Close must be called before the underlying connection can be used again. Any error that occurred during a batch
// operation may have made it impossible to resyncronize the connection with the server. In this case the underlying
// connection will have been closed.
//
// Close is safe to call multiple times. If it returns an error subsequent calls will return the same error. Callback
// functions will not be rerun.
Close() error
}
type batchResults struct {
ctx context.Context
conn *Conn
mrr *pgconn.MultiResultReader
err error
b *Batch
qqIdx int
closed bool
endTraced bool
}
// Exec reads the results from the next query in the batch as if the query has been sent with Exec.
func (br *batchResults) Exec() (pgconn.CommandTag, error) {
if br.err != nil {
return pgconn.CommandTag{}, br.err
}
if br.closed {
return pgconn.CommandTag{}, fmt.Errorf("batch already closed")
}
query, arguments, _ := br.nextQueryAndArgs()
if !br.mrr.NextResult() {
err := br.mrr.Close()
if err == nil {
err = errors.New("no more results in batch")
}
if br.conn.batchTracer != nil {
br.conn.batchTracer.TraceBatchQuery(br.ctx, br.conn, TraceBatchQueryData{
SQL: query,
Args: arguments,
Err: err,
})
}
return pgconn.CommandTag{}, err
}
commandTag, err := br.mrr.ResultReader().Close()
if err != nil {
br.err = err
br.mrr.Close()
}
if br.conn.batchTracer != nil {
br.conn.batchTracer.TraceBatchQuery(br.ctx, br.conn, TraceBatchQueryData{
SQL: query,
Args: arguments,
CommandTag: commandTag,
Err: br.err,
})
}
return commandTag, br.err
}
// Query reads the results from the next query in the batch as if the query has been sent with Query.
func (br *batchResults) Query() (Rows, error) {
query, arguments, ok := br.nextQueryAndArgs()
if !ok {
query = "batch query"
}
if br.err != nil {
return &baseRows{err: br.err, closed: true}, br.err
}
if br.closed {
alreadyClosedErr := fmt.Errorf("batch already closed")
return &baseRows{err: alreadyClosedErr, closed: true}, alreadyClosedErr
}
rows := br.conn.getRows(br.ctx, query, arguments)
rows.batchTracer = br.conn.batchTracer
if !br.mrr.NextResult() {
rows.err = br.mrr.Close()
if rows.err == nil {
rows.err = errors.New("no more results in batch")
}
rows.closed = true
if br.conn.batchTracer != nil {
br.conn.batchTracer.TraceBatchQuery(br.ctx, br.conn, TraceBatchQueryData{
SQL: query,
Args: arguments,
Err: rows.err,
})
}
return rows, rows.err
}
rows.resultReader = br.mrr.ResultReader()
return rows, nil
}
// QueryRow reads the results from the next query in the batch as if the query has been sent with QueryRow.
func (br *batchResults) QueryRow() Row {
rows, _ := br.Query()
return (*connRow)(rows.(*baseRows))
}
// Close closes the batch operation. Any error that occurred during a batch operation may have made it impossible to
// resyncronize the connection with the server. In this case the underlying connection will have been closed.
func (br *batchResults) Close() error {
defer func() {
if !br.endTraced {
if br.conn != nil && br.conn.batchTracer != nil {
br.conn.batchTracer.TraceBatchEnd(br.ctx, br.conn, TraceBatchEndData{Err: br.err})
}
br.endTraced = true
}
invalidateCachesOnBatchResultsError(br.conn, br.b, br.err)
}()
if br.err != nil {
return br.err
}
if br.closed {
return nil
}
// Read and run fn for all remaining items
for br.err == nil && !br.closed && br.b != nil && br.qqIdx < len(br.b.QueuedQueries) {
if br.b.QueuedQueries[br.qqIdx].Fn != nil {
err := br.b.QueuedQueries[br.qqIdx].Fn(br)
if err != nil {
br.err = err
}
} else {
br.Exec()
}
}
br.closed = true
err := br.mrr.Close()
if br.err == nil {
br.err = err
}
return br.err
}
func (br *batchResults) earlyError() error {
return br.err
}
func (br *batchResults) nextQueryAndArgs() (query string, args []any, ok bool) {
if br.b != nil && br.qqIdx < len(br.b.QueuedQueries) {
bi := br.b.QueuedQueries[br.qqIdx]
query = bi.SQL
args = bi.Arguments
ok = true
br.qqIdx++
}
return
}
type pipelineBatchResults struct {
ctx context.Context
conn *Conn
pipeline *pgconn.Pipeline
lastRows *baseRows
err error
b *Batch
qqIdx int
closed bool
endTraced bool
}
// Exec reads the results from the next query in the batch as if the query has been sent with Exec.
func (br *pipelineBatchResults) Exec() (pgconn.CommandTag, error) {
if br.err != nil {
return pgconn.CommandTag{}, br.err
}
if br.closed {
return pgconn.CommandTag{}, fmt.Errorf("batch already closed")
}
if br.lastRows != nil && br.lastRows.err != nil {
return pgconn.CommandTag{}, br.err
}
query, arguments, err := br.nextQueryAndArgs()
if err != nil {
return pgconn.CommandTag{}, err
}
results, err := br.pipeline.GetResults()
if err != nil {
br.err = err
return pgconn.CommandTag{}, br.err
}
var commandTag pgconn.CommandTag
switch results := results.(type) {
case *pgconn.ResultReader:
commandTag, br.err = results.Close()
default:
return pgconn.CommandTag{}, fmt.Errorf("unexpected pipeline result: %T", results)
}
if br.conn.batchTracer != nil {
br.conn.batchTracer.TraceBatchQuery(br.ctx, br.conn, TraceBatchQueryData{
SQL: query,
Args: arguments,
CommandTag: commandTag,
Err: br.err,
})
}
return commandTag, br.err
}
// Query reads the results from the next query in the batch as if the query has been sent with Query.
func (br *pipelineBatchResults) Query() (Rows, error) {
if br.err != nil {
return &baseRows{err: br.err, closed: true}, br.err
}
if br.closed {
alreadyClosedErr := fmt.Errorf("batch already closed")
return &baseRows{err: alreadyClosedErr, closed: true}, alreadyClosedErr
}
if br.lastRows != nil && br.lastRows.err != nil {
br.err = br.lastRows.err
return &baseRows{err: br.err, closed: true}, br.err
}
query, arguments, err := br.nextQueryAndArgs()
if err != nil {
return &baseRows{err: err, closed: true}, err
}
rows := br.conn.getRows(br.ctx, query, arguments)
rows.batchTracer = br.conn.batchTracer
br.lastRows = rows
results, err := br.pipeline.GetResults()
if err != nil {
br.err = err
rows.err = err
rows.closed = true
if br.conn.batchTracer != nil {
br.conn.batchTracer.TraceBatchQuery(br.ctx, br.conn, TraceBatchQueryData{
SQL: query,
Args: arguments,
Err: err,
})
}
} else {
switch results := results.(type) {
case *pgconn.ResultReader:
rows.resultReader = results
default:
err = fmt.Errorf("unexpected pipeline result: %T", results)
br.err = err
rows.err = err
rows.closed = true
}
}
return rows, rows.err
}
// QueryRow reads the results from the next query in the batch as if the query has been sent with QueryRow.
func (br *pipelineBatchResults) QueryRow() Row {
rows, _ := br.Query()
return (*connRow)(rows.(*baseRows))
}
// Close closes the batch operation. Any error that occurred during a batch operation may have made it impossible to
// resyncronize the connection with the server. In this case the underlying connection will have been closed.
func (br *pipelineBatchResults) Close() error {
defer func() {
if !br.endTraced {
if br.conn.batchTracer != nil {
br.conn.batchTracer.TraceBatchEnd(br.ctx, br.conn, TraceBatchEndData{Err: br.err})
}
br.endTraced = true
}
invalidateCachesOnBatchResultsError(br.conn, br.b, br.err)
}()
if br.err == nil && br.lastRows != nil && br.lastRows.err != nil {
br.err = br.lastRows.err
return br.err
}
if br.closed {
return br.err
}
// Read and run fn for all remaining items
for br.err == nil && !br.closed && br.b != nil && br.qqIdx < len(br.b.QueuedQueries) {
if br.b.QueuedQueries[br.qqIdx].Fn != nil {
err := br.b.QueuedQueries[br.qqIdx].Fn(br)
if err != nil {
br.err = err
}
} else {
br.Exec()
}
}
br.closed = true
err := br.pipeline.Close()
if br.err == nil {
br.err = err
}
return br.err
}
func (br *pipelineBatchResults) earlyError() error {
return br.err
}
func (br *pipelineBatchResults) nextQueryAndArgs() (query string, args []any, err error) {
if br.b == nil {
return "", nil, errors.New("no reference to batch")
}
if br.qqIdx >= len(br.b.QueuedQueries) {
return "", nil, errors.New("no more results in batch")
}
bi := br.b.QueuedQueries[br.qqIdx]
br.qqIdx++
return bi.SQL, bi.Arguments, nil
}
// invalidates statement and description caches on batch results error
func invalidateCachesOnBatchResultsError(conn *Conn, b *Batch, err error) {
if err != nil && conn != nil && b != nil {
if sc := conn.statementCache; sc != nil {
for _, bi := range b.QueuedQueries {
sc.Invalidate(bi.SQL)
}
}
if sc := conn.descriptionCache; sc != nil {
for _, bi := range b.QueuedQueries {
sc.Invalidate(bi.SQL)
}
}
}
}

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package pgx
import (
"bytes"
"context"
"fmt"
"io"
"github.com/jackc/pgx/v5/internal/pgio"
"github.com/jackc/pgx/v5/pgconn"
)
// CopyFromRows returns a CopyFromSource interface over the provided rows slice
// making it usable by *Conn.CopyFrom.
func CopyFromRows(rows [][]any) CopyFromSource {
return &copyFromRows{rows: rows, idx: -1}
}
type copyFromRows struct {
rows [][]any
idx int
}
func (ctr *copyFromRows) Next() bool {
ctr.idx++
return ctr.idx < len(ctr.rows)
}
func (ctr *copyFromRows) Values() ([]any, error) {
return ctr.rows[ctr.idx], nil
}
func (ctr *copyFromRows) Err() error {
return nil
}
// CopyFromSlice returns a CopyFromSource interface over a dynamic func
// making it usable by *Conn.CopyFrom.
func CopyFromSlice(length int, next func(int) ([]any, error)) CopyFromSource {
return &copyFromSlice{next: next, idx: -1, len: length}
}
type copyFromSlice struct {
next func(int) ([]any, error)
idx int
len int
err error
}
func (cts *copyFromSlice) Next() bool {
cts.idx++
return cts.idx < cts.len
}
func (cts *copyFromSlice) Values() ([]any, error) {
values, err := cts.next(cts.idx)
if err != nil {
cts.err = err
}
return values, err
}
func (cts *copyFromSlice) Err() error {
return cts.err
}
// CopyFromFunc returns a CopyFromSource interface that relies on nxtf for values.
// nxtf returns rows until it either signals an 'end of data' by returning row=nil and err=nil,
// or it returns an error. If nxtf returns an error, the copy is aborted.
func CopyFromFunc(nxtf func() (row []any, err error)) CopyFromSource {
return &copyFromFunc{next: nxtf}
}
type copyFromFunc struct {
next func() ([]any, error)
valueRow []any
err error
}
func (g *copyFromFunc) Next() bool {
g.valueRow, g.err = g.next()
// only return true if valueRow exists and no error
return g.valueRow != nil && g.err == nil
}
func (g *copyFromFunc) Values() ([]any, error) {
return g.valueRow, g.err
}
func (g *copyFromFunc) Err() error {
return g.err
}
// CopyFromSource is the interface used by *Conn.CopyFrom as the source for copy data.
type CopyFromSource interface {
// Next returns true if there is another row and makes the next row data
// available to Values(). When there are no more rows available or an error
// has occurred it returns false.
Next() bool
// Values returns the values for the current row.
Values() ([]any, error)
// Err returns any error that has been encountered by the CopyFromSource. If
// this is not nil *Conn.CopyFrom will abort the copy.
Err() error
}
type copyFrom struct {
conn *Conn
tableName Identifier
columnNames []string
rowSrc CopyFromSource
readerErrChan chan error
mode QueryExecMode
}
func (ct *copyFrom) run(ctx context.Context) (int64, error) {
if ct.conn.copyFromTracer != nil {
ctx = ct.conn.copyFromTracer.TraceCopyFromStart(ctx, ct.conn, TraceCopyFromStartData{
TableName: ct.tableName,
ColumnNames: ct.columnNames,
})
}
quotedTableName := ct.tableName.Sanitize()
cbuf := &bytes.Buffer{}
for i, cn := range ct.columnNames {
if i != 0 {
cbuf.WriteString(", ")
}
cbuf.WriteString(quoteIdentifier(cn))
}
quotedColumnNames := cbuf.String()
var sd *pgconn.StatementDescription
switch ct.mode {
case QueryExecModeExec, QueryExecModeSimpleProtocol:
// These modes don't support the binary format. Before the inclusion of the
// QueryExecModes, Conn.Prepare was called on every COPY operation to get
// the OIDs. These prepared statements were not cached.
//
// Since that's the same behavior provided by QueryExecModeDescribeExec,
// we'll default to that mode.
ct.mode = QueryExecModeDescribeExec
fallthrough
case QueryExecModeCacheStatement, QueryExecModeCacheDescribe, QueryExecModeDescribeExec:
var err error
sd, err = ct.conn.getStatementDescription(
ctx,
ct.mode,
fmt.Sprintf("select %s from %s", quotedColumnNames, quotedTableName),
)
if err != nil {
return 0, fmt.Errorf("statement description failed: %w", err)
}
default:
return 0, fmt.Errorf("unknown QueryExecMode: %v", ct.mode)
}
r, w := io.Pipe()
doneChan := make(chan struct{})
go func() {
defer close(doneChan)
// Purposely NOT using defer w.Close(). See https://github.com/golang/go/issues/24283.
buf := ct.conn.wbuf
buf = append(buf, "PGCOPY\n\377\r\n\000"...)
buf = pgio.AppendInt32(buf, 0)
buf = pgio.AppendInt32(buf, 0)
moreRows := true
for moreRows {
var err error
moreRows, buf, err = ct.buildCopyBuf(buf, sd)
if err != nil {
w.CloseWithError(err)
return
}
if ct.rowSrc.Err() != nil {
w.CloseWithError(ct.rowSrc.Err())
return
}
if len(buf) > 0 {
_, err = w.Write(buf)
if err != nil {
w.Close()
return
}
}
buf = buf[:0]
}
w.Close()
}()
commandTag, err := ct.conn.pgConn.CopyFrom(ctx, r, fmt.Sprintf("copy %s ( %s ) from stdin binary;", quotedTableName, quotedColumnNames))
r.Close()
<-doneChan
if ct.conn.copyFromTracer != nil {
ct.conn.copyFromTracer.TraceCopyFromEnd(ctx, ct.conn, TraceCopyFromEndData{
CommandTag: commandTag,
Err: err,
})
}
return commandTag.RowsAffected(), err
}
func (ct *copyFrom) buildCopyBuf(buf []byte, sd *pgconn.StatementDescription) (bool, []byte, error) {
const sendBufSize = 65536 - 5 // The packet has a 5-byte header
lastBufLen := 0
largestRowLen := 0
for ct.rowSrc.Next() {
lastBufLen = len(buf)
values, err := ct.rowSrc.Values()
if err != nil {
return false, nil, err
}
if len(values) != len(ct.columnNames) {
return false, nil, fmt.Errorf("expected %d values, got %d values", len(ct.columnNames), len(values))
}
buf = pgio.AppendInt16(buf, int16(len(ct.columnNames)))
for i, val := range values {
buf, err = encodeCopyValue(ct.conn.typeMap, buf, sd.Fields[i].DataTypeOID, val)
if err != nil {
return false, nil, err
}
}
rowLen := len(buf) - lastBufLen
if rowLen > largestRowLen {
largestRowLen = rowLen
}
// Try not to overflow size of the buffer PgConn.CopyFrom will be reading into. If that happens then the nature of
// io.Pipe means that the next Read will be short. This can lead to pathological send sizes such as 65531, 13, 65531
// 13, 65531, 13, 65531, 13.
if len(buf) > sendBufSize-largestRowLen {
return true, buf, nil
}
}
return false, buf, nil
}
// CopyFrom uses the PostgreSQL copy protocol to perform bulk data insertion. It returns the number of rows copied and
// an error.
//
// CopyFrom requires all values use the binary format. A pgtype.Type that supports the binary format must be registered
// for the type of each column. Almost all types implemented by pgx support the binary format.
//
// Even though enum types appear to be strings they still must be registered to use with CopyFrom. This can be done with
// Conn.LoadType and pgtype.Map.RegisterType.
func (c *Conn) CopyFrom(ctx context.Context, tableName Identifier, columnNames []string, rowSrc CopyFromSource) (int64, error) {
ct := &copyFrom{
conn: c,
tableName: tableName,
columnNames: columnNames,
rowSrc: rowSrc,
readerErrChan: make(chan error),
mode: c.config.DefaultQueryExecMode,
}
return ct.run(ctx)
}

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package pgx
import (
"context"
"fmt"
"regexp"
"strconv"
"strings"
"github.com/jackc/pgx/v5/pgtype"
)
/*
buildLoadDerivedTypesSQL generates the correct query for retrieving type information.
pgVersion: the major version of the PostgreSQL server
typeNames: the names of the types to load. If nil, load all types.
*/
func buildLoadDerivedTypesSQL(pgVersion int64, typeNames []string) string {
supportsMultirange := (pgVersion >= 14)
var typeNamesClause string
if typeNames == nil {
// This should not occur; this will not return any types
typeNamesClause = "= ''"
} else {
typeNamesClause = "= ANY($1)"
}
parts := make([]string, 0, 10)
// Each of the type names provided might be found in pg_class or pg_type.
// Additionally, it may or may not include a schema portion.
parts = append(parts, `
WITH RECURSIVE
-- find the OIDs in pg_class which match one of the provided type names
selected_classes(oid,reltype) AS (
-- this query uses the namespace search path, so will match type names without a schema prefix
SELECT pg_class.oid, pg_class.reltype
FROM pg_catalog.pg_class
LEFT JOIN pg_catalog.pg_namespace n ON n.oid = pg_class.relnamespace
WHERE pg_catalog.pg_table_is_visible(pg_class.oid)
AND relname `, typeNamesClause, `
UNION ALL
-- this query will only match type names which include the schema prefix
SELECT pg_class.oid, pg_class.reltype
FROM pg_class
INNER JOIN pg_namespace ON (pg_class.relnamespace = pg_namespace.oid)
WHERE nspname || '.' || relname `, typeNamesClause, `
),
selected_types(oid) AS (
-- collect the OIDs from pg_types which correspond to the selected classes
SELECT reltype AS oid
FROM selected_classes
UNION ALL
-- as well as any other type names which match our criteria
SELECT pg_type.oid
FROM pg_type
LEFT OUTER JOIN pg_namespace ON (pg_type.typnamespace = pg_namespace.oid)
WHERE typname `, typeNamesClause, `
OR nspname || '.' || typname `, typeNamesClause, `
),
-- this builds a parent/child mapping of objects, allowing us to know
-- all the child (ie: dependent) types that a parent (type) requires
-- As can be seen, there are 3 ways this can occur (the last of which
-- is due to being a composite class, where the composite fields are children)
pc(parent, child) AS (
SELECT parent.oid, parent.typelem
FROM pg_type parent
WHERE parent.typtype = 'b' AND parent.typelem != 0
UNION ALL
SELECT parent.oid, parent.typbasetype
FROM pg_type parent
WHERE parent.typtypmod = -1 AND parent.typbasetype != 0
UNION ALL
SELECT pg_type.oid, atttypid
FROM pg_attribute
INNER JOIN pg_class ON (pg_class.oid = pg_attribute.attrelid)
INNER JOIN pg_type ON (pg_type.oid = pg_class.reltype)
WHERE NOT attisdropped
AND attnum > 0
),
-- Now construct a recursive query which includes a 'depth' element.
-- This is used to ensure that the "youngest" children are registered before
-- their parents.
relationships(parent, child, depth) AS (
SELECT DISTINCT 0::OID, selected_types.oid, 0
FROM selected_types
UNION ALL
SELECT pg_type.oid AS parent, pg_attribute.atttypid AS child, 1
FROM selected_classes c
inner join pg_type ON (c.reltype = pg_type.oid)
inner join pg_attribute on (c.oid = pg_attribute.attrelid)
UNION ALL
SELECT pc.parent, pc.child, relationships.depth + 1
FROM pc
INNER JOIN relationships ON (pc.parent = relationships.child)
),
-- composite fields need to be encapsulated as a couple of arrays to provide the required information for registration
composite AS (
SELECT pg_type.oid, ARRAY_AGG(attname ORDER BY attnum) AS attnames, ARRAY_AGG(atttypid ORDER BY ATTNUM) AS atttypids
FROM pg_attribute
INNER JOIN pg_class ON (pg_class.oid = pg_attribute.attrelid)
INNER JOIN pg_type ON (pg_type.oid = pg_class.reltype)
WHERE NOT attisdropped
AND attnum > 0
GROUP BY pg_type.oid
)
-- Bring together this information, showing all the information which might possibly be required
-- to complete the registration, applying filters to only show the items which relate to the selected
-- types/classes.
SELECT typname,
pg_namespace.nspname,
typtype,
typbasetype,
typelem,
pg_type.oid,`)
if supportsMultirange {
parts = append(parts, `
COALESCE(multirange.rngtypid, 0) AS rngtypid,`)
} else {
parts = append(parts, `
0 AS rngtypid,`)
}
parts = append(parts, `
COALESCE(pg_range.rngsubtype, 0) AS rngsubtype,
attnames, atttypids
FROM relationships
INNER JOIN pg_type ON (pg_type.oid = relationships.child)
LEFT OUTER JOIN pg_range ON (pg_type.oid = pg_range.rngtypid)`)
if supportsMultirange {
parts = append(parts, `
LEFT OUTER JOIN pg_range multirange ON (pg_type.oid = multirange.rngmultitypid)`)
}
parts = append(parts, `
LEFT OUTER JOIN composite USING (oid)
LEFT OUTER JOIN pg_namespace ON (pg_type.typnamespace = pg_namespace.oid)
WHERE NOT (typtype = 'b' AND typelem = 0)`)
parts = append(parts, `
GROUP BY typname, pg_namespace.nspname, typtype, typbasetype, typelem, pg_type.oid, pg_range.rngsubtype,`)
if supportsMultirange {
parts = append(parts, `
multirange.rngtypid,`)
}
parts = append(parts, `
attnames, atttypids
ORDER BY MAX(depth) desc, typname;`)
return strings.Join(parts, "")
}
type derivedTypeInfo struct {
Oid, Typbasetype, Typelem, Rngsubtype, Rngtypid uint32
TypeName, Typtype, NspName string
Attnames []string
Atttypids []uint32
}
// LoadTypes performs a single (complex) query, returning all the required
// information to register the named types, as well as any other types directly
// or indirectly required to complete the registration.
// The result of this call can be passed into RegisterTypes to complete the process.
func (c *Conn) LoadTypes(ctx context.Context, typeNames []string) ([]*pgtype.Type, error) {
m := c.TypeMap()
if len(typeNames) == 0 {
return nil, fmt.Errorf("No type names were supplied.")
}
// Disregard server version errors. This will result in
// the SQL not support recent structures such as multirange
serverVersion, _ := serverVersion(c)
sql := buildLoadDerivedTypesSQL(serverVersion, typeNames)
rows, err := c.Query(ctx, sql, QueryExecModeSimpleProtocol, typeNames)
if err != nil {
return nil, fmt.Errorf("While generating load types query: %w", err)
}
defer rows.Close()
result := make([]*pgtype.Type, 0, 100)
for rows.Next() {
ti := derivedTypeInfo{}
err = rows.Scan(&ti.TypeName, &ti.NspName, &ti.Typtype, &ti.Typbasetype, &ti.Typelem, &ti.Oid, &ti.Rngtypid, &ti.Rngsubtype, &ti.Attnames, &ti.Atttypids)
if err != nil {
return nil, fmt.Errorf("While scanning type information: %w", err)
}
var type_ *pgtype.Type
switch ti.Typtype {
case "b": // array
dt, ok := m.TypeForOID(ti.Typelem)
if !ok {
return nil, fmt.Errorf("Array element OID %v not registered while loading pgtype %q", ti.Typelem, ti.TypeName)
}
type_ = &pgtype.Type{Name: ti.TypeName, OID: ti.Oid, Codec: &pgtype.ArrayCodec{ElementType: dt}}
case "c": // composite
var fields []pgtype.CompositeCodecField
for i, fieldName := range ti.Attnames {
dt, ok := m.TypeForOID(ti.Atttypids[i])
if !ok {
return nil, fmt.Errorf("Unknown field for composite type %q: field %q (OID %v) is not already registered.", ti.TypeName, fieldName, ti.Atttypids[i])
}
fields = append(fields, pgtype.CompositeCodecField{Name: fieldName, Type: dt})
}
type_ = &pgtype.Type{Name: ti.TypeName, OID: ti.Oid, Codec: &pgtype.CompositeCodec{Fields: fields}}
case "d": // domain
dt, ok := m.TypeForOID(ti.Typbasetype)
if !ok {
return nil, fmt.Errorf("Domain base type OID %v was not already registered, needed for %q", ti.Typbasetype, ti.TypeName)
}
type_ = &pgtype.Type{Name: ti.TypeName, OID: ti.Oid, Codec: dt.Codec}
case "e": // enum
type_ = &pgtype.Type{Name: ti.TypeName, OID: ti.Oid, Codec: &pgtype.EnumCodec{}}
case "r": // range
dt, ok := m.TypeForOID(ti.Rngsubtype)
if !ok {
return nil, fmt.Errorf("Range element OID %v was not already registered, needed for %q", ti.Rngsubtype, ti.TypeName)
}
type_ = &pgtype.Type{Name: ti.TypeName, OID: ti.Oid, Codec: &pgtype.RangeCodec{ElementType: dt}}
case "m": // multirange
dt, ok := m.TypeForOID(ti.Rngtypid)
if !ok {
return nil, fmt.Errorf("Multirange element OID %v was not already registered, needed for %q", ti.Rngtypid, ti.TypeName)
}
type_ = &pgtype.Type{Name: ti.TypeName, OID: ti.Oid, Codec: &pgtype.MultirangeCodec{ElementType: dt}}
default:
return nil, fmt.Errorf("Unknown typtype %q was found while registering %q", ti.Typtype, ti.TypeName)
}
// the type_ is imposible to be null
m.RegisterType(type_)
if ti.NspName != "" {
nspType := &pgtype.Type{Name: ti.NspName + "." + type_.Name, OID: type_.OID, Codec: type_.Codec}
m.RegisterType(nspType)
result = append(result, nspType)
}
result = append(result, type_)
}
return result, nil
}
// serverVersion returns the postgresql server version.
func serverVersion(c *Conn) (int64, error) {
serverVersionStr := c.PgConn().ParameterStatus("server_version")
serverVersionStr = regexp.MustCompile(`^[0-9]+`).FindString(serverVersionStr)
// if not PostgreSQL do nothing
if serverVersionStr == "" {
return 0, fmt.Errorf("Cannot identify server version in %q", serverVersionStr)
}
version, err := strconv.ParseInt(serverVersionStr, 10, 64)
if err != nil {
return 0, fmt.Errorf("postgres version parsing failed: %w", err)
}
return version, nil
}

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// Package pgx is a PostgreSQL database driver.
/*
pgx provides a native PostgreSQL driver and can act as a database/sql driver. The native PostgreSQL interface is similar
to the database/sql interface while providing better speed and access to PostgreSQL specific features. Use
github.com/jackc/pgx/v5/stdlib to use pgx as a database/sql compatible driver. See that package's documentation for
details.
Establishing a Connection
The primary way of establishing a connection is with [pgx.Connect]:
conn, err := pgx.Connect(context.Background(), os.Getenv("DATABASE_URL"))
The database connection string can be in URL or key/value format. Both PostgreSQL settings and pgx settings can be
specified here. In addition, a config struct can be created by [ParseConfig] and modified before establishing the
connection with [ConnectConfig] to configure settings such as tracing that cannot be configured with a connection
string.
Connection Pool
[*pgx.Conn] represents a single connection to the database and is not concurrency safe. Use package
github.com/jackc/pgx/v5/pgxpool for a concurrency safe connection pool.
Query Interface
pgx implements Query in the familiar database/sql style. However, pgx provides generic functions such as CollectRows and
ForEachRow that are a simpler and safer way of processing rows than manually calling defer rows.Close(), rows.Next(),
rows.Scan, and rows.Err().
CollectRows can be used collect all returned rows into a slice.
rows, _ := conn.Query(context.Background(), "select generate_series(1,$1)", 5)
numbers, err := pgx.CollectRows(rows, pgx.RowTo[int32])
if err != nil {
return err
}
// numbers => [1 2 3 4 5]
ForEachRow can be used to execute a callback function for every row. This is often easier than iterating over rows
directly.
var sum, n int32
rows, _ := conn.Query(context.Background(), "select generate_series(1,$1)", 10)
_, err := pgx.ForEachRow(rows, []any{&n}, func() error {
sum += n
return nil
})
if err != nil {
return err
}
pgx also implements QueryRow in the same style as database/sql.
var name string
var weight int64
err := conn.QueryRow(context.Background(), "select name, weight from widgets where id=$1", 42).Scan(&name, &weight)
if err != nil {
return err
}
Use Exec to execute a query that does not return a result set.
commandTag, err := conn.Exec(context.Background(), "delete from widgets where id=$1", 42)
if err != nil {
return err
}
if commandTag.RowsAffected() != 1 {
return errors.New("No row found to delete")
}
PostgreSQL Data Types
pgx uses the pgtype package to converting Go values to and from PostgreSQL values. It supports many PostgreSQL types
directly and is customizable and extendable. User defined data types such as enums, domains, and composite types may
require type registration. See that package's documentation for details.
Transactions
Transactions are started by calling Begin.
tx, err := conn.Begin(context.Background())
if err != nil {
return err
}
// Rollback is safe to call even if the tx is already closed, so if
// the tx commits successfully, this is a no-op
defer tx.Rollback(context.Background())
_, err = tx.Exec(context.Background(), "insert into foo(id) values (1)")
if err != nil {
return err
}
err = tx.Commit(context.Background())
if err != nil {
return err
}
The Tx returned from Begin also implements the Begin method. This can be used to implement pseudo nested transactions.
These are internally implemented with savepoints.
Use BeginTx to control the transaction mode. BeginTx also can be used to ensure a new transaction is created instead of
a pseudo nested transaction.
BeginFunc and BeginTxFunc are functions that begin a transaction, execute a function, and commit or rollback the
transaction depending on the return value of the function. These can be simpler and less error prone to use.
err = pgx.BeginFunc(context.Background(), conn, func(tx pgx.Tx) error {
_, err := tx.Exec(context.Background(), "insert into foo(id) values (1)")
return err
})
if err != nil {
return err
}
Prepared Statements
Prepared statements can be manually created with the Prepare method. However, this is rarely necessary because pgx
includes an automatic statement cache by default. Queries run through the normal Query, QueryRow, and Exec functions are
automatically prepared on first execution and the prepared statement is reused on subsequent executions. See ParseConfig
for information on how to customize or disable the statement cache.
Copy Protocol
Use CopyFrom to efficiently insert multiple rows at a time using the PostgreSQL copy protocol. CopyFrom accepts a
CopyFromSource interface. If the data is already in a [][]any use CopyFromRows to wrap it in a CopyFromSource interface.
Or implement CopyFromSource to avoid buffering the entire data set in memory.
rows := [][]any{
{"John", "Smith", int32(36)},
{"Jane", "Doe", int32(29)},
}
copyCount, err := conn.CopyFrom(
context.Background(),
pgx.Identifier{"people"},
[]string{"first_name", "last_name", "age"},
pgx.CopyFromRows(rows),
)
When you already have a typed array using CopyFromSlice can be more convenient.
rows := []User{
{"John", "Smith", 36},
{"Jane", "Doe", 29},
}
copyCount, err := conn.CopyFrom(
context.Background(),
pgx.Identifier{"people"},
[]string{"first_name", "last_name", "age"},
pgx.CopyFromSlice(len(rows), func(i int) ([]any, error) {
return []any{rows[i].FirstName, rows[i].LastName, rows[i].Age}, nil
}),
)
CopyFrom can be faster than an insert with as few as 5 rows.
Listen and Notify
pgx can listen to the PostgreSQL notification system with the `Conn.WaitForNotification` method. It blocks until a
notification is received or the context is canceled.
_, err := conn.Exec(context.Background(), "listen channelname")
if err != nil {
return err
}
notification, err := conn.WaitForNotification(context.Background())
if err != nil {
return err
}
// do something with notification
Tracing and Logging
pgx supports tracing by setting ConnConfig.Tracer. To combine several tracers you can use the multitracer.Tracer.
In addition, the tracelog package provides the TraceLog type which lets a traditional logger act as a Tracer.
For debug tracing of the actual PostgreSQL wire protocol messages see github.com/jackc/pgx/v5/pgproto3.
Lower Level PostgreSQL Functionality
github.com/jackc/pgx/v5/pgconn contains a lower level PostgreSQL driver roughly at the level of libpq. pgx.Conn is
implemented on top of pgconn. The Conn.PgConn() method can be used to access this lower layer.
PgBouncer
By default pgx automatically uses prepared statements. Prepared statements are incompatible with PgBouncer. This can be
disabled by setting a different QueryExecMode in ConnConfig.DefaultQueryExecMode.
*/
package pgx

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package pgx
import (
"fmt"
"github.com/jackc/pgx/v5/pgconn"
"github.com/jackc/pgx/v5/pgtype"
)
// ExtendedQueryBuilder is used to choose the parameter formats, to format the parameters and to choose the result
// formats for an extended query.
type ExtendedQueryBuilder struct {
ParamValues [][]byte
paramValueBytes []byte
ParamFormats []int16
ResultFormats []int16
}
// Build sets ParamValues, ParamFormats, and ResultFormats for use with *PgConn.ExecParams or *PgConn.ExecPrepared. If
// sd is nil then QueryExecModeExec behavior will be used.
func (eqb *ExtendedQueryBuilder) Build(m *pgtype.Map, sd *pgconn.StatementDescription, args []any) error {
eqb.reset()
if sd == nil {
for i := range args {
err := eqb.appendParam(m, 0, pgtype.TextFormatCode, args[i])
if err != nil {
err = fmt.Errorf("failed to encode args[%d]: %w", i, err)
return err
}
}
return nil
}
if len(sd.ParamOIDs) != len(args) {
return fmt.Errorf("mismatched param and argument count")
}
for i := range args {
err := eqb.appendParam(m, sd.ParamOIDs[i], -1, args[i])
if err != nil {
err = fmt.Errorf("failed to encode args[%d]: %w", i, err)
return err
}
}
for i := range sd.Fields {
eqb.appendResultFormat(m.FormatCodeForOID(sd.Fields[i].DataTypeOID))
}
return nil
}
// appendParam appends a parameter to the query. format may be -1 to automatically choose the format. If arg is nil it
// must be an untyped nil.
func (eqb *ExtendedQueryBuilder) appendParam(m *pgtype.Map, oid uint32, format int16, arg any) error {
if format == -1 {
preferredFormat := eqb.chooseParameterFormatCode(m, oid, arg)
preferredErr := eqb.appendParam(m, oid, preferredFormat, arg)
if preferredErr == nil {
return nil
}
var otherFormat int16
if preferredFormat == TextFormatCode {
otherFormat = BinaryFormatCode
} else {
otherFormat = TextFormatCode
}
otherErr := eqb.appendParam(m, oid, otherFormat, arg)
if otherErr == nil {
return nil
}
return preferredErr // return the error from the preferred format
}
v, err := eqb.encodeExtendedParamValue(m, oid, format, arg)
if err != nil {
return err
}
eqb.ParamFormats = append(eqb.ParamFormats, format)
eqb.ParamValues = append(eqb.ParamValues, v)
return nil
}
// appendResultFormat appends a result format to the query.
func (eqb *ExtendedQueryBuilder) appendResultFormat(format int16) {
eqb.ResultFormats = append(eqb.ResultFormats, format)
}
// reset readies eqb to build another query.
func (eqb *ExtendedQueryBuilder) reset() {
eqb.ParamValues = eqb.ParamValues[0:0]
eqb.paramValueBytes = eqb.paramValueBytes[0:0]
eqb.ParamFormats = eqb.ParamFormats[0:0]
eqb.ResultFormats = eqb.ResultFormats[0:0]
if cap(eqb.ParamValues) > 64 {
eqb.ParamValues = make([][]byte, 0, 64)
}
if cap(eqb.paramValueBytes) > 256 {
eqb.paramValueBytes = make([]byte, 0, 256)
}
if cap(eqb.ParamFormats) > 64 {
eqb.ParamFormats = make([]int16, 0, 64)
}
if cap(eqb.ResultFormats) > 64 {
eqb.ResultFormats = make([]int16, 0, 64)
}
}
func (eqb *ExtendedQueryBuilder) encodeExtendedParamValue(m *pgtype.Map, oid uint32, formatCode int16, arg any) ([]byte, error) {
if eqb.paramValueBytes == nil {
eqb.paramValueBytes = make([]byte, 0, 128)
}
pos := len(eqb.paramValueBytes)
buf, err := m.Encode(oid, formatCode, arg, eqb.paramValueBytes)
if err != nil {
return nil, err
}
if buf == nil {
return nil, nil
}
eqb.paramValueBytes = buf
return eqb.paramValueBytes[pos:], nil
}
// chooseParameterFormatCode determines the correct format code for an
// argument to a prepared statement. It defaults to TextFormatCode if no
// determination can be made.
func (eqb *ExtendedQueryBuilder) chooseParameterFormatCode(m *pgtype.Map, oid uint32, arg any) int16 {
switch arg.(type) {
case string, *string:
return TextFormatCode
}
return m.FormatCodeForOID(oid)
}

70
vendor/github.com/jackc/pgx/v5/internal/iobufpool/iobufpool.go generated vendored Normal file
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// Package iobufpool implements a global segregated-fit pool of buffers for IO.
//
// It uses *[]byte instead of []byte to avoid the sync.Pool allocation with Put. Unfortunately, using a pointer to avoid
// an allocation is purposely not documented. https://github.com/golang/go/issues/16323
package iobufpool
import "sync"
const minPoolExpOf2 = 8
var pools [18]*sync.Pool
func init() {
for i := range pools {
bufLen := 1 << (minPoolExpOf2 + i)
pools[i] = &sync.Pool{
New: func() any {
buf := make([]byte, bufLen)
return &buf
},
}
}
}
// Get gets a []byte of len size with cap <= size*2.
func Get(size int) *[]byte {
i := getPoolIdx(size)
if i >= len(pools) {
buf := make([]byte, size)
return &buf
}
ptrBuf := (pools[i].Get().(*[]byte))
*ptrBuf = (*ptrBuf)[:size]
return ptrBuf
}
func getPoolIdx(size int) int {
size--
size >>= minPoolExpOf2
i := 0
for size > 0 {
size >>= 1
i++
}
return i
}
// Put returns buf to the pool.
func Put(buf *[]byte) {
i := putPoolIdx(cap(*buf))
if i < 0 {
return
}
pools[i].Put(buf)
}
func putPoolIdx(size int) int {
minPoolSize := 1 << minPoolExpOf2
for i := range pools {
if size == minPoolSize<<i {
return i
}
}
return -1
}

6
vendor/github.com/jackc/pgx/v5/internal/pgio/README.md generated vendored Normal file
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# pgio
Package pgio is a low-level toolkit building messages in the PostgreSQL wire protocol.
pgio provides functions for appending integers to a []byte while doing byte
order conversion.

6
vendor/github.com/jackc/pgx/v5/internal/pgio/doc.go generated vendored Normal file
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// Package pgio is a low-level toolkit building messages in the PostgreSQL wire protocol.
/*
pgio provides functions for appending integers to a []byte while doing byte
order conversion.
*/
package pgio

40
vendor/github.com/jackc/pgx/v5/internal/pgio/write.go generated vendored Normal file
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package pgio
import "encoding/binary"
func AppendUint16(buf []byte, n uint16) []byte {
wp := len(buf)
buf = append(buf, 0, 0)
binary.BigEndian.PutUint16(buf[wp:], n)
return buf
}
func AppendUint32(buf []byte, n uint32) []byte {
wp := len(buf)
buf = append(buf, 0, 0, 0, 0)
binary.BigEndian.PutUint32(buf[wp:], n)
return buf
}
func AppendUint64(buf []byte, n uint64) []byte {
wp := len(buf)
buf = append(buf, 0, 0, 0, 0, 0, 0, 0, 0)
binary.BigEndian.PutUint64(buf[wp:], n)
return buf
}
func AppendInt16(buf []byte, n int16) []byte {
return AppendUint16(buf, uint16(n))
}
func AppendInt32(buf []byte, n int32) []byte {
return AppendUint32(buf, uint32(n))
}
func AppendInt64(buf []byte, n int64) []byte {
return AppendUint64(buf, uint64(n))
}
func SetInt32(buf []byte, n int32) {
binary.BigEndian.PutUint32(buf, uint32(n))
}

60
vendor/github.com/jackc/pgx/v5/internal/sanitize/benchmmark.sh generated vendored Normal file
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#!/usr/bin/env bash
current_branch=$(git rev-parse --abbrev-ref HEAD)
if [ "$current_branch" == "HEAD" ]; then
current_branch=$(git rev-parse HEAD)
fi
restore_branch() {
echo "Restoring original branch/commit: $current_branch"
git checkout "$current_branch"
}
trap restore_branch EXIT
# Check if there are uncommitted changes
if ! git diff --quiet || ! git diff --cached --quiet; then
echo "There are uncommitted changes. Please commit or stash them before running this script."
exit 1
fi
# Ensure that at least one commit argument is passed
if [ "$#" -lt 1 ]; then
echo "Usage: $0 <commit1> <commit2> ... <commitN>"
exit 1
fi
commits=("$@")
benchmarks_dir=benchmarks
if ! mkdir -p "${benchmarks_dir}"; then
echo "Unable to create dir for benchmarks data"
exit 1
fi
# Benchmark results
bench_files=()
# Run benchmark for each listed commit
for i in "${!commits[@]}"; do
commit="${commits[i]}"
git checkout "$commit" || {
echo "Failed to checkout $commit"
exit 1
}
# Sanitized commmit message
commit_message=$(git log -1 --pretty=format:"%s" | tr -c '[:alnum:]-_' '_')
# Benchmark data will go there
bench_file="${benchmarks_dir}/${i}_${commit_message}.bench"
if ! go test -bench=. -count=10 >"$bench_file"; then
echo "Benchmarking failed for commit $commit"
exit 1
fi
bench_files+=("$bench_file")
done
# go install golang.org/x/perf/cmd/benchstat[@latest]
benchstat "${bench_files[@]}"

460
vendor/github.com/jackc/pgx/v5/internal/sanitize/sanitize.go generated vendored Normal file
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package sanitize
import (
"bytes"
"encoding/hex"
"fmt"
"slices"
"strconv"
"strings"
"sync"
"time"
"unicode/utf8"
)
// Part is either a string or an int. A string is raw SQL. An int is a
// argument placeholder.
type Part any
type Query struct {
Parts []Part
}
// utf.DecodeRune returns the utf8.RuneError for errors. But that is actually rune U+FFFD -- the unicode replacement
// character. utf8.RuneError is not an error if it is also width 3.
//
// https://github.com/jackc/pgx/issues/1380
const replacementcharacterwidth = 3
const maxBufSize = 16384 // 16 Ki
var bufPool = &pool[*bytes.Buffer]{
new: func() *bytes.Buffer {
return &bytes.Buffer{}
},
reset: func(b *bytes.Buffer) bool {
n := b.Len()
b.Reset()
return n < maxBufSize
},
}
var null = []byte("null")
func (q *Query) Sanitize(args ...any) (string, error) {
argUse := make([]bool, len(args))
buf := bufPool.get()
defer bufPool.put(buf)
for _, part := range q.Parts {
switch part := part.(type) {
case string:
buf.WriteString(part)
case int:
argIdx := part - 1
var p []byte
if argIdx < 0 {
return "", fmt.Errorf("first sql argument must be > 0")
}
if argIdx >= len(args) {
return "", fmt.Errorf("insufficient arguments")
}
// Prevent SQL injection via Line Comment Creation
// https://github.com/jackc/pgx/security/advisories/GHSA-m7wr-2xf7-cm9p
buf.WriteByte(' ')
arg := args[argIdx]
switch arg := arg.(type) {
case nil:
p = null
case int64:
p = strconv.AppendInt(buf.AvailableBuffer(), arg, 10)
case float64:
p = strconv.AppendFloat(buf.AvailableBuffer(), arg, 'f', -1, 64)
case bool:
p = strconv.AppendBool(buf.AvailableBuffer(), arg)
case []byte:
p = QuoteBytes(buf.AvailableBuffer(), arg)
case string:
p = QuoteString(buf.AvailableBuffer(), arg)
case time.Time:
p = arg.Truncate(time.Microsecond).
AppendFormat(buf.AvailableBuffer(), "'2006-01-02 15:04:05.999999999Z07:00:00'")
default:
return "", fmt.Errorf("invalid arg type: %T", arg)
}
argUse[argIdx] = true
buf.Write(p)
// Prevent SQL injection via Line Comment Creation
// https://github.com/jackc/pgx/security/advisories/GHSA-m7wr-2xf7-cm9p
buf.WriteByte(' ')
default:
return "", fmt.Errorf("invalid Part type: %T", part)
}
}
for i, used := range argUse {
if !used {
return "", fmt.Errorf("unused argument: %d", i)
}
}
return buf.String(), nil
}
func NewQuery(sql string) (*Query, error) {
query := &Query{}
query.init(sql)
return query, nil
}
var sqlLexerPool = &pool[*sqlLexer]{
new: func() *sqlLexer {
return &sqlLexer{}
},
reset: func(sl *sqlLexer) bool {
*sl = sqlLexer{}
return true
},
}
func (q *Query) init(sql string) {
parts := q.Parts[:0]
if parts == nil {
// dirty, but fast heuristic to preallocate for ~90% usecases
n := strings.Count(sql, "$") + strings.Count(sql, "--") + 1
parts = make([]Part, 0, n)
}
l := sqlLexerPool.get()
defer sqlLexerPool.put(l)
l.src = sql
l.stateFn = rawState
l.parts = parts
for l.stateFn != nil {
l.stateFn = l.stateFn(l)
}
q.Parts = l.parts
}
func QuoteString(dst []byte, str string) []byte {
const quote = '\''
// Preallocate space for the worst case scenario
dst = slices.Grow(dst, len(str)*2+2)
// Add opening quote
dst = append(dst, quote)
// Iterate through the string without allocating
for i := 0; i < len(str); i++ {
if str[i] == quote {
dst = append(dst, quote, quote)
} else {
dst = append(dst, str[i])
}
}
// Add closing quote
dst = append(dst, quote)
return dst
}
func QuoteBytes(dst, buf []byte) []byte {
if len(buf) == 0 {
return append(dst, `'\x'`...)
}
// Calculate required length
requiredLen := 3 + hex.EncodedLen(len(buf)) + 1
// Ensure dst has enough capacity
if cap(dst)-len(dst) < requiredLen {
newDst := make([]byte, len(dst), len(dst)+requiredLen)
copy(newDst, dst)
dst = newDst
}
// Record original length and extend slice
origLen := len(dst)
dst = dst[:origLen+requiredLen]
// Add prefix
dst[origLen] = '\''
dst[origLen+1] = '\\'
dst[origLen+2] = 'x'
// Encode bytes directly into dst
hex.Encode(dst[origLen+3:len(dst)-1], buf)
// Add suffix
dst[len(dst)-1] = '\''
return dst
}
type sqlLexer struct {
src string
start int
pos int
nested int // multiline comment nesting level.
stateFn stateFn
parts []Part
}
type stateFn func(*sqlLexer) stateFn
func rawState(l *sqlLexer) stateFn {
for {
r, width := utf8.DecodeRuneInString(l.src[l.pos:])
l.pos += width
switch r {
case 'e', 'E':
nextRune, width := utf8.DecodeRuneInString(l.src[l.pos:])
if nextRune == '\'' {
l.pos += width
return escapeStringState
}
case '\'':
return singleQuoteState
case '"':
return doubleQuoteState
case '$':
nextRune, _ := utf8.DecodeRuneInString(l.src[l.pos:])
if '0' <= nextRune && nextRune <= '9' {
if l.pos-l.start > 0 {
l.parts = append(l.parts, l.src[l.start:l.pos-width])
}
l.start = l.pos
return placeholderState
}
case '-':
nextRune, width := utf8.DecodeRuneInString(l.src[l.pos:])
if nextRune == '-' {
l.pos += width
return oneLineCommentState
}
case '/':
nextRune, width := utf8.DecodeRuneInString(l.src[l.pos:])
if nextRune == '*' {
l.pos += width
return multilineCommentState
}
case utf8.RuneError:
if width != replacementcharacterwidth {
if l.pos-l.start > 0 {
l.parts = append(l.parts, l.src[l.start:l.pos])
l.start = l.pos
}
return nil
}
}
}
}
func singleQuoteState(l *sqlLexer) stateFn {
for {
r, width := utf8.DecodeRuneInString(l.src[l.pos:])
l.pos += width
switch r {
case '\'':
nextRune, width := utf8.DecodeRuneInString(l.src[l.pos:])
if nextRune != '\'' {
return rawState
}
l.pos += width
case utf8.RuneError:
if width != replacementcharacterwidth {
if l.pos-l.start > 0 {
l.parts = append(l.parts, l.src[l.start:l.pos])
l.start = l.pos
}
return nil
}
}
}
}
func doubleQuoteState(l *sqlLexer) stateFn {
for {
r, width := utf8.DecodeRuneInString(l.src[l.pos:])
l.pos += width
switch r {
case '"':
nextRune, width := utf8.DecodeRuneInString(l.src[l.pos:])
if nextRune != '"' {
return rawState
}
l.pos += width
case utf8.RuneError:
if width != replacementcharacterwidth {
if l.pos-l.start > 0 {
l.parts = append(l.parts, l.src[l.start:l.pos])
l.start = l.pos
}
return nil
}
}
}
}
// placeholderState consumes a placeholder value. The $ must have already has
// already been consumed. The first rune must be a digit.
func placeholderState(l *sqlLexer) stateFn {
num := 0
for {
r, width := utf8.DecodeRuneInString(l.src[l.pos:])
l.pos += width
if '0' <= r && r <= '9' {
num *= 10
num += int(r - '0')
} else {
l.parts = append(l.parts, num)
l.pos -= width
l.start = l.pos
return rawState
}
}
}
func escapeStringState(l *sqlLexer) stateFn {
for {
r, width := utf8.DecodeRuneInString(l.src[l.pos:])
l.pos += width
switch r {
case '\\':
_, width = utf8.DecodeRuneInString(l.src[l.pos:])
l.pos += width
case '\'':
nextRune, width := utf8.DecodeRuneInString(l.src[l.pos:])
if nextRune != '\'' {
return rawState
}
l.pos += width
case utf8.RuneError:
if width != replacementcharacterwidth {
if l.pos-l.start > 0 {
l.parts = append(l.parts, l.src[l.start:l.pos])
l.start = l.pos
}
return nil
}
}
}
}
func oneLineCommentState(l *sqlLexer) stateFn {
for {
r, width := utf8.DecodeRuneInString(l.src[l.pos:])
l.pos += width
switch r {
case '\\':
_, width = utf8.DecodeRuneInString(l.src[l.pos:])
l.pos += width
case '\n', '\r':
return rawState
case utf8.RuneError:
if width != replacementcharacterwidth {
if l.pos-l.start > 0 {
l.parts = append(l.parts, l.src[l.start:l.pos])
l.start = l.pos
}
return nil
}
}
}
}
func multilineCommentState(l *sqlLexer) stateFn {
for {
r, width := utf8.DecodeRuneInString(l.src[l.pos:])
l.pos += width
switch r {
case '/':
nextRune, width := utf8.DecodeRuneInString(l.src[l.pos:])
if nextRune == '*' {
l.pos += width
l.nested++
}
case '*':
nextRune, width := utf8.DecodeRuneInString(l.src[l.pos:])
if nextRune != '/' {
continue
}
l.pos += width
if l.nested == 0 {
return rawState
}
l.nested--
case utf8.RuneError:
if width != replacementcharacterwidth {
if l.pos-l.start > 0 {
l.parts = append(l.parts, l.src[l.start:l.pos])
l.start = l.pos
}
return nil
}
}
}
}
var queryPool = &pool[*Query]{
new: func() *Query {
return &Query{}
},
reset: func(q *Query) bool {
n := len(q.Parts)
q.Parts = q.Parts[:0]
return n < 64 // drop too large queries
},
}
// SanitizeSQL replaces placeholder values with args. It quotes and escapes args
// as necessary. This function is only safe when standard_conforming_strings is
// on.
func SanitizeSQL(sql string, args ...any) (string, error) {
query := queryPool.get()
query.init(sql)
defer queryPool.put(query)
return query.Sanitize(args...)
}
type pool[E any] struct {
p sync.Pool
new func() E
reset func(E) bool
}
func (pool *pool[E]) get() E {
v, ok := pool.p.Get().(E)
if !ok {
v = pool.new()
}
return v
}
func (p *pool[E]) put(v E) {
if p.reset(v) {
p.p.Put(v)
}
}

111
vendor/github.com/jackc/pgx/v5/internal/stmtcache/lru_cache.go generated vendored Normal file
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package stmtcache
import (
"container/list"
"github.com/jackc/pgx/v5/pgconn"
)
// LRUCache implements Cache with a Least Recently Used (LRU) cache.
type LRUCache struct {
cap int
m map[string]*list.Element
l *list.List
invalidStmts []*pgconn.StatementDescription
}
// NewLRUCache creates a new LRUCache. cap is the maximum size of the cache.
func NewLRUCache(cap int) *LRUCache {
return &LRUCache{
cap: cap,
m: make(map[string]*list.Element),
l: list.New(),
}
}
// Get returns the statement description for sql. Returns nil if not found.
func (c *LRUCache) Get(key string) *pgconn.StatementDescription {
if el, ok := c.m[key]; ok {
c.l.MoveToFront(el)
return el.Value.(*pgconn.StatementDescription)
}
return nil
}
// Put stores sd in the cache. Put panics if sd.SQL is "". Put does nothing if sd.SQL already exists in the cache or
// sd.SQL has been invalidated and HandleInvalidated has not been called yet.
func (c *LRUCache) Put(sd *pgconn.StatementDescription) {
if sd.SQL == "" {
panic("cannot store statement description with empty SQL")
}
if _, present := c.m[sd.SQL]; present {
return
}
// The statement may have been invalidated but not yet handled. Do not readd it to the cache.
for _, invalidSD := range c.invalidStmts {
if invalidSD.SQL == sd.SQL {
return
}
}
if c.l.Len() == c.cap {
c.invalidateOldest()
}
el := c.l.PushFront(sd)
c.m[sd.SQL] = el
}
// Invalidate invalidates statement description identified by sql. Does nothing if not found.
func (c *LRUCache) Invalidate(sql string) {
if el, ok := c.m[sql]; ok {
delete(c.m, sql)
c.invalidStmts = append(c.invalidStmts, el.Value.(*pgconn.StatementDescription))
c.l.Remove(el)
}
}
// InvalidateAll invalidates all statement descriptions.
func (c *LRUCache) InvalidateAll() {
el := c.l.Front()
for el != nil {
c.invalidStmts = append(c.invalidStmts, el.Value.(*pgconn.StatementDescription))
el = el.Next()
}
c.m = make(map[string]*list.Element)
c.l = list.New()
}
// GetInvalidated returns a slice of all statement descriptions invalidated since the last call to RemoveInvalidated.
func (c *LRUCache) GetInvalidated() []*pgconn.StatementDescription {
return c.invalidStmts
}
// RemoveInvalidated removes all invalidated statement descriptions. No other calls to Cache must be made between a
// call to GetInvalidated and RemoveInvalidated or RemoveInvalidated may remove statement descriptions that were
// never seen by the call to GetInvalidated.
func (c *LRUCache) RemoveInvalidated() {
c.invalidStmts = nil
}
// Len returns the number of cached prepared statement descriptions.
func (c *LRUCache) Len() int {
return c.l.Len()
}
// Cap returns the maximum number of cached prepared statement descriptions.
func (c *LRUCache) Cap() int {
return c.cap
}
func (c *LRUCache) invalidateOldest() {
oldest := c.l.Back()
sd := oldest.Value.(*pgconn.StatementDescription)
c.invalidStmts = append(c.invalidStmts, sd)
delete(c.m, sd.SQL)
c.l.Remove(oldest)
}

45
vendor/github.com/jackc/pgx/v5/internal/stmtcache/stmtcache.go generated vendored Normal file
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// Package stmtcache is a cache for statement descriptions.
package stmtcache
import (
"crypto/sha256"
"encoding/hex"
"github.com/jackc/pgx/v5/pgconn"
)
// StatementName returns a statement name that will be stable for sql across multiple connections and program
// executions.
func StatementName(sql string) string {
digest := sha256.Sum256([]byte(sql))
return "stmtcache_" + hex.EncodeToString(digest[0:24])
}
// Cache caches statement descriptions.
type Cache interface {
// Get returns the statement description for sql. Returns nil if not found.
Get(sql string) *pgconn.StatementDescription
// Put stores sd in the cache. Put panics if sd.SQL is "". Put does nothing if sd.SQL already exists in the cache.
Put(sd *pgconn.StatementDescription)
// Invalidate invalidates statement description identified by sql. Does nothing if not found.
Invalidate(sql string)
// InvalidateAll invalidates all statement descriptions.
InvalidateAll()
// GetInvalidated returns a slice of all statement descriptions invalidated since the last call to RemoveInvalidated.
GetInvalidated() []*pgconn.StatementDescription
// RemoveInvalidated removes all invalidated statement descriptions. No other calls to Cache must be made between a
// call to GetInvalidated and RemoveInvalidated or RemoveInvalidated may remove statement descriptions that were
// never seen by the call to GetInvalidated.
RemoveInvalidated()
// Len returns the number of cached prepared statement descriptions.
Len() int
// Cap returns the maximum number of cached prepared statement descriptions.
Cap() int
}

77
vendor/github.com/jackc/pgx/v5/internal/stmtcache/unlimited_cache.go generated vendored Normal file
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package stmtcache
import (
"math"
"github.com/jackc/pgx/v5/pgconn"
)
// UnlimitedCache implements Cache with no capacity limit.
type UnlimitedCache struct {
m map[string]*pgconn.StatementDescription
invalidStmts []*pgconn.StatementDescription
}
// NewUnlimitedCache creates a new UnlimitedCache.
func NewUnlimitedCache() *UnlimitedCache {
return &UnlimitedCache{
m: make(map[string]*pgconn.StatementDescription),
}
}
// Get returns the statement description for sql. Returns nil if not found.
func (c *UnlimitedCache) Get(sql string) *pgconn.StatementDescription {
return c.m[sql]
}
// Put stores sd in the cache. Put panics if sd.SQL is "". Put does nothing if sd.SQL already exists in the cache.
func (c *UnlimitedCache) Put(sd *pgconn.StatementDescription) {
if sd.SQL == "" {
panic("cannot store statement description with empty SQL")
}
if _, present := c.m[sd.SQL]; present {
return
}
c.m[sd.SQL] = sd
}
// Invalidate invalidates statement description identified by sql. Does nothing if not found.
func (c *UnlimitedCache) Invalidate(sql string) {
if sd, ok := c.m[sql]; ok {
delete(c.m, sql)
c.invalidStmts = append(c.invalidStmts, sd)
}
}
// InvalidateAll invalidates all statement descriptions.
func (c *UnlimitedCache) InvalidateAll() {
for _, sd := range c.m {
c.invalidStmts = append(c.invalidStmts, sd)
}
c.m = make(map[string]*pgconn.StatementDescription)
}
// GetInvalidated returns a slice of all statement descriptions invalidated since the last call to RemoveInvalidated.
func (c *UnlimitedCache) GetInvalidated() []*pgconn.StatementDescription {
return c.invalidStmts
}
// RemoveInvalidated removes all invalidated statement descriptions. No other calls to Cache must be made between a
// call to GetInvalidated and RemoveInvalidated or RemoveInvalidated may remove statement descriptions that were
// never seen by the call to GetInvalidated.
func (c *UnlimitedCache) RemoveInvalidated() {
c.invalidStmts = nil
}
// Len returns the number of cached prepared statement descriptions.
func (c *UnlimitedCache) Len() int {
return len(c.m)
}
// Cap returns the maximum number of cached prepared statement descriptions.
func (c *UnlimitedCache) Cap() int {
return math.MaxInt
}

161
vendor/github.com/jackc/pgx/v5/large_objects.go generated vendored Normal file
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package pgx
import (
"context"
"errors"
"io"
"github.com/jackc/pgx/v5/pgtype"
)
// The PostgreSQL wire protocol has a limit of 1 GB - 1 per message. See definition of
// PQ_LARGE_MESSAGE_LIMIT in the PostgreSQL source code. To allow for the other data
// in the message,maxLargeObjectMessageLength should be no larger than 1 GB - 1 KB.
var maxLargeObjectMessageLength = 1024*1024*1024 - 1024
// LargeObjects is a structure used to access the large objects API. It is only valid within the transaction where it
// was created.
//
// For more details see: http://www.postgresql.org/docs/current/static/largeobjects.html
type LargeObjects struct {
tx Tx
}
type LargeObjectMode int32
const (
LargeObjectModeWrite LargeObjectMode = 0x20000
LargeObjectModeRead LargeObjectMode = 0x40000
)
// Create creates a new large object. If oid is zero, the server assigns an unused OID.
func (o *LargeObjects) Create(ctx context.Context, oid uint32) (uint32, error) {
err := o.tx.QueryRow(ctx, "select lo_create($1)", oid).Scan(&oid)
return oid, err
}
// Open opens an existing large object with the given mode. ctx will also be used for all operations on the opened large
// object.
func (o *LargeObjects) Open(ctx context.Context, oid uint32, mode LargeObjectMode) (*LargeObject, error) {
var fd int32
err := o.tx.QueryRow(ctx, "select lo_open($1, $2)", oid, mode).Scan(&fd)
if err != nil {
return nil, err
}
return &LargeObject{fd: fd, tx: o.tx, ctx: ctx}, nil
}
// Unlink removes a large object from the database.
func (o *LargeObjects) Unlink(ctx context.Context, oid uint32) error {
var result int32
err := o.tx.QueryRow(ctx, "select lo_unlink($1)", oid).Scan(&result)
if err != nil {
return err
}
if result != 1 {
return errors.New("failed to remove large object")
}
return nil
}
// A LargeObject is a large object stored on the server. It is only valid within the transaction that it was initialized
// in. It uses the context it was initialized with for all operations. It implements these interfaces:
//
// io.Writer
// io.Reader
// io.Seeker
// io.Closer
type LargeObject struct {
ctx context.Context
tx Tx
fd int32
}
// Write writes p to the large object and returns the number of bytes written and an error if not all of p was written.
func (o *LargeObject) Write(p []byte) (int, error) {
nTotal := 0
for {
expected := len(p) - nTotal
if expected == 0 {
break
} else if expected > maxLargeObjectMessageLength {
expected = maxLargeObjectMessageLength
}
var n int
err := o.tx.QueryRow(o.ctx, "select lowrite($1, $2)", o.fd, p[nTotal:nTotal+expected]).Scan(&n)
if err != nil {
return nTotal, err
}
if n < 0 {
return nTotal, errors.New("failed to write to large object")
}
nTotal += n
if n < expected {
return nTotal, errors.New("short write to large object")
} else if n > expected {
return nTotal, errors.New("invalid write to large object")
}
}
return nTotal, nil
}
// Read reads up to len(p) bytes into p returning the number of bytes read.
func (o *LargeObject) Read(p []byte) (int, error) {
nTotal := 0
for {
expected := len(p) - nTotal
if expected == 0 {
break
} else if expected > maxLargeObjectMessageLength {
expected = maxLargeObjectMessageLength
}
res := pgtype.PreallocBytes(p[nTotal:])
err := o.tx.QueryRow(o.ctx, "select loread($1, $2)", o.fd, expected).Scan(&res)
// We compute expected so that it always fits into p, so it should never happen
// that PreallocBytes's ScanBytes had to allocate a new slice.
nTotal += len(res)
if err != nil {
return nTotal, err
}
if len(res) < expected {
return nTotal, io.EOF
} else if len(res) > expected {
return nTotal, errors.New("invalid read of large object")
}
}
return nTotal, nil
}
// Seek moves the current location pointer to the new location specified by offset.
func (o *LargeObject) Seek(offset int64, whence int) (n int64, err error) {
err = o.tx.QueryRow(o.ctx, "select lo_lseek64($1, $2, $3)", o.fd, offset, whence).Scan(&n)
return n, err
}
// Tell returns the current read or write location of the large object descriptor.
func (o *LargeObject) Tell() (n int64, err error) {
err = o.tx.QueryRow(o.ctx, "select lo_tell64($1)", o.fd).Scan(&n)
return n, err
}
// Truncate the large object to size.
func (o *LargeObject) Truncate(size int64) (err error) {
_, err = o.tx.Exec(o.ctx, "select lo_truncate64($1, $2)", o.fd, size)
return err
}
// Close the large object descriptor.
func (o *LargeObject) Close() error {
_, err := o.tx.Exec(o.ctx, "select lo_close($1)", o.fd)
return err
}

295
vendor/github.com/jackc/pgx/v5/named_args.go generated vendored Normal file
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package pgx
import (
"context"
"fmt"
"strconv"
"strings"
"unicode/utf8"
)
// NamedArgs can be used as the first argument to a query method. It will replace every '@' named placeholder with a '$'
// ordinal placeholder and construct the appropriate arguments.
//
// For example, the following two queries are equivalent:
//
// conn.Query(ctx, "select * from widgets where foo = @foo and bar = @bar", pgx.NamedArgs{"foo": 1, "bar": 2})
// conn.Query(ctx, "select * from widgets where foo = $1 and bar = $2", 1, 2)
//
// Named placeholders are case sensitive and must start with a letter or underscore. Subsequent characters can be
// letters, numbers, or underscores.
type NamedArgs map[string]any
// RewriteQuery implements the QueryRewriter interface.
func (na NamedArgs) RewriteQuery(ctx context.Context, conn *Conn, sql string, args []any) (newSQL string, newArgs []any, err error) {
return rewriteQuery(na, sql, false)
}
// StrictNamedArgs can be used in the same way as NamedArgs, but provided arguments are also checked to include all
// named arguments that the sql query uses, and no extra arguments.
type StrictNamedArgs map[string]any
// RewriteQuery implements the QueryRewriter interface.
func (sna StrictNamedArgs) RewriteQuery(ctx context.Context, conn *Conn, sql string, args []any) (newSQL string, newArgs []any, err error) {
return rewriteQuery(sna, sql, true)
}
type namedArg string
type sqlLexer struct {
src string
start int
pos int
nested int // multiline comment nesting level.
stateFn stateFn
parts []any
nameToOrdinal map[namedArg]int
}
type stateFn func(*sqlLexer) stateFn
func rewriteQuery(na map[string]any, sql string, isStrict bool) (newSQL string, newArgs []any, err error) {
l := &sqlLexer{
src: sql,
stateFn: rawState,
nameToOrdinal: make(map[namedArg]int, len(na)),
}
for l.stateFn != nil {
l.stateFn = l.stateFn(l)
}
sb := strings.Builder{}
for _, p := range l.parts {
switch p := p.(type) {
case string:
sb.WriteString(p)
case namedArg:
sb.WriteRune('$')
sb.WriteString(strconv.Itoa(l.nameToOrdinal[p]))
}
}
newArgs = make([]any, len(l.nameToOrdinal))
for name, ordinal := range l.nameToOrdinal {
var found bool
newArgs[ordinal-1], found = na[string(name)]
if isStrict && !found {
return "", nil, fmt.Errorf("argument %s found in sql query but not present in StrictNamedArgs", name)
}
}
if isStrict {
for name := range na {
if _, found := l.nameToOrdinal[namedArg(name)]; !found {
return "", nil, fmt.Errorf("argument %s of StrictNamedArgs not found in sql query", name)
}
}
}
return sb.String(), newArgs, nil
}
func rawState(l *sqlLexer) stateFn {
for {
r, width := utf8.DecodeRuneInString(l.src[l.pos:])
l.pos += width
switch r {
case 'e', 'E':
nextRune, width := utf8.DecodeRuneInString(l.src[l.pos:])
if nextRune == '\'' {
l.pos += width
return escapeStringState
}
case '\'':
return singleQuoteState
case '"':
return doubleQuoteState
case '@':
nextRune, _ := utf8.DecodeRuneInString(l.src[l.pos:])
if isLetter(nextRune) || nextRune == '_' {
if l.pos-l.start > 0 {
l.parts = append(l.parts, l.src[l.start:l.pos-width])
}
l.start = l.pos
return namedArgState
}
case '-':
nextRune, width := utf8.DecodeRuneInString(l.src[l.pos:])
if nextRune == '-' {
l.pos += width
return oneLineCommentState
}
case '/':
nextRune, width := utf8.DecodeRuneInString(l.src[l.pos:])
if nextRune == '*' {
l.pos += width
return multilineCommentState
}
case utf8.RuneError:
if l.pos-l.start > 0 {
l.parts = append(l.parts, l.src[l.start:l.pos])
l.start = l.pos
}
return nil
}
}
}
func isLetter(r rune) bool {
return (r >= 'a' && r <= 'z') || (r >= 'A' && r <= 'Z')
}
func namedArgState(l *sqlLexer) stateFn {
for {
r, width := utf8.DecodeRuneInString(l.src[l.pos:])
l.pos += width
if r == utf8.RuneError {
if l.pos-l.start > 0 {
na := namedArg(l.src[l.start:l.pos])
if _, found := l.nameToOrdinal[na]; !found {
l.nameToOrdinal[na] = len(l.nameToOrdinal) + 1
}
l.parts = append(l.parts, na)
l.start = l.pos
}
return nil
} else if !(isLetter(r) || (r >= '0' && r <= '9') || r == '_') {
l.pos -= width
na := namedArg(l.src[l.start:l.pos])
if _, found := l.nameToOrdinal[na]; !found {
l.nameToOrdinal[na] = len(l.nameToOrdinal) + 1
}
l.parts = append(l.parts, namedArg(na))
l.start = l.pos
return rawState
}
}
}
func singleQuoteState(l *sqlLexer) stateFn {
for {
r, width := utf8.DecodeRuneInString(l.src[l.pos:])
l.pos += width
switch r {
case '\'':
nextRune, width := utf8.DecodeRuneInString(l.src[l.pos:])
if nextRune != '\'' {
return rawState
}
l.pos += width
case utf8.RuneError:
if l.pos-l.start > 0 {
l.parts = append(l.parts, l.src[l.start:l.pos])
l.start = l.pos
}
return nil
}
}
}
func doubleQuoteState(l *sqlLexer) stateFn {
for {
r, width := utf8.DecodeRuneInString(l.src[l.pos:])
l.pos += width
switch r {
case '"':
nextRune, width := utf8.DecodeRuneInString(l.src[l.pos:])
if nextRune != '"' {
return rawState
}
l.pos += width
case utf8.RuneError:
if l.pos-l.start > 0 {
l.parts = append(l.parts, l.src[l.start:l.pos])
l.start = l.pos
}
return nil
}
}
}
func escapeStringState(l *sqlLexer) stateFn {
for {
r, width := utf8.DecodeRuneInString(l.src[l.pos:])
l.pos += width
switch r {
case '\\':
_, width = utf8.DecodeRuneInString(l.src[l.pos:])
l.pos += width
case '\'':
nextRune, width := utf8.DecodeRuneInString(l.src[l.pos:])
if nextRune != '\'' {
return rawState
}
l.pos += width
case utf8.RuneError:
if l.pos-l.start > 0 {
l.parts = append(l.parts, l.src[l.start:l.pos])
l.start = l.pos
}
return nil
}
}
}
func oneLineCommentState(l *sqlLexer) stateFn {
for {
r, width := utf8.DecodeRuneInString(l.src[l.pos:])
l.pos += width
switch r {
case '\\':
_, width = utf8.DecodeRuneInString(l.src[l.pos:])
l.pos += width
case '\n', '\r':
return rawState
case utf8.RuneError:
if l.pos-l.start > 0 {
l.parts = append(l.parts, l.src[l.start:l.pos])
l.start = l.pos
}
return nil
}
}
}
func multilineCommentState(l *sqlLexer) stateFn {
for {
r, width := utf8.DecodeRuneInString(l.src[l.pos:])
l.pos += width
switch r {
case '/':
nextRune, width := utf8.DecodeRuneInString(l.src[l.pos:])
if nextRune == '*' {
l.pos += width
l.nested++
}
case '*':
nextRune, width := utf8.DecodeRuneInString(l.src[l.pos:])
if nextRune != '/' {
continue
}
l.pos += width
if l.nested == 0 {
return rawState
}
l.nested--
case utf8.RuneError:
if l.pos-l.start > 0 {
l.parts = append(l.parts, l.src[l.start:l.pos])
l.start = l.pos
}
return nil
}
}
}

29
vendor/github.com/jackc/pgx/v5/pgconn/README.md generated vendored Normal file
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# pgconn
Package pgconn is a low-level PostgreSQL database driver. It operates at nearly the same level as the C library libpq.
It is primarily intended to serve as the foundation for higher level libraries such as https://github.com/jackc/pgx.
Applications should handle normal queries with a higher level library and only use pgconn directly when required for
low-level access to PostgreSQL functionality.
## Example Usage
```go
pgConn, err := pgconn.Connect(context.Background(), os.Getenv("DATABASE_URL"))
if err != nil {
log.Fatalln("pgconn failed to connect:", err)
}
defer pgConn.Close(context.Background())
result := pgConn.ExecParams(context.Background(), "SELECT email FROM users WHERE id=$1", [][]byte{[]byte("123")}, nil, nil, nil)
for result.NextRow() {
fmt.Println("User 123 has email:", string(result.Values()[0]))
}
_, err = result.Close()
if err != nil {
log.Fatalln("failed reading result:", err)
}
```
## Testing
See CONTRIBUTING.md for setup instructions.

272
vendor/github.com/jackc/pgx/v5/pgconn/auth_scram.go generated vendored Normal file
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// SCRAM-SHA-256 authentication
//
// Resources:
// https://tools.ietf.org/html/rfc5802
// https://tools.ietf.org/html/rfc8265
// https://www.postgresql.org/docs/current/sasl-authentication.html
//
// Inspiration drawn from other implementations:
// https://github.com/lib/pq/pull/608
// https://github.com/lib/pq/pull/788
// https://github.com/lib/pq/pull/833
package pgconn
import (
"bytes"
"crypto/hmac"
"crypto/rand"
"crypto/sha256"
"encoding/base64"
"errors"
"fmt"
"strconv"
"github.com/jackc/pgx/v5/pgproto3"
"golang.org/x/crypto/pbkdf2"
"golang.org/x/text/secure/precis"
)
const clientNonceLen = 18
// Perform SCRAM authentication.
func (c *PgConn) scramAuth(serverAuthMechanisms []string) error {
sc, err := newScramClient(serverAuthMechanisms, c.config.Password)
if err != nil {
return err
}
// Send client-first-message in a SASLInitialResponse
saslInitialResponse := &pgproto3.SASLInitialResponse{
AuthMechanism: "SCRAM-SHA-256",
Data: sc.clientFirstMessage(),
}
c.frontend.Send(saslInitialResponse)
err = c.flushWithPotentialWriteReadDeadlock()
if err != nil {
return err
}
// Receive server-first-message payload in an AuthenticationSASLContinue.
saslContinue, err := c.rxSASLContinue()
if err != nil {
return err
}
err = sc.recvServerFirstMessage(saslContinue.Data)
if err != nil {
return err
}
// Send client-final-message in a SASLResponse
saslResponse := &pgproto3.SASLResponse{
Data: []byte(sc.clientFinalMessage()),
}
c.frontend.Send(saslResponse)
err = c.flushWithPotentialWriteReadDeadlock()
if err != nil {
return err
}
// Receive server-final-message payload in an AuthenticationSASLFinal.
saslFinal, err := c.rxSASLFinal()
if err != nil {
return err
}
return sc.recvServerFinalMessage(saslFinal.Data)
}
func (c *PgConn) rxSASLContinue() (*pgproto3.AuthenticationSASLContinue, error) {
msg, err := c.receiveMessage()
if err != nil {
return nil, err
}
switch m := msg.(type) {
case *pgproto3.AuthenticationSASLContinue:
return m, nil
case *pgproto3.ErrorResponse:
return nil, ErrorResponseToPgError(m)
}
return nil, fmt.Errorf("expected AuthenticationSASLContinue message but received unexpected message %T", msg)
}
func (c *PgConn) rxSASLFinal() (*pgproto3.AuthenticationSASLFinal, error) {
msg, err := c.receiveMessage()
if err != nil {
return nil, err
}
switch m := msg.(type) {
case *pgproto3.AuthenticationSASLFinal:
return m, nil
case *pgproto3.ErrorResponse:
return nil, ErrorResponseToPgError(m)
}
return nil, fmt.Errorf("expected AuthenticationSASLFinal message but received unexpected message %T", msg)
}
type scramClient struct {
serverAuthMechanisms []string
password []byte
clientNonce []byte
clientFirstMessageBare []byte
serverFirstMessage []byte
clientAndServerNonce []byte
salt []byte
iterations int
saltedPassword []byte
authMessage []byte
}
func newScramClient(serverAuthMechanisms []string, password string) (*scramClient, error) {
sc := &scramClient{
serverAuthMechanisms: serverAuthMechanisms,
}
// Ensure server supports SCRAM-SHA-256
hasScramSHA256 := false
for _, mech := range sc.serverAuthMechanisms {
if mech == "SCRAM-SHA-256" {
hasScramSHA256 = true
break
}
}
if !hasScramSHA256 {
return nil, errors.New("server does not support SCRAM-SHA-256")
}
// precis.OpaqueString is equivalent to SASLprep for password.
var err error
sc.password, err = precis.OpaqueString.Bytes([]byte(password))
if err != nil {
// PostgreSQL allows passwords invalid according to SCRAM / SASLprep.
sc.password = []byte(password)
}
buf := make([]byte, clientNonceLen)
_, err = rand.Read(buf)
if err != nil {
return nil, err
}
sc.clientNonce = make([]byte, base64.RawStdEncoding.EncodedLen(len(buf)))
base64.RawStdEncoding.Encode(sc.clientNonce, buf)
return sc, nil
}
func (sc *scramClient) clientFirstMessage() []byte {
sc.clientFirstMessageBare = []byte(fmt.Sprintf("n=,r=%s", sc.clientNonce))
return []byte(fmt.Sprintf("n,,%s", sc.clientFirstMessageBare))
}
func (sc *scramClient) recvServerFirstMessage(serverFirstMessage []byte) error {
sc.serverFirstMessage = serverFirstMessage
buf := serverFirstMessage
if !bytes.HasPrefix(buf, []byte("r=")) {
return errors.New("invalid SCRAM server-first-message received from server: did not include r=")
}
buf = buf[2:]
idx := bytes.IndexByte(buf, ',')
if idx == -1 {
return errors.New("invalid SCRAM server-first-message received from server: did not include s=")
}
sc.clientAndServerNonce = buf[:idx]
buf = buf[idx+1:]
if !bytes.HasPrefix(buf, []byte("s=")) {
return errors.New("invalid SCRAM server-first-message received from server: did not include s=")
}
buf = buf[2:]
idx = bytes.IndexByte(buf, ',')
if idx == -1 {
return errors.New("invalid SCRAM server-first-message received from server: did not include i=")
}
saltStr := buf[:idx]
buf = buf[idx+1:]
if !bytes.HasPrefix(buf, []byte("i=")) {
return errors.New("invalid SCRAM server-first-message received from server: did not include i=")
}
buf = buf[2:]
iterationsStr := buf
var err error
sc.salt, err = base64.StdEncoding.DecodeString(string(saltStr))
if err != nil {
return fmt.Errorf("invalid SCRAM salt received from server: %w", err)
}
sc.iterations, err = strconv.Atoi(string(iterationsStr))
if err != nil || sc.iterations <= 0 {
return fmt.Errorf("invalid SCRAM iteration count received from server: %w", err)
}
if !bytes.HasPrefix(sc.clientAndServerNonce, sc.clientNonce) {
return errors.New("invalid SCRAM nonce: did not start with client nonce")
}
if len(sc.clientAndServerNonce) <= len(sc.clientNonce) {
return errors.New("invalid SCRAM nonce: did not include server nonce")
}
return nil
}
func (sc *scramClient) clientFinalMessage() string {
clientFinalMessageWithoutProof := []byte(fmt.Sprintf("c=biws,r=%s", sc.clientAndServerNonce))
sc.saltedPassword = pbkdf2.Key([]byte(sc.password), sc.salt, sc.iterations, 32, sha256.New)
sc.authMessage = bytes.Join([][]byte{sc.clientFirstMessageBare, sc.serverFirstMessage, clientFinalMessageWithoutProof}, []byte(","))
clientProof := computeClientProof(sc.saltedPassword, sc.authMessage)
return fmt.Sprintf("%s,p=%s", clientFinalMessageWithoutProof, clientProof)
}
func (sc *scramClient) recvServerFinalMessage(serverFinalMessage []byte) error {
if !bytes.HasPrefix(serverFinalMessage, []byte("v=")) {
return errors.New("invalid SCRAM server-final-message received from server")
}
serverSignature := serverFinalMessage[2:]
if !hmac.Equal(serverSignature, computeServerSignature(sc.saltedPassword, sc.authMessage)) {
return errors.New("invalid SCRAM ServerSignature received from server")
}
return nil
}
func computeHMAC(key, msg []byte) []byte {
mac := hmac.New(sha256.New, key)
mac.Write(msg)
return mac.Sum(nil)
}
func computeClientProof(saltedPassword, authMessage []byte) []byte {
clientKey := computeHMAC(saltedPassword, []byte("Client Key"))
storedKey := sha256.Sum256(clientKey)
clientSignature := computeHMAC(storedKey[:], authMessage)
clientProof := make([]byte, len(clientSignature))
for i := 0; i < len(clientSignature); i++ {
clientProof[i] = clientKey[i] ^ clientSignature[i]
}
buf := make([]byte, base64.StdEncoding.EncodedLen(len(clientProof)))
base64.StdEncoding.Encode(buf, clientProof)
return buf
}
func computeServerSignature(saltedPassword, authMessage []byte) []byte {
serverKey := computeHMAC(saltedPassword, []byte("Server Key"))
serverSignature := computeHMAC(serverKey, authMessage)
buf := make([]byte, base64.StdEncoding.EncodedLen(len(serverSignature)))
base64.StdEncoding.Encode(buf, serverSignature)
return buf
}

953
vendor/github.com/jackc/pgx/v5/pgconn/config.go generated vendored Normal file
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@@ -0,0 +1,953 @@
package pgconn
import (
"context"
"crypto/tls"
"crypto/x509"
"encoding/pem"
"errors"
"fmt"
"io"
"math"
"net"
"net/url"
"os"
"path/filepath"
"strconv"
"strings"
"time"
"github.com/jackc/pgpassfile"
"github.com/jackc/pgservicefile"
"github.com/jackc/pgx/v5/pgconn/ctxwatch"
"github.com/jackc/pgx/v5/pgproto3"
)
type (
AfterConnectFunc func(ctx context.Context, pgconn *PgConn) error
ValidateConnectFunc func(ctx context.Context, pgconn *PgConn) error
GetSSLPasswordFunc func(ctx context.Context) string
)
// Config is the settings used to establish a connection to a PostgreSQL server. It must be created by [ParseConfig]. A
// manually initialized Config will cause ConnectConfig to panic.
type Config struct {
Host string // host (e.g. localhost) or absolute path to unix domain socket directory (e.g. /private/tmp)
Port uint16
Database string
User string
Password string
TLSConfig *tls.Config // nil disables TLS
ConnectTimeout time.Duration
DialFunc DialFunc // e.g. net.Dialer.DialContext
LookupFunc LookupFunc // e.g. net.Resolver.LookupHost
BuildFrontend BuildFrontendFunc
// BuildContextWatcherHandler is called to create a ContextWatcherHandler for a connection. The handler is called
// when a context passed to a PgConn method is canceled.
BuildContextWatcherHandler func(*PgConn) ctxwatch.Handler
RuntimeParams map[string]string // Run-time parameters to set on connection as session default values (e.g. search_path or application_name)
KerberosSrvName string
KerberosSpn string
Fallbacks []*FallbackConfig
SSLNegotiation string // sslnegotiation=postgres or sslnegotiation=direct
// ValidateConnect is called during a connection attempt after a successful authentication with the PostgreSQL server.
// It can be used to validate that the server is acceptable. If this returns an error the connection is closed and the next
// fallback config is tried. This allows implementing high availability behavior such as libpq does with target_session_attrs.
ValidateConnect ValidateConnectFunc
// AfterConnect is called after ValidateConnect. It can be used to set up the connection (e.g. Set session variables
// or prepare statements). If this returns an error the connection attempt fails.
AfterConnect AfterConnectFunc
// OnNotice is a callback function called when a notice response is received.
OnNotice NoticeHandler
// OnNotification is a callback function called when a notification from the LISTEN/NOTIFY system is received.
OnNotification NotificationHandler
// OnPgError is a callback function called when a Postgres error is received by the server. The default handler will close
// the connection on any FATAL errors. If you override this handler you should call the previously set handler or ensure
// that you close on FATAL errors by returning false.
OnPgError PgErrorHandler
createdByParseConfig bool // Used to enforce created by ParseConfig rule.
}
// ParseConfigOptions contains options that control how a config is built such as GetSSLPassword.
type ParseConfigOptions struct {
// GetSSLPassword gets the password to decrypt a SSL client certificate. This is analogous to the libpq function
// PQsetSSLKeyPassHook_OpenSSL.
GetSSLPassword GetSSLPasswordFunc
}
// Copy returns a deep copy of the config that is safe to use and modify.
// The only exception is the TLSConfig field:
// according to the tls.Config docs it must not be modified after creation.
func (c *Config) Copy() *Config {
newConf := new(Config)
*newConf = *c
if newConf.TLSConfig != nil {
newConf.TLSConfig = c.TLSConfig.Clone()
}
if newConf.RuntimeParams != nil {
newConf.RuntimeParams = make(map[string]string, len(c.RuntimeParams))
for k, v := range c.RuntimeParams {
newConf.RuntimeParams[k] = v
}
}
if newConf.Fallbacks != nil {
newConf.Fallbacks = make([]*FallbackConfig, len(c.Fallbacks))
for i, fallback := range c.Fallbacks {
newFallback := new(FallbackConfig)
*newFallback = *fallback
if newFallback.TLSConfig != nil {
newFallback.TLSConfig = fallback.TLSConfig.Clone()
}
newConf.Fallbacks[i] = newFallback
}
}
return newConf
}
// FallbackConfig is additional settings to attempt a connection with when the primary Config fails to establish a
// network connection. It is used for TLS fallback such as sslmode=prefer and high availability (HA) connections.
type FallbackConfig struct {
Host string // host (e.g. localhost) or path to unix domain socket directory (e.g. /private/tmp)
Port uint16
TLSConfig *tls.Config // nil disables TLS
}
// connectOneConfig is the configuration for a single attempt to connect to a single host.
type connectOneConfig struct {
network string
address string
originalHostname string // original hostname before resolving
tlsConfig *tls.Config // nil disables TLS
}
// isAbsolutePath checks if the provided value is an absolute path either
// beginning with a forward slash (as on Linux-based systems) or with a capital
// letter A-Z followed by a colon and a backslash, e.g., "C:\", (as on Windows).
func isAbsolutePath(path string) bool {
isWindowsPath := func(p string) bool {
if len(p) < 3 {
return false
}
drive := p[0]
colon := p[1]
backslash := p[2]
if drive >= 'A' && drive <= 'Z' && colon == ':' && backslash == '\\' {
return true
}
return false
}
return strings.HasPrefix(path, "/") || isWindowsPath(path)
}
// NetworkAddress converts a PostgreSQL host and port into network and address suitable for use with
// net.Dial.
func NetworkAddress(host string, port uint16) (network, address string) {
if isAbsolutePath(host) {
network = "unix"
address = filepath.Join(host, ".s.PGSQL.") + strconv.FormatInt(int64(port), 10)
} else {
network = "tcp"
address = net.JoinHostPort(host, strconv.Itoa(int(port)))
}
return network, address
}
// ParseConfig builds a *Config from connString with similar behavior to the PostgreSQL standard C library libpq. It
// uses the same defaults as libpq (e.g. port=5432) and understands most PG* environment variables. ParseConfig closely
// matches the parsing behavior of libpq. connString may either be in URL format or keyword = value format. See
// https://www.postgresql.org/docs/current/libpq-connect.html#LIBPQ-CONNSTRING for details. connString also may be empty
// to only read from the environment. If a password is not supplied it will attempt to read the .pgpass file.
//
// # Example Keyword/Value
// user=jack password=secret host=pg.example.com port=5432 dbname=mydb sslmode=verify-ca
//
// # Example URL
// postgres://jack:secret@pg.example.com:5432/mydb?sslmode=verify-ca
//
// The returned *Config may be modified. However, it is strongly recommended that any configuration that can be done
// through the connection string be done there. In particular the fields Host, Port, TLSConfig, and Fallbacks can be
// interdependent (e.g. TLSConfig needs knowledge of the host to validate the server certificate). These fields should
// not be modified individually. They should all be modified or all left unchanged.
//
// ParseConfig supports specifying multiple hosts in similar manner to libpq. Host and port may include comma separated
// values that will be tried in order. This can be used as part of a high availability system. See
// https://www.postgresql.org/docs/current/libpq-connect.html#LIBPQ-MULTIPLE-HOSTS for more information.
//
// # Example URL
// postgres://jack:secret@foo.example.com:5432,bar.example.com:5432/mydb
//
// ParseConfig currently recognizes the following environment variable and their parameter key word equivalents passed
// via database URL or keyword/value:
//
// PGHOST
// PGPORT
// PGDATABASE
// PGUSER
// PGPASSWORD
// PGPASSFILE
// PGSERVICE
// PGSERVICEFILE
// PGSSLMODE
// PGSSLCERT
// PGSSLKEY
// PGSSLROOTCERT
// PGSSLPASSWORD
// PGOPTIONS
// PGAPPNAME
// PGCONNECT_TIMEOUT
// PGTARGETSESSIONATTRS
// PGTZ
//
// See http://www.postgresql.org/docs/current/static/libpq-envars.html for details on the meaning of environment variables.
//
// See https://www.postgresql.org/docs/current/libpq-connect.html#LIBPQ-PARAMKEYWORDS for parameter key word names. They are
// usually but not always the environment variable name downcased and without the "PG" prefix.
//
// Important Security Notes:
//
// ParseConfig tries to match libpq behavior with regard to PGSSLMODE. This includes defaulting to "prefer" behavior if
// not set.
//
// See http://www.postgresql.org/docs/current/static/libpq-ssl.html#LIBPQ-SSL-PROTECTION for details on what level of
// security each sslmode provides.
//
// The sslmode "prefer" (the default), sslmode "allow", and multiple hosts are implemented via the Fallbacks field of
// the Config struct. If TLSConfig is manually changed it will not affect the fallbacks. For example, in the case of
// sslmode "prefer" this means it will first try the main Config settings which use TLS, then it will try the fallback
// which does not use TLS. This can lead to an unexpected unencrypted connection if the main TLS config is manually
// changed later but the unencrypted fallback is present. Ensure there are no stale fallbacks when manually setting
// TLSConfig.
//
// Other known differences with libpq:
//
// When multiple hosts are specified, libpq allows them to have different passwords set via the .pgpass file. pgconn
// does not.
//
// In addition, ParseConfig accepts the following options:
//
// - servicefile.
// libpq only reads servicefile from the PGSERVICEFILE environment variable. ParseConfig accepts servicefile as a
// part of the connection string.
func ParseConfig(connString string) (*Config, error) {
var parseConfigOptions ParseConfigOptions
return ParseConfigWithOptions(connString, parseConfigOptions)
}
// ParseConfigWithOptions builds a *Config from connString and options with similar behavior to the PostgreSQL standard
// C library libpq. options contains settings that cannot be specified in a connString such as providing a function to
// get the SSL password.
func ParseConfigWithOptions(connString string, options ParseConfigOptions) (*Config, error) {
defaultSettings := defaultSettings()
envSettings := parseEnvSettings()
connStringSettings := make(map[string]string)
if connString != "" {
var err error
// connString may be a database URL or in PostgreSQL keyword/value format
if strings.HasPrefix(connString, "postgres://") || strings.HasPrefix(connString, "postgresql://") {
connStringSettings, err = parseURLSettings(connString)
if err != nil {
return nil, &ParseConfigError{ConnString: connString, msg: "failed to parse as URL", err: err}
}
} else {
connStringSettings, err = parseKeywordValueSettings(connString)
if err != nil {
return nil, &ParseConfigError{ConnString: connString, msg: "failed to parse as keyword/value", err: err}
}
}
}
settings := mergeSettings(defaultSettings, envSettings, connStringSettings)
if service, present := settings["service"]; present {
serviceSettings, err := parseServiceSettings(settings["servicefile"], service)
if err != nil {
return nil, &ParseConfigError{ConnString: connString, msg: "failed to read service", err: err}
}
settings = mergeSettings(defaultSettings, envSettings, serviceSettings, connStringSettings)
}
config := &Config{
createdByParseConfig: true,
Database: settings["database"],
User: settings["user"],
Password: settings["password"],
RuntimeParams: make(map[string]string),
BuildFrontend: func(r io.Reader, w io.Writer) *pgproto3.Frontend {
return pgproto3.NewFrontend(r, w)
},
BuildContextWatcherHandler: func(pgConn *PgConn) ctxwatch.Handler {
return &DeadlineContextWatcherHandler{Conn: pgConn.conn}
},
OnPgError: func(_ *PgConn, pgErr *PgError) bool {
// we want to automatically close any fatal errors
if strings.EqualFold(pgErr.Severity, "FATAL") {
return false
}
return true
},
}
if connectTimeoutSetting, present := settings["connect_timeout"]; present {
connectTimeout, err := parseConnectTimeoutSetting(connectTimeoutSetting)
if err != nil {
return nil, &ParseConfigError{ConnString: connString, msg: "invalid connect_timeout", err: err}
}
config.ConnectTimeout = connectTimeout
config.DialFunc = makeConnectTimeoutDialFunc(connectTimeout)
} else {
defaultDialer := makeDefaultDialer()
config.DialFunc = defaultDialer.DialContext
}
config.LookupFunc = makeDefaultResolver().LookupHost
notRuntimeParams := map[string]struct{}{
"host": {},
"port": {},
"database": {},
"user": {},
"password": {},
"passfile": {},
"connect_timeout": {},
"sslmode": {},
"sslkey": {},
"sslcert": {},
"sslrootcert": {},
"sslnegotiation": {},
"sslpassword": {},
"sslsni": {},
"krbspn": {},
"krbsrvname": {},
"target_session_attrs": {},
"service": {},
"servicefile": {},
}
// Adding kerberos configuration
if _, present := settings["krbsrvname"]; present {
config.KerberosSrvName = settings["krbsrvname"]
}
if _, present := settings["krbspn"]; present {
config.KerberosSpn = settings["krbspn"]
}
for k, v := range settings {
if _, present := notRuntimeParams[k]; present {
continue
}
config.RuntimeParams[k] = v
}
fallbacks := []*FallbackConfig{}
hosts := strings.Split(settings["host"], ",")
ports := strings.Split(settings["port"], ",")
for i, host := range hosts {
var portStr string
if i < len(ports) {
portStr = ports[i]
} else {
portStr = ports[0]
}
port, err := parsePort(portStr)
if err != nil {
return nil, &ParseConfigError{ConnString: connString, msg: "invalid port", err: err}
}
var tlsConfigs []*tls.Config
// Ignore TLS settings if Unix domain socket like libpq
if network, _ := NetworkAddress(host, port); network == "unix" {
tlsConfigs = append(tlsConfigs, nil)
} else {
var err error
tlsConfigs, err = configTLS(settings, host, options)
if err != nil {
return nil, &ParseConfigError{ConnString: connString, msg: "failed to configure TLS", err: err}
}
}
for _, tlsConfig := range tlsConfigs {
fallbacks = append(fallbacks, &FallbackConfig{
Host: host,
Port: port,
TLSConfig: tlsConfig,
})
}
}
config.Host = fallbacks[0].Host
config.Port = fallbacks[0].Port
config.TLSConfig = fallbacks[0].TLSConfig
config.Fallbacks = fallbacks[1:]
config.SSLNegotiation = settings["sslnegotiation"]
passfile, err := pgpassfile.ReadPassfile(settings["passfile"])
if err == nil {
if config.Password == "" {
host := config.Host
if network, _ := NetworkAddress(config.Host, config.Port); network == "unix" {
host = "localhost"
}
config.Password = passfile.FindPassword(host, strconv.Itoa(int(config.Port)), config.Database, config.User)
}
}
switch tsa := settings["target_session_attrs"]; tsa {
case "read-write":
config.ValidateConnect = ValidateConnectTargetSessionAttrsReadWrite
case "read-only":
config.ValidateConnect = ValidateConnectTargetSessionAttrsReadOnly
case "primary":
config.ValidateConnect = ValidateConnectTargetSessionAttrsPrimary
case "standby":
config.ValidateConnect = ValidateConnectTargetSessionAttrsStandby
case "prefer-standby":
config.ValidateConnect = ValidateConnectTargetSessionAttrsPreferStandby
case "any":
// do nothing
default:
return nil, &ParseConfigError{ConnString: connString, msg: fmt.Sprintf("unknown target_session_attrs value: %v", tsa)}
}
return config, nil
}
func mergeSettings(settingSets ...map[string]string) map[string]string {
settings := make(map[string]string)
for _, s2 := range settingSets {
for k, v := range s2 {
settings[k] = v
}
}
return settings
}
func parseEnvSettings() map[string]string {
settings := make(map[string]string)
nameMap := map[string]string{
"PGHOST": "host",
"PGPORT": "port",
"PGDATABASE": "database",
"PGUSER": "user",
"PGPASSWORD": "password",
"PGPASSFILE": "passfile",
"PGAPPNAME": "application_name",
"PGCONNECT_TIMEOUT": "connect_timeout",
"PGSSLMODE": "sslmode",
"PGSSLKEY": "sslkey",
"PGSSLCERT": "sslcert",
"PGSSLSNI": "sslsni",
"PGSSLROOTCERT": "sslrootcert",
"PGSSLPASSWORD": "sslpassword",
"PGSSLNEGOTIATION": "sslnegotiation",
"PGTARGETSESSIONATTRS": "target_session_attrs",
"PGSERVICE": "service",
"PGSERVICEFILE": "servicefile",
"PGTZ": "timezone",
"PGOPTIONS": "options",
}
for envname, realname := range nameMap {
value := os.Getenv(envname)
if value != "" {
settings[realname] = value
}
}
return settings
}
func parseURLSettings(connString string) (map[string]string, error) {
settings := make(map[string]string)
parsedURL, err := url.Parse(connString)
if err != nil {
if urlErr := new(url.Error); errors.As(err, &urlErr) {
return nil, urlErr.Err
}
return nil, err
}
if parsedURL.User != nil {
settings["user"] = parsedURL.User.Username()
if password, present := parsedURL.User.Password(); present {
settings["password"] = password
}
}
// Handle multiple host:port's in url.Host by splitting them into host,host,host and port,port,port.
var hosts []string
var ports []string
for _, host := range strings.Split(parsedURL.Host, ",") {
if host == "" {
continue
}
if isIPOnly(host) {
hosts = append(hosts, strings.Trim(host, "[]"))
continue
}
h, p, err := net.SplitHostPort(host)
if err != nil {
return nil, fmt.Errorf("failed to split host:port in '%s', err: %w", host, err)
}
if h != "" {
hosts = append(hosts, h)
}
if p != "" {
ports = append(ports, p)
}
}
if len(hosts) > 0 {
settings["host"] = strings.Join(hosts, ",")
}
if len(ports) > 0 {
settings["port"] = strings.Join(ports, ",")
}
database := strings.TrimLeft(parsedURL.Path, "/")
if database != "" {
settings["database"] = database
}
nameMap := map[string]string{
"dbname": "database",
}
for k, v := range parsedURL.Query() {
if k2, present := nameMap[k]; present {
k = k2
}
settings[k] = v[0]
}
return settings, nil
}
func isIPOnly(host string) bool {
return net.ParseIP(strings.Trim(host, "[]")) != nil || !strings.Contains(host, ":")
}
var asciiSpace = [256]uint8{'\t': 1, '\n': 1, '\v': 1, '\f': 1, '\r': 1, ' ': 1}
func parseKeywordValueSettings(s string) (map[string]string, error) {
settings := make(map[string]string)
nameMap := map[string]string{
"dbname": "database",
}
for len(s) > 0 {
var key, val string
eqIdx := strings.IndexRune(s, '=')
if eqIdx < 0 {
return nil, errors.New("invalid keyword/value")
}
key = strings.Trim(s[:eqIdx], " \t\n\r\v\f")
s = strings.TrimLeft(s[eqIdx+1:], " \t\n\r\v\f")
if len(s) == 0 {
} else if s[0] != '\'' {
end := 0
for ; end < len(s); end++ {
if asciiSpace[s[end]] == 1 {
break
}
if s[end] == '\\' {
end++
if end == len(s) {
return nil, errors.New("invalid backslash")
}
}
}
val = strings.Replace(strings.Replace(s[:end], "\\\\", "\\", -1), "\\'", "'", -1)
if end == len(s) {
s = ""
} else {
s = s[end+1:]
}
} else { // quoted string
s = s[1:]
end := 0
for ; end < len(s); end++ {
if s[end] == '\'' {
break
}
if s[end] == '\\' {
end++
}
}
if end == len(s) {
return nil, errors.New("unterminated quoted string in connection info string")
}
val = strings.Replace(strings.Replace(s[:end], "\\\\", "\\", -1), "\\'", "'", -1)
if end == len(s) {
s = ""
} else {
s = s[end+1:]
}
}
if k, ok := nameMap[key]; ok {
key = k
}
if key == "" {
return nil, errors.New("invalid keyword/value")
}
settings[key] = val
}
return settings, nil
}
func parseServiceSettings(servicefilePath, serviceName string) (map[string]string, error) {
servicefile, err := pgservicefile.ReadServicefile(servicefilePath)
if err != nil {
return nil, fmt.Errorf("failed to read service file: %v", servicefilePath)
}
service, err := servicefile.GetService(serviceName)
if err != nil {
return nil, fmt.Errorf("unable to find service: %v", serviceName)
}
nameMap := map[string]string{
"dbname": "database",
}
settings := make(map[string]string, len(service.Settings))
for k, v := range service.Settings {
if k2, present := nameMap[k]; present {
k = k2
}
settings[k] = v
}
return settings, nil
}
// configTLS uses libpq's TLS parameters to construct []*tls.Config. It is
// necessary to allow returning multiple TLS configs as sslmode "allow" and
// "prefer" allow fallback.
func configTLS(settings map[string]string, thisHost string, parseConfigOptions ParseConfigOptions) ([]*tls.Config, error) {
host := thisHost
sslmode := settings["sslmode"]
sslrootcert := settings["sslrootcert"]
sslcert := settings["sslcert"]
sslkey := settings["sslkey"]
sslpassword := settings["sslpassword"]
sslsni := settings["sslsni"]
sslnegotiation := settings["sslnegotiation"]
// Match libpq default behavior
if sslmode == "" {
sslmode = "prefer"
}
if sslsni == "" {
sslsni = "1"
}
tlsConfig := &tls.Config{}
if sslnegotiation == "direct" {
tlsConfig.NextProtos = []string{"postgresql"}
if sslmode == "prefer" {
sslmode = "require"
}
}
if sslrootcert != "" {
var caCertPool *x509.CertPool
if sslrootcert == "system" {
var err error
caCertPool, err = x509.SystemCertPool()
if err != nil {
return nil, fmt.Errorf("unable to load system certificate pool: %w", err)
}
sslmode = "verify-full"
} else {
caCertPool = x509.NewCertPool()
caPath := sslrootcert
caCert, err := os.ReadFile(caPath)
if err != nil {
return nil, fmt.Errorf("unable to read CA file: %w", err)
}
if !caCertPool.AppendCertsFromPEM(caCert) {
return nil, errors.New("unable to add CA to cert pool")
}
}
tlsConfig.RootCAs = caCertPool
tlsConfig.ClientCAs = caCertPool
}
switch sslmode {
case "disable":
return []*tls.Config{nil}, nil
case "allow", "prefer":
tlsConfig.InsecureSkipVerify = true
case "require":
// According to PostgreSQL documentation, if a root CA file exists,
// the behavior of sslmode=require should be the same as that of verify-ca
//
// See https://www.postgresql.org/docs/current/libpq-ssl.html
if sslrootcert != "" {
goto nextCase
}
tlsConfig.InsecureSkipVerify = true
break
nextCase:
fallthrough
case "verify-ca":
// Don't perform the default certificate verification because it
// will verify the hostname. Instead, verify the server's
// certificate chain ourselves in VerifyPeerCertificate and
// ignore the server name. This emulates libpq's verify-ca
// behavior.
//
// See https://github.com/golang/go/issues/21971#issuecomment-332693931
// and https://pkg.go.dev/crypto/tls?tab=doc#example-Config-VerifyPeerCertificate
// for more info.
tlsConfig.InsecureSkipVerify = true
tlsConfig.VerifyPeerCertificate = func(certificates [][]byte, _ [][]*x509.Certificate) error {
certs := make([]*x509.Certificate, len(certificates))
for i, asn1Data := range certificates {
cert, err := x509.ParseCertificate(asn1Data)
if err != nil {
return errors.New("failed to parse certificate from server: " + err.Error())
}
certs[i] = cert
}
// Leave DNSName empty to skip hostname verification.
opts := x509.VerifyOptions{
Roots: tlsConfig.RootCAs,
Intermediates: x509.NewCertPool(),
}
// Skip the first cert because it's the leaf. All others
// are intermediates.
for _, cert := range certs[1:] {
opts.Intermediates.AddCert(cert)
}
_, err := certs[0].Verify(opts)
return err
}
case "verify-full":
tlsConfig.ServerName = host
default:
return nil, errors.New("sslmode is invalid")
}
if (sslcert != "" && sslkey == "") || (sslcert == "" && sslkey != "") {
return nil, errors.New(`both "sslcert" and "sslkey" are required`)
}
if sslcert != "" && sslkey != "" {
buf, err := os.ReadFile(sslkey)
if err != nil {
return nil, fmt.Errorf("unable to read sslkey: %w", err)
}
block, _ := pem.Decode(buf)
if block == nil {
return nil, errors.New("failed to decode sslkey")
}
var pemKey []byte
var decryptedKey []byte
var decryptedError error
// If PEM is encrypted, attempt to decrypt using pass phrase
if x509.IsEncryptedPEMBlock(block) {
// Attempt decryption with pass phrase
// NOTE: only supports RSA (PKCS#1)
if sslpassword != "" {
decryptedKey, decryptedError = x509.DecryptPEMBlock(block, []byte(sslpassword))
}
// if sslpassword not provided or has decryption error when use it
// try to find sslpassword with callback function
if sslpassword == "" || decryptedError != nil {
if parseConfigOptions.GetSSLPassword != nil {
sslpassword = parseConfigOptions.GetSSLPassword(context.Background())
}
if sslpassword == "" {
return nil, fmt.Errorf("unable to find sslpassword")
}
}
decryptedKey, decryptedError = x509.DecryptPEMBlock(block, []byte(sslpassword))
// Should we also provide warning for PKCS#1 needed?
if decryptedError != nil {
return nil, fmt.Errorf("unable to decrypt key: %w", err)
}
pemBytes := pem.Block{
Type: "RSA PRIVATE KEY",
Bytes: decryptedKey,
}
pemKey = pem.EncodeToMemory(&pemBytes)
} else {
pemKey = pem.EncodeToMemory(block)
}
certfile, err := os.ReadFile(sslcert)
if err != nil {
return nil, fmt.Errorf("unable to read cert: %w", err)
}
cert, err := tls.X509KeyPair(certfile, pemKey)
if err != nil {
return nil, fmt.Errorf("unable to load cert: %w", err)
}
tlsConfig.Certificates = []tls.Certificate{cert}
}
// Set Server Name Indication (SNI), if enabled by connection parameters.
// Per RFC 6066, do not set it if the host is a literal IP address (IPv4
// or IPv6).
if sslsni == "1" && net.ParseIP(host) == nil {
tlsConfig.ServerName = host
}
switch sslmode {
case "allow":
return []*tls.Config{nil, tlsConfig}, nil
case "prefer":
return []*tls.Config{tlsConfig, nil}, nil
case "require", "verify-ca", "verify-full":
return []*tls.Config{tlsConfig}, nil
default:
panic("BUG: bad sslmode should already have been caught")
}
}
func parsePort(s string) (uint16, error) {
port, err := strconv.ParseUint(s, 10, 16)
if err != nil {
return 0, err
}
if port < 1 || port > math.MaxUint16 {
return 0, errors.New("outside range")
}
return uint16(port), nil
}
func makeDefaultDialer() *net.Dialer {
// rely on GOLANG KeepAlive settings
return &net.Dialer{}
}
func makeDefaultResolver() *net.Resolver {
return net.DefaultResolver
}
func parseConnectTimeoutSetting(s string) (time.Duration, error) {
timeout, err := strconv.ParseInt(s, 10, 64)
if err != nil {
return 0, err
}
if timeout < 0 {
return 0, errors.New("negative timeout")
}
return time.Duration(timeout) * time.Second, nil
}
func makeConnectTimeoutDialFunc(timeout time.Duration) DialFunc {
d := makeDefaultDialer()
d.Timeout = timeout
return d.DialContext
}
// ValidateConnectTargetSessionAttrsReadWrite is a ValidateConnectFunc that implements libpq compatible
// target_session_attrs=read-write.
func ValidateConnectTargetSessionAttrsReadWrite(ctx context.Context, pgConn *PgConn) error {
result, err := pgConn.Exec(ctx, "show transaction_read_only").ReadAll()
if err != nil {
return err
}
if string(result[0].Rows[0][0]) == "on" {
return errors.New("read only connection")
}
return nil
}
// ValidateConnectTargetSessionAttrsReadOnly is a ValidateConnectFunc that implements libpq compatible
// target_session_attrs=read-only.
func ValidateConnectTargetSessionAttrsReadOnly(ctx context.Context, pgConn *PgConn) error {
result, err := pgConn.Exec(ctx, "show transaction_read_only").ReadAll()
if err != nil {
return err
}
if string(result[0].Rows[0][0]) != "on" {
return errors.New("connection is not read only")
}
return nil
}
// ValidateConnectTargetSessionAttrsStandby is a ValidateConnectFunc that implements libpq compatible
// target_session_attrs=standby.
func ValidateConnectTargetSessionAttrsStandby(ctx context.Context, pgConn *PgConn) error {
result, err := pgConn.Exec(ctx, "select pg_is_in_recovery()").ReadAll()
if err != nil {
return err
}
if string(result[0].Rows[0][0]) != "t" {
return errors.New("server is not in hot standby mode")
}
return nil
}
// ValidateConnectTargetSessionAttrsPrimary is a ValidateConnectFunc that implements libpq compatible
// target_session_attrs=primary.
func ValidateConnectTargetSessionAttrsPrimary(ctx context.Context, pgConn *PgConn) error {
result, err := pgConn.Exec(ctx, "select pg_is_in_recovery()").ReadAll()
if err != nil {
return err
}
if string(result[0].Rows[0][0]) == "t" {
return errors.New("server is in standby mode")
}
return nil
}
// ValidateConnectTargetSessionAttrsPreferStandby is a ValidateConnectFunc that implements libpq compatible
// target_session_attrs=prefer-standby.
func ValidateConnectTargetSessionAttrsPreferStandby(ctx context.Context, pgConn *PgConn) error {
result, err := pgConn.Exec(ctx, "select pg_is_in_recovery()").ReadAll()
if err != nil {
return err
}
if string(result[0].Rows[0][0]) != "t" {
return &NotPreferredError{err: errors.New("server is not in hot standby mode")}
}
return nil
}

80
vendor/github.com/jackc/pgx/v5/pgconn/ctxwatch/context_watcher.go generated vendored Normal file
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package ctxwatch
import (
"context"
"sync"
)
// ContextWatcher watches a context and performs an action when the context is canceled. It can watch one context at a
// time.
type ContextWatcher struct {
handler Handler
unwatchChan chan struct{}
lock sync.Mutex
watchInProgress bool
onCancelWasCalled bool
}
// NewContextWatcher returns a ContextWatcher. onCancel will be called when a watched context is canceled.
// OnUnwatchAfterCancel will be called when Unwatch is called and the watched context had already been canceled and
// onCancel called.
func NewContextWatcher(handler Handler) *ContextWatcher {
cw := &ContextWatcher{
handler: handler,
unwatchChan: make(chan struct{}),
}
return cw
}
// Watch starts watching ctx. If ctx is canceled then the onCancel function passed to NewContextWatcher will be called.
func (cw *ContextWatcher) Watch(ctx context.Context) {
cw.lock.Lock()
defer cw.lock.Unlock()
if cw.watchInProgress {
panic("Watch already in progress")
}
cw.onCancelWasCalled = false
if ctx.Done() != nil {
cw.watchInProgress = true
go func() {
select {
case <-ctx.Done():
cw.handler.HandleCancel(ctx)
cw.onCancelWasCalled = true
<-cw.unwatchChan
case <-cw.unwatchChan:
}
}()
} else {
cw.watchInProgress = false
}
}
// Unwatch stops watching the previously watched context. If the onCancel function passed to NewContextWatcher was
// called then onUnwatchAfterCancel will also be called.
func (cw *ContextWatcher) Unwatch() {
cw.lock.Lock()
defer cw.lock.Unlock()
if cw.watchInProgress {
cw.unwatchChan <- struct{}{}
if cw.onCancelWasCalled {
cw.handler.HandleUnwatchAfterCancel()
}
cw.watchInProgress = false
}
}
type Handler interface {
// HandleCancel is called when the context that a ContextWatcher is currently watching is canceled. canceledCtx is the
// context that was canceled.
HandleCancel(canceledCtx context.Context)
// HandleUnwatchAfterCancel is called when a ContextWatcher that called HandleCancel on this Handler is unwatched.
HandleUnwatchAfterCancel()
}

63
vendor/github.com/jackc/pgx/v5/pgconn/defaults.go generated vendored Normal file
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//go:build !windows
// +build !windows
package pgconn
import (
"os"
"os/user"
"path/filepath"
)
func defaultSettings() map[string]string {
settings := make(map[string]string)
settings["host"] = defaultHost()
settings["port"] = "5432"
// Default to the OS user name. Purposely ignoring err getting user name from
// OS. The client application will simply have to specify the user in that
// case (which they typically will be doing anyway).
user, err := user.Current()
if err == nil {
settings["user"] = user.Username
settings["passfile"] = filepath.Join(user.HomeDir, ".pgpass")
settings["servicefile"] = filepath.Join(user.HomeDir, ".pg_service.conf")
sslcert := filepath.Join(user.HomeDir, ".postgresql", "postgresql.crt")
sslkey := filepath.Join(user.HomeDir, ".postgresql", "postgresql.key")
if _, err := os.Stat(sslcert); err == nil {
if _, err := os.Stat(sslkey); err == nil {
// Both the cert and key must be present to use them, or do not use either
settings["sslcert"] = sslcert
settings["sslkey"] = sslkey
}
}
sslrootcert := filepath.Join(user.HomeDir, ".postgresql", "root.crt")
if _, err := os.Stat(sslrootcert); err == nil {
settings["sslrootcert"] = sslrootcert
}
}
settings["target_session_attrs"] = "any"
return settings
}
// defaultHost attempts to mimic libpq's default host. libpq uses the default unix socket location on *nix and localhost
// on Windows. The default socket location is compiled into libpq. Since pgx does not have access to that default it
// checks the existence of common locations.
func defaultHost() string {
candidatePaths := []string{
"/var/run/postgresql", // Debian
"/private/tmp", // OSX - homebrew
"/tmp", // standard PostgreSQL
}
for _, path := range candidatePaths {
if _, err := os.Stat(path); err == nil {
return path
}
}
return "localhost"
}

57
vendor/github.com/jackc/pgx/v5/pgconn/defaults_windows.go generated vendored Normal file
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package pgconn
import (
"os"
"os/user"
"path/filepath"
"strings"
)
func defaultSettings() map[string]string {
settings := make(map[string]string)
settings["host"] = defaultHost()
settings["port"] = "5432"
// Default to the OS user name. Purposely ignoring err getting user name from
// OS. The client application will simply have to specify the user in that
// case (which they typically will be doing anyway).
user, err := user.Current()
appData := os.Getenv("APPDATA")
if err == nil {
// Windows gives us the username here as `DOMAIN\user` or `LOCALPCNAME\user`,
// but the libpq default is just the `user` portion, so we strip off the first part.
username := user.Username
if strings.Contains(username, "\\") {
username = username[strings.LastIndex(username, "\\")+1:]
}
settings["user"] = username
settings["passfile"] = filepath.Join(appData, "postgresql", "pgpass.conf")
settings["servicefile"] = filepath.Join(user.HomeDir, ".pg_service.conf")
sslcert := filepath.Join(appData, "postgresql", "postgresql.crt")
sslkey := filepath.Join(appData, "postgresql", "postgresql.key")
if _, err := os.Stat(sslcert); err == nil {
if _, err := os.Stat(sslkey); err == nil {
// Both the cert and key must be present to use them, or do not use either
settings["sslcert"] = sslcert
settings["sslkey"] = sslkey
}
}
sslrootcert := filepath.Join(appData, "postgresql", "root.crt")
if _, err := os.Stat(sslrootcert); err == nil {
settings["sslrootcert"] = sslrootcert
}
}
settings["target_session_attrs"] = "any"
return settings
}
// defaultHost attempts to mimic libpq's default host. libpq uses the default unix socket location on *nix and localhost
// on Windows. The default socket location is compiled into libpq. Since pgx does not have access to that default it
// checks the existence of common locations.
func defaultHost() string {
return "localhost"
}

38
vendor/github.com/jackc/pgx/v5/pgconn/doc.go generated vendored Normal file
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// Package pgconn is a low-level PostgreSQL database driver.
/*
pgconn provides lower level access to a PostgreSQL connection than a database/sql or pgx connection. It operates at
nearly the same level is the C library libpq.
Establishing a Connection
Use Connect to establish a connection. It accepts a connection string in URL or keyword/value format and will read the
environment for libpq style environment variables.
Executing a Query
ExecParams and ExecPrepared execute a single query. They return readers that iterate over each row. The Read method
reads all rows into memory.
Executing Multiple Queries in a Single Round Trip
Exec and ExecBatch can execute multiple queries in a single round trip. They return readers that iterate over each query
result. The ReadAll method reads all query results into memory.
Pipeline Mode
Pipeline mode allows sending queries without having read the results of previously sent queries. It allows control of
exactly how many and when network round trips occur.
Context Support
All potentially blocking operations take a context.Context. The default behavior when a context is canceled is for the
method to immediately return. In most circumstances, this will also close the underlying connection. This behavior can
be customized by using BuildContextWatcherHandler on the Config to create a ctxwatch.Handler with different behavior.
This can be especially useful when queries that are frequently canceled and the overhead of creating new connections is
a problem. DeadlineContextWatcherHandler and CancelRequestContextWatcherHandler can be used to introduce a delay before
interrupting the query in such a way as to close the connection.
The CancelRequest method may be used to request the PostgreSQL server cancel an in-progress query without forcing the
client to abort.
*/
package pgconn

256
vendor/github.com/jackc/pgx/v5/pgconn/errors.go generated vendored Normal file
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package pgconn
import (
"context"
"errors"
"fmt"
"net"
"net/url"
"regexp"
"strings"
)
// SafeToRetry checks if the err is guaranteed to have occurred before sending any data to the server.
func SafeToRetry(err error) bool {
var retryableErr interface{ SafeToRetry() bool }
if errors.As(err, &retryableErr) {
return retryableErr.SafeToRetry()
}
return false
}
// Timeout checks if err was caused by a timeout. To be specific, it is true if err was caused within pgconn by a
// context.DeadlineExceeded or an implementer of net.Error where Timeout() is true.
func Timeout(err error) bool {
var timeoutErr *errTimeout
return errors.As(err, &timeoutErr)
}
// PgError represents an error reported by the PostgreSQL server. See
// http://www.postgresql.org/docs/current/static/protocol-error-fields.html for
// detailed field description.
type PgError struct {
Severity string
SeverityUnlocalized string
Code string
Message string
Detail string
Hint string
Position int32
InternalPosition int32
InternalQuery string
Where string
SchemaName string
TableName string
ColumnName string
DataTypeName string
ConstraintName string
File string
Line int32
Routine string
}
func (pe *PgError) Error() string {
return pe.Severity + ": " + pe.Message + " (SQLSTATE " + pe.Code + ")"
}
// SQLState returns the SQLState of the error.
func (pe *PgError) SQLState() string {
return pe.Code
}
// ConnectError is the error returned when a connection attempt fails.
type ConnectError struct {
Config *Config // The configuration that was used in the connection attempt.
err error
}
func (e *ConnectError) Error() string {
prefix := fmt.Sprintf("failed to connect to `user=%s database=%s`:", e.Config.User, e.Config.Database)
details := e.err.Error()
if strings.Contains(details, "\n") {
return prefix + "\n\t" + strings.ReplaceAll(details, "\n", "\n\t")
} else {
return prefix + " " + details
}
}
func (e *ConnectError) Unwrap() error {
return e.err
}
type perDialConnectError struct {
address string
originalHostname string
err error
}
func (e *perDialConnectError) Error() string {
return fmt.Sprintf("%s (%s): %s", e.address, e.originalHostname, e.err.Error())
}
func (e *perDialConnectError) Unwrap() error {
return e.err
}
type connLockError struct {
status string
}
func (e *connLockError) SafeToRetry() bool {
return true // a lock failure by definition happens before the connection is used.
}
func (e *connLockError) Error() string {
return e.status
}
// ParseConfigError is the error returned when a connection string cannot be parsed.
type ParseConfigError struct {
ConnString string // The connection string that could not be parsed.
msg string
err error
}
func NewParseConfigError(conn, msg string, err error) error {
return &ParseConfigError{
ConnString: conn,
msg: msg,
err: err,
}
}
func (e *ParseConfigError) Error() string {
// Now that ParseConfigError is public and ConnString is available to the developer, perhaps it would be better only
// return a static string. That would ensure that the error message cannot leak a password. The ConnString field would
// allow access to the original string if desired and Unwrap would allow access to the underlying error.
connString := redactPW(e.ConnString)
if e.err == nil {
return fmt.Sprintf("cannot parse `%s`: %s", connString, e.msg)
}
return fmt.Sprintf("cannot parse `%s`: %s (%s)", connString, e.msg, e.err.Error())
}
func (e *ParseConfigError) Unwrap() error {
return e.err
}
func normalizeTimeoutError(ctx context.Context, err error) error {
var netErr net.Error
if errors.As(err, &netErr) && netErr.Timeout() {
if ctx.Err() == context.Canceled {
// Since the timeout was caused by a context cancellation, the actual error is context.Canceled not the timeout error.
return context.Canceled
} else if ctx.Err() == context.DeadlineExceeded {
return &errTimeout{err: ctx.Err()}
} else {
return &errTimeout{err: netErr}
}
}
return err
}
type pgconnError struct {
msg string
err error
safeToRetry bool
}
func (e *pgconnError) Error() string {
if e.msg == "" {
return e.err.Error()
}
if e.err == nil {
return e.msg
}
return fmt.Sprintf("%s: %s", e.msg, e.err.Error())
}
func (e *pgconnError) SafeToRetry() bool {
return e.safeToRetry
}
func (e *pgconnError) Unwrap() error {
return e.err
}
// errTimeout occurs when an error was caused by a timeout. Specifically, it wraps an error which is
// context.Canceled, context.DeadlineExceeded, or an implementer of net.Error where Timeout() is true.
type errTimeout struct {
err error
}
func (e *errTimeout) Error() string {
return fmt.Sprintf("timeout: %s", e.err.Error())
}
func (e *errTimeout) SafeToRetry() bool {
return SafeToRetry(e.err)
}
func (e *errTimeout) Unwrap() error {
return e.err
}
type contextAlreadyDoneError struct {
err error
}
func (e *contextAlreadyDoneError) Error() string {
return fmt.Sprintf("context already done: %s", e.err.Error())
}
func (e *contextAlreadyDoneError) SafeToRetry() bool {
return true
}
func (e *contextAlreadyDoneError) Unwrap() error {
return e.err
}
// newContextAlreadyDoneError double-wraps a context error in `contextAlreadyDoneError` and `errTimeout`.
func newContextAlreadyDoneError(ctx context.Context) (err error) {
return &errTimeout{&contextAlreadyDoneError{err: ctx.Err()}}
}
func redactPW(connString string) string {
if strings.HasPrefix(connString, "postgres://") || strings.HasPrefix(connString, "postgresql://") {
if u, err := url.Parse(connString); err == nil {
return redactURL(u)
}
}
quotedKV := regexp.MustCompile(`password='[^']*'`)
connString = quotedKV.ReplaceAllLiteralString(connString, "password=xxxxx")
plainKV := regexp.MustCompile(`password=[^ ]*`)
connString = plainKV.ReplaceAllLiteralString(connString, "password=xxxxx")
brokenURL := regexp.MustCompile(`:[^:@]+?@`)
connString = brokenURL.ReplaceAllLiteralString(connString, ":xxxxxx@")
return connString
}
func redactURL(u *url.URL) string {
if u == nil {
return ""
}
if _, pwSet := u.User.Password(); pwSet {
u.User = url.UserPassword(u.User.Username(), "xxxxx")
}
return u.String()
}
type NotPreferredError struct {
err error
safeToRetry bool
}
func (e *NotPreferredError) Error() string {
return fmt.Sprintf("standby server not found: %s", e.err.Error())
}
func (e *NotPreferredError) SafeToRetry() bool {
return e.safeToRetry
}
func (e *NotPreferredError) Unwrap() error {
return e.err
}

139
vendor/github.com/jackc/pgx/v5/pgconn/internal/bgreader/bgreader.go generated vendored Normal file
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// Package bgreader provides a io.Reader that can optionally buffer reads in the background.
package bgreader
import (
"io"
"sync"
"github.com/jackc/pgx/v5/internal/iobufpool"
)
const (
StatusStopped = iota
StatusRunning
StatusStopping
)
// BGReader is an io.Reader that can optionally buffer reads in the background. It is safe for concurrent use.
type BGReader struct {
r io.Reader
cond *sync.Cond
status int32
readResults []readResult
}
type readResult struct {
buf *[]byte
err error
}
// Start starts the backgrounder reader. If the background reader is already running this is a no-op. The background
// reader will stop automatically when the underlying reader returns an error.
func (r *BGReader) Start() {
r.cond.L.Lock()
defer r.cond.L.Unlock()
switch r.status {
case StatusStopped:
r.status = StatusRunning
go r.bgRead()
case StatusRunning:
// no-op
case StatusStopping:
r.status = StatusRunning
}
}
// Stop tells the background reader to stop after the in progress Read returns. It is safe to call Stop when the
// background reader is not running.
func (r *BGReader) Stop() {
r.cond.L.Lock()
defer r.cond.L.Unlock()
switch r.status {
case StatusStopped:
// no-op
case StatusRunning:
r.status = StatusStopping
case StatusStopping:
// no-op
}
}
// Status returns the current status of the background reader.
func (r *BGReader) Status() int32 {
r.cond.L.Lock()
defer r.cond.L.Unlock()
return r.status
}
func (r *BGReader) bgRead() {
keepReading := true
for keepReading {
buf := iobufpool.Get(8192)
n, err := r.r.Read(*buf)
*buf = (*buf)[:n]
r.cond.L.Lock()
r.readResults = append(r.readResults, readResult{buf: buf, err: err})
if r.status == StatusStopping || err != nil {
r.status = StatusStopped
keepReading = false
}
r.cond.L.Unlock()
r.cond.Broadcast()
}
}
// Read implements the io.Reader interface.
func (r *BGReader) Read(p []byte) (int, error) {
r.cond.L.Lock()
defer r.cond.L.Unlock()
if len(r.readResults) > 0 {
return r.readFromReadResults(p)
}
// There are no unread background read results and the background reader is stopped.
if r.status == StatusStopped {
return r.r.Read(p)
}
// Wait for results from the background reader
for len(r.readResults) == 0 {
r.cond.Wait()
}
return r.readFromReadResults(p)
}
// readBackgroundResults reads a result previously read by the background reader. r.cond.L must be held.
func (r *BGReader) readFromReadResults(p []byte) (int, error) {
buf := r.readResults[0].buf
var err error
n := copy(p, *buf)
if n == len(*buf) {
err = r.readResults[0].err
iobufpool.Put(buf)
if len(r.readResults) == 1 {
r.readResults = nil
} else {
r.readResults = r.readResults[1:]
}
} else {
*buf = (*buf)[n:]
r.readResults[0].buf = buf
}
return n, err
}
func New(r io.Reader) *BGReader {
return &BGReader{
r: r,
cond: &sync.Cond{
L: &sync.Mutex{},
},
}
}

100
vendor/github.com/jackc/pgx/v5/pgconn/krb5.go generated vendored Normal file
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package pgconn
import (
"errors"
"fmt"
"github.com/jackc/pgx/v5/pgproto3"
)
// NewGSSFunc creates a GSS authentication provider, for use with
// RegisterGSSProvider.
type NewGSSFunc func() (GSS, error)
var newGSS NewGSSFunc
// RegisterGSSProvider registers a GSS authentication provider. For example, if
// you need to use Kerberos to authenticate with your server, add this to your
// main package:
//
// import "github.com/otan/gopgkrb5"
//
// func init() {
// pgconn.RegisterGSSProvider(func() (pgconn.GSS, error) { return gopgkrb5.NewGSS() })
// }
func RegisterGSSProvider(newGSSArg NewGSSFunc) {
newGSS = newGSSArg
}
// GSS provides GSSAPI authentication (e.g., Kerberos).
type GSS interface {
GetInitToken(host, service string) ([]byte, error)
GetInitTokenFromSPN(spn string) ([]byte, error)
Continue(inToken []byte) (done bool, outToken []byte, err error)
}
func (c *PgConn) gssAuth() error {
if newGSS == nil {
return errors.New("kerberos error: no GSSAPI provider registered, see https://github.com/otan/gopgkrb5")
}
cli, err := newGSS()
if err != nil {
return err
}
var nextData []byte
if c.config.KerberosSpn != "" {
// Use the supplied SPN if provided.
nextData, err = cli.GetInitTokenFromSPN(c.config.KerberosSpn)
} else {
// Allow the kerberos service name to be overridden
service := "postgres"
if c.config.KerberosSrvName != "" {
service = c.config.KerberosSrvName
}
nextData, err = cli.GetInitToken(c.config.Host, service)
}
if err != nil {
return err
}
for {
gssResponse := &pgproto3.GSSResponse{
Data: nextData,
}
c.frontend.Send(gssResponse)
err = c.flushWithPotentialWriteReadDeadlock()
if err != nil {
return err
}
resp, err := c.rxGSSContinue()
if err != nil {
return err
}
var done bool
done, nextData, err = cli.Continue(resp.Data)
if err != nil {
return err
}
if done {
break
}
}
return nil
}
func (c *PgConn) rxGSSContinue() (*pgproto3.AuthenticationGSSContinue, error) {
msg, err := c.receiveMessage()
if err != nil {
return nil, err
}
switch m := msg.(type) {
case *pgproto3.AuthenticationGSSContinue:
return m, nil
case *pgproto3.ErrorResponse:
return nil, ErrorResponseToPgError(m)
}
return nil, fmt.Errorf("expected AuthenticationGSSContinue message but received unexpected message %T", msg)
}

2504
vendor/github.com/jackc/pgx/v5/pgconn/pgconn.go generated vendored Normal file
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7
vendor/github.com/jackc/pgx/v5/pgproto3/README.md generated vendored Normal file
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# pgproto3
Package pgproto3 is an encoder and decoder of the PostgreSQL wire protocol version 3.
pgproto3 can be used as a foundation for PostgreSQL drivers, proxies, mock servers, load balancers and more.
See example/pgfortune for a playful example of a fake PostgreSQL server.

50
vendor/github.com/jackc/pgx/v5/pgproto3/authentication_cleartext_password.go generated vendored Normal file
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package pgproto3
import (
"encoding/binary"
"encoding/json"
"errors"
"github.com/jackc/pgx/v5/internal/pgio"
)
// AuthenticationCleartextPassword is a message sent from the backend indicating that a clear-text password is required.
type AuthenticationCleartextPassword struct{}
// Backend identifies this message as sendable by the PostgreSQL backend.
func (*AuthenticationCleartextPassword) Backend() {}
// Backend identifies this message as an authentication response.
func (*AuthenticationCleartextPassword) AuthenticationResponse() {}
// Decode decodes src into dst. src must contain the complete message with the exception of the initial 1 byte message
// type identifier and 4 byte message length.
func (dst *AuthenticationCleartextPassword) Decode(src []byte) error {
if len(src) != 4 {
return errors.New("bad authentication message size")
}
authType := binary.BigEndian.Uint32(src)
if authType != AuthTypeCleartextPassword {
return errors.New("bad auth type")
}
return nil
}
// Encode encodes src into dst. dst will include the 1 byte message type identifier and the 4 byte message length.
func (src *AuthenticationCleartextPassword) Encode(dst []byte) ([]byte, error) {
dst, sp := beginMessage(dst, 'R')
dst = pgio.AppendUint32(dst, AuthTypeCleartextPassword)
return finishMessage(dst, sp)
}
// MarshalJSON implements encoding/json.Marshaler.
func (src AuthenticationCleartextPassword) MarshalJSON() ([]byte, error) {
return json.Marshal(struct {
Type string
}{
Type: "AuthenticationCleartextPassword",
})
}

58
vendor/github.com/jackc/pgx/v5/pgproto3/authentication_gss.go generated vendored Normal file
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package pgproto3
import (
"encoding/binary"
"encoding/json"
"errors"
"github.com/jackc/pgx/v5/internal/pgio"
)
type AuthenticationGSS struct{}
func (a *AuthenticationGSS) Backend() {}
func (a *AuthenticationGSS) AuthenticationResponse() {}
func (a *AuthenticationGSS) Decode(src []byte) error {
if len(src) < 4 {
return errors.New("authentication message too short")
}
authType := binary.BigEndian.Uint32(src)
if authType != AuthTypeGSS {
return errors.New("bad auth type")
}
return nil
}
func (a *AuthenticationGSS) Encode(dst []byte) ([]byte, error) {
dst, sp := beginMessage(dst, 'R')
dst = pgio.AppendUint32(dst, AuthTypeGSS)
return finishMessage(dst, sp)
}
func (a *AuthenticationGSS) MarshalJSON() ([]byte, error) {
return json.Marshal(struct {
Type string
Data []byte
}{
Type: "AuthenticationGSS",
})
}
func (a *AuthenticationGSS) UnmarshalJSON(data []byte) error {
// Ignore null, like in the main JSON package.
if string(data) == "null" {
return nil
}
var msg struct {
Type string
}
if err := json.Unmarshal(data, &msg); err != nil {
return err
}
return nil
}

67
vendor/github.com/jackc/pgx/v5/pgproto3/authentication_gss_continue.go generated vendored Normal file
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@@ -0,0 +1,67 @@
package pgproto3
import (
"encoding/binary"
"encoding/json"
"errors"
"github.com/jackc/pgx/v5/internal/pgio"
)
type AuthenticationGSSContinue struct {
Data []byte
}
func (a *AuthenticationGSSContinue) Backend() {}
func (a *AuthenticationGSSContinue) AuthenticationResponse() {}
func (a *AuthenticationGSSContinue) Decode(src []byte) error {
if len(src) < 4 {
return errors.New("authentication message too short")
}
authType := binary.BigEndian.Uint32(src)
if authType != AuthTypeGSSCont {
return errors.New("bad auth type")
}
a.Data = src[4:]
return nil
}
func (a *AuthenticationGSSContinue) Encode(dst []byte) ([]byte, error) {
dst, sp := beginMessage(dst, 'R')
dst = pgio.AppendUint32(dst, AuthTypeGSSCont)
dst = append(dst, a.Data...)
return finishMessage(dst, sp)
}
func (a *AuthenticationGSSContinue) MarshalJSON() ([]byte, error) {
return json.Marshal(struct {
Type string
Data []byte
}{
Type: "AuthenticationGSSContinue",
Data: a.Data,
})
}
func (a *AuthenticationGSSContinue) UnmarshalJSON(data []byte) error {
// Ignore null, like in the main JSON package.
if string(data) == "null" {
return nil
}
var msg struct {
Type string
Data []byte
}
if err := json.Unmarshal(data, &msg); err != nil {
return err
}
a.Data = msg.Data
return nil
}

76
vendor/github.com/jackc/pgx/v5/pgproto3/authentication_md5_password.go generated vendored Normal file
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package pgproto3
import (
"encoding/binary"
"encoding/json"
"errors"
"github.com/jackc/pgx/v5/internal/pgio"
)
// AuthenticationMD5Password is a message sent from the backend indicating that an MD5 hashed password is required.
type AuthenticationMD5Password struct {
Salt [4]byte
}
// Backend identifies this message as sendable by the PostgreSQL backend.
func (*AuthenticationMD5Password) Backend() {}
// Backend identifies this message as an authentication response.
func (*AuthenticationMD5Password) AuthenticationResponse() {}
// Decode decodes src into dst. src must contain the complete message with the exception of the initial 1 byte message
// type identifier and 4 byte message length.
func (dst *AuthenticationMD5Password) Decode(src []byte) error {
if len(src) != 8 {
return errors.New("bad authentication message size")
}
authType := binary.BigEndian.Uint32(src)
if authType != AuthTypeMD5Password {
return errors.New("bad auth type")
}
copy(dst.Salt[:], src[4:8])
return nil
}
// Encode encodes src into dst. dst will include the 1 byte message type identifier and the 4 byte message length.
func (src *AuthenticationMD5Password) Encode(dst []byte) ([]byte, error) {
dst, sp := beginMessage(dst, 'R')
dst = pgio.AppendUint32(dst, AuthTypeMD5Password)
dst = append(dst, src.Salt[:]...)
return finishMessage(dst, sp)
}
// MarshalJSON implements encoding/json.Marshaler.
func (src AuthenticationMD5Password) MarshalJSON() ([]byte, error) {
return json.Marshal(struct {
Type string
Salt [4]byte
}{
Type: "AuthenticationMD5Password",
Salt: src.Salt,
})
}
// UnmarshalJSON implements encoding/json.Unmarshaler.
func (dst *AuthenticationMD5Password) UnmarshalJSON(data []byte) error {
// Ignore null, like in the main JSON package.
if string(data) == "null" {
return nil
}
var msg struct {
Type string
Salt [4]byte
}
if err := json.Unmarshal(data, &msg); err != nil {
return err
}
dst.Salt = msg.Salt
return nil
}

50
vendor/github.com/jackc/pgx/v5/pgproto3/authentication_ok.go generated vendored Normal file
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@@ -0,0 +1,50 @@
package pgproto3
import (
"encoding/binary"
"encoding/json"
"errors"
"github.com/jackc/pgx/v5/internal/pgio"
)
// AuthenticationOk is a message sent from the backend indicating that authentication was successful.
type AuthenticationOk struct{}
// Backend identifies this message as sendable by the PostgreSQL backend.
func (*AuthenticationOk) Backend() {}
// Backend identifies this message as an authentication response.
func (*AuthenticationOk) AuthenticationResponse() {}
// Decode decodes src into dst. src must contain the complete message with the exception of the initial 1 byte message
// type identifier and 4 byte message length.
func (dst *AuthenticationOk) Decode(src []byte) error {
if len(src) != 4 {
return errors.New("bad authentication message size")
}
authType := binary.BigEndian.Uint32(src)
if authType != AuthTypeOk {
return errors.New("bad auth type")
}
return nil
}
// Encode encodes src into dst. dst will include the 1 byte message type identifier and the 4 byte message length.
func (src *AuthenticationOk) Encode(dst []byte) ([]byte, error) {
dst, sp := beginMessage(dst, 'R')
dst = pgio.AppendUint32(dst, AuthTypeOk)
return finishMessage(dst, sp)
}
// MarshalJSON implements encoding/json.Marshaler.
func (src AuthenticationOk) MarshalJSON() ([]byte, error) {
return json.Marshal(struct {
Type string
}{
Type: "AuthenticationOK",
})
}

72
vendor/github.com/jackc/pgx/v5/pgproto3/authentication_sasl.go generated vendored Normal file
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package pgproto3
import (
"bytes"
"encoding/binary"
"encoding/json"
"errors"
"github.com/jackc/pgx/v5/internal/pgio"
)
// AuthenticationSASL is a message sent from the backend indicating that SASL authentication is required.
type AuthenticationSASL struct {
AuthMechanisms []string
}
// Backend identifies this message as sendable by the PostgreSQL backend.
func (*AuthenticationSASL) Backend() {}
// Backend identifies this message as an authentication response.
func (*AuthenticationSASL) AuthenticationResponse() {}
// Decode decodes src into dst. src must contain the complete message with the exception of the initial 1 byte message
// type identifier and 4 byte message length.
func (dst *AuthenticationSASL) Decode(src []byte) error {
if len(src) < 4 {
return errors.New("authentication message too short")
}
authType := binary.BigEndian.Uint32(src)
if authType != AuthTypeSASL {
return errors.New("bad auth type")
}
authMechanisms := src[4:]
for len(authMechanisms) > 1 {
idx := bytes.IndexByte(authMechanisms, 0)
if idx == -1 {
return &invalidMessageFormatErr{messageType: "AuthenticationSASL", details: "unterminated string"}
}
dst.AuthMechanisms = append(dst.AuthMechanisms, string(authMechanisms[:idx]))
authMechanisms = authMechanisms[idx+1:]
}
return nil
}
// Encode encodes src into dst. dst will include the 1 byte message type identifier and the 4 byte message length.
func (src *AuthenticationSASL) Encode(dst []byte) ([]byte, error) {
dst, sp := beginMessage(dst, 'R')
dst = pgio.AppendUint32(dst, AuthTypeSASL)
for _, s := range src.AuthMechanisms {
dst = append(dst, []byte(s)...)
dst = append(dst, 0)
}
dst = append(dst, 0)
return finishMessage(dst, sp)
}
// MarshalJSON implements encoding/json.Marshaler.
func (src AuthenticationSASL) MarshalJSON() ([]byte, error) {
return json.Marshal(struct {
Type string
AuthMechanisms []string
}{
Type: "AuthenticationSASL",
AuthMechanisms: src.AuthMechanisms,
})
}

75
vendor/github.com/jackc/pgx/v5/pgproto3/authentication_sasl_continue.go generated vendored Normal file
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@@ -0,0 +1,75 @@
package pgproto3
import (
"encoding/binary"
"encoding/json"
"errors"
"github.com/jackc/pgx/v5/internal/pgio"
)
// AuthenticationSASLContinue is a message sent from the backend containing a SASL challenge.
type AuthenticationSASLContinue struct {
Data []byte
}
// Backend identifies this message as sendable by the PostgreSQL backend.
func (*AuthenticationSASLContinue) Backend() {}
// Backend identifies this message as an authentication response.
func (*AuthenticationSASLContinue) AuthenticationResponse() {}
// Decode decodes src into dst. src must contain the complete message with the exception of the initial 1 byte message
// type identifier and 4 byte message length.
func (dst *AuthenticationSASLContinue) Decode(src []byte) error {
if len(src) < 4 {
return errors.New("authentication message too short")
}
authType := binary.BigEndian.Uint32(src)
if authType != AuthTypeSASLContinue {
return errors.New("bad auth type")
}
dst.Data = src[4:]
return nil
}
// Encode encodes src into dst. dst will include the 1 byte message type identifier and the 4 byte message length.
func (src *AuthenticationSASLContinue) Encode(dst []byte) ([]byte, error) {
dst, sp := beginMessage(dst, 'R')
dst = pgio.AppendUint32(dst, AuthTypeSASLContinue)
dst = append(dst, src.Data...)
return finishMessage(dst, sp)
}
// MarshalJSON implements encoding/json.Marshaler.
func (src AuthenticationSASLContinue) MarshalJSON() ([]byte, error) {
return json.Marshal(struct {
Type string
Data string
}{
Type: "AuthenticationSASLContinue",
Data: string(src.Data),
})
}
// UnmarshalJSON implements encoding/json.Unmarshaler.
func (dst *AuthenticationSASLContinue) UnmarshalJSON(data []byte) error {
// Ignore null, like in the main JSON package.
if string(data) == "null" {
return nil
}
var msg struct {
Data string
}
if err := json.Unmarshal(data, &msg); err != nil {
return err
}
dst.Data = []byte(msg.Data)
return nil
}

75
vendor/github.com/jackc/pgx/v5/pgproto3/authentication_sasl_final.go generated vendored Normal file
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@@ -0,0 +1,75 @@
package pgproto3
import (
"encoding/binary"
"encoding/json"
"errors"
"github.com/jackc/pgx/v5/internal/pgio"
)
// AuthenticationSASLFinal is a message sent from the backend indicating a SASL authentication has completed.
type AuthenticationSASLFinal struct {
Data []byte
}
// Backend identifies this message as sendable by the PostgreSQL backend.
func (*AuthenticationSASLFinal) Backend() {}
// Backend identifies this message as an authentication response.
func (*AuthenticationSASLFinal) AuthenticationResponse() {}
// Decode decodes src into dst. src must contain the complete message with the exception of the initial 1 byte message
// type identifier and 4 byte message length.
func (dst *AuthenticationSASLFinal) Decode(src []byte) error {
if len(src) < 4 {
return errors.New("authentication message too short")
}
authType := binary.BigEndian.Uint32(src)
if authType != AuthTypeSASLFinal {
return errors.New("bad auth type")
}
dst.Data = src[4:]
return nil
}
// Encode encodes src into dst. dst will include the 1 byte message type identifier and the 4 byte message length.
func (src *AuthenticationSASLFinal) Encode(dst []byte) ([]byte, error) {
dst, sp := beginMessage(dst, 'R')
dst = pgio.AppendUint32(dst, AuthTypeSASLFinal)
dst = append(dst, src.Data...)
return finishMessage(dst, sp)
}
// MarshalJSON implements encoding/json.Unmarshaler.
func (src AuthenticationSASLFinal) MarshalJSON() ([]byte, error) {
return json.Marshal(struct {
Type string
Data string
}{
Type: "AuthenticationSASLFinal",
Data: string(src.Data),
})
}
// UnmarshalJSON implements encoding/json.Unmarshaler.
func (dst *AuthenticationSASLFinal) UnmarshalJSON(data []byte) error {
// Ignore null, like in the main JSON package.
if string(data) == "null" {
return nil
}
var msg struct {
Data string
}
if err := json.Unmarshal(data, &msg); err != nil {
return err
}
dst.Data = []byte(msg.Data)
return nil
}

299
vendor/github.com/jackc/pgx/v5/pgproto3/backend.go generated vendored Normal file
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@@ -0,0 +1,299 @@
package pgproto3
import (
"bytes"
"encoding/binary"
"fmt"
"io"
)
// Backend acts as a server for the PostgreSQL wire protocol version 3.
type Backend struct {
cr *chunkReader
w io.Writer
// tracer is used to trace messages when Send or Receive is called. This means an outbound message is traced
// before it is actually transmitted (i.e. before Flush).
tracer *tracer
wbuf []byte
encodeError error
// Frontend message flyweights
bind Bind
cancelRequest CancelRequest
_close Close
copyFail CopyFail
copyData CopyData
copyDone CopyDone
describe Describe
execute Execute
flush Flush
functionCall FunctionCall
gssEncRequest GSSEncRequest
parse Parse
query Query
sslRequest SSLRequest
startupMessage StartupMessage
sync Sync
terminate Terminate
bodyLen int
maxBodyLen int // maxBodyLen is the maximum length of a message body in octets. If a message body exceeds this length, Receive will return an error.
msgType byte
partialMsg bool
authType uint32
}
const (
minStartupPacketLen = 4 // minStartupPacketLen is a single 32-bit int version or code.
maxStartupPacketLen = 10000 // maxStartupPacketLen is MAX_STARTUP_PACKET_LENGTH from PG source.
)
// NewBackend creates a new Backend.
func NewBackend(r io.Reader, w io.Writer) *Backend {
cr := newChunkReader(r, 0)
return &Backend{cr: cr, w: w}
}
// Send sends a message to the frontend (i.e. the client). The message is buffered until Flush is called. Any error
// encountered will be returned from Flush.
func (b *Backend) Send(msg BackendMessage) {
if b.encodeError != nil {
return
}
prevLen := len(b.wbuf)
newBuf, err := msg.Encode(b.wbuf)
if err != nil {
b.encodeError = err
return
}
b.wbuf = newBuf
if b.tracer != nil {
b.tracer.traceMessage('B', int32(len(b.wbuf)-prevLen), msg)
}
}
// Flush writes any pending messages to the frontend (i.e. the client).
func (b *Backend) Flush() error {
if err := b.encodeError; err != nil {
b.encodeError = nil
b.wbuf = b.wbuf[:0]
return &writeError{err: err, safeToRetry: true}
}
n, err := b.w.Write(b.wbuf)
const maxLen = 1024
if len(b.wbuf) > maxLen {
b.wbuf = make([]byte, 0, maxLen)
} else {
b.wbuf = b.wbuf[:0]
}
if err != nil {
return &writeError{err: err, safeToRetry: n == 0}
}
return nil
}
// Trace starts tracing the message traffic to w. It writes in a similar format to that produced by the libpq function
// PQtrace.
func (b *Backend) Trace(w io.Writer, options TracerOptions) {
b.tracer = &tracer{
w: w,
buf: &bytes.Buffer{},
TracerOptions: options,
}
}
// Untrace stops tracing.
func (b *Backend) Untrace() {
b.tracer = nil
}
// ReceiveStartupMessage receives the initial connection message. This method is used of the normal Receive method
// because the initial connection message is "special" and does not include the message type as the first byte. This
// will return either a StartupMessage, SSLRequest, GSSEncRequest, or CancelRequest.
func (b *Backend) ReceiveStartupMessage() (FrontendMessage, error) {
buf, err := b.cr.Next(4)
if err != nil {
return nil, err
}
msgSize := int(binary.BigEndian.Uint32(buf) - 4)
if msgSize < minStartupPacketLen || msgSize > maxStartupPacketLen {
return nil, fmt.Errorf("invalid length of startup packet: %d", msgSize)
}
buf, err = b.cr.Next(msgSize)
if err != nil {
return nil, translateEOFtoErrUnexpectedEOF(err)
}
code := binary.BigEndian.Uint32(buf)
switch code {
case ProtocolVersionNumber:
err = b.startupMessage.Decode(buf)
if err != nil {
return nil, err
}
return &b.startupMessage, nil
case sslRequestNumber:
err = b.sslRequest.Decode(buf)
if err != nil {
return nil, err
}
return &b.sslRequest, nil
case cancelRequestCode:
err = b.cancelRequest.Decode(buf)
if err != nil {
return nil, err
}
return &b.cancelRequest, nil
case gssEncReqNumber:
err = b.gssEncRequest.Decode(buf)
if err != nil {
return nil, err
}
return &b.gssEncRequest, nil
default:
return nil, fmt.Errorf("unknown startup message code: %d", code)
}
}
// Receive receives a message from the frontend. The returned message is only valid until the next call to Receive.
func (b *Backend) Receive() (FrontendMessage, error) {
if !b.partialMsg {
header, err := b.cr.Next(5)
if err != nil {
return nil, translateEOFtoErrUnexpectedEOF(err)
}
b.msgType = header[0]
msgLength := int(binary.BigEndian.Uint32(header[1:]))
if msgLength < 4 {
return nil, fmt.Errorf("invalid message length: %d", msgLength)
}
b.bodyLen = msgLength - 4
if b.maxBodyLen > 0 && b.bodyLen > b.maxBodyLen {
return nil, &ExceededMaxBodyLenErr{b.maxBodyLen, b.bodyLen}
}
b.partialMsg = true
}
var msg FrontendMessage
switch b.msgType {
case 'B':
msg = &b.bind
case 'C':
msg = &b._close
case 'D':
msg = &b.describe
case 'E':
msg = &b.execute
case 'F':
msg = &b.functionCall
case 'f':
msg = &b.copyFail
case 'd':
msg = &b.copyData
case 'c':
msg = &b.copyDone
case 'H':
msg = &b.flush
case 'P':
msg = &b.parse
case 'p':
switch b.authType {
case AuthTypeSASL:
msg = &SASLInitialResponse{}
case AuthTypeSASLContinue:
msg = &SASLResponse{}
case AuthTypeSASLFinal:
msg = &SASLResponse{}
case AuthTypeGSS, AuthTypeGSSCont:
msg = &GSSResponse{}
case AuthTypeCleartextPassword, AuthTypeMD5Password:
fallthrough
default:
// to maintain backwards compatibility
msg = &PasswordMessage{}
}
case 'Q':
msg = &b.query
case 'S':
msg = &b.sync
case 'X':
msg = &b.terminate
default:
return nil, fmt.Errorf("unknown message type: %c", b.msgType)
}
msgBody, err := b.cr.Next(b.bodyLen)
if err != nil {
return nil, translateEOFtoErrUnexpectedEOF(err)
}
b.partialMsg = false
err = msg.Decode(msgBody)
if err != nil {
return nil, err
}
if b.tracer != nil {
b.tracer.traceMessage('F', int32(5+len(msgBody)), msg)
}
return msg, nil
}
// SetAuthType sets the authentication type in the backend.
// Since multiple message types can start with 'p', SetAuthType allows
// contextual identification of FrontendMessages. For example, in the
// PG message flow documentation for PasswordMessage:
//
// Byte1('p')
//
// Identifies the message as a password response. Note that this is also used for
// GSSAPI, SSPI and SASL response messages. The exact message type can be deduced from
// the context.
//
// Since the Frontend does not know about the state of a backend, it is important
// to call SetAuthType() after an authentication request is received by the Frontend.
func (b *Backend) SetAuthType(authType uint32) error {
switch authType {
case AuthTypeOk,
AuthTypeCleartextPassword,
AuthTypeMD5Password,
AuthTypeSCMCreds,
AuthTypeGSS,
AuthTypeGSSCont,
AuthTypeSSPI,
AuthTypeSASL,
AuthTypeSASLContinue,
AuthTypeSASLFinal:
b.authType = authType
default:
return fmt.Errorf("authType not recognized: %d", authType)
}
return nil
}
// SetMaxBodyLen sets the maximum length of a message body in octets.
// If a message body exceeds this length, Receive will return an error.
// This is useful for protecting against malicious clients that send
// large messages with the intent of causing memory exhaustion.
// The default value is 0.
// If maxBodyLen is 0, then no maximum is enforced.
func (b *Backend) SetMaxBodyLen(maxBodyLen int) {
b.maxBodyLen = maxBodyLen
}

50
vendor/github.com/jackc/pgx/v5/pgproto3/backend_key_data.go generated vendored Normal file
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@@ -0,0 +1,50 @@
package pgproto3
import (
"encoding/binary"
"encoding/json"
"github.com/jackc/pgx/v5/internal/pgio"
)
type BackendKeyData struct {
ProcessID uint32
SecretKey uint32
}
// Backend identifies this message as sendable by the PostgreSQL backend.
func (*BackendKeyData) Backend() {}
// Decode decodes src into dst. src must contain the complete message with the exception of the initial 1 byte message
// type identifier and 4 byte message length.
func (dst *BackendKeyData) Decode(src []byte) error {
if len(src) != 8 {
return &invalidMessageLenErr{messageType: "BackendKeyData", expectedLen: 8, actualLen: len(src)}
}
dst.ProcessID = binary.BigEndian.Uint32(src[:4])
dst.SecretKey = binary.BigEndian.Uint32(src[4:])
return nil
}
// Encode encodes src into dst. dst will include the 1 byte message type identifier and the 4 byte message length.
func (src *BackendKeyData) Encode(dst []byte) ([]byte, error) {
dst, sp := beginMessage(dst, 'K')
dst = pgio.AppendUint32(dst, src.ProcessID)
dst = pgio.AppendUint32(dst, src.SecretKey)
return finishMessage(dst, sp)
}
// MarshalJSON implements encoding/json.Marshaler.
func (src BackendKeyData) MarshalJSON() ([]byte, error) {
return json.Marshal(struct {
Type string
ProcessID uint32
SecretKey uint32
}{
Type: "BackendKeyData",
ProcessID: src.ProcessID,
SecretKey: src.SecretKey,
})
}

37
vendor/github.com/jackc/pgx/v5/pgproto3/big_endian.go generated vendored Normal file
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@@ -0,0 +1,37 @@
package pgproto3
import (
"encoding/binary"
)
type BigEndianBuf [8]byte
func (b BigEndianBuf) Int16(n int16) []byte {
buf := b[0:2]
binary.BigEndian.PutUint16(buf, uint16(n))
return buf
}
func (b BigEndianBuf) Uint16(n uint16) []byte {
buf := b[0:2]
binary.BigEndian.PutUint16(buf, n)
return buf
}
func (b BigEndianBuf) Int32(n int32) []byte {
buf := b[0:4]
binary.BigEndian.PutUint32(buf, uint32(n))
return buf
}
func (b BigEndianBuf) Uint32(n uint32) []byte {
buf := b[0:4]
binary.BigEndian.PutUint32(buf, n)
return buf
}
func (b BigEndianBuf) Int64(n int64) []byte {
buf := b[0:8]
binary.BigEndian.PutUint64(buf, uint64(n))
return buf
}

223
vendor/github.com/jackc/pgx/v5/pgproto3/bind.go generated vendored Normal file
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@@ -0,0 +1,223 @@
package pgproto3
import (
"bytes"
"encoding/binary"
"encoding/hex"
"encoding/json"
"errors"
"fmt"
"math"
"github.com/jackc/pgx/v5/internal/pgio"
)
type Bind struct {
DestinationPortal string
PreparedStatement string
ParameterFormatCodes []int16
Parameters [][]byte
ResultFormatCodes []int16
}
// Frontend identifies this message as sendable by a PostgreSQL frontend.
func (*Bind) Frontend() {}
// Decode decodes src into dst. src must contain the complete message with the exception of the initial 1 byte message
// type identifier and 4 byte message length.
func (dst *Bind) Decode(src []byte) error {
*dst = Bind{}
idx := bytes.IndexByte(src, 0)
if idx < 0 {
return &invalidMessageFormatErr{messageType: "Bind"}
}
dst.DestinationPortal = string(src[:idx])
rp := idx + 1
idx = bytes.IndexByte(src[rp:], 0)
if idx < 0 {
return &invalidMessageFormatErr{messageType: "Bind"}
}
dst.PreparedStatement = string(src[rp : rp+idx])
rp += idx + 1
if len(src[rp:]) < 2 {
return &invalidMessageFormatErr{messageType: "Bind"}
}
parameterFormatCodeCount := int(binary.BigEndian.Uint16(src[rp:]))
rp += 2
if parameterFormatCodeCount > 0 {
dst.ParameterFormatCodes = make([]int16, parameterFormatCodeCount)
if len(src[rp:]) < len(dst.ParameterFormatCodes)*2 {
return &invalidMessageFormatErr{messageType: "Bind"}
}
for i := 0; i < parameterFormatCodeCount; i++ {
dst.ParameterFormatCodes[i] = int16(binary.BigEndian.Uint16(src[rp:]))
rp += 2
}
}
if len(src[rp:]) < 2 {
return &invalidMessageFormatErr{messageType: "Bind"}
}
parameterCount := int(binary.BigEndian.Uint16(src[rp:]))
rp += 2
if parameterCount > 0 {
dst.Parameters = make([][]byte, parameterCount)
for i := 0; i < parameterCount; i++ {
if len(src[rp:]) < 4 {
return &invalidMessageFormatErr{messageType: "Bind"}
}
msgSize := int(int32(binary.BigEndian.Uint32(src[rp:])))
rp += 4
// null
if msgSize == -1 {
continue
}
if len(src[rp:]) < msgSize {
return &invalidMessageFormatErr{messageType: "Bind"}
}
dst.Parameters[i] = src[rp : rp+msgSize]
rp += msgSize
}
}
if len(src[rp:]) < 2 {
return &invalidMessageFormatErr{messageType: "Bind"}
}
resultFormatCodeCount := int(binary.BigEndian.Uint16(src[rp:]))
rp += 2
dst.ResultFormatCodes = make([]int16, resultFormatCodeCount)
if len(src[rp:]) < len(dst.ResultFormatCodes)*2 {
return &invalidMessageFormatErr{messageType: "Bind"}
}
for i := 0; i < resultFormatCodeCount; i++ {
dst.ResultFormatCodes[i] = int16(binary.BigEndian.Uint16(src[rp:]))
rp += 2
}
return nil
}
// Encode encodes src into dst. dst will include the 1 byte message type identifier and the 4 byte message length.
func (src *Bind) Encode(dst []byte) ([]byte, error) {
dst, sp := beginMessage(dst, 'B')
dst = append(dst, src.DestinationPortal...)
dst = append(dst, 0)
dst = append(dst, src.PreparedStatement...)
dst = append(dst, 0)
if len(src.ParameterFormatCodes) > math.MaxUint16 {
return nil, errors.New("too many parameter format codes")
}
dst = pgio.AppendUint16(dst, uint16(len(src.ParameterFormatCodes)))
for _, fc := range src.ParameterFormatCodes {
dst = pgio.AppendInt16(dst, fc)
}
if len(src.Parameters) > math.MaxUint16 {
return nil, errors.New("too many parameters")
}
dst = pgio.AppendUint16(dst, uint16(len(src.Parameters)))
for _, p := range src.Parameters {
if p == nil {
dst = pgio.AppendInt32(dst, -1)
continue
}
dst = pgio.AppendInt32(dst, int32(len(p)))
dst = append(dst, p...)
}
if len(src.ResultFormatCodes) > math.MaxUint16 {
return nil, errors.New("too many result format codes")
}
dst = pgio.AppendUint16(dst, uint16(len(src.ResultFormatCodes)))
for _, fc := range src.ResultFormatCodes {
dst = pgio.AppendInt16(dst, fc)
}
return finishMessage(dst, sp)
}
// MarshalJSON implements encoding/json.Marshaler.
func (src Bind) MarshalJSON() ([]byte, error) {
formattedParameters := make([]map[string]string, len(src.Parameters))
for i, p := range src.Parameters {
if p == nil {
continue
}
textFormat := true
if len(src.ParameterFormatCodes) == 1 {
textFormat = src.ParameterFormatCodes[0] == 0
} else if len(src.ParameterFormatCodes) > 1 {
textFormat = src.ParameterFormatCodes[i] == 0
}
if textFormat {
formattedParameters[i] = map[string]string{"text": string(p)}
} else {
formattedParameters[i] = map[string]string{"binary": hex.EncodeToString(p)}
}
}
return json.Marshal(struct {
Type string
DestinationPortal string
PreparedStatement string
ParameterFormatCodes []int16
Parameters []map[string]string
ResultFormatCodes []int16
}{
Type: "Bind",
DestinationPortal: src.DestinationPortal,
PreparedStatement: src.PreparedStatement,
ParameterFormatCodes: src.ParameterFormatCodes,
Parameters: formattedParameters,
ResultFormatCodes: src.ResultFormatCodes,
})
}
// UnmarshalJSON implements encoding/json.Unmarshaler.
func (dst *Bind) UnmarshalJSON(data []byte) error {
// Ignore null, like in the main JSON package.
if string(data) == "null" {
return nil
}
var msg struct {
DestinationPortal string
PreparedStatement string
ParameterFormatCodes []int16
Parameters []map[string]string
ResultFormatCodes []int16
}
err := json.Unmarshal(data, &msg)
if err != nil {
return err
}
dst.DestinationPortal = msg.DestinationPortal
dst.PreparedStatement = msg.PreparedStatement
dst.ParameterFormatCodes = msg.ParameterFormatCodes
dst.Parameters = make([][]byte, len(msg.Parameters))
dst.ResultFormatCodes = msg.ResultFormatCodes
for n, parameter := range msg.Parameters {
dst.Parameters[n], err = getValueFromJSON(parameter)
if err != nil {
return fmt.Errorf("cannot get param %d: %w", n, err)
}
}
return nil
}

34
vendor/github.com/jackc/pgx/v5/pgproto3/bind_complete.go generated vendored Normal file
View File

@@ -0,0 +1,34 @@
package pgproto3
import (
"encoding/json"
)
type BindComplete struct{}
// Backend identifies this message as sendable by the PostgreSQL backend.
func (*BindComplete) Backend() {}
// Decode decodes src into dst. src must contain the complete message with the exception of the initial 1 byte message
// type identifier and 4 byte message length.
func (dst *BindComplete) Decode(src []byte) error {
if len(src) != 0 {
return &invalidMessageLenErr{messageType: "BindComplete", expectedLen: 0, actualLen: len(src)}
}
return nil
}
// Encode encodes src into dst. dst will include the 1 byte message type identifier and the 4 byte message length.
func (src *BindComplete) Encode(dst []byte) ([]byte, error) {
return append(dst, '2', 0, 0, 0, 4), nil
}
// MarshalJSON implements encoding/json.Marshaler.
func (src BindComplete) MarshalJSON() ([]byte, error) {
return json.Marshal(struct {
Type string
}{
Type: "BindComplete",
})
}

58
vendor/github.com/jackc/pgx/v5/pgproto3/cancel_request.go generated vendored Normal file
View File

@@ -0,0 +1,58 @@
package pgproto3
import (
"encoding/binary"
"encoding/json"
"errors"
"github.com/jackc/pgx/v5/internal/pgio"
)
const cancelRequestCode = 80877102
type CancelRequest struct {
ProcessID uint32
SecretKey uint32
}
// Frontend identifies this message as sendable by a PostgreSQL frontend.
func (*CancelRequest) Frontend() {}
func (dst *CancelRequest) Decode(src []byte) error {
if len(src) != 12 {
return errors.New("bad cancel request size")
}
requestCode := binary.BigEndian.Uint32(src)
if requestCode != cancelRequestCode {
return errors.New("bad cancel request code")
}
dst.ProcessID = binary.BigEndian.Uint32(src[4:])
dst.SecretKey = binary.BigEndian.Uint32(src[8:])
return nil
}
// Encode encodes src into dst. dst will include the 4 byte message length.
func (src *CancelRequest) Encode(dst []byte) ([]byte, error) {
dst = pgio.AppendInt32(dst, 16)
dst = pgio.AppendInt32(dst, cancelRequestCode)
dst = pgio.AppendUint32(dst, src.ProcessID)
dst = pgio.AppendUint32(dst, src.SecretKey)
return dst, nil
}
// MarshalJSON implements encoding/json.Marshaler.
func (src CancelRequest) MarshalJSON() ([]byte, error) {
return json.Marshal(struct {
Type string
ProcessID uint32
SecretKey uint32
}{
Type: "CancelRequest",
ProcessID: src.ProcessID,
SecretKey: src.SecretKey,
})
}

90
vendor/github.com/jackc/pgx/v5/pgproto3/chunkreader.go generated vendored Normal file
View File

@@ -0,0 +1,90 @@
package pgproto3
import (
"io"
"github.com/jackc/pgx/v5/internal/iobufpool"
)
// chunkReader is a io.Reader wrapper that minimizes IO reads and memory allocations. It allocates memory in chunks and
// will read as much as will fit in the current buffer in a single call regardless of how large a read is actually
// requested. The memory returned via Next is only valid until the next call to Next.
//
// This is roughly equivalent to a bufio.Reader that only uses Peek and Discard to never copy bytes.
type chunkReader struct {
r io.Reader
buf *[]byte
rp, wp int // buf read position and write position
minBufSize int
}
// newChunkReader creates and returns a new chunkReader for r with default configuration. If minBufSize is <= 0 it uses
// a default value.
func newChunkReader(r io.Reader, minBufSize int) *chunkReader {
if minBufSize <= 0 {
// By historical reasons Postgres currently has 8KB send buffer inside,
// so here we want to have at least the same size buffer.
// @see https://github.com/postgres/postgres/blob/249d64999615802752940e017ee5166e726bc7cd/src/backend/libpq/pqcomm.c#L134
// @see https://www.postgresql.org/message-id/0cdc5485-cb3c-5e16-4a46-e3b2f7a41322%40ya.ru
//
// In addition, testing has found no benefit of any larger buffer.
minBufSize = 8192
}
return &chunkReader{
r: r,
minBufSize: minBufSize,
buf: iobufpool.Get(minBufSize),
}
}
// Next returns buf filled with the next n bytes. buf is only valid until next call of Next. If an error occurs, buf
// will be nil.
func (r *chunkReader) Next(n int) (buf []byte, err error) {
// Reset the buffer if it is empty
if r.rp == r.wp {
if len(*r.buf) != r.minBufSize {
iobufpool.Put(r.buf)
r.buf = iobufpool.Get(r.minBufSize)
}
r.rp = 0
r.wp = 0
}
// n bytes already in buf
if (r.wp - r.rp) >= n {
buf = (*r.buf)[r.rp : r.rp+n : r.rp+n]
r.rp += n
return buf, err
}
// buf is smaller than requested number of bytes
if len(*r.buf) < n {
bigBuf := iobufpool.Get(n)
r.wp = copy((*bigBuf), (*r.buf)[r.rp:r.wp])
r.rp = 0
iobufpool.Put(r.buf)
r.buf = bigBuf
}
// buf is large enough, but need to shift filled area to start to make enough contiguous space
minReadCount := n - (r.wp - r.rp)
if (len(*r.buf) - r.wp) < minReadCount {
r.wp = copy((*r.buf), (*r.buf)[r.rp:r.wp])
r.rp = 0
}
// Read at least the required number of bytes from the underlying io.Reader
readBytesCount, err := io.ReadAtLeast(r.r, (*r.buf)[r.wp:], minReadCount)
r.wp += readBytesCount
// fmt.Println("read", n)
if err != nil {
return nil, err
}
buf = (*r.buf)[r.rp : r.rp+n : r.rp+n]
r.rp += n
return buf, nil
}

81
vendor/github.com/jackc/pgx/v5/pgproto3/close.go generated vendored Normal file
View File

@@ -0,0 +1,81 @@
package pgproto3
import (
"bytes"
"encoding/json"
"errors"
)
type Close struct {
ObjectType byte // 'S' = prepared statement, 'P' = portal
Name string
}
// Frontend identifies this message as sendable by a PostgreSQL frontend.
func (*Close) Frontend() {}
// Decode decodes src into dst. src must contain the complete message with the exception of the initial 1 byte message
// type identifier and 4 byte message length.
func (dst *Close) Decode(src []byte) error {
if len(src) < 2 {
return &invalidMessageFormatErr{messageType: "Close"}
}
dst.ObjectType = src[0]
rp := 1
idx := bytes.IndexByte(src[rp:], 0)
if idx != len(src[rp:])-1 {
return &invalidMessageFormatErr{messageType: "Close"}
}
dst.Name = string(src[rp : len(src)-1])
return nil
}
// Encode encodes src into dst. dst will include the 1 byte message type identifier and the 4 byte message length.
func (src *Close) Encode(dst []byte) ([]byte, error) {
dst, sp := beginMessage(dst, 'C')
dst = append(dst, src.ObjectType)
dst = append(dst, src.Name...)
dst = append(dst, 0)
return finishMessage(dst, sp)
}
// MarshalJSON implements encoding/json.Marshaler.
func (src Close) MarshalJSON() ([]byte, error) {
return json.Marshal(struct {
Type string
ObjectType string
Name string
}{
Type: "Close",
ObjectType: string(src.ObjectType),
Name: src.Name,
})
}
// UnmarshalJSON implements encoding/json.Unmarshaler.
func (dst *Close) UnmarshalJSON(data []byte) error {
// Ignore null, like in the main JSON package.
if string(data) == "null" {
return nil
}
var msg struct {
ObjectType string
Name string
}
if err := json.Unmarshal(data, &msg); err != nil {
return err
}
if len(msg.ObjectType) != 1 {
return errors.New("invalid length for Close.ObjectType")
}
dst.ObjectType = byte(msg.ObjectType[0])
dst.Name = msg.Name
return nil
}

34
vendor/github.com/jackc/pgx/v5/pgproto3/close_complete.go generated vendored Normal file
View File

@@ -0,0 +1,34 @@
package pgproto3
import (
"encoding/json"
)
type CloseComplete struct{}
// Backend identifies this message as sendable by the PostgreSQL backend.
func (*CloseComplete) Backend() {}
// Decode decodes src into dst. src must contain the complete message with the exception of the initial 1 byte message
// type identifier and 4 byte message length.
func (dst *CloseComplete) Decode(src []byte) error {
if len(src) != 0 {
return &invalidMessageLenErr{messageType: "CloseComplete", expectedLen: 0, actualLen: len(src)}
}
return nil
}
// Encode encodes src into dst. dst will include the 1 byte message type identifier and the 4 byte message length.
func (src *CloseComplete) Encode(dst []byte) ([]byte, error) {
return append(dst, '3', 0, 0, 0, 4), nil
}
// MarshalJSON implements encoding/json.Marshaler.
func (src CloseComplete) MarshalJSON() ([]byte, error) {
return json.Marshal(struct {
Type string
}{
Type: "CloseComplete",
})
}

66
vendor/github.com/jackc/pgx/v5/pgproto3/command_complete.go generated vendored Normal file
View File

@@ -0,0 +1,66 @@
package pgproto3
import (
"bytes"
"encoding/json"
)
type CommandComplete struct {
CommandTag []byte
}
// Backend identifies this message as sendable by the PostgreSQL backend.
func (*CommandComplete) Backend() {}
// Decode decodes src into dst. src must contain the complete message with the exception of the initial 1 byte message
// type identifier and 4 byte message length.
func (dst *CommandComplete) Decode(src []byte) error {
idx := bytes.IndexByte(src, 0)
if idx == -1 {
return &invalidMessageFormatErr{messageType: "CommandComplete", details: "unterminated string"}
}
if idx != len(src)-1 {
return &invalidMessageFormatErr{messageType: "CommandComplete", details: "string terminated too early"}
}
dst.CommandTag = src[:idx]
return nil
}
// Encode encodes src into dst. dst will include the 1 byte message type identifier and the 4 byte message length.
func (src *CommandComplete) Encode(dst []byte) ([]byte, error) {
dst, sp := beginMessage(dst, 'C')
dst = append(dst, src.CommandTag...)
dst = append(dst, 0)
return finishMessage(dst, sp)
}
// MarshalJSON implements encoding/json.Marshaler.
func (src CommandComplete) MarshalJSON() ([]byte, error) {
return json.Marshal(struct {
Type string
CommandTag string
}{
Type: "CommandComplete",
CommandTag: string(src.CommandTag),
})
}
// UnmarshalJSON implements encoding/json.Unmarshaler.
func (dst *CommandComplete) UnmarshalJSON(data []byte) error {
// Ignore null, like in the main JSON package.
if string(data) == "null" {
return nil
}
var msg struct {
CommandTag string
}
if err := json.Unmarshal(data, &msg); err != nil {
return err
}
dst.CommandTag = []byte(msg.CommandTag)
return nil
}

95
vendor/github.com/jackc/pgx/v5/pgproto3/copy_both_response.go generated vendored Normal file
View File

@@ -0,0 +1,95 @@
package pgproto3
import (
"bytes"
"encoding/binary"
"encoding/json"
"errors"
"math"
"github.com/jackc/pgx/v5/internal/pgio"
)
type CopyBothResponse struct {
OverallFormat byte
ColumnFormatCodes []uint16
}
// Backend identifies this message as sendable by the PostgreSQL backend.
func (*CopyBothResponse) Backend() {}
// Decode decodes src into dst. src must contain the complete message with the exception of the initial 1 byte message
// type identifier and 4 byte message length.
func (dst *CopyBothResponse) Decode(src []byte) error {
buf := bytes.NewBuffer(src)
if buf.Len() < 3 {
return &invalidMessageFormatErr{messageType: "CopyBothResponse"}
}
overallFormat := buf.Next(1)[0]
columnCount := int(binary.BigEndian.Uint16(buf.Next(2)))
if buf.Len() != columnCount*2 {
return &invalidMessageFormatErr{messageType: "CopyBothResponse"}
}
columnFormatCodes := make([]uint16, columnCount)
for i := 0; i < columnCount; i++ {
columnFormatCodes[i] = binary.BigEndian.Uint16(buf.Next(2))
}
*dst = CopyBothResponse{OverallFormat: overallFormat, ColumnFormatCodes: columnFormatCodes}
return nil
}
// Encode encodes src into dst. dst will include the 1 byte message type identifier and the 4 byte message length.
func (src *CopyBothResponse) Encode(dst []byte) ([]byte, error) {
dst, sp := beginMessage(dst, 'W')
dst = append(dst, src.OverallFormat)
if len(src.ColumnFormatCodes) > math.MaxUint16 {
return nil, errors.New("too many column format codes")
}
dst = pgio.AppendUint16(dst, uint16(len(src.ColumnFormatCodes)))
for _, fc := range src.ColumnFormatCodes {
dst = pgio.AppendUint16(dst, fc)
}
return finishMessage(dst, sp)
}
// MarshalJSON implements encoding/json.Marshaler.
func (src CopyBothResponse) MarshalJSON() ([]byte, error) {
return json.Marshal(struct {
Type string
ColumnFormatCodes []uint16
}{
Type: "CopyBothResponse",
ColumnFormatCodes: src.ColumnFormatCodes,
})
}
// UnmarshalJSON implements encoding/json.Unmarshaler.
func (dst *CopyBothResponse) UnmarshalJSON(data []byte) error {
// Ignore null, like in the main JSON package.
if string(data) == "null" {
return nil
}
var msg struct {
OverallFormat string
ColumnFormatCodes []uint16
}
if err := json.Unmarshal(data, &msg); err != nil {
return err
}
if len(msg.OverallFormat) != 1 {
return errors.New("invalid length for CopyBothResponse.OverallFormat")
}
dst.OverallFormat = msg.OverallFormat[0]
dst.ColumnFormatCodes = msg.ColumnFormatCodes
return nil
}

59
vendor/github.com/jackc/pgx/v5/pgproto3/copy_data.go generated vendored Normal file
View File

@@ -0,0 +1,59 @@
package pgproto3
import (
"encoding/hex"
"encoding/json"
)
type CopyData struct {
Data []byte
}
// Backend identifies this message as sendable by the PostgreSQL backend.
func (*CopyData) Backend() {}
// Frontend identifies this message as sendable by a PostgreSQL frontend.
func (*CopyData) Frontend() {}
// Decode decodes src into dst. src must contain the complete message with the exception of the initial 1 byte message
// type identifier and 4 byte message length.
func (dst *CopyData) Decode(src []byte) error {
dst.Data = src
return nil
}
// Encode encodes src into dst. dst will include the 1 byte message type identifier and the 4 byte message length.
func (src *CopyData) Encode(dst []byte) ([]byte, error) {
dst, sp := beginMessage(dst, 'd')
dst = append(dst, src.Data...)
return finishMessage(dst, sp)
}
// MarshalJSON implements encoding/json.Marshaler.
func (src CopyData) MarshalJSON() ([]byte, error) {
return json.Marshal(struct {
Type string
Data string
}{
Type: "CopyData",
Data: hex.EncodeToString(src.Data),
})
}
// UnmarshalJSON implements encoding/json.Unmarshaler.
func (dst *CopyData) UnmarshalJSON(data []byte) error {
// Ignore null, like in the main JSON package.
if string(data) == "null" {
return nil
}
var msg struct {
Data string
}
if err := json.Unmarshal(data, &msg); err != nil {
return err
}
dst.Data = []byte(msg.Data)
return nil
}

37
vendor/github.com/jackc/pgx/v5/pgproto3/copy_done.go generated vendored Normal file
View File

@@ -0,0 +1,37 @@
package pgproto3
import (
"encoding/json"
)
type CopyDone struct{}
// Backend identifies this message as sendable by the PostgreSQL backend.
func (*CopyDone) Backend() {}
// Frontend identifies this message as sendable by a PostgreSQL frontend.
func (*CopyDone) Frontend() {}
// Decode decodes src into dst. src must contain the complete message with the exception of the initial 1 byte message
// type identifier and 4 byte message length.
func (dst *CopyDone) Decode(src []byte) error {
if len(src) != 0 {
return &invalidMessageLenErr{messageType: "CopyDone", expectedLen: 0, actualLen: len(src)}
}
return nil
}
// Encode encodes src into dst. dst will include the 1 byte message type identifier and the 4 byte message length.
func (src *CopyDone) Encode(dst []byte) ([]byte, error) {
return append(dst, 'c', 0, 0, 0, 4), nil
}
// MarshalJSON implements encoding/json.Marshaler.
func (src CopyDone) MarshalJSON() ([]byte, error) {
return json.Marshal(struct {
Type string
}{
Type: "CopyDone",
})
}

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