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https://github.com/golang/go
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goinstall: select the tag that is closest to runtime.Version
release.r50 looks for newest tag <= go.r50 weekly.2010-10-10 looks for newest tag <= go.2010-10-10 Implements behavior for hg, git, and bzr. R=dsymonds, rsc, n13m3y3r CC=golang-dev https://golang.org/cl/4873057
This commit is contained in:
Andrew Gerrand
parent
596bf61d6c
commit
58b05e2448
@ -11,3 +11,9 @@ GOFILES=\
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make.go\
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include ../../Make.cmd
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test:
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gotest
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testshort:
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gotest -test.short
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@ -94,8 +94,11 @@ attempt to fetch updates. The -u flag changes this behavior,
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causing goinstall to update all remote packages encountered during
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the installation.
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When downloading or updating, goinstall first looks for a tag or branch
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named "release". If there is one, it uses that version of the code.
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When downloading or updating, goinstall looks for a tag with the "go." prefix
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that corresponds to the local Go version. For Go "release.r58" it looks for a
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tag named "go.r58". For "weekly.2011-06-03" it looks for "go.weekly.2011-06-03".
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If the specific "go.X" tag is not found, it chooses the closest earlier version.
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If an appropriate tag is found, goinstall uses that version of the code.
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Otherwise it uses the default version selected by the version control
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system, typically HEAD for git, tip for Mercurial.
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@ -7,12 +7,15 @@
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package main
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import (
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"bytes"
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"exec"
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"fmt"
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"http"
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"os"
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"path/filepath"
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"regexp"
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"runtime"
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"strconv"
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"strings"
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)
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@ -36,22 +39,21 @@ func maybeReportToDashboard(path string) {
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// a vcs represents a version control system
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// like Mercurial, Git, or Subversion.
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type vcs struct {
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name string
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cmd string
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metadir string
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checkout string
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clone string
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update string
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updateReleaseFlag string
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pull string
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pullForceFlag string
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log string
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logLimitFlag string
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logReleaseFlag string
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check string
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protocols []string
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suffix string
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defaultHosts []host
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name string
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cmd string
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metadir string
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checkout string
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clone string
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update string
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updateRevFlag string
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pull string
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pullForceFlag string
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tagList string
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tagListRe *regexp.Regexp
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check string
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protocols []string
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suffix string
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defaultHosts []host
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}
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type host struct {
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@ -61,20 +63,18 @@ type host struct {
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}
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var hg = vcs{
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name: "Mercurial",
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cmd: "hg",
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metadir: ".hg",
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checkout: "checkout",
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clone: "clone",
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update: "update",
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updateReleaseFlag: "release",
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pull: "pull",
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log: "log",
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logLimitFlag: "-l1",
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logReleaseFlag: "-rrelease",
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check: "identify",
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protocols: []string{"https", "http"},
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suffix: ".hg",
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name: "Mercurial",
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cmd: "hg",
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metadir: ".hg",
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checkout: "checkout",
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clone: "clone",
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update: "update",
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pull: "pull",
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tagList: "tags",
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tagListRe: regexp.MustCompile("([^ ]+)[^\n]+\n"),
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check: "identify",
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protocols: []string{"https", "http"},
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suffix: ".hg",
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defaultHosts: []host{
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{regexp.MustCompile(`^([a-z0-9\-]+\.googlecode\.com/hg)(/[a-z0-9A-Z_.\-/]*)?$`), "https", ""},
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{regexp.MustCompile(`^(bitbucket\.org/[a-z0-9A-Z_.\-]+/[a-z0-9A-Z_.\-]+)(/[a-z0-9A-Z_.\-/]*)?$`), "http", ""},
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@ -82,20 +82,18 @@ var hg = vcs{
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}
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var git = vcs{
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name: "Git",
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cmd: "git",
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metadir: ".git",
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checkout: "checkout",
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clone: "clone",
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update: "pull",
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updateReleaseFlag: "release",
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pull: "fetch",
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log: "show-ref",
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logLimitFlag: "",
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logReleaseFlag: "release",
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check: "ls-remote",
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protocols: []string{"git", "https", "http"},
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suffix: ".git",
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name: "Git",
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cmd: "git",
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metadir: ".git",
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checkout: "checkout",
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clone: "clone",
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update: "pull",
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pull: "fetch",
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tagList: "tag",
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tagListRe: regexp.MustCompile("([^\n]+)\n"),
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check: "ls-remote",
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protocols: []string{"git", "https", "http"},
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suffix: ".git",
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defaultHosts: []host{
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{regexp.MustCompile(`^([a-z0-9\-]+\.googlecode\.com/git)(/[a-z0-9A-Z_.\-/]*)?$`), "https", ""},
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{regexp.MustCompile(`^(github\.com/[a-z0-9A-Z_.\-]+/[a-z0-9A-Z_.\-]+)(/[a-z0-9A-Z_.\-/]*)?$`), "http", ".git"},
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@ -103,40 +101,35 @@ var git = vcs{
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}
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var svn = vcs{
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name: "Subversion",
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cmd: "svn",
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metadir: ".svn",
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checkout: "checkout",
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clone: "checkout",
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update: "update",
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updateReleaseFlag: "release",
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log: "log",
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logLimitFlag: "-l1",
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logReleaseFlag: "release",
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check: "info",
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protocols: []string{"https", "http", "svn"},
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suffix: ".svn",
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name: "Subversion",
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cmd: "svn",
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metadir: ".svn",
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checkout: "checkout",
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clone: "checkout",
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update: "update",
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check: "info",
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protocols: []string{"https", "http", "svn"},
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suffix: ".svn",
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defaultHosts: []host{
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{regexp.MustCompile(`^([a-z0-9\-]+\.googlecode\.com/svn)(/[a-z0-9A-Z_.\-/]*)?$`), "https", ""},
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},
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}
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var bzr = vcs{
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name: "Bazaar",
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cmd: "bzr",
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metadir: ".bzr",
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checkout: "update",
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clone: "branch",
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update: "update",
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updateReleaseFlag: "-rrelease",
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pull: "pull",
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pullForceFlag: "--overwrite",
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log: "log",
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logLimitFlag: "-l1",
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logReleaseFlag: "-rrelease",
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check: "info",
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protocols: []string{"https", "http", "bzr"},
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suffix: ".bzr",
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name: "Bazaar",
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cmd: "bzr",
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metadir: ".bzr",
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checkout: "update",
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clone: "branch",
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update: "update",
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updateRevFlag: "-r",
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pull: "pull",
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pullForceFlag: "--overwrite",
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tagList: "tags",
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tagListRe: regexp.MustCompile("([^ ]+)[^\n]+\n"),
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check: "info",
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protocols: []string{"https", "http", "bzr"},
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suffix: ".bzr",
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defaultHosts: []host{
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{regexp.MustCompile(`^(launchpad\.net/([a-z0-9A-Z_.\-]+(/[a-z0-9A-Z_.\-]+)?|~[a-z0-9A-Z_.\-]+/(\+junk|[a-z0-9A-Z_.\-]+)/[a-z0-9A-Z_.\-]+))(/[a-z0-9A-Z_.\-/]+)?$`), "https", ""},
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},
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@ -240,20 +233,84 @@ func download(pkg, srcDir string) (public bool, err os.Error) {
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return
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}
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// Try to detect if a "release" tag exists. If it does, update
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// to the tagged version, otherwise just update the current branch.
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// NOTE(_nil): svn will always fail because it is trying to get
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// the revision history of a file named "release" instead of
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// looking for a commit with a release tag
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// updateRepo gets a list of tags in the repository and
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// checks out the tag closest to the current runtime.Version.
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// If no matching tag is found, it just updates to tip.
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func (v *vcs) updateRepo(dst string) os.Error {
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if err := quietRun(dst, nil, v.cmd, v.log, v.logLimitFlag, v.logReleaseFlag); err == nil {
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if err := run(dst, nil, v.cmd, v.checkout, v.updateReleaseFlag); err != nil {
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return err
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}
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} else if err := run(dst, nil, v.cmd, v.update); err != nil {
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if v.tagList == "" || v.tagListRe == nil {
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// TODO(adg): fix for svn
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return run(dst, nil, v.cmd, v.update)
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}
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// Get tag list.
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stderr := new(bytes.Buffer)
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cmd := exec.Command(v.cmd, v.tagList)
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cmd.Dir = dst
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cmd.Stderr = stderr
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b, err := cmd.Output()
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if err != nil {
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errorf("%s %s: %s\n", v.cmd, v.tagList, stderr)
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return err
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}
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return nil
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var tags []string
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for _, m := range v.tagListRe.FindAllStringSubmatch(string(b), -1) {
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tags = append(tags, m[1])
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}
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// Only use the tag component of runtime.Version.
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ver := strings.Split(runtime.Version(), " ")[0]
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// Select tag.
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if tag := selectTag(ver, tags); tag != "" {
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printf("selecting revision %q\n", tag)
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return run(dst, nil, v.cmd, v.checkout, v.updateRevFlag+tag)
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}
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// No matching tag found, make default selection.
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printf("selecting tip\n")
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return run(dst, nil, v.cmd, v.update)
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}
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// selectTag returns the closest matching tag for a given version.
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// Closest means the latest one that is not after the current release.
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// Version "release.rN" matches tags of the form "go.rN" (N being a decimal).
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// Version "weekly.YYYY-MM-DD" matches tags like "go.weekly.YYYY-MM-DD".
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func selectTag(goVersion string, tags []string) (match string) {
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const rPrefix = "release.r"
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if strings.HasPrefix(goVersion, rPrefix) {
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p := "go.r"
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v, err := strconv.Atof64(goVersion[len(rPrefix):])
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if err != nil {
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return ""
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}
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var matchf float64
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for _, t := range tags {
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if !strings.HasPrefix(t, p) {
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continue
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}
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tf, err := strconv.Atof64(t[len(p):])
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if err != nil {
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continue
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}
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if matchf < tf && tf <= v {
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match, matchf = t, tf
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}
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}
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}
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const wPrefix = "weekly."
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if strings.HasPrefix(goVersion, wPrefix) {
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p := "go.weekly."
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v := goVersion[len(wPrefix):]
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for _, t := range tags {
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if !strings.HasPrefix(t, p) {
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continue
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}
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if match < t && t[len(p):] <= v {
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match = t
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}
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}
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}
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return match
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}
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// checkoutRepo checks out repo into dst using vcs.
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73
src/cmd/goinstall/tag_test.go
Normal file
73
src/cmd/goinstall/tag_test.go
Normal file
@ -0,0 +1,73 @@
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// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package main
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import "testing"
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var selectTagTestTags = []string{
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"go.r58",
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"go.r58.1",
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"go.r59",
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"go.r59.1",
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"go.r61",
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"go.r61.1",
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"go.weekly.2010-01-02",
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"go.weekly.2011-10-12",
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"go.weekly.2011-10-12.1",
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"go.weekly.2011-10-14",
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"go.weekly.2011-11-01",
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// these should be ignored:
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"release.r59",
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"release.r59.1",
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"release",
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"weekly.2011-10-12",
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"weekly.2011-10-12.1",
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"weekly",
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"foo",
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"bar",
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"go.f00",
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"go!r60",
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"go.1999-01-01",
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}
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var selectTagTests = []struct {
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version string
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selected string
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}{
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{"release.r57", ""},
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{"release.r58.2", "go.r58.1"},
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{"release.r59", "go.r59"},
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{"release.r59.1", "go.r59.1"},
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{"release.r60", "go.r59.1"},
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{"release.r60.1", "go.r59.1"},
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{"release.r61", "go.r61"},
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{"release.r66", "go.r61.1"},
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{"weekly.2010-01-01", ""},
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{"weekly.2010-01-02", "go.weekly.2010-01-02"},
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{"weekly.2010-01-02.1", "go.weekly.2010-01-02"},
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{"weekly.2010-01-03", "go.weekly.2010-01-02"},
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{"weekly.2011-10-12", "go.weekly.2011-10-12"},
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{"weekly.2011-10-12.1", "go.weekly.2011-10-12.1"},
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{"weekly.2011-10-13", "go.weekly.2011-10-12.1"},
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{"weekly.2011-10-14", "go.weekly.2011-10-14"},
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{"weekly.2011-10-14.1", "go.weekly.2011-10-14"},
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{"weekly.2011-11-01", "go.weekly.2011-11-01"},
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{"weekly.2014-01-01", "go.weekly.2011-11-01"},
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{"weekly.3000-01-01", "go.weekly.2011-11-01"},
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// faulty versions:
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{"release.f00", ""},
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{"weekly.1999-01-01", ""},
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{"junk", ""},
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{"", ""},
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}
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func TestSelectTag(t *testing.T) {
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for _, c := range selectTagTests {
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selected := selectTag(c.version, selectTagTestTags)
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if selected != c.selected {
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t.Errorf("selectTag(%q) = %q, want %q", c.version, selected, c.selected)
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}
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}
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}
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@ -218,7 +218,6 @@ NOTEST+=\
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../cmd/cgo\
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../cmd/ebnflint\
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../cmd/godoc\
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../cmd/goinstall\
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../cmd/gotest\
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../cmd/goyacc\
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../cmd/hgpatch\
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