From e1e2df656a46c428bfb487e5ec3d126905ff003e Mon Sep 17 00:00:00 2001 From: Felix Lange Date: Mon, 21 Nov 2016 12:44:42 +0100 Subject: internal/build: add support for git tag in local Environment I didn't add this initially because the command I tried was too slow. The 'git for-each-ref ...' invocation takes 40ms on my machine. That ought to be acceptable. --- internal/build/env.go | 5 +++-- internal/build/util.go | 7 ++++++- 2 files changed, 9 insertions(+), 3 deletions(-) (limited to 'internal') diff --git a/internal/build/env.go b/internal/build/env.go index cd3355092..95281df86 100644 --- a/internal/build/env.go +++ b/internal/build/env.go @@ -88,8 +88,9 @@ func LocalEnv() Environment { env.Branch = b } } - // Note that we don't get the current git tag. It would slow down - // builds and isn't used by anything. + if env.Tag == "" { + env.Tag = RunGit("for-each-ref", "--points-at=HEAD", "--count=1", "--format=%(refname:short)", "refs/tags") + } return env } diff --git a/internal/build/util.go b/internal/build/util.go index c7e0614f2..1523a067b 100644 --- a/internal/build/util.go +++ b/internal/build/util.go @@ -76,6 +76,8 @@ func VERSION() string { return string(bytes.TrimSpace(version)) } +var warnedAboutGit bool + // RunGit runs a git subcommand and returns its output. // The command must complete successfully. func RunGit(args ...string) string { @@ -83,7 +85,10 @@ func RunGit(args ...string) string { var stdout, stderr bytes.Buffer cmd.Stdout, cmd.Stderr = &stdout, &stderr if err := cmd.Run(); err == exec.ErrNotFound { - log.Println("no git in PATH") + if !warnedAboutGit { + log.Println("Warning: can't find 'git' in PATH") + warnedAboutGit = true + } return "" } else if err != nil { log.Fatal(strings.Join(cmd.Args, " "), ": ", err, "\n", stderr.String()) -- cgit