posts/version.go

package main

import "runtime/debug"

// version is the release number shown on the About page. Bump it in the PR
// that makes a user-visible change.
const version = "0.2.1"

// buildCommit returns the short git revision that `go build` stamped into the
// binary, with "-dirty" if the tree had uncommitted changes, or "" if the
// binary was built outside a git checkout.
func buildCommit() string {
	info, ok := debug.ReadBuildInfo()
	if !ok {
		return ""
	}
	var rev string
	var dirty bool
	for _, s := range info.Settings {
		switch s.Key {
		case "vcs.revision":
			rev = s.Value
		case "vcs.modified":
			dirty = s.Value == "true"
		}
	}
	if len(rev) > 7 {
		rev = rev[:7]
	}
	if rev != "" && dirty {
		rev += "-dirty"
	}
	return rev
}