func loadVersion()

in version.go [21:84]
51 lines of code
13 McCabe index (conditional complexity)

func loadVersion() Version {
	rv := Version{
		Version:   "unknown",
		GoVersion: "unknown",
		BuildTime: "unknown",
		Platform:  runtime.GOOS + "/" + runtime.GOARCH,
	}
	if gitTag != "" {
		rv.Version = gitTag
	}

	buildInfo, ok := debug.ReadBuildInfo()
	if !ok {
		return rv
	}

	rv.GoVersion = buildInfo.GoVersion

	var (
		modified  bool
		revision  string
		buildTime string
	)
	for _, s := range buildInfo.Settings {
		if s.Value == "" {
			continue
		}

		switch s.Key {
		case "vcs.revision":
			revision = s.Value
		case "vcs.modified":
			modified = s.Value == "true"
		case "vcs.time":
			buildTime = s.Value
		}
	}

	// in Go install mode, this is a known issue that vcs information will not be available.
	// ref: https://github.com/golang/go/issues/51279
	// Fallback to use module version and stop here as vcs information is incomplete.
	if revision == "" {
		if buildInfo.Main.Version != "(devel)" {
			// fallback to use module version (legacy usage)
			rv.Version = buildInfo.Main.Version
		}

		return rv
	}

	if modified {
		revision += "-dirty"
	}
	if gitTag != "" {
		revision = gitTag + "/" + revision
	}
	rv.Version = revision

	if buildTime != "" {
		rv.BuildTime = buildTime
	}

	return rv
}