mox!

moxvar/version.go

@@ -0,0 +1,38 @@
+// Package moxvar provides the version number of a mox build.
+package moxvar
+
+import (
+	"runtime/debug"
+)
+
+// Version is set at runtime based on the Go module used to build.
+var Version = "(devel)"
+
+func init() {
+	buildInfo, ok := debug.ReadBuildInfo()
+	if !ok {
+		return
+	}
+	Version = buildInfo.Main.Version
+	if Version == "(devel)" {
+		var vcsRev, vcsMod string
+		for _, setting := range buildInfo.Settings {
+			if setting.Key == "vcs.revision" {
+				vcsRev = setting.Value
+			} else if setting.Key == "vcs.modified" {
+				vcsMod = setting.Value
+			}
+		}
+		if vcsRev == "" {
+			return
+		}
+		Version = vcsRev
+		switch vcsMod {
+		case "false":
+		case "true":
+			Version += "+modifications"
+		default:
+			Version += "+unknown"
+		}
+	}
+}