Expose module version (#53)

Author: vearutop

version/info.go

@@ -12,6 +12,7 @@ var (
 	buildUser    string
 	buildDate    string
 	dependencies map[string]string
+	main         string
 )
 
 // Information holds app version info.
@@ -38,6 +39,20 @@ func Info() Information {
 	}
 }
 
+// Module returns module version info.
+func Module(path string) Information {
+	info := Info()
+
+	if main == path {
+		return info
+	}
+
+	ver := dependencies[path]
+	info.Version = ver
+
+	return info
+}
+
 // String return version information as string.
 func (i Information) String() string {
 	res := ""

version/mod.go

@@ -18,6 +18,8 @@ func init() {
 			buildDate = "(unknown)"
 		}
 
+		main = info.Main.Path
+
 		dependencies = make(map[string]string, len(info.Deps))
 		for _, dep := range info.Deps {
 			dependencies[dep.Path] = dep.Version