feat: version

main.go

@@ -18,6 +18,8 @@ func main() {
 		convertLyrics(os.Args[2:])
 	case "fmt":
 		fmtLyrics(os.Args[2:])
+	case "version":
+		fmt.Printf("lyc-cli version %s\n", VERSION)
 	case "help":
 		fmt.Println(USAGE)
 	default:

model.go

@@ -6,14 +6,17 @@ type Lyrics struct {
 	Content  []string
 }
 
-const USAGE = `Usage: lyc-cli [command] [options]
-Commands:
+const (
+	VERSION = "0.2.0"
+	USAGE   = `Usage: lyc-cli [command] [options]
+  Commands:
     sync	Synchronize timeline of two lyrics files
     convert	Convert lyrics file to another format
     help	Show help`
 
-const SYNC_USAGE = `Usage: lyc-cli sync <source> <target>`
-const CONVERT_USAGE = `Usage: lyc-cli convert <source> <target>
-Note:
-Target format is determined by file extension. Supported formats:
+	SYNC_USAGE    = `Usage: lyc-cli sync <source> <target>`
+	CONVERT_USAGE = `Usage: lyc-cli convert <source> <target>
+  Note:
+  Target format is determined by file extension. Supported formats:
     .txt	Plain text format(No meta/timeline tags)`
+)