feat: show version

.goreleaser.yml

@@ -9,6 +9,14 @@ builds:
     - linux
     - darwin
     - windows
+  goarch:
+    - 386
+    - amd64
+    - arm
+    - arm64
+  ignore:
+    - goos: darwin
+      goarch: 386
 checksum:
   name_template: 'checksums.txt'
 snapshot:
@@ -19,3 +27,13 @@ changelog:
     exclude:
     - '^docs:'
     - '^test:'
+brews:
+  -
+    github:
+      owner: wolfogre
+      name: homebrew-tap
+    folder: Formula
+    homepage: "https://github.com/wolfogre/gtag"
+    description: "Help you to get golang struct's tags elegantly."
+    test: system "#{bin}/gtag -version"
+    install: bin.install "gtag"

cmd/gtag/main.go

@@ -11,13 +11,26 @@ import (
 )
 
 var (
-	Types = flag.String("types", "", "struct types")
-	Tags  = flag.String("tags", "", "preset tags")
+	version = "dev"
+	commit  = "none"
+	date    = "unknown"
+	builtBy = "unknown"
+)
+
+var (
+	Types   = flag.String("types", "", "struct types")
+	Tags    = flag.String("tags", "", "preset tags")
+	Version = flag.Bool("version", false, " show version")
 )
 
 func main() {
 	flag.Parse()
 
+	if *Version {
+		fmt.Printf("gtag %s, commit %s, built at %s by %s\n", version, commit, date, builtBy)
+		return
+	}
+
 	args := flag.Args()
 	if *Types == "" || len(args) != 1 {
 		printUsages()