add version

.gitignore

@@ -0,0 +1 @@
+dist/*

cmd/root.go

@@ -6,6 +6,7 @@ import (
 	"os"
 	"time"
 
+	"github.com/liujianping/ts/version"
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
 )
@@ -28,6 +29,10 @@ func RootCmd() *cobra.Command {
 	(timezone)		$: ts -f "2019/06/25 23:30:10" -z "Asia/Shanghai"	
 	`,
 		Run: func(cmd *cobra.Command, args []string) {
+			if viper.GetBool("version") {
+				fmt.Println(version.String())
+				os.Exit(0)
+			}
 			//pipe stdin
 			if len(args) == 0 {
 				info, err := os.Stdin.Stat()
@@ -42,7 +47,7 @@ func RootCmd() *cobra.Command {
 			exitForErr(Main(cmd, args))
 		},
 	}
-
+	cmd.Flags().BoolP("version", "v", false, "current version")
 	cmd.Flags().StringP("after", "a", "", "after compare")
 	cmd.Flags().StringP("before", "b", "", "before compare")
 	cmd.Flags().StringP("format", "f", "", "time format")

go.mod

@@ -7,5 +7,6 @@ require (
 	github.com/mitchellh/go-homedir v1.1.0
 	github.com/spf13/cobra v0.0.5
 	github.com/spf13/viper v1.4.0
+	github.com/stretchr/testify v1.2.2
 	github.com/x-mod/errors v0.1.5
 )

main.go

@@ -14,8 +14,18 @@
 
 package main
 
-import "github.com/liujianping/ts/cmd"
+import (
+	"github.com/liujianping/ts/cmd"
+	ver "github.com/liujianping/ts/version"
+)
+
+var (
+	version = "dev"
+	commit  = "none"
+	date    = "unknown"
+)
 
 func main() {
+	ver.Info(version, commit, date)
 	cmd.Execute()
 }

version/version.go

@@ -0,0 +1,21 @@
+package version
+
+import "fmt"
+
+var (
+	version = "dev"
+	commit  = "none"
+	date    = "unknown"
+)
+
+//String version
+func String() string {
+	return fmt.Sprintf("%v, commit %v, built at %v", version, commit, date)
+}
+
+//Info build info
+func Info(v, m, d string) {
+	version = v
+	commit = m
+	date = d
+}

version/version_test.go

@@ -0,0 +1,28 @@
+package version
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+)
+
+func TestVersion(t *testing.T) {
+	tests := []struct {
+		name string
+		want string
+	}{
+		{
+			"default",
+			"dev, commit none, built at unknown",
+		},
+	}
+	for _, tt := range tests {
+		t.Run(tt.name, func(t *testing.T) {
+			if got := String(); got != tt.want {
+				t.Errorf("String() = %v, want %v", got, tt.want)
+			}
+		})
+	}
+	Info("v0.0.1", "now", "timestamp")
+	assert.Equal(t, "v0.0.1, commit now, built at timestamp", String())
+}