Merge pull request #71 from catatsuy/feature_use_debug_read_build_info

use debug.ReadBuildInfo

.github/workflows/go.yml

@@ -7,7 +7,7 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        go: [ '1.14.x' ]
+        go: [ '1.15.x' ]
     steps:
 
     - name: Set up Go

.github/workflows/release.yml

@@ -12,7 +12,7 @@ jobs:
       - name: Setup Go
         uses: actions/setup-go@v1
         with:
-          go-version: 1.14
+          go-version: 1.15
       - name: Run GoReleaser
         uses: goreleaser/goreleaser-action@v1
         with:

.goreleaser.yml

@@ -9,7 +9,7 @@ builds:
     binary: notify_slack
     ldflags:
       - -s -w
-      - -X github.com/catatsuy/notify_slack/cli.Version={{.Version}}
+      - -X github.com/catatsuy/notify_slack/cli.Version=v{{.Version}}
     env:
       - CGO_ENABLED=0
     goarch:

README.md

@@ -14,7 +14,7 @@ If you have a development environment for the Go language, you can compile and i
 GO111MODULE=on go get github.com/catatsuy/notify_slack/cmd/notify_slack
 ```
 
-If you want to develop it, you can use the `make`. It requires Go 1.13 or higher.
+If you want to develop it, you can use the `make`. It requires Go 1.15 or higher.
 
 ```
 make

cli/cli.go

@@ -9,6 +9,7 @@ import (
 	"os"
 	"os/signal"
 	"runtime"
+	"runtime/debug"
 	"syscall"
 	"time"
 
@@ -31,12 +32,25 @@ type CLI struct {
 	outStream, errStream io.Writer
 	inputStream          io.Reader
 
-	sClient slack.Slack
-	conf    *config.Config
+	sClient    slack.Slack
+	conf       *config.Config
+	appVersion string
 }
 
 func NewCLI(outStream, errStream io.Writer, inputStream io.Reader) *CLI {
-	return &CLI{outStream: outStream, errStream: errStream, inputStream: inputStream}
+	return &CLI{appVersion: version(), outStream: outStream, errStream: errStream, inputStream: inputStream}
+}
+
+func version() string {
+	if Version != "" {
+		return Version
+	}
+
+	info, ok := debug.ReadBuildInfo()
+	if !ok {
+		return "(devel)"
+	}
+	return info.Main.Version
 }
 
 func (c *CLI) Run(args []string) int {
@@ -73,7 +87,7 @@ func (c *CLI) Run(args []string) int {
 	}
 
 	if version {
-		fmt.Fprintf(c.errStream, "notify_slack version %s; %s\n", Version, runtime.Version())
+		fmt.Fprintf(c.errStream, "notify_slack version %s; %s\n", c.appVersion, runtime.Version())
 		return ExitCodeOK
 	}