Set release workflow

.github/workflows/release.yml

@@ -0,0 +1,42 @@
+name: goreleaser
+
+on:
+  push:
+    # run only against tags
+    tags:
+      - '*'
+
+permissions:
+  contents: write
+  # packages: write
+  # issues: write
+
+jobs:
+  goreleaser:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v2
+        with:
+          fetch-depth: 0
+      -
+        name: Fetch all tags
+        run: git fetch --force --tags
+      -
+        name: Set up Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.18
+      -
+        name: Run GoReleaser
+        uses: goreleaser/goreleaser-action@v2
+        with:
+          # either 'goreleaser' (default) or 'goreleaser-pro'
+          distribution: goreleaser
+          version: latest
+          args: release --rm-dist
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          # Your GoReleaser Pro key, if you are using the 'goreleaser-pro' distribution
+          # GORELEASER_KEY: ${{ secrets.GORELEASER_KEY }}

.goreleaser.yaml

@@ -0,0 +1,37 @@
+# This is an example .goreleaser.yml file with some sensible defaults.
+# Make sure to check the documentation at https://goreleaser.com
+before:
+  hooks:
+    # You may remove this if you don't use go modules.
+    - go mod tidy
+    # you may remove this if you don't need go generate
+    - go generate ./...
+builds:
+  - env:
+      - CGO_ENABLED=0
+    goos:
+      - linux
+      - windows
+      - darwin
+    ldflags:
+      - -w -s -X main.appVersion={{.Version}} -X main.appRevision={{.ShortCommit}} -X main.appBuildDate={{.Date}}
+archives:
+  - replacements:
+      darwin: Darwin
+      linux: Linux
+      windows: Windows
+      386: i386
+      amd64: x86_64
+    format_overrides:
+      - goos: windows
+        format: zip
+checksum:
+  name_template: 'checksums.txt'
+snapshot:
+  name_template: "{{ incpatch .Version }}-next"
+changelog:
+  sort: asc
+  filters:
+    exclude:
+      - '^docs:'
+      - '^test:'

main.go

@@ -10,6 +10,12 @@ import (
 	color "github.com/fatih/color"
 )
 
+var (
+	appVersion   = "unknown"
+	appRevision  = "unknown"
+	appBuildDate = "unknown"
+)
+
 type asciiArt string
 
 const (
@@ -39,11 +45,19 @@ var (
 
 var stdout = bufio.NewWriter(os.Stdout)
 
-var length int
+var (
+	length  int
+	version bool
+)
 
 func main() {
-	flag.IntVar(&length, "l", 10, "length")
+	flag.IntVar(&length, "l", 10, "length of gopher's body")
+	flag.BoolVar(&version, "V", false, "show version")
 	flag.Parse()
+	if version {
+		fmt.Printf("v%s-%s\nBuild at %s\n", appVersion, appRevision, appBuildDate)
+		return
+	}
 	printGopher(length)
 }