Add goreleaser support and -V flag for printing the version

.github/workflows/go.yml

@@ -1,5 +1,15 @@
 name: build
-on: [push, pull_request]
+
+on:
+  push:
+    branches:
+      - master
+      - main
+    tags:
+      - 'v*'
+  pull_request:
+
+
 jobs:
 
   test-build:
@@ -23,3 +33,13 @@ jobs:
 
     - name: Build
       run: go build ./...
+
+    - name: Run GoReleaser
+      uses: goreleaser/goreleaser-action@v2
+      # only release on tags
+      if: success() && startsWith(github.ref, 'refs/tags/')
+      with:
+        version: v0.156.1
+        args: release --rm-dist
+      env:
+        GITHUB_TOKEN: ${{ secrets.FAILLINT_ACTIONS_BOT_TOKEN }}

.goreleaser.yml

@@ -0,0 +1,37 @@
+project_name: faillint
+release:
+  prerelease: auto # don't publish release with -rc1,-pre, etc suffixes
+builds:
+  - env:
+      - CGO_ENABLED=0
+    goos:
+      - linux
+      - windows
+      - darwin
+    ldflags:
+     - -s -w -X main.version={{.Version}} -X main.date={{.Date}}
+    binary: "faillint"   
+nfpms:
+  - maintainer: Fatih Arslan
+    description: Report unwanted Go import path and declaration usages
+    homepage: https://github.com/fatih/faillint
+    license: BSD 3-Clause
+    formats:
+    - deb
+    - rpm
+    replacements:
+      darwin: macOS
+archives:
+  - replacements:
+      darwin: macOS
+    format_overrides:
+      - goos: windows
+        format: zip
+snapshot:
+  name_template: "{{ .Tag }}-next"
+changelog:
+  sort: asc
+  filters:
+    exclude:
+      - '^docs:'
+      - '^test:'

main.go

@@ -1,10 +1,31 @@
 package main
 
 import (
+	"flag"
+	"fmt"
+	"os"
+
 	"github.com/fatih/faillint/faillint"
 	"golang.org/x/tools/go/analysis/singlechecker"
 )
 
+var (
+	version string
+	date    string
+)
+
 func main() {
+	// this is a small hack to implement the -V flag that is part of
+	// go/analysis framework. It'll allow us to print the version with -V, but
+	// the --help message will print the flags of the analyzer
+	ff := flag.NewFlagSet("faillint", flag.ContinueOnError)
+	v := ff.Bool("V", false, "print version and exit")
+	ff.Usage = func() {}
+	ff.Parse(os.Args[1:])
+	if *v {
+		fmt.Printf("faillint version %s (%s)\n", version, date)
+		os.Exit(0)
+	}
+
 	singlechecker.Main(faillint.NewAnalyzer())
 }