feat: add Homebrew formula configuration and version flag to dotcat CLI

- Introduced Homebrew formula configuration in .goreleaser.yml for easier installation and management of the dotcat CLI.
- Added version information display in the CLI, allowing users to check the current version, commit, and build date.
- Enhanced command-line flags to include a version flag for improved user experience.

Author: arthur-debert

.goreleaser.yml

@@ -46,6 +46,28 @@ changelog:
       - "Merge pull request"
       - "Merge branch"
 
+brews:
+  - name: "{{ if .Env.PKG_NAME }}{{ .Env.PKG_NAME }}{{ else }}dotcat{{ end }}"
+    repository:
+      owner: adebert
+      name: homebrew-tools
+      token: "{{ .Env.HOMEBREW_TAP_TOKEN }}"
+    directory: "Formula"
+    commit_author:
+      name: goreleaserbot
+      email: bot@goreleaser.com
+    homepage: "https://github.com/adebert/dotcat"
+    description: "A CLI utility for reading values from structured data files."
+    license: "MIT"
+    test: |
+      system "#{bin}/{{ if .Env.PKG_NAME }}{{ .Env.PKG_NAME }}{{ else }}dotcat{{ end }} --version"
+    install: |
+      bin.install "{{ if .Env.PKG_NAME }}{{ .Env.PKG_NAME }}{{ else }}dotcat{{ end }}"
+      man1.install "man/man1/{{ if .Env.PKG_NAME }}{{ .Env.PKG_NAME }}{{ else }}dotcat{{ end }}.1"
+      bash_completion.install "completions/{{ if .Env.PKG_NAME }}{{ .Env.PKG_NAME }}{{ else }}dotcat{{ end }}.bash" => "{{ if .Env.PKG_NAME }}{{ .Env.PKG_NAME }}{{ else }}dotcat{{ end }}"
+      zsh_completion.install "completions/_{{ if .Env.PKG_NAME }}{{ .Env.PKG_NAME }}{{ else }}dotcat{{ end }}" => "_{{ if .Env.PKG_NAME }}{{ .Env.PKG_NAME }}{{ else }}dotcat{{ end }}"
+      fish_completion.install "completions/{{ if .Env.PKG_NAME }}{{ .Env.PKG_NAME }}{{ else }}dotcat{{ end }}.fish"
+
 # nFPM packages (deb, rpm, etc.)
 # https://goreleaser.com/customization/nfpm/
 nfpms:

cmd/app/main.go

@@ -10,14 +10,28 @@ import (
 	"github.com/adebert/dotcat/internal/formatter"
 )
 
+// Version information - will be set during build
+var (
+	version = "dev"
+	commit  = "none"
+	date    = "unknown"
+)
+
 var outputFormat string
+var showVersion bool
 
 var rootCmd = &cobra.Command{
 	Use:   "dotcat [file] [dotted_path]",
 	Short: "Get a value from a structured data file using a dotted path",
 	Long: `dotcat allows you to read a value from a structured data file
 (JSON, YAML, TOML, or INI) using a dot-separated path to the desired key.`,
 	RunE: func(cmd *cobra.Command, args []string) error {
+		// If version flag is provided, print version and exit
+		if showVersion {
+			fmt.Printf("dotcat version %s, commit %s, built at %s\n", version, commit, date)
+			return nil
+		}
+	
 		if len(args) != 2 {
 			fmt.Println("Usage: ")
 			fmt.Println("dotcat  <file> <variable path> ")
@@ -52,6 +66,7 @@ var rootCmd = &cobra.Command{
 
 func init() {
 	rootCmd.Flags().StringVarP(&outputFormat, "output", "o", "raw", "Output format (raw, json, yaml, toml, ini)")
+	rootCmd.Flags().BoolVarP(&showVersion, "version", "v", false, "Show version information")
 }
 
 func main() {