Replace two separate binaries with a single one

cmd/get.go

@@ -4,27 +4,28 @@ import (
 	"git-get/pkg"
 	"git-get/pkg/cfg"
 	"git-get/pkg/git"
+	"os"
 
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
 )
 
-const example = `  git get grdl/git-get
+const getExample = `  git get grdl/git-get
   git get https://github.com/grdl/git-get.git
   git get git@github.com:grdl/git-get.git
   git get -d path/to/dump/file`
 
-var cmd = &cobra.Command{
+func newGetCommand() *cobra.Command {
+	cmd := &cobra.Command{
 		Use:          "git get <REPO>",
 		Short:        "Clone git repository into an automatically created directory tree based on the repo's URL.",
-	Example:      example,
-	RunE:         run,
+		Example:      getExample,
+		RunE:         runGetCommand,
 		Args:         cobra.MaximumNArgs(1), // TODO: add custom validator
 		Version:      cfg.Version(),
 		SilenceUsage: true, // We don't want to show usage on legit errors (eg, wrong path, repo already existing etc.)
 	}
 
-func init() {
 	cmd.PersistentFlags().StringP(cfg.KeyBranch, "b", "", "Branch (or tag) to checkout after cloning.")
 	cmd.PersistentFlags().StringP(cfg.KeyDefaultHost, "t", cfg.Defaults[cfg.KeyDefaultHost], "Host to use when <REPO> doesn't have a specified host.")
 	cmd.PersistentFlags().StringP(cfg.KeyDefaultScheme, "c", cfg.Defaults[cfg.KeyDefaultScheme], "Scheme to use when <REPO> doesn't have a specified scheme.")
@@ -41,10 +42,10 @@ func init() {
 	viper.BindPFlag(cfg.KeyReposRoot, cmd.PersistentFlags().Lookup(cfg.KeyReposRoot))
 	viper.BindPFlag(cfg.KeySkipHost, cmd.PersistentFlags().Lookup(cfg.KeySkipHost))
 
-	cfg.Init(&git.ConfigGlobal{})
+	return cmd
 }
 
-func run(cmd *cobra.Command, args []string) error {
+func runGetCommand(cmd *cobra.Command, args []string) error {
 	var url string
 	if len(args) > 0 {
 		url = args[0]
@@ -64,6 +65,17 @@ func run(cmd *cobra.Command, args []string) error {
 	return pkg.Get(config)
 }
 
-func main() {
-	cmd.Execute()
+func runGet(args []string) {
+	// Initialize configuration
+	cfg.Init(&git.ConfigGlobal{})
+
+	// Create and execute the get command
+	cmd := newGetCommand()
+
+	// Set args for cobra to parse
+	cmd.SetArgs(args)
+
+	if err := cmd.Execute(); err != nil {
+		os.Exit(1)
+	}
 }

cmd/list.go

@@ -5,22 +5,23 @@ import (
 	"git-get/pkg"
 	"git-get/pkg/cfg"
 	"git-get/pkg/git"
+	"os"
 	"strings"
 
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
 )
 
-var cmd = &cobra.Command{
+func newListCommand() *cobra.Command {
+	cmd := &cobra.Command{
 		Use:          "git list",
 		Short:        "List all repositories cloned by 'git get' and their status.",
-	RunE:         run,
+		RunE:         runListCommand,
 		Args:         cobra.NoArgs,
 		Version:      cfg.Version(),
 		SilenceUsage: true, // We don't want to show usage on legit errors (eg, wrong path, repo already existing etc.)
 	}
 
-func init() {
 	cmd.PersistentFlags().BoolP(cfg.KeyFetch, "f", false, "First fetch from remotes before listing repositories.")
 	cmd.PersistentFlags().StringP(cfg.KeyOutput, "o", cfg.Defaults[cfg.KeyOutput], fmt.Sprintf("Output format. Allowed values: [%s].", strings.Join(cfg.AllowedOut, ", ")))
 	cmd.PersistentFlags().StringP(cfg.KeyReposRoot, "r", cfg.Defaults[cfg.KeyReposRoot], "Path to repos root where repositories are cloned.")
@@ -31,10 +32,10 @@ func init() {
 	viper.BindPFlag(cfg.KeyOutput, cmd.PersistentFlags().Lookup(cfg.KeyOutput))
 	viper.BindPFlag(cfg.KeyReposRoot, cmd.PersistentFlags().Lookup(cfg.KeyReposRoot))
 
-	cfg.Init(&git.ConfigGlobal{})
+	return cmd
 }
 
-func run(cmd *cobra.Command, args []string) error {
+func runListCommand(cmd *cobra.Command, args []string) error {
 	cfg.Expand(cfg.KeyReposRoot)
 
 	config := &pkg.ListCfg{
@@ -46,6 +47,17 @@ func run(cmd *cobra.Command, args []string) error {
 	return pkg.List(config)
 }
 
-func main() {
-	cmd.Execute()
+func runList(args []string) {
+	// Initialize configuration
+	cfg.Init(&git.ConfigGlobal{})
+
+	// Create and execute the list command
+	cmd := newListCommand()
+
+	// Set args for cobra to parse
+	cmd.SetArgs(args)
+
+	if err := cmd.Execute(); err != nil {
+		os.Exit(1)
+	}
 }

cmd/main.go

@@ -0,0 +1,61 @@
+package main
+
+import (
+	"os"
+	"path/filepath"
+	"strings"
+)
+
+func main() {
+	// This program behaves as a git subcommand (see https://git.github.io/htmldocs/howto/new-command.html)
+	// When added to PATH, git recognizes it as its subcommand and it can be invoked as "git get..." or "git list..."
+	// It can also be invoked as a regular binary with subcommands: "git-get get..." or "git-get list"
+	// The following flow detects the invokation method and runs the appropriate command.
+
+	programName := filepath.Base(os.Args[0])
+
+	// Remove common executable extensions
+	programName = strings.TrimSuffix(programName, ".exe")
+
+	// Determine which command to run based on program name or first argument
+	var command string
+	var args []string
+
+	switch programName {
+	case "git-get":
+		// Check if first argument is a subcommand
+		if len(os.Args) > 1 && (os.Args[1] == "get" || os.Args[1] == "list") {
+			// Called as: git-get get <repo> or git-get list
+			command = os.Args[1]
+			args = os.Args[2:]
+		} else {
+			// Called as: git-get <repo> (default to get command)
+			command = "get"
+			args = os.Args[1:]
+		}
+	case "git-list":
+		// Called as: git-list (symlinked binary)
+		command = "list"
+		args = os.Args[1:]
+	default:
+		// Fallback: use first argument as command
+		if len(os.Args) > 1 {
+			command = os.Args[1]
+			args = os.Args[2:]
+		} else {
+			command = "get"
+			args = []string{}
+		}
+	}
+
+	// Execute the appropriate command
+	switch command {
+	case "get":
+		runGet(args)
+	case "list":
+		runList(args)
+	default:
+		// Default to get command for unknown commands
+		runGet(os.Args[1:])
+	}
+}