basic clone capabilities

main.go

@@ -0,0 +1,119 @@
+package main
+
+import (
+	"fmt"
+	"net/url"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"regexp"
+	"strings"
+)
+
+const GHQDir = "ghq"
+
+// GitURL holds the parsed structure of the repository
+type GitURL struct {
+	Original string
+	Host     string
+	Path     string // This includes namespace/repo (e.g. "juancwu/tools")
+}
+
+func main() {
+	args := os.Args[1:]
+
+	if len(args) != 1 {
+		printUsage()
+		os.Exit(1)
+	}
+
+	rawURL := args[0]
+
+	repoInfo, err := parseGitURL(rawURL)
+	if err != nil {
+		fmt.Printf("Error parsing URL: %v\n", err)
+		os.Exit(1)
+	}
+
+	homeDir, err := os.UserHomeDir()
+	if err != nil {
+		fmt.Printf("Error getting home directory: %v\n", err)
+		os.Exit(1)
+	}
+
+	targetDir := filepath.Join(homeDir, GHQDir, repoInfo.Host, repoInfo.Path)
+
+	if err := cloneRepo(repoInfo.Original, targetDir); err != nil {
+		os.Exit(1)
+	}
+}
+
+// parseGitURL extracts the Host and Path from SSH (SCP-syntax) or HTTP/Standard URLs
+func parseGitURL(raw string) (*GitURL, error) {
+	raw = strings.TrimSpace(raw)
+
+	// Regex for SCP-like syntax: user@host:path/to/repo.git
+	// Matches: git@github.com:user/repo.git
+	scpSyntax := regexp.MustCompile(`^[\w-]+@([^:]+):(.+?)(?:\.git)?$`)
+
+	if match := scpSyntax.FindStringSubmatch(raw); match != nil {
+		return &GitURL{
+			Original: raw,
+			Host:     match[1],
+			Path:     match[2],
+		}, nil
+	}
+
+	// Standard URL parsing for http, https, ssh://
+	u, err := url.Parse(raw)
+	if err != nil {
+		return nil, fmt.Errorf("invalid URL format: %w", err)
+	}
+
+	if u.Host == "" {
+		return nil, fmt.Errorf("URL is missing a host (e.g. github.com)")
+	}
+
+	cleanPath := strings.TrimPrefix(u.Path, "/")
+	cleanPath = strings.TrimSuffix(cleanPath, ".git")
+
+	return &GitURL{
+		Original: raw,
+		Host:     u.Host,
+		Path:     cleanPath,
+	}, nil
+}
+
+func cloneRepo(url, targetDir string) error {
+	// Check if directory already exists
+	if _, err := os.Stat(targetDir); !os.IsNotExist(err) {
+		fmt.Printf("Directory already exists: %s\n", targetDir)
+		return nil
+	}
+
+	fmt.Printf("Cloning into: %s\n", targetDir)
+
+	cmd := exec.Command("git", "clone", url, targetDir)
+	// Pipe git output directly to the user's terminal
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	cmd.Stdin = os.Stdin
+
+	if err := cmd.Run(); err != nil {
+		return fmt.Errorf("git clone failed: %w", err)
+	}
+	return nil
+}
+
+func printUsage() {
+	fmt.Println(`Usage: cl <repository_url>
+
+Description:
+  Clones a git repository into a structured directory tree:
+  ~/ghq/<domain>/<user>/<repo>
+
+Examples:
+  cl git@github.com:user/project.git
+  cl https://gitlab.com/group/subgroup/project.git
+  cl https://git.company.corp/devops/tools.git`)
+}