Initial commit

1 files changed, 105 insertions, 0 deletions

diff --git a/git-shell-commands.go b/git-shell-commands.go
new file mode 100644
index 0000000..0e9ea44
--- /dev/null
+++ b/git-shell-commands.go
@@ -0,0 +1,105 @@
+package main
+
+import (
+	"errors"
+	"flag"
+	"fmt"
+	"io/fs"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+)
+
+const codeDir = "/nezuko/code/"
+
+func checkRepoName(name string) (string, error) {
+	if strings.Contains(name, "/") {
+		return "", fmt.Errorf("invalid name %q: contains slashes")
+	}
+	if !strings.HasSuffix(name, ".git") {
+		name += ".git"
+	}
+	return name, nil
+}
+
+func create() error {
+	flag.Usage = func() {
+		fmt.Fprintf(os.Stderr, `Usage: create [REPO]
+Create a new git repo named REPO.
+`)
+	}
+	flag.Parse()
+	args := flag.Args()
+	if len(args) == 0 {
+		return fmt.Errorf("missing positional argument")
+	}
+	if len(args) > 1 {
+		return fmt.Errorf("too many positional arguments")
+	}
+	name, err := checkRepoName(args[0])
+	if err != nil {
+		return err
+	}
+	dir := filepath.Join(codeDir, name)
+	fmt.Printf("mkdir %s\n", dir)
+	if err := os.Mkdir(dir, 0755); err != nil {
+		return err
+	}
+	fmt.Printf("cd %s && git init --bare\n", dir)
+	git := exec.Command("git", "init", "--bare")
+	git.Dir = dir
+	git.Stdout = os.Stdout
+	git.Stderr = os.Stderr
+	if err := git.Run(); err != nil {
+		return err
+	}
+	return nil
+}
+
+func fileExists(path string) bool {
+	_, err := os.Stat(path)
+	return !errors.Is(err, fs.ErrNotExist)
+}
+
+func delete() error {
+	flag.Usage = func() {
+		fmt.Fprintf(os.Stderr, `Usage: delete [REPO]
+Delete the git repo named REPO.
+`)
+	}
+	flag.Parse()
+	args := flag.Args()
+	if len(args) == 0 {
+		return fmt.Errorf("missing positional argument")
+	}
+	if len(args) > 1 {
+		return fmt.Errorf("too many positional arguments")
+	}
+	name, err := checkRepoName(args[0])
+	if err != nil {
+		return err
+	}
+	dir := filepath.Join(codeDir, name)
+	fmt.Printf("rm -rf %s\n", dir)
+	if !fileExists(dir) {
+		return fmt.Errorf("repo %q does not exist", name)
+	}
+	if err := os.RemoveAll(dir); err != nil {
+		return err
+	}
+	return nil
+}
+
+func main() {
+	var err error
+	if filepath.Base(os.Args[0]) == "delete" {
+		err = delete()
+	} else {
+		err = create()
+	}
+	if err != nil {
+		fmt.Fprintln(os.Stderr, err)
+		os.Exit(1)
+	}
+}