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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", name)
}
if !strings.HasSuffix(name, ".git") {
name += ".git"
}
return name, nil
}
func checkRepoNames(args []string) ([]string, error) {
if len(args) == 0 {
return nil, fmt.Errorf("missing operand\nUse %s -help for usage info", filepath.Base(os.Args[0]))
}
names := make([]string, len(args))
var errs []error
for i, arg := range args {
var err error
names[i], err = checkRepoName(arg)
if err != nil {
errs = append(errs, err)
}
}
if len(errs) > 0 {
return nil, errors.Join(errs...)
}
return names, nil
}
func createRepo(name string) error {
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
}
hook := filepath.Join(dir, "hooks/post-update")
hookSample := hook + ".sample"
fmt.Printf("mv %s %s\n", hookSample, hook)
if err := os.Rename(hookSample, hook); err != nil {
return err
}
return nil
}
func create() {
flag.Usage = func() {
fmt.Fprintf(os.Stderr, `Usage: create [REPO]...
Create a new git repo named REPO.
`)
}
flag.Parse()
names, err := checkRepoNames(flag.Args())
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
exitCode := 0
for _, name := range names {
if err := createRepo(name); err != nil {
fmt.Fprintln(os.Stderr, err)
exitCode = 1
}
}
os.Exit(exitCode)
}
func fileExists(path string) bool {
_, err := os.Stat(path)
return !errors.Is(err, fs.ErrNotExist)
}
func deleteRepo(name string) error {
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 delete() {
flag.Usage = func() {
fmt.Fprintf(os.Stderr, `Usage: delete [REPO]...
Delete the git repo named REPO.
`)
}
flag.Parse()
names, err := checkRepoNames(flag.Args())
if err != nil {
fmt.Fprintln(os.Stderr, err)
os.Exit(1)
}
exitCode := 0
for _, name := range names {
if err := deleteRepo(name); err != nil {
fmt.Fprintln(os.Stderr, err)
exitCode = 1
}
}
os.Exit(exitCode)
}
func help() {
fmt.Printf(`Available commands:
create create a new git repo
delete delete a git repo
help print this message
`)
}
func main() {
switch filepath.Base(os.Args[0]) {
case "create":
create()
case "delete":
delete()
default:
help()
}
}
|
