Function UpdateRepo

pkgs/git/control.go:158–252

UpdateRepo update git repo.

(target, repoRef, repoDir string, force bool)

// UpdateRepo update git repo.
func UpdateRepo(target, repoRef, repoDir string, force bool) error {
	if !fileio.PathExists(repoDir) {
		return errors.ErrDirNotExist
	}
	if !fileio.PathExists(filepath.Join(repoDir, ".git")) {
		return errors.ErrNotGitDir
	}

	// Check if repo is modified.
	modified, err := IsModified(repoDir)
	if err != nil {
		return err
	}
	if modified {
		if !force {
			return fmt.Errorf("repository has local modifications, update is skipped - you can update forcibly with -f/--force")
		}
	}

	// Get default branch if repoRef is empty.
	if repoRef == "" {
		branch, err := GetDefaultBranch(target, repoDir)
		if err != nil {
			return err
		}
		repoRef = branch
	}

	// Get repo URL.
	repoUrl, err := GetRepoUrl(repoDir)
	if err != nil {
		return err
	}

	// Update to a specific commit hash: fetch then hard-reset.
	if CheckIsCommitHash(repoRef) {
		if err := HardReset(repoDir, repoRef); err != nil {
			return fmt.Errorf("failed to update %s to commit '%s' -> %w", target, repoRef, err)
		}
		return nil
	}

	// Update to branch.
	isBranch, err := CheckIfRemoteBranch(target, repoUrl, repoRef)
	if err != nil {
		return err
	}
	if isBranch {
		commands := []string{
			"git reset --hard",
			"git clean -ffdx",
			"git fetch origin " + repoRef,
			"git checkout -B " + repoRef + " origin/" + repoRef,
			"git pull origin " + repoRef,
		}
		commandLine := strings.Join(commands, " && ")
		executor := cmd.NewExecutor("[update "+target+"]", commandLine)
		executor.SetWorkDir(repoDir)