Function checkoutBranch

pkg/cmd/issue/develop/develop.go:321–370

(opts *DevelopOptions, branchRepo ghrepo.Interface, checkoutBranch string)

}

func checkoutBranch(opts *DevelopOptions, branchRepo ghrepo.Interface, checkoutBranch string) (err error) {
	remotes, err := opts.Remotes()
	if err != nil {
		// If the user specified the branch to be checked out and no remotes are found
		// display an error. Otherwise bail out silently, likely the command was not
		// run from inside a git directory.
		if opts.Checkout {
			return err
		} else {
			return nil
		}
	}

	baseRemote, err := remotes.FindByRepo(branchRepo.RepoOwner(), branchRepo.RepoName())
	if err != nil {
		// If the user specified the branch to be checked out and no remote matches the
		// base repo, then display an error. Otherwise bail out silently.
		if opts.Checkout {
			return err
		} else {
			return nil
		}
	}

	gc := opts.GitClient

	if err := gc.Fetch(ctx.Background(), baseRemote.Name, fmt.Sprintf("+refs/heads/%[1]s:refs/remotes/%[2]s/%[1]s", checkoutBranch, baseRemote.Name)); err != nil {
		return err
	}

	if !opts.Checkout {
		return nil
	}

	if gc.HasLocalBranch(ctx.Background(), checkoutBranch) {
		if err := gc.CheckoutBranch(ctx.Background(), checkoutBranch); err != nil {
			return err
		}

		if err := gc.Pull(ctx.Background(), baseRemote.Name, checkoutBranch); err != nil {
			_, _ = fmt.Fprintf(opts.IO.ErrOut, "%s warning: not possible to fast-forward to: %q\n", opts.IO.ColorScheme().WarningIcon(), checkoutBranch)
		}
	} else {
		if err := gc.CheckoutNewBranch(ctx.Background(), baseRemote.Name, checkoutBranch); err != nil {
			return err
		}
	}

	return nil
}