Method Commit

worktree_commit.go:35–101

Commit stores the current contents of the index in a new commit along with a log message from the user describing the changes.

(msg string, opts *CommitOptions)

// Commit stores the current contents of the index in a new commit along with
// a log message from the user describing the changes.
func (w *Worktree) Commit(msg string, opts *CommitOptions) (plumbing.Hash, error) {
	if err := opts.Validate(w.r); err != nil {
		return plumbing.ZeroHash, err
	}

	if opts.All {
		if err := w.autoAddModifiedAndDeleted(); err != nil {
			return plumbing.ZeroHash, err
		}
	}

	if opts.Amend {
		head, err := w.r.Head()
		if err != nil {
			return plumbing.ZeroHash, err
		}
		headCommit, err := w.r.CommitObject(head.Hash())
		if err != nil {
			return plumbing.ZeroHash, err
		}

		opts.Parents = nil
		if len(headCommit.ParentHashes) != 0 {
			opts.Parents = []plumbing.Hash{headCommit.ParentHashes[0]}
		}
	}

	idx, err := w.r.Storer.Index()
	if err != nil {
		return plumbing.ZeroHash, err
	}

	// First handle the case of the first commit in the repository being empty.
	if len(opts.Parents) == 0 && len(idx.Entries) == 0 && !opts.AllowEmptyCommits {
		return plumbing.ZeroHash, ErrEmptyCommit
	}

	h := &buildTreeHelper{
		fs: w.Filesystem,
		s:  w.r.Storer,
	}

	treeHash, err := h.BuildTree(idx, opts)
	if err != nil {
		return plumbing.ZeroHash, err
	}

	previousTree := plumbing.ZeroHash
	if len(opts.Parents) > 0 {
		parentCommit, err := w.r.CommitObject(opts.Parents[0])
		if err != nil {
			return plumbing.ZeroHash, err
		}
		previousTree = parentCommit.TreeHash
	}

	if treeHash == previousTree && !opts.AllowEmptyCommits {
		return plumbing.ZeroHash, ErrEmptyCommit