2020-12-17 09:00:47 -05:00
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// Copyright 2020 The Gitea Authors. All rights reserved.
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2022-11-27 13:20:29 -05:00
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// SPDX-License-Identifier: MIT
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2020-12-17 09:00:47 -05:00
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2021-08-24 11:47:09 -05:00
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//go:build !gogit
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2020-12-17 09:00:47 -05:00
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package git
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import (
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"bufio"
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"errors"
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"io"
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"strings"
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2021-06-25 11:54:08 -05:00
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"code.gitea.io/gitea/modules/log"
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)
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// ResolveReference resolves a name to a reference
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func (repo *Repository) ResolveReference(name string) (string, error) {
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2022-10-23 09:44:45 -05:00
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stdout, _, err := NewCommand(repo.Ctx, "show-ref", "--hash").AddDynamicArguments(name).RunStdString(&RunOpts{Dir: repo.Path})
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if err != nil {
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if strings.Contains(err.Error(), "not a valid ref") {
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return "", ErrNotExist{name, ""}
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}
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return "", err
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}
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stdout = strings.TrimSpace(stdout)
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if stdout == "" {
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return "", ErrNotExist{name, ""}
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}
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return stdout, nil
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}
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// GetRefCommitID returns the last commit ID string of given reference (branch or tag).
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func (repo *Repository) GetRefCommitID(name string) (string, error) {
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wr, rd, cancel := repo.CatFileBatchCheck(repo.Ctx)
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defer cancel()
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_, err := wr.Write([]byte(name + "\n"))
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if err != nil {
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return "", err
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}
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shaBs, _, _, err := ReadBatchLine(rd)
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if IsErrNotExist(err) {
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return "", ErrNotExist{name, ""}
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}
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return string(shaBs), nil
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}
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// SetReference sets the commit ID string of given reference (e.g. branch or tag).
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func (repo *Repository) SetReference(name, commitID string) error {
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_, _, err := NewCommand(repo.Ctx, "update-ref").AddDynamicArguments(name, commitID).RunStdString(&RunOpts{Dir: repo.Path})
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return err
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}
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// RemoveReference removes the given reference (e.g. branch or tag).
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func (repo *Repository) RemoveReference(name string) error {
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_, _, err := NewCommand(repo.Ctx, "update-ref", "--no-deref", "-d").AddDynamicArguments(name).RunStdString(&RunOpts{Dir: repo.Path})
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return err
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}
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// IsCommitExist returns true if given commit exists in current repository.
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func (repo *Repository) IsCommitExist(name string) bool {
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_, _, err := NewCommand(repo.Ctx, "cat-file", "-e").AddDynamicArguments(name).RunStdString(&RunOpts{Dir: repo.Path})
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return err == nil
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}
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func (repo *Repository) getCommit(id ObjectID) (*Commit, error) {
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wr, rd, cancel := repo.CatFileBatch(repo.Ctx)
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defer cancel()
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_, _ = wr.Write([]byte(id.String() + "\n"))
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return repo.getCommitFromBatchReader(rd, id)
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}
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func (repo *Repository) getCommitFromBatchReader(rd *bufio.Reader, id ObjectID) (*Commit, error) {
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_, typ, size, err := ReadBatchLine(rd)
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if err != nil {
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if errors.Is(err, io.EOF) || IsErrNotExist(err) {
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return nil, ErrNotExist{ID: id.String()}
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}
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return nil, err
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}
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switch typ {
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case "missing":
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return nil, ErrNotExist{ID: id.String()}
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case "tag":
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// then we need to parse the tag
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// and load the commit
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data, err := io.ReadAll(io.LimitReader(rd, size))
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if err != nil {
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return nil, err
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}
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_, err = rd.Discard(1)
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if err != nil {
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return nil, err
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}
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tag, err := parseTagData(id.Type(), data)
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if err != nil {
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return nil, err
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}
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commit, err := tag.Commit(repo)
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if err != nil {
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return nil, err
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}
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return commit, nil
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case "commit":
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commit, err := CommitFromReader(repo, id, io.LimitReader(rd, size))
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if err != nil {
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return nil, err
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}
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_, err = rd.Discard(1)
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if err != nil {
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return nil, err
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}
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return commit, nil
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default:
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log.Debug("Unknown typ: %s", typ)
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if err := DiscardFull(rd, size+1); err != nil {
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return nil, err
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}
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return nil, ErrNotExist{
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ID: id.String(),
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}
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}
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}
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// ConvertToGitID returns a GitHash object from a potential ID string
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func (repo *Repository) ConvertToGitID(commitID string) (ObjectID, error) {
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IDType := repo.objectFormat
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if len(commitID) == IDType.FullLength() && IDType.IsValid(commitID) {
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ID, err := NewIDFromString(commitID)
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if err == nil {
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return ID, nil
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}
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}
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2021-11-30 15:06:32 -05:00
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wr, rd, cancel := repo.CatFileBatchCheck(repo.Ctx)
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defer cancel()
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_, err := wr.Write([]byte(commitID + "\n"))
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if err != nil {
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return nil, err
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}
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sha, _, _, err := ReadBatchLine(rd)
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if err != nil {
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if IsErrNotExist(err) {
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return nil, ErrNotExist{commitID, ""}
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}
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return nil, err
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}
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return MustIDFromString(string(sha)), nil
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}
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