初始提交: Gitea 项目代码

2026-05-30 22:47:36 +08:00
commit f288f76350
6116 changed files with 776822 additions and 0 deletions
@@ -0,0 +1,139 @@
+// Copyright 2020 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+//go:build !gogit
+
+package git
+
+import (
+	"errors"
+	"io"
+	"strings"
+
+	"gitea.dev/modules/git/gitcmd"
+	"gitea.dev/modules/log"
+)
+
+// ResolveReference resolves a name to a reference
+func (repo *Repository) ResolveReference(name string) (string, error) {
+	stdout, _, err := gitcmd.NewCommand("show-ref", "--hash").
+		AddDynamicArguments(name).
+		WithDir(repo.Path).
+		RunStdString(repo.Ctx)
+	if err != nil {
+		if strings.Contains(err.Error(), "not a valid ref") {
+			return "", ErrNotExist{name, ""}
+		}
+		return "", err
+	}
+	stdout = strings.TrimSpace(stdout)
+	if stdout == "" {
+		return "", ErrNotExist{name, ""}
+	}
+
+	return stdout, nil
+}
+
+// GetRefCommitID returns the last commit ID string of given reference (branch or tag).
+func (repo *Repository) GetRefCommitID(name string) (string, error) {
+	batch, cancel, err := repo.CatFileBatch(repo.Ctx)
+	if err != nil {
+		return "", err
+	}
+	defer cancel()
+	info, err := batch.QueryInfo(name)
+	if IsErrNotExist(err) {
+		return "", ErrNotExist{name, ""}
+	} else if err != nil {
+		return "", err
+	}
+	return info.ID, nil
+}
+
+func (repo *Repository) getCommit(id ObjectID) (*Commit, error) {
+	batch, cancel, err := repo.CatFileBatch(repo.Ctx)
+	if err != nil {
+		return nil, err
+	}
+	defer cancel()
+	return repo.getCommitWithBatch(batch, id)
+}
+
+func (repo *Repository) getCommitWithBatch(batch CatFileBatch, id ObjectID) (*Commit, error) {
+	info, rd, err := batch.QueryContent(id.String())
+	if err != nil {
+		if errors.Is(err, io.EOF) || IsErrNotExist(err) {
+			return nil, ErrNotExist{ID: id.String()}
+		}
+		return nil, err
+	}
+
+	switch info.Type {
+	case "missing":
+		return nil, ErrNotExist{ID: id.String()}
+	case "tag":
+		// then we need to parse the tag
+		// and load the commit
+		data, err := io.ReadAll(io.LimitReader(rd, info.Size))
+		if err != nil {
+			return nil, err
+		}
+		_, err = rd.Discard(1)
+		if err != nil {
+			return nil, err
+		}
+		tag, err := parseTagData(id.Type(), data)
+		if err != nil {
+			return nil, err
+		}
+		return repo.getCommitWithBatch(batch, tag.Object)
+	case "commit":
+		commit, err := CommitFromReader(repo, id, io.LimitReader(rd, info.Size))
+		if err != nil {
+			return nil, err
+		}
+		_, err = rd.Discard(1)
+		if err != nil {
+			return nil, err
+		}
+
+		return commit, nil
+	default:
+		log.Debug("Unknown cat-file object type: %s", info.Type)
+		if err := DiscardFull(rd, info.Size+1); err != nil {
+			return nil, err
+		}
+		return nil, ErrNotExist{
+			ID: id.String(),
+		}
+	}
+}
+
+// ConvertToGitID returns a GitHash object from a potential ID string
+func (repo *Repository) ConvertToGitID(commitID string) (ObjectID, error) {
+	objectFormat, err := repo.GetObjectFormat()
+	if err != nil {
+		return nil, err
+	}
+	if len(commitID) == objectFormat.FullLength() && objectFormat.IsValid(commitID) {
+		ID, err := NewIDFromString(commitID)
+		if err == nil {
+			return ID, nil
+		}
+	}
+
+	batch, cancel, err := repo.CatFileBatch(repo.Ctx)
+	if err != nil {
+		return nil, err
+	}
+	defer cancel()
+	info, err := batch.QueryInfo(commitID)
+	if err != nil {
+		if IsErrNotExist(err) {
+			return nil, ErrNotExist{commitID, ""}
+		}
+		return nil, err
+	}
+
+	return MustIDFromString(info.ID), nil
+}