first-commit

modules/git/repo_commit_gogit.go

@@ -0,0 +1,118 @@
+// Copyright 2015 The Gogs Authors. All rights reserved.
+// Copyright 2019 The Gitea Authors. All rights reserved.
+// SPDX-License-Identifier: MIT
+
+//go:build gogit
+
+package git
+
+import (
+	"strings"
+
+	"github.com/go-git/go-git/v5/plumbing"
+	"github.com/go-git/go-git/v5/plumbing/hash"
+	"github.com/go-git/go-git/v5/plumbing/object"
+)
+
+// GetRefCommitID returns the last commit ID string of given reference.
+func (repo *Repository) GetRefCommitID(name string) (string, error) {
+	if plumbing.IsHash(name) {
+		return name, nil
+	}
+	refName := plumbing.ReferenceName(name)
+	if err := refName.Validate(); err != nil {
+		return "", err
+	}
+	ref, err := repo.gogitRepo.Reference(refName, true)
+	if err != nil {
+		if err == plumbing.ErrReferenceNotFound {
+			return "", ErrNotExist{
+				ID: name,
+			}
+		}
+		return "", err
+	}
+
+	return ref.Hash().String(), nil
+}
+
+// SetReference sets the commit ID string of given reference (e.g. branch or tag).
+func (repo *Repository) SetReference(name, commitID string) error {
+	return repo.gogitRepo.Storer.SetReference(plumbing.NewReferenceFromStrings(name, commitID))
+}
+
+// RemoveReference removes the given reference (e.g. branch or tag).
+func (repo *Repository) RemoveReference(name string) error {
+	return repo.gogitRepo.Storer.RemoveReference(plumbing.ReferenceName(name))
+}
+
+// ConvertToHash returns a Hash 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) == hash.HexSize && objectFormat.IsValid(commitID) {
+		ID, err := NewIDFromString(commitID)
+		if err == nil {
+			return ID, nil
+		}
+	}
+
+	actualCommitID, _, err := NewCommand("rev-parse", "--verify").AddDynamicArguments(commitID).RunStdString(repo.Ctx, &RunOpts{Dir: repo.Path})
+	actualCommitID = strings.TrimSpace(actualCommitID)
+	if err != nil {
+		if strings.Contains(err.Error(), "unknown revision or path") ||
+			strings.Contains(err.Error(), "fatal: Needed a single revision") {
+			return objectFormat.EmptyObjectID(), ErrNotExist{commitID, ""}
+		}
+		return objectFormat.EmptyObjectID(), err
+	}
+
+	return NewIDFromString(actualCommitID)
+}
+
+// IsCommitExist returns true if given commit exists in current repository.
+func (repo *Repository) IsCommitExist(name string) bool {
+	hash, err := repo.ConvertToGitID(name)
+	if err != nil {
+		return false
+	}
+	_, err = repo.gogitRepo.CommitObject(plumbing.Hash(hash.RawValue()))
+	return err == nil
+}
+
+func (repo *Repository) getCommit(id ObjectID) (*Commit, error) {
+	var tagObject *object.Tag
+
+	commitID := plumbing.Hash(id.RawValue())
+	gogitCommit, err := repo.gogitRepo.CommitObject(commitID)
+	if err == plumbing.ErrObjectNotFound {
+		tagObject, err = repo.gogitRepo.TagObject(commitID)
+		if err == plumbing.ErrObjectNotFound {
+			return nil, ErrNotExist{
+				ID: id.String(),
+			}
+		}
+		if err == nil {
+			gogitCommit, err = repo.gogitRepo.CommitObject(tagObject.Target)
+		}
+		// if we get a plumbing.ErrObjectNotFound here then the repository is broken and it should be 500
+	}
+	if err != nil {
+		return nil, err
+	}
+
+	commit := convertCommit(gogitCommit)
+	commit.repo = repo
+
+	tree, err := gogitCommit.Tree()
+	if err != nil {
+		return nil, err
+	}
+
+	commit.Tree.ID = ParseGogitHash(tree.Hash)
+	commit.Tree.gogitTree = tree
+
+	return commit, nil
+}