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// Copyright 2015 The Gogs Authors. All rights reserved.
// Copyright 2018 The Gitea Authors. All rights reserved.
// SPDX-License-Identifier: MIT
//go:build gogit
package git
import (
"context"
"sort"
"strings"
"github.com/go-git/go-git/v5/plumbing"
"github.com/go-git/go-git/v5/plumbing/storer"
)
// IsObjectExist returns true if given reference exists in the repository.
func (repo *Repository) IsObjectExist(name string) bool {
if name == "" {
return false
}
_, err := repo.gogitRepo.ResolveRevision(plumbing.Revision(name))
return err == nil
}
// IsReferenceExist returns true if given reference exists in the repository.
func (repo *Repository) IsReferenceExist(name string) bool {
if name == "" {
return false
}
reference, err := repo.gogitRepo.Reference(plumbing.ReferenceName(name), true)
if err != nil {
return false
}
return reference.Type() != plumbing.InvalidReference
}
// IsBranchExist returns true if given branch exists in current repository.
func (repo *Repository) IsBranchExist(name string) bool {
if name == "" {
return false
}
reference, err := repo.gogitRepo.Reference(plumbing.ReferenceName(BranchPrefix+name), true)
if err != nil {
return false
}
return reference.Type() != plumbing.InvalidReference
}
// GetBranches returns branches from the repository, skipping "skip" initial branches and
// returning at most "limit" branches, or all branches if "limit" is 0.
// Branches are returned with sort of `-commiterdate` as the nogogit
// implementation. This requires full fetch, sort and then the
// skip/limit applies later as gogit returns in undefined order.
func (repo *Repository) GetBranchNames(skip, limit int) ([]string, int, error) {
type BranchData struct {
name string
committerDate int64
}
var branchData []BranchData
branchIter, err := repo.gogitRepo.Branches()
if err != nil {
return nil, 0, err
}
_ = branchIter.ForEach(func(branch *plumbing.Reference) error {
obj, err := repo.gogitRepo.CommitObject(branch.Hash())
if err != nil {
// skip branch if can't find commit
return nil
}
branchData = append(branchData, BranchData{strings.TrimPrefix(branch.Name().String(), BranchPrefix), obj.Committer.When.Unix()})
return nil
})
sort.Slice(branchData, func(i, j int) bool {
return !(branchData[i].committerDate < branchData[j].committerDate)
})
var branchNames []string
maxPos := len(branchData)
if limit > 0 {
maxPos = min(skip+limit, maxPos)
}
for i := skip; i < maxPos; i++ {
branchNames = append(branchNames, branchData[i].name)
}
return branchNames, len(branchData), nil
}
// WalkReferences walks all the references from the repository
// refType should be empty, ObjectTag or ObjectBranch. All other values are equivalent to empty.
func WalkReferences(ctx context.Context, repoPath string, walkfn func(sha1, refname string) error) (int, error) {
repo := RepositoryFromContext(ctx, repoPath)
if repo == nil {
var err error
repo, err = OpenRepository(ctx, repoPath)
if err != nil {
return 0, err
}
defer repo.Close()
}
i := 0
iter, err := repo.gogitRepo.References()
if err != nil {
return i, err
}
defer iter.Close()
err = iter.ForEach(func(ref *plumbing.Reference) error {
err := walkfn(ref.Hash().String(), string(ref.Name()))
i++
return err
})
return i, err
}
// WalkReferences walks all the references from the repository
func (repo *Repository) WalkReferences(arg ObjectType, skip, limit int, walkfn func(sha1, refname string) error) (int, error) {
i := 0
var iter storer.ReferenceIter
var err error
switch arg {
case ObjectTag:
iter, err = repo.gogitRepo.Tags()
case ObjectBranch:
iter, err = repo.gogitRepo.Branches()
default:
iter, err = repo.gogitRepo.References()
}
if err != nil {
return i, err
}
defer iter.Close()
err = iter.ForEach(func(ref *plumbing.Reference) error {
if i < skip {
i++
return nil
}
err := walkfn(ref.Hash().String(), string(ref.Name()))
i++
if err != nil {
return err
}
if limit != 0 && i >= skip+limit {
return storer.ErrStop
}
return nil
})
return i, err
}
// GetRefsBySha returns all references filtered with prefix that belong to a sha commit hash
func (repo *Repository) GetRefsBySha(sha, prefix string) ([]string, error) {
var revList []string
iter, err := repo.gogitRepo.References()
if err != nil {
return nil, err
}
err = iter.ForEach(func(ref *plumbing.Reference) error {
if ref.Hash().String() == sha && strings.HasPrefix(string(ref.Name()), prefix) {
revList = append(revList, string(ref.Name()))
}
return nil
})
return revList, err
}
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