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// Copyright 2020 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package repository
import (
"fmt"
"code.gitea.io/gitea/models"
"code.gitea.io/gitea/modules/git"
"code.gitea.io/gitea/modules/log"
)
// GetBranch returns a branch by its name
func GetBranch(repo *models.Repository, branch string) (*git.Branch, error) {
gitRepo, err := git.OpenRepository(repo.RepoPath())
if err != nil {
return nil, err
}
defer gitRepo.Close()
return gitRepo.GetBranch(branch)
}
// GetBranches returns all the branches of a repository
func GetBranches(repo *models.Repository) ([]*git.Branch, error) {
return git.GetBranchesByPath(repo.RepoPath())
}
// checkBranchName validates branch name with existing repository branches
func checkBranchName(repo *models.Repository, name string) error {
gitRepo, err := git.OpenRepository(repo.RepoPath())
if err != nil {
return err
}
defer gitRepo.Close()
branches, err := GetBranches(repo)
if err != nil {
return err
}
for _, branch := range branches {
if branch.Name == name {
return models.ErrBranchAlreadyExists{
BranchName: branch.Name,
}
} else if (len(branch.Name) < len(name) && branch.Name+"/" == name[0:len(branch.Name)+1]) ||
(len(branch.Name) > len(name) && name+"/" == branch.Name[0:len(name)+1]) {
return models.ErrBranchNameConflict{
BranchName: branch.Name,
}
}
}
if _, err := gitRepo.GetTag(name); err == nil {
return models.ErrTagAlreadyExists{
TagName: name,
}
}
return nil
}
// CreateNewBranch creates a new repository branch
func CreateNewBranch(doer *models.User, repo *models.Repository, oldBranchName, branchName string) (err error) {
// Check if branch name can be used
if err := checkBranchName(repo, branchName); err != nil {
return err
}
if !git.IsBranchExist(repo.RepoPath(), oldBranchName) {
return fmt.Errorf("OldBranch: %s does not exist. Cannot create new branch from this", oldBranchName)
}
basePath, err := models.CreateTemporaryPath("branch-maker")
if err != nil {
return err
}
defer func() {
if err := models.RemoveTemporaryPath(basePath); err != nil {
log.Error("CreateNewBranch: RemoveTemporaryPath: %s", err)
}
}()
if err := git.Clone(repo.RepoPath(), basePath, git.CloneRepoOptions{
Bare: true,
Shared: true,
}); err != nil {
log.Error("Failed to clone repository: %s (%v)", repo.FullName(), err)
return fmt.Errorf("Failed to clone repository: %s (%v)", repo.FullName(), err)
}
gitRepo, err := git.OpenRepository(basePath)
if err != nil {
log.Error("Unable to open temporary repository: %s (%v)", basePath, err)
return fmt.Errorf("Failed to open new temporary repository in: %s %v", basePath, err)
}
defer gitRepo.Close()
if err = gitRepo.CreateBranch(branchName, oldBranchName); err != nil {
log.Error("Unable to create branch: %s from %s. (%v)", branchName, oldBranchName, err)
return fmt.Errorf("Unable to create branch: %s from %s. (%v)", branchName, oldBranchName, err)
}
if err = git.Push(basePath, git.PushOptions{
Remote: "origin",
Branch: branchName,
Env: models.PushingEnvironment(doer, repo),
}); err != nil {
if git.IsErrPushOutOfDate(err) || git.IsErrPushRejected(err) {
return err
}
return fmt.Errorf("Push: %v", err)
}
return nil
}
// CreateNewBranchFromCommit creates a new repository branch
func CreateNewBranchFromCommit(doer *models.User, repo *models.Repository, commit, branchName string) (err error) {
// Check if branch name can be used
if err := checkBranchName(repo, branchName); err != nil {
return err
}
basePath, err := models.CreateTemporaryPath("branch-maker")
if err != nil {
return err
}
defer func() {
if err := models.RemoveTemporaryPath(basePath); err != nil {
log.Error("CreateNewBranchFromCommit: RemoveTemporaryPath: %s", err)
}
}()
if err := git.Clone(repo.RepoPath(), basePath, git.CloneRepoOptions{
Bare: true,
Shared: true,
}); err != nil {
log.Error("Failed to clone repository: %s (%v)", repo.FullName(), err)
return fmt.Errorf("Failed to clone repository: %s (%v)", repo.FullName(), err)
}
gitRepo, err := git.OpenRepository(basePath)
if err != nil {
log.Error("Unable to open temporary repository: %s (%v)", basePath, err)
return fmt.Errorf("Failed to open new temporary repository in: %s %v", basePath, err)
}
defer gitRepo.Close()
if err = gitRepo.CreateBranch(branchName, commit); err != nil {
log.Error("Unable to create branch: %s from %s. (%v)", branchName, commit, err)
return fmt.Errorf("Unable to create branch: %s from %s. (%v)", branchName, commit, err)
}
if err = git.Push(basePath, git.PushOptions{
Remote: "origin",
Branch: branchName,
Env: models.PushingEnvironment(doer, repo),
}); err != nil {
if git.IsErrPushOutOfDate(err) || git.IsErrPushRejected(err) {
return err
}
return fmt.Errorf("Push: %v", err)
}
return nil
}
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