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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"
)
// GetBranch returns a branch by its name
func GetBranch(repo *models.Repository, branch string) (*git.Branch, error) {
if len(branch) == 0 {
return nil, fmt.Errorf("GetBranch: empty string for branch")
}
gitRepo, err := git.OpenRepository(repo.RepoPath())
if err != nil {
return nil, err
}
defer gitRepo.Close()
return gitRepo.GetBranch(branch)
}
// GetBranches returns branches from the repository, skipping skip initial branches and
// returning at most limit branches, or all branches if limit is 0.
func GetBranches(repo *models.Repository, skip, limit int) ([]*git.Branch, int, error) {
return git.GetBranchesByPath(repo.RepoPath(), skip, limit)
}
// 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, 0, 0)
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 models.ErrBranchDoesNotExist{
BranchName: oldBranchName,
}
}
if err := git.Push(repo.RepoPath(), git.PushOptions{
Remote: repo.RepoPath(),
Branch: fmt.Sprintf("%s:%s%s", oldBranchName, git.BranchPrefix, 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
}
if err := git.Push(repo.RepoPath(), git.PushOptions{
Remote: repo.RepoPath(),
Branch: fmt.Sprintf("%s:%s%s", commit, git.BranchPrefix, 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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