// 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 { 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 { return fmt.Errorf("Push: %v", err) } return nil }