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https://github.com/go-gitea/gitea
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The current implementation of checkBranchName is highly inefficient involving opening the repository, the listing all of the branch names checking them individually before then using using opened repo to get the tags. This PR avoids this by simply walking the references from show-ref instead of opening the repository (in the nogogit case). Signed-off-by: Andrew Thornton <art27@cantab.net>
179 lines
4.6 KiB
Go
179 lines
4.6 KiB
Go
// Copyright 2015 The Gogs Authors. All rights reserved.
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// Copyright 2018 The Gitea Authors. All rights reserved.
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// Use of this source code is governed by a MIT-style
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// license that can be found in the LICENSE file.
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package git
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import (
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"context"
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"fmt"
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"strings"
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)
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// BranchPrefix base dir of the branch information file store on git
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const BranchPrefix = "refs/heads/"
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// AGit Flow
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// PullRequestPrefix sepcial ref to create a pull request: refs/for/<targe-branch>/<topic-branch>
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// or refs/for/<targe-branch> -o topic='<topic-branch>'
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const PullRequestPrefix = "refs/for/"
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// TODO: /refs/for-review for suggest change interface
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// IsReferenceExist returns true if given reference exists in the repository.
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func IsReferenceExist(ctx context.Context, repoPath, name string) bool {
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_, err := NewCommandContext(ctx, "show-ref", "--verify", "--", name).RunInDir(repoPath)
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return err == nil
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}
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// IsBranchExist returns true if given branch exists in the repository.
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func IsBranchExist(ctx context.Context, repoPath, name string) bool {
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return IsReferenceExist(ctx, repoPath, BranchPrefix+name)
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}
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// Branch represents a Git branch.
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type Branch struct {
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Name string
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Path string
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gitRepo *Repository
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}
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// GetHEADBranch returns corresponding branch of HEAD.
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func (repo *Repository) GetHEADBranch() (*Branch, error) {
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if repo == nil {
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return nil, fmt.Errorf("nil repo")
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}
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stdout, err := NewCommandContext(repo.Ctx, "symbolic-ref", "HEAD").RunInDir(repo.Path)
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if err != nil {
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return nil, err
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}
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stdout = strings.TrimSpace(stdout)
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if !strings.HasPrefix(stdout, BranchPrefix) {
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return nil, fmt.Errorf("invalid HEAD branch: %v", stdout)
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}
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return &Branch{
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Name: stdout[len(BranchPrefix):],
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Path: stdout,
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gitRepo: repo,
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}, nil
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}
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// SetDefaultBranch sets default branch of repository.
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func (repo *Repository) SetDefaultBranch(name string) error {
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_, err := NewCommandContext(repo.Ctx, "symbolic-ref", "HEAD", BranchPrefix+name).RunInDir(repo.Path)
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return err
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}
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// GetDefaultBranch gets default branch of repository.
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func (repo *Repository) GetDefaultBranch() (string, error) {
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return NewCommandContext(repo.Ctx, "symbolic-ref", "HEAD").RunInDir(repo.Path)
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}
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// GetBranch returns a branch by it's name
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func (repo *Repository) GetBranch(branch string) (*Branch, error) {
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if !repo.IsBranchExist(branch) {
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return nil, ErrBranchNotExist{branch}
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}
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return &Branch{
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Path: repo.Path,
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Name: branch,
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gitRepo: repo,
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}, nil
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}
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// GetBranchesByPath returns a branch by it's path
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// if limit = 0 it will not limit
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func GetBranchesByPath(path string, skip, limit int) ([]*Branch, int, error) {
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gitRepo, err := OpenRepository(path)
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if err != nil {
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return nil, 0, err
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}
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defer gitRepo.Close()
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return gitRepo.GetBranches(skip, limit)
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}
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// GetBranches returns a slice of *git.Branch
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func (repo *Repository) GetBranches(skip, limit int) ([]*Branch, int, error) {
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brs, countAll, err := repo.GetBranchNames(skip, limit)
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if err != nil {
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return nil, 0, err
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}
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branches := make([]*Branch, len(brs))
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for i := range brs {
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branches[i] = &Branch{
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Path: repo.Path,
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Name: brs[i],
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gitRepo: repo,
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}
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}
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return branches, countAll, nil
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}
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// DeleteBranchOptions Option(s) for delete branch
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type DeleteBranchOptions struct {
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Force bool
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}
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// DeleteBranch delete a branch by name on repository.
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func (repo *Repository) DeleteBranch(name string, opts DeleteBranchOptions) error {
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cmd := NewCommandContext(repo.Ctx, "branch")
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if opts.Force {
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cmd.AddArguments("-D")
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} else {
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cmd.AddArguments("-d")
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}
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cmd.AddArguments("--", name)
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_, err := cmd.RunInDir(repo.Path)
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return err
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}
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// CreateBranch create a new branch
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func (repo *Repository) CreateBranch(branch, oldbranchOrCommit string) error {
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cmd := NewCommandContext(repo.Ctx, "branch")
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cmd.AddArguments("--", branch, oldbranchOrCommit)
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_, err := cmd.RunInDir(repo.Path)
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return err
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}
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// AddRemote adds a new remote to repository.
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func (repo *Repository) AddRemote(name, url string, fetch bool) error {
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cmd := NewCommandContext(repo.Ctx, "remote", "add")
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if fetch {
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cmd.AddArguments("-f")
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}
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cmd.AddArguments(name, url)
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_, err := cmd.RunInDir(repo.Path)
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return err
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}
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// RemoveRemote removes a remote from repository.
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func (repo *Repository) RemoveRemote(name string) error {
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_, err := NewCommandContext(repo.Ctx, "remote", "rm", name).RunInDir(repo.Path)
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return err
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}
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// GetCommit returns the head commit of a branch
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func (branch *Branch) GetCommit() (*Commit, error) {
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return branch.gitRepo.GetBranchCommit(branch.Name)
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}
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// RenameBranch rename a branch
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func (repo *Repository) RenameBranch(from, to string) error {
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_, err := NewCommandContext(repo.Ctx, "branch", "-m", from, to).RunInDir(repo.Path)
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return err
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}
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