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// Copyright 2015 The Gogs Authors. All rights reserved.
// Copyright 2018 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 git
import (
"fmt"
"strings"
"gopkg.in/src-d/go-git.v4/plumbing"
)
// BranchPrefix base dir of the branch information file store on git
const BranchPrefix = "refs/heads/"
// IsReferenceExist returns true if given reference exists in the repository.
func IsReferenceExist(repoPath, name string) bool {
_, err := NewCommand("show-ref", "--verify", "--", name).RunInDir(repoPath)
return err == nil
}
// IsBranchExist returns true if given branch exists in the repository.
func IsBranchExist(repoPath, name string) bool {
return IsReferenceExist(repoPath, BranchPrefix+name)
}
// IsBranchExist returns true if given branch exists in current repository.
func (repo *Repository) IsBranchExist(name string) bool {
_, err := repo.gogitRepo.Reference(plumbing.ReferenceName(BranchPrefix+name), true)
return err == nil
}
// Branch represents a Git branch.
type Branch struct {
Name string
Path string
gitRepo *Repository
}
// GetHEADBranch returns corresponding branch of HEAD.
func (repo *Repository) GetHEADBranch() (*Branch, error) {
stdout, err := NewCommand("symbolic-ref", "HEAD").RunInDir(repo.Path)
if err != nil {
return nil, err
}
stdout = strings.TrimSpace(stdout)
if !strings.HasPrefix(stdout, BranchPrefix) {
return nil, fmt.Errorf("invalid HEAD branch: %v", stdout)
}
return &Branch{
Name: stdout[len(BranchPrefix):],
Path: stdout,
gitRepo: repo,
}, nil
}
// SetDefaultBranch sets default branch of repository.
func (repo *Repository) SetDefaultBranch(name string) error {
_, err := NewCommand("symbolic-ref", "HEAD", BranchPrefix+name).RunInDir(repo.Path)
return err
}
// GetBranches returns all branches of the repository.
func (repo *Repository) GetBranches() ([]string, error) {
var branchNames []string
branches, err := repo.gogitRepo.Branches()
if err != nil {
return nil, err
}
_ = branches.ForEach(func(branch *plumbing.Reference) error {
branchNames = append(branchNames, strings.TrimPrefix(branch.Name().String(), BranchPrefix))
return nil
})
// TODO: Sort?
return branchNames, nil
}
// GetBranch returns a branch by it's name
func (repo *Repository) GetBranch(branch string) (*Branch, error) {
if !repo.IsBranchExist(branch) {
return nil, ErrBranchNotExist{branch}
}
return &Branch{
Path: repo.Path,
Name: branch,
gitRepo: repo,
}, nil
}
// GetBranchesByPath returns a branch by it's path
func GetBranchesByPath(path string) ([]*Branch, error) {
gitRepo, err := OpenRepository(path)
if err != nil {
return nil, err
}
brs, err := gitRepo.GetBranches()
if err != nil {
return nil, err
}
branches := make([]*Branch, len(brs))
for i := range brs {
branches[i] = &Branch{
Path: path,
Name: brs[i],
gitRepo: gitRepo,
}
}
return branches, nil
}
// DeleteBranchOptions Option(s) for delete branch
type DeleteBranchOptions struct {
Force bool
}
// DeleteBranch delete a branch by name on repository.
func (repo *Repository) DeleteBranch(name string, opts DeleteBranchOptions) error {
cmd := NewCommand("branch")
if opts.Force {
cmd.AddArguments("-D")
} else {
cmd.AddArguments("-d")
}
cmd.AddArguments("--", name)
_, err := cmd.RunInDir(repo.Path)
return err
}
// CreateBranch create a new branch
func (repo *Repository) CreateBranch(branch, oldbranchOrCommit string) error {
cmd := NewCommand("branch")
cmd.AddArguments("--", branch, oldbranchOrCommit)
_, err := cmd.RunInDir(repo.Path)
return err
}
// AddRemote adds a new remote to repository.
func (repo *Repository) AddRemote(name, url string, fetch bool) error {
cmd := NewCommand("remote", "add")
if fetch {
cmd.AddArguments("-f")
}
cmd.AddArguments(name, url)
_, err := cmd.RunInDir(repo.Path)
return err
}
// RemoveRemote removes a remote from repository.
func (repo *Repository) RemoveRemote(name string) error {
_, err := NewCommand("remote", "remove", name).RunInDir(repo.Path)
return err
}
// GetCommit returns the head commit of a branch
func (branch *Branch) GetCommit() (*Commit, error) {
return branch.gitRepo.GetBranchCommit(branch.Name)
}
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