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// Copyright 2015 The Gogs 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"
"github.com/mcuadros/go-version"
)
// 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 {
return IsBranchExist(repo.Path, name)
}
// Branch represents a Git branch.
type Branch struct {
Name string
Path string
}
// 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,
}, nil
}
// SetDefaultBranch sets default branch of repository.
func (repo *Repository) SetDefaultBranch(name string) error {
if version.Compare(gitVersion, "1.7.10", "<") {
return ErrUnsupportedVersion{"1.7.10"}
}
_, 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) {
stdout, err := NewCommand("show-ref", "--heads").RunInDir(repo.Path)
if err != nil {
return nil, err
}
infos := strings.Split(stdout, "\n")
branches := make([]string, len(infos)-1)
for i, info := range infos[:len(infos)-1] {
fields := strings.Fields(info)
if len(fields) != 2 {
continue // NOTE: I should believe git will not give me wrong string.
}
branches[i] = strings.TrimPrefix(fields[1], BranchPrefix)
}
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", "-d")
if opts.Force {
cmd.AddArguments("-f")
}
cmd.AddArguments(name)
_, 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
}
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