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git.go
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git.go
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package gits
import (
"bytes"
"fmt"
"io"
"io/ioutil"
"net/url"
"os"
"os/exec"
"path/filepath"
"strings"
"time"
"github.com/jenkins-x/jx/pkg/auth"
"github.com/jenkins-x/jx/pkg/util"
gitcfg "gopkg.in/src-d/go-git.v4/config"
)
const (
replaceInvalidBranchChars = '_'
)
// FindGitConfigDir tries to find the `.git` directory either in the current directory or in parent directories
func FindGitConfigDir(dir string) (string, string, error) {
d := dir
var err error
if d == "" {
d, err = os.Getwd()
if err != nil {
return "", "", err
}
}
for {
gitDir := filepath.Join(d, ".git/config")
f, err := util.FileExists(gitDir)
if err != nil {
return "", "", err
}
if f {
return d, gitDir, nil
}
dirPath := strings.TrimSuffix(d, "/")
if dirPath == "" {
return "", "", nil
}
p, _ := filepath.Split(dirPath)
if d == "/" || p == d {
return "", "", nil
}
d = p
}
}
// GitClone clones the given git URL into the given directory
func GitClone(url string, directory string) error {
/*
return git.PlainClone(directory, false, &git.CloneOptions{
URL: url,
RecurseSubmodules: git.DefaultSubmoduleRecursionDepth,
})
*/
e := exec.Command("git", "clone", url, directory)
e.Stdout = os.Stdout
e.Stderr = os.Stderr
err := e.Run()
if err != nil {
return fmt.Errorf("failed to invoke git clone to %s due to %s", directory, err)
}
return nil
}
// GitCloneOrPull will clone the given git URL or pull if it alreasy exists
func GitCloneOrPull(url string, directory string) error {
empty, err := util.IsEmpty(directory)
if err != nil {
return err
}
if !empty {
e := exec.Command("git", "pull")
e.Dir = directory
e.Stdout = os.Stdout
e.Stderr = os.Stderr
err = e.Run()
if err != nil {
return fmt.Errorf("failed to git pull in %s due to %s", directory, err)
}
return nil
}
e := exec.Command("git", "clone", url, directory)
e.Stdout = os.Stdout
e.Stderr = os.Stderr
err = e.Run()
if err != nil {
return fmt.Errorf("failed to git clone to %s due to %s", directory, err)
}
return nil
}
func GitInit(dir string) error {
e := exec.Command("git", "init")
e.Dir = dir
e.Stdout = os.Stdout
e.Stderr = os.Stderr
err := e.Run()
if err != nil {
return fmt.Errorf("failed to invoke git init in %s due to %s", dir, err)
}
return nil
}
func GitRemove(dir, fileName string) error {
e := exec.Command("git", "rm", "-r", fileName)
e.Dir = dir
e.Stdout = os.Stdout
e.Stderr = os.Stderr
err := e.Run()
if err != nil {
return fmt.Errorf("failed to invoke git rm in %s due to %s", dir, err)
}
return nil
}
func GitStatus(dir string) error {
e := exec.Command("git", "status")
e.Dir = dir
e.Stdout = os.Stdout
e.Stderr = os.Stderr
err := e.Run()
if err != nil {
return fmt.Errorf("failed to invoke git status in %s due to %s", dir, err)
}
return nil
}
func GitGetBranch(dir string) (string, error) {
return util.GetCommandOutput(dir, "git", "rev-parse", "--abbrev-ref", "HEAD")
}
func GitPush(dir string) error {
e := exec.Command("git", "push", "origin", "HEAD")
e.Dir = dir
e.Stdout = os.Stdout
e.Stderr = os.Stderr
err := e.Run()
if err != nil {
return fmt.Errorf("failed to invoke git push in %s due to %s", dir, err)
}
return nil
}
func GitAdd(dir string, args ...string) error {
a := append([]string{"add"}, args...)
e := exec.Command("git", a...)
e.Dir = dir
e.Stdout = os.Stdout
e.Stderr = os.Stderr
err := e.Run()
if err != nil {
return fmt.Errorf("failed to run git add in %s due to %s", dir, err)
}
return nil
}
func HasChanges(dir string) (bool, error) {
e := exec.Command("git", "status", "-s")
e.Dir = dir
data, err := e.Output()
if err != nil {
return false, err
}
text := string(data)
text = strings.TrimSpace(text)
return len(text) > 0, nil
}
func GitCommitIfChanges(dir string, message string) error {
changed, err := HasChanges(dir)
if err != nil {
return err
}
if !changed {
return nil
}
return GitCommitDir(dir, message)
}
func GitCommitDir(dir string, message string) error {
e := exec.Command("git", "commit", "-m", message)
e.Dir = dir
e.Stdout = os.Stdout
e.Stderr = os.Stderr
err := e.Run()
if err != nil {
return fmt.Errorf("failed to run git commit in %s due to %s", dir, err)
}
return nil
}
func GitCmd(dir string, args ...string) error {
e := exec.Command("git", args...)
e.Dir = dir
e.Stdout = os.Stdout
e.Stderr = os.Stderr
err := e.Run()
if err != nil {
return fmt.Errorf("failed to invoke git %s in %s due to %s", strings.Join(args, " "), dir, err)
}
return nil
}
// GitCreatePushURL creates the git repository URL with the username and password encoded for HTTPS based URLs
func GitCreatePushURL(cloneURL string, userAuth *auth.UserAuth) (string, error) {
u, err := url.Parse(cloneURL)
if err != nil {
// already a git/ssh url?
return cloneURL, nil
}
if userAuth.Username != "" || userAuth.ApiToken != "" {
u.User = url.UserPassword(userAuth.Username, userAuth.ApiToken)
return u.String(), nil
}
return cloneURL, nil
}
func GitRepoName(org, repoName string) string {
if org != "" {
return org + "/" + repoName
}
return repoName
}
func GetGitServer(dir string) (string, error) {
repo, err := GetGitInfo(dir)
if err != nil {
return "", err
}
return repo.HostURL(), err
}
func GetGitInfo(dir string) (*GitRepositoryInfo, error) {
e := exec.Command("git", "status")
if dir != "" {
e.Dir = dir
}
data, err := e.CombinedOutput()
if err != nil && strings.Contains(string(data), "Not a git repository") {
return nil, fmt.Errorf("you are not in a Git repository - promotion command should be executed from an application directory")
}
e = exec.Command("git", "config", "--get", "remote.origin.url")
if dir != "" {
e.Dir = dir
}
data, err = e.CombinedOutput()
if err != nil {
return nil, fmt.Errorf("failed to run git commit in %s due to %s", dir, err)
}
rUrl := string(data)
rUrl = strings.TrimSpace(rUrl)
repo, err := ParseGitURL(rUrl)
if err != nil {
return nil, fmt.Errorf("failed to parse git URL %s due to %s", rUrl, err)
}
return repo, err
}
// ConvertToValidBranchName converts the given branch name into a valid git branch string
// replacing any dodgy characters
func ConvertToValidBranchName(name string) string {
name = strings.TrimSuffix(name, "/")
name = strings.TrimSuffix(name, ".lock")
var buffer bytes.Buffer
last := ' '
for _, ch := range name {
if ch <= 32 {
ch = replaceInvalidBranchChars
}
switch ch {
case '~':
ch = replaceInvalidBranchChars
case '^':
ch = replaceInvalidBranchChars
case ':':
ch = replaceInvalidBranchChars
case ' ':
ch = replaceInvalidBranchChars
case '\n':
ch = replaceInvalidBranchChars
case '\r':
ch = replaceInvalidBranchChars
case '\t':
ch = replaceInvalidBranchChars
}
if ch != replaceInvalidBranchChars || last != replaceInvalidBranchChars {
buffer.WriteString(string(ch))
}
last = ch
}
return buffer.String()
}
func GetAuthorEmailForCommit(dir string, sha string) (string, error) {
e := exec.Command("git", "show", "-s", "--format=%aE", sha)
e.Dir = dir
out, err := e.Output()
if err != nil {
return "", fmt.Errorf("failed to invoke git %s in %s due to %s", "show "+sha, dir, err)
}
return strings.TrimSpace(string(out)), nil
}
func SetRemoteURL(dir string, name string, gitURL string) error {
err := GitCmd(dir, "remote", "add", name, gitURL)
if err != nil {
err = GitCmd(dir, "remote", "set-url", name, gitURL)
if err != nil {
return err
}
}
return nil
}
func parseGitConfig(gitConf string) (*gitcfg.Config, error) {
if gitConf == "" {
return nil, fmt.Errorf("no GitConfDir defined")
}
cfg := gitcfg.NewConfig()
data, err := ioutil.ReadFile(gitConf)
if err != nil {
return nil, fmt.Errorf("failed to load %s due to %s", gitConf, err)
}
err = cfg.Unmarshal(data)
if err != nil {
return nil, fmt.Errorf("failed to unmarshal %s due to %s", gitConf, err)
}
return cfg, nil
}
func DiscoverRemoteGitURL(gitConf string) (string, error) {
cfg, err := parseGitConfig(gitConf)
if err != nil {
return "", fmt.Errorf("failed to unmarshal %s due to %s", gitConf, err)
}
remotes := cfg.Remotes
if len(remotes) == 0 {
return "", nil
}
rUrl := GetRemoteUrl(cfg, "origin")
if rUrl == "" {
rUrl = GetRemoteUrl(cfg, "upstream")
}
return rUrl, nil
}
func DiscoverUpstreamGitURL(gitConf string) (string, error) {
cfg, err := parseGitConfig(gitConf)
if err != nil {
return "", fmt.Errorf("failed to unmarshal %s due to %s", gitConf, err)
}
remotes := cfg.Remotes
if len(remotes) == 0 {
return "", nil
}
rUrl := GetRemoteUrl(cfg, "upstream")
if rUrl == "" {
rUrl = GetRemoteUrl(cfg, "origin")
}
return rUrl, nil
}
func firstRemoteUrl(remote *gitcfg.RemoteConfig) string {
if remote != nil {
urls := remote.URLs
if urls != nil && len(urls) > 0 {
return urls[0]
}
}
return ""
}
func GetRemoteUrl(config *gitcfg.Config, name string) string {
if config.Remotes != nil {
return firstRemoteUrl(config.Remotes[name])
}
return ""
}
func GitGetRemoteBranchNames(dir string, prefix string) ([]string, error) {
answer := []string{}
text, err := util.GetCommandOutput(dir, "git", "branch", "-a")
if err != nil {
return answer, err
}
lines := strings.Split(text, "\n")
for _, line := range lines {
line = strings.TrimSpace(strings.TrimPrefix(line, "* "))
if prefix != "" {
line = strings.TrimPrefix(line, prefix)
}
answer = append(answer, line)
}
return answer, nil
}
func GetPreviousGitTagSHA(dir string) (string, error) {
// when in a release branch we need to skip 2 rather that 1 to find the revision of the previous tag
// no idea why! :)
return util.GetCommandOutput(dir, "git", "rev-list", "--tags", "--skip=2", "--max-count=1")
}
// GetRevisionBeforeDate returns the revision before the given date
func GetRevisionBeforeDate(dir string, t time.Time) (string, error) {
dateText := FormatDate(t)
return GetRevisionBeforeDateText(dir, dateText)
}
// GetRevisionBeforeDateText returns the revision before the given date in format "MonthName dayNumber year"
func GetRevisionBeforeDateText(dir string, dateText string) (string, error) {
branch, err := GitGetBranch(dir)
if err != nil {
return "", err
}
return util.GetCommandOutput(dir, "git", "rev-list", "-1", "--before=\""+dateText+"\"", "--max-count=1", branch)
}
func FormatDate(t time.Time) string {
return fmt.Sprintf("%s %d %d", t.Month().String(), t.Day(), t.Year())
}
func ParseDate(dateText string) (time.Time, error) {
return time.Parse(DateFormat, dateText)
}
func GetCurrentGitTagSHA(dir string) (string, error) {
return util.GetCommandOutput(dir, "git", "rev-list", "--tags", "--max-count=1")
}
func PrintCreateRepositoryGenerateAccessToken(server *auth.AuthServer, username string, o io.Writer) {
tokenUrl := ProviderAccessTokenURL(server.Kind, server.URL, username)
fmt.Fprintf(o, "To be able to create a repository on %s we need an API Token\n", server.Label())
fmt.Fprintf(o, "Please click this URL %s\n\n", util.ColorInfo(tokenUrl))
fmt.Fprint(o, "Then COPY the token and enter in into the form below:\n\n")
}
func GitIsFork(gitProvider GitProvider, gitInfo *GitRepositoryInfo, dir string) (bool, error) {
// lets ignore errors as that just means there's no config
originUrl, _ := util.GetCommandOutput(dir, "git", "config", "--get", "remote.origin.url")
upstreamUrl, _ := util.GetCommandOutput(dir, "git", "config", "--get", "remote.upstream.url")
if originUrl != upstreamUrl && originUrl != "" && upstreamUrl != "" {
return true, nil
}
repo, err := gitProvider.GetRepository(gitInfo.Organisation, gitInfo.Name)
if err != nil {
return false, err
}
return repo.Fork, nil
}
// ToGitLabels converts the list of label names into an array of GitLabels
func ToGitLabels(names []string) []GitLabel {
answer := []GitLabel{}
for _, n := range names {
answer = append(answer, GitLabel{Name: n})
}
return answer
}
// GetHost returns the Git Provider hostname, e.g github.com
func GetHost(gitProvider GitProvider) (string, error) {
if gitProvider == nil {
return "", fmt.Errorf("no git provider")
}
if gitProvider.ServerURL() == "" {
return "", fmt.Errorf("no git provider server URL found")
}
url, err := url.Parse(gitProvider.ServerURL())
if err != nil {
return "", fmt.Errorf("error parsing ")
}
return url.Host, nil
}