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code-server/lib/vscode/extensions/git/src/git.ts

2063 lines
54 KiB
TypeScript

/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
import { promises as fs, exists, realpath } from 'fs';
import * as path from 'path';
import * as os from 'os';
import * as cp from 'child_process';
import * as which from 'which';
import { EventEmitter } from 'events';
import * as iconv from 'iconv-lite-umd';
import * as filetype from 'file-type';
import { assign, groupBy, IDisposable, toDisposable, dispose, mkdirp, readBytes, detectUnicodeEncoding, Encoding, onceEvent, splitInChunks, Limiter } from './util';
import { CancellationToken, Progress, Uri } from 'vscode';
import { detectEncoding } from './encoding';
import { Ref, RefType, Branch, Remote, GitErrorCodes, LogOptions, Change, Status, CommitOptions, BranchQuery } from './api/git';
import * as byline from 'byline';
import { StringDecoder } from 'string_decoder';
// https://github.com/microsoft/vscode/issues/65693
const MAX_CLI_LENGTH = 30000;
const isWindows = process.platform === 'win32';
export interface IGit {
path: string;
version: string;
}
export interface IFileStatus {
x: string;
y: string;
path: string;
rename?: string;
}
export interface Stash {
index: number;
description: string;
}
interface MutableRemote extends Remote {
fetchUrl?: string;
pushUrl?: string;
isReadOnly: boolean;
}
// TODO@eamodio: Move to git.d.ts once we are good with the api
/**
* Log file options.
*/
export interface LogFileOptions {
/** Optional. The maximum number of log entries to retrieve. */
readonly maxEntries?: number | string;
/** Optional. The Git sha (hash) to start retrieving log entries from. */
readonly hash?: string;
/** Optional. Specifies whether to start retrieving log entries in reverse order. */
readonly reverse?: boolean;
readonly sortByAuthorDate?: boolean;
}
function parseVersion(raw: string): string {
return raw.replace(/^git version /, '');
}
function findSpecificGit(path: string, onLookup: (path: string) => void): Promise<IGit> {
return new Promise<IGit>((c, e) => {
onLookup(path);
const buffers: Buffer[] = [];
const child = cp.spawn(path, ['--version']);
child.stdout.on('data', (b: Buffer) => buffers.push(b));
child.on('error', cpErrorHandler(e));
child.on('exit', code => code ? e(new Error('Not found')) : c({ path, version: parseVersion(Buffer.concat(buffers).toString('utf8').trim()) }));
});
}
function findGitDarwin(onLookup: (path: string) => void): Promise<IGit> {
return new Promise<IGit>((c, e) => {
cp.exec('which git', (err, gitPathBuffer) => {
if (err) {
return e('git not found');
}
const path = gitPathBuffer.toString().replace(/^\s+|\s+$/g, '');
function getVersion(path: string) {
onLookup(path);
// make sure git executes
cp.exec('git --version', (err, stdout) => {
if (err) {
return e('git not found');
}
return c({ path, version: parseVersion(stdout.trim()) });
});
}
if (path !== '/usr/bin/git') {
return getVersion(path);
}
// must check if XCode is installed
cp.exec('xcode-select -p', (err: any) => {
if (err && err.code === 2) {
// git is not installed, and launching /usr/bin/git
// will prompt the user to install it
return e('git not found');
}
getVersion(path);
});
});
});
}
function findSystemGitWin32(base: string, onLookup: (path: string) => void): Promise<IGit> {
if (!base) {
return Promise.reject<IGit>('Not found');
}
return findSpecificGit(path.join(base, 'Git', 'cmd', 'git.exe'), onLookup);
}
function findGitWin32InPath(onLookup: (path: string) => void): Promise<IGit> {
const whichPromise = new Promise<string>((c, e) => which('git.exe', (err, path) => err ? e(err) : c(path)));
return whichPromise.then(path => findSpecificGit(path, onLookup));
}
function findGitWin32(onLookup: (path: string) => void): Promise<IGit> {
return findSystemGitWin32(process.env['ProgramW6432'] as string, onLookup)
.then(undefined, () => findSystemGitWin32(process.env['ProgramFiles(x86)'] as string, onLookup))
.then(undefined, () => findSystemGitWin32(process.env['ProgramFiles'] as string, onLookup))
.then(undefined, () => findSystemGitWin32(path.join(process.env['LocalAppData'] as string, 'Programs'), onLookup))
.then(undefined, () => findGitWin32InPath(onLookup));
}
export async function findGit(hint: string | string[] | undefined, onLookup: (path: string) => void): Promise<IGit> {
const hints = Array.isArray(hint) ? hint : hint ? [hint] : [];
for (const hint of hints) {
try {
return await findSpecificGit(hint, onLookup);
} catch {
// noop
}
}
try {
switch (process.platform) {
case 'darwin': return await findGitDarwin(onLookup);
case 'win32': return await findGitWin32(onLookup);
default: return await findSpecificGit('git', onLookup);
}
} catch {
// noop
}
throw new Error('Git installation not found.');
}
export interface IExecutionResult<T extends string | Buffer> {
exitCode: number;
stdout: T;
stderr: string;
}
function cpErrorHandler(cb: (reason?: any) => void): (reason?: any) => void {
return err => {
if (/ENOENT/.test(err.message)) {
err = new GitError({
error: err,
message: 'Failed to execute git (ENOENT)',
gitErrorCode: GitErrorCodes.NotAGitRepository
});
}
cb(err);
};
}
export interface SpawnOptions extends cp.SpawnOptions {
input?: string;
encoding?: string;
log?: boolean;
cancellationToken?: CancellationToken;
onSpawn?: (childProcess: cp.ChildProcess) => void;
}
async function exec(child: cp.ChildProcess, cancellationToken?: CancellationToken): Promise<IExecutionResult<Buffer>> {
if (!child.stdout || !child.stderr) {
throw new GitError({ message: 'Failed to get stdout or stderr from git process.' });
}
if (cancellationToken && cancellationToken.isCancellationRequested) {
throw new GitError({ message: 'Cancelled' });
}
const disposables: IDisposable[] = [];
const once = (ee: NodeJS.EventEmitter, name: string, fn: (...args: any[]) => void) => {
ee.once(name, fn);
disposables.push(toDisposable(() => ee.removeListener(name, fn)));
};
const on = (ee: NodeJS.EventEmitter, name: string, fn: (...args: any[]) => void) => {
ee.on(name, fn);
disposables.push(toDisposable(() => ee.removeListener(name, fn)));
};
let result = Promise.all<any>([
new Promise<number>((c, e) => {
once(child, 'error', cpErrorHandler(e));
once(child, 'exit', c);
}),
new Promise<Buffer>(c => {
const buffers: Buffer[] = [];
on(child.stdout!, 'data', (b: Buffer) => buffers.push(b));
once(child.stdout!, 'close', () => c(Buffer.concat(buffers)));
}),
new Promise<string>(c => {
const buffers: Buffer[] = [];
on(child.stderr!, 'data', (b: Buffer) => buffers.push(b));
once(child.stderr!, 'close', () => c(Buffer.concat(buffers).toString('utf8')));
})
]) as Promise<[number, Buffer, string]>;
if (cancellationToken) {
const cancellationPromise = new Promise<[number, Buffer, string]>((_, e) => {
onceEvent(cancellationToken.onCancellationRequested)(() => {
try {
child.kill();
} catch (err) {
// noop
}
e(new GitError({ message: 'Cancelled' }));
});
});
result = Promise.race([result, cancellationPromise]);
}
try {
const [exitCode, stdout, stderr] = await result;
return { exitCode, stdout, stderr };
} finally {
dispose(disposables);
}
}
export interface IGitErrorData {
error?: Error;
message?: string;
stdout?: string;
stderr?: string;
exitCode?: number;
gitErrorCode?: string;
gitCommand?: string;
}
export class GitError {
error?: Error;
message: string;
stdout?: string;
stderr?: string;
exitCode?: number;
gitErrorCode?: string;
gitCommand?: string;
constructor(data: IGitErrorData) {
if (data.error) {
this.error = data.error;
this.message = data.error.message;
} else {
this.error = undefined;
this.message = '';
}
this.message = this.message || data.message || 'Git error';
this.stdout = data.stdout;
this.stderr = data.stderr;
this.exitCode = data.exitCode;
this.gitErrorCode = data.gitErrorCode;
this.gitCommand = data.gitCommand;
}
toString(): string {
let result = this.message + ' ' + JSON.stringify({
exitCode: this.exitCode,
gitErrorCode: this.gitErrorCode,
gitCommand: this.gitCommand,
stdout: this.stdout,
stderr: this.stderr
}, null, 2);
if (this.error) {
result += (<any>this.error).stack;
}
return result;
}
}
export interface IGitOptions {
gitPath: string;
version: string;
env?: any;
}
function getGitErrorCode(stderr: string): string | undefined {
if (/Another git process seems to be running in this repository|If no other git process is currently running/.test(stderr)) {
return GitErrorCodes.RepositoryIsLocked;
} else if (/Authentication failed/i.test(stderr)) {
return GitErrorCodes.AuthenticationFailed;
} else if (/Not a git repository/i.test(stderr)) {
return GitErrorCodes.NotAGitRepository;
} else if (/bad config file/.test(stderr)) {
return GitErrorCodes.BadConfigFile;
} else if (/cannot make pipe for command substitution|cannot create standard input pipe/.test(stderr)) {
return GitErrorCodes.CantCreatePipe;
} else if (/Repository not found/.test(stderr)) {
return GitErrorCodes.RepositoryNotFound;
} else if (/unable to access/.test(stderr)) {
return GitErrorCodes.CantAccessRemote;
} else if (/branch '.+' is not fully merged/.test(stderr)) {
return GitErrorCodes.BranchNotFullyMerged;
} else if (/Couldn\'t find remote ref/.test(stderr)) {
return GitErrorCodes.NoRemoteReference;
} else if (/A branch named '.+' already exists/.test(stderr)) {
return GitErrorCodes.BranchAlreadyExists;
} else if (/'.+' is not a valid branch name/.test(stderr)) {
return GitErrorCodes.InvalidBranchName;
} else if (/Please,? commit your changes or stash them/.test(stderr)) {
return GitErrorCodes.DirtyWorkTree;
}
return undefined;
}
// https://github.com/microsoft/vscode/issues/89373
// https://github.com/git-for-windows/git/issues/2478
function sanitizePath(path: string): string {
return path.replace(/^([a-z]):\\/i, (_, letter) => `${letter.toUpperCase()}:\\`);
}
const COMMIT_FORMAT = '%H%n%aN%n%aE%n%at%n%ct%n%P%n%B';
export interface ICloneOptions {
readonly parentPath: string;
readonly progress: Progress<{ increment: number }>;
readonly recursive?: boolean;
}
export class Git {
readonly path: string;
private env: any;
private _onOutput = new EventEmitter();
get onOutput(): EventEmitter { return this._onOutput; }
constructor(options: IGitOptions) {
this.path = options.gitPath;
this.env = options.env || {};
}
open(repository: string, dotGit: string): Repository {
return new Repository(this, repository, dotGit);
}
async init(repository: string): Promise<void> {
await this.exec(repository, ['init']);
return;
}
async clone(url: string, options: ICloneOptions, cancellationToken?: CancellationToken): Promise<string> {
let baseFolderName = decodeURI(url).replace(/[\/]+$/, '').replace(/^.*[\/\\]/, '').replace(/\.git$/, '') || 'repository';
let folderName = baseFolderName;
let folderPath = path.join(options.parentPath, folderName);
let count = 1;
while (count < 20 && await new Promise(c => exists(folderPath, c))) {
folderName = `${baseFolderName}-${count++}`;
folderPath = path.join(options.parentPath, folderName);
}
await mkdirp(options.parentPath);
const onSpawn = (child: cp.ChildProcess) => {
const decoder = new StringDecoder('utf8');
const lineStream = new byline.LineStream({ encoding: 'utf8' });
child.stderr!.on('data', (buffer: Buffer) => lineStream.write(decoder.write(buffer)));
let totalProgress = 0;
let previousProgress = 0;
lineStream.on('data', (line: string) => {
let match: RegExpMatchArray | null = null;
if (match = /Counting objects:\s*(\d+)%/i.exec(line)) {
totalProgress = Math.floor(parseInt(match[1]) * 0.1);
} else if (match = /Compressing objects:\s*(\d+)%/i.exec(line)) {
totalProgress = 10 + Math.floor(parseInt(match[1]) * 0.1);
} else if (match = /Receiving objects:\s*(\d+)%/i.exec(line)) {
totalProgress = 20 + Math.floor(parseInt(match[1]) * 0.4);
} else if (match = /Resolving deltas:\s*(\d+)%/i.exec(line)) {
totalProgress = 60 + Math.floor(parseInt(match[1]) * 0.4);
}
if (totalProgress !== previousProgress) {
options.progress.report({ increment: totalProgress - previousProgress });
previousProgress = totalProgress;
}
});
};
try {
let command = ['clone', url.includes(' ') ? encodeURI(url) : url, folderPath, '--progress'];
if (options.recursive) {
command.push('--recursive');
}
await this.exec(options.parentPath, command, { cancellationToken, onSpawn });
} catch (err) {
if (err.stderr) {
err.stderr = err.stderr.replace(/^Cloning.+$/m, '').trim();
err.stderr = err.stderr.replace(/^ERROR:\s+/, '').trim();
}
throw err;
}
return folderPath;
}
async getRepositoryRoot(repositoryPath: string): Promise<string> {
const result = await this.exec(repositoryPath, ['rev-parse', '--show-toplevel'], { log: false });
// Keep trailing spaces which are part of the directory name
const repoPath = path.normalize(result.stdout.trimLeft().replace(/[\r\n]+$/, ''));
if (isWindows) {
// On Git 2.25+ if you call `rev-parse --show-toplevel` on a mapped drive, instead of getting the mapped drive path back, you get the UNC path for the mapped drive.
// So we will try to normalize it back to the mapped drive path, if possible
const repoUri = Uri.file(repoPath);
const pathUri = Uri.file(repositoryPath);
if (repoUri.authority.length !== 0 && pathUri.authority.length === 0) {
let match = /(?<=^\/?)([a-zA-Z])(?=:\/)/.exec(pathUri.path);
if (match !== null) {
const [, letter] = match;
try {
const networkPath = await new Promise<string | undefined>(resolve =>
realpath.native(`${letter}:`, { encoding: 'utf8' }, (err, resolvedPath) =>
resolve(err !== null ? undefined : resolvedPath),
),
);
if (networkPath !== undefined) {
return path.normalize(
repoUri.fsPath.replace(
networkPath,
`${letter.toLowerCase()}:${networkPath.endsWith('\\') ? '\\' : ''}`
),
);
}
} catch { }
}
return path.normalize(pathUri.fsPath);
}
}
return repoPath;
}
async getRepositoryDotGit(repositoryPath: string): Promise<string> {
const result = await this.exec(repositoryPath, ['rev-parse', '--git-dir']);
let dotGitPath = result.stdout.trim();
if (!path.isAbsolute(dotGitPath)) {
dotGitPath = path.join(repositoryPath, dotGitPath);
}
return path.normalize(dotGitPath);
}
async exec(cwd: string, args: string[], options: SpawnOptions = {}): Promise<IExecutionResult<string>> {
options = assign({ cwd }, options || {});
return await this._exec(args, options);
}
async exec2(args: string[], options: SpawnOptions = {}): Promise<IExecutionResult<string>> {
return await this._exec(args, options);
}
stream(cwd: string, args: string[], options: SpawnOptions = {}): cp.ChildProcess {
options = assign({ cwd }, options || {});
return this.spawn(args, options);
}
private async _exec(args: string[], options: SpawnOptions = {}): Promise<IExecutionResult<string>> {
const child = this.spawn(args, options);
if (options.onSpawn) {
options.onSpawn(child);
}
if (options.input) {
child.stdin!.end(options.input, 'utf8');
}
const bufferResult = await exec(child, options.cancellationToken);
if (options.log !== false && bufferResult.stderr.length > 0) {
this.log(`${bufferResult.stderr}\n`);
}
let encoding = options.encoding || 'utf8';
encoding = iconv.encodingExists(encoding) ? encoding : 'utf8';
const result: IExecutionResult<string> = {
exitCode: bufferResult.exitCode,
stdout: iconv.decode(bufferResult.stdout, encoding),
stderr: bufferResult.stderr
};
if (bufferResult.exitCode) {
return Promise.reject<IExecutionResult<string>>(new GitError({
message: 'Failed to execute git',
stdout: result.stdout,
stderr: result.stderr,
exitCode: result.exitCode,
gitErrorCode: getGitErrorCode(result.stderr),
gitCommand: args[0]
}));
}
return result;
}
spawn(args: string[], options: SpawnOptions = {}): cp.ChildProcess {
if (!this.path) {
throw new Error('git could not be found in the system.');
}
if (!options) {
options = {};
}
if (!options.stdio && !options.input) {
options.stdio = ['ignore', null, null]; // Unless provided, ignore stdin and leave default streams for stdout and stderr
}
options.env = assign({}, process.env, this.env, options.env || {}, {
VSCODE_GIT_COMMAND: args[0],
LC_ALL: 'en_US.UTF-8',
LANG: 'en_US.UTF-8',
GIT_PAGER: 'cat'
});
if (options.cwd) {
options.cwd = sanitizePath(options.cwd);
}
if (options.log !== false) {
this.log(`> git ${args.join(' ')}\n`);
}
return cp.spawn(this.path, args, options);
}
private log(output: string): void {
this._onOutput.emit('log', output);
}
}
export interface Commit {
hash: string;
message: string;
parents: string[];
authorDate?: Date;
authorName?: string;
authorEmail?: string;
commitDate?: Date;
}
export class GitStatusParser {
private lastRaw = '';
private result: IFileStatus[] = [];
get status(): IFileStatus[] {
return this.result;
}
update(raw: string): void {
let i = 0;
let nextI: number | undefined;
raw = this.lastRaw + raw;
while ((nextI = this.parseEntry(raw, i)) !== undefined) {
i = nextI;
}
this.lastRaw = raw.substr(i);
}
private parseEntry(raw: string, i: number): number | undefined {
if (i + 4 >= raw.length) {
return;
}
let lastIndex: number;
const entry: IFileStatus = {
x: raw.charAt(i++),
y: raw.charAt(i++),
rename: undefined,
path: ''
};
// space
i++;
if (entry.x === 'R' || entry.x === 'C') {
lastIndex = raw.indexOf('\0', i);
if (lastIndex === -1) {
return;
}
entry.rename = raw.substring(i, lastIndex);
i = lastIndex + 1;
}
lastIndex = raw.indexOf('\0', i);
if (lastIndex === -1) {
return;
}
entry.path = raw.substring(i, lastIndex);
// If path ends with slash, it must be a nested git repo
if (entry.path[entry.path.length - 1] !== '/') {
this.result.push(entry);
}
return lastIndex + 1;
}
}
export interface Submodule {
name: string;
path: string;
url: string;
}
export function parseGitmodules(raw: string): Submodule[] {
const regex = /\r?\n/g;
let position = 0;
let match: RegExpExecArray | null = null;
const result: Submodule[] = [];
let submodule: Partial<Submodule> = {};
function parseLine(line: string): void {
const sectionMatch = /^\s*\[submodule "([^"]+)"\]\s*$/.exec(line);
if (sectionMatch) {
if (submodule.name && submodule.path && submodule.url) {
result.push(submodule as Submodule);
}
const name = sectionMatch[1];
if (name) {
submodule = { name };
return;
}
}
if (!submodule) {
return;
}
const propertyMatch = /^\s*(\w+)\s*=\s*(.*)$/.exec(line);
if (!propertyMatch) {
return;
}
const [, key, value] = propertyMatch;
switch (key) {
case 'path': submodule.path = value; break;
case 'url': submodule.url = value; break;
}
}
while (match = regex.exec(raw)) {
parseLine(raw.substring(position, match.index));
position = match.index + match[0].length;
}
parseLine(raw.substring(position));
if (submodule.name && submodule.path && submodule.url) {
result.push(submodule as Submodule);
}
return result;
}
const commitRegex = /([0-9a-f]{40})\n(.*)\n(.*)\n(.*)\n(.*)\n(.*)(?:\n([^]*?))?(?:\x00)/gm;
export function parseGitCommits(data: string): Commit[] {
let commits: Commit[] = [];
let ref;
let authorName;
let authorEmail;
let authorDate;
let commitDate;
let parents;
let message;
let match;
do {
match = commitRegex.exec(data);
if (match === null) {
break;
}
[, ref, authorName, authorEmail, authorDate, commitDate, parents, message] = match;
if (message[message.length - 1] === '\n') {
message = message.substr(0, message.length - 1);
}
// Stop excessive memory usage by using substr -- https://bugs.chromium.org/p/v8/issues/detail?id=2869
commits.push({
hash: ` ${ref}`.substr(1),
message: ` ${message}`.substr(1),
parents: parents ? parents.split(' ') : [],
authorDate: new Date(Number(authorDate) * 1000),
authorName: ` ${authorName}`.substr(1),
authorEmail: ` ${authorEmail}`.substr(1),
commitDate: new Date(Number(commitDate) * 1000),
});
} while (true);
return commits;
}
interface LsTreeElement {
mode: string;
type: string;
object: string;
size: string;
file: string;
}
export function parseLsTree(raw: string): LsTreeElement[] {
return raw.split('\n')
.filter(l => !!l)
.map(line => /^(\S+)\s+(\S+)\s+(\S+)\s+(\S+)\s+(.*)$/.exec(line)!)
.filter(m => !!m)
.map(([, mode, type, object, size, file]) => ({ mode, type, object, size, file }));
}
interface LsFilesElement {
mode: string;
object: string;
stage: string;
file: string;
}
export function parseLsFiles(raw: string): LsFilesElement[] {
return raw.split('\n')
.filter(l => !!l)
.map(line => /^(\S+)\s+(\S+)\s+(\S+)\s+(.*)$/.exec(line)!)
.filter(m => !!m)
.map(([, mode, object, stage, file]) => ({ mode, object, stage, file }));
}
export interface PullOptions {
unshallow?: boolean;
tags?: boolean;
readonly cancellationToken?: CancellationToken;
}
export enum ForcePushMode {
Force,
ForceWithLease
}
export class Repository {
constructor(
private _git: Git,
private repositoryRoot: string,
readonly dotGit: string
) { }
get git(): Git {
return this._git;
}
get root(): string {
return this.repositoryRoot;
}
// TODO@Joao: rename to exec
async run(args: string[], options: SpawnOptions = {}): Promise<IExecutionResult<string>> {
return await this.git.exec(this.repositoryRoot, args, options);
}
stream(args: string[], options: SpawnOptions = {}): cp.ChildProcess {
return this.git.stream(this.repositoryRoot, args, options);
}
spawn(args: string[], options: SpawnOptions = {}): cp.ChildProcess {
return this.git.spawn(args, options);
}
async config(scope: string, key: string, value: any = null, options: SpawnOptions = {}): Promise<string> {
const args = ['config'];
if (scope) {
args.push('--' + scope);
}
args.push(key);
if (value) {
args.push(value);
}
const result = await this.run(args, options);
return result.stdout.trim();
}
async getConfigs(scope: string): Promise<{ key: string; value: string; }[]> {
const args = ['config'];
if (scope) {
args.push('--' + scope);
}
args.push('-l');
const result = await this.run(args);
const lines = result.stdout.trim().split(/\r|\r\n|\n/);
return lines.map(entry => {
const equalsIndex = entry.indexOf('=');
return { key: entry.substr(0, equalsIndex), value: entry.substr(equalsIndex + 1) };
});
}
async log(options?: LogOptions): Promise<Commit[]> {
const maxEntries = options?.maxEntries ?? 32;
const args = ['log', `-n${maxEntries}`, `--format=${COMMIT_FORMAT}`, '-z', '--'];
if (options?.path) {
args.push(options.path);
}
const result = await this.run(args);
if (result.exitCode) {
// An empty repo
return [];
}
return parseGitCommits(result.stdout);
}
async logFile(uri: Uri, options?: LogFileOptions): Promise<Commit[]> {
const args = ['log', `--format=${COMMIT_FORMAT}`, '-z'];
if (options?.maxEntries && !options?.reverse) {
args.push(`-n${options.maxEntries}`);
}
if (options?.hash) {
// If we are reversing, we must add a range (with HEAD) because we are using --ancestry-path for better reverse walking
if (options?.reverse) {
args.push('--reverse', '--ancestry-path', `${options.hash}..HEAD`);
} else {
args.push(options.hash);
}
}
if (options?.sortByAuthorDate) {
args.push('--author-date-order');
}
args.push('--', uri.fsPath);
const result = await this.run(args);
if (result.exitCode) {
// No file history, e.g. a new file or untracked
return [];
}
return parseGitCommits(result.stdout);
}
async bufferString(object: string, encoding: string = 'utf8', autoGuessEncoding = false): Promise<string> {
const stdout = await this.buffer(object);
if (autoGuessEncoding) {
encoding = detectEncoding(stdout) || encoding;
}
encoding = iconv.encodingExists(encoding) ? encoding : 'utf8';
return iconv.decode(stdout, encoding);
}
async buffer(object: string): Promise<Buffer> {
const child = this.stream(['show', '--textconv', object]);
if (!child.stdout) {
return Promise.reject<Buffer>('Can\'t open file from git');
}
const { exitCode, stdout, stderr } = await exec(child);
if (exitCode) {
const err = new GitError({
message: 'Could not show object.',
exitCode
});
if (/exists on disk, but not in/.test(stderr)) {
err.gitErrorCode = GitErrorCodes.WrongCase;
}
return Promise.reject<Buffer>(err);
}
return stdout;
}
async getObjectDetails(treeish: string, path: string): Promise<{ mode: string, object: string, size: number }> {
if (!treeish) { // index
const elements = await this.lsfiles(path);
if (elements.length === 0) {
throw new GitError({ message: 'Path not known by git', gitErrorCode: GitErrorCodes.UnknownPath });
}
const { mode, object } = elements[0];
const catFile = await this.run(['cat-file', '-s', object]);
const size = parseInt(catFile.stdout);
return { mode, object, size };
}
const elements = await this.lstree(treeish, path);
if (elements.length === 0) {
throw new GitError({ message: 'Path not known by git', gitErrorCode: GitErrorCodes.UnknownPath });
}
const { mode, object, size } = elements[0];
return { mode, object, size: parseInt(size) };
}
async lstree(treeish: string, path: string): Promise<LsTreeElement[]> {
const { stdout } = await this.run(['ls-tree', '-l', treeish, '--', sanitizePath(path)]);
return parseLsTree(stdout);
}
async lsfiles(path: string): Promise<LsFilesElement[]> {
const { stdout } = await this.run(['ls-files', '--stage', '--', sanitizePath(path)]);
return parseLsFiles(stdout);
}
async getGitRelativePath(ref: string, relativePath: string): Promise<string> {
const relativePathLowercase = relativePath.toLowerCase();
const dirname = path.posix.dirname(relativePath) + '/';
const elements: { file: string; }[] = ref ? await this.lstree(ref, dirname) : await this.lsfiles(dirname);
const element = elements.filter(file => file.file.toLowerCase() === relativePathLowercase)[0];
if (!element) {
throw new GitError({ message: 'Git relative path not found.' });
}
return element.file;
}
async detectObjectType(object: string): Promise<{ mimetype: string, encoding?: string }> {
const child = await this.stream(['show', '--textconv', object]);
const buffer = await readBytes(child.stdout!, 4100);
try {
child.kill();
} catch (err) {
// noop
}
const encoding = detectUnicodeEncoding(buffer);
let isText = true;
if (encoding !== Encoding.UTF16be && encoding !== Encoding.UTF16le) {
for (let i = 0; i < buffer.length; i++) {
if (buffer.readInt8(i) === 0) {
isText = false;
break;
}
}
}
if (!isText) {
const result = filetype(buffer);
if (!result) {
return { mimetype: 'application/octet-stream' };
} else {
return { mimetype: result.mime };
}
}
if (encoding) {
return { mimetype: 'text/plain', encoding };
} else {
// TODO@JOAO: read the setting OUTSIDE!
return { mimetype: 'text/plain' };
}
}
async apply(patch: string, reverse?: boolean): Promise<void> {
const args = ['apply', patch];
if (reverse) {
args.push('-R');
}
try {
await this.run(args);
} catch (err) {
if (/patch does not apply/.test(err.stderr)) {
err.gitErrorCode = GitErrorCodes.PatchDoesNotApply;
}
throw err;
}
}
async diff(cached = false): Promise<string> {
const args = ['diff'];
if (cached) {
args.push('--cached');
}
const result = await this.run(args);
return result.stdout;
}
diffWithHEAD(): Promise<Change[]>;
diffWithHEAD(path: string): Promise<string>;
diffWithHEAD(path?: string | undefined): Promise<string | Change[]>;
async diffWithHEAD(path?: string | undefined): Promise<string | Change[]> {
if (!path) {
return await this.diffFiles(false);
}
const args = ['diff', '--', sanitizePath(path)];
const result = await this.run(args);
return result.stdout;
}
diffWith(ref: string): Promise<Change[]>;
diffWith(ref: string, path: string): Promise<string>;
diffWith(ref: string, path?: string | undefined): Promise<string | Change[]>;
async diffWith(ref: string, path?: string): Promise<string | Change[]> {
if (!path) {
return await this.diffFiles(false, ref);
}
const args = ['diff', ref, '--', sanitizePath(path)];
const result = await this.run(args);
return result.stdout;
}
diffIndexWithHEAD(): Promise<Change[]>;
diffIndexWithHEAD(path: string): Promise<string>;
diffIndexWithHEAD(path?: string | undefined): Promise<string | Change[]>;
async diffIndexWithHEAD(path?: string): Promise<string | Change[]> {
if (!path) {
return await this.diffFiles(true);
}
const args = ['diff', '--cached', '--', sanitizePath(path)];
const result = await this.run(args);
return result.stdout;
}
diffIndexWith(ref: string): Promise<Change[]>;
diffIndexWith(ref: string, path: string): Promise<string>;
diffIndexWith(ref: string, path?: string | undefined): Promise<string | Change[]>;
async diffIndexWith(ref: string, path?: string): Promise<string | Change[]> {
if (!path) {
return await this.diffFiles(true, ref);
}
const args = ['diff', '--cached', ref, '--', sanitizePath(path)];
const result = await this.run(args);
return result.stdout;
}
async diffBlobs(object1: string, object2: string): Promise<string> {
const args = ['diff', object1, object2];
const result = await this.run(args);
return result.stdout;
}
diffBetween(ref1: string, ref2: string): Promise<Change[]>;
diffBetween(ref1: string, ref2: string, path: string): Promise<string>;
diffBetween(ref1: string, ref2: string, path?: string | undefined): Promise<string | Change[]>;
async diffBetween(ref1: string, ref2: string, path?: string): Promise<string | Change[]> {
const range = `${ref1}...${ref2}`;
if (!path) {
return await this.diffFiles(false, range);
}
const args = ['diff', range, '--', sanitizePath(path)];
const result = await this.run(args);
return result.stdout.trim();
}
private async diffFiles(cached: boolean, ref?: string): Promise<Change[]> {
const args = ['diff', '--name-status', '-z', '--diff-filter=ADMR'];
if (cached) {
args.push('--cached');
}
if (ref) {
args.push(ref);
}
const gitResult = await this.run(args);
if (gitResult.exitCode) {
return [];
}
const entries = gitResult.stdout.split('\x00');
let index = 0;
const result: Change[] = [];
entriesLoop:
while (index < entries.length - 1) {
const change = entries[index++];
const resourcePath = entries[index++];
if (!change || !resourcePath) {
break;
}
const originalUri = Uri.file(path.isAbsolute(resourcePath) ? resourcePath : path.join(this.repositoryRoot, resourcePath));
let status: Status = Status.UNTRACKED;
// Copy or Rename status comes with a number, e.g. 'R100'. We don't need the number, so we use only first character of the status.
switch (change[0]) {
case 'M':
status = Status.MODIFIED;
break;
case 'A':
status = Status.INDEX_ADDED;
break;
case 'D':
status = Status.DELETED;
break;
// Rename contains two paths, the second one is what the file is renamed/copied to.
case 'R':
if (index >= entries.length) {
break;
}
const newPath = entries[index++];
if (!newPath) {
break;
}
const uri = Uri.file(path.isAbsolute(newPath) ? newPath : path.join(this.repositoryRoot, newPath));
result.push({
uri,
renameUri: uri,
originalUri,
status: Status.INDEX_RENAMED
});
continue;
default:
// Unknown status
break entriesLoop;
}
result.push({
status,
originalUri,
uri: originalUri,
renameUri: originalUri,
});
}
return result;
}
async getMergeBase(ref1: string, ref2: string): Promise<string> {
const args = ['merge-base', ref1, ref2];
const result = await this.run(args);
return result.stdout.trim();
}
async hashObject(data: string): Promise<string> {
const args = ['hash-object', '-w', '--stdin'];
const result = await this.run(args, { input: data });
return result.stdout.trim();
}
async add(paths: string[], opts?: { update?: boolean }): Promise<void> {
const args = ['add'];
if (opts && opts.update) {
args.push('-u');
} else {
args.push('-A');
}
if (paths && paths.length) {
for (const chunk of splitInChunks(paths.map(sanitizePath), MAX_CLI_LENGTH)) {
await this.run([...args, '--', ...chunk]);
}
} else {
await this.run([...args, '--', '.']);
}
}
async rm(paths: string[]): Promise<void> {
const args = ['rm', '--'];
if (!paths || !paths.length) {
return;
}
args.push(...paths.map(sanitizePath));
await this.run(args);
}
async stage(path: string, data: string): Promise<void> {
const child = this.stream(['hash-object', '--stdin', '-w', '--path', sanitizePath(path)], { stdio: [null, null, null] });
child.stdin!.end(data, 'utf8');
const { exitCode, stdout } = await exec(child);
const hash = stdout.toString('utf8');
if (exitCode) {
throw new GitError({
message: 'Could not hash object.',
exitCode: exitCode
});
}
const treeish = await this.getCommit('HEAD').then(() => 'HEAD', () => '');
let mode: string;
let add: string = '';
try {
const details = await this.getObjectDetails(treeish, path);
mode = details.mode;
} catch (err) {
if (err.gitErrorCode !== GitErrorCodes.UnknownPath) {
throw err;
}
mode = '100644';
add = '--add';
}
await this.run(['update-index', add, '--cacheinfo', mode, hash, path]);
}
async checkout(treeish: string, paths: string[], opts: { track?: boolean } = Object.create(null)): Promise<void> {
const args = ['checkout', '-q'];
if (opts.track) {
args.push('--track');
}
if (treeish) {
args.push(treeish);
}
try {
if (paths && paths.length > 0) {
for (const chunk of splitInChunks(paths.map(sanitizePath), MAX_CLI_LENGTH)) {
await this.run([...args, '--', ...chunk]);
}
} else {
await this.run(args);
}
} catch (err) {
if (/Please,? commit your changes or stash them/.test(err.stderr || '')) {
err.gitErrorCode = GitErrorCodes.DirtyWorkTree;
}
throw err;
}
}
async commit(message: string, opts: CommitOptions = Object.create(null)): Promise<void> {
const args = ['commit', '--quiet', '--allow-empty-message', '--file', '-'];
if (opts.all) {
args.push('--all');
}
if (opts.amend) {
args.push('--amend');
}
if (opts.signoff) {
args.push('--signoff');
}
if (opts.signCommit) {
args.push('-S');
}
if (opts.empty) {
args.push('--allow-empty');
}
if (opts.noVerify) {
args.push('--no-verify');
}
try {
await this.run(args, { input: message || '' });
} catch (commitErr) {
await this.handleCommitError(commitErr);
}
}
async rebaseAbort(): Promise<void> {
await this.run(['rebase', '--abort']);
}
async rebaseContinue(): Promise<void> {
const args = ['rebase', '--continue'];
try {
await this.run(args);
} catch (commitErr) {
await this.handleCommitError(commitErr);
}
}
private async handleCommitError(commitErr: any): Promise<void> {
if (/not possible because you have unmerged files/.test(commitErr.stderr || '')) {
commitErr.gitErrorCode = GitErrorCodes.UnmergedChanges;
throw commitErr;
}
try {
await this.run(['config', '--get-all', 'user.name']);
} catch (err) {
err.gitErrorCode = GitErrorCodes.NoUserNameConfigured;
throw err;
}
try {
await this.run(['config', '--get-all', 'user.email']);
} catch (err) {
err.gitErrorCode = GitErrorCodes.NoUserEmailConfigured;
throw err;
}
throw commitErr;
}
async branch(name: string, checkout: boolean, ref?: string): Promise<void> {
const args = checkout ? ['checkout', '-q', '-b', name, '--no-track'] : ['branch', '-q', name];
if (ref) {
args.push(ref);
}
await this.run(args);
}
async deleteBranch(name: string, force?: boolean): Promise<void> {
const args = ['branch', force ? '-D' : '-d', name];
await this.run(args);
}
async renameBranch(name: string): Promise<void> {
const args = ['branch', '-m', name];
await this.run(args);
}
async setBranchUpstream(name: string, upstream: string): Promise<void> {
const args = ['branch', '--set-upstream-to', upstream, name];
await this.run(args);
}
async deleteRef(ref: string): Promise<void> {
const args = ['update-ref', '-d', ref];
await this.run(args);
}
async merge(ref: string): Promise<void> {
const args = ['merge', ref];
try {
await this.run(args);
} catch (err) {
if (/^CONFLICT /m.test(err.stdout || '')) {
err.gitErrorCode = GitErrorCodes.Conflict;
}
throw err;
}
}
async tag(name: string, message?: string): Promise<void> {
let args = ['tag'];
if (message) {
args = [...args, '-a', name, '-m', message];
} else {
args = [...args, name];
}
await this.run(args);
}
async deleteTag(name: string): Promise<void> {
let args = ['tag', '-d', name];
await this.run(args);
}
async clean(paths: string[]): Promise<void> {
const pathsByGroup = groupBy(paths.map(sanitizePath), p => path.dirname(p));
const groups = Object.keys(pathsByGroup).map(k => pathsByGroup[k]);
const limiter = new Limiter(5);
const promises: Promise<any>[] = [];
const args = ['clean', '-f', '-q'];
for (const paths of groups) {
for (const chunk of splitInChunks(paths.map(sanitizePath), MAX_CLI_LENGTH)) {
promises.push(limiter.queue(() => this.run([...args, '--', ...chunk])));
}
}
await Promise.all(promises);
}
async undo(): Promise<void> {
await this.run(['clean', '-fd']);
try {
await this.run(['checkout', '--', '.']);
} catch (err) {
if (/did not match any file\(s\) known to git\./.test(err.stderr || '')) {
return;
}
throw err;
}
}
async reset(treeish: string, hard: boolean = false): Promise<void> {
const args = ['reset', hard ? '--hard' : '--soft', treeish];
await this.run(args);
}
async revert(treeish: string, paths: string[]): Promise<void> {
const result = await this.run(['branch']);
let args: string[];
// In case there are no branches, we must use rm --cached
if (!result.stdout) {
args = ['rm', '--cached', '-r'];
} else {
args = ['reset', '-q', treeish];
}
try {
if (paths && paths.length > 0) {
for (const chunk of splitInChunks(paths.map(sanitizePath), MAX_CLI_LENGTH)) {
await this.run([...args, '--', ...chunk]);
}
} else {
await this.run([...args, '--', '.']);
}
} catch (err) {
// In case there are merge conflicts to be resolved, git reset will output
// some "needs merge" data. We try to get around that.
if (/([^:]+: needs merge\n)+/m.test(err.stdout || '')) {
return;
}
throw err;
}
}
async addRemote(name: string, url: string): Promise<void> {
const args = ['remote', 'add', name, url];
await this.run(args);
}
async removeRemote(name: string): Promise<void> {
const args = ['remote', 'remove', name];
await this.run(args);
}
async renameRemote(name: string, newName: string): Promise<void> {
const args = ['remote', 'rename', name, newName];
await this.run(args);
}
async fetch(options: { remote?: string, ref?: string, all?: boolean, prune?: boolean, depth?: number, silent?: boolean } = {}): Promise<void> {
const args = ['fetch'];
const spawnOptions: SpawnOptions = {};
if (options.remote) {
args.push(options.remote);
if (options.ref) {
args.push(options.ref);
}
} else if (options.all) {
args.push('--all');
}
if (options.prune) {
args.push('--prune');
}
if (typeof options.depth === 'number') {
args.push(`--depth=${options.depth}`);
}
if (options.silent) {
spawnOptions.env = { 'VSCODE_GIT_FETCH_SILENT': 'true' };
}
try {
await this.run(args, spawnOptions);
} catch (err) {
if (/No remote repository specified\./.test(err.stderr || '')) {
err.gitErrorCode = GitErrorCodes.NoRemoteRepositorySpecified;
} else if (/Could not read from remote repository/.test(err.stderr || '')) {
err.gitErrorCode = GitErrorCodes.RemoteConnectionError;
}
throw err;
}
}
async pull(rebase?: boolean, remote?: string, branch?: string, options: PullOptions = {}): Promise<void> {
const args = ['pull'];
if (options.tags) {
args.push('--tags');
}
if (options.unshallow) {
args.push('--unshallow');
}
if (rebase) {
args.push('-r');
}
if (remote && branch) {
args.push(remote);
args.push(branch);
}
try {
await this.run(args, options);
} catch (err) {
if (/^CONFLICT \([^)]+\): \b/m.test(err.stdout || '')) {
err.gitErrorCode = GitErrorCodes.Conflict;
} else if (/Please tell me who you are\./.test(err.stderr || '')) {
err.gitErrorCode = GitErrorCodes.NoUserNameConfigured;
} else if (/Could not read from remote repository/.test(err.stderr || '')) {
err.gitErrorCode = GitErrorCodes.RemoteConnectionError;
} else if (/Pull is not possible because you have unmerged files|Cannot pull with rebase: You have unstaged changes|Your local changes to the following files would be overwritten|Please, commit your changes before you can merge/i.test(err.stderr)) {
err.stderr = err.stderr.replace(/Cannot pull with rebase: You have unstaged changes/i, 'Cannot pull with rebase, you have unstaged changes');
err.gitErrorCode = GitErrorCodes.DirtyWorkTree;
} else if (/cannot lock ref|unable to update local ref/i.test(err.stderr || '')) {
err.gitErrorCode = GitErrorCodes.CantLockRef;
} else if (/cannot rebase onto multiple branches/i.test(err.stderr || '')) {
err.gitErrorCode = GitErrorCodes.CantRebaseMultipleBranches;
}
throw err;
}
}
async rebase(branch: string, options: PullOptions = {}): Promise<void> {
const args = ['rebase'];
args.push(branch);
try {
await this.run(args, options);
} catch (err) {
if (/^CONFLICT \([^)]+\): \b/m.test(err.stdout || '')) {
err.gitErrorCode = GitErrorCodes.Conflict;
} else if (/cannot rebase onto multiple branches/i.test(err.stderr || '')) {
err.gitErrorCode = GitErrorCodes.CantRebaseMultipleBranches;
}
throw err;
}
}
async push(remote?: string, name?: string, setUpstream: boolean = false, tags = false, forcePushMode?: ForcePushMode): Promise<void> {
const args = ['push'];
if (forcePushMode === ForcePushMode.ForceWithLease) {
args.push('--force-with-lease');
} else if (forcePushMode === ForcePushMode.Force) {
args.push('--force');
}
if (setUpstream) {
args.push('-u');
}
if (tags) {
args.push('--follow-tags');
}
if (remote) {
args.push(remote);
}
if (name) {
args.push(name);
}
try {
await this.run(args);
} catch (err) {
if (/^error: failed to push some refs to\b/m.test(err.stderr || '')) {
err.gitErrorCode = GitErrorCodes.PushRejected;
} else if (/Could not read from remote repository/.test(err.stderr || '')) {
err.gitErrorCode = GitErrorCodes.RemoteConnectionError;
} else if (/^fatal: The current branch .* has no upstream branch/.test(err.stderr || '')) {
err.gitErrorCode = GitErrorCodes.NoUpstreamBranch;
} else if (/Permission.*denied/.test(err.stderr || '')) {
err.gitErrorCode = GitErrorCodes.PermissionDenied;
}
throw err;
}
}
async blame(path: string): Promise<string> {
try {
const args = ['blame', sanitizePath(path)];
const result = await this.run(args);
return result.stdout.trim();
} catch (err) {
if (/^fatal: no such path/.test(err.stderr || '')) {
err.gitErrorCode = GitErrorCodes.NoPathFound;
}
throw err;
}
}
async createStash(message?: string, includeUntracked?: boolean): Promise<void> {
try {
const args = ['stash', 'push'];
if (includeUntracked) {
args.push('-u');
}
if (message) {
args.push('-m', message);
}
await this.run(args);
} catch (err) {
if (/No local changes to save/.test(err.stderr || '')) {
err.gitErrorCode = GitErrorCodes.NoLocalChanges;
}
throw err;
}
}
async popStash(index?: number): Promise<void> {
const args = ['stash', 'pop'];
await this.popOrApplyStash(args, index);
}
async applyStash(index?: number): Promise<void> {
const args = ['stash', 'apply'];
await this.popOrApplyStash(args, index);
}
private async popOrApplyStash(args: string[], index?: number): Promise<void> {
try {
if (typeof index === 'number') {
args.push(`stash@{${index}}`);
}
await this.run(args);
} catch (err) {
if (/No stash found/.test(err.stderr || '')) {
err.gitErrorCode = GitErrorCodes.NoStashFound;
} else if (/error: Your local changes to the following files would be overwritten/.test(err.stderr || '')) {
err.gitErrorCode = GitErrorCodes.LocalChangesOverwritten;
} else if (/^CONFLICT/m.test(err.stdout || '')) {
err.gitErrorCode = GitErrorCodes.StashConflict;
}
throw err;
}
}
async dropStash(index?: number): Promise<void> {
const args = ['stash', 'drop'];
if (typeof index === 'number') {
args.push(`stash@{${index}}`);
}
try {
await this.run(args);
} catch (err) {
if (/No stash found/.test(err.stderr || '')) {
err.gitErrorCode = GitErrorCodes.NoStashFound;
}
throw err;
}
}
getStatus(limit = 5000): Promise<{ status: IFileStatus[]; didHitLimit: boolean; }> {
return new Promise<{ status: IFileStatus[]; didHitLimit: boolean; }>((c, e) => {
const parser = new GitStatusParser();
const env = { GIT_OPTIONAL_LOCKS: '0' };
const child = this.stream(['status', '-z', '-u'], { env });
const onExit = (exitCode: number) => {
if (exitCode !== 0) {
const stderr = stderrData.join('');
return e(new GitError({
message: 'Failed to execute git',
stderr,
exitCode,
gitErrorCode: getGitErrorCode(stderr),
gitCommand: 'status'
}));
}
c({ status: parser.status, didHitLimit: false });
};
const onStdoutData = (raw: string) => {
parser.update(raw);
if (parser.status.length > limit) {
child.removeListener('exit', onExit);
child.stdout!.removeListener('data', onStdoutData);
child.kill();
c({ status: parser.status.slice(0, limit), didHitLimit: true });
}
};
child.stdout!.setEncoding('utf8');
child.stdout!.on('data', onStdoutData);
const stderrData: string[] = [];
child.stderr!.setEncoding('utf8');
child.stderr!.on('data', raw => stderrData.push(raw as string));
child.on('error', cpErrorHandler(e));
child.on('exit', onExit);
});
}
async getHEAD(): Promise<Ref> {
try {
const result = await this.run(['symbolic-ref', '--short', 'HEAD']);
if (!result.stdout) {
throw new Error('Not in a branch');
}
return { name: result.stdout.trim(), commit: undefined, type: RefType.Head };
} catch (err) {
const result = await this.run(['rev-parse', 'HEAD']);
if (!result.stdout) {
throw new Error('Error parsing HEAD');
}
return { name: undefined, commit: result.stdout.trim(), type: RefType.Head };
}
}
async findTrackingBranches(upstreamBranch: string): Promise<Branch[]> {
const result = await this.run(['for-each-ref', '--format', '%(refname:short)%00%(upstream:short)', 'refs/heads']);
return result.stdout.trim().split('\n')
.map(line => line.trim().split('\0'))
.filter(([_, upstream]) => upstream === upstreamBranch)
.map(([ref]) => ({ name: ref, type: RefType.Head } as Branch));
}
async getRefs(opts?: { sort?: 'alphabetically' | 'committerdate', contains?: string, pattern?: string, count?: number }): Promise<Ref[]> {
const args = ['for-each-ref'];
if (opts?.count) {
args.push(`--count=${opts.count}`);
}
if (opts && opts.sort && opts.sort !== 'alphabetically') {
args.push('--sort', `-${opts.sort}`);
}
args.push('--format', '%(refname) %(objectname)');
if (opts?.pattern) {
args.push(opts.pattern);
}
if (opts?.contains) {
args.push('--contains', opts.contains);
}
const result = await this.run(args);
const fn = (line: string): Ref | null => {
let match: RegExpExecArray | null;
if (match = /^refs\/heads\/([^ ]+) ([0-9a-f]{40})$/.exec(line)) {
return { name: match[1], commit: match[2], type: RefType.Head };
} else if (match = /^refs\/remotes\/([^/]+)\/([^ ]+) ([0-9a-f]{40})$/.exec(line)) {
return { name: `${match[1]}/${match[2]}`, commit: match[3], type: RefType.RemoteHead, remote: match[1] };
} else if (match = /^refs\/tags\/([^ ]+) ([0-9a-f]{40})$/.exec(line)) {
return { name: match[1], commit: match[2], type: RefType.Tag };
}
return null;
};
return result.stdout.trim().split('\n')
.filter(line => !!line)
.map(fn)
.filter(ref => !!ref) as Ref[];
}
async getStashes(): Promise<Stash[]> {
const result = await this.run(['stash', 'list']);
const regex = /^stash@{(\d+)}:(.+)$/;
const rawStashes = result.stdout.trim().split('\n')
.filter(b => !!b)
.map(line => regex.exec(line) as RegExpExecArray)
.filter(g => !!g)
.map(([, index, description]: RegExpExecArray) => ({ index: parseInt(index), description }));
return rawStashes;
}
async getRemotes(): Promise<Remote[]> {
const result = await this.run(['remote', '--verbose']);
const lines = result.stdout.trim().split('\n').filter(l => !!l);
const remotes: MutableRemote[] = [];
for (const line of lines) {
const parts = line.split(/\s/);
const [name, url, type] = parts;
let remote = remotes.find(r => r.name === name);
if (!remote) {
remote = { name, isReadOnly: false };
remotes.push(remote);
}
if (/fetch/i.test(type)) {
remote.fetchUrl = url;
} else if (/push/i.test(type)) {
remote.pushUrl = url;
} else {
remote.fetchUrl = url;
remote.pushUrl = url;
}
// https://github.com/microsoft/vscode/issues/45271
remote.isReadOnly = remote.pushUrl === undefined || remote.pushUrl === 'no_push';
}
return remotes;
}
async getBranch(name: string): Promise<Branch> {
if (name === 'HEAD') {
return this.getHEAD();
}
let result = await this.run(['rev-parse', name]);
if (!result.stdout && /^@/.test(name)) {
const symbolicFullNameResult = await this.run(['rev-parse', '--symbolic-full-name', name]);
name = symbolicFullNameResult.stdout.trim();
result = await this.run(['rev-parse', name]);
}
if (!result.stdout) {
return Promise.reject<Branch>(new Error('No such branch'));
}
const commit = result.stdout.trim();
try {
const res2 = await this.run(['rev-parse', '--symbolic-full-name', name + '@{u}']);
const fullUpstream = res2.stdout.trim();
const match = /^refs\/remotes\/([^/]+)\/(.+)$/.exec(fullUpstream);
if (!match) {
throw new Error(`Could not parse upstream branch: ${fullUpstream}`);
}
const upstream = { remote: match[1], name: match[2] };
const res3 = await this.run(['rev-list', '--left-right', name + '...' + fullUpstream]);
let ahead = 0, behind = 0;
let i = 0;
while (i < res3.stdout.length) {
switch (res3.stdout.charAt(i)) {
case '<': ahead++; break;
case '>': behind++; break;
default: i++; break;
}
while (res3.stdout.charAt(i++) !== '\n') { /* no-op */ }
}
return { name, type: RefType.Head, commit, upstream, ahead, behind };
} catch (err) {
return { name, type: RefType.Head, commit };
}
}
async getBranches(query: BranchQuery): Promise<Ref[]> {
const refs = await this.getRefs({ contains: query.contains, pattern: query.pattern ? `refs/${query.pattern}` : undefined, count: query.count });
return refs.filter(value => (value.type !== RefType.Tag) && (query.remote || !value.remote));
}
// TODO: Support core.commentChar
stripCommitMessageComments(message: string): string {
return message.replace(/^\s*#.*$\n?/gm, '').trim();
}
async getSquashMessage(): Promise<string | undefined> {
const squashMsgPath = path.join(this.repositoryRoot, '.git', 'SQUASH_MSG');
try {
const raw = await fs.readFile(squashMsgPath, 'utf8');
return this.stripCommitMessageComments(raw);
} catch {
return undefined;
}
}
async getMergeMessage(): Promise<string | undefined> {
const mergeMsgPath = path.join(this.repositoryRoot, '.git', 'MERGE_MSG');
try {
const raw = await fs.readFile(mergeMsgPath, 'utf8');
return this.stripCommitMessageComments(raw);
} catch {
return undefined;
}
}
async getCommitTemplate(): Promise<string> {
try {
const result = await this.run(['config', '--get', 'commit.template']);
if (!result.stdout) {
return '';
}
// https://github.com/git/git/blob/3a0f269e7c82aa3a87323cb7ae04ac5f129f036b/path.c#L612
const homedir = os.homedir();
let templatePath = result.stdout.trim()
.replace(/^~([^\/]*)\//, (_, user) => `${user ? path.join(path.dirname(homedir), user) : homedir}/`);
if (!path.isAbsolute(templatePath)) {
templatePath = path.join(this.repositoryRoot, templatePath);
}
const raw = await fs.readFile(templatePath, 'utf8');
return this.stripCommitMessageComments(raw);
} catch (err) {
return '';
}
}
async getCommit(ref: string): Promise<Commit> {
const result = await this.run(['show', '-s', `--format=${COMMIT_FORMAT}`, '-z', ref]);
const commits = parseGitCommits(result.stdout);
if (commits.length === 0) {
return Promise.reject<Commit>('bad commit format');
}
return commits[0];
}
async updateSubmodules(paths: string[]): Promise<void> {
const args = ['submodule', 'update'];
for (const chunk of splitInChunks(paths.map(sanitizePath), MAX_CLI_LENGTH)) {
await this.run([...args, '--', ...chunk]);
}
}
async getSubmodules(): Promise<Submodule[]> {
const gitmodulesPath = path.join(this.root, '.gitmodules');
try {
const gitmodulesRaw = await fs.readFile(gitmodulesPath, 'utf8');
return parseGitmodules(gitmodulesRaw);
} catch (err) {
if (/ENOENT/.test(err.message)) {
return [];
}
throw err;
}
}
}