/
git-locator-impl.ts
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/
git-locator-impl.ts
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// *****************************************************************************
// Copyright (C) 2017 TypeFox and others.
//
// This program and the accompanying materials are made available under the
// terms of the Eclipse Public License v. 2.0 which is available at
// http://www.eclipse.org/legal/epl-2.0.
//
// This Source Code may also be made available under the following Secondary
// Licenses when the conditions for such availability set forth in the Eclipse
// Public License v. 2.0 are satisfied: GNU General Public License, version 2
// with the GNU Classpath Exception which is available at
// https://www.gnu.org/software/classpath/license.html.
//
// SPDX-License-Identifier: EPL-2.0 OR GPL-2.0 WITH Classpath-exception-2.0
// *****************************************************************************
import * as fs from '@theia/core/shared/fs-extra';
import * as path from 'path';
import { GitLocator, GitLocateOptions } from './git-locator-protocol';
export type FindGitRepositories = (path: string, progressCb: (repos: string[]) => void) => Promise<string[]>;
const findGitRepositories: FindGitRepositories = require('find-git-repositories');
export interface GitLocateContext {
maxCount: number
readonly visited: Map<string, boolean>
}
export class GitLocatorImpl implements GitLocator {
protected readonly options: {
// eslint-disable-next-line @typescript-eslint/no-explicit-any
info: (message: string, ...args: any[]) => void
// eslint-disable-next-line @typescript-eslint/no-explicit-any
error: (message: string, ...args: any[]) => void
};
constructor(options?: {
// eslint-disable-next-line @typescript-eslint/no-explicit-any
info?: (message: string, ...args: any[]) => void
// eslint-disable-next-line @typescript-eslint/no-explicit-any
error?: (message: string, ...args: any[]) => void
}) {
this.options = {
info: (message, ...args) => console.info(message, ...args),
error: (message, ...args) => console.error(message, ...args),
...options
};
}
dispose(): void {
}
async locate(basePath: string, options: GitLocateOptions): Promise<string[]> {
return this.doLocate(basePath, {
maxCount: typeof options.maxCount === 'number' ? options.maxCount : -1,
visited: new Map<string, boolean>()
});
}
protected async doLocate(basePath: string, context: GitLocateContext): Promise<string[]> {
const realBasePath = fs.realpathSync(basePath);
if (context.visited.has(realBasePath)) {
return [];
}
context.visited.set(realBasePath, true);
try {
const stat = await fs.stat(realBasePath);
if (!stat.isDirectory()) {
return [];
}
const progress: string[] = [];
const paths = await findGitRepositories(realBasePath, repositories => {
progress.push(...repositories);
if (context.maxCount >= 0 && progress.length >= context.maxCount) {
return progress.slice(0, context.maxCount).map(GitLocatorImpl.map);
}
});
if (context.maxCount >= 0 && paths.length >= context.maxCount) {
return paths.slice(0, context.maxCount).map(GitLocatorImpl.map);
}
const repositoryPaths = paths.map(GitLocatorImpl.map);
return this.locateFrom(
newContext => this.generateNested(repositoryPaths, newContext),
context,
repositoryPaths
);
} catch (e) {
return [];
}
}
protected * generateNested(repositoryPaths: string[], context: GitLocateContext): IterableIterator<Promise<string[]>> {
for (const repository of repositoryPaths) {
yield this.locateNested(repository, context);
}
}
protected locateNested(repositoryPath: string, context: GitLocateContext): Promise<string[]> {
return new Promise<string[]>(resolve => {
fs.readdir(repositoryPath, async (err, files) => {
if (err) {
this.options.error(err.message, err);
resolve([]);
} else {
resolve(this.locateFrom(
newContext => this.generateRepositories(repositoryPath, files, newContext),
context
));
}
});
});
}
protected * generateRepositories(repositoryPath: string, files: string[], context: GitLocateContext): IterableIterator<Promise<string[]>> {
for (const file of files) {
if (file !== '.git') {
yield this.doLocate(path.join(repositoryPath, file), {
...context
});
}
}
}
protected async locateFrom(
generator: (context: GitLocateContext) => IterableIterator<Promise<string[]>>, parentContext: GitLocateContext, initial?: string[]
): Promise<string[]> {
const result: string[] = [];
if (initial) {
result.push(...initial);
}
const context = {
...parentContext,
maxCount: parentContext.maxCount - result.length
};
for (const locateRepositories of generator(context)) {
const repositories = await locateRepositories;
result.push(...repositories);
if (context.maxCount >= 0) {
if (result.length >= context.maxCount) {
return result.slice(0, context.maxCount);
}
context.maxCount -= repositories.length;
}
}
return result;
}
static map(repository: string): string {
return fs.realpathSync(path.dirname(repository));
}
}