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38 lines (31 loc) · 1.18 KB
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Copy pathcrypto.ts
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38 lines (31 loc) · 1.18 KB
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/*---------------------------------------------------------------------------------------------
* Copyright (c) Microsoft Corporation. All rights reserved.
* Licensed under the MIT License. See License.txt in the project root for license information.
*--------------------------------------------------------------------------------------------*/
import * as fs from 'fs';
import * as crypto from 'crypto';
import { once } from 'vs/base/common/functional';
export async function checksum(path: string, sha1hash: string | undefined): Promise<void> {
const checksumPromise = new Promise<string | undefined>((resolve, reject) => {
const input = fs.createReadStream(path);
const hash = crypto.createHash('sha1');
input.pipe(hash);
const done = once((err?: Error, result?: string) => {
input.removeAllListeners();
hash.removeAllListeners();
if (err) {
reject(err);
} else {
resolve(result);
}
});
input.once('error', done);
input.once('end', done);
hash.once('error', done);
hash.once('data', (data: Buffer) => done(undefined, data.toString('hex')));
});
const hash = await checksumPromise;
if (hash !== sha1hash) {
throw new Error('Hash mismatch');
}
}