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ass/src/hash.js

18 lines
693 B

const fs = require('fs-extra');
const crypto = require('crypto');
const toArray = require('stream-to-array');
const { log } = require('./utils');
/**
* Generates a SHA1 hash for the provided file
* @param {*} file The file to hash
* @returns The SHA1 hash
*/
module.exports = (file) =>
new Promise((resolve, reject) =>
toArray((fs.createReadStream(file.path)))
.then((parts) => Buffer.concat(parts.map((part) => (Buffer.isBuffer(part) ? part : Buffer.from(part)))))
.then((buf) => crypto.createHash('sha1').update(buf).digest('hex')) // skipcq: JS-D003
.then((hash) => log.debug(`Hash for ${file.originalname}`, hash, 'SHA1, hex').callback(resolve, hash))
.catch(reject));