mirror of
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58 lines
1.6 KiB
JavaScript
58 lines
1.6 KiB
JavaScript
/* eslint-disable
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no-undef,
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no-unused-vars,
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*/
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// TODO: This file was created by bulk-decaffeinate.
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// Fix any style issues and re-enable lint.
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/*
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* decaffeinate suggestions:
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* DS102: Remove unnecessary code created because of implicit returns
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* DS207: Consider shorter variations of null checks
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* Full docs: https://github.com/decaffeinate/decaffeinate/blob/master/docs/suggestions.md
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*/
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import { promisify } from 'util'
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import fs from 'fs'
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import crypto from 'crypto'
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import OError from '@overleaf/o-error'
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import { pipeline } from 'stream'
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export function _getBlobHashFromString(string) {
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const byteLength = Buffer.byteLength(string)
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const hash = crypto.createHash('sha1')
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hash.setEncoding('hex')
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hash.update('blob ' + byteLength + '\x00')
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hash.update(string, 'utf8')
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hash.end()
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return hash.read()
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}
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export function _getBlobHash(fsPath, callback) {
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return fs.stat(fsPath, function (err, stats) {
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if (err != null) {
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OError.tag(err, 'failed to stat file in _getBlobHash', { fsPath })
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return callback(err)
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}
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const byteLength = stats.size
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const hash = crypto.createHash('sha1')
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hash.setEncoding('hex')
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hash.update('blob ' + byteLength + '\x00')
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pipeline(fs.createReadStream(fsPath), hash, err => {
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if (err) {
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callback(
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OError.tag(err, 'error streaming file from disk', {
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fsPath,
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byteLength,
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})
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)
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} else {
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hash.end()
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callback(null, hash.read(), byteLength)
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}
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})
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})
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}
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export const promises = {
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_getBlobHash: promisify(_getBlobHash),
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}
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