mirror of
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63 lines
1.7 KiB
JavaScript
63 lines
1.7 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 fs from 'fs'
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import crypto from 'crypto'
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import _ from 'lodash'
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import logger from '@overleaf/logger'
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import OError from '@overleaf/o-error'
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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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if (_callback == null) {
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_callback = function () {}
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}
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const callback = _.once(_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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const stream = fs.createReadStream(fsPath)
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stream.on('error', function (err) {
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return 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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})
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stream.on('end', function () {
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hash.end()
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return callback(null, hash.read(), byteLength)
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})
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return stream.pipe(hash)
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})
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}
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