47 lines
959 B
JavaScript
47 lines
959 B
JavaScript
'use strict'
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var crypto = require('crypto')
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var fs = require('fs')
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var alloc = require('buffer-alloc')
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var BUFFER_SIZE = 8192
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function md5FileSync (filename) {
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var fd = fs.openSync(filename, 'r')
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var hash = crypto.createHash('md5')
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var buffer = alloc(BUFFER_SIZE)
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try {
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var bytesRead
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do {
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bytesRead = fs.readSync(fd, buffer, 0, BUFFER_SIZE)
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hash.update(buffer.slice(0, bytesRead))
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} while (bytesRead === BUFFER_SIZE)
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} finally {
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fs.closeSync(fd)
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}
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return hash.digest('hex')
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}
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function md5File (filename, cb) {
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if (typeof cb !== 'function') throw new TypeError('Argument cb must be a function')
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var output = crypto.createHash('md5')
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var input = fs.createReadStream(filename)
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input.on('error', function (err) {
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cb(err)
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})
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output.once('readable', function () {
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cb(null, output.read().toString('hex'))
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})
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input.pipe(output)
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}
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module.exports = md5File
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module.exports.sync = md5FileSync
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