ok
Direktori : /opt/alt/alt-nodejs12/root/usr/lib/node_modules/npm/node_modules.bundled/sha/ |
Current File : //opt/alt/alt-nodejs12/root/usr/lib/node_modules/npm/node_modules.bundled/sha/index.js |
'use strict' var Transform = require('stream').Transform var crypto = require('crypto') var fs = require('graceful-fs') exports.check = check exports.checkSync = checkSync exports.get = get exports.getSync = getSync exports.stream = stream function check(file, expected, options, cb) { if (typeof options === 'function') { cb = options options = undefined } expected = expected.toLowerCase().trim() get(file, options, function (er, actual) { if (er) { if (er.message) er.message += ' while getting shasum for ' + file return cb(er) } if (actual === expected) return cb(null) cb(new Error( 'shasum check failed for ' + file + '\n' + 'Expected: ' + expected + '\n' + 'Actual: ' + actual)) }) } function checkSync(file, expected, options) { expected = expected.toLowerCase().trim() var actual try { actual = getSync(file, options) } catch (er) { if (er.message) er.message += ' while getting shasum for ' + file throw er } if (actual !== expected) { var ex = new Error( 'shasum check failed for ' + file + '\n' + 'Expected: ' + expected + '\n' + 'Actual: ' + actual) throw ex } } function get(file, options, cb) { if (typeof options === 'function') { cb = options options = undefined } options = options || {} var algorithm = options.algorithm || 'sha1' var hash = crypto.createHash(algorithm) var source = fs.createReadStream(file) var errState = null source .on('error', function (er) { if (errState) return return cb(errState = er) }) .on('data', function (chunk) { if (errState) return hash.update(chunk) }) .on('end', function () { if (errState) return var actual = hash.digest("hex").toLowerCase().trim() cb(null, actual) }) } function getSync(file, options) { options = options || {} var algorithm = options.algorithm || 'sha1' var hash = crypto.createHash(algorithm) var source = fs.readFileSync(file) hash.update(source) return hash.digest("hex").toLowerCase().trim() } function stream(expected, options) { expected = expected.toLowerCase().trim() options = options || {} var algorithm = options.algorithm || 'sha1' var hash = crypto.createHash(algorithm) var stream = new Transform() stream._transform = function (chunk, encoding, callback) { hash.update(chunk) stream.push(chunk) callback() } stream._flush = function (cb) { var actual = hash.digest("hex").toLowerCase().trim() if (actual === expected) return cb(null) cb(new Error( 'shasum check failed for:\n' + ' Expected: ' + expected + '\n' + ' Actual: ' + actual)) this.push(null) } return stream }