704 lines
19 KiB
JavaScript
704 lines
19 KiB
JavaScript
// Copyright Joyent, Inc. and other Node contributors.
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the
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// "Software"), to deal in the Software without restriction, including
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// without limitation the rights to use, copy, modify, merge, publish,
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// distribute, sublicense, and/or sell copies of the Software, and to permit
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// persons to whom the Software is furnished to do so, subject to the
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// following conditions:
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//
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// The above copyright notice and this permission notice shall be included
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// in all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
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// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
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// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
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// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
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// USE OR OTHER DEALINGS IN THE SOFTWARE.
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var getOwnPropertyDescriptors = Object.getOwnPropertyDescriptors ||
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function getOwnPropertyDescriptors(obj) {
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var keys = Object.keys(obj);
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var descriptors = {};
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for (var i = 0; i < keys.length; i++) {
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descriptors[keys[i]] = Object.getOwnPropertyDescriptor(obj, keys[i]);
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}
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return descriptors;
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};
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var formatRegExp = /%[sdj%]/g;
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exports.format = function(f) {
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if (!isString(f)) {
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var objects = [];
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for (var i = 0; i < arguments.length; i++) {
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objects.push(inspect(arguments[i]));
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}
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return objects.join(' ');
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}
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var i = 1;
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var args = arguments;
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var len = args.length;
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var str = String(f).replace(formatRegExp, function(x) {
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if (x === '%%') return '%';
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if (i >= len) return x;
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switch (x) {
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case '%s': return String(args[i++]);
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case '%d': return Number(args[i++]);
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case '%j':
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try {
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return JSON.stringify(args[i++]);
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} catch (_) {
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return '[Circular]';
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}
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default:
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return x;
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}
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});
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for (var x = args[i]; i < len; x = args[++i]) {
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if (isNull(x) || !isObject(x)) {
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str += ' ' + x;
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} else {
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str += ' ' + inspect(x);
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}
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}
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return str;
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};
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// Mark that a method should not be used.
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// Returns a modified function which warns once by default.
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// If --no-deprecation is set, then it is a no-op.
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exports.deprecate = function(fn, msg) {
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if (typeof process !== 'undefined' && process.noDeprecation === true) {
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return fn;
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}
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// Allow for deprecating things in the process of starting up.
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if (typeof process === 'undefined') {
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return function() {
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return exports.deprecate(fn, msg).apply(this, arguments);
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};
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}
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var warned = false;
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function deprecated() {
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if (!warned) {
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if (process.throwDeprecation) {
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throw new Error(msg);
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} else if (process.traceDeprecation) {
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console.trace(msg);
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} else {
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console.error(msg);
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}
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warned = true;
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}
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return fn.apply(this, arguments);
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}
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return deprecated;
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};
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var debugs = {};
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var debugEnviron;
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exports.debuglog = function(set) {
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if (isUndefined(debugEnviron))
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debugEnviron = process.env.NODE_DEBUG || '';
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set = set.toUpperCase();
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if (!debugs[set]) {
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if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
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var pid = process.pid;
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debugs[set] = function() {
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var msg = exports.format.apply(exports, arguments);
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console.error('%s %d: %s', set, pid, msg);
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};
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} else {
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debugs[set] = function() {};
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}
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}
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return debugs[set];
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};
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/**
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* Echos the value of a value. Trys to print the value out
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* in the best way possible given the different types.
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*
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* @param {Object} obj The object to print out.
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* @param {Object} opts Optional options object that alters the output.
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*/
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/* legacy: obj, showHidden, depth, colors*/
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function inspect(obj, opts) {
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// default options
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var ctx = {
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seen: [],
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stylize: stylizeNoColor
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};
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// legacy...
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if (arguments.length >= 3) ctx.depth = arguments[2];
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if (arguments.length >= 4) ctx.colors = arguments[3];
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if (isBoolean(opts)) {
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// legacy...
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ctx.showHidden = opts;
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} else if (opts) {
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// got an "options" object
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exports._extend(ctx, opts);
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}
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// set default options
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if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
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if (isUndefined(ctx.depth)) ctx.depth = 2;
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if (isUndefined(ctx.colors)) ctx.colors = false;
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if (isUndefined(ctx.customInspect)) ctx.customInspect = true;
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if (ctx.colors) ctx.stylize = stylizeWithColor;
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return formatValue(ctx, obj, ctx.depth);
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}
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exports.inspect = inspect;
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// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
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inspect.colors = {
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'bold' : [1, 22],
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'italic' : [3, 23],
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'underline' : [4, 24],
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'inverse' : [7, 27],
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'white' : [37, 39],
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'grey' : [90, 39],
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'black' : [30, 39],
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'blue' : [34, 39],
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'cyan' : [36, 39],
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'green' : [32, 39],
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'magenta' : [35, 39],
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'red' : [31, 39],
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'yellow' : [33, 39]
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};
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// Don't use 'blue' not visible on cmd.exe
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inspect.styles = {
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'special': 'cyan',
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'number': 'yellow',
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'boolean': 'yellow',
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'undefined': 'grey',
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'null': 'bold',
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'string': 'green',
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'date': 'magenta',
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// "name": intentionally not styling
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'regexp': 'red'
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};
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function stylizeWithColor(str, styleType) {
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var style = inspect.styles[styleType];
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if (style) {
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return '\u001b[' + inspect.colors[style][0] + 'm' + str +
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'\u001b[' + inspect.colors[style][1] + 'm';
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} else {
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return str;
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}
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}
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function stylizeNoColor(str, styleType) {
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return str;
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}
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function arrayToHash(array) {
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var hash = {};
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array.forEach(function(val, idx) {
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hash[val] = true;
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});
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return hash;
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}
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function formatValue(ctx, value, recurseTimes) {
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// Provide a hook for user-specified inspect functions.
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// Check that value is an object with an inspect function on it
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if (ctx.customInspect &&
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value &&
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isFunction(value.inspect) &&
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// Filter out the util module, it's inspect function is special
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value.inspect !== exports.inspect &&
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// Also filter out any prototype objects using the circular check.
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!(value.constructor && value.constructor.prototype === value)) {
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var ret = value.inspect(recurseTimes, ctx);
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if (!isString(ret)) {
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ret = formatValue(ctx, ret, recurseTimes);
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}
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return ret;
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}
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// Primitive types cannot have properties
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var primitive = formatPrimitive(ctx, value);
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if (primitive) {
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return primitive;
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}
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// Look up the keys of the object.
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var keys = Object.keys(value);
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var visibleKeys = arrayToHash(keys);
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if (ctx.showHidden) {
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keys = Object.getOwnPropertyNames(value);
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}
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// IE doesn't make error fields non-enumerable
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// http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx
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if (isError(value)
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&& (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) {
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return formatError(value);
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}
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// Some type of object without properties can be shortcutted.
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if (keys.length === 0) {
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if (isFunction(value)) {
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var name = value.name ? ': ' + value.name : '';
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return ctx.stylize('[Function' + name + ']', 'special');
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}
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if (isRegExp(value)) {
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return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
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}
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if (isDate(value)) {
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return ctx.stylize(Date.prototype.toString.call(value), 'date');
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}
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if (isError(value)) {
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return formatError(value);
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}
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}
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var base = '', array = false, braces = ['{', '}'];
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// Make Array say that they are Array
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if (isArray(value)) {
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array = true;
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braces = ['[', ']'];
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}
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// Make functions say that they are functions
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if (isFunction(value)) {
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var n = value.name ? ': ' + value.name : '';
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base = ' [Function' + n + ']';
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}
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// Make RegExps say that they are RegExps
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if (isRegExp(value)) {
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base = ' ' + RegExp.prototype.toString.call(value);
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}
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// Make dates with properties first say the date
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if (isDate(value)) {
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base = ' ' + Date.prototype.toUTCString.call(value);
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}
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// Make error with message first say the error
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if (isError(value)) {
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base = ' ' + formatError(value);
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}
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if (keys.length === 0 && (!array || value.length == 0)) {
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return braces[0] + base + braces[1];
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}
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if (recurseTimes < 0) {
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if (isRegExp(value)) {
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return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
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} else {
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return ctx.stylize('[Object]', 'special');
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}
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}
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ctx.seen.push(value);
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var output;
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if (array) {
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output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
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} else {
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output = keys.map(function(key) {
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return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
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});
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}
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ctx.seen.pop();
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return reduceToSingleString(output, base, braces);
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}
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function formatPrimitive(ctx, value) {
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if (isUndefined(value))
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return ctx.stylize('undefined', 'undefined');
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if (isString(value)) {
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var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
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.replace(/'/g, "\\'")
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.replace(/\\"/g, '"') + '\'';
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return ctx.stylize(simple, 'string');
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}
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if (isNumber(value))
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return ctx.stylize('' + value, 'number');
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if (isBoolean(value))
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return ctx.stylize('' + value, 'boolean');
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// For some reason typeof null is "object", so special case here.
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if (isNull(value))
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return ctx.stylize('null', 'null');
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}
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function formatError(value) {
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return '[' + Error.prototype.toString.call(value) + ']';
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}
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function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
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var output = [];
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for (var i = 0, l = value.length; i < l; ++i) {
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if (hasOwnProperty(value, String(i))) {
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output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
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String(i), true));
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} else {
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output.push('');
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}
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}
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keys.forEach(function(key) {
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if (!key.match(/^\d+$/)) {
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output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
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key, true));
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}
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});
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return output;
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}
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function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
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var name, str, desc;
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desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] };
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if (desc.get) {
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if (desc.set) {
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str = ctx.stylize('[Getter/Setter]', 'special');
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} else {
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str = ctx.stylize('[Getter]', 'special');
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}
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} else {
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if (desc.set) {
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str = ctx.stylize('[Setter]', 'special');
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}
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}
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if (!hasOwnProperty(visibleKeys, key)) {
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name = '[' + key + ']';
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}
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if (!str) {
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if (ctx.seen.indexOf(desc.value) < 0) {
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if (isNull(recurseTimes)) {
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str = formatValue(ctx, desc.value, null);
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} else {
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str = formatValue(ctx, desc.value, recurseTimes - 1);
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}
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if (str.indexOf('\n') > -1) {
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if (array) {
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str = str.split('\n').map(function(line) {
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return ' ' + line;
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}).join('\n').substr(2);
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} else {
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str = '\n' + str.split('\n').map(function(line) {
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return ' ' + line;
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}).join('\n');
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}
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}
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} else {
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str = ctx.stylize('[Circular]', 'special');
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}
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}
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if (isUndefined(name)) {
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if (array && key.match(/^\d+$/)) {
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return str;
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}
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name = JSON.stringify('' + key);
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if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
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name = name.substr(1, name.length - 2);
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name = ctx.stylize(name, 'name');
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} else {
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name = name.replace(/'/g, "\\'")
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.replace(/\\"/g, '"')
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.replace(/(^"|"$)/g, "'");
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name = ctx.stylize(name, 'string');
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}
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}
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return name + ': ' + str;
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}
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function reduceToSingleString(output, base, braces) {
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var numLinesEst = 0;
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var length = output.reduce(function(prev, cur) {
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numLinesEst++;
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if (cur.indexOf('\n') >= 0) numLinesEst++;
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return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
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}, 0);
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if (length > 60) {
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return braces[0] +
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(base === '' ? '' : base + '\n ') +
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' ' +
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output.join(',\n ') +
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' ' +
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braces[1];
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}
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return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
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}
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// NOTE: These type checking functions intentionally don't use `instanceof`
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// because it is fragile and can be easily faked with `Object.create()`.
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function isArray(ar) {
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return Array.isArray(ar);
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}
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exports.isArray = isArray;
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function isBoolean(arg) {
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return typeof arg === 'boolean';
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}
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exports.isBoolean = isBoolean;
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function isNull(arg) {
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return arg === null;
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}
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exports.isNull = isNull;
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function isNullOrUndefined(arg) {
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return arg == null;
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}
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exports.isNullOrUndefined = isNullOrUndefined;
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function isNumber(arg) {
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return typeof arg === 'number';
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}
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exports.isNumber = isNumber;
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function isString(arg) {
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return typeof arg === 'string';
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}
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exports.isString = isString;
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function isSymbol(arg) {
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return typeof arg === 'symbol';
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}
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exports.isSymbol = isSymbol;
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function isUndefined(arg) {
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return arg === void 0;
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}
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exports.isUndefined = isUndefined;
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function isRegExp(re) {
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return isObject(re) && objectToString(re) === '[object RegExp]';
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}
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exports.isRegExp = isRegExp;
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function isObject(arg) {
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return typeof arg === 'object' && arg !== null;
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}
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exports.isObject = isObject;
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function isDate(d) {
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return isObject(d) && objectToString(d) === '[object Date]';
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}
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exports.isDate = isDate;
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function isError(e) {
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return isObject(e) &&
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(objectToString(e) === '[object Error]' || e instanceof Error);
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}
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exports.isError = isError;
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function isFunction(arg) {
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return typeof arg === 'function';
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}
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exports.isFunction = isFunction;
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function isPrimitive(arg) {
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return arg === null ||
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typeof arg === 'boolean' ||
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typeof arg === 'number' ||
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typeof arg === 'string' ||
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typeof arg === 'symbol' || // ES6 symbol
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typeof arg === 'undefined';
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}
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exports.isPrimitive = isPrimitive;
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exports.isBuffer = require('./support/isBuffer');
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function objectToString(o) {
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return Object.prototype.toString.call(o);
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}
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function pad(n) {
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return n < 10 ? '0' + n.toString(10) : n.toString(10);
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}
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var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
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'Oct', 'Nov', 'Dec'];
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// 26 Feb 16:19:34
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function timestamp() {
|
|
var d = new Date();
|
|
var time = [pad(d.getHours()),
|
|
pad(d.getMinutes()),
|
|
pad(d.getSeconds())].join(':');
|
|
return [d.getDate(), months[d.getMonth()], time].join(' ');
|
|
}
|
|
|
|
|
|
// log is just a thin wrapper to console.log that prepends a timestamp
|
|
exports.log = function() {
|
|
console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments));
|
|
};
|
|
|
|
|
|
/**
|
|
* Inherit the prototype methods from one constructor into another.
|
|
*
|
|
* The Function.prototype.inherits from lang.js rewritten as a standalone
|
|
* function (not on Function.prototype). NOTE: If this file is to be loaded
|
|
* during bootstrapping this function needs to be rewritten using some native
|
|
* functions as prototype setup using normal JavaScript does not work as
|
|
* expected during bootstrapping (see mirror.js in r114903).
|
|
*
|
|
* @param {function} ctor Constructor function which needs to inherit the
|
|
* prototype.
|
|
* @param {function} superCtor Constructor function to inherit prototype from.
|
|
*/
|
|
exports.inherits = require('inherits');
|
|
|
|
exports._extend = function(origin, add) {
|
|
// Don't do anything if add isn't an object
|
|
if (!add || !isObject(add)) return origin;
|
|
|
|
var keys = Object.keys(add);
|
|
var i = keys.length;
|
|
while (i--) {
|
|
origin[keys[i]] = add[keys[i]];
|
|
}
|
|
return origin;
|
|
};
|
|
|
|
function hasOwnProperty(obj, prop) {
|
|
return Object.prototype.hasOwnProperty.call(obj, prop);
|
|
}
|
|
|
|
var kCustomPromisifiedSymbol = typeof Symbol !== 'undefined' ? Symbol('util.promisify.custom') : undefined;
|
|
|
|
exports.promisify = function promisify(original) {
|
|
if (typeof original !== 'function')
|
|
throw new TypeError('The "original" argument must be of type Function');
|
|
|
|
if (kCustomPromisifiedSymbol && original[kCustomPromisifiedSymbol]) {
|
|
var fn = original[kCustomPromisifiedSymbol];
|
|
if (typeof fn !== 'function') {
|
|
throw new TypeError('The "util.promisify.custom" argument must be of type Function');
|
|
}
|
|
Object.defineProperty(fn, kCustomPromisifiedSymbol, {
|
|
value: fn, enumerable: false, writable: false, configurable: true
|
|
});
|
|
return fn;
|
|
}
|
|
|
|
function fn() {
|
|
var promiseResolve, promiseReject;
|
|
var promise = new Promise(function (resolve, reject) {
|
|
promiseResolve = resolve;
|
|
promiseReject = reject;
|
|
});
|
|
|
|
var args = [];
|
|
for (var i = 0; i < arguments.length; i++) {
|
|
args.push(arguments[i]);
|
|
}
|
|
args.push(function (err, value) {
|
|
if (err) {
|
|
promiseReject(err);
|
|
} else {
|
|
promiseResolve(value);
|
|
}
|
|
});
|
|
|
|
try {
|
|
original.apply(this, args);
|
|
} catch (err) {
|
|
promiseReject(err);
|
|
}
|
|
|
|
return promise;
|
|
}
|
|
|
|
Object.setPrototypeOf(fn, Object.getPrototypeOf(original));
|
|
|
|
if (kCustomPromisifiedSymbol) Object.defineProperty(fn, kCustomPromisifiedSymbol, {
|
|
value: fn, enumerable: false, writable: false, configurable: true
|
|
});
|
|
return Object.defineProperties(
|
|
fn,
|
|
getOwnPropertyDescriptors(original)
|
|
);
|
|
}
|
|
|
|
exports.promisify.custom = kCustomPromisifiedSymbol
|
|
|
|
function callbackifyOnRejected(reason, cb) {
|
|
// `!reason` guard inspired by bluebird (Ref: https://goo.gl/t5IS6M).
|
|
// Because `null` is a special error value in callbacks which means "no error
|
|
// occurred", we error-wrap so the callback consumer can distinguish between
|
|
// "the promise rejected with null" or "the promise fulfilled with undefined".
|
|
if (!reason) {
|
|
var newReason = new Error('Promise was rejected with a falsy value');
|
|
newReason.reason = reason;
|
|
reason = newReason;
|
|
}
|
|
return cb(reason);
|
|
}
|
|
|
|
function callbackify(original) {
|
|
if (typeof original !== 'function') {
|
|
throw new TypeError('The "original" argument must be of type Function');
|
|
}
|
|
|
|
// We DO NOT return the promise as it gives the user a false sense that
|
|
// the promise is actually somehow related to the callback's execution
|
|
// and that the callback throwing will reject the promise.
|
|
function callbackified() {
|
|
var args = [];
|
|
for (var i = 0; i < arguments.length; i++) {
|
|
args.push(arguments[i]);
|
|
}
|
|
|
|
var maybeCb = args.pop();
|
|
if (typeof maybeCb !== 'function') {
|
|
throw new TypeError('The last argument must be of type Function');
|
|
}
|
|
var self = this;
|
|
var cb = function() {
|
|
return maybeCb.apply(self, arguments);
|
|
};
|
|
// In true node style we process the callback on `nextTick` with all the
|
|
// implications (stack, `uncaughtException`, `async_hooks`)
|
|
original.apply(this, args)
|
|
.then(function(ret) { process.nextTick(cb, null, ret) },
|
|
function(rej) { process.nextTick(callbackifyOnRejected, rej, cb) });
|
|
}
|
|
|
|
Object.setPrototypeOf(callbackified, Object.getPrototypeOf(original));
|
|
Object.defineProperties(callbackified,
|
|
getOwnPropertyDescriptors(original));
|
|
return callbackified;
|
|
}
|
|
exports.callbackify = callbackify;
|