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'use strict';
const uv = process.binding('uv');
const Buffer = require('buffer').Buffer;
const internalUtil = require('internal/util');
const binding = process.binding('util');
const isError = internalUtil.isError;
var Debug;
function tryStringify(arg) {
try {
return JSON.stringify(arg);
} catch (_) {
return '[Circular]';
}
}
exports.format = function(f) {
if (typeof f !== 'string') {
const objects = new Array(arguments.length);
for (var index = 0; index < arguments.length; index++) {
objects[index] = inspect(arguments[index]);
}
return objects.join(' ');
}
var argLen = arguments.length;
if (argLen === 1) return f;
var str = '';
var a = 1;
var lastPos = 0;
for (var i = 0; i < f.length;) {
if (f.charCodeAt(i) === 37/*'%'*/ && i + 1 < f.length) {
switch (f.charCodeAt(i + 1)) {
case 100: // 'd'
if (a >= argLen)
break;
if (lastPos < i)
str += f.slice(lastPos, i);
str += Number(arguments[a++]);
lastPos = i = i + 2;
continue;
case 106: // 'j'
if (a >= argLen)
break;
if (lastPos < i)
str += f.slice(lastPos, i);
str += tryStringify(arguments[a++]);
lastPos = i = i + 2;
continue;
case 115: // 's'
if (a >= argLen)
break;
if (lastPos < i)
str += f.slice(lastPos, i);
str += String(arguments[a++]);
lastPos = i = i + 2;
continue;
case 37: // '%'
if (lastPos < i)
str += f.slice(lastPos, i);
str += '%';
lastPos = i = i + 2;
continue;
}
}
++i;
}
if (lastPos === 0)
str = f;
else if (lastPos < f.length)
str += f.slice(lastPos);
while (a < argLen) {
const x = arguments[a++];
if (x === null || (typeof x !== 'object' && typeof x !== 'symbol')) {
str += ' ' + x;
} else {
str += ' ' + inspect(x);
}
}
return str;
};
exports.deprecate = internalUtil._deprecate;
var debugs = {};
var debugEnviron;
exports.debuglog = function(set) {
if (debugEnviron === undefined)
debugEnviron = process.env.NODE_DEBUG || '';
set = set.toUpperCase();
if (!debugs[set]) {
if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) {
var pid = process.pid;
debugs[set] = function() {
var msg = exports.format.apply(exports, arguments);
console.error('%s %d: %s', set, pid, msg);
};
} else {
debugs[set] = function() {};
}
}
return debugs[set];
};
/**
* Echos the value of a value. Tries to print the value out
* in the best way possible given the different types.
*
* @param {Object} obj The object to print out.
* @param {Object} opts Optional options object that alters the output.
*/
12 years ago
/* legacy: obj, showHidden, depth, colors*/
function inspect(obj, opts) {
// default options
var ctx = {
seen: [],
stylize: stylizeNoColor
};
// legacy...
if (arguments.length >= 3) ctx.depth = arguments[2];
if (arguments.length >= 4) ctx.colors = arguments[3];
if (typeof opts === 'boolean') {
// legacy...
ctx.showHidden = opts;
} else if (opts) {
// got an "options" object
exports._extend(ctx, opts);
}
// set default options
if (ctx.showHidden === undefined) ctx.showHidden = false;
if (ctx.depth === undefined) ctx.depth = 2;
if (ctx.colors === undefined) ctx.colors = false;
if (ctx.customInspect === undefined) ctx.customInspect = true;
if (ctx.colors) ctx.stylize = stylizeWithColor;
return formatValue(ctx, obj, ctx.depth);
}
exports.inspect = inspect;
// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics
inspect.colors = {
'bold' : [1, 22],
'italic' : [3, 23],
'underline' : [4, 24],
'inverse' : [7, 27],
'white' : [37, 39],
'grey' : [90, 39],
'black' : [30, 39],
'blue' : [34, 39],
'cyan' : [36, 39],
'green' : [32, 39],
'magenta' : [35, 39],
'red' : [31, 39],
'yellow' : [33, 39]
};
// Don't use 'blue' not visible on cmd.exe
inspect.styles = {
'special': 'cyan',
'number': 'yellow',
'boolean': 'yellow',
'undefined': 'grey',
'null': 'bold',
'string': 'green',
'symbol': 'green',
'date': 'magenta',
// "name": intentionally not styling
'regexp': 'red'
};
function stylizeWithColor(str, styleType) {
var style = inspect.styles[styleType];
if (style) {
return '\u001b[' + inspect.colors[style][0] + 'm' + str +
'\u001b[' + inspect.colors[style][1] + 'm';
} else {
return str;
}
}
function stylizeNoColor(str, styleType) {
return str;
}
function arrayToHash(array) {
var hash = Object.create(null);
for (var i = 0; i < array.length; i++) {
var val = array[i];
hash[val] = true;
}
return hash;
}
function getConstructorOf(obj) {
while (obj) {
var descriptor = Object.getOwnPropertyDescriptor(obj, 'constructor');
if (descriptor !== undefined &&
typeof descriptor.value === 'function' &&
descriptor.value.name !== '') {
return descriptor.value;
}
obj = Object.getPrototypeOf(obj);
}
return null;
}
function ensureDebugIsInitialized() {
if (Debug === undefined) {
const runInDebugContext = require('vm').runInDebugContext;
Debug = runInDebugContext('Debug');
}
}
function inspectPromise(p) {
ensureDebugIsInitialized();
// Only create a mirror if the object is a Promise.
if (!binding.isPromise(p))
return null;
const mirror = Debug.MakeMirror(p, true);
return {status: mirror.status(), value: mirror.promiseValue().value_};
}
function formatValue(ctx, value, recurseTimes) {
// Provide a hook for user-specified inspect functions.
// Check that value is an object with an inspect function on it
if (ctx.customInspect &&
value &&
typeof value.inspect === 'function' &&
// Filter out the util module, it's inspect function is special
value.inspect !== exports.inspect &&
// Also filter out any prototype objects using the circular check.
!(value.constructor && value.constructor.prototype === value)) {
var ret = value.inspect(recurseTimes, ctx);
if (typeof ret !== 'string') {
ret = formatValue(ctx, ret, recurseTimes);
}
return ret;
}
// Primitive types cannot have properties
var primitive = formatPrimitive(ctx, value);
if (primitive) {
return primitive;
}
// Look up the keys of the object.
var keys = Object.keys(value);
var visibleKeys = arrayToHash(keys);
if (ctx.showHidden) {
keys = Object.getOwnPropertyNames(value);
keys = keys.concat(Object.getOwnPropertySymbols(value));
}
// This could be a boxed primitive (new String(), etc.), check valueOf()
// NOTE: Avoid calling `valueOf` on `Date` instance because it will return
// a number which, when object has some additional user-stored `keys`,
// will be printed out.
var formatted;
var raw = value;
try {
// the .valueOf() call can fail for a multitude of reasons
if (!isDate(value))
raw = value.valueOf();
} catch (e) {
// ignore...
}
if (typeof raw === 'string') {
// for boxed Strings, we have to remove the 0-n indexed entries,
// since they just noisy up the output and are redundant
keys = keys.filter(function(key) {
return !(key >= 0 && key < raw.length);
});
}
// Some type of object without properties can be shortcutted.
if (keys.length === 0) {
if (typeof value === 'function') {
var name = value.name ? ': ' + value.name : '';
return ctx.stylize('[Function' + name + ']', 'special');
}
if (isRegExp(value)) {
return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
}
if (isDate(value)) {
return ctx.stylize(Date.prototype.toISOString.call(value), 'date');
}
if (isError(value)) {
return formatError(value);
}
// now check the `raw` value to handle boxed primitives
if (typeof raw === 'string') {
formatted = formatPrimitiveNoColor(ctx, raw);
return ctx.stylize('[String: ' + formatted + ']', 'string');
}
if (typeof raw === 'number') {
formatted = formatPrimitiveNoColor(ctx, raw);
return ctx.stylize('[Number: ' + formatted + ']', 'number');
}
if (typeof raw === 'boolean') {
formatted = formatPrimitiveNoColor(ctx, raw);
return ctx.stylize('[Boolean: ' + formatted + ']', 'boolean');
}
// Fast path for ArrayBuffer. Can't do the same for DataView because it
// has a non-primitive .buffer property that we need to recurse for.
if (binding.isArrayBuffer(value)) {
return `${getConstructorOf(value).name}` +
` { byteLength: ${formatNumber(ctx, value.byteLength)} }`;
}
}
var constructor = getConstructorOf(value);
var base = '', empty = false, braces;
var formatter = formatObject;
// We can't compare constructors for various objects using a comparison like
// `constructor === Array` because the object could have come from a different
// context and thus the constructor won't match. Instead we check the
// constructor names (including those up the prototype chain where needed) to
// determine object types.
if (Array.isArray(value)) {
// Unset the constructor to prevent "Array [...]" for ordinary arrays.
if (constructor && constructor.name === 'Array')
constructor = null;
braces = ['[', ']'];
empty = value.length === 0;
formatter = formatArray;
} else if (binding.isSet(value)) {
braces = ['{', '}'];
// With `showHidden`, `length` will display as a hidden property for
// arrays. For consistency's sake, do the same for `size`, even though this
// property isn't selected by Object.getOwnPropertyNames().
if (ctx.showHidden)
keys.unshift('size');
empty = value.size === 0;
formatter = formatSet;
} else if (binding.isMap(value)) {
braces = ['{', '}'];
// Ditto.
if (ctx.showHidden)
keys.unshift('size');
empty = value.size === 0;
formatter = formatMap;
} else if (binding.isArrayBuffer(value)) {
braces = ['{', '}'];
keys.unshift('byteLength');
visibleKeys.byteLength = true;
} else if (binding.isDataView(value)) {
braces = ['{', '}'];
// .buffer goes last, it's not a primitive like the others.
keys.unshift('byteLength', 'byteOffset', 'buffer');
visibleKeys.byteLength = true;
visibleKeys.byteOffset = true;
visibleKeys.buffer = true;
} else if (binding.isTypedArray(value)) {
braces = ['[', ']'];
formatter = formatTypedArray;
if (ctx.showHidden) {
// .buffer goes last, it's not a primitive like the others.
keys.unshift('BYTES_PER_ELEMENT',
'length',
'byteLength',
'byteOffset',
'buffer');
}
} else {
var promiseInternals = inspectPromise(value);
if (promiseInternals) {
braces = ['{', '}'];
formatter = formatPromise;
} else {
if (binding.isMapIterator(value)) {
constructor = { name: 'MapIterator' };
braces = ['{', '}'];
empty = false;
formatter = formatCollectionIterator;
} else if (binding.isSetIterator(value)) {
constructor = { name: 'SetIterator' };
braces = ['{', '}'];
empty = false;
formatter = formatCollectionIterator;
} else {
// Unset the constructor to prevent "Object {...}" for ordinary objects.
if (constructor && constructor.name === 'Object')
constructor = null;
braces = ['{', '}'];
empty = true; // No other data than keys.
}
}
}
empty = empty === true && keys.length === 0;
// Make functions say that they are functions
if (typeof value === 'function') {
var n = value.name ? ': ' + value.name : '';
base = ' [Function' + n + ']';
}
// Make RegExps say that they are RegExps
if (isRegExp(value)) {
base = ' ' + RegExp.prototype.toString.call(value);
}
// Make dates with properties first say the date
if (isDate(value)) {
base = ' ' + Date.prototype.toISOString.call(value);
}
// Make error with message first say the error
if (isError(value)) {
base = ' ' + formatError(value);
}
// Make boxed primitive Strings look like such
if (typeof raw === 'string') {
formatted = formatPrimitiveNoColor(ctx, raw);
base = ' ' + '[String: ' + formatted + ']';
}
// Make boxed primitive Numbers look like such
if (typeof raw === 'number') {
formatted = formatPrimitiveNoColor(ctx, raw);
base = ' ' + '[Number: ' + formatted + ']';
}
// Make boxed primitive Booleans look like such
if (typeof raw === 'boolean') {
formatted = formatPrimitiveNoColor(ctx, raw);
base = ' ' + '[Boolean: ' + formatted + ']';
}
// Add constructor name if available
if (base === '' && constructor)
braces[0] = constructor.name + ' ' + braces[0];
if (empty === true) {
return braces[0] + base + braces[1];
}
if (recurseTimes < 0) {
if (isRegExp(value)) {
return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp');
} else {
return ctx.stylize('[Object]', 'special');
}
}
ctx.seen.push(value);
var output = formatter(ctx, value, recurseTimes, visibleKeys, keys);
ctx.seen.pop();
return reduceToSingleString(output, base, braces);
}
function formatNumber(ctx, value) {
// Format -0 as '-0'. Strict equality won't distinguish 0 from -0,
// so instead we use the fact that 1 / -0 < 0 whereas 1 / 0 > 0 .
if (value === 0 && 1 / value < 0)
return ctx.stylize('-0', 'number');
return ctx.stylize('' + value, 'number');
}
function formatPrimitive(ctx, value) {
if (value === undefined)
return ctx.stylize('undefined', 'undefined');
// For some reason typeof null is "object", so special case here.
if (value === null)
return ctx.stylize('null', 'null');
var type = typeof value;
if (type === 'string') {
var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
.replace(/'/g, "\\'")
.replace(/\\"/g, '"') + '\'';
return ctx.stylize(simple, 'string');
}
if (type === 'number')
return formatNumber(ctx, value);
if (type === 'boolean')
return ctx.stylize('' + value, 'boolean');
// es6 symbol primitive
if (type === 'symbol')
return ctx.stylize(value.toString(), 'symbol');
}
function formatPrimitiveNoColor(ctx, value) {
var stylize = ctx.stylize;
ctx.stylize = stylizeNoColor;
var str = formatPrimitive(ctx, value);
ctx.stylize = stylize;
return str;
}
function formatError(value) {
return value.stack || '[' + Error.prototype.toString.call(value) + ']';
}
function formatObject(ctx, value, recurseTimes, visibleKeys, keys) {
return keys.map(function(key) {
return formatProperty(ctx, value, recurseTimes, visibleKeys, key, false);
});
}
function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
var output = [];
for (var i = 0, l = value.length; i < l; ++i) {
if (hasOwnProperty(value, String(i))) {
output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
String(i), true));
} else {
output.push('');
}
}
keys.forEach(function(key) {
if (typeof key === 'symbol' || !key.match(/^\d+$/)) {
output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
key, true));
}
});
return output;
}
function formatTypedArray(ctx, value, recurseTimes, visibleKeys, keys) {
var output = new Array(value.length);
for (var i = 0, l = value.length; i < l; ++i)
output[i] = formatNumber(ctx, value[i]);
for (const key of keys) {
if (typeof key === 'symbol' || !key.match(/^\d+$/)) {
output.push(
formatProperty(ctx, value, recurseTimes, visibleKeys, key, true));
}
}
return output;
}
function formatSet(ctx, value, recurseTimes, visibleKeys, keys) {
var output = [];
value.forEach(function(v) {
var nextRecurseTimes = recurseTimes === null ? null : recurseTimes - 1;
var str = formatValue(ctx, v, nextRecurseTimes);
output.push(str);
});
keys.forEach(function(key) {
output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
key, false));
});
return output;
}
function formatMap(ctx, value, recurseTimes, visibleKeys, keys) {
var output = [];
value.forEach(function(v, k) {
var nextRecurseTimes = recurseTimes === null ? null : recurseTimes - 1;
var str = formatValue(ctx, k, nextRecurseTimes);
str += ' => ';
str += formatValue(ctx, v, nextRecurseTimes);
output.push(str);
});
keys.forEach(function(key) {
output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
key, false));
});
return output;
}
function formatCollectionIterator(ctx, value, recurseTimes, visibleKeys, keys) {
ensureDebugIsInitialized();
const mirror = Debug.MakeMirror(value, true);
var nextRecurseTimes = recurseTimes === null ? null : recurseTimes - 1;
var vals = mirror.preview();
var output = [];
for (const o of vals) {
output.push(formatValue(ctx, o, nextRecurseTimes));
}
return output;
}
function formatPromise(ctx, value, recurseTimes, visibleKeys, keys) {
var output = [];
var internals = inspectPromise(value);
if (internals.status === 'pending') {
output.push('<pending>');
} else {
var nextRecurseTimes = recurseTimes === null ? null : recurseTimes - 1;
var str = formatValue(ctx, internals.value, nextRecurseTimes);
if (internals.status === 'rejected') {
output.push('<rejected> ' + str);
} else {
output.push(str);
}
}
keys.forEach(function(key) {
output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
key, false));
});
return output;
}
function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) {
var name, str, desc;
desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] };
if (desc.get) {
if (desc.set) {
str = ctx.stylize('[Getter/Setter]', 'special');
} else {
str = ctx.stylize('[Getter]', 'special');
}
} else {
if (desc.set) {
str = ctx.stylize('[Setter]', 'special');
}
}
if (!hasOwnProperty(visibleKeys, key)) {
if (typeof key === 'symbol') {
name = '[' + ctx.stylize(key.toString(), 'symbol') + ']';
} else {
name = '[' + key + ']';
}
}
if (!str) {
if (ctx.seen.indexOf(desc.value) < 0) {
if (recurseTimes === null) {
str = formatValue(ctx, desc.value, null);
} else {
str = formatValue(ctx, desc.value, recurseTimes - 1);
}
if (str.indexOf('\n') > -1) {
if (array) {
str = str.replace(/\n/g, '\n ');
} else {
str = str.replace(/(^|\n)/g, '\n ');
}
}
} else {
str = ctx.stylize('[Circular]', 'special');
}
}
if (name === undefined) {
if (array && key.match(/^\d+$/)) {
return str;
}
name = JSON.stringify('' + key);
if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) {
name = name.substr(1, name.length - 2);
name = ctx.stylize(name, 'name');
} else {
name = name.replace(/'/g, "\\'")
.replace(/\\"/g, '"')
.replace(/(^"|"$)/g, "'")
.replace(/\\\\/g, '\\');
name = ctx.stylize(name, 'string');
}
}
return name + ': ' + str;
}
function reduceToSingleString(output, base, braces) {
var length = output.reduce(function(prev, cur) {
return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
}, 0);
if (length > 60) {
return braces[0] +
// If the opening "brace" is too large, like in the case of "Set {",
// we need to force the first item to be on the next line or the
// items will not line up correctly.
(base === '' && braces[0].length === 1 ? '' : base + '\n ') +
' ' +
output.join(',\n ') +
' ' +
braces[1];
}
return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1];
}
// NOTE: These type checking functions intentionally don't use `instanceof`
// because it is fragile and can be easily faked with `Object.create()`.
exports.isArray = Array.isArray;
function isBoolean(arg) {
return typeof arg === 'boolean';
}
exports.isBoolean = isBoolean;
function isNull(arg) {
return arg === null;
}
exports.isNull = isNull;
function isNullOrUndefined(arg) {
return arg === null || arg === undefined;
}
exports.isNullOrUndefined = isNullOrUndefined;
function isNumber(arg) {
return typeof arg === 'number';
}
exports.isNumber = isNumber;
function isString(arg) {
return typeof arg === 'string';
}
exports.isString = isString;
function isSymbol(arg) {
return typeof arg === 'symbol';
}
exports.isSymbol = isSymbol;
function isUndefined(arg) {
return arg === undefined;
}
exports.isUndefined = isUndefined;
14 years ago
function isRegExp(re) {
return binding.isRegExp(re);
}
exports.isRegExp = isRegExp;
function isObject(arg) {
return arg !== null && typeof arg === 'object';
}
exports.isObject = isObject;
14 years ago
function isDate(d) {
return binding.isDate(d);
}
exports.isDate = isDate;
exports.isError = isError;
function isFunction(arg) {
return typeof arg === 'function';
}
exports.isFunction = isFunction;
function isPrimitive(arg) {
return arg === null ||
typeof arg !== 'object' && typeof arg !== 'function';
}
exports.isPrimitive = isPrimitive;
exports.isBuffer = Buffer.isBuffer;
14 years ago
function pad(n) {
return n < 10 ? '0' + n.toString(10) : n.toString(10);
}
const months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
'Oct', 'Nov', 'Dec'];
// 26 Feb 16:19:34
14 years ago
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
14 years ago
* prototype.
* @param {function} superCtor Constructor function to inherit prototype from.
* @throws {TypeError} Will error if either constructor is null, or if
* the super constructor lacks a prototype.
*/
14 years ago
exports.inherits = function(ctor, superCtor) {
if (ctor === undefined || ctor === null)
throw new TypeError('The constructor to "inherits" must not be ' +
'null or undefined');
if (superCtor === undefined || superCtor === null)
throw new TypeError('The super constructor to "inherits" must not ' +
'be null or undefined');
if (superCtor.prototype === undefined)
throw new TypeError('The super constructor to "inherits" must ' +
'have a prototype');
ctor.super_ = superCtor;
Object.setPrototypeOf(ctor.prototype, superCtor.prototype);
};
exports._extend = function(origin, add) {
// Don't do anything if add isn't an object
if (add === null || typeof add !== 'object') 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);
}
// Deprecated old stuff.
exports.print = internalUtil.deprecate(function() {
for (var i = 0, len = arguments.length; i < len; ++i) {
process.stdout.write(String(arguments[i]));
}
}, 'util.print is deprecated. Use console.log instead.');
exports.puts = internalUtil.deprecate(function() {
for (var i = 0, len = arguments.length; i < len; ++i) {
process.stdout.write(arguments[i] + '\n');
}
}, 'util.puts is deprecated. Use console.log instead.');
exports.debug = internalUtil.deprecate(function(x) {
process.stderr.write('DEBUG: ' + x + '\n');
}, 'util.debug is deprecated. Use console.error instead.');
exports.error = internalUtil.deprecate(function(x) {
for (var i = 0, len = arguments.length; i < len; ++i) {
process.stderr.write(arguments[i] + '\n');
}
}, 'util.error is deprecated. Use console.error instead.');
exports._errnoException = function(err, syscall, original) {
var errname = uv.errname(err);
var message = syscall + ' ' + errname;
if (original)
message += ' ' + original;
var e = new Error(message);
e.code = errname;
e.errno = errname;
e.syscall = syscall;
return e;
};
exports._exceptionWithHostPort = function(err,
syscall,
address,
port,
additional) {
var details;
if (port && port > 0) {
details = address + ':' + port;
} else {
details = address;
}
if (additional) {
details += ' - Local (' + additional + ')';
}
var ex = exports._errnoException(err, syscall, details);
ex.address = address;
if (port) {
ex.port = port;
}
return ex;
};