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keksAccountGUI/node_modulesOLD/object-hash/dist/object_hash_test.js

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Update Framework
2019-08-11 18:48:02 +00:00
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(function (global){
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},{}],2:[function(require,module,exports){
// http://wiki.commonjs.org/wiki/Unit_Testing/1.0
//
// THIS IS NOT TESTED NOR LIKELY TO WORK OUTSIDE V8!
//
// Originally from narwhal.js (http://narwhaljs.org)
// Copyright (c) 2009 Thomas Robinson <280north.com>
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the 'Software'), to
// deal in the Software without restriction, including without limitation the
// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
// sell copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
// when used in node, this will actually load the util module we depend on
// versus loading the builtin util module as happens otherwise
// this is a bug in node module loading as far as I am concerned
var util = require('util/');
var pSlice = Array.prototype.slice;
var hasOwn = Object.prototype.hasOwnProperty;
// 1. The assert module provides functions that throw
// AssertionError's when particular conditions are not met. The
// assert module must conform to the following interface.
var assert = module.exports = ok;
// 2. The AssertionError is defined in assert.
// new assert.AssertionError({ message: message,
// actual: actual,
// expected: expected })
assert.AssertionError = function AssertionError(options) {
this.name = 'AssertionError';
this.actual = options.actual;
this.expected = options.expected;
this.operator = options.operator;
if (options.message) {
this.message = options.message;
this.generatedMessage = false;
} else {
this.message = getMessage(this);
this.generatedMessage = true;
}
var stackStartFunction = options.stackStartFunction || fail;
if (Error.captureStackTrace) {
Error.captureStackTrace(this, stackStartFunction);
}
else {
// non v8 browsers so we can have a stacktrace
var err = new Error();
if (err.stack) {
var out = err.stack;
// try to strip useless frames
var fn_name = stackStartFunction.name;
var idx = out.indexOf('\n' + fn_name);
if (idx >= 0) {
// once we have located the function frame
// we need to strip out everything before it (and its line)
var next_line = out.indexOf('\n', idx + 1);
out = out.substring(next_line + 1);
}
this.stack = out;
}
}
};
// assert.AssertionError instanceof Error
util.inherits(assert.AssertionError, Error);
function replacer(key, value) {
if (util.isUndefined(value)) {
return '' + value;
}
if (util.isNumber(value) && (isNaN(value) || !isFinite(value))) {
return value.toString();
}
if (util.isFunction(value) || util.isRegExp(value)) {
return value.toString();
}
return value;
}
function truncate(s, n) {
if (util.isString(s)) {
return s.length < n ? s : s.slice(0, n);
} else {
return s;
}
}
function getMessage(self) {
return truncate(JSON.stringify(self.actual, replacer), 128) + ' ' +
self.operator + ' ' +
truncate(JSON.stringify(self.expected, replacer), 128);
}
// At present only the three keys mentioned above are used and
// understood by the spec. Implementations or sub modules can pass
// other keys to the AssertionError's constructor - they will be
// ignored.
// 3. All of the following functions must throw an AssertionError
// when a corresponding condition is not met, with a message that
// may be undefined if not provided. All assertion methods provide
// both the actual and expected values to the assertion error for
// display purposes.
function fail(actual, expected, message, operator, stackStartFunction) {
throw new assert.AssertionError({
message: message,
actual: actual,
expected: expected,
operator: operator,
stackStartFunction: stackStartFunction
});
}
// EXTENSION! allows for well behaved errors defined elsewhere.
assert.fail = fail;
// 4. Pure assertion tests whether a value is truthy, as determined
// by !!guard.
// assert.ok(guard, message_opt);
// This statement is equivalent to assert.equal(true, !!guard,
// message_opt);. To test strictly for the value true, use
// assert.strictEqual(true, guard, message_opt);.
function ok(value, message) {
if (!value) fail(value, true, message, '==', assert.ok);
}
assert.ok = ok;
// 5. The equality assertion tests shallow, coercive equality with
// ==.
// assert.equal(actual, expected, message_opt);
assert.equal = function equal(actual, expected, message) {
if (actual != expected) fail(actual, expected, message, '==', assert.equal);
};
// 6. The non-equality assertion tests for whether two objects are not equal
// with != assert.notEqual(actual, expected, message_opt);
assert.notEqual = function notEqual(actual, expected, message) {
if (actual == expected) {
fail(actual, expected, message, '!=', assert.notEqual);
}
};
// 7. The equivalence assertion tests a deep equality relation.
// assert.deepEqual(actual, expected, message_opt);
assert.deepEqual = function deepEqual(actual, expected, message) {
if (!_deepEqual(actual, expected)) {
fail(actual, expected, message, 'deepEqual', assert.deepEqual);
}
};
function _deepEqual(actual, expected) {
// 7.1. All identical values are equivalent, as determined by ===.
if (actual === expected) {
return true;
} else if (util.isBuffer(actual) && util.isBuffer(expected)) {
if (actual.length != expected.length) return false;
for (var i = 0; i < actual.length; i++) {
if (actual[i] !== expected[i]) return false;
}
return true;
// 7.2. If the expected value is a Date object, the actual value is
// equivalent if it is also a Date object that refers to the same time.
} else if (util.isDate(actual) && util.isDate(expected)) {
return actual.getTime() === expected.getTime();
// 7.3 If the expected value is a RegExp object, the actual value is
// equivalent if it is also a RegExp object with the same source and
// properties (`global`, `multiline`, `lastIndex`, `ignoreCase`).
} else if (util.isRegExp(actual) && util.isRegExp(expected)) {
return actual.source === expected.source &&
actual.global === expected.global &&
actual.multiline === expected.multiline &&
actual.lastIndex === expected.lastIndex &&
actual.ignoreCase === expected.ignoreCase;
// 7.4. Other pairs that do not both pass typeof value == 'object',
// equivalence is determined by ==.
} else if (!util.isObject(actual) && !util.isObject(expected)) {
return actual == expected;
// 7.5 For all other Object pairs, including Array objects, equivalence is
// determined by having the same number of owned properties (as verified
// with Object.prototype.hasOwnProperty.call), the same set of keys
// (although not necessarily the same order), equivalent values for every
// corresponding key, and an identical 'prototype' property. Note: this
// accounts for both named and indexed properties on Arrays.
} else {
return objEquiv(actual, expected);
}
}
function isArguments(object) {
return Object.prototype.toString.call(object) == '[object Arguments]';
}
function objEquiv(a, b) {
if (util.isNullOrUndefined(a) || util.isNullOrUndefined(b))
return false;
// an identical 'prototype' property.
if (a.prototype !== b.prototype) return false;
//~~~I've managed to break Object.keys through screwy arguments passing.
// Converting to array solves the problem.
if (isArguments(a)) {
if (!isArguments(b)) {
return false;
}
a = pSlice.call(a);
b = pSlice.call(b);
return _deepEqual(a, b);
}
try {
var ka = objectKeys(a),
kb = objectKeys(b),
key, i;
} catch (e) {//happens when one is a string literal and the other isn't
return false;
}
// having the same number of owned properties (keys incorporates
// hasOwnProperty)
if (ka.length != kb.length)
return false;
//the same set of keys (although not necessarily the same order),
ka.sort();
kb.sort();
//~~~cheap key test
for (i = ka.length - 1; i >= 0; i--) {
if (ka[i] != kb[i])
return false;
}
//equivalent values for every corresponding key, and
//~~~possibly expensive deep test
for (i = ka.length - 1; i >= 0; i--) {
key = ka[i];
if (!_deepEqual(a[key], b[key])) return false;
}
return true;
}
// 8. The non-equivalence assertion tests for any deep inequality.
// assert.notDeepEqual(actual, expected, message_opt);
assert.notDeepEqual = function notDeepEqual(actual, expected, message) {
if (_deepEqual(actual, expected)) {
fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual);
}
};
// 9. The strict equality assertion tests strict equality, as determined by ===.
// assert.strictEqual(actual, expected, message_opt);
assert.strictEqual = function strictEqual(actual, expected, message) {
if (actual !== expected) {
fail(actual, expected, message, '===', assert.strictEqual);
}
};
// 10. The strict non-equality assertion tests for strict inequality, as
// determined by !==. assert.notStrictEqual(actual, expected, message_opt);
assert.notStrictEqual = function notStrictEqual(actual, expected, message) {
if (actual === expected) {
fail(actual, expected, message, '!==', assert.notStrictEqual);
}
};
function expectedException(actual, expected) {
if (!actual || !expected) {
return false;
}
if (Object.prototype.toString.call(expected) == '[object RegExp]') {
return expected.test(actual);
} else if (actual instanceof expected) {
return true;
} else if (expected.call({}, actual) === true) {
return true;
}
return false;
}
function _throws(shouldThrow, block, expected, message) {
var actual;
if (util.isString(expected)) {
message = expected;
expected = null;
}
try {
block();
} catch (e) {
actual = e;
}
message = (expected && expected.name ? ' (' + expected.name + ').' : '.') +
(message ? ' ' + message : '.');
if (shouldThrow && !actual) {
fail(actual, expected, 'Missing expected exception' + message);
}
if (!shouldThrow && expectedException(actual, expected)) {
fail(actual, expected, 'Got unwanted exception' + message);
}
if ((shouldThrow && actual && expected &&
!expectedException(actual, expected)) || (!shouldThrow && actual)) {
throw actual;
}
}
// 11. Expected to throw an error:
// assert.throws(block, Error_opt, message_opt);
assert.throws = function(block, /*optional*/error, /*optional*/message) {
_throws.apply(this, [true].concat(pSlice.call(arguments)));
};
// EXTENSION! This is annoying to write outside this module.
assert.doesNotThrow = function(block, /*optional*/message) {
_throws.apply(this, [false].concat(pSlice.call(arguments)));
};
assert.ifError = function(err) { if (err) {throw err;}};
var objectKeys = Object.keys || function (obj) {
var keys = [];
for (var key in obj) {
if (hasOwn.call(obj, key)) keys.push(key);
}
return keys;
};
},{"util/":5}],3:[function(require,module,exports){
if (typeof Object.create === 'function') {
// implementation from standard node.js 'util' module
module.exports = function inherits(ctor, superCtor) {
ctor.super_ = superCtor
ctor.prototype = Object.create(superCtor.prototype, {
constructor: {
value: ctor,
enumerable: false,
writable: true,
configurable: true
}
});
};
} else {
// old school shim for old browsers
module.exports = function inherits(ctor, superCtor) {
ctor.super_ = superCtor
var TempCtor = function () {}
TempCtor.prototype = superCtor.prototype
ctor.prototype = new TempCtor()
ctor.prototype.constructor = ctor
}
}
},{}],4:[function(require,module,exports){
module.exports = function isBuffer(arg) {
return arg && typeof arg === 'object'
&& typeof arg.copy === 'function'
&& typeof arg.fill === 'function'
&& typeof arg.readUInt8 === 'function';
}
},{}],5:[function(require,module,exports){
(function (process,global){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
var formatRegExp = /%[sdj%]/g;
exports.format = function(f) {
if (!isString(f)) {
var objects = [];
for (var i = 0; i < arguments.length; i++) {
objects.push(inspect(arguments[i]));
}
return objects.join(' ');
}
var i = 1;
var args = arguments;
var len = args.length;
var str = String(f).replace(formatRegExp, function(x) {
if (x === '%%') return '%';
if (i >= len) return x;
switch (x) {
case '%s': return String(args[i++]);
case '%d': return Number(args[i++]);
case '%j':
try {
return JSON.stringify(args[i++]);
} catch (_) {
return '[Circular]';
}
default:
return x;
}
});
for (var x = args[i]; i < len; x = args[++i]) {
if (isNull(x) || !isObject(x)) {
str += ' ' + x;
} else {
str += ' ' + inspect(x);
}
}
return str;
};
// Mark that a method should not be used.
// Returns a modified function which warns once by default.
// If --no-deprecation is set, then it is a no-op.
exports.deprecate = function(fn, msg) {
// Allow for deprecating things in the process of starting up.
if (isUndefined(global.process)) {
return function() {
return exports.deprecate(fn, msg).apply(this, arguments);
};
}
if (process.noDeprecation === true) {
return fn;
}
var warned = false;
function deprecated() {
if (!warned) {
if (process.throwDeprecation) {
throw new Error(msg);
} else if (process.traceDeprecation) {
console.trace(msg);
} else {
console.error(msg);
}
warned = true;
}
return fn.apply(this, arguments);
}
return deprecated;
};
var debugs = {};
var debugEnviron;
exports.debuglog = function(set) {
if (isUndefined(debugEnviron))
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. Trys 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.
*/
/* 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 (isBoolean(opts)) {
// legacy...
ctx.showHidden = opts;
} else if (opts) {
// got an "options" object
exports._extend(ctx, opts);
}
// set default options
if (isUndefined(ctx.showHidden)) ctx.showHidden = false;
if (isUndefined(ctx.depth)) ctx.depth = 2;
if (isUndefined(ctx.colors)) ctx.colors = false;
if (isUndefined(ctx.customInspect)) 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',
'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 = {};
array.forEach(function(val, idx) {
hash[val] = true;
});
return hash;
}
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 &&
isFunction(value.inspect) &&
// 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 (!isString(ret)) {
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);
}
// IE doesn't make error fields non-enumerable
// http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx
if (isError(value)
&& (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) {
return formatError(value);
}
// Some type of object without properties can be shortcutted.
if (keys.length === 0) {
if (isFunction(value)) {
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.toString.call(value), 'date');
}
if (isError(value)) {
return formatError(value);
}
}
var base = '', array = false, braces = ['{', '}'];
// Make Array say that they are Array
if (isArray(value)) {
array = true;
braces = ['[', ']'];
}
// Make functions say that they are functions
if (isFunction(value)) {
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.toUTCString.call(value);
}
// Make error with message first say the error
if (isError(value)) {
base = ' ' + formatError(value);
}
if (keys.length === 0 && (!array || value.length == 0)) {
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;
if (array) {
output = formatArray(ctx, value, recurseTimes, visibleKeys, keys);
} else {
output = keys.map(function(key) {
return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array);
});
}
ctx.seen.pop();
return reduceToSingleString(output, base, braces);
}
function formatPrimitive(ctx, value) {
if (isUndefined(value))
return ctx.stylize('undefined', 'undefined');
if (isString(value)) {
var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '')
.replace(/'/g, "\\'")
.replace(/\\"/g, '"') + '\'';
return ctx.stylize(simple, 'string');
}
if (isNumber(value))
return ctx.stylize('' + value, 'number');
if (isBoolean(value))
return ctx.stylize('' + value, 'boolean');
// For some reason typeof null is "object", so special case here.
if (isNull(value))
return ctx.stylize('null', 'null');
}
function formatError(value) {
return '[' + Error.prototype.toString.call(value) + ']';
}
function formatArray(ctx, value, recurseTimes, visibleKeys, keys) {
var output = [];
for (var i = 0, l = value.length; i < l; ++i) {
if (hasOwnProperty(value, String(i))) {
output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
String(i), true));
} else {
output.push('');
}
}
keys.forEach(function(key) {
if (!key.match(/^\d+$/)) {
output.push(formatProperty(ctx, value, recurseTimes, visibleKeys,
key, true));
}
});
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)) {
name = '[' + key + ']';
}
if (!str) {
if (ctx.seen.indexOf(desc.value) < 0) {
if (isNull(recurseTimes)) {
str = formatValue(ctx, desc.value, null);
} else {
str = formatValue(ctx, desc.value, recurseTimes - 1);
}
if (str.indexOf('\n') > -1) {
if (array) {
str = str.split('\n').map(function(line) {
return ' ' + line;
}).join('\n').substr(2);
} else {
str = '\n' + str.split('\n').map(function(line) {
return ' ' + line;
}).join('\n');
}
}
} else {
str = ctx.stylize('[Circular]', 'special');
}
}
if (isUndefined(name)) {
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, "'");
name = ctx.stylize(name, 'string');
}
}
return name + ': ' + str;
}
function reduceToSingleString(output, base, braces) {
var numLinesEst = 0;
var length = output.reduce(function(prev, cur) {
numLinesEst++;
if (cur.indexOf('\n') >= 0) numLinesEst++;
return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1;
}, 0);
if (length > 60) {
return braces[0] +
(base === '' ? '' : 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()`.
function isArray(ar) {
return Array.isArray(ar);
}
exports.isArray = 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;
}
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 === void 0;
}
exports.isUndefined = isUndefined;
function isRegExp(re) {
return isObject(re) && objectToString(re) === '[object RegExp]';
}
exports.isRegExp = isRegExp;
function isObject(arg) {
return typeof arg === 'object' && arg !== null;
}
exports.isObject = isObject;
function isDate(d) {
return isObject(d) && objectToString(d) === '[object Date]';
}
exports.isDate = isDate;
function isError(e) {
return isObject(e) &&
(objectToString(e) === '[object Error]' || e instanceof Error);
}
exports.isError = isError;
function isFunction(arg) {
return typeof arg === 'function';
}
exports.isFunction = isFunction;
function isPrimitive(arg) {
return arg === null ||
typeof arg === 'boolean' ||
typeof arg === 'number' ||
typeof arg === 'string' ||
typeof arg === 'symbol' || // ES6 symbol
typeof arg === 'undefined';
}
exports.isPrimitive = isPrimitive;
exports.isBuffer = require('./support/isBuffer');
function objectToString(o) {
return Object.prototype.toString.call(o);
}
function pad(n) {
return n < 10 ? '0' + n.toString(10) : n.toString(10);
}
var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep',
'Oct', 'Nov', 'Dec'];
// 26 Feb 16:19:34
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);
}
}).call(this,require("7YKIPe"),typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
},{"./support/isBuffer":4,"7YKIPe":9,"inherits":3}],6:[function(require,module,exports){
var lookup = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
;(function (exports) {
'use strict';
var Arr = (typeof Uint8Array !== 'undefined')
? Uint8Array
: Array
var PLUS = '+'.charCodeAt(0)
var SLASH = '/'.charCodeAt(0)
var NUMBER = '0'.charCodeAt(0)
var LOWER = 'a'.charCodeAt(0)
var UPPER = 'A'.charCodeAt(0)
var PLUS_URL_SAFE = '-'.charCodeAt(0)
var SLASH_URL_SAFE = '_'.charCodeAt(0)
function decode (elt) {
var code = elt.charCodeAt(0)
if (code === PLUS ||
code === PLUS_URL_SAFE)
return 62 // '+'
if (code === SLASH ||
code === SLASH_URL_SAFE)
return 63 // '/'
if (code < NUMBER)
return -1 //no match
if (code < NUMBER + 10)
return code - NUMBER + 26 + 26
if (code < UPPER + 26)
return code - UPPER
if (code < LOWER + 26)
return code - LOWER + 26
}
function b64ToByteArray (b64) {
var i, j, l, tmp, placeHolders, arr
if (b64.length % 4 > 0) {
throw new Error('Invalid string. Length must be a multiple of 4')
}
// the number of equal signs (place holders)
// if there are two placeholders, than the two characters before it
// represent one byte
// if there is only one, then the three characters before it represent 2 bytes
// this is just a cheap hack to not do indexOf twice
var len = b64.length
placeHolders = '=' === b64.charAt(len - 2) ? 2 : '=' === b64.charAt(len - 1) ? 1 : 0
// base64 is 4/3 + up to two characters of the original data
arr = new Arr(b64.length * 3 / 4 - placeHolders)
// if there are placeholders, only get up to the last complete 4 chars
l = placeHolders > 0 ? b64.length - 4 : b64.length
var L = 0
function push (v) {
arr[L++] = v
}
for (i = 0, j = 0; i < l; i += 4, j += 3) {
tmp = (decode(b64.charAt(i)) << 18) | (decode(b64.charAt(i + 1)) << 12) | (decode(b64.charAt(i + 2)) << 6) | decode(b64.charAt(i + 3))
push((tmp & 0xFF0000) >> 16)
push((tmp & 0xFF00) >> 8)
push(tmp & 0xFF)
}
if (placeHolders === 2) {
tmp = (decode(b64.charAt(i)) << 2) | (decode(b64.charAt(i + 1)) >> 4)
push(tmp & 0xFF)
} else if (placeHolders === 1) {
tmp = (decode(b64.charAt(i)) << 10) | (decode(b64.charAt(i + 1)) << 4) | (decode(b64.charAt(i + 2)) >> 2)
push((tmp >> 8) & 0xFF)
push(tmp & 0xFF)
}
return arr
}
function uint8ToBase64 (uint8) {
var i,
extraBytes = uint8.length % 3, // if we have 1 byte left, pad 2 bytes
output = "",
temp, length
function encode (num) {
return lookup.charAt(num)
}
function tripletToBase64 (num) {
return encode(num >> 18 & 0x3F) + encode(num >> 12 & 0x3F) + encode(num >> 6 & 0x3F) + encode(num & 0x3F)
}
// go through the array every three bytes, we'll deal with trailing stuff later
for (i = 0, length = uint8.length - extraBytes; i < length; i += 3) {
temp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
output += tripletToBase64(temp)
}
// pad the end with zeros, but make sure to not forget the extra bytes
switch (extraBytes) {
case 1:
temp = uint8[uint8.length - 1]
output += encode(temp >> 2)
output += encode((temp << 4) & 0x3F)
output += '=='
break
case 2:
temp = (uint8[uint8.length - 2] << 8) + (uint8[uint8.length - 1])
output += encode(temp >> 10)
output += encode((temp >> 4) & 0x3F)
output += encode((temp << 2) & 0x3F)
output += '='
break
}
return output
}
exports.toByteArray = b64ToByteArray
exports.fromByteArray = uint8ToBase64
}(typeof exports === 'undefined' ? (this.base64js = {}) : exports))
},{}],7:[function(require,module,exports){
/*!
* The buffer module from node.js, for the browser.
*
* @author Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
* @license MIT
*/
var base64 = require('base64-js')
var ieee754 = require('ieee754')
exports.Buffer = Buffer
exports.SlowBuffer = Buffer
exports.INSPECT_MAX_BYTES = 50
Buffer.poolSize = 8192
/**
* If `Buffer._useTypedArrays`:
* === true Use Uint8Array implementation (fastest)
* === false Use Object implementation (compatible down to IE6)
*/
Buffer._useTypedArrays = (function () {
// Detect if browser supports Typed Arrays. Supported browsers are IE 10+, Firefox 4+,
// Chrome 7+, Safari 5.1+, Opera 11.6+, iOS 4.2+. If the browser does not support adding
// properties to `Uint8Array` instances, then that's the same as no `Uint8Array` support
// because we need to be able to add all the node Buffer API methods. This is an issue
// in Firefox 4-29. Now fixed: https://bugzilla.mozilla.org/show_bug.cgi?id=695438
try {
var buf = new ArrayBuffer(0)
var arr = new Uint8Array(buf)
arr.foo = function () { return 42 }
return 42 === arr.foo() &&
typeof arr.subarray === 'function' // Chrome 9-10 lack `subarray`
} catch (e) {
return false
}
})()
/**
* Class: Buffer
* =============
*
* The Buffer constructor returns instances of `Uint8Array` that are augmented
* with function properties for all the node `Buffer` API functions. We use
* `Uint8Array` so that square bracket notation works as expected -- it returns
* a single octet.
*
* By augmenting the instances, we can avoid modifying the `Uint8Array`
* prototype.
*/
function Buffer (subject, encoding, noZero) {
if (!(this instanceof Buffer))
return new Buffer(subject, encoding, noZero)
var type = typeof subject
// Workaround: node's base64 implementation allows for non-padded strings
// while base64-js does not.
if (encoding === 'base64' && type === 'string') {
subject = stringtrim(subject)
while (subject.length % 4 !== 0) {
subject = subject + '='
}
}
// Find the length
var length
if (type === 'number')
length = coerce(subject)
else if (type === 'string')
length = Buffer.byteLength(subject, encoding)
else if (type === 'object')
length = coerce(subject.length) // assume that object is array-like
else
throw new Error('First argument needs to be a number, array or string.')
var buf
if (Buffer._useTypedArrays) {
// Preferred: Return an augmented `Uint8Array` instance for best performance
buf = Buffer._augment(new Uint8Array(length))
} else {
// Fallback: Return THIS instance of Buffer (created by `new`)
buf = this
buf.length = length
buf._isBuffer = true
}
var i
if (Buffer._useTypedArrays && typeof subject.byteLength === 'number') {
// Speed optimization -- use set if we're copying from a typed array
buf._set(subject)
} else if (isArrayish(subject)) {
// Treat array-ish objects as a byte array
for (i = 0; i < length; i++) {
if (Buffer.isBuffer(subject))
buf[i] = subject.readUInt8(i)
else
buf[i] = subject[i]
}
} else if (type === 'string') {
buf.write(subject, 0, encoding)
} else if (type === 'number' && !Buffer._useTypedArrays && !noZero) {
for (i = 0; i < length; i++) {
buf[i] = 0
}
}
return buf
}
// STATIC METHODS
// ==============
Buffer.isEncoding = function (encoding) {
switch (String(encoding).toLowerCase()) {
case 'hex':
case 'utf8':
case 'utf-8':
case 'ascii':
case 'binary':
case 'base64':
case 'raw':
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return true
default:
return false
}
}
Buffer.isBuffer = function (b) {
return !!(b !== null && b !== undefined && b._isBuffer)
}
Buffer.byteLength = function (str, encoding) {
var ret
str = str + ''
switch (encoding || 'utf8') {
case 'hex':
ret = str.length / 2
break
case 'utf8':
case 'utf-8':
ret = utf8ToBytes(str).length
break
case 'ascii':
case 'binary':
case 'raw':
ret = str.length
break
case 'base64':
ret = base64ToBytes(str).length
break
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
ret = str.length * 2
break
default:
throw new Error('Unknown encoding')
}
return ret
}
Buffer.concat = function (list, totalLength) {
assert(isArray(list), 'Usage: Buffer.concat(list, [totalLength])\n' +
'list should be an Array.')
if (list.length === 0) {
return new Buffer(0)
} else if (list.length === 1) {
return list[0]
}
var i
if (typeof totalLength !== 'number') {
totalLength = 0
for (i = 0; i < list.length; i++) {
totalLength += list[i].length
}
}
var buf = new Buffer(totalLength)
var pos = 0
for (i = 0; i < list.length; i++) {
var item = list[i]
item.copy(buf, pos)
pos += item.length
}
return buf
}
// BUFFER INSTANCE METHODS
// =======================
function _hexWrite (buf, string, offset, length) {
offset = Number(offset) || 0
var remaining = buf.length - offset
if (!length) {
length = remaining
} else {
length = Number(length)
if (length > remaining) {
length = remaining
}
}
// must be an even number of digits
var strLen = string.length
assert(strLen % 2 === 0, 'Invalid hex string')
if (length > strLen / 2) {
length = strLen / 2
}
for (var i = 0; i < length; i++) {
var byte = parseInt(string.substr(i * 2, 2), 16)
assert(!isNaN(byte), 'Invalid hex string')
buf[offset + i] = byte
}
Buffer._charsWritten = i * 2
return i
}
function _utf8Write (buf, string, offset, length) {
var charsWritten = Buffer._charsWritten =
blitBuffer(utf8ToBytes(string), buf, offset, length)
return charsWritten
}
function _asciiWrite (buf, string, offset, length) {
var charsWritten = Buffer._charsWritten =
blitBuffer(asciiToBytes(string), buf, offset, length)
return charsWritten
}
function _binaryWrite (buf, string, offset, length) {
return _asciiWrite(buf, string, offset, length)
}
function _base64Write (buf, string, offset, length) {
var charsWritten = Buffer._charsWritten =
blitBuffer(base64ToBytes(string), buf, offset, length)
return charsWritten
}
function _utf16leWrite (buf, string, offset, length) {
var charsWritten = Buffer._charsWritten =
blitBuffer(utf16leToBytes(string), buf, offset, length)
return charsWritten
}
Buffer.prototype.write = function (string, offset, length, encoding) {
// Support both (string, offset, length, encoding)
// and the legacy (string, encoding, offset, length)
if (isFinite(offset)) {
if (!isFinite(length)) {
encoding = length
length = undefined
}
} else { // legacy
var swap = encoding
encoding = offset
offset = length
length = swap
}
offset = Number(offset) || 0
var remaining = this.length - offset
if (!length) {
length = remaining
} else {
length = Number(length)
if (length > remaining) {
length = remaining
}
}
encoding = String(encoding || 'utf8').toLowerCase()
var ret
switch (encoding) {
case 'hex':
ret = _hexWrite(this, string, offset, length)
break
case 'utf8':
case 'utf-8':
ret = _utf8Write(this, string, offset, length)
break
case 'ascii':
ret = _asciiWrite(this, string, offset, length)
break
case 'binary':
ret = _binaryWrite(this, string, offset, length)
break
case 'base64':
ret = _base64Write(this, string, offset, length)
break
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
ret = _utf16leWrite(this, string, offset, length)
break
default:
throw new Error('Unknown encoding')
}
return ret
}
Buffer.prototype.toString = function (encoding, start, end) {
var self = this
encoding = String(encoding || 'utf8').toLowerCase()
start = Number(start) || 0
end = (end !== undefined)
? Number(end)
: end = self.length
// Fastpath empty strings
if (end === start)
return ''
var ret
switch (encoding) {
case 'hex':
ret = _hexSlice(self, start, end)
break
case 'utf8':
case 'utf-8':
ret = _utf8Slice(self, start, end)
break
case 'ascii':
ret = _asciiSlice(self, start, end)
break
case 'binary':
ret = _binarySlice(self, start, end)
break
case 'base64':
ret = _base64Slice(self, start, end)
break
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
ret = _utf16leSlice(self, start, end)
break
default:
throw new Error('Unknown encoding')
}
return ret
}
Buffer.prototype.toJSON = function () {
return {
type: 'Buffer',
data: Array.prototype.slice.call(this._arr || this, 0)
}
}
// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length)
Buffer.prototype.copy = function (target, target_start, start, end) {
var source = this
if (!start) start = 0
if (!end && end !== 0) end = this.length
if (!target_start) target_start = 0
// Copy 0 bytes; we're done
if (end === start) return
if (target.length === 0 || source.length === 0) return
// Fatal error conditions
assert(end >= start, 'sourceEnd < sourceStart')
assert(target_start >= 0 && target_start < target.length,
'targetStart out of bounds')
assert(start >= 0 && start < source.length, 'sourceStart out of bounds')
assert(end >= 0 && end <= source.length, 'sourceEnd out of bounds')
// Are we oob?
if (end > this.length)
end = this.length
if (target.length - target_start < end - start)
end = target.length - target_start + start
var len = end - start
if (len < 100 || !Buffer._useTypedArrays) {
for (var i = 0; i < len; i++)
target[i + target_start] = this[i + start]
} else {
target._set(this.subarray(start, start + len), target_start)
}
}
function _base64Slice (buf, start, end) {
if (start === 0 && end === buf.length) {
return base64.fromByteArray(buf)
} else {
return base64.fromByteArray(buf.slice(start, end))
}
}
function _utf8Slice (buf, start, end) {
var res = ''
var tmp = ''
end = Math.min(buf.length, end)
for (var i = start; i < end; i++) {
if (buf[i] <= 0x7F) {
res += decodeUtf8Char(tmp) + String.fromCharCode(buf[i])
tmp = ''
} else {
tmp += '%' + buf[i].toString(16)
}
}
return res + decodeUtf8Char(tmp)
}
function _asciiSlice (buf, start, end) {
var ret = ''
end = Math.min(buf.length, end)
for (var i = start; i < end; i++)
ret += String.fromCharCode(buf[i])
return ret
}
function _binarySlice (buf, start, end) {
return _asciiSlice(buf, start, end)
}
function _hexSlice (buf, start, end) {
var len = buf.length
if (!start || start < 0) start = 0
if (!end || end < 0 || end > len) end = len
var out = ''
for (var i = start; i < end; i++) {
out += toHex(buf[i])
}
return out
}
function _utf16leSlice (buf, start, end) {
var bytes = buf.slice(start, end)
var res = ''
for (var i = 0; i < bytes.length; i += 2) {
res += String.fromCharCode(bytes[i] + bytes[i+1] * 256)
}
return res
}
Buffer.prototype.slice = function (start, end) {
var len = this.length
start = clamp(start, len, 0)
end = clamp(end, len, len)
if (Buffer._useTypedArrays) {
return Buffer._augment(this.subarray(start, end))
} else {
var sliceLen = end - start
var newBuf = new Buffer(sliceLen, undefined, true)
for (var i = 0; i < sliceLen; i++) {
newBuf[i] = this[i + start]
}
return newBuf
}
}
// `get` will be removed in Node 0.13+
Buffer.prototype.get = function (offset) {
console.log('.get() is deprecated. Access using array indexes instead.')
return this.readUInt8(offset)
}
// `set` will be removed in Node 0.13+
Buffer.prototype.set = function (v, offset) {
console.log('.set() is deprecated. Access using array indexes instead.')
return this.writeUInt8(v, offset)
}
Buffer.prototype.readUInt8 = function (offset, noAssert) {
if (!noAssert) {
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset < this.length, 'Trying to read beyond buffer length')
}
if (offset >= this.length)
return
return this[offset]
}
function _readUInt16 (buf, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset + 1 < buf.length, 'Trying to read beyond buffer length')
}
var len = buf.length
if (offset >= len)
return
var val
if (littleEndian) {
val = buf[offset]
if (offset + 1 < len)
val |= buf[offset + 1] << 8
} else {
val = buf[offset] << 8
if (offset + 1 < len)
val |= buf[offset + 1]
}
return val
}
Buffer.prototype.readUInt16LE = function (offset, noAssert) {
return _readUInt16(this, offset, true, noAssert)
}
Buffer.prototype.readUInt16BE = function (offset, noAssert) {
return _readUInt16(this, offset, false, noAssert)
}
function _readUInt32 (buf, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset + 3 < buf.length, 'Trying to read beyond buffer length')
}
var len = buf.length
if (offset >= len)
return
var val
if (littleEndian) {
if (offset + 2 < len)
val = buf[offset + 2] << 16
if (offset + 1 < len)
val |= buf[offset + 1] << 8
val |= buf[offset]
if (offset + 3 < len)
val = val + (buf[offset + 3] << 24 >>> 0)
} else {
if (offset + 1 < len)
val = buf[offset + 1] << 16
if (offset + 2 < len)
val |= buf[offset + 2] << 8
if (offset + 3 < len)
val |= buf[offset + 3]
val = val + (buf[offset] << 24 >>> 0)
}
return val
}
Buffer.prototype.readUInt32LE = function (offset, noAssert) {
return _readUInt32(this, offset, true, noAssert)
}
Buffer.prototype.readUInt32BE = function (offset, noAssert) {
return _readUInt32(this, offset, false, noAssert)
}
Buffer.prototype.readInt8 = function (offset, noAssert) {
if (!noAssert) {
assert(offset !== undefined && offset !== null,
'missing offset')
assert(offset < this.length, 'Trying to read beyond buffer length')
}
if (offset >= this.length)
return
var neg = this[offset] & 0x80
if (neg)
return (0xff - this[offset] + 1) * -1
else
return this[offset]
}
function _readInt16 (buf, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset + 1 < buf.length, 'Trying to read beyond buffer length')
}
var len = buf.length
if (offset >= len)
return
var val = _readUInt16(buf, offset, littleEndian, true)
var neg = val & 0x8000
if (neg)
return (0xffff - val + 1) * -1
else
return val
}
Buffer.prototype.readInt16LE = function (offset, noAssert) {
return _readInt16(this, offset, true, noAssert)
}
Buffer.prototype.readInt16BE = function (offset, noAssert) {
return _readInt16(this, offset, false, noAssert)
}
function _readInt32 (buf, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset + 3 < buf.length, 'Trying to read beyond buffer length')
}
var len = buf.length
if (offset >= len)
return
var val = _readUInt32(buf, offset, littleEndian, true)
var neg = val & 0x80000000
if (neg)
return (0xffffffff - val + 1) * -1
else
return val
}
Buffer.prototype.readInt32LE = function (offset, noAssert) {
return _readInt32(this, offset, true, noAssert)
}
Buffer.prototype.readInt32BE = function (offset, noAssert) {
return _readInt32(this, offset, false, noAssert)
}
function _readFloat (buf, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset + 3 < buf.length, 'Trying to read beyond buffer length')
}
return ieee754.read(buf, offset, littleEndian, 23, 4)
}
Buffer.prototype.readFloatLE = function (offset, noAssert) {
return _readFloat(this, offset, true, noAssert)
}
Buffer.prototype.readFloatBE = function (offset, noAssert) {
return _readFloat(this, offset, false, noAssert)
}
function _readDouble (buf, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset + 7 < buf.length, 'Trying to read beyond buffer length')
}
return ieee754.read(buf, offset, littleEndian, 52, 8)
}
Buffer.prototype.readDoubleLE = function (offset, noAssert) {
return _readDouble(this, offset, true, noAssert)
}
Buffer.prototype.readDoubleBE = function (offset, noAssert) {
return _readDouble(this, offset, false, noAssert)
}
Buffer.prototype.writeUInt8 = function (value, offset, noAssert) {
if (!noAssert) {
assert(value !== undefined && value !== null, 'missing value')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset < this.length, 'trying to write beyond buffer length')
verifuint(value, 0xff)
}
if (offset >= this.length) return
this[offset] = value
}
function _writeUInt16 (buf, value, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(value !== undefined && value !== null, 'missing value')
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset + 1 < buf.length, 'trying to write beyond buffer length')
verifuint(value, 0xffff)
}
var len = buf.length
if (offset >= len)
return
for (var i = 0, j = Math.min(len - offset, 2); i < j; i++) {
buf[offset + i] =
(value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>
(littleEndian ? i : 1 - i) * 8
}
}
Buffer.prototype.writeUInt16LE = function (value, offset, noAssert) {
_writeUInt16(this, value, offset, true, noAssert)
}
Buffer.prototype.writeUInt16BE = function (value, offset, noAssert) {
_writeUInt16(this, value, offset, false, noAssert)
}
function _writeUInt32 (buf, value, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(value !== undefined && value !== null, 'missing value')
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset + 3 < buf.length, 'trying to write beyond buffer length')
verifuint(value, 0xffffffff)
}
var len = buf.length
if (offset >= len)
return
for (var i = 0, j = Math.min(len - offset, 4); i < j; i++) {
buf[offset + i] =
(value >>> (littleEndian ? i : 3 - i) * 8) & 0xff
}
}
Buffer.prototype.writeUInt32LE = function (value, offset, noAssert) {
_writeUInt32(this, value, offset, true, noAssert)
}
Buffer.prototype.writeUInt32BE = function (value, offset, noAssert) {
_writeUInt32(this, value, offset, false, noAssert)
}
Buffer.prototype.writeInt8 = function (value, offset, noAssert) {
if (!noAssert) {
assert(value !== undefined && value !== null, 'missing value')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset < this.length, 'Trying to write beyond buffer length')
verifsint(value, 0x7f, -0x80)
}
if (offset >= this.length)
return
if (value >= 0)
this.writeUInt8(value, offset, noAssert)
else
this.writeUInt8(0xff + value + 1, offset, noAssert)
}
function _writeInt16 (buf, value, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(value !== undefined && value !== null, 'missing value')
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset + 1 < buf.length, 'Trying to write beyond buffer length')
verifsint(value, 0x7fff, -0x8000)
}
var len = buf.length
if (offset >= len)
return
if (value >= 0)
_writeUInt16(buf, value, offset, littleEndian, noAssert)
else
_writeUInt16(buf, 0xffff + value + 1, offset, littleEndian, noAssert)
}
Buffer.prototype.writeInt16LE = function (value, offset, noAssert) {
_writeInt16(this, value, offset, true, noAssert)
}
Buffer.prototype.writeInt16BE = function (value, offset, noAssert) {
_writeInt16(this, value, offset, false, noAssert)
}
function _writeInt32 (buf, value, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(value !== undefined && value !== null, 'missing value')
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset + 3 < buf.length, 'Trying to write beyond buffer length')
verifsint(value, 0x7fffffff, -0x80000000)
}
var len = buf.length
if (offset >= len)
return
if (value >= 0)
_writeUInt32(buf, value, offset, littleEndian, noAssert)
else
_writeUInt32(buf, 0xffffffff + value + 1, offset, littleEndian, noAssert)
}
Buffer.prototype.writeInt32LE = function (value, offset, noAssert) {
_writeInt32(this, value, offset, true, noAssert)
}
Buffer.prototype.writeInt32BE = function (value, offset, noAssert) {
_writeInt32(this, value, offset, false, noAssert)
}
function _writeFloat (buf, value, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(value !== undefined && value !== null, 'missing value')
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset + 3 < buf.length, 'Trying to write beyond buffer length')
verifIEEE754(value, 3.4028234663852886e+38, -3.4028234663852886e+38)
}
var len = buf.length
if (offset >= len)
return
ieee754.write(buf, value, offset, littleEndian, 23, 4)
}
Buffer.prototype.writeFloatLE = function (value, offset, noAssert) {
_writeFloat(this, value, offset, true, noAssert)
}
Buffer.prototype.writeFloatBE = function (value, offset, noAssert) {
_writeFloat(this, value, offset, false, noAssert)
}
function _writeDouble (buf, value, offset, littleEndian, noAssert) {
if (!noAssert) {
assert(value !== undefined && value !== null, 'missing value')
assert(typeof littleEndian === 'boolean', 'missing or invalid endian')
assert(offset !== undefined && offset !== null, 'missing offset')
assert(offset + 7 < buf.length,
'Trying to write beyond buffer length')
verifIEEE754(value, 1.7976931348623157E+308, -1.7976931348623157E+308)
}
var len = buf.length
if (offset >= len)
return
ieee754.write(buf, value, offset, littleEndian, 52, 8)
}
Buffer.prototype.writeDoubleLE = function (value, offset, noAssert) {
_writeDouble(this, value, offset, true, noAssert)
}
Buffer.prototype.writeDoubleBE = function (value, offset, noAssert) {
_writeDouble(this, value, offset, false, noAssert)
}
// fill(value, start=0, end=buffer.length)
Buffer.prototype.fill = function (value, start, end) {
if (!value) value = 0
if (!start) start = 0
if (!end) end = this.length
if (typeof value === 'string') {
value = value.charCodeAt(0)
}
assert(typeof value === 'number' && !isNaN(value), 'value is not a number')
assert(end >= start, 'end < start')
// Fill 0 bytes; we're done
if (end === start) return
if (this.length === 0) return
assert(start >= 0 && start < this.length, 'start out of bounds')
assert(end >= 0 && end <= this.length, 'end out of bounds')
for (var i = start; i < end; i++) {
this[i] = value
}
}
Buffer.prototype.inspect = function () {
var out = []
var len = this.length
for (var i = 0; i < len; i++) {
out[i] = toHex(this[i])
if (i === exports.INSPECT_MAX_BYTES) {
out[i + 1] = '...'
break
}
}
return '<Buffer ' + out.join(' ') + '>'
}
/**
* Creates a new `ArrayBuffer` with the *copied* memory of the buffer instance.
* Added in Node 0.12. Only available in browsers that support ArrayBuffer.
*/
Buffer.prototype.toArrayBuffer = function () {
if (typeof Uint8Array !== 'undefined') {
if (Buffer._useTypedArrays) {
return (new Buffer(this)).buffer
} else {
var buf = new Uint8Array(this.length)
for (var i = 0, len = buf.length; i < len; i += 1)
buf[i] = this[i]
return buf.buffer
}
} else {
throw new Error('Buffer.toArrayBuffer not supported in this browser')
}
}
// HELPER FUNCTIONS
// ================
function stringtrim (str) {
if (str.trim) return str.trim()
return str.replace(/^\s+|\s+$/g, '')
}
var BP = Buffer.prototype
/**
* Augment a Uint8Array *instance* (not the Uint8Array class!) with Buffer methods
*/
Buffer._augment = function (arr) {
arr._isBuffer = true
// save reference to original Uint8Array get/set methods before overwriting
arr._get = arr.get
arr._set = arr.set
// deprecated, will be removed in node 0.13+
arr.get = BP.get
arr.set = BP.set
arr.write = BP.write
arr.toString = BP.toString
arr.toLocaleString = BP.toString
arr.toJSON = BP.toJSON
arr.copy = BP.copy
arr.slice = BP.slice
arr.readUInt8 = BP.readUInt8
arr.readUInt16LE = BP.readUInt16LE
arr.readUInt16BE = BP.readUInt16BE
arr.readUInt32LE = BP.readUInt32LE
arr.readUInt32BE = BP.readUInt32BE
arr.readInt8 = BP.readInt8
arr.readInt16LE = BP.readInt16LE
arr.readInt16BE = BP.readInt16BE
arr.readInt32LE = BP.readInt32LE
arr.readInt32BE = BP.readInt32BE
arr.readFloatLE = BP.readFloatLE
arr.readFloatBE = BP.readFloatBE
arr.readDoubleLE = BP.readDoubleLE
arr.readDoubleBE = BP.readDoubleBE
arr.writeUInt8 = BP.writeUInt8
arr.writeUInt16LE = BP.writeUInt16LE
arr.writeUInt16BE = BP.writeUInt16BE
arr.writeUInt32LE = BP.writeUInt32LE
arr.writeUInt32BE = BP.writeUInt32BE
arr.writeInt8 = BP.writeInt8
arr.writeInt16LE = BP.writeInt16LE
arr.writeInt16BE = BP.writeInt16BE
arr.writeInt32LE = BP.writeInt32LE
arr.writeInt32BE = BP.writeInt32BE
arr.writeFloatLE = BP.writeFloatLE
arr.writeFloatBE = BP.writeFloatBE
arr.writeDoubleLE = BP.writeDoubleLE
arr.writeDoubleBE = BP.writeDoubleBE
arr.fill = BP.fill
arr.inspect = BP.inspect
arr.toArrayBuffer = BP.toArrayBuffer
return arr
}
// slice(start, end)
function clamp (index, len, defaultValue) {
if (typeof index !== 'number') return defaultValue
index = ~~index; // Coerce to integer.
if (index >= len) return len
if (index >= 0) return index
index += len
if (index >= 0) return index
return 0
}
function coerce (length) {
// Coerce length to a number (possibly NaN), round up
// in case it's fractional (e.g. 123.456) then do a
// double negate to coerce a NaN to 0. Easy, right?
length = ~~Math.ceil(+length)
return length < 0 ? 0 : length
}
function isArray (subject) {
return (Array.isArray || function (subject) {
return Object.prototype.toString.call(subject) === '[object Array]'
})(subject)
}
function isArrayish (subject) {
return isArray(subject) || Buffer.isBuffer(subject) ||
subject && typeof subject === 'object' &&
typeof subject.length === 'number'
}
function toHex (n) {
if (n < 16) return '0' + n.toString(16)
return n.toString(16)
}
function utf8ToBytes (str) {
var byteArray = []
for (var i = 0; i < str.length; i++) {
var b = str.charCodeAt(i)
if (b <= 0x7F)
byteArray.push(str.charCodeAt(i))
else {
var start = i
if (b >= 0xD800 && b <= 0xDFFF) i++
var h = encodeURIComponent(str.slice(start, i+1)).substr(1).split('%')
for (var j = 0; j < h.length; j++)
byteArray.push(parseInt(h[j], 16))
}
}
return byteArray
}
function asciiToBytes (str) {
var byteArray = []
for (var i = 0; i < str.length; i++) {
// Node's code seems to be doing this and not & 0x7F..
byteArray.push(str.charCodeAt(i) & 0xFF)
}
return byteArray
}
function utf16leToBytes (str) {
var c, hi, lo
var byteArray = []
for (var i = 0; i < str.length; i++) {
c = str.charCodeAt(i)
hi = c >> 8
lo = c % 256
byteArray.push(lo)
byteArray.push(hi)
}
return byteArray
}
function base64ToBytes (str) {
return base64.toByteArray(str)
}
function blitBuffer (src, dst, offset, length) {
var pos
for (var i = 0; i < length; i++) {
if ((i + offset >= dst.length) || (i >= src.length))
break
dst[i + offset] = src[i]
}
return i
}
function decodeUtf8Char (str) {
try {
return decodeURIComponent(str)
} catch (err) {
return String.fromCharCode(0xFFFD) // UTF 8 invalid char
}
}
/*
* We have to make sure that the value is a valid integer. This means that it
* is non-negative. It has no fractional component and that it does not
* exceed the maximum allowed value.
*/
function verifuint (value, max) {
assert(typeof value === 'number', 'cannot write a non-number as a number')
assert(value >= 0, 'specified a negative value for writing an unsigned value')
assert(value <= max, 'value is larger than maximum value for type')
assert(Math.floor(value) === value, 'value has a fractional component')
}
function verifsint (value, max, min) {
assert(typeof value === 'number', 'cannot write a non-number as a number')
assert(value <= max, 'value larger than maximum allowed value')
assert(value >= min, 'value smaller than minimum allowed value')
assert(Math.floor(value) === value, 'value has a fractional component')
}
function verifIEEE754 (value, max, min) {
assert(typeof value === 'number', 'cannot write a non-number as a number')
assert(value <= max, 'value larger than maximum allowed value')
assert(value >= min, 'value smaller than minimum allowed value')
}
function assert (test, message) {
if (!test) throw new Error(message || 'Failed assertion')
}
},{"base64-js":6,"ieee754":18}],8:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
function EventEmitter() {
this._events = this._events || {};
this._maxListeners = this._maxListeners || undefined;
}
module.exports = EventEmitter;
// Backwards-compat with node 0.10.x
EventEmitter.EventEmitter = EventEmitter;
EventEmitter.prototype._events = undefined;
EventEmitter.prototype._maxListeners = undefined;
// By default EventEmitters will print a warning if more than 10 listeners are
// added to it. This is a useful default which helps finding memory leaks.
EventEmitter.defaultMaxListeners = 10;
// Obviously not all Emitters should be limited to 10. This function allows
// that to be increased. Set to zero for unlimited.
EventEmitter.prototype.setMaxListeners = function(n) {
if (!isNumber(n) || n < 0 || isNaN(n))
throw TypeError('n must be a positive number');
this._maxListeners = n;
return this;
};
EventEmitter.prototype.emit = function(type) {
var er, handler, len, args, i, listeners;
if (!this._events)
this._events = {};
// If there is no 'error' event listener then throw.
if (type === 'error') {
if (!this._events.error ||
(isObject(this._events.error) && !this._events.error.length)) {
er = arguments[1];
if (er instanceof Error) {
throw er; // Unhandled 'error' event
}
throw TypeError('Uncaught, unspecified "error" event.');
}
}
handler = this._events[type];
if (isUndefined(handler))
return false;
if (isFunction(handler)) {
switch (arguments.length) {
// fast cases
case 1:
handler.call(this);
break;
case 2:
handler.call(this, arguments[1]);
break;
case 3:
handler.call(this, arguments[1], arguments[2]);
break;
// slower
default:
len = arguments.length;
args = new Array(len - 1);
for (i = 1; i < len; i++)
args[i - 1] = arguments[i];
handler.apply(this, args);
}
} else if (isObject(handler)) {
len = arguments.length;
args = new Array(len - 1);
for (i = 1; i < len; i++)
args[i - 1] = arguments[i];
listeners = handler.slice();
len = listeners.length;
for (i = 0; i < len; i++)
listeners[i].apply(this, args);
}
return true;
};
EventEmitter.prototype.addListener = function(type, listener) {
var m;
if (!isFunction(listener))
throw TypeError('listener must be a function');
if (!this._events)
this._events = {};
// To avoid recursion in the case that type === "newListener"! Before
// adding it to the listeners, first emit "newListener".
if (this._events.newListener)
this.emit('newListener', type,
isFunction(listener.listener) ?
listener.listener : listener);
if (!this._events[type])
// Optimize the case of one listener. Don't need the extra array object.
this._events[type] = listener;
else if (isObject(this._events[type]))
// If we've already got an array, just append.
this._events[type].push(listener);
else
// Adding the second element, need to change to array.
this._events[type] = [this._events[type], listener];
// Check for listener leak
if (isObject(this._events[type]) && !this._events[type].warned) {
var m;
if (!isUndefined(this._maxListeners)) {
m = this._maxListeners;
} else {
m = EventEmitter.defaultMaxListeners;
}
if (m && m > 0 && this._events[type].length > m) {
this._events[type].warned = true;
console.error('(node) warning: possible EventEmitter memory ' +
'leak detected. %d listeners added. ' +
'Use emitter.setMaxListeners() to increase limit.',
this._events[type].length);
if (typeof console.trace === 'function') {
// not supported in IE 10
console.trace();
}
}
}
return this;
};
EventEmitter.prototype.on = EventEmitter.prototype.addListener;
EventEmitter.prototype.once = function(type, listener) {
if (!isFunction(listener))
throw TypeError('listener must be a function');
var fired = false;
function g() {
this.removeListener(type, g);
if (!fired) {
fired = true;
listener.apply(this, arguments);
}
}
g.listener = listener;
this.on(type, g);
return this;
};
// emits a 'removeListener' event iff the listener was removed
EventEmitter.prototype.removeListener = function(type, listener) {
var list, position, length, i;
if (!isFunction(listener))
throw TypeError('listener must be a function');
if (!this._events || !this._events[type])
return this;
list = this._events[type];
length = list.length;
position = -1;
if (list === listener ||
(isFunction(list.listener) && list.listener === listener)) {
delete this._events[type];
if (this._events.removeListener)
this.emit('removeListener', type, listener);
} else if (isObject(list)) {
for (i = length; i-- > 0;) {
if (list[i] === listener ||
(list[i].listener && list[i].listener === listener)) {
position = i;
break;
}
}
if (position < 0)
return this;
if (list.length === 1) {
list.length = 0;
delete this._events[type];
} else {
list.splice(position, 1);
}
if (this._events.removeListener)
this.emit('removeListener', type, listener);
}
return this;
};
EventEmitter.prototype.removeAllListeners = function(type) {
var key, listeners;
if (!this._events)
return this;
// not listening for removeListener, no need to emit
if (!this._events.removeListener) {
if (arguments.length === 0)
this._events = {};
else if (this._events[type])
delete this._events[type];
return this;
}
// emit removeListener for all listeners on all events
if (arguments.length === 0) {
for (key in this._events) {
if (key === 'removeListener') continue;
this.removeAllListeners(key);
}
this.removeAllListeners('removeListener');
this._events = {};
return this;
}
listeners = this._events[type];
if (isFunction(listeners)) {
this.removeListener(type, listeners);
} else {
// LIFO order
while (listeners.length)
this.removeListener(type, listeners[listeners.length - 1]);
}
delete this._events[type];
return this;
};
EventEmitter.prototype.listeners = function(type) {
var ret;
if (!this._events || !this._events[type])
ret = [];
else if (isFunction(this._events[type]))
ret = [this._events[type]];
else
ret = this._events[type].slice();
return ret;
};
EventEmitter.listenerCount = function(emitter, type) {
var ret;
if (!emitter._events || !emitter._events[type])
ret = 0;
else if (isFunction(emitter._events[type]))
ret = 1;
else
ret = emitter._events[type].length;
return ret;
};
function isFunction(arg) {
return typeof arg === 'function';
}
function isNumber(arg) {
return typeof arg === 'number';
}
function isObject(arg) {
return typeof arg === 'object' && arg !== null;
}
function isUndefined(arg) {
return arg === void 0;
}
},{}],9:[function(require,module,exports){
// shim for using process in browser
var process = module.exports = {};
process.nextTick = (function () {
var canSetImmediate = typeof window !== 'undefined'
&& window.setImmediate;
var canPost = typeof window !== 'undefined'
&& window.postMessage && window.addEventListener
;
if (canSetImmediate) {
return function (f) { return window.setImmediate(f) };
}
if (canPost) {
var queue = [];
window.addEventListener('message', function (ev) {
var source = ev.source;
if ((source === window || source === null) && ev.data === 'process-tick') {
ev.stopPropagation();
if (queue.length > 0) {
var fn = queue.shift();
fn();
}
}
}, true);
return function nextTick(fn) {
queue.push(fn);
window.postMessage('process-tick', '*');
};
}
return function nextTick(fn) {
setTimeout(fn, 0);
};
})();
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
function noop() {}
process.on = noop;
process.addListener = noop;
process.once = noop;
process.off = noop;
process.removeListener = noop;
process.removeAllListeners = noop;
process.emit = noop;
process.binding = function (name) {
throw new Error('process.binding is not supported');
}
// TODO(shtylman)
process.cwd = function () { return '/' };
process.chdir = function (dir) {
throw new Error('process.chdir is not supported');
};
},{}],10:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// a duplex stream is just a stream that is both readable and writable.
// Since JS doesn't have multiple prototypal inheritance, this class
// prototypally inherits from Readable, and then parasitically from
// Writable.
module.exports = Duplex;
var inherits = require('inherits');
var setImmediate = require('process/browser.js').nextTick;
var Readable = require('./readable.js');
var Writable = require('./writable.js');
inherits(Duplex, Readable);
Duplex.prototype.write = Writable.prototype.write;
Duplex.prototype.end = Writable.prototype.end;
Duplex.prototype._write = Writable.prototype._write;
function Duplex(options) {
if (!(this instanceof Duplex))
return new Duplex(options);
Readable.call(this, options);
Writable.call(this, options);
if (options && options.readable === false)
this.readable = false;
if (options && options.writable === false)
this.writable = false;
this.allowHalfOpen = true;
if (options && options.allowHalfOpen === false)
this.allowHalfOpen = false;
this.once('end', onend);
}
// the no-half-open enforcer
function onend() {
// if we allow half-open state, or if the writable side ended,
// then we're ok.
if (this.allowHalfOpen || this._writableState.ended)
return;
// no more data can be written.
// But allow more writes to happen in this tick.
var self = this;
setImmediate(function () {
self.end();
});
}
},{"./readable.js":14,"./writable.js":16,"inherits":19,"process/browser.js":12}],11:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
module.exports = Stream;
var EE = require('events').EventEmitter;
var inherits = require('inherits');
inherits(Stream, EE);
Stream.Readable = require('./readable.js');
Stream.Writable = require('./writable.js');
Stream.Duplex = require('./duplex.js');
Stream.Transform = require('./transform.js');
Stream.PassThrough = require('./passthrough.js');
// Backwards-compat with node 0.4.x
Stream.Stream = Stream;
// old-style streams. Note that the pipe method (the only relevant
// part of this class) is overridden in the Readable class.
function Stream() {
EE.call(this);
}
Stream.prototype.pipe = function(dest, options) {
var source = this;
function ondata(chunk) {
if (dest.writable) {
if (false === dest.write(chunk) && source.pause) {
source.pause();
}
}
}
source.on('data', ondata);
function ondrain() {
if (source.readable && source.resume) {
source.resume();
}
}
dest.on('drain', ondrain);
// If the 'end' option is not supplied, dest.end() will be called when
// source gets the 'end' or 'close' events. Only dest.end() once.
if (!dest._isStdio && (!options || options.end !== false)) {
source.on('end', onend);
source.on('close', onclose);
}
var didOnEnd = false;
function onend() {
if (didOnEnd) return;
didOnEnd = true;
dest.end();
}
function onclose() {
if (didOnEnd) return;
didOnEnd = true;
if (typeof dest.destroy === 'function') dest.destroy();
}
// don't leave dangling pipes when there are errors.
function onerror(er) {
cleanup();
if (EE.listenerCount(this, 'error') === 0) {
throw er; // Unhandled stream error in pipe.
}
}
source.on('error', onerror);
dest.on('error', onerror);
// remove all the event listeners that were added.
function cleanup() {
source.removeListener('data', ondata);
dest.removeListener('drain', ondrain);
source.removeListener('end', onend);
source.removeListener('close', onclose);
source.removeListener('error', onerror);
dest.removeListener('error', onerror);
source.removeListener('end', cleanup);
source.removeListener('close', cleanup);
dest.removeListener('close', cleanup);
}
source.on('end', cleanup);
source.on('close', cleanup);
dest.on('close', cleanup);
dest.emit('pipe', source);
// Allow for unix-like usage: A.pipe(B).pipe(C)
return dest;
};
},{"./duplex.js":10,"./passthrough.js":13,"./readable.js":14,"./transform.js":15,"./writable.js":16,"events":8,"inherits":19}],12:[function(require,module,exports){
// shim for using process in browser
var process = module.exports = {};
process.nextTick = (function () {
var canSetImmediate = typeof window !== 'undefined'
&& window.setImmediate;
var canPost = typeof window !== 'undefined'
&& window.postMessage && window.addEventListener
;
if (canSetImmediate) {
return function (f) { return window.setImmediate(f) };
}
if (canPost) {
var queue = [];
window.addEventListener('message', function (ev) {
var source = ev.source;
if ((source === window || source === null) && ev.data === 'process-tick') {
ev.stopPropagation();
if (queue.length > 0) {
var fn = queue.shift();
fn();
}
}
}, true);
return function nextTick(fn) {
queue.push(fn);
window.postMessage('process-tick', '*');
};
}
return function nextTick(fn) {
setTimeout(fn, 0);
};
})();
process.title = 'browser';
process.browser = true;
process.env = {};
process.argv = [];
process.binding = function (name) {
throw new Error('process.binding is not supported');
}
// TODO(shtylman)
process.cwd = function () { return '/' };
process.chdir = function (dir) {
throw new Error('process.chdir is not supported');
};
},{}],13:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// a passthrough stream.
// basically just the most minimal sort of Transform stream.
// Every written chunk gets output as-is.
module.exports = PassThrough;
var Transform = require('./transform.js');
var inherits = require('inherits');
inherits(PassThrough, Transform);
function PassThrough(options) {
if (!(this instanceof PassThrough))
return new PassThrough(options);
Transform.call(this, options);
}
PassThrough.prototype._transform = function(chunk, encoding, cb) {
cb(null, chunk);
};
},{"./transform.js":15,"inherits":19}],14:[function(require,module,exports){
(function (process){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
module.exports = Readable;
Readable.ReadableState = ReadableState;
var EE = require('events').EventEmitter;
var Stream = require('./index.js');
var Buffer = require('buffer').Buffer;
var setImmediate = require('process/browser.js').nextTick;
var StringDecoder;
var inherits = require('inherits');
inherits(Readable, Stream);
function ReadableState(options, stream) {
options = options || {};
// the point at which it stops calling _read() to fill the buffer
// Note: 0 is a valid value, means "don't call _read preemptively ever"
var hwm = options.highWaterMark;
this.highWaterMark = (hwm || hwm === 0) ? hwm : 16 * 1024;
// cast to ints.
this.highWaterMark = ~~this.highWaterMark;
this.buffer = [];
this.length = 0;
this.pipes = null;
this.pipesCount = 0;
this.flowing = false;
this.ended = false;
this.endEmitted = false;
this.reading = false;
// In streams that never have any data, and do push(null) right away,
// the consumer can miss the 'end' event if they do some I/O before
// consuming the stream. So, we don't emit('end') until some reading
// happens.
this.calledRead = false;
// a flag to be able to tell if the onwrite cb is called immediately,
// or on a later tick. We set this to true at first, becuase any
// actions that shouldn't happen until "later" should generally also
// not happen before the first write call.
this.sync = true;
// whenever we return null, then we set a flag to say
// that we're awaiting a 'readable' event emission.
this.needReadable = false;
this.emittedReadable = false;
this.readableListening = false;
// object stream flag. Used to make read(n) ignore n and to
// make all the buffer merging and length checks go away
this.objectMode = !!options.objectMode;
// Crypto is kind of old and crusty. Historically, its default string
// encoding is 'binary' so we have to make this configurable.
// Everything else in the universe uses 'utf8', though.
this.defaultEncoding = options.defaultEncoding || 'utf8';
// when piping, we only care about 'readable' events that happen
// after read()ing all the bytes and not getting any pushback.
this.ranOut = false;
// the number of writers that are awaiting a drain event in .pipe()s
this.awaitDrain = 0;
// if true, a maybeReadMore has been scheduled
this.readingMore = false;
this.decoder = null;
this.encoding = null;
if (options.encoding) {
if (!StringDecoder)
StringDecoder = require('string_decoder').StringDecoder;
this.decoder = new StringDecoder(options.encoding);
this.encoding = options.encoding;
}
}
function Readable(options) {
if (!(this instanceof Readable))
return new Readable(options);
this._readableState = new ReadableState(options, this);
// legacy
this.readable = true;
Stream.call(this);
}
// Manually shove something into the read() buffer.
// This returns true if the highWaterMark has not been hit yet,
// similar to how Writable.write() returns true if you should
// write() some more.
Readable.prototype.push = function(chunk, encoding) {
var state = this._readableState;
if (typeof chunk === 'string' && !state.objectMode) {
encoding = encoding || state.defaultEncoding;
if (encoding !== state.encoding) {
chunk = new Buffer(chunk, encoding);
encoding = '';
}
}
return readableAddChunk(this, state, chunk, encoding, false);
};
// Unshift should *always* be something directly out of read()
Readable.prototype.unshift = function(chunk) {
var state = this._readableState;
return readableAddChunk(this, state, chunk, '', true);
};
function readableAddChunk(stream, state, chunk, encoding, addToFront) {
var er = chunkInvalid(state, chunk);
if (er) {
stream.emit('error', er);
} else if (chunk === null || chunk === undefined) {
state.reading = false;
if (!state.ended)
onEofChunk(stream, state);
} else if (state.objectMode || chunk && chunk.length > 0) {
if (state.ended && !addToFront) {
var e = new Error('stream.push() after EOF');
stream.emit('error', e);
} else if (state.endEmitted && addToFront) {
var e = new Error('stream.unshift() after end event');
stream.emit('error', e);
} else {
if (state.decoder && !addToFront && !encoding)
chunk = state.decoder.write(chunk);
// update the buffer info.
state.length += state.objectMode ? 1 : chunk.length;
if (addToFront) {
state.buffer.unshift(chunk);
} else {
state.reading = false;
state.buffer.push(chunk);
}
if (state.needReadable)
emitReadable(stream);
maybeReadMore(stream, state);
}
} else if (!addToFront) {
state.reading = false;
}
return needMoreData(state);
}
// if it's past the high water mark, we can push in some more.
// Also, if we have no data yet, we can stand some
// more bytes. This is to work around cases where hwm=0,
// such as the repl. Also, if the push() triggered a
// readable event, and the user called read(largeNumber) such that
// needReadable was set, then we ought to push more, so that another
// 'readable' event will be triggered.
function needMoreData(state) {
return !state.ended &&
(state.needReadable ||
state.length < state.highWaterMark ||
state.length === 0);
}
// backwards compatibility.
Readable.prototype.setEncoding = function(enc) {
if (!StringDecoder)
StringDecoder = require('string_decoder').StringDecoder;
this._readableState.decoder = new StringDecoder(enc);
this._readableState.encoding = enc;
};
// Don't raise the hwm > 128MB
var MAX_HWM = 0x800000;
function roundUpToNextPowerOf2(n) {
if (n >= MAX_HWM) {
n = MAX_HWM;
} else {
// Get the next highest power of 2
n--;
for (var p = 1; p < 32; p <<= 1) n |= n >> p;
n++;
}
return n;
}
function howMuchToRead(n, state) {
if (state.length === 0 && state.ended)
return 0;
if (state.objectMode)
return n === 0 ? 0 : 1;
if (isNaN(n) || n === null) {
// only flow one buffer at a time
if (state.flowing && state.buffer.length)
return state.buffer[0].length;
else
return state.length;
}
if (n <= 0)
return 0;
// If we're asking for more than the target buffer level,
// then raise the water mark. Bump up to the next highest
// power of 2, to prevent increasing it excessively in tiny
// amounts.
if (n > state.highWaterMark)
state.highWaterMark = roundUpToNextPowerOf2(n);
// don't have that much. return null, unless we've ended.
if (n > state.length) {
if (!state.ended) {
state.needReadable = true;
return 0;
} else
return state.length;
}
return n;
}
// you can override either this method, or the async _read(n) below.
Readable.prototype.read = function(n) {
var state = this._readableState;
state.calledRead = true;
var nOrig = n;
if (typeof n !== 'number' || n > 0)
state.emittedReadable = false;
// if we're doing read(0) to trigger a readable event, but we
// already have a bunch of data in the buffer, then just trigger
// the 'readable' event and move on.
if (n === 0 &&
state.needReadable &&
(state.length >= state.highWaterMark || state.ended)) {
emitReadable(this);
return null;
}
n = howMuchToRead(n, state);
// if we've ended, and we're now clear, then finish it up.
if (n === 0 && state.ended) {
if (state.length === 0)
endReadable(this);
return null;
}
// All the actual chunk generation logic needs to be
// *below* the call to _read. The reason is that in certain
// synthetic stream cases, such as passthrough streams, _read
// may be a completely synchronous operation which may change
// the state of the read buffer, providing enough data when
// before there was *not* enough.
//
// So, the steps are:
// 1. Figure out what the state of things will be after we do
// a read from the buffer.
//
// 2. If that resulting state will trigger a _read, then call _read.
// Note that this may be asynchronous, or synchronous. Yes, it is
// deeply ugly to write APIs this way, but that still doesn't mean
// that the Readable class should behave improperly, as streams are
// designed to be sync/async agnostic.
// Take note if the _read call is sync or async (ie, if the read call
// has returned yet), so that we know whether or not it's safe to emit
// 'readable' etc.
//
// 3. Actually pull the requested chunks out of the buffer and return.
// if we need a readable event, then we need to do some reading.
var doRead = state.needReadable;
// if we currently have less than the highWaterMark, then also read some
if (state.length - n <= state.highWaterMark)
doRead = true;
// however, if we've ended, then there's no point, and if we're already
// reading, then it's unnecessary.
if (state.ended || state.reading)
doRead = false;
if (doRead) {
state.reading = true;
state.sync = true;
// if the length is currently zero, then we *need* a readable event.
if (state.length === 0)
state.needReadable = true;
// call internal read method
this._read(state.highWaterMark);
state.sync = false;
}
// If _read called its callback synchronously, then `reading`
// will be false, and we need to re-evaluate how much data we
// can return to the user.
if (doRead && !state.reading)
n = howMuchToRead(nOrig, state);
var ret;
if (n > 0)
ret = fromList(n, state);
else
ret = null;
if (ret === null) {
state.needReadable = true;
n = 0;
}
state.length -= n;
// If we have nothing in the buffer, then we want to know
// as soon as we *do* get something into the buffer.
if (state.length === 0 && !state.ended)
state.needReadable = true;
// If we happened to read() exactly the remaining amount in the
// buffer, and the EOF has been seen at this point, then make sure
// that we emit 'end' on the very next tick.
if (state.ended && !state.endEmitted && state.length === 0)
endReadable(this);
return ret;
};
function chunkInvalid(state, chunk) {
var er = null;
if (!Buffer.isBuffer(chunk) &&
'string' !== typeof chunk &&
chunk !== null &&
chunk !== undefined &&
!state.objectMode &&
!er) {
er = new TypeError('Invalid non-string/buffer chunk');
}
return er;
}
function onEofChunk(stream, state) {
if (state.decoder && !state.ended) {
var chunk = state.decoder.end();
if (chunk && chunk.length) {
state.buffer.push(chunk);
state.length += state.objectMode ? 1 : chunk.length;
}
}
state.ended = true;
// if we've ended and we have some data left, then emit
// 'readable' now to make sure it gets picked up.
if (state.length > 0)
emitReadable(stream);
else
endReadable(stream);
}
// Don't emit readable right away in sync mode, because this can trigger
// another read() call => stack overflow. This way, it might trigger
// a nextTick recursion warning, but that's not so bad.
function emitReadable(stream) {
var state = stream._readableState;
state.needReadable = false;
if (state.emittedReadable)
return;
state.emittedReadable = true;
if (state.sync)
setImmediate(function() {
emitReadable_(stream);
});
else
emitReadable_(stream);
}
function emitReadable_(stream) {
stream.emit('readable');
}
// at this point, the user has presumably seen the 'readable' event,
// and called read() to consume some data. that may have triggered
// in turn another _read(n) call, in which case reading = true if
// it's in progress.
// However, if we're not ended, or reading, and the length < hwm,
// then go ahead and try to read some more preemptively.
function maybeReadMore(stream, state) {
if (!state.readingMore) {
state.readingMore = true;
setImmediate(function() {
maybeReadMore_(stream, state);
});
}
}
function maybeReadMore_(stream, state) {
var len = state.length;
while (!state.reading && !state.flowing && !state.ended &&
state.length < state.highWaterMark) {
stream.read(0);
if (len === state.length)
// didn't get any data, stop spinning.
break;
else
len = state.length;
}
state.readingMore = false;
}
// abstract method. to be overridden in specific implementation classes.
// call cb(er, data) where data is <= n in length.
// for virtual (non-string, non-buffer) streams, "length" is somewhat
// arbitrary, and perhaps not very meaningful.
Readable.prototype._read = function(n) {
this.emit('error', new Error('not implemented'));
};
Readable.prototype.pipe = function(dest, pipeOpts) {
var src = this;
var state = this._readableState;
switch (state.pipesCount) {
case 0:
state.pipes = dest;
break;
case 1:
state.pipes = [state.pipes, dest];
break;
default:
state.pipes.push(dest);
break;
}
state.pipesCount += 1;
var doEnd = (!pipeOpts || pipeOpts.end !== false) &&
dest !== process.stdout &&
dest !== process.stderr;
var endFn = doEnd ? onend : cleanup;
if (state.endEmitted)
setImmediate(endFn);
else
src.once('end', endFn);
dest.on('unpipe', onunpipe);
function onunpipe(readable) {
if (readable !== src) return;
cleanup();
}
function onend() {
dest.end();
}
// when the dest drains, it reduces the awaitDrain counter
// on the source. This would be more elegant with a .once()
// handler in flow(), but adding and removing repeatedly is
// too slow.
var ondrain = pipeOnDrain(src);
dest.on('drain', ondrain);
function cleanup() {
// cleanup event handlers once the pipe is broken
dest.removeListener('close', onclose);
dest.removeListener('finish', onfinish);
dest.removeListener('drain', ondrain);
dest.removeListener('error', onerror);
dest.removeListener('unpipe', onunpipe);
src.removeListener('end', onend);
src.removeListener('end', cleanup);
// if the reader is waiting for a drain event from this
// specific writer, then it would cause it to never start
// flowing again.
// So, if this is awaiting a drain, then we just call it now.
// If we don't know, then assume that we are waiting for one.
if (!dest._writableState || dest._writableState.needDrain)
ondrain();
}
// if the dest has an error, then stop piping into it.
// however, don't suppress the throwing behavior for this.
// check for listeners before emit removes one-time listeners.
var errListeners = EE.listenerCount(dest, 'error');
function onerror(er) {
unpipe();
if (errListeners === 0 && EE.listenerCount(dest, 'error') === 0)
dest.emit('error', er);
}
dest.once('error', onerror);
// Both close and finish should trigger unpipe, but only once.
function onclose() {
dest.removeListener('finish', onfinish);
unpipe();
}
dest.once('close', onclose);
function onfinish() {
dest.removeListener('close', onclose);
unpipe();
}
dest.once('finish', onfinish);
function unpipe() {
src.unpipe(dest);
}
// tell the dest that it's being piped to
dest.emit('pipe', src);
// start the flow if it hasn't been started already.
if (!state.flowing) {
// the handler that waits for readable events after all
// the data gets sucked out in flow.
// This would be easier to follow with a .once() handler
// in flow(), but that is too slow.
this.on('readable', pipeOnReadable);
state.flowing = true;
setImmediate(function() {
flow(src);
});
}
return dest;
};
function pipeOnDrain(src) {
return function() {
var dest = this;
var state = src._readableState;
state.awaitDrain--;
if (state.awaitDrain === 0)
flow(src);
};
}
function flow(src) {
var state = src._readableState;
var chunk;
state.awaitDrain = 0;
function write(dest, i, list) {
var written = dest.write(chunk);
if (false === written) {
state.awaitDrain++;
}
}
while (state.pipesCount && null !== (chunk = src.read())) {
if (state.pipesCount === 1)
write(state.pipes, 0, null);
else
forEach(state.pipes, write);
src.emit('data', chunk);
// if anyone needs a drain, then we have to wait for that.
if (state.awaitDrain > 0)
return;
}
// if every destination was unpiped, either before entering this
// function, or in the while loop, then stop flowing.
//
// NB: This is a pretty rare edge case.
if (state.pipesCount === 0) {
state.flowing = false;
// if there were data event listeners added, then switch to old mode.
if (EE.listenerCount(src, 'data') > 0)
emitDataEvents(src);
return;
}
// at this point, no one needed a drain, so we just ran out of data
// on the next readable event, start it over again.
state.ranOut = true;
}
function pipeOnReadable() {
if (this._readableState.ranOut) {
this._readableState.ranOut = false;
flow(this);
}
}
Readable.prototype.unpipe = function(dest) {
var state = this._readableState;
// if we're not piping anywhere, then do nothing.
if (state.pipesCount === 0)
return this;
// just one destination. most common case.
if (state.pipesCount === 1) {
// passed in one, but it's not the right one.
if (dest && dest !== state.pipes)
return this;
if (!dest)
dest = state.pipes;
// got a match.
state.pipes = null;
state.pipesCount = 0;
this.removeListener('readable', pipeOnReadable);
state.flowing = false;
if (dest)
dest.emit('unpipe', this);
return this;
}
// slow case. multiple pipe destinations.
if (!dest) {
// remove all.
var dests = state.pipes;
var len = state.pipesCount;
state.pipes = null;
state.pipesCount = 0;
this.removeListener('readable', pipeOnReadable);
state.flowing = false;
for (var i = 0; i < len; i++)
dests[i].emit('unpipe', this);
return this;
}
// try to find the right one.
var i = indexOf(state.pipes, dest);
if (i === -1)
return this;
state.pipes.splice(i, 1);
state.pipesCount -= 1;
if (state.pipesCount === 1)
state.pipes = state.pipes[0];
dest.emit('unpipe', this);
return this;
};
// set up data events if they are asked for
// Ensure readable listeners eventually get something
Readable.prototype.on = function(ev, fn) {
var res = Stream.prototype.on.call(this, ev, fn);
if (ev === 'data' && !this._readableState.flowing)
emitDataEvents(this);
if (ev === 'readable' && this.readable) {
var state = this._readableState;
if (!state.readableListening) {
state.readableListening = true;
state.emittedReadable = false;
state.needReadable = true;
if (!state.reading) {
this.read(0);
} else if (state.length) {
emitReadable(this, state);
}
}
}
return res;
};
Readable.prototype.addListener = Readable.prototype.on;
// pause() and resume() are remnants of the legacy readable stream API
// If the user uses them, then switch into old mode.
Readable.prototype.resume = function() {
emitDataEvents(this);
this.read(0);
this.emit('resume');
};
Readable.prototype.pause = function() {
emitDataEvents(this, true);
this.emit('pause');
};
function emitDataEvents(stream, startPaused) {
var state = stream._readableState;
if (state.flowing) {
// https://github.com/isaacs/readable-stream/issues/16
throw new Error('Cannot switch to old mode now.');
}
var paused = startPaused || false;
var readable = false;
// convert to an old-style stream.
stream.readable = true;
stream.pipe = Stream.prototype.pipe;
stream.on = stream.addListener = Stream.prototype.on;
stream.on('readable', function() {
readable = true;
var c;
while (!paused && (null !== (c = stream.read())))
stream.emit('data', c);
if (c === null) {
readable = false;
stream._readableState.needReadable = true;
}
});
stream.pause = function() {
paused = true;
this.emit('pause');
};
stream.resume = function() {
paused = false;
if (readable)
setImmediate(function() {
stream.emit('readable');
});
else
this.read(0);
this.emit('resume');
};
// now make it start, just in case it hadn't already.
stream.emit('readable');
}
// wrap an old-style stream as the async data source.
// This is *not* part of the readable stream interface.
// It is an ugly unfortunate mess of history.
Readable.prototype.wrap = function(stream) {
var state = this._readableState;
var paused = false;
var self = this;
stream.on('end', function() {
if (state.decoder && !state.ended) {
var chunk = state.decoder.end();
if (chunk && chunk.length)
self.push(chunk);
}
self.push(null);
});
stream.on('data', function(chunk) {
if (state.decoder)
chunk = state.decoder.write(chunk);
if (!chunk || !state.objectMode && !chunk.length)
return;
var ret = self.push(chunk);
if (!ret) {
paused = true;
stream.pause();
}
});
// proxy all the other methods.
// important when wrapping filters and duplexes.
for (var i in stream) {
if (typeof stream[i] === 'function' &&
typeof this[i] === 'undefined') {
this[i] = function(method) { return function() {
return stream[method].apply(stream, arguments);
}}(i);
}
}
// proxy certain important events.
var events = ['error', 'close', 'destroy', 'pause', 'resume'];
forEach(events, function(ev) {
stream.on(ev, function (x) {
return self.emit.apply(self, ev, x);
});
});
// when we try to consume some more bytes, simply unpause the
// underlying stream.
self._read = function(n) {
if (paused) {
paused = false;
stream.resume();
}
};
return self;
};
// exposed for testing purposes only.
Readable._fromList = fromList;
// Pluck off n bytes from an array of buffers.
// Length is the combined lengths of all the buffers in the list.
function fromList(n, state) {
var list = state.buffer;
var length = state.length;
var stringMode = !!state.decoder;
var objectMode = !!state.objectMode;
var ret;
// nothing in the list, definitely empty.
if (list.length === 0)
return null;
if (length === 0)
ret = null;
else if (objectMode)
ret = list.shift();
else if (!n || n >= length) {
// read it all, truncate the array.
if (stringMode)
ret = list.join('');
else
ret = Buffer.concat(list, length);
list.length = 0;
} else {
// read just some of it.
if (n < list[0].length) {
// just take a part of the first list item.
// slice is the same for buffers and strings.
var buf = list[0];
ret = buf.slice(0, n);
list[0] = buf.slice(n);
} else if (n === list[0].length) {
// first list is a perfect match
ret = list.shift();
} else {
// complex case.
// we have enough to cover it, but it spans past the first buffer.
if (stringMode)
ret = '';
else
ret = new Buffer(n);
var c = 0;
for (var i = 0, l = list.length; i < l && c < n; i++) {
var buf = list[0];
var cpy = Math.min(n - c, buf.length);
if (stringMode)
ret += buf.slice(0, cpy);
else
buf.copy(ret, c, 0, cpy);
if (cpy < buf.length)
list[0] = buf.slice(cpy);
else
list.shift();
c += cpy;
}
}
}
return ret;
}
function endReadable(stream) {
var state = stream._readableState;
// If we get here before consuming all the bytes, then that is a
// bug in node. Should never happen.
if (state.length > 0)
throw new Error('endReadable called on non-empty stream');
if (!state.endEmitted && state.calledRead) {
state.ended = true;
setImmediate(function() {
// Check that we didn't get one last unshift.
if (!state.endEmitted && state.length === 0) {
state.endEmitted = true;
stream.readable = false;
stream.emit('end');
}
});
}
}
function forEach (xs, f) {
for (var i = 0, l = xs.length; i < l; i++) {
f(xs[i], i);
}
}
function indexOf (xs, x) {
for (var i = 0, l = xs.length; i < l; i++) {
if (xs[i] === x) return i;
}
return -1;
}
}).call(this,require("7YKIPe"))
},{"./index.js":11,"7YKIPe":9,"buffer":7,"events":8,"inherits":19,"process/browser.js":12,"string_decoder":17}],15:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// a transform stream is a readable/writable stream where you do
// something with the data. Sometimes it's called a "filter",
// but that's not a great name for it, since that implies a thing where
// some bits pass through, and others are simply ignored. (That would
// be a valid example of a transform, of course.)
//
// While the output is causally related to the input, it's not a
// necessarily symmetric or synchronous transformation. For example,
// a zlib stream might take multiple plain-text writes(), and then
// emit a single compressed chunk some time in the future.
//
// Here's how this works:
//
// The Transform stream has all the aspects of the readable and writable
// stream classes. When you write(chunk), that calls _write(chunk,cb)
// internally, and returns false if there's a lot of pending writes
// buffered up. When you call read(), that calls _read(n) until
// there's enough pending readable data buffered up.
//
// In a transform stream, the written data is placed in a buffer. When
// _read(n) is called, it transforms the queued up data, calling the
// buffered _write cb's as it consumes chunks. If consuming a single
// written chunk would result in multiple output chunks, then the first
// outputted bit calls the readcb, and subsequent chunks just go into
// the read buffer, and will cause it to emit 'readable' if necessary.
//
// This way, back-pressure is actually determined by the reading side,
// since _read has to be called to start processing a new chunk. However,
// a pathological inflate type of transform can cause excessive buffering
// here. For example, imagine a stream where every byte of input is
// interpreted as an integer from 0-255, and then results in that many
// bytes of output. Writing the 4 bytes {ff,ff,ff,ff} would result in
// 1kb of data being output. In this case, you could write a very small
// amount of input, and end up with a very large amount of output. In
// such a pathological inflating mechanism, there'd be no way to tell
// the system to stop doing the transform. A single 4MB write could
// cause the system to run out of memory.
//
// However, even in such a pathological case, only a single written chunk
// would be consumed, and then the rest would wait (un-transformed) until
// the results of the previous transformed chunk were consumed.
module.exports = Transform;
var Duplex = require('./duplex.js');
var inherits = require('inherits');
inherits(Transform, Duplex);
function TransformState(options, stream) {
this.afterTransform = function(er, data) {
return afterTransform(stream, er, data);
};
this.needTransform = false;
this.transforming = false;
this.writecb = null;
this.writechunk = null;
}
function afterTransform(stream, er, data) {
var ts = stream._transformState;
ts.transforming = false;
var cb = ts.writecb;
if (!cb)
return stream.emit('error', new Error('no writecb in Transform class'));
ts.writechunk = null;
ts.writecb = null;
if (data !== null && data !== undefined)
stream.push(data);
if (cb)
cb(er);
var rs = stream._readableState;
rs.reading = false;
if (rs.needReadable || rs.length < rs.highWaterMark) {
stream._read(rs.highWaterMark);
}
}
function Transform(options) {
if (!(this instanceof Transform))
return new Transform(options);
Duplex.call(this, options);
var ts = this._transformState = new TransformState(options, this);
// when the writable side finishes, then flush out anything remaining.
var stream = this;
// start out asking for a readable event once data is transformed.
this._readableState.needReadable = true;
// we have implemented the _read method, and done the other things
// that Readable wants before the first _read call, so unset the
// sync guard flag.
this._readableState.sync = false;
this.once('finish', function() {
if ('function' === typeof this._flush)
this._flush(function(er) {
done(stream, er);
});
else
done(stream);
});
}
Transform.prototype.push = function(chunk, encoding) {
this._transformState.needTransform = false;
return Duplex.prototype.push.call(this, chunk, encoding);
};
// This is the part where you do stuff!
// override this function in implementation classes.
// 'chunk' is an input chunk.
//
// Call `push(newChunk)` to pass along transformed output
// to the readable side. You may call 'push' zero or more times.
//
// Call `cb(err)` when you are done with this chunk. If you pass
// an error, then that'll put the hurt on the whole operation. If you
// never call cb(), then you'll never get another chunk.
Transform.prototype._transform = function(chunk, encoding, cb) {
throw new Error('not implemented');
};
Transform.prototype._write = function(chunk, encoding, cb) {
var ts = this._transformState;
ts.writecb = cb;
ts.writechunk = chunk;
ts.writeencoding = encoding;
if (!ts.transforming) {
var rs = this._readableState;
if (ts.needTransform ||
rs.needReadable ||
rs.length < rs.highWaterMark)
this._read(rs.highWaterMark);
}
};
// Doesn't matter what the args are here.
// _transform does all the work.
// That we got here means that the readable side wants more data.
Transform.prototype._read = function(n) {
var ts = this._transformState;
if (ts.writechunk && ts.writecb && !ts.transforming) {
ts.transforming = true;
this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform);
} else {
// mark that we need a transform, so that any data that comes in
// will get processed, now that we've asked for it.
ts.needTransform = true;
}
};
function done(stream, er) {
if (er)
return stream.emit('error', er);
// if there's nothing in the write buffer, then that means
// that nothing more will ever be provided
var ws = stream._writableState;
var rs = stream._readableState;
var ts = stream._transformState;
if (ws.length)
throw new Error('calling transform done when ws.length != 0');
if (ts.transforming)
throw new Error('calling transform done when still transforming');
return stream.push(null);
}
},{"./duplex.js":10,"inherits":19}],16:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
// A bit simpler than readable streams.
// Implement an async ._write(chunk, cb), and it'll handle all
// the drain event emission and buffering.
module.exports = Writable;
Writable.WritableState = WritableState;
var isUint8Array = typeof Uint8Array !== 'undefined'
? function (x) { return x instanceof Uint8Array }
: function (x) {
return x && x.constructor && x.constructor.name === 'Uint8Array'
}
;
var isArrayBuffer = typeof ArrayBuffer !== 'undefined'
? function (x) { return x instanceof ArrayBuffer }
: function (x) {
return x && x.constructor && x.constructor.name === 'ArrayBuffer'
}
;
var inherits = require('inherits');
var Stream = require('./index.js');
var setImmediate = require('process/browser.js').nextTick;
var Buffer = require('buffer').Buffer;
inherits(Writable, Stream);
function WriteReq(chunk, encoding, cb) {
this.chunk = chunk;
this.encoding = encoding;
this.callback = cb;
}
function WritableState(options, stream) {
options = options || {};
// the point at which write() starts returning false
// Note: 0 is a valid value, means that we always return false if
// the entire buffer is not flushed immediately on write()
var hwm = options.highWaterMark;
this.highWaterMark = (hwm || hwm === 0) ? hwm : 16 * 1024;
// object stream flag to indicate whether or not this stream
// contains buffers or objects.
this.objectMode = !!options.objectMode;
// cast to ints.
this.highWaterMark = ~~this.highWaterMark;
this.needDrain = false;
// at the start of calling end()
this.ending = false;
// when end() has been called, and returned
this.ended = false;
// when 'finish' is emitted
this.finished = false;
// should we decode strings into buffers before passing to _write?
// this is here so that some node-core streams can optimize string
// handling at a lower level.
var noDecode = options.decodeStrings === false;
this.decodeStrings = !noDecode;
// Crypto is kind of old and crusty. Historically, its default string
// encoding is 'binary' so we have to make this configurable.
// Everything else in the universe uses 'utf8', though.
this.defaultEncoding = options.defaultEncoding || 'utf8';
// not an actual buffer we keep track of, but a measurement
// of how much we're waiting to get pushed to some underlying
// socket or file.
this.length = 0;
// a flag to see when we're in the middle of a write.
this.writing = false;
// a flag to be able to tell if the onwrite cb is called immediately,
// or on a later tick. We set this to true at first, becuase any
// actions that shouldn't happen until "later" should generally also
// not happen before the first write call.
this.sync = true;
// a flag to know if we're processing previously buffered items, which
// may call the _write() callback in the same tick, so that we don't
// end up in an overlapped onwrite situation.
this.bufferProcessing = false;
// the callback that's passed to _write(chunk,cb)
this.onwrite = function(er) {
onwrite(stream, er);
};
// the callback that the user supplies to write(chunk,encoding,cb)
this.writecb = null;
// the amount that is being written when _write is called.
this.writelen = 0;
this.buffer = [];
}
function Writable(options) {
// Writable ctor is applied to Duplexes, though they're not
// instanceof Writable, they're instanceof Readable.
if (!(this instanceof Writable) && !(this instanceof Stream.Duplex))
return new Writable(options);
this._writableState = new WritableState(options, this);
// legacy.
this.writable = true;
Stream.call(this);
}
// Otherwise people can pipe Writable streams, which is just wrong.
Writable.prototype.pipe = function() {
this.emit('error', new Error('Cannot pipe. Not readable.'));
};
function writeAfterEnd(stream, state, cb) {
var er = new Error('write after end');
// TODO: defer error events consistently everywhere, not just the cb
stream.emit('error', er);
setImmediate(function() {
cb(er);
});
}
// If we get something that is not a buffer, string, null, or undefined,
// and we're not in objectMode, then that's an error.
// Otherwise stream chunks are all considered to be of length=1, and the
// watermarks determine how many objects to keep in the buffer, rather than
// how many bytes or characters.
function validChunk(stream, state, chunk, cb) {
var valid = true;
if (!Buffer.isBuffer(chunk) &&
'string' !== typeof chunk &&
chunk !== null &&
chunk !== undefined &&
!state.objectMode) {
var er = new TypeError('Invalid non-string/buffer chunk');
stream.emit('error', er);
setImmediate(function() {
cb(er);
});
valid = false;
}
return valid;
}
Writable.prototype.write = function(chunk, encoding, cb) {
var state = this._writableState;
var ret = false;
if (typeof encoding === 'function') {
cb = encoding;
encoding = null;
}
if (!Buffer.isBuffer(chunk) && isUint8Array(chunk))
chunk = new Buffer(chunk);
if (isArrayBuffer(chunk) && typeof Uint8Array !== 'undefined')
chunk = new Buffer(new Uint8Array(chunk));
if (Buffer.isBuffer(chunk))
encoding = 'buffer';
else if (!encoding)
encoding = state.defaultEncoding;
if (typeof cb !== 'function')
cb = function() {};
if (state.ended)
writeAfterEnd(this, state, cb);
else if (validChunk(this, state, chunk, cb))
ret = writeOrBuffer(this, state, chunk, encoding, cb);
return ret;
};
function decodeChunk(state, chunk, encoding) {
if (!state.objectMode &&
state.decodeStrings !== false &&
typeof chunk === 'string') {
chunk = new Buffer(chunk, encoding);
}
return chunk;
}
// if we're already writing something, then just put this
// in the queue, and wait our turn. Otherwise, call _write
// If we return false, then we need a drain event, so set that flag.
function writeOrBuffer(stream, state, chunk, encoding, cb) {
chunk = decodeChunk(state, chunk, encoding);
var len = state.objectMode ? 1 : chunk.length;
state.length += len;
var ret = state.length < state.highWaterMark;
state.needDrain = !ret;
if (state.writing)
state.buffer.push(new WriteReq(chunk, encoding, cb));
else
doWrite(stream, state, len, chunk, encoding, cb);
return ret;
}
function doWrite(stream, state, len, chunk, encoding, cb) {
state.writelen = len;
state.writecb = cb;
state.writing = true;
state.sync = true;
stream._write(chunk, encoding, state.onwrite);
state.sync = false;
}
function onwriteError(stream, state, sync, er, cb) {
if (sync)
setImmediate(function() {
cb(er);
});
else
cb(er);
stream.emit('error', er);
}
function onwriteStateUpdate(state) {
state.writing = false;
state.writecb = null;
state.length -= state.writelen;
state.writelen = 0;
}
function onwrite(stream, er) {
var state = stream._writableState;
var sync = state.sync;
var cb = state.writecb;
onwriteStateUpdate(state);
if (er)
onwriteError(stream, state, sync, er, cb);
else {
// Check if we're actually ready to finish, but don't emit yet
var finished = needFinish(stream, state);
if (!finished && !state.bufferProcessing && state.buffer.length)
clearBuffer(stream, state);
if (sync) {
setImmediate(function() {
afterWrite(stream, state, finished, cb);
});
} else {
afterWrite(stream, state, finished, cb);
}
}
}
function afterWrite(stream, state, finished, cb) {
if (!finished)
onwriteDrain(stream, state);
cb();
if (finished)
finishMaybe(stream, state);
}
// Must force callback to be called on nextTick, so that we don't
// emit 'drain' before the write() consumer gets the 'false' return
// value, and has a chance to attach a 'drain' listener.
function onwriteDrain(stream, state) {
if (state.length === 0 && state.needDrain) {
state.needDrain = false;
stream.emit('drain');
}
}
// if there's something in the buffer waiting, then process it
function clearBuffer(stream, state) {
state.bufferProcessing = true;
for (var c = 0; c < state.buffer.length; c++) {
var entry = state.buffer[c];
var chunk = entry.chunk;
var encoding = entry.encoding;
var cb = entry.callback;
var len = state.objectMode ? 1 : chunk.length;
doWrite(stream, state, len, chunk, encoding, cb);
// if we didn't call the onwrite immediately, then
// it means that we need to wait until it does.
// also, that means that the chunk and cb are currently
// being processed, so move the buffer counter past them.
if (state.writing) {
c++;
break;
}
}
state.bufferProcessing = false;
if (c < state.buffer.length)
state.buffer = state.buffer.slice(c);
else
state.buffer.length = 0;
}
Writable.prototype._write = function(chunk, encoding, cb) {
cb(new Error('not implemented'));
};
Writable.prototype.end = function(chunk, encoding, cb) {
var state = this._writableState;
if (typeof chunk === 'function') {
cb = chunk;
chunk = null;
encoding = null;
} else if (typeof encoding === 'function') {
cb = encoding;
encoding = null;
}
if (typeof chunk !== 'undefined' && chunk !== null)
this.write(chunk, encoding);
// ignore unnecessary end() calls.
if (!state.ending && !state.finished)
endWritable(this, state, cb);
};
function needFinish(stream, state) {
return (state.ending &&
state.length === 0 &&
!state.finished &&
!state.writing);
}
function finishMaybe(stream, state) {
var need = needFinish(stream, state);
if (need) {
state.finished = true;
stream.emit('finish');
}
return need;
}
function endWritable(stream, state, cb) {
state.ending = true;
finishMaybe(stream, state);
if (cb) {
if (state.finished)
setImmediate(cb);
else
stream.once('finish', cb);
}
state.ended = true;
}
},{"./index.js":11,"buffer":7,"inherits":19,"process/browser.js":12}],17:[function(require,module,exports){
// Copyright Joyent, Inc. and other Node contributors.
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to permit
// persons to whom the Software is furnished to do so, subject to the
// following conditions:
//
// The above copyright notice and this permission notice shall be included
// in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
// USE OR OTHER DEALINGS IN THE SOFTWARE.
var Buffer = require('buffer').Buffer;
function assertEncoding(encoding) {
if (encoding && !Buffer.isEncoding(encoding)) {
throw new Error('Unknown encoding: ' + encoding);
}
}
var StringDecoder = exports.StringDecoder = function(encoding) {
this.encoding = (encoding || 'utf8').toLowerCase().replace(/[-_]/, '');
assertEncoding(encoding);
switch (this.encoding) {
case 'utf8':
// CESU-8 represents each of Surrogate Pair by 3-bytes
this.surrogateSize = 3;
break;
case 'ucs2':
case 'utf16le':
// UTF-16 represents each of Surrogate Pair by 2-bytes
this.surrogateSize = 2;
this.detectIncompleteChar = utf16DetectIncompleteChar;
break;
case 'base64':
// Base-64 stores 3 bytes in 4 chars, and pads the remainder.
this.surrogateSize = 3;
this.detectIncompleteChar = base64DetectIncompleteChar;
break;
default:
this.write = passThroughWrite;
return;
}
this.charBuffer = new Buffer(6);
this.charReceived = 0;
this.charLength = 0;
};
StringDecoder.prototype.write = function(buffer) {
var charStr = '';
var offset = 0;
// if our last write ended with an incomplete multibyte character
while (this.charLength) {
// determine how many remaining bytes this buffer has to offer for this char
var i = (buffer.length >= this.charLength - this.charReceived) ?
this.charLength - this.charReceived :
buffer.length;
// add the new bytes to the char buffer
buffer.copy(this.charBuffer, this.charReceived, offset, i);
this.charReceived += (i - offset);
offset = i;
if (this.charReceived < this.charLength) {
// still not enough chars in this buffer? wait for more ...
return '';
}
// get the character that was split
charStr = this.charBuffer.slice(0, this.charLength).toString(this.encoding);
// lead surrogate (D800-DBFF) is also the incomplete character
var charCode = charStr.charCodeAt(charStr.length - 1);
if (charCode >= 0xD800 && charCode <= 0xDBFF) {
this.charLength += this.surrogateSize;
charStr = '';
continue;
}
this.charReceived = this.charLength = 0;
// if there are no more bytes in this buffer, just emit our char
if (i == buffer.length) return charStr;
// otherwise cut off the characters end from the beginning of this buffer
buffer = buffer.slice(i, buffer.length);
break;
}
var lenIncomplete = this.detectIncompleteChar(buffer);
var end = buffer.length;
if (this.charLength) {
// buffer the incomplete character bytes we got
buffer.copy(this.charBuffer, 0, buffer.length - lenIncomplete, end);
this.charReceived = lenIncomplete;
end -= lenIncomplete;
}
charStr += buffer.toString(this.encoding, 0, end);
var end = charStr.length - 1;
var charCode = charStr.charCodeAt(end);
// lead surrogate (D800-DBFF) is also the incomplete character
if (charCode >= 0xD800 && charCode <= 0xDBFF) {
var size = this.surrogateSize;
this.charLength += size;
this.charReceived += size;
this.charBuffer.copy(this.charBuffer, size, 0, size);
this.charBuffer.write(charStr.charAt(charStr.length - 1), this.encoding);
return charStr.substring(0, end);
}
// or just emit the charStr
return charStr;
};
StringDecoder.prototype.detectIncompleteChar = function(buffer) {
// determine how many bytes we have to check at the end of this buffer
var i = (buffer.length >= 3) ? 3 : buffer.length;
// Figure out if one of the last i bytes of our buffer announces an
// incomplete char.
for (; i > 0; i--) {
var c = buffer[buffer.length - i];
// See http://en.wikipedia.org/wiki/UTF-8#Description
// 110XXXXX
if (i == 1 && c >> 5 == 0x06) {
this.charLength = 2;
break;
}
// 1110XXXX
if (i <= 2 && c >> 4 == 0x0E) {
this.charLength = 3;
break;
}
// 11110XXX
if (i <= 3 && c >> 3 == 0x1E) {
this.charLength = 4;
break;
}
}
return i;
};
StringDecoder.prototype.end = function(buffer) {
var res = '';
if (buffer && buffer.length)
res = this.write(buffer);
if (this.charReceived) {
var cr = this.charReceived;
var buf = this.charBuffer;
var enc = this.encoding;
res += buf.slice(0, cr).toString(enc);
}
return res;
};
function passThroughWrite(buffer) {
return buffer.toString(this.encoding);
}
function utf16DetectIncompleteChar(buffer) {
var incomplete = this.charReceived = buffer.length % 2;
this.charLength = incomplete ? 2 : 0;
return incomplete;
}
function base64DetectIncompleteChar(buffer) {
var incomplete = this.charReceived = buffer.length % 3;
this.charLength = incomplete ? 3 : 0;
return incomplete;
}
},{"buffer":7}],18:[function(require,module,exports){
exports.read = function (buffer, offset, isLE, mLen, nBytes) {
var e, m
var eLen = (nBytes * 8) - mLen - 1
var eMax = (1 << eLen) - 1
var eBias = eMax >> 1
var nBits = -7
var i = isLE ? (nBytes - 1) : 0
var d = isLE ? -1 : 1
var s = buffer[offset + i]
i += d
e = s & ((1 << (-nBits)) - 1)
s >>= (-nBits)
nBits += eLen
for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {}
m = e & ((1 << (-nBits)) - 1)
e >>= (-nBits)
nBits += mLen
for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {}
if (e === 0) {
e = 1 - eBias
} else if (e === eMax) {
return m ? NaN : ((s ? -1 : 1) * Infinity)
} else {
m = m + Math.pow(2, mLen)
e = e - eBias
}
return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
}
exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
var e, m, c
var eLen = (nBytes * 8) - mLen - 1
var eMax = (1 << eLen) - 1
var eBias = eMax >> 1
var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
var i = isLE ? 0 : (nBytes - 1)
var d = isLE ? 1 : -1
var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0
value = Math.abs(value)
if (isNaN(value) || value === Infinity) {
m = isNaN(value) ? 1 : 0
e = eMax
} else {
e = Math.floor(Math.log(value) / Math.LN2)
if (value * (c = Math.pow(2, -e)) < 1) {
e--
c *= 2
}
if (e + eBias >= 1) {
value += rt / c
} else {
value += rt * Math.pow(2, 1 - eBias)
}
if (value * c >= 2) {
e++
c /= 2
}
if (e + eBias >= eMax) {
m = 0
e = eMax
} else if (e + eBias >= 1) {
m = ((value * c) - 1) * Math.pow(2, mLen)
e = e + eBias
} else {
m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
e = 0
}
}
for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
e = (e << mLen) | m
eLen += mLen
for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}
buffer[offset + i - d] |= s * 128
}
},{}],19:[function(require,module,exports){
module.exports=require(3)
},{}],20:[function(require,module,exports){
'use strict';
var assert = require('assert');
var stream = require('stream');
var hash = require('../index');
describe('writeToStream', function() {
it('should emit information about an object to a stream', function() {
var strm = new stream.PassThrough();
hash.writeToStream({foo: 'bar'}, strm);
var result = strm.read().toString();
assert.strictEqual(typeof result, 'string');
assert.notStrictEqual(result.indexOf('foo'), -1);
assert.notStrictEqual(result.indexOf('bar'), -1);
});
it('should leave out keys when excludeValues = true', function() {
var strm = new stream.PassThrough();
hash.writeToStream({foo: 'bar'}, {excludeValues: true}, strm);
var result = strm.read().toString();
assert.strictEqual(typeof result, 'string');
assert.notStrictEqual(result.indexOf('foo'), -1);
assert. strictEqual(result.indexOf('bar'), -1);
});
});
},{"../index":1,"assert":2,"stream":11}]},{},[20])
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