pm-controls
Version:
ProModel Controls
1,791 lines (1,583 loc) • 6.35 MB
JavaScript
webpackJsonp(["vendor"],{
/***/ "../../../../base64-js/index.js":
/***/ (function(module, exports, __webpack_require__) {
"use strict";
exports.byteLength = byteLength
exports.toByteArray = toByteArray
exports.fromByteArray = fromByteArray
var lookup = []
var revLookup = []
var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array
var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
for (var i = 0, len = code.length; i < len; ++i) {
lookup[i] = code[i]
revLookup[code.charCodeAt(i)] = i
}
revLookup['-'.charCodeAt(0)] = 62
revLookup['_'.charCodeAt(0)] = 63
function placeHoldersCount (b64) {
var len = b64.length
if (len % 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
return b64[len - 2] === '=' ? 2 : b64[len - 1] === '=' ? 1 : 0
}
function byteLength (b64) {
// base64 is 4/3 + up to two characters of the original data
return (b64.length * 3 / 4) - placeHoldersCount(b64)
}
function toByteArray (b64) {
var i, l, tmp, placeHolders, arr
var len = b64.length
placeHolders = placeHoldersCount(b64)
arr = new Arr((len * 3 / 4) - placeHolders)
// if there are placeholders, only get up to the last complete 4 chars
l = placeHolders > 0 ? len - 4 : len
var L = 0
for (i = 0; i < l; i += 4) {
tmp = (revLookup[b64.charCodeAt(i)] << 18) | (revLookup[b64.charCodeAt(i + 1)] << 12) | (revLookup[b64.charCodeAt(i + 2)] << 6) | revLookup[b64.charCodeAt(i + 3)]
arr[L++] = (tmp >> 16) & 0xFF
arr[L++] = (tmp >> 8) & 0xFF
arr[L++] = tmp & 0xFF
}
if (placeHolders === 2) {
tmp = (revLookup[b64.charCodeAt(i)] << 2) | (revLookup[b64.charCodeAt(i + 1)] >> 4)
arr[L++] = tmp & 0xFF
} else if (placeHolders === 1) {
tmp = (revLookup[b64.charCodeAt(i)] << 10) | (revLookup[b64.charCodeAt(i + 1)] << 4) | (revLookup[b64.charCodeAt(i + 2)] >> 2)
arr[L++] = (tmp >> 8) & 0xFF
arr[L++] = tmp & 0xFF
}
return arr
}
function tripletToBase64 (num) {
return lookup[num >> 18 & 0x3F] + lookup[num >> 12 & 0x3F] + lookup[num >> 6 & 0x3F] + lookup[num & 0x3F]
}
function encodeChunk (uint8, start, end) {
var tmp
var output = []
for (var i = start; i < end; i += 3) {
tmp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
output.push(tripletToBase64(tmp))
}
return output.join('')
}
function fromByteArray (uint8) {
var tmp
var len = uint8.length
var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes
var output = ''
var parts = []
var maxChunkLength = 16383 // must be multiple of 3
// go through the array every three bytes, we'll deal with trailing stuff later
for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
}
// pad the end with zeros, but make sure to not forget the extra bytes
if (extraBytes === 1) {
tmp = uint8[len - 1]
output += lookup[tmp >> 2]
output += lookup[(tmp << 4) & 0x3F]
output += '=='
} else if (extraBytes === 2) {
tmp = (uint8[len - 2] << 8) + (uint8[len - 1])
output += lookup[tmp >> 10]
output += lookup[(tmp >> 4) & 0x3F]
output += lookup[(tmp << 2) & 0x3F]
output += '='
}
parts.push(output)
return parts.join('')
}
/***/ }),
/***/ "../../../../bowser/src/bowser.js":
/***/ (function(module, exports, __webpack_require__) {
/*!
* Bowser - a browser detector
* https://github.com/ded/bowser
* MIT License | (c) Dustin Diaz 2015
*/
!function (root, name, definition) {
if (typeof module != 'undefined' && module.exports) module.exports = definition()
else if (true) __webpack_require__("../../node_modules/webpack/buildin/amd-define.js")(name, definition)
else root[name] = definition()
}(this, 'bowser', function () {
/**
* See useragents.js for examples of navigator.userAgent
*/
var t = true
function detect(ua) {
function getFirstMatch(regex) {
var match = ua.match(regex);
return (match && match.length > 1 && match[1]) || '';
}
function getSecondMatch(regex) {
var match = ua.match(regex);
return (match && match.length > 1 && match[2]) || '';
}
var iosdevice = getFirstMatch(/(ipod|iphone|ipad)/i).toLowerCase()
, likeAndroid = /like android/i.test(ua)
, android = !likeAndroid && /android/i.test(ua)
, nexusMobile = /nexus\s*[0-6]\s*/i.test(ua)
, nexusTablet = !nexusMobile && /nexus\s*[0-9]+/i.test(ua)
, chromeos = /CrOS/.test(ua)
, silk = /silk/i.test(ua)
, sailfish = /sailfish/i.test(ua)
, tizen = /tizen/i.test(ua)
, webos = /(web|hpw)os/i.test(ua)
, windowsphone = /windows phone/i.test(ua)
, samsungBrowser = /SamsungBrowser/i.test(ua)
, windows = !windowsphone && /windows/i.test(ua)
, mac = !iosdevice && !silk && /macintosh/i.test(ua)
, linux = !android && !sailfish && !tizen && !webos && /linux/i.test(ua)
, edgeVersion = getSecondMatch(/edg([ea]|ios)\/(\d+(\.\d+)?)/i)
, versionIdentifier = getFirstMatch(/version\/(\d+(\.\d+)?)/i)
, tablet = /tablet/i.test(ua) && !/tablet pc/i.test(ua)
, mobile = !tablet && /[^-]mobi/i.test(ua)
, xbox = /xbox/i.test(ua)
, result
if (/opera/i.test(ua)) {
// an old Opera
result = {
name: 'Opera'
, opera: t
, version: versionIdentifier || getFirstMatch(/(?:opera|opr|opios)[\s\/](\d+(\.\d+)?)/i)
}
} else if (/opr\/|opios/i.test(ua)) {
// a new Opera
result = {
name: 'Opera'
, opera: t
, version: getFirstMatch(/(?:opr|opios)[\s\/](\d+(\.\d+)?)/i) || versionIdentifier
}
}
else if (/SamsungBrowser/i.test(ua)) {
result = {
name: 'Samsung Internet for Android'
, samsungBrowser: t
, version: versionIdentifier || getFirstMatch(/(?:SamsungBrowser)[\s\/](\d+(\.\d+)?)/i)
}
}
else if (/coast/i.test(ua)) {
result = {
name: 'Opera Coast'
, coast: t
, version: versionIdentifier || getFirstMatch(/(?:coast)[\s\/](\d+(\.\d+)?)/i)
}
}
else if (/yabrowser/i.test(ua)) {
result = {
name: 'Yandex Browser'
, yandexbrowser: t
, version: versionIdentifier || getFirstMatch(/(?:yabrowser)[\s\/](\d+(\.\d+)?)/i)
}
}
else if (/ucbrowser/i.test(ua)) {
result = {
name: 'UC Browser'
, ucbrowser: t
, version: getFirstMatch(/(?:ucbrowser)[\s\/](\d+(?:\.\d+)+)/i)
}
}
else if (/mxios/i.test(ua)) {
result = {
name: 'Maxthon'
, maxthon: t
, version: getFirstMatch(/(?:mxios)[\s\/](\d+(?:\.\d+)+)/i)
}
}
else if (/epiphany/i.test(ua)) {
result = {
name: 'Epiphany'
, epiphany: t
, version: getFirstMatch(/(?:epiphany)[\s\/](\d+(?:\.\d+)+)/i)
}
}
else if (/puffin/i.test(ua)) {
result = {
name: 'Puffin'
, puffin: t
, version: getFirstMatch(/(?:puffin)[\s\/](\d+(?:\.\d+)?)/i)
}
}
else if (/sleipnir/i.test(ua)) {
result = {
name: 'Sleipnir'
, sleipnir: t
, version: getFirstMatch(/(?:sleipnir)[\s\/](\d+(?:\.\d+)+)/i)
}
}
else if (/k-meleon/i.test(ua)) {
result = {
name: 'K-Meleon'
, kMeleon: t
, version: getFirstMatch(/(?:k-meleon)[\s\/](\d+(?:\.\d+)+)/i)
}
}
else if (windowsphone) {
result = {
name: 'Windows Phone'
, osname: 'Windows Phone'
, windowsphone: t
}
if (edgeVersion) {
result.msedge = t
result.version = edgeVersion
}
else {
result.msie = t
result.version = getFirstMatch(/iemobile\/(\d+(\.\d+)?)/i)
}
}
else if (/msie|trident/i.test(ua)) {
result = {
name: 'Internet Explorer'
, msie: t
, version: getFirstMatch(/(?:msie |rv:)(\d+(\.\d+)?)/i)
}
} else if (chromeos) {
result = {
name: 'Chrome'
, osname: 'Chrome OS'
, chromeos: t
, chromeBook: t
, chrome: t
, version: getFirstMatch(/(?:chrome|crios|crmo)\/(\d+(\.\d+)?)/i)
}
} else if (/edg([ea]|ios)/i.test(ua)) {
result = {
name: 'Microsoft Edge'
, msedge: t
, version: edgeVersion
}
}
else if (/vivaldi/i.test(ua)) {
result = {
name: 'Vivaldi'
, vivaldi: t
, version: getFirstMatch(/vivaldi\/(\d+(\.\d+)?)/i) || versionIdentifier
}
}
else if (sailfish) {
result = {
name: 'Sailfish'
, osname: 'Sailfish OS'
, sailfish: t
, version: getFirstMatch(/sailfish\s?browser\/(\d+(\.\d+)?)/i)
}
}
else if (/seamonkey\//i.test(ua)) {
result = {
name: 'SeaMonkey'
, seamonkey: t
, version: getFirstMatch(/seamonkey\/(\d+(\.\d+)?)/i)
}
}
else if (/firefox|iceweasel|fxios/i.test(ua)) {
result = {
name: 'Firefox'
, firefox: t
, version: getFirstMatch(/(?:firefox|iceweasel|fxios)[ \/](\d+(\.\d+)?)/i)
}
if (/\((mobile|tablet);[^\)]*rv:[\d\.]+\)/i.test(ua)) {
result.firefoxos = t
result.osname = 'Firefox OS'
}
}
else if (silk) {
result = {
name: 'Amazon Silk'
, silk: t
, version : getFirstMatch(/silk\/(\d+(\.\d+)?)/i)
}
}
else if (/phantom/i.test(ua)) {
result = {
name: 'PhantomJS'
, phantom: t
, version: getFirstMatch(/phantomjs\/(\d+(\.\d+)?)/i)
}
}
else if (/slimerjs/i.test(ua)) {
result = {
name: 'SlimerJS'
, slimer: t
, version: getFirstMatch(/slimerjs\/(\d+(\.\d+)?)/i)
}
}
else if (/blackberry|\bbb\d+/i.test(ua) || /rim\stablet/i.test(ua)) {
result = {
name: 'BlackBerry'
, osname: 'BlackBerry OS'
, blackberry: t
, version: versionIdentifier || getFirstMatch(/blackberry[\d]+\/(\d+(\.\d+)?)/i)
}
}
else if (webos) {
result = {
name: 'WebOS'
, osname: 'WebOS'
, webos: t
, version: versionIdentifier || getFirstMatch(/w(?:eb)?osbrowser\/(\d+(\.\d+)?)/i)
};
/touchpad\//i.test(ua) && (result.touchpad = t)
}
else if (/bada/i.test(ua)) {
result = {
name: 'Bada'
, osname: 'Bada'
, bada: t
, version: getFirstMatch(/dolfin\/(\d+(\.\d+)?)/i)
};
}
else if (tizen) {
result = {
name: 'Tizen'
, osname: 'Tizen'
, tizen: t
, version: getFirstMatch(/(?:tizen\s?)?browser\/(\d+(\.\d+)?)/i) || versionIdentifier
};
}
else if (/qupzilla/i.test(ua)) {
result = {
name: 'QupZilla'
, qupzilla: t
, version: getFirstMatch(/(?:qupzilla)[\s\/](\d+(?:\.\d+)+)/i) || versionIdentifier
}
}
else if (/chromium/i.test(ua)) {
result = {
name: 'Chromium'
, chromium: t
, version: getFirstMatch(/(?:chromium)[\s\/](\d+(?:\.\d+)?)/i) || versionIdentifier
}
}
else if (/chrome|crios|crmo/i.test(ua)) {
result = {
name: 'Chrome'
, chrome: t
, version: getFirstMatch(/(?:chrome|crios|crmo)\/(\d+(\.\d+)?)/i)
}
}
else if (android) {
result = {
name: 'Android'
, version: versionIdentifier
}
}
else if (/safari|applewebkit/i.test(ua)) {
result = {
name: 'Safari'
, safari: t
}
if (versionIdentifier) {
result.version = versionIdentifier
}
}
else if (iosdevice) {
result = {
name : iosdevice == 'iphone' ? 'iPhone' : iosdevice == 'ipad' ? 'iPad' : 'iPod'
}
// WTF: version is not part of user agent in web apps
if (versionIdentifier) {
result.version = versionIdentifier
}
}
else if(/googlebot/i.test(ua)) {
result = {
name: 'Googlebot'
, googlebot: t
, version: getFirstMatch(/googlebot\/(\d+(\.\d+))/i) || versionIdentifier
}
}
else {
result = {
name: getFirstMatch(/^(.*)\/(.*) /),
version: getSecondMatch(/^(.*)\/(.*) /)
};
}
// set webkit or gecko flag for browsers based on these engines
if (!result.msedge && /(apple)?webkit/i.test(ua)) {
if (/(apple)?webkit\/537\.36/i.test(ua)) {
result.name = result.name || "Blink"
result.blink = t
} else {
result.name = result.name || "Webkit"
result.webkit = t
}
if (!result.version && versionIdentifier) {
result.version = versionIdentifier
}
} else if (!result.opera && /gecko\//i.test(ua)) {
result.name = result.name || "Gecko"
result.gecko = t
result.version = result.version || getFirstMatch(/gecko\/(\d+(\.\d+)?)/i)
}
// set OS flags for platforms that have multiple browsers
if (!result.windowsphone && (android || result.silk)) {
result.android = t
result.osname = 'Android'
} else if (!result.windowsphone && iosdevice) {
result[iosdevice] = t
result.ios = t
result.osname = 'iOS'
} else if (mac) {
result.mac = t
result.osname = 'macOS'
} else if (xbox) {
result.xbox = t
result.osname = 'Xbox'
} else if (windows) {
result.windows = t
result.osname = 'Windows'
} else if (linux) {
result.linux = t
result.osname = 'Linux'
}
function getWindowsVersion (s) {
switch (s) {
case 'NT': return 'NT'
case 'XP': return 'XP'
case 'NT 5.0': return '2000'
case 'NT 5.1': return 'XP'
case 'NT 5.2': return '2003'
case 'NT 6.0': return 'Vista'
case 'NT 6.1': return '7'
case 'NT 6.2': return '8'
case 'NT 6.3': return '8.1'
case 'NT 10.0': return '10'
default: return undefined
}
}
// OS version extraction
var osVersion = '';
if (result.windows) {
osVersion = getWindowsVersion(getFirstMatch(/Windows ((NT|XP)( \d\d?.\d)?)/i))
} else if (result.windowsphone) {
osVersion = getFirstMatch(/windows phone (?:os)?\s?(\d+(\.\d+)*)/i);
} else if (result.mac) {
osVersion = getFirstMatch(/Mac OS X (\d+([_\.\s]\d+)*)/i);
osVersion = osVersion.replace(/[_\s]/g, '.');
} else if (iosdevice) {
osVersion = getFirstMatch(/os (\d+([_\s]\d+)*) like mac os x/i);
osVersion = osVersion.replace(/[_\s]/g, '.');
} else if (android) {
osVersion = getFirstMatch(/android[ \/-](\d+(\.\d+)*)/i);
} else if (result.webos) {
osVersion = getFirstMatch(/(?:web|hpw)os\/(\d+(\.\d+)*)/i);
} else if (result.blackberry) {
osVersion = getFirstMatch(/rim\stablet\sos\s(\d+(\.\d+)*)/i);
} else if (result.bada) {
osVersion = getFirstMatch(/bada\/(\d+(\.\d+)*)/i);
} else if (result.tizen) {
osVersion = getFirstMatch(/tizen[\/\s](\d+(\.\d+)*)/i);
}
if (osVersion) {
result.osversion = osVersion;
}
// device type extraction
var osMajorVersion = !result.windows && osVersion.split('.')[0];
if (
tablet
|| nexusTablet
|| iosdevice == 'ipad'
|| (android && (osMajorVersion == 3 || (osMajorVersion >= 4 && !mobile)))
|| result.silk
) {
result.tablet = t
} else if (
mobile
|| iosdevice == 'iphone'
|| iosdevice == 'ipod'
|| android
|| nexusMobile
|| result.blackberry
|| result.webos
|| result.bada
) {
result.mobile = t
}
// Graded Browser Support
// http://developer.yahoo.com/yui/articles/gbs
if (result.msedge ||
(result.msie && result.version >= 10) ||
(result.yandexbrowser && result.version >= 15) ||
(result.vivaldi && result.version >= 1.0) ||
(result.chrome && result.version >= 20) ||
(result.samsungBrowser && result.version >= 4) ||
(result.firefox && result.version >= 20.0) ||
(result.safari && result.version >= 6) ||
(result.opera && result.version >= 10.0) ||
(result.ios && result.osversion && result.osversion.split(".")[0] >= 6) ||
(result.blackberry && result.version >= 10.1)
|| (result.chromium && result.version >= 20)
) {
result.a = t;
}
else if ((result.msie && result.version < 10) ||
(result.chrome && result.version < 20) ||
(result.firefox && result.version < 20.0) ||
(result.safari && result.version < 6) ||
(result.opera && result.version < 10.0) ||
(result.ios && result.osversion && result.osversion.split(".")[0] < 6)
|| (result.chromium && result.version < 20)
) {
result.c = t
} else result.x = t
return result
}
var bowser = detect(typeof navigator !== 'undefined' ? navigator.userAgent || '' : '')
bowser.test = function (browserList) {
for (var i = 0; i < browserList.length; ++i) {
var browserItem = browserList[i];
if (typeof browserItem=== 'string') {
if (browserItem in bowser) {
return true;
}
}
}
return false;
}
/**
* Get version precisions count
*
* @example
* getVersionPrecision("1.10.3") // 3
*
* @param {string} version
* @return {number}
*/
function getVersionPrecision(version) {
return version.split(".").length;
}
/**
* Array::map polyfill
*
* @param {Array} arr
* @param {Function} iterator
* @return {Array}
*/
function map(arr, iterator) {
var result = [], i;
if (Array.prototype.map) {
return Array.prototype.map.call(arr, iterator);
}
for (i = 0; i < arr.length; i++) {
result.push(iterator(arr[i]));
}
return result;
}
/**
* Calculate browser version weight
*
* @example
* compareVersions(['1.10.2.1', '1.8.2.1.90']) // 1
* compareVersions(['1.010.2.1', '1.09.2.1.90']); // 1
* compareVersions(['1.10.2.1', '1.10.2.1']); // 0
* compareVersions(['1.10.2.1', '1.0800.2']); // -1
*
* @param {Array<String>} versions versions to compare
* @return {Number} comparison result
*/
function compareVersions(versions) {
// 1) get common precision for both versions, for example for "10.0" and "9" it should be 2
var precision = Math.max(getVersionPrecision(versions[0]), getVersionPrecision(versions[1]));
var chunks = map(versions, function (version) {
var delta = precision - getVersionPrecision(version);
// 2) "9" -> "9.0" (for precision = 2)
version = version + new Array(delta + 1).join(".0");
// 3) "9.0" -> ["000000000"", "000000009"]
return map(version.split("."), function (chunk) {
return new Array(20 - chunk.length).join("0") + chunk;
}).reverse();
});
// iterate in reverse order by reversed chunks array
while (--precision >= 0) {
// 4) compare: "000000009" > "000000010" = false (but "9" > "10" = true)
if (chunks[0][precision] > chunks[1][precision]) {
return 1;
}
else if (chunks[0][precision] === chunks[1][precision]) {
if (precision === 0) {
// all version chunks are same
return 0;
}
}
else {
return -1;
}
}
}
/**
* Check if browser is unsupported
*
* @example
* bowser.isUnsupportedBrowser({
* msie: "10",
* firefox: "23",
* chrome: "29",
* safari: "5.1",
* opera: "16",
* phantom: "534"
* });
*
* @param {Object} minVersions map of minimal version to browser
* @param {Boolean} [strictMode = false] flag to return false if browser wasn't found in map
* @param {String} [ua] user agent string
* @return {Boolean}
*/
function isUnsupportedBrowser(minVersions, strictMode, ua) {
var _bowser = bowser;
// make strictMode param optional with ua param usage
if (typeof strictMode === 'string') {
ua = strictMode;
strictMode = void(0);
}
if (strictMode === void(0)) {
strictMode = false;
}
if (ua) {
_bowser = detect(ua);
}
var version = "" + _bowser.version;
for (var browser in minVersions) {
if (minVersions.hasOwnProperty(browser)) {
if (_bowser[browser]) {
if (typeof minVersions[browser] !== 'string') {
throw new Error('Browser version in the minVersion map should be a string: ' + browser + ': ' + String(minVersions));
}
// browser version and min supported version.
return compareVersions([version, minVersions[browser]]) < 0;
}
}
}
return strictMode; // not found
}
/**
* Check if browser is supported
*
* @param {Object} minVersions map of minimal version to browser
* @param {Boolean} [strictMode = false] flag to return false if browser wasn't found in map
* @param {String} [ua] user agent string
* @return {Boolean}
*/
function check(minVersions, strictMode, ua) {
return !isUnsupportedBrowser(minVersions, strictMode, ua);
}
bowser.isUnsupportedBrowser = isUnsupportedBrowser;
bowser.compareVersions = compareVersions;
bowser.check = check;
/*
* Set our detect method to the main bowser object so we can
* reuse it to test other user agents.
* This is needed to implement future tests.
*/
bowser._detect = detect;
/*
* Set our detect public method to the main bowser object
* This is needed to implement bowser in server side
*/
bowser.detect = detect;
return bowser
});
/***/ }),
/***/ "../../../../buffer/index.js":
/***/ (function(module, exports, __webpack_require__) {
"use strict";
/* WEBPACK VAR INJECTION */(function(global) {/*!
* The buffer module from node.js, for the browser.
*
* @author Feross Aboukhadijeh <feross@feross.org> <http://feross.org>
* @license MIT
*/
/* eslint-disable no-proto */
var base64 = __webpack_require__("../../../../base64-js/index.js")
var ieee754 = __webpack_require__("../../../../ieee754/index.js")
var isArray = __webpack_require__("../../../../buffer/node_modules/isarray/index.js")
exports.Buffer = Buffer
exports.SlowBuffer = SlowBuffer
exports.INSPECT_MAX_BYTES = 50
/**
* If `Buffer.TYPED_ARRAY_SUPPORT`:
* === true Use Uint8Array implementation (fastest)
* === false Use Object implementation (most compatible, even IE6)
*
* Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+,
* Opera 11.6+, iOS 4.2+.
*
* Due to various browser bugs, sometimes the Object implementation will be used even
* when the browser supports typed arrays.
*
* Note:
*
* - Firefox 4-29 lacks support for adding new properties to `Uint8Array` instances,
* See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438.
*
* - Chrome 9-10 is missing the `TypedArray.prototype.subarray` function.
*
* - IE10 has a broken `TypedArray.prototype.subarray` function which returns arrays of
* incorrect length in some situations.
* We detect these buggy browsers and set `Buffer.TYPED_ARRAY_SUPPORT` to `false` so they
* get the Object implementation, which is slower but behaves correctly.
*/
Buffer.TYPED_ARRAY_SUPPORT = global.TYPED_ARRAY_SUPPORT !== undefined
? global.TYPED_ARRAY_SUPPORT
: typedArraySupport()
/*
* Export kMaxLength after typed array support is determined.
*/
exports.kMaxLength = kMaxLength()
function typedArraySupport () {
try {
var arr = new Uint8Array(1)
arr.__proto__ = {__proto__: Uint8Array.prototype, foo: function () { return 42 }}
return arr.foo() === 42 && // typed array instances can be augmented
typeof arr.subarray === 'function' && // chrome 9-10 lack `subarray`
arr.subarray(1, 1).byteLength === 0 // ie10 has broken `subarray`
} catch (e) {
return false
}
}
function kMaxLength () {
return Buffer.TYPED_ARRAY_SUPPORT
? 0x7fffffff
: 0x3fffffff
}
function createBuffer (that, length) {
if (kMaxLength() < length) {
throw new RangeError('Invalid typed array length')
}
if (Buffer.TYPED_ARRAY_SUPPORT) {
// Return an augmented `Uint8Array` instance, for best performance
that = new Uint8Array(length)
that.__proto__ = Buffer.prototype
} else {
// Fallback: Return an object instance of the Buffer class
if (that === null) {
that = new Buffer(length)
}
that.length = length
}
return that
}
/**
* The Buffer constructor returns instances of `Uint8Array` that have their
* prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of
* `Uint8Array`, so the returned instances will have all the node `Buffer` methods
* and the `Uint8Array` methods. Square bracket notation works as expected -- it
* returns a single octet.
*
* The `Uint8Array` prototype remains unmodified.
*/
function Buffer (arg, encodingOrOffset, length) {
if (!Buffer.TYPED_ARRAY_SUPPORT && !(this instanceof Buffer)) {
return new Buffer(arg, encodingOrOffset, length)
}
// Common case.
if (typeof arg === 'number') {
if (typeof encodingOrOffset === 'string') {
throw new Error(
'If encoding is specified then the first argument must be a string'
)
}
return allocUnsafe(this, arg)
}
return from(this, arg, encodingOrOffset, length)
}
Buffer.poolSize = 8192 // not used by this implementation
// TODO: Legacy, not needed anymore. Remove in next major version.
Buffer._augment = function (arr) {
arr.__proto__ = Buffer.prototype
return arr
}
function from (that, value, encodingOrOffset, length) {
if (typeof value === 'number') {
throw new TypeError('"value" argument must not be a number')
}
if (typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer) {
return fromArrayBuffer(that, value, encodingOrOffset, length)
}
if (typeof value === 'string') {
return fromString(that, value, encodingOrOffset)
}
return fromObject(that, value)
}
/**
* Functionally equivalent to Buffer(arg, encoding) but throws a TypeError
* if value is a number.
* Buffer.from(str[, encoding])
* Buffer.from(array)
* Buffer.from(buffer)
* Buffer.from(arrayBuffer[, byteOffset[, length]])
**/
Buffer.from = function (value, encodingOrOffset, length) {
return from(null, value, encodingOrOffset, length)
}
if (Buffer.TYPED_ARRAY_SUPPORT) {
Buffer.prototype.__proto__ = Uint8Array.prototype
Buffer.__proto__ = Uint8Array
if (typeof Symbol !== 'undefined' && Symbol.species &&
Buffer[Symbol.species] === Buffer) {
// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97
Object.defineProperty(Buffer, Symbol.species, {
value: null,
configurable: true
})
}
}
function assertSize (size) {
if (typeof size !== 'number') {
throw new TypeError('"size" argument must be a number')
} else if (size < 0) {
throw new RangeError('"size" argument must not be negative')
}
}
function alloc (that, size, fill, encoding) {
assertSize(size)
if (size <= 0) {
return createBuffer(that, size)
}
if (fill !== undefined) {
// Only pay attention to encoding if it's a string. This
// prevents accidentally sending in a number that would
// be interpretted as a start offset.
return typeof encoding === 'string'
? createBuffer(that, size).fill(fill, encoding)
: createBuffer(that, size).fill(fill)
}
return createBuffer(that, size)
}
/**
* Creates a new filled Buffer instance.
* alloc(size[, fill[, encoding]])
**/
Buffer.alloc = function (size, fill, encoding) {
return alloc(null, size, fill, encoding)
}
function allocUnsafe (that, size) {
assertSize(size)
that = createBuffer(that, size < 0 ? 0 : checked(size) | 0)
if (!Buffer.TYPED_ARRAY_SUPPORT) {
for (var i = 0; i < size; ++i) {
that[i] = 0
}
}
return that
}
/**
* Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance.
* */
Buffer.allocUnsafe = function (size) {
return allocUnsafe(null, size)
}
/**
* Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance.
*/
Buffer.allocUnsafeSlow = function (size) {
return allocUnsafe(null, size)
}
function fromString (that, string, encoding) {
if (typeof encoding !== 'string' || encoding === '') {
encoding = 'utf8'
}
if (!Buffer.isEncoding(encoding)) {
throw new TypeError('"encoding" must be a valid string encoding')
}
var length = byteLength(string, encoding) | 0
that = createBuffer(that, length)
var actual = that.write(string, encoding)
if (actual !== length) {
// Writing a hex string, for example, that contains invalid characters will
// cause everything after the first invalid character to be ignored. (e.g.
// 'abxxcd' will be treated as 'ab')
that = that.slice(0, actual)
}
return that
}
function fromArrayLike (that, array) {
var length = array.length < 0 ? 0 : checked(array.length) | 0
that = createBuffer(that, length)
for (var i = 0; i < length; i += 1) {
that[i] = array[i] & 255
}
return that
}
function fromArrayBuffer (that, array, byteOffset, length) {
array.byteLength // this throws if `array` is not a valid ArrayBuffer
if (byteOffset < 0 || array.byteLength < byteOffset) {
throw new RangeError('\'offset\' is out of bounds')
}
if (array.byteLength < byteOffset + (length || 0)) {
throw new RangeError('\'length\' is out of bounds')
}
if (byteOffset === undefined && length === undefined) {
array = new Uint8Array(array)
} else if (length === undefined) {
array = new Uint8Array(array, byteOffset)
} else {
array = new Uint8Array(array, byteOffset, length)
}
if (Buffer.TYPED_ARRAY_SUPPORT) {
// Return an augmented `Uint8Array` instance, for best performance
that = array
that.__proto__ = Buffer.prototype
} else {
// Fallback: Return an object instance of the Buffer class
that = fromArrayLike(that, array)
}
return that
}
function fromObject (that, obj) {
if (Buffer.isBuffer(obj)) {
var len = checked(obj.length) | 0
that = createBuffer(that, len)
if (that.length === 0) {
return that
}
obj.copy(that, 0, 0, len)
return that
}
if (obj) {
if ((typeof ArrayBuffer !== 'undefined' &&
obj.buffer instanceof ArrayBuffer) || 'length' in obj) {
if (typeof obj.length !== 'number' || isnan(obj.length)) {
return createBuffer(that, 0)
}
return fromArrayLike(that, obj)
}
if (obj.type === 'Buffer' && isArray(obj.data)) {
return fromArrayLike(that, obj.data)
}
}
throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.')
}
function checked (length) {
// Note: cannot use `length < kMaxLength()` here because that fails when
// length is NaN (which is otherwise coerced to zero.)
if (length >= kMaxLength()) {
throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
'size: 0x' + kMaxLength().toString(16) + ' bytes')
}
return length | 0
}
function SlowBuffer (length) {
if (+length != length) { // eslint-disable-line eqeqeq
length = 0
}
return Buffer.alloc(+length)
}
Buffer.isBuffer = function isBuffer (b) {
return !!(b != null && b._isBuffer)
}
Buffer.compare = function compare (a, b) {
if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
throw new TypeError('Arguments must be Buffers')
}
if (a === b) return 0
var x = a.length
var y = b.length
for (var i = 0, len = Math.min(x, y); i < len; ++i) {
if (a[i] !== b[i]) {
x = a[i]
y = b[i]
break
}
}
if (x < y) return -1
if (y < x) return 1
return 0
}
Buffer.isEncoding = function isEncoding (encoding) {
switch (String(encoding).toLowerCase()) {
case 'hex':
case 'utf8':
case 'utf-8':
case 'ascii':
case 'latin1':
case 'binary':
case 'base64':
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return true
default:
return false
}
}
Buffer.concat = function concat (list, length) {
if (!isArray(list)) {
throw new TypeError('"list" argument must be an Array of Buffers')
}
if (list.length === 0) {
return Buffer.alloc(0)
}
var i
if (length === undefined) {
length = 0
for (i = 0; i < list.length; ++i) {
length += list[i].length
}
}
var buffer = Buffer.allocUnsafe(length)
var pos = 0
for (i = 0; i < list.length; ++i) {
var buf = list[i]
if (!Buffer.isBuffer(buf)) {
throw new TypeError('"list" argument must be an Array of Buffers')
}
buf.copy(buffer, pos)
pos += buf.length
}
return buffer
}
function byteLength (string, encoding) {
if (Buffer.isBuffer(string)) {
return string.length
}
if (typeof ArrayBuffer !== 'undefined' && typeof ArrayBuffer.isView === 'function' &&
(ArrayBuffer.isView(string) || string instanceof ArrayBuffer)) {
return string.byteLength
}
if (typeof string !== 'string') {
string = '' + string
}
var len = string.length
if (len === 0) return 0
// Use a for loop to avoid recursion
var loweredCase = false
for (;;) {
switch (encoding) {
case 'ascii':
case 'latin1':
case 'binary':
return len
case 'utf8':
case 'utf-8':
case undefined:
return utf8ToBytes(string).length
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return len * 2
case 'hex':
return len >>> 1
case 'base64':
return base64ToBytes(string).length
default:
if (loweredCase) return utf8ToBytes(string).length // assume utf8
encoding = ('' + encoding).toLowerCase()
loweredCase = true
}
}
}
Buffer.byteLength = byteLength
function slowToString (encoding, start, end) {
var loweredCase = false
// No need to verify that "this.length <= MAX_UINT32" since it's a read-only
// property of a typed array.
// This behaves neither like String nor Uint8Array in that we set start/end
// to their upper/lower bounds if the value passed is out of range.
// undefined is handled specially as per ECMA-262 6th Edition,
// Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization.
if (start === undefined || start < 0) {
start = 0
}
// Return early if start > this.length. Done here to prevent potential uint32
// coercion fail below.
if (start > this.length) {
return ''
}
if (end === undefined || end > this.length) {
end = this.length
}
if (end <= 0) {
return ''
}
// Force coersion to uint32. This will also coerce falsey/NaN values to 0.
end >>>= 0
start >>>= 0
if (end <= start) {
return ''
}
if (!encoding) encoding = 'utf8'
while (true) {
switch (encoding) {
case 'hex':
return hexSlice(this, start, end)
case 'utf8':
case 'utf-8':
return utf8Slice(this, start, end)
case 'ascii':
return asciiSlice(this, start, end)
case 'latin1':
case 'binary':
return latin1Slice(this, start, end)
case 'base64':
return base64Slice(this, start, end)
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return utf16leSlice(this, start, end)
default:
if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
encoding = (encoding + '').toLowerCase()
loweredCase = true
}
}
}
// The property is used by `Buffer.isBuffer` and `is-buffer` (in Safari 5-7) to detect
// Buffer instances.
Buffer.prototype._isBuffer = true
function swap (b, n, m) {
var i = b[n]
b[n] = b[m]
b[m] = i
}
Buffer.prototype.swap16 = function swap16 () {
var len = this.length
if (len % 2 !== 0) {
throw new RangeError('Buffer size must be a multiple of 16-bits')
}
for (var i = 0; i < len; i += 2) {
swap(this, i, i + 1)
}
return this
}
Buffer.prototype.swap32 = function swap32 () {
var len = this.length
if (len % 4 !== 0) {
throw new RangeError('Buffer size must be a multiple of 32-bits')
}
for (var i = 0; i < len; i += 4) {
swap(this, i, i + 3)
swap(this, i + 1, i + 2)
}
return this
}
Buffer.prototype.swap64 = function swap64 () {
var len = this.length
if (len % 8 !== 0) {
throw new RangeError('Buffer size must be a multiple of 64-bits')
}
for (var i = 0; i < len; i += 8) {
swap(this, i, i + 7)
swap(this, i + 1, i + 6)
swap(this, i + 2, i + 5)
swap(this, i + 3, i + 4)
}
return this
}
Buffer.prototype.toString = function toString () {
var length = this.length | 0
if (length === 0) return ''
if (arguments.length === 0) return utf8Slice(this, 0, length)
return slowToString.apply(this, arguments)
}
Buffer.prototype.equals = function equals (b) {
if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
if (this === b) return true
return Buffer.compare(this, b) === 0
}
Buffer.prototype.inspect = function inspect () {
var str = ''
var max = exports.INSPECT_MAX_BYTES
if (this.length > 0) {
str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')
if (this.length > max) str += ' ... '
}
return '<Buffer ' + str + '>'
}
Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
if (!Buffer.isBuffer(target)) {
throw new TypeError('Argument must be a Buffer')
}
if (start === undefined) {
start = 0
}
if (end === undefined) {
end = target ? target.length : 0
}
if (thisStart === undefined) {
thisStart = 0
}
if (thisEnd === undefined) {
thisEnd = this.length
}
if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
throw new RangeError('out of range index')
}
if (thisStart >= thisEnd && start >= end) {
return 0
}
if (thisStart >= thisEnd) {
return -1
}
if (start >= end) {
return 1
}
start >>>= 0
end >>>= 0
thisStart >>>= 0
thisEnd >>>= 0
if (this === target) return 0
var x = thisEnd - thisStart
var y = end - start
var len = Math.min(x, y)
var thisCopy = this.slice(thisStart, thisEnd)
var targetCopy = target.slice(start, end)
for (var i = 0; i < len; ++i) {
if (thisCopy[i] !== targetCopy[i]) {
x = thisCopy[i]
y = targetCopy[i]
break
}
}
if (x < y) return -1
if (y < x) return 1
return 0
}
// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`,
// OR the last index of `val` in `buffer` at offset <= `byteOffset`.
//
// Arguments:
// - buffer - a Buffer to search
// - val - a string, Buffer, or number
// - byteOffset - an index into `buffer`; will be clamped to an int32
// - encoding - an optional encoding, relevant is val is a string
// - dir - true for indexOf, false for lastIndexOf
function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
// Empty buffer means no match
if (buffer.length === 0) return -1
// Normalize byteOffset
if (typeof byteOffset === 'string') {
encoding = byteOffset
byteOffset = 0
} else if (byteOffset > 0x7fffffff) {
byteOffset = 0x7fffffff
} else if (byteOffset < -0x80000000) {
byteOffset = -0x80000000
}
byteOffset = +byteOffset // Coerce to Number.
if (isNaN(byteOffset)) {
// byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer
byteOffset = dir ? 0 : (buffer.length - 1)
}
// Normalize byteOffset: negative offsets start from the end of the buffer
if (byteOffset < 0) byteOffset = buffer.length + byteOffset
if (byteOffset >= buffer.length) {
if (dir) return -1
else byteOffset = buffer.length - 1
} else if (byteOffset < 0) {
if (dir) byteOffset = 0
else return -1
}
// Normalize val
if (typeof val === 'string') {
val = Buffer.from(val, encoding)
}
// Finally, search either indexOf (if dir is true) or lastIndexOf
if (Buffer.isBuffer(val)) {
// Special case: looking for empty string/buffer always fails
if (val.length === 0) {
return -1
}
return arrayIndexOf(buffer, val, byteOffset, encoding, dir)
} else if (typeof val === 'number') {
val = val & 0xFF // Search for a byte value [0-255]
if (Buffer.TYPED_ARRAY_SUPPORT &&
typeof Uint8Array.prototype.indexOf === 'function') {
if (dir) {
return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
} else {
return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)
}
}
return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)
}
throw new TypeError('val must be string, number or Buffer')
}
function arrayIndexOf (arr, val, byteOffset, encoding, dir) {
var indexSize = 1
var arrLength = arr.length
var valLength = val.length
if (encoding !== undefined) {
encoding = String(encoding).toLowerCase()
if (encoding === 'ucs2' || encoding === 'ucs-2' ||
encoding === 'utf16le' || encoding === 'utf-16le') {
if (arr.length < 2 || val.length < 2) {
return -1
}
indexSize = 2
arrLength /= 2
valLength /= 2
byteOffset /= 2
}
}
function read (buf, i) {
if (indexSize === 1) {
return buf[i]
} else {
return buf.readUInt16BE(i * indexSize)
}
}
var i
if (dir) {
var foundIndex = -1
for (i = byteOffset; i < arrLength; i++) {
if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
if (foundIndex === -1) foundIndex = i
if (i - foundIndex + 1 === valLength) return foundIndex * indexSize
} else {
if (foundIndex !== -1) i -= i - foundIndex
foundIndex = -1
}
}
} else {
if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength
for (i = byteOffset; i >= 0; i--) {
var found = true
for (var j = 0; j < valLength; j++) {
if (read(arr, i + j) !== read(val, j)) {
found = false
break
}
}
if (found) return i
}
}
return -1
}
Buffer.prototype.includes = function includes (val, byteOffset, encoding) {
return this.indexOf(val, byteOffset, encoding) !== -1
}
Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
return bidirectionalIndexOf(this, val, byteOffset, encoding, true)
}
Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
return bidirectionalIndexOf(this, val, byteOffset, encoding, false)
}
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
if (strLen % 2 !== 0) throw new TypeError('Invalid hex string')
if (length > strLen / 2) {
length = strLen / 2
}
for (var i = 0; i < length; ++i) {
var parsed = parseInt(string.substr(i * 2, 2), 16)
if (isNaN(parsed)) return i
buf[offset + i] = parsed
}
return i
}
function utf8Write (buf, string, offset, length) {
return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
}
function asciiWrite (buf, string, offset, length) {
return blitBuffer(asciiToBytes(string), buf, offset, length)
}
function latin1Write (buf, string, offset, length) {
return asciiWrite(buf, string, offset, length)
}
function base64Write (buf, string, offset, length) {
return blitBuffer(base64ToBytes(string), buf, offset, length)
}
function ucs2Write (buf, string, offset, length) {
return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
}
Buffer.prototype.write = function write (string, offset, length, encoding) {
// Buffer#write(string)
if (offset === undefined) {
encoding = 'utf8'
length = this.length
offset = 0
// Buffer#write(string, encoding)
} else if (length === undefined && typeof offset === 'string') {
encoding = offset
length = this.length
offset = 0
// Buffer#write(string, offset[, length][, encoding])
} else if (isFinite(offset)) {
offset = offset | 0
if (isFinite(length)) {
length = length | 0
if (encoding === undefined) encoding = 'utf8'
} else {
encoding = length
length = undefined
}
// legacy write(string, encoding, offset, length) - remove in v0.13
} else {
throw new Error(
'Buffer.write(string, encoding, offset[, length]) is no longer supported'
)
}
var remaining = this.length - offset
if (length === undefined || length > remaining) length = remaining
if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
throw new RangeError('Attempt to write outside buffer bounds')
}
if (!encoding) encoding = 'utf8'
var loweredCase = false
for (;;) {
switch (encoding) {
case 'hex':
return hexWrite(this, string, offset, length)
case 'utf8':
case 'utf-8':
return utf8Write(this, string, offset, length)
case 'ascii':
return asciiWrite(this, string, offset, length)
case 'latin1':
case 'binary':
return latin1Write(this, string, offset, length)
case 'base64':
// Warning: maxLength not taken into account in base64Write
return base64Write(this, string, offset, length)
case 'ucs2':
case 'ucs-2':
case 'utf16le':
case 'utf-16le':
return ucs2Write(this, string, offset, length)
default:
if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
encoding = ('' + encoding).toLowerCase()
loweredCase = true
}
}
}
Buffer.prototype.toJSON = function toJSON () {
return {
type: 'Buffer',
data: Array.prototype.slice.call(this._arr || this, 0)
}
}
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) {
end = Math.min(buf.length, end)
var res = []
var i = start
while (i < end) {
var firstByte = buf[i]
var codePoint = null
var bytesPerSequence = (firstByte > 0xEF) ? 4
: (firstByte > 0xDF) ? 3
: (firstByte > 0xBF) ? 2
: 1
if (i + bytesPerSequence <= end) {
var secondByte, thirdByte, fourthByte, tempCodePoint
switch (bytesPerSequence) {
case 1:
if (firstByte < 0x80) {
codePoint = firstByte
}
break
case 2:
secondByte = buf[i + 1]
if ((secondByte & 0xC0) === 0x80) {
tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
if (tempCodePoint > 0x7F) {
codePoint = tempCodePoint
}
}
break
case 3:
secondByte = buf[i + 1]
thirdByte = buf[i + 2]
if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
codePoint = tempCodePoint
}
}
break
case 4:
secondByte = buf[i + 1]
thirdByte = buf[i + 2]
fourthByte = buf[i + 3]
if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
codePoint = tempCodePoint
}
}
}
}
if (codePoint === null) {
// we did not generate a valid codePoint so insert a
// replacement char (U+FFFD) and advance only 1 byte
codePoint = 0xFFFD
bytesPerSequence = 1
} else if (codePoint > 0xFFFF) {
// encode to utf16 (surrogate pair dance)
codePoint -= 0x10000
res.push(codePoint >>> 10 & 0x3FF | 0xD800)
codePoint = 0xDC00 | codePoint & 0x3FF
}
res.push(codePoint)
i += bytesPerSequence
}
return decodeCodePointsArray(res)
}
// Based on http://stackoverflow.com/a/22747272/680742, the browser with
// the lowest limit is Chrome, with 0x10000 args.
// We go 1 magnitude less, for safety
var MAX_ARGUMENTS_LENGTH = 0x1000
function decodeCodePointsArray (codePoints) {
var len = codePoints.length
if (len <= MAX_ARGUMENTS_LENGTH) {
return String.fromCharCode.apply(String, codePoints) // avoid extra slice()
}
// Decode in chunks to avoid "call stack size exceeded".
var res = ''
var i = 0
while (i < len) {
res += String.fromCharCode.apply(
String,
codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
)
}
return res
}
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] & 0x7F)
}
return ret
}
function latin1Slice (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 hexSlice (buf, start, end) {
var len = buf.le