510 lines
14 KiB
JavaScript
510 lines
14 KiB
JavaScript
'use strict'
|
|
/*! https://mths.be/punycode v1.4.1 by @mathias */
|
|
;(function(root) {
|
|
/** Detect free variables */
|
|
var freeExports = typeof exports == 'object' && exports && !exports.nodeType && exports
|
|
var freeModule = typeof module == 'object' && module && !module.nodeType && module
|
|
var freeGlobal = typeof global == 'object' && global
|
|
if (
|
|
freeGlobal.global === freeGlobal ||
|
|
freeGlobal.window === freeGlobal ||
|
|
freeGlobal.self === freeGlobal
|
|
) {
|
|
root = freeGlobal
|
|
}
|
|
|
|
/**
|
|
* The `punycode` object.
|
|
* @name punycode
|
|
* @type Object
|
|
*/
|
|
var punycode,
|
|
/** Highest positive signed 32-bit float value */
|
|
maxInt = 2147483647, // aka. 0x7FFFFFFF or 2^31-1
|
|
/** Bootstring parameters */
|
|
base = 36,
|
|
tMin = 1,
|
|
tMax = 26,
|
|
skew = 38,
|
|
damp = 700,
|
|
initialBias = 72,
|
|
initialN = 128, // 0x80
|
|
delimiter = '-', // '\x2D'
|
|
/** Regular expressions */
|
|
regexPunycode = /^xn--/,
|
|
regexNonASCII = /[^\x20-\x7E]/, // unprintable ASCII chars + non-ASCII chars
|
|
regexSeparators = /[\x2E\u3002\uFF0E\uFF61]/g, // RFC 3490 separators
|
|
/** Error messages */
|
|
errors = {
|
|
overflow: 'Overflow: input needs wider integers to process',
|
|
'not-basic': 'Illegal input >= 0x80 (not a basic code point)',
|
|
'invalid-input': 'Invalid input'
|
|
},
|
|
/** Convenience shortcuts */
|
|
baseMinusTMin = base - tMin,
|
|
floor = Math.floor,
|
|
stringFromCharCode = String.fromCharCode,
|
|
/** Temporary variable */
|
|
key
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
/**
|
|
* A generic error utility function.
|
|
* @private
|
|
* @param {String} type The error type.
|
|
* @returns {Error} Throws a `RangeError` with the applicable error message.
|
|
*/
|
|
function error(type) {
|
|
throw new RangeError(errors[type])
|
|
}
|
|
|
|
/**
|
|
* A generic `Array#map` utility function.
|
|
* @private
|
|
* @param {Array} array The array to iterate over.
|
|
* @param {Function} callback The function that gets called for every array
|
|
* item.
|
|
* @returns {Array} A new array of values returned by the callback function.
|
|
*/
|
|
function map(array, fn) {
|
|
var length = array.length
|
|
var result = []
|
|
while (length--) {
|
|
result[length] = fn(array[length])
|
|
}
|
|
return result
|
|
}
|
|
|
|
/**
|
|
* A simple `Array#map`-like wrapper to work with domain name strings or email
|
|
* addresses.
|
|
* @private
|
|
* @param {String} domain The domain name or email address.
|
|
* @param {Function} callback The function that gets called for every
|
|
* character.
|
|
* @returns {Array} A new string of characters returned by the callback
|
|
* function.
|
|
*/
|
|
function mapDomain(string, fn) {
|
|
var parts = string.split('@')
|
|
var result = ''
|
|
if (parts.length > 1) {
|
|
// In email addresses, only the domain name should be punycoded. Leave
|
|
// the local part (i.e. everything up to `@`) intact.
|
|
result = parts[0] + '@'
|
|
string = parts[1]
|
|
}
|
|
// Avoid `split(regex)` for IE8 compatibility. See #17.
|
|
string = string.replace(regexSeparators, '\x2E')
|
|
var labels = string.split('.')
|
|
var encoded = map(labels, fn).join('.')
|
|
return result + encoded
|
|
}
|
|
|
|
/**
|
|
* Creates an array containing the numeric code points of each Unicode
|
|
* character in the string. While JavaScript uses UCS-2 internally,
|
|
* this function will convert a pair of surrogate halves (each of which
|
|
* UCS-2 exposes as separate characters) into a single code point,
|
|
* matching UTF-16.
|
|
* @see `punycode.ucs2.encode`
|
|
* @see <https://mathiasbynens.be/notes/javascript-encoding>
|
|
* @memberOf punycode.ucs2
|
|
* @name decode
|
|
* @param {String} string The Unicode input string (UCS-2).
|
|
* @returns {Array} The new array of code points.
|
|
*/
|
|
function ucs2decode(string) {
|
|
var output = [],
|
|
counter = 0,
|
|
length = string.length,
|
|
value,
|
|
extra
|
|
while (counter < length) {
|
|
value = string.charCodeAt(counter++)
|
|
if (value >= 0xd800 && value <= 0xdbff && counter < length) {
|
|
// high surrogate, and there is a next character
|
|
extra = string.charCodeAt(counter++)
|
|
if ((extra & 0xfc00) == 0xdc00) {
|
|
// low surrogate
|
|
output.push(((value & 0x3ff) << 10) + (extra & 0x3ff) + 0x10000)
|
|
} else {
|
|
// unmatched surrogate; only append this code unit, in case the next
|
|
// code unit is the high surrogate of a surrogate pair
|
|
output.push(value)
|
|
counter--
|
|
}
|
|
} else {
|
|
output.push(value)
|
|
}
|
|
}
|
|
return output
|
|
}
|
|
|
|
/**
|
|
* Creates a string based on an array of numeric code points.
|
|
* @see `punycode.ucs2.decode`
|
|
* @memberOf punycode.ucs2
|
|
* @name encode
|
|
* @param {Array} codePoints The array of numeric code points.
|
|
* @returns {String} The new Unicode string (UCS-2).
|
|
*/
|
|
function ucs2encode(array) {
|
|
return map(array, function(value) {
|
|
var output = ''
|
|
if (value > 0xffff) {
|
|
value -= 0x10000
|
|
output += stringFromCharCode(((value >>> 10) & 0x3ff) | 0xd800)
|
|
value = 0xdc00 | (value & 0x3ff)
|
|
}
|
|
output += stringFromCharCode(value)
|
|
return output
|
|
}).join('')
|
|
}
|
|
|
|
/**
|
|
* Converts a basic code point into a digit/integer.
|
|
* @see `digitToBasic()`
|
|
* @private
|
|
* @param {Number} codePoint The basic numeric code point value.
|
|
* @returns {Number} The numeric value of a basic code point (for use in
|
|
* representing integers) in the range `0` to `base - 1`, or `base` if
|
|
* the code point does not represent a value.
|
|
*/
|
|
function basicToDigit(codePoint) {
|
|
if (codePoint - 48 < 10) {
|
|
return codePoint - 22
|
|
}
|
|
if (codePoint - 65 < 26) {
|
|
return codePoint - 65
|
|
}
|
|
if (codePoint - 97 < 26) {
|
|
return codePoint - 97
|
|
}
|
|
return base
|
|
}
|
|
|
|
/**
|
|
* Converts a digit/integer into a basic code point.
|
|
* @see `basicToDigit()`
|
|
* @private
|
|
* @param {Number} digit The numeric value of a basic code point.
|
|
* @returns {Number} The basic code point whose value (when used for
|
|
* representing integers) is `digit`, which needs to be in the range
|
|
* `0` to `base - 1`. If `flag` is non-zero, the uppercase form is
|
|
* used; else, the lowercase form is used. The behavior is undefined
|
|
* if `flag` is non-zero and `digit` has no uppercase form.
|
|
*/
|
|
function digitToBasic(digit, flag) {
|
|
// 0..25 map to ASCII a..z or A..Z
|
|
// 26..35 map to ASCII 0..9
|
|
return digit + 22 + 75 * (digit < 26) - ((flag != 0) << 5)
|
|
}
|
|
|
|
/**
|
|
* Bias adaptation function as per section 3.4 of RFC 3492.
|
|
* https://tools.ietf.org/html/rfc3492#section-3.4
|
|
* @private
|
|
*/
|
|
function adapt(delta, numPoints, firstTime) {
|
|
var k = 0
|
|
delta = firstTime ? floor(delta / damp) : delta >> 1
|
|
delta += floor(delta / numPoints)
|
|
for (; /* no initialization */ delta > (baseMinusTMin * tMax) >> 1; k += base) {
|
|
delta = floor(delta / baseMinusTMin)
|
|
}
|
|
return floor(k + ((baseMinusTMin + 1) * delta) / (delta + skew))
|
|
}
|
|
|
|
/**
|
|
* Converts a Punycode string of ASCII-only symbols to a string of Unicode
|
|
* symbols.
|
|
* @memberOf punycode
|
|
* @param {String} input The Punycode string of ASCII-only symbols.
|
|
* @returns {String} The resulting string of Unicode symbols.
|
|
*/
|
|
function decode(input) {
|
|
// Don't use UCS-2
|
|
var output = [],
|
|
inputLength = input.length,
|
|
out,
|
|
i = 0,
|
|
n = initialN,
|
|
bias = initialBias,
|
|
basic,
|
|
j,
|
|
index,
|
|
oldi,
|
|
w,
|
|
k,
|
|
digit,
|
|
t,
|
|
/** Cached calculation results */
|
|
baseMinusT
|
|
|
|
// Handle the basic code points: let `basic` be the number of input code
|
|
// points before the last delimiter, or `0` if there is none, then copy
|
|
// the first basic code points to the output.
|
|
|
|
basic = input.lastIndexOf(delimiter)
|
|
if (basic < 0) {
|
|
basic = 0
|
|
}
|
|
|
|
for (j = 0; j < basic; ++j) {
|
|
// if it's not a basic code point
|
|
if (input.charCodeAt(j) >= 0x80) {
|
|
error('not-basic')
|
|
}
|
|
output.push(input.charCodeAt(j))
|
|
}
|
|
|
|
// Main decoding loop: start just after the last delimiter if any basic code
|
|
// points were copied; start at the beginning otherwise.
|
|
|
|
for (index = basic > 0 ? basic + 1 : 0; index < inputLength /* no final expression */; ) {
|
|
// `index` is the index of the next character to be consumed.
|
|
// Decode a generalized variable-length integer into `delta`,
|
|
// which gets added to `i`. The overflow checking is easier
|
|
// if we increase `i` as we go, then subtract off its starting
|
|
// value at the end to obtain `delta`.
|
|
for (oldi = i, w = 1, k = base /* no condition */; ; k += base) {
|
|
if (index >= inputLength) {
|
|
error('invalid-input')
|
|
}
|
|
|
|
digit = basicToDigit(input.charCodeAt(index++))
|
|
|
|
if (digit >= base || digit > floor((maxInt - i) / w)) {
|
|
error('overflow')
|
|
}
|
|
|
|
i += digit * w
|
|
t = k <= bias ? tMin : k >= bias + tMax ? tMax : k - bias
|
|
|
|
if (digit < t) {
|
|
break
|
|
}
|
|
|
|
baseMinusT = base - t
|
|
if (w > floor(maxInt / baseMinusT)) {
|
|
error('overflow')
|
|
}
|
|
|
|
w *= baseMinusT
|
|
}
|
|
|
|
out = output.length + 1
|
|
bias = adapt(i - oldi, out, oldi == 0)
|
|
|
|
// `i` was supposed to wrap around from `out` to `0`,
|
|
// incrementing `n` each time, so we'll fix that now:
|
|
if (floor(i / out) > maxInt - n) {
|
|
error('overflow')
|
|
}
|
|
|
|
n += floor(i / out)
|
|
i %= out
|
|
|
|
// Insert `n` at position `i` of the output
|
|
output.splice(i++, 0, n)
|
|
}
|
|
|
|
return ucs2encode(output)
|
|
}
|
|
|
|
/**
|
|
* Converts a string of Unicode symbols (e.g. a domain name label) to a
|
|
* Punycode string of ASCII-only symbols.
|
|
* @memberOf punycode
|
|
* @param {String} input The string of Unicode symbols.
|
|
* @returns {String} The resulting Punycode string of ASCII-only symbols.
|
|
*/
|
|
function encode(input) {
|
|
var n,
|
|
delta,
|
|
handledCPCount,
|
|
basicLength,
|
|
bias,
|
|
j,
|
|
m,
|
|
q,
|
|
k,
|
|
t,
|
|
currentValue,
|
|
output = [],
|
|
/** `inputLength` will hold the number of code points in `input`. */
|
|
inputLength,
|
|
/** Cached calculation results */
|
|
handledCPCountPlusOne,
|
|
baseMinusT,
|
|
qMinusT
|
|
|
|
// Convert the input in UCS-2 to Unicode
|
|
input = ucs2decode(input)
|
|
|
|
// Cache the length
|
|
inputLength = input.length
|
|
|
|
// Initialize the state
|
|
n = initialN
|
|
delta = 0
|
|
bias = initialBias
|
|
|
|
// Handle the basic code points
|
|
for (j = 0; j < inputLength; ++j) {
|
|
currentValue = input[j]
|
|
if (currentValue < 0x80) {
|
|
output.push(stringFromCharCode(currentValue))
|
|
}
|
|
}
|
|
|
|
handledCPCount = basicLength = output.length
|
|
|
|
// `handledCPCount` is the number of code points that have been handled;
|
|
// `basicLength` is the number of basic code points.
|
|
|
|
// Finish the basic string - if it is not empty - with a delimiter
|
|
if (basicLength) {
|
|
output.push(delimiter)
|
|
}
|
|
|
|
// Main encoding loop:
|
|
while (handledCPCount < inputLength) {
|
|
// All non-basic code points < n have been handled already. Find the next
|
|
// larger one:
|
|
for (m = maxInt, j = 0; j < inputLength; ++j) {
|
|
currentValue = input[j]
|
|
if (currentValue >= n && currentValue < m) {
|
|
m = currentValue
|
|
}
|
|
}
|
|
|
|
// Increase `delta` enough to advance the decoder's <n,i> state to <m,0>,
|
|
// but guard against overflow
|
|
handledCPCountPlusOne = handledCPCount + 1
|
|
if (m - n > floor((maxInt - delta) / handledCPCountPlusOne)) {
|
|
error('overflow')
|
|
}
|
|
|
|
delta += (m - n) * handledCPCountPlusOne
|
|
n = m
|
|
|
|
for (j = 0; j < inputLength; ++j) {
|
|
currentValue = input[j]
|
|
|
|
if (currentValue < n && ++delta > maxInt) {
|
|
error('overflow')
|
|
}
|
|
|
|
if (currentValue == n) {
|
|
// Represent delta as a generalized variable-length integer
|
|
for (q = delta, k = base /* no condition */; ; k += base) {
|
|
t = k <= bias ? tMin : k >= bias + tMax ? tMax : k - bias
|
|
if (q < t) {
|
|
break
|
|
}
|
|
qMinusT = q - t
|
|
baseMinusT = base - t
|
|
output.push(stringFromCharCode(digitToBasic(t + (qMinusT % baseMinusT), 0)))
|
|
q = floor(qMinusT / baseMinusT)
|
|
}
|
|
|
|
output.push(stringFromCharCode(digitToBasic(q, 0)))
|
|
bias = adapt(delta, handledCPCountPlusOne, handledCPCount == basicLength)
|
|
delta = 0
|
|
++handledCPCount
|
|
}
|
|
}
|
|
|
|
++delta
|
|
++n
|
|
}
|
|
return output.join('')
|
|
}
|
|
|
|
/**
|
|
* Converts a Punycode string representing a domain name or an email address
|
|
* to Unicode. Only the Punycoded parts of the input will be converted, i.e.
|
|
* it doesn't matter if you call it on a string that has already been
|
|
* converted to Unicode.
|
|
* @memberOf punycode
|
|
* @param {String} input The Punycoded domain name or email address to
|
|
* convert to Unicode.
|
|
* @returns {String} The Unicode representation of the given Punycode
|
|
* string.
|
|
*/
|
|
function toUnicode(input) {
|
|
return mapDomain(input, function(string) {
|
|
return regexPunycode.test(string) ? decode(string.slice(4).toLowerCase()) : string
|
|
})
|
|
}
|
|
|
|
/**
|
|
* Converts a Unicode string representing a domain name or an email address to
|
|
* Punycode. Only the non-ASCII parts of the domain name will be converted,
|
|
* i.e. it doesn't matter if you call it with a domain that's already in
|
|
* ASCII.
|
|
* @memberOf punycode
|
|
* @param {String} input The domain name or email address to convert, as a
|
|
* Unicode string.
|
|
* @returns {String} The Punycode representation of the given domain name or
|
|
* email address.
|
|
*/
|
|
function toASCII(input) {
|
|
return mapDomain(input, function(string) {
|
|
return regexNonASCII.test(string) ? 'xn--' + encode(string) : string
|
|
})
|
|
}
|
|
|
|
/*--------------------------------------------------------------------------*/
|
|
|
|
/** Define the public API */
|
|
punycode = {
|
|
/**
|
|
* A string representing the current Punycode.js version number.
|
|
* @memberOf punycode
|
|
* @type String
|
|
*/
|
|
version: '1.4.1',
|
|
/**
|
|
* An object of methods to convert from JavaScript's internal character
|
|
* representation (UCS-2) to Unicode code points, and back.
|
|
* @see <https://mathiasbynens.be/notes/javascript-encoding>
|
|
* @memberOf punycode
|
|
* @type Object
|
|
*/
|
|
ucs2: {
|
|
decode: ucs2decode,
|
|
encode: ucs2encode
|
|
},
|
|
decode: decode,
|
|
encode: encode,
|
|
toASCII: toASCII,
|
|
toUnicode: toUnicode
|
|
}
|
|
|
|
/** Expose `punycode` */
|
|
// Some AMD build optimizers, like r.js, check for specific condition patterns
|
|
// like the following:
|
|
if (typeof define == 'function' && typeof define.amd == 'object' && define.amd) {
|
|
define('punycode', function() {
|
|
return punycode
|
|
})
|
|
} else if (freeExports && freeModule) {
|
|
if (module.exports == freeExports) {
|
|
// in Node.js, io.js, or RingoJS v0.8.0+
|
|
freeModule.exports = punycode
|
|
} else {
|
|
// in Narwhal or RingoJS v0.7.0-
|
|
for (key in punycode) {
|
|
punycode.hasOwnProperty(key) && (freeExports[key] = punycode[key])
|
|
}
|
|
}
|
|
} else {
|
|
// in Rhino or a web browser
|
|
root.punycode = punycode
|
|
}
|
|
})(this)
|