1 | (function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.buffer = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
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2 | 'use strict'
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3 |
|
4 | exports.byteLength = byteLength
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5 | exports.toByteArray = toByteArray
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6 | exports.fromByteArray = fromByteArray
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7 |
|
8 | var lookup = []
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9 | var revLookup = []
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10 | var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array
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11 |
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12 | var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/'
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13 | for (var i = 0, len = code.length; i < len; ++i) {
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14 | lookup[i] = code[i]
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15 | revLookup[code.charCodeAt(i)] = i
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16 | }
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17 |
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18 | revLookup['-'.charCodeAt(0)] = 62
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19 | revLookup['_'.charCodeAt(0)] = 63
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20 |
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21 | function placeHoldersCount (b64) {
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22 | var len = b64.length
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23 | if (len % 4 > 0) {
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24 | throw new Error('Invalid string. Length must be a multiple of 4')
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25 | }
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26 |
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27 |
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28 |
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29 |
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30 |
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31 |
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32 | return b64[len - 2] === '=' ? 2 : b64[len - 1] === '=' ? 1 : 0
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33 | }
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34 |
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35 | function byteLength (b64) {
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36 |
|
37 | return b64.length * 3 / 4 - placeHoldersCount(b64)
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38 | }
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39 |
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40 | function toByteArray (b64) {
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41 | var i, j, l, tmp, placeHolders, arr
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42 | var len = b64.length
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43 | placeHolders = placeHoldersCount(b64)
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44 |
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45 | arr = new Arr(len * 3 / 4 - placeHolders)
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46 |
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47 |
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48 | l = placeHolders > 0 ? len - 4 : len
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49 |
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50 | var L = 0
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51 |
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52 | for (i = 0, j = 0; i < l; i += 4, j += 3) {
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53 | tmp = (revLookup[b64.charCodeAt(i)] << 18) | (revLookup[b64.charCodeAt(i + 1)] << 12) | (revLookup[b64.charCodeAt(i + 2)] << 6) | revLookup[b64.charCodeAt(i + 3)]
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54 | arr[L++] = (tmp >> 16) & 0xFF
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55 | arr[L++] = (tmp >> 8) & 0xFF
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56 | arr[L++] = tmp & 0xFF
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57 | }
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58 |
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59 | if (placeHolders === 2) {
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60 | tmp = (revLookup[b64.charCodeAt(i)] << 2) | (revLookup[b64.charCodeAt(i + 1)] >> 4)
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61 | arr[L++] = tmp & 0xFF
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62 | } else if (placeHolders === 1) {
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63 | tmp = (revLookup[b64.charCodeAt(i)] << 10) | (revLookup[b64.charCodeAt(i + 1)] << 4) | (revLookup[b64.charCodeAt(i + 2)] >> 2)
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64 | arr[L++] = (tmp >> 8) & 0xFF
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65 | arr[L++] = tmp & 0xFF
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66 | }
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67 |
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68 | return arr
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69 | }
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70 |
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71 | function tripletToBase64 (num) {
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72 | return lookup[num >> 18 & 0x3F] + lookup[num >> 12 & 0x3F] + lookup[num >> 6 & 0x3F] + lookup[num & 0x3F]
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73 | }
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74 |
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75 | function encodeChunk (uint8, start, end) {
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76 | var tmp
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77 | var output = []
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78 | for (var i = start; i < end; i += 3) {
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79 | tmp = (uint8[i] << 16) + (uint8[i + 1] << 8) + (uint8[i + 2])
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80 | output.push(tripletToBase64(tmp))
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81 | }
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82 | return output.join('')
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83 | }
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84 |
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85 | function fromByteArray (uint8) {
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86 | var tmp
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87 | var len = uint8.length
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88 | var extraBytes = len % 3
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89 | var output = ''
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90 | var parts = []
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91 | var maxChunkLength = 16383
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92 |
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93 |
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94 | for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) {
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95 | parts.push(encodeChunk(uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength)))
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96 | }
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97 |
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98 |
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99 | if (extraBytes === 1) {
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100 | tmp = uint8[len - 1]
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101 | output += lookup[tmp >> 2]
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102 | output += lookup[(tmp << 4) & 0x3F]
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103 | output += '=='
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104 | } else if (extraBytes === 2) {
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105 | tmp = (uint8[len - 2] << 8) + (uint8[len - 1])
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106 | output += lookup[tmp >> 10]
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107 | output += lookup[(tmp >> 4) & 0x3F]
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108 | output += lookup[(tmp << 2) & 0x3F]
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109 | output += '='
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110 | }
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111 |
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112 | parts.push(output)
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113 |
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114 | return parts.join('')
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115 | }
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116 |
|
117 | },{}],2:[function(require,module,exports){
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118 | exports.read = function (buffer, offset, isLE, mLen, nBytes) {
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119 | var e, m
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120 | var eLen = nBytes * 8 - mLen - 1
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121 | var eMax = (1 << eLen) - 1
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122 | var eBias = eMax >> 1
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123 | var nBits = -7
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124 | var i = isLE ? (nBytes - 1) : 0
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125 | var d = isLE ? -1 : 1
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126 | var s = buffer[offset + i]
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127 |
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128 | i += d
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129 |
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130 | e = s & ((1 << (-nBits)) - 1)
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131 | s >>= (-nBits)
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132 | nBits += eLen
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133 | for (; nBits > 0; e = e * 256 + buffer[offset + i], i += d, nBits -= 8) {}
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134 |
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135 | m = e & ((1 << (-nBits)) - 1)
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136 | e >>= (-nBits)
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137 | nBits += mLen
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138 | for (; nBits > 0; m = m * 256 + buffer[offset + i], i += d, nBits -= 8) {}
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139 |
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140 | if (e === 0) {
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141 | e = 1 - eBias
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142 | } else if (e === eMax) {
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143 | return m ? NaN : ((s ? -1 : 1) * Infinity)
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144 | } else {
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145 | m = m + Math.pow(2, mLen)
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146 | e = e - eBias
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147 | }
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148 | return (s ? -1 : 1) * m * Math.pow(2, e - mLen)
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149 | }
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150 |
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151 | exports.write = function (buffer, value, offset, isLE, mLen, nBytes) {
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152 | var e, m, c
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153 | var eLen = nBytes * 8 - mLen - 1
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154 | var eMax = (1 << eLen) - 1
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155 | var eBias = eMax >> 1
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156 | var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0)
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157 | var i = isLE ? 0 : (nBytes - 1)
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158 | var d = isLE ? 1 : -1
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159 | var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0
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160 |
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161 | value = Math.abs(value)
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162 |
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163 | if (isNaN(value) || value === Infinity) {
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164 | m = isNaN(value) ? 1 : 0
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165 | e = eMax
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166 | } else {
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167 | e = Math.floor(Math.log(value) / Math.LN2)
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168 | if (value * (c = Math.pow(2, -e)) < 1) {
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169 | e--
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170 | c *= 2
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171 | }
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172 | if (e + eBias >= 1) {
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173 | value += rt / c
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174 | } else {
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175 | value += rt * Math.pow(2, 1 - eBias)
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176 | }
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177 | if (value * c >= 2) {
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178 | e++
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179 | c /= 2
|
180 | }
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181 |
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182 | if (e + eBias >= eMax) {
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183 | m = 0
|
184 | e = eMax
|
185 | } else if (e + eBias >= 1) {
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186 | m = (value * c - 1) * Math.pow(2, mLen)
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187 | e = e + eBias
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188 | } else {
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189 | m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen)
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190 | e = 0
|
191 | }
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192 | }
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193 |
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194 | for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {}
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195 |
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196 | e = (e << mLen) | m
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197 | eLen += mLen
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198 | for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {}
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199 |
|
200 | buffer[offset + i - d] |= s * 128
|
201 | }
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202 |
|
203 | },{}],3:[function(require,module,exports){
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204 | var toString = {}.toString;
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205 |
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206 | module.exports = Array.isArray || function (arr) {
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207 | return toString.call(arr) == '[object Array]';
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208 | };
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209 |
|
210 | },{}],"buffer":[function(require,module,exports){
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211 | (function (global){
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212 |
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213 |
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214 |
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215 |
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216 |
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217 |
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218 |
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219 |
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220 | 'use strict'
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221 |
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222 | var base64 = require('base64-js')
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223 | var ieee754 = require('ieee754')
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224 | var isArray = require('isarray')
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225 |
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226 | exports.Buffer = Buffer
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227 | exports.SlowBuffer = SlowBuffer
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228 | exports.INSPECT_MAX_BYTES = 50
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229 |
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230 |
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231 |
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232 |
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233 |
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234 |
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235 |
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236 |
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237 |
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238 |
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239 |
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240 |
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241 |
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242 |
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243 |
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244 |
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245 |
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246 |
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247 |
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248 |
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249 |
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250 |
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251 |
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252 |
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253 |
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254 | Buffer.TYPED_ARRAY_SUPPORT = global.TYPED_ARRAY_SUPPORT !== undefined
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255 | ? global.TYPED_ARRAY_SUPPORT
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256 | : typedArraySupport()
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257 |
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258 |
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259 |
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260 |
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261 | exports.kMaxLength = kMaxLength()
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262 |
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263 | function typedArraySupport () {
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264 | try {
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265 | var arr = new Uint8Array(1)
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266 | arr.__proto__ = {__proto__: Uint8Array.prototype, foo: function () { return 42 }}
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267 | return arr.foo() === 42 &&
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268 | typeof arr.subarray === 'function' &&
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269 | arr.subarray(1, 1).byteLength === 0
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270 | } catch (e) {
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271 | return false
|
272 | }
|
273 | }
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274 |
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275 | function kMaxLength () {
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276 | return Buffer.TYPED_ARRAY_SUPPORT
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277 | ? 0x7fffffff
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278 | : 0x3fffffff
|
279 | }
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280 |
|
281 | function createBuffer (that, length) {
|
282 | if (kMaxLength() < length) {
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283 | throw new RangeError('Invalid typed array length')
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284 | }
|
285 | if (Buffer.TYPED_ARRAY_SUPPORT) {
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286 |
|
287 | that = new Uint8Array(length)
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288 | that.__proto__ = Buffer.prototype
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289 | } else {
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290 |
|
291 | if (that === null) {
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292 | that = new Buffer(length)
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293 | }
|
294 | that.length = length
|
295 | }
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296 |
|
297 | return that
|
298 | }
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299 |
|
300 |
|
301 |
|
302 |
|
303 |
|
304 |
|
305 |
|
306 |
|
307 |
|
308 |
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309 |
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310 | function Buffer (arg, encodingOrOffset, length) {
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311 | if (!Buffer.TYPED_ARRAY_SUPPORT && !(this instanceof Buffer)) {
|
312 | return new Buffer(arg, encodingOrOffset, length)
|
313 | }
|
314 |
|
315 |
|
316 | if (typeof arg === 'number') {
|
317 | if (typeof encodingOrOffset === 'string') {
|
318 | throw new Error(
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319 | 'If encoding is specified then the first argument must be a string'
|
320 | )
|
321 | }
|
322 | return allocUnsafe(this, arg)
|
323 | }
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324 | return from(this, arg, encodingOrOffset, length)
|
325 | }
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326 |
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327 | Buffer.poolSize = 8192
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328 |
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329 |
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330 | Buffer._augment = function (arr) {
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331 | arr.__proto__ = Buffer.prototype
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332 | return arr
|
333 | }
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334 |
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335 | function from (that, value, encodingOrOffset, length) {
|
336 | if (typeof value === 'number') {
|
337 | throw new TypeError('"value" argument must not be a number')
|
338 | }
|
339 |
|
340 | if (typeof ArrayBuffer !== 'undefined' && value instanceof ArrayBuffer) {
|
341 | return fromArrayBuffer(that, value, encodingOrOffset, length)
|
342 | }
|
343 |
|
344 | if (typeof value === 'string') {
|
345 | return fromString(that, value, encodingOrOffset)
|
346 | }
|
347 |
|
348 | return fromObject(that, value)
|
349 | }
|
350 |
|
351 |
|
352 |
|
353 |
|
354 |
|
355 |
|
356 |
|
357 |
|
358 |
|
359 | Buffer.from = function (value, encodingOrOffset, length) {
|
360 | return from(null, value, encodingOrOffset, length)
|
361 | }
|
362 |
|
363 | if (Buffer.TYPED_ARRAY_SUPPORT) {
|
364 | Buffer.prototype.__proto__ = Uint8Array.prototype
|
365 | Buffer.__proto__ = Uint8Array
|
366 | if (typeof Symbol !== 'undefined' && Symbol.species &&
|
367 | Buffer[Symbol.species] === Buffer) {
|
368 |
|
369 | Object.defineProperty(Buffer, Symbol.species, {
|
370 | value: null,
|
371 | configurable: true
|
372 | })
|
373 | }
|
374 | }
|
375 |
|
376 | function assertSize (size) {
|
377 | if (typeof size !== 'number') {
|
378 | throw new TypeError('"size" argument must be a number')
|
379 | } else if (size < 0) {
|
380 | throw new RangeError('"size" argument must not be negative')
|
381 | }
|
382 | }
|
383 |
|
384 | function alloc (that, size, fill, encoding) {
|
385 | assertSize(size)
|
386 | if (size <= 0) {
|
387 | return createBuffer(that, size)
|
388 | }
|
389 | if (fill !== undefined) {
|
390 |
|
391 |
|
392 |
|
393 | return typeof encoding === 'string'
|
394 | ? createBuffer(that, size).fill(fill, encoding)
|
395 | : createBuffer(that, size).fill(fill)
|
396 | }
|
397 | return createBuffer(that, size)
|
398 | }
|
399 |
|
400 |
|
401 |
|
402 |
|
403 |
|
404 | Buffer.alloc = function (size, fill, encoding) {
|
405 | return alloc(null, size, fill, encoding)
|
406 | }
|
407 |
|
408 | function allocUnsafe (that, size) {
|
409 | assertSize(size)
|
410 | that = createBuffer(that, size < 0 ? 0 : checked(size) | 0)
|
411 | if (!Buffer.TYPED_ARRAY_SUPPORT) {
|
412 | for (var i = 0; i < size; ++i) {
|
413 | that[i] = 0
|
414 | }
|
415 | }
|
416 | return that
|
417 | }
|
418 |
|
419 |
|
420 |
|
421 |
|
422 | Buffer.allocUnsafe = function (size) {
|
423 | return allocUnsafe(null, size)
|
424 | }
|
425 |
|
426 |
|
427 |
|
428 | Buffer.allocUnsafeSlow = function (size) {
|
429 | return allocUnsafe(null, size)
|
430 | }
|
431 |
|
432 | function fromString (that, string, encoding) {
|
433 | if (typeof encoding !== 'string' || encoding === '') {
|
434 | encoding = 'utf8'
|
435 | }
|
436 |
|
437 | if (!Buffer.isEncoding(encoding)) {
|
438 | throw new TypeError('"encoding" must be a valid string encoding')
|
439 | }
|
440 |
|
441 | var length = byteLength(string, encoding) | 0
|
442 | that = createBuffer(that, length)
|
443 |
|
444 | var actual = that.write(string, encoding)
|
445 |
|
446 | if (actual !== length) {
|
447 |
|
448 |
|
449 |
|
450 | that = that.slice(0, actual)
|
451 | }
|
452 |
|
453 | return that
|
454 | }
|
455 |
|
456 | function fromArrayLike (that, array) {
|
457 | var length = array.length < 0 ? 0 : checked(array.length) | 0
|
458 | that = createBuffer(that, length)
|
459 | for (var i = 0; i < length; i += 1) {
|
460 | that[i] = array[i] & 255
|
461 | }
|
462 | return that
|
463 | }
|
464 |
|
465 | function fromArrayBuffer (that, array, byteOffset, length) {
|
466 | array.byteLength
|
467 |
|
468 | if (byteOffset < 0 || array.byteLength < byteOffset) {
|
469 | throw new RangeError('\'offset\' is out of bounds')
|
470 | }
|
471 |
|
472 | if (array.byteLength < byteOffset + (length || 0)) {
|
473 | throw new RangeError('\'length\' is out of bounds')
|
474 | }
|
475 |
|
476 | if (byteOffset === undefined && length === undefined) {
|
477 | array = new Uint8Array(array)
|
478 | } else if (length === undefined) {
|
479 | array = new Uint8Array(array, byteOffset)
|
480 | } else {
|
481 | array = new Uint8Array(array, byteOffset, length)
|
482 | }
|
483 |
|
484 | if (Buffer.TYPED_ARRAY_SUPPORT) {
|
485 |
|
486 | that = array
|
487 | that.__proto__ = Buffer.prototype
|
488 | } else {
|
489 |
|
490 | that = fromArrayLike(that, array)
|
491 | }
|
492 | return that
|
493 | }
|
494 |
|
495 | function fromObject (that, obj) {
|
496 | if (Buffer.isBuffer(obj)) {
|
497 | var len = checked(obj.length) | 0
|
498 | that = createBuffer(that, len)
|
499 |
|
500 | if (that.length === 0) {
|
501 | return that
|
502 | }
|
503 |
|
504 | obj.copy(that, 0, 0, len)
|
505 | return that
|
506 | }
|
507 |
|
508 | if (obj) {
|
509 | if ((typeof ArrayBuffer !== 'undefined' &&
|
510 | obj.buffer instanceof ArrayBuffer) || 'length' in obj) {
|
511 | if (typeof obj.length !== 'number' || isnan(obj.length)) {
|
512 | return createBuffer(that, 0)
|
513 | }
|
514 | return fromArrayLike(that, obj)
|
515 | }
|
516 |
|
517 | if (obj.type === 'Buffer' && isArray(obj.data)) {
|
518 | return fromArrayLike(that, obj.data)
|
519 | }
|
520 | }
|
521 |
|
522 | throw new TypeError('First argument must be a string, Buffer, ArrayBuffer, Array, or array-like object.')
|
523 | }
|
524 |
|
525 | function checked (length) {
|
526 |
|
527 |
|
528 | if (length >= kMaxLength()) {
|
529 | throw new RangeError('Attempt to allocate Buffer larger than maximum ' +
|
530 | 'size: 0x' + kMaxLength().toString(16) + ' bytes')
|
531 | }
|
532 | return length | 0
|
533 | }
|
534 |
|
535 | function SlowBuffer (length) {
|
536 | if (+length != length) {
|
537 | length = 0
|
538 | }
|
539 | return Buffer.alloc(+length)
|
540 | }
|
541 |
|
542 | Buffer.isBuffer = function isBuffer (b) {
|
543 | return !!(b != null && b._isBuffer)
|
544 | }
|
545 |
|
546 | Buffer.compare = function compare (a, b) {
|
547 | if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) {
|
548 | throw new TypeError('Arguments must be Buffers')
|
549 | }
|
550 |
|
551 | if (a === b) return 0
|
552 |
|
553 | var x = a.length
|
554 | var y = b.length
|
555 |
|
556 | for (var i = 0, len = Math.min(x, y); i < len; ++i) {
|
557 | if (a[i] !== b[i]) {
|
558 | x = a[i]
|
559 | y = b[i]
|
560 | break
|
561 | }
|
562 | }
|
563 |
|
564 | if (x < y) return -1
|
565 | if (y < x) return 1
|
566 | return 0
|
567 | }
|
568 |
|
569 | Buffer.isEncoding = function isEncoding (encoding) {
|
570 | switch (String(encoding).toLowerCase()) {
|
571 | case 'hex':
|
572 | case 'utf8':
|
573 | case 'utf-8':
|
574 | case 'ascii':
|
575 | case 'latin1':
|
576 | case 'binary':
|
577 | case 'base64':
|
578 | case 'ucs2':
|
579 | case 'ucs-2':
|
580 | case 'utf16le':
|
581 | case 'utf-16le':
|
582 | return true
|
583 | default:
|
584 | return false
|
585 | }
|
586 | }
|
587 |
|
588 | Buffer.concat = function concat (list, length) {
|
589 | if (!isArray(list)) {
|
590 | throw new TypeError('"list" argument must be an Array of Buffers')
|
591 | }
|
592 |
|
593 | if (list.length === 0) {
|
594 | return Buffer.alloc(0)
|
595 | }
|
596 |
|
597 | var i
|
598 | if (length === undefined) {
|
599 | length = 0
|
600 | for (i = 0; i < list.length; ++i) {
|
601 | length += list[i].length
|
602 | }
|
603 | }
|
604 |
|
605 | var buffer = Buffer.allocUnsafe(length)
|
606 | var pos = 0
|
607 | for (i = 0; i < list.length; ++i) {
|
608 | var buf = list[i]
|
609 | if (!Buffer.isBuffer(buf)) {
|
610 | throw new TypeError('"list" argument must be an Array of Buffers')
|
611 | }
|
612 | buf.copy(buffer, pos)
|
613 | pos += buf.length
|
614 | }
|
615 | return buffer
|
616 | }
|
617 |
|
618 | function byteLength (string, encoding) {
|
619 | if (Buffer.isBuffer(string)) {
|
620 | return string.length
|
621 | }
|
622 | if (typeof ArrayBuffer !== 'undefined' && typeof ArrayBuffer.isView === 'function' &&
|
623 | (ArrayBuffer.isView(string) || string instanceof ArrayBuffer)) {
|
624 | return string.byteLength
|
625 | }
|
626 | if (typeof string !== 'string') {
|
627 | string = '' + string
|
628 | }
|
629 |
|
630 | var len = string.length
|
631 | if (len === 0) return 0
|
632 |
|
633 |
|
634 | var loweredCase = false
|
635 | for (;;) {
|
636 | switch (encoding) {
|
637 | case 'ascii':
|
638 | case 'latin1':
|
639 | case 'binary':
|
640 | return len
|
641 | case 'utf8':
|
642 | case 'utf-8':
|
643 | case undefined:
|
644 | return utf8ToBytes(string).length
|
645 | case 'ucs2':
|
646 | case 'ucs-2':
|
647 | case 'utf16le':
|
648 | case 'utf-16le':
|
649 | return len * 2
|
650 | case 'hex':
|
651 | return len >>> 1
|
652 | case 'base64':
|
653 | return base64ToBytes(string).length
|
654 | default:
|
655 | if (loweredCase) return utf8ToBytes(string).length
|
656 | encoding = ('' + encoding).toLowerCase()
|
657 | loweredCase = true
|
658 | }
|
659 | }
|
660 | }
|
661 | Buffer.byteLength = byteLength
|
662 |
|
663 | function slowToString (encoding, start, end) {
|
664 | var loweredCase = false
|
665 |
|
666 |
|
667 |
|
668 |
|
669 |
|
670 |
|
671 |
|
672 |
|
673 | if (start === undefined || start < 0) {
|
674 | start = 0
|
675 | }
|
676 |
|
677 |
|
678 | if (start > this.length) {
|
679 | return ''
|
680 | }
|
681 |
|
682 | if (end === undefined || end > this.length) {
|
683 | end = this.length
|
684 | }
|
685 |
|
686 | if (end <= 0) {
|
687 | return ''
|
688 | }
|
689 |
|
690 |
|
691 | end >>>= 0
|
692 | start >>>= 0
|
693 |
|
694 | if (end <= start) {
|
695 | return ''
|
696 | }
|
697 |
|
698 | if (!encoding) encoding = 'utf8'
|
699 |
|
700 | while (true) {
|
701 | switch (encoding) {
|
702 | case 'hex':
|
703 | return hexSlice(this, start, end)
|
704 |
|
705 | case 'utf8':
|
706 | case 'utf-8':
|
707 | return utf8Slice(this, start, end)
|
708 |
|
709 | case 'ascii':
|
710 | return asciiSlice(this, start, end)
|
711 |
|
712 | case 'latin1':
|
713 | case 'binary':
|
714 | return latin1Slice(this, start, end)
|
715 |
|
716 | case 'base64':
|
717 | return base64Slice(this, start, end)
|
718 |
|
719 | case 'ucs2':
|
720 | case 'ucs-2':
|
721 | case 'utf16le':
|
722 | case 'utf-16le':
|
723 | return utf16leSlice(this, start, end)
|
724 |
|
725 | default:
|
726 | if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
|
727 | encoding = (encoding + '').toLowerCase()
|
728 | loweredCase = true
|
729 | }
|
730 | }
|
731 | }
|
732 |
|
733 |
|
734 |
|
735 | Buffer.prototype._isBuffer = true
|
736 |
|
737 | function swap (b, n, m) {
|
738 | var i = b[n]
|
739 | b[n] = b[m]
|
740 | b[m] = i
|
741 | }
|
742 |
|
743 | Buffer.prototype.swap16 = function swap16 () {
|
744 | var len = this.length
|
745 | if (len % 2 !== 0) {
|
746 | throw new RangeError('Buffer size must be a multiple of 16-bits')
|
747 | }
|
748 | for (var i = 0; i < len; i += 2) {
|
749 | swap(this, i, i + 1)
|
750 | }
|
751 | return this
|
752 | }
|
753 |
|
754 | Buffer.prototype.swap32 = function swap32 () {
|
755 | var len = this.length
|
756 | if (len % 4 !== 0) {
|
757 | throw new RangeError('Buffer size must be a multiple of 32-bits')
|
758 | }
|
759 | for (var i = 0; i < len; i += 4) {
|
760 | swap(this, i, i + 3)
|
761 | swap(this, i + 1, i + 2)
|
762 | }
|
763 | return this
|
764 | }
|
765 |
|
766 | Buffer.prototype.swap64 = function swap64 () {
|
767 | var len = this.length
|
768 | if (len % 8 !== 0) {
|
769 | throw new RangeError('Buffer size must be a multiple of 64-bits')
|
770 | }
|
771 | for (var i = 0; i < len; i += 8) {
|
772 | swap(this, i, i + 7)
|
773 | swap(this, i + 1, i + 6)
|
774 | swap(this, i + 2, i + 5)
|
775 | swap(this, i + 3, i + 4)
|
776 | }
|
777 | return this
|
778 | }
|
779 |
|
780 | Buffer.prototype.toString = function toString () {
|
781 | var length = this.length | 0
|
782 | if (length === 0) return ''
|
783 | if (arguments.length === 0) return utf8Slice(this, 0, length)
|
784 | return slowToString.apply(this, arguments)
|
785 | }
|
786 |
|
787 | Buffer.prototype.equals = function equals (b) {
|
788 | if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer')
|
789 | if (this === b) return true
|
790 | return Buffer.compare(this, b) === 0
|
791 | }
|
792 |
|
793 | Buffer.prototype.inspect = function inspect () {
|
794 | var str = ''
|
795 | var max = exports.INSPECT_MAX_BYTES
|
796 | if (this.length > 0) {
|
797 | str = this.toString('hex', 0, max).match(/.{2}/g).join(' ')
|
798 | if (this.length > max) str += ' ... '
|
799 | }
|
800 | return '<Buffer ' + str + '>'
|
801 | }
|
802 |
|
803 | Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) {
|
804 | if (!Buffer.isBuffer(target)) {
|
805 | throw new TypeError('Argument must be a Buffer')
|
806 | }
|
807 |
|
808 | if (start === undefined) {
|
809 | start = 0
|
810 | }
|
811 | if (end === undefined) {
|
812 | end = target ? target.length : 0
|
813 | }
|
814 | if (thisStart === undefined) {
|
815 | thisStart = 0
|
816 | }
|
817 | if (thisEnd === undefined) {
|
818 | thisEnd = this.length
|
819 | }
|
820 |
|
821 | if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) {
|
822 | throw new RangeError('out of range index')
|
823 | }
|
824 |
|
825 | if (thisStart >= thisEnd && start >= end) {
|
826 | return 0
|
827 | }
|
828 | if (thisStart >= thisEnd) {
|
829 | return -1
|
830 | }
|
831 | if (start >= end) {
|
832 | return 1
|
833 | }
|
834 |
|
835 | start >>>= 0
|
836 | end >>>= 0
|
837 | thisStart >>>= 0
|
838 | thisEnd >>>= 0
|
839 |
|
840 | if (this === target) return 0
|
841 |
|
842 | var x = thisEnd - thisStart
|
843 | var y = end - start
|
844 | var len = Math.min(x, y)
|
845 |
|
846 | var thisCopy = this.slice(thisStart, thisEnd)
|
847 | var targetCopy = target.slice(start, end)
|
848 |
|
849 | for (var i = 0; i < len; ++i) {
|
850 | if (thisCopy[i] !== targetCopy[i]) {
|
851 | x = thisCopy[i]
|
852 | y = targetCopy[i]
|
853 | break
|
854 | }
|
855 | }
|
856 |
|
857 | if (x < y) return -1
|
858 | if (y < x) return 1
|
859 | return 0
|
860 | }
|
861 |
|
862 |
|
863 |
|
864 |
|
865 |
|
866 |
|
867 |
|
868 |
|
869 |
|
870 |
|
871 | function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) {
|
872 |
|
873 | if (buffer.length === 0) return -1
|
874 |
|
875 |
|
876 | if (typeof byteOffset === 'string') {
|
877 | encoding = byteOffset
|
878 | byteOffset = 0
|
879 | } else if (byteOffset > 0x7fffffff) {
|
880 | byteOffset = 0x7fffffff
|
881 | } else if (byteOffset < -0x80000000) {
|
882 | byteOffset = -0x80000000
|
883 | }
|
884 | byteOffset = +byteOffset
|
885 | if (isNaN(byteOffset)) {
|
886 |
|
887 | byteOffset = dir ? 0 : (buffer.length - 1)
|
888 | }
|
889 |
|
890 |
|
891 | if (byteOffset < 0) byteOffset = buffer.length + byteOffset
|
892 | if (byteOffset >= buffer.length) {
|
893 | if (dir) return -1
|
894 | else byteOffset = buffer.length - 1
|
895 | } else if (byteOffset < 0) {
|
896 | if (dir) byteOffset = 0
|
897 | else return -1
|
898 | }
|
899 |
|
900 |
|
901 | if (typeof val === 'string') {
|
902 | val = Buffer.from(val, encoding)
|
903 | }
|
904 |
|
905 |
|
906 | if (Buffer.isBuffer(val)) {
|
907 |
|
908 | if (val.length === 0) {
|
909 | return -1
|
910 | }
|
911 | return arrayIndexOf(buffer, val, byteOffset, encoding, dir)
|
912 | } else if (typeof val === 'number') {
|
913 | val = val & 0xFF
|
914 | if (Buffer.TYPED_ARRAY_SUPPORT &&
|
915 | typeof Uint8Array.prototype.indexOf === 'function') {
|
916 | if (dir) {
|
917 | return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset)
|
918 | } else {
|
919 | return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset)
|
920 | }
|
921 | }
|
922 | return arrayIndexOf(buffer, [ val ], byteOffset, encoding, dir)
|
923 | }
|
924 |
|
925 | throw new TypeError('val must be string, number or Buffer')
|
926 | }
|
927 |
|
928 | function arrayIndexOf (arr, val, byteOffset, encoding, dir) {
|
929 | var indexSize = 1
|
930 | var arrLength = arr.length
|
931 | var valLength = val.length
|
932 |
|
933 | if (encoding !== undefined) {
|
934 | encoding = String(encoding).toLowerCase()
|
935 | if (encoding === 'ucs2' || encoding === 'ucs-2' ||
|
936 | encoding === 'utf16le' || encoding === 'utf-16le') {
|
937 | if (arr.length < 2 || val.length < 2) {
|
938 | return -1
|
939 | }
|
940 | indexSize = 2
|
941 | arrLength /= 2
|
942 | valLength /= 2
|
943 | byteOffset /= 2
|
944 | }
|
945 | }
|
946 |
|
947 | function read (buf, i) {
|
948 | if (indexSize === 1) {
|
949 | return buf[i]
|
950 | } else {
|
951 | return buf.readUInt16BE(i * indexSize)
|
952 | }
|
953 | }
|
954 |
|
955 | var i
|
956 | if (dir) {
|
957 | var foundIndex = -1
|
958 | for (i = byteOffset; i < arrLength; i++) {
|
959 | if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) {
|
960 | if (foundIndex === -1) foundIndex = i
|
961 | if (i - foundIndex + 1 === valLength) return foundIndex * indexSize
|
962 | } else {
|
963 | if (foundIndex !== -1) i -= i - foundIndex
|
964 | foundIndex = -1
|
965 | }
|
966 | }
|
967 | } else {
|
968 | if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength
|
969 | for (i = byteOffset; i >= 0; i--) {
|
970 | var found = true
|
971 | for (var j = 0; j < valLength; j++) {
|
972 | if (read(arr, i + j) !== read(val, j)) {
|
973 | found = false
|
974 | break
|
975 | }
|
976 | }
|
977 | if (found) return i
|
978 | }
|
979 | }
|
980 |
|
981 | return -1
|
982 | }
|
983 |
|
984 | Buffer.prototype.includes = function includes (val, byteOffset, encoding) {
|
985 | return this.indexOf(val, byteOffset, encoding) !== -1
|
986 | }
|
987 |
|
988 | Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) {
|
989 | return bidirectionalIndexOf(this, val, byteOffset, encoding, true)
|
990 | }
|
991 |
|
992 | Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) {
|
993 | return bidirectionalIndexOf(this, val, byteOffset, encoding, false)
|
994 | }
|
995 |
|
996 | function hexWrite (buf, string, offset, length) {
|
997 | offset = Number(offset) || 0
|
998 | var remaining = buf.length - offset
|
999 | if (!length) {
|
1000 | length = remaining
|
1001 | } else {
|
1002 | length = Number(length)
|
1003 | if (length > remaining) {
|
1004 | length = remaining
|
1005 | }
|
1006 | }
|
1007 |
|
1008 |
|
1009 | var strLen = string.length
|
1010 | if (strLen % 2 !== 0) throw new TypeError('Invalid hex string')
|
1011 |
|
1012 | if (length > strLen / 2) {
|
1013 | length = strLen / 2
|
1014 | }
|
1015 | for (var i = 0; i < length; ++i) {
|
1016 | var parsed = parseInt(string.substr(i * 2, 2), 16)
|
1017 | if (isNaN(parsed)) return i
|
1018 | buf[offset + i] = parsed
|
1019 | }
|
1020 | return i
|
1021 | }
|
1022 |
|
1023 | function utf8Write (buf, string, offset, length) {
|
1024 | return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length)
|
1025 | }
|
1026 |
|
1027 | function asciiWrite (buf, string, offset, length) {
|
1028 | return blitBuffer(asciiToBytes(string), buf, offset, length)
|
1029 | }
|
1030 |
|
1031 | function latin1Write (buf, string, offset, length) {
|
1032 | return asciiWrite(buf, string, offset, length)
|
1033 | }
|
1034 |
|
1035 | function base64Write (buf, string, offset, length) {
|
1036 | return blitBuffer(base64ToBytes(string), buf, offset, length)
|
1037 | }
|
1038 |
|
1039 | function ucs2Write (buf, string, offset, length) {
|
1040 | return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length)
|
1041 | }
|
1042 |
|
1043 | Buffer.prototype.write = function write (string, offset, length, encoding) {
|
1044 |
|
1045 | if (offset === undefined) {
|
1046 | encoding = 'utf8'
|
1047 | length = this.length
|
1048 | offset = 0
|
1049 |
|
1050 | } else if (length === undefined && typeof offset === 'string') {
|
1051 | encoding = offset
|
1052 | length = this.length
|
1053 | offset = 0
|
1054 |
|
1055 | } else if (isFinite(offset)) {
|
1056 | offset = offset | 0
|
1057 | if (isFinite(length)) {
|
1058 | length = length | 0
|
1059 | if (encoding === undefined) encoding = 'utf8'
|
1060 | } else {
|
1061 | encoding = length
|
1062 | length = undefined
|
1063 | }
|
1064 |
|
1065 | } else {
|
1066 | throw new Error(
|
1067 | 'Buffer.write(string, encoding, offset[, length]) is no longer supported'
|
1068 | )
|
1069 | }
|
1070 |
|
1071 | var remaining = this.length - offset
|
1072 | if (length === undefined || length > remaining) length = remaining
|
1073 |
|
1074 | if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) {
|
1075 | throw new RangeError('Attempt to write outside buffer bounds')
|
1076 | }
|
1077 |
|
1078 | if (!encoding) encoding = 'utf8'
|
1079 |
|
1080 | var loweredCase = false
|
1081 | for (;;) {
|
1082 | switch (encoding) {
|
1083 | case 'hex':
|
1084 | return hexWrite(this, string, offset, length)
|
1085 |
|
1086 | case 'utf8':
|
1087 | case 'utf-8':
|
1088 | return utf8Write(this, string, offset, length)
|
1089 |
|
1090 | case 'ascii':
|
1091 | return asciiWrite(this, string, offset, length)
|
1092 |
|
1093 | case 'latin1':
|
1094 | case 'binary':
|
1095 | return latin1Write(this, string, offset, length)
|
1096 |
|
1097 | case 'base64':
|
1098 |
|
1099 | return base64Write(this, string, offset, length)
|
1100 |
|
1101 | case 'ucs2':
|
1102 | case 'ucs-2':
|
1103 | case 'utf16le':
|
1104 | case 'utf-16le':
|
1105 | return ucs2Write(this, string, offset, length)
|
1106 |
|
1107 | default:
|
1108 | if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding)
|
1109 | encoding = ('' + encoding).toLowerCase()
|
1110 | loweredCase = true
|
1111 | }
|
1112 | }
|
1113 | }
|
1114 |
|
1115 | Buffer.prototype.toJSON = function toJSON () {
|
1116 | return {
|
1117 | type: 'Buffer',
|
1118 | data: Array.prototype.slice.call(this._arr || this, 0)
|
1119 | }
|
1120 | }
|
1121 |
|
1122 | function base64Slice (buf, start, end) {
|
1123 | if (start === 0 && end === buf.length) {
|
1124 | return base64.fromByteArray(buf)
|
1125 | } else {
|
1126 | return base64.fromByteArray(buf.slice(start, end))
|
1127 | }
|
1128 | }
|
1129 |
|
1130 | function utf8Slice (buf, start, end) {
|
1131 | end = Math.min(buf.length, end)
|
1132 | var res = []
|
1133 |
|
1134 | var i = start
|
1135 | while (i < end) {
|
1136 | var firstByte = buf[i]
|
1137 | var codePoint = null
|
1138 | var bytesPerSequence = (firstByte > 0xEF) ? 4
|
1139 | : (firstByte > 0xDF) ? 3
|
1140 | : (firstByte > 0xBF) ? 2
|
1141 | : 1
|
1142 |
|
1143 | if (i + bytesPerSequence <= end) {
|
1144 | var secondByte, thirdByte, fourthByte, tempCodePoint
|
1145 |
|
1146 | switch (bytesPerSequence) {
|
1147 | case 1:
|
1148 | if (firstByte < 0x80) {
|
1149 | codePoint = firstByte
|
1150 | }
|
1151 | break
|
1152 | case 2:
|
1153 | secondByte = buf[i + 1]
|
1154 | if ((secondByte & 0xC0) === 0x80) {
|
1155 | tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F)
|
1156 | if (tempCodePoint > 0x7F) {
|
1157 | codePoint = tempCodePoint
|
1158 | }
|
1159 | }
|
1160 | break
|
1161 | case 3:
|
1162 | secondByte = buf[i + 1]
|
1163 | thirdByte = buf[i + 2]
|
1164 | if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) {
|
1165 | tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F)
|
1166 | if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) {
|
1167 | codePoint = tempCodePoint
|
1168 | }
|
1169 | }
|
1170 | break
|
1171 | case 4:
|
1172 | secondByte = buf[i + 1]
|
1173 | thirdByte = buf[i + 2]
|
1174 | fourthByte = buf[i + 3]
|
1175 | if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) {
|
1176 | tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F)
|
1177 | if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) {
|
1178 | codePoint = tempCodePoint
|
1179 | }
|
1180 | }
|
1181 | }
|
1182 | }
|
1183 |
|
1184 | if (codePoint === null) {
|
1185 |
|
1186 |
|
1187 | codePoint = 0xFFFD
|
1188 | bytesPerSequence = 1
|
1189 | } else if (codePoint > 0xFFFF) {
|
1190 |
|
1191 | codePoint -= 0x10000
|
1192 | res.push(codePoint >>> 10 & 0x3FF | 0xD800)
|
1193 | codePoint = 0xDC00 | codePoint & 0x3FF
|
1194 | }
|
1195 |
|
1196 | res.push(codePoint)
|
1197 | i += bytesPerSequence
|
1198 | }
|
1199 |
|
1200 | return decodeCodePointsArray(res)
|
1201 | }
|
1202 |
|
1203 |
|
1204 |
|
1205 |
|
1206 | var MAX_ARGUMENTS_LENGTH = 0x1000
|
1207 |
|
1208 | function decodeCodePointsArray (codePoints) {
|
1209 | var len = codePoints.length
|
1210 | if (len <= MAX_ARGUMENTS_LENGTH) {
|
1211 | return String.fromCharCode.apply(String, codePoints)
|
1212 | }
|
1213 |
|
1214 |
|
1215 | var res = ''
|
1216 | var i = 0
|
1217 | while (i < len) {
|
1218 | res += String.fromCharCode.apply(
|
1219 | String,
|
1220 | codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH)
|
1221 | )
|
1222 | }
|
1223 | return res
|
1224 | }
|
1225 |
|
1226 | function asciiSlice (buf, start, end) {
|
1227 | var ret = ''
|
1228 | end = Math.min(buf.length, end)
|
1229 |
|
1230 | for (var i = start; i < end; ++i) {
|
1231 | ret += String.fromCharCode(buf[i] & 0x7F)
|
1232 | }
|
1233 | return ret
|
1234 | }
|
1235 |
|
1236 | function latin1Slice (buf, start, end) {
|
1237 | var ret = ''
|
1238 | end = Math.min(buf.length, end)
|
1239 |
|
1240 | for (var i = start; i < end; ++i) {
|
1241 | ret += String.fromCharCode(buf[i])
|
1242 | }
|
1243 | return ret
|
1244 | }
|
1245 |
|
1246 | function hexSlice (buf, start, end) {
|
1247 | var len = buf.length
|
1248 |
|
1249 | if (!start || start < 0) start = 0
|
1250 | if (!end || end < 0 || end > len) end = len
|
1251 |
|
1252 | var out = ''
|
1253 | for (var i = start; i < end; ++i) {
|
1254 | out += toHex(buf[i])
|
1255 | }
|
1256 | return out
|
1257 | }
|
1258 |
|
1259 | function utf16leSlice (buf, start, end) {
|
1260 | var bytes = buf.slice(start, end)
|
1261 | var res = ''
|
1262 | for (var i = 0; i < bytes.length; i += 2) {
|
1263 | res += String.fromCharCode(bytes[i] + bytes[i + 1] * 256)
|
1264 | }
|
1265 | return res
|
1266 | }
|
1267 |
|
1268 | Buffer.prototype.slice = function slice (start, end) {
|
1269 | var len = this.length
|
1270 | start = ~~start
|
1271 | end = end === undefined ? len : ~~end
|
1272 |
|
1273 | if (start < 0) {
|
1274 | start += len
|
1275 | if (start < 0) start = 0
|
1276 | } else if (start > len) {
|
1277 | start = len
|
1278 | }
|
1279 |
|
1280 | if (end < 0) {
|
1281 | end += len
|
1282 | if (end < 0) end = 0
|
1283 | } else if (end > len) {
|
1284 | end = len
|
1285 | }
|
1286 |
|
1287 | if (end < start) end = start
|
1288 |
|
1289 | var newBuf
|
1290 | if (Buffer.TYPED_ARRAY_SUPPORT) {
|
1291 | newBuf = this.subarray(start, end)
|
1292 | newBuf.__proto__ = Buffer.prototype
|
1293 | } else {
|
1294 | var sliceLen = end - start
|
1295 | newBuf = new Buffer(sliceLen, undefined)
|
1296 | for (var i = 0; i < sliceLen; ++i) {
|
1297 | newBuf[i] = this[i + start]
|
1298 | }
|
1299 | }
|
1300 |
|
1301 | return newBuf
|
1302 | }
|
1303 |
|
1304 |
|
1305 |
|
1306 |
|
1307 | function checkOffset (offset, ext, length) {
|
1308 | if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint')
|
1309 | if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length')
|
1310 | }
|
1311 |
|
1312 | Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) {
|
1313 | offset = offset | 0
|
1314 | byteLength = byteLength | 0
|
1315 | if (!noAssert) checkOffset(offset, byteLength, this.length)
|
1316 |
|
1317 | var val = this[offset]
|
1318 | var mul = 1
|
1319 | var i = 0
|
1320 | while (++i < byteLength && (mul *= 0x100)) {
|
1321 | val += this[offset + i] * mul
|
1322 | }
|
1323 |
|
1324 | return val
|
1325 | }
|
1326 |
|
1327 | Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) {
|
1328 | offset = offset | 0
|
1329 | byteLength = byteLength | 0
|
1330 | if (!noAssert) {
|
1331 | checkOffset(offset, byteLength, this.length)
|
1332 | }
|
1333 |
|
1334 | var val = this[offset + --byteLength]
|
1335 | var mul = 1
|
1336 | while (byteLength > 0 && (mul *= 0x100)) {
|
1337 | val += this[offset + --byteLength] * mul
|
1338 | }
|
1339 |
|
1340 | return val
|
1341 | }
|
1342 |
|
1343 | Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) {
|
1344 | if (!noAssert) checkOffset(offset, 1, this.length)
|
1345 | return this[offset]
|
1346 | }
|
1347 |
|
1348 | Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) {
|
1349 | if (!noAssert) checkOffset(offset, 2, this.length)
|
1350 | return this[offset] | (this[offset + 1] << 8)
|
1351 | }
|
1352 |
|
1353 | Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) {
|
1354 | if (!noAssert) checkOffset(offset, 2, this.length)
|
1355 | return (this[offset] << 8) | this[offset + 1]
|
1356 | }
|
1357 |
|
1358 | Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) {
|
1359 | if (!noAssert) checkOffset(offset, 4, this.length)
|
1360 |
|
1361 | return ((this[offset]) |
|
1362 | (this[offset + 1] << 8) |
|
1363 | (this[offset + 2] << 16)) +
|
1364 | (this[offset + 3] * 0x1000000)
|
1365 | }
|
1366 |
|
1367 | Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) {
|
1368 | if (!noAssert) checkOffset(offset, 4, this.length)
|
1369 |
|
1370 | return (this[offset] * 0x1000000) +
|
1371 | ((this[offset + 1] << 16) |
|
1372 | (this[offset + 2] << 8) |
|
1373 | this[offset + 3])
|
1374 | }
|
1375 |
|
1376 | Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) {
|
1377 | offset = offset | 0
|
1378 | byteLength = byteLength | 0
|
1379 | if (!noAssert) checkOffset(offset, byteLength, this.length)
|
1380 |
|
1381 | var val = this[offset]
|
1382 | var mul = 1
|
1383 | var i = 0
|
1384 | while (++i < byteLength && (mul *= 0x100)) {
|
1385 | val += this[offset + i] * mul
|
1386 | }
|
1387 | mul *= 0x80
|
1388 |
|
1389 | if (val >= mul) val -= Math.pow(2, 8 * byteLength)
|
1390 |
|
1391 | return val
|
1392 | }
|
1393 |
|
1394 | Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) {
|
1395 | offset = offset | 0
|
1396 | byteLength = byteLength | 0
|
1397 | if (!noAssert) checkOffset(offset, byteLength, this.length)
|
1398 |
|
1399 | var i = byteLength
|
1400 | var mul = 1
|
1401 | var val = this[offset + --i]
|
1402 | while (i > 0 && (mul *= 0x100)) {
|
1403 | val += this[offset + --i] * mul
|
1404 | }
|
1405 | mul *= 0x80
|
1406 |
|
1407 | if (val >= mul) val -= Math.pow(2, 8 * byteLength)
|
1408 |
|
1409 | return val
|
1410 | }
|
1411 |
|
1412 | Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) {
|
1413 | if (!noAssert) checkOffset(offset, 1, this.length)
|
1414 | if (!(this[offset] & 0x80)) return (this[offset])
|
1415 | return ((0xff - this[offset] + 1) * -1)
|
1416 | }
|
1417 |
|
1418 | Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) {
|
1419 | if (!noAssert) checkOffset(offset, 2, this.length)
|
1420 | var val = this[offset] | (this[offset + 1] << 8)
|
1421 | return (val & 0x8000) ? val | 0xFFFF0000 : val
|
1422 | }
|
1423 |
|
1424 | Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) {
|
1425 | if (!noAssert) checkOffset(offset, 2, this.length)
|
1426 | var val = this[offset + 1] | (this[offset] << 8)
|
1427 | return (val & 0x8000) ? val | 0xFFFF0000 : val
|
1428 | }
|
1429 |
|
1430 | Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) {
|
1431 | if (!noAssert) checkOffset(offset, 4, this.length)
|
1432 |
|
1433 | return (this[offset]) |
|
1434 | (this[offset + 1] << 8) |
|
1435 | (this[offset + 2] << 16) |
|
1436 | (this[offset + 3] << 24)
|
1437 | }
|
1438 |
|
1439 | Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) {
|
1440 | if (!noAssert) checkOffset(offset, 4, this.length)
|
1441 |
|
1442 | return (this[offset] << 24) |
|
1443 | (this[offset + 1] << 16) |
|
1444 | (this[offset + 2] << 8) |
|
1445 | (this[offset + 3])
|
1446 | }
|
1447 |
|
1448 | Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) {
|
1449 | if (!noAssert) checkOffset(offset, 4, this.length)
|
1450 | return ieee754.read(this, offset, true, 23, 4)
|
1451 | }
|
1452 |
|
1453 | Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) {
|
1454 | if (!noAssert) checkOffset(offset, 4, this.length)
|
1455 | return ieee754.read(this, offset, false, 23, 4)
|
1456 | }
|
1457 |
|
1458 | Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) {
|
1459 | if (!noAssert) checkOffset(offset, 8, this.length)
|
1460 | return ieee754.read(this, offset, true, 52, 8)
|
1461 | }
|
1462 |
|
1463 | Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) {
|
1464 | if (!noAssert) checkOffset(offset, 8, this.length)
|
1465 | return ieee754.read(this, offset, false, 52, 8)
|
1466 | }
|
1467 |
|
1468 | function checkInt (buf, value, offset, ext, max, min) {
|
1469 | if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance')
|
1470 | if (value > max || value < min) throw new RangeError('"value" argument is out of bounds')
|
1471 | if (offset + ext > buf.length) throw new RangeError('Index out of range')
|
1472 | }
|
1473 |
|
1474 | Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) {
|
1475 | value = +value
|
1476 | offset = offset | 0
|
1477 | byteLength = byteLength | 0
|
1478 | if (!noAssert) {
|
1479 | var maxBytes = Math.pow(2, 8 * byteLength) - 1
|
1480 | checkInt(this, value, offset, byteLength, maxBytes, 0)
|
1481 | }
|
1482 |
|
1483 | var mul = 1
|
1484 | var i = 0
|
1485 | this[offset] = value & 0xFF
|
1486 | while (++i < byteLength && (mul *= 0x100)) {
|
1487 | this[offset + i] = (value / mul) & 0xFF
|
1488 | }
|
1489 |
|
1490 | return offset + byteLength
|
1491 | }
|
1492 |
|
1493 | Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) {
|
1494 | value = +value
|
1495 | offset = offset | 0
|
1496 | byteLength = byteLength | 0
|
1497 | if (!noAssert) {
|
1498 | var maxBytes = Math.pow(2, 8 * byteLength) - 1
|
1499 | checkInt(this, value, offset, byteLength, maxBytes, 0)
|
1500 | }
|
1501 |
|
1502 | var i = byteLength - 1
|
1503 | var mul = 1
|
1504 | this[offset + i] = value & 0xFF
|
1505 | while (--i >= 0 && (mul *= 0x100)) {
|
1506 | this[offset + i] = (value / mul) & 0xFF
|
1507 | }
|
1508 |
|
1509 | return offset + byteLength
|
1510 | }
|
1511 |
|
1512 | Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) {
|
1513 | value = +value
|
1514 | offset = offset | 0
|
1515 | if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0)
|
1516 | if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
|
1517 | this[offset] = (value & 0xff)
|
1518 | return offset + 1
|
1519 | }
|
1520 |
|
1521 | function objectWriteUInt16 (buf, value, offset, littleEndian) {
|
1522 | if (value < 0) value = 0xffff + value + 1
|
1523 | for (var i = 0, j = Math.min(buf.length - offset, 2); i < j; ++i) {
|
1524 | buf[offset + i] = (value & (0xff << (8 * (littleEndian ? i : 1 - i)))) >>>
|
1525 | (littleEndian ? i : 1 - i) * 8
|
1526 | }
|
1527 | }
|
1528 |
|
1529 | Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) {
|
1530 | value = +value
|
1531 | offset = offset | 0
|
1532 | if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
|
1533 | if (Buffer.TYPED_ARRAY_SUPPORT) {
|
1534 | this[offset] = (value & 0xff)
|
1535 | this[offset + 1] = (value >>> 8)
|
1536 | } else {
|
1537 | objectWriteUInt16(this, value, offset, true)
|
1538 | }
|
1539 | return offset + 2
|
1540 | }
|
1541 |
|
1542 | Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) {
|
1543 | value = +value
|
1544 | offset = offset | 0
|
1545 | if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0)
|
1546 | if (Buffer.TYPED_ARRAY_SUPPORT) {
|
1547 | this[offset] = (value >>> 8)
|
1548 | this[offset + 1] = (value & 0xff)
|
1549 | } else {
|
1550 | objectWriteUInt16(this, value, offset, false)
|
1551 | }
|
1552 | return offset + 2
|
1553 | }
|
1554 |
|
1555 | function objectWriteUInt32 (buf, value, offset, littleEndian) {
|
1556 | if (value < 0) value = 0xffffffff + value + 1
|
1557 | for (var i = 0, j = Math.min(buf.length - offset, 4); i < j; ++i) {
|
1558 | buf[offset + i] = (value >>> (littleEndian ? i : 3 - i) * 8) & 0xff
|
1559 | }
|
1560 | }
|
1561 |
|
1562 | Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) {
|
1563 | value = +value
|
1564 | offset = offset | 0
|
1565 | if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
|
1566 | if (Buffer.TYPED_ARRAY_SUPPORT) {
|
1567 | this[offset + 3] = (value >>> 24)
|
1568 | this[offset + 2] = (value >>> 16)
|
1569 | this[offset + 1] = (value >>> 8)
|
1570 | this[offset] = (value & 0xff)
|
1571 | } else {
|
1572 | objectWriteUInt32(this, value, offset, true)
|
1573 | }
|
1574 | return offset + 4
|
1575 | }
|
1576 |
|
1577 | Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) {
|
1578 | value = +value
|
1579 | offset = offset | 0
|
1580 | if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0)
|
1581 | if (Buffer.TYPED_ARRAY_SUPPORT) {
|
1582 | this[offset] = (value >>> 24)
|
1583 | this[offset + 1] = (value >>> 16)
|
1584 | this[offset + 2] = (value >>> 8)
|
1585 | this[offset + 3] = (value & 0xff)
|
1586 | } else {
|
1587 | objectWriteUInt32(this, value, offset, false)
|
1588 | }
|
1589 | return offset + 4
|
1590 | }
|
1591 |
|
1592 | Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) {
|
1593 | value = +value
|
1594 | offset = offset | 0
|
1595 | if (!noAssert) {
|
1596 | var limit = Math.pow(2, 8 * byteLength - 1)
|
1597 |
|
1598 | checkInt(this, value, offset, byteLength, limit - 1, -limit)
|
1599 | }
|
1600 |
|
1601 | var i = 0
|
1602 | var mul = 1
|
1603 | var sub = 0
|
1604 | this[offset] = value & 0xFF
|
1605 | while (++i < byteLength && (mul *= 0x100)) {
|
1606 | if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) {
|
1607 | sub = 1
|
1608 | }
|
1609 | this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
|
1610 | }
|
1611 |
|
1612 | return offset + byteLength
|
1613 | }
|
1614 |
|
1615 | Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) {
|
1616 | value = +value
|
1617 | offset = offset | 0
|
1618 | if (!noAssert) {
|
1619 | var limit = Math.pow(2, 8 * byteLength - 1)
|
1620 |
|
1621 | checkInt(this, value, offset, byteLength, limit - 1, -limit)
|
1622 | }
|
1623 |
|
1624 | var i = byteLength - 1
|
1625 | var mul = 1
|
1626 | var sub = 0
|
1627 | this[offset + i] = value & 0xFF
|
1628 | while (--i >= 0 && (mul *= 0x100)) {
|
1629 | if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) {
|
1630 | sub = 1
|
1631 | }
|
1632 | this[offset + i] = ((value / mul) >> 0) - sub & 0xFF
|
1633 | }
|
1634 |
|
1635 | return offset + byteLength
|
1636 | }
|
1637 |
|
1638 | Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) {
|
1639 | value = +value
|
1640 | offset = offset | 0
|
1641 | if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80)
|
1642 | if (!Buffer.TYPED_ARRAY_SUPPORT) value = Math.floor(value)
|
1643 | if (value < 0) value = 0xff + value + 1
|
1644 | this[offset] = (value & 0xff)
|
1645 | return offset + 1
|
1646 | }
|
1647 |
|
1648 | Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) {
|
1649 | value = +value
|
1650 | offset = offset | 0
|
1651 | if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
|
1652 | if (Buffer.TYPED_ARRAY_SUPPORT) {
|
1653 | this[offset] = (value & 0xff)
|
1654 | this[offset + 1] = (value >>> 8)
|
1655 | } else {
|
1656 | objectWriteUInt16(this, value, offset, true)
|
1657 | }
|
1658 | return offset + 2
|
1659 | }
|
1660 |
|
1661 | Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) {
|
1662 | value = +value
|
1663 | offset = offset | 0
|
1664 | if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000)
|
1665 | if (Buffer.TYPED_ARRAY_SUPPORT) {
|
1666 | this[offset] = (value >>> 8)
|
1667 | this[offset + 1] = (value & 0xff)
|
1668 | } else {
|
1669 | objectWriteUInt16(this, value, offset, false)
|
1670 | }
|
1671 | return offset + 2
|
1672 | }
|
1673 |
|
1674 | Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) {
|
1675 | value = +value
|
1676 | offset = offset | 0
|
1677 | if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
|
1678 | if (Buffer.TYPED_ARRAY_SUPPORT) {
|
1679 | this[offset] = (value & 0xff)
|
1680 | this[offset + 1] = (value >>> 8)
|
1681 | this[offset + 2] = (value >>> 16)
|
1682 | this[offset + 3] = (value >>> 24)
|
1683 | } else {
|
1684 | objectWriteUInt32(this, value, offset, true)
|
1685 | }
|
1686 | return offset + 4
|
1687 | }
|
1688 |
|
1689 | Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) {
|
1690 | value = +value
|
1691 | offset = offset | 0
|
1692 | if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000)
|
1693 | if (value < 0) value = 0xffffffff + value + 1
|
1694 | if (Buffer.TYPED_ARRAY_SUPPORT) {
|
1695 | this[offset] = (value >>> 24)
|
1696 | this[offset + 1] = (value >>> 16)
|
1697 | this[offset + 2] = (value >>> 8)
|
1698 | this[offset + 3] = (value & 0xff)
|
1699 | } else {
|
1700 | objectWriteUInt32(this, value, offset, false)
|
1701 | }
|
1702 | return offset + 4
|
1703 | }
|
1704 |
|
1705 | function checkIEEE754 (buf, value, offset, ext, max, min) {
|
1706 | if (offset + ext > buf.length) throw new RangeError('Index out of range')
|
1707 | if (offset < 0) throw new RangeError('Index out of range')
|
1708 | }
|
1709 |
|
1710 | function writeFloat (buf, value, offset, littleEndian, noAssert) {
|
1711 | if (!noAssert) {
|
1712 | checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38)
|
1713 | }
|
1714 | ieee754.write(buf, value, offset, littleEndian, 23, 4)
|
1715 | return offset + 4
|
1716 | }
|
1717 |
|
1718 | Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) {
|
1719 | return writeFloat(this, value, offset, true, noAssert)
|
1720 | }
|
1721 |
|
1722 | Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) {
|
1723 | return writeFloat(this, value, offset, false, noAssert)
|
1724 | }
|
1725 |
|
1726 | function writeDouble (buf, value, offset, littleEndian, noAssert) {
|
1727 | if (!noAssert) {
|
1728 | checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308)
|
1729 | }
|
1730 | ieee754.write(buf, value, offset, littleEndian, 52, 8)
|
1731 | return offset + 8
|
1732 | }
|
1733 |
|
1734 | Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) {
|
1735 | return writeDouble(this, value, offset, true, noAssert)
|
1736 | }
|
1737 |
|
1738 | Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) {
|
1739 | return writeDouble(this, value, offset, false, noAssert)
|
1740 | }
|
1741 |
|
1742 |
|
1743 | Buffer.prototype.copy = function copy (target, targetStart, start, end) {
|
1744 | if (!start) start = 0
|
1745 | if (!end && end !== 0) end = this.length
|
1746 | if (targetStart >= target.length) targetStart = target.length
|
1747 | if (!targetStart) targetStart = 0
|
1748 | if (end > 0 && end < start) end = start
|
1749 |
|
1750 |
|
1751 | if (end === start) return 0
|
1752 | if (target.length === 0 || this.length === 0) return 0
|
1753 |
|
1754 |
|
1755 | if (targetStart < 0) {
|
1756 | throw new RangeError('targetStart out of bounds')
|
1757 | }
|
1758 | if (start < 0 || start >= this.length) throw new RangeError('sourceStart out of bounds')
|
1759 | if (end < 0) throw new RangeError('sourceEnd out of bounds')
|
1760 |
|
1761 |
|
1762 | if (end > this.length) end = this.length
|
1763 | if (target.length - targetStart < end - start) {
|
1764 | end = target.length - targetStart + start
|
1765 | }
|
1766 |
|
1767 | var len = end - start
|
1768 | var i
|
1769 |
|
1770 | if (this === target && start < targetStart && targetStart < end) {
|
1771 |
|
1772 | for (i = len - 1; i >= 0; --i) {
|
1773 | target[i + targetStart] = this[i + start]
|
1774 | }
|
1775 | } else if (len < 1000 || !Buffer.TYPED_ARRAY_SUPPORT) {
|
1776 |
|
1777 | for (i = 0; i < len; ++i) {
|
1778 | target[i + targetStart] = this[i + start]
|
1779 | }
|
1780 | } else {
|
1781 | Uint8Array.prototype.set.call(
|
1782 | target,
|
1783 | this.subarray(start, start + len),
|
1784 | targetStart
|
1785 | )
|
1786 | }
|
1787 |
|
1788 | return len
|
1789 | }
|
1790 |
|
1791 |
|
1792 |
|
1793 |
|
1794 |
|
1795 | Buffer.prototype.fill = function fill (val, start, end, encoding) {
|
1796 |
|
1797 | if (typeof val === 'string') {
|
1798 | if (typeof start === 'string') {
|
1799 | encoding = start
|
1800 | start = 0
|
1801 | end = this.length
|
1802 | } else if (typeof end === 'string') {
|
1803 | encoding = end
|
1804 | end = this.length
|
1805 | }
|
1806 | if (val.length === 1) {
|
1807 | var code = val.charCodeAt(0)
|
1808 | if (code < 256) {
|
1809 | val = code
|
1810 | }
|
1811 | }
|
1812 | if (encoding !== undefined && typeof encoding !== 'string') {
|
1813 | throw new TypeError('encoding must be a string')
|
1814 | }
|
1815 | if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) {
|
1816 | throw new TypeError('Unknown encoding: ' + encoding)
|
1817 | }
|
1818 | } else if (typeof val === 'number') {
|
1819 | val = val & 255
|
1820 | }
|
1821 |
|
1822 |
|
1823 | if (start < 0 || this.length < start || this.length < end) {
|
1824 | throw new RangeError('Out of range index')
|
1825 | }
|
1826 |
|
1827 | if (end <= start) {
|
1828 | return this
|
1829 | }
|
1830 |
|
1831 | start = start >>> 0
|
1832 | end = end === undefined ? this.length : end >>> 0
|
1833 |
|
1834 | if (!val) val = 0
|
1835 |
|
1836 | var i
|
1837 | if (typeof val === 'number') {
|
1838 | for (i = start; i < end; ++i) {
|
1839 | this[i] = val
|
1840 | }
|
1841 | } else {
|
1842 | var bytes = Buffer.isBuffer(val)
|
1843 | ? val
|
1844 | : utf8ToBytes(new Buffer(val, encoding).toString())
|
1845 | var len = bytes.length
|
1846 | for (i = 0; i < end - start; ++i) {
|
1847 | this[i + start] = bytes[i % len]
|
1848 | }
|
1849 | }
|
1850 |
|
1851 | return this
|
1852 | }
|
1853 |
|
1854 |
|
1855 |
|
1856 |
|
1857 | var INVALID_BASE64_RE = /[^+\/0-9A-Za-z-_]/g
|
1858 |
|
1859 | function base64clean (str) {
|
1860 |
|
1861 | str = stringtrim(str).replace(INVALID_BASE64_RE, '')
|
1862 |
|
1863 | if (str.length < 2) return ''
|
1864 |
|
1865 | while (str.length % 4 !== 0) {
|
1866 | str = str + '='
|
1867 | }
|
1868 | return str
|
1869 | }
|
1870 |
|
1871 | function stringtrim (str) {
|
1872 | if (str.trim) return str.trim()
|
1873 | return str.replace(/^\s+|\s+$/g, '')
|
1874 | }
|
1875 |
|
1876 | function toHex (n) {
|
1877 | if (n < 16) return '0' + n.toString(16)
|
1878 | return n.toString(16)
|
1879 | }
|
1880 |
|
1881 | function utf8ToBytes (string, units) {
|
1882 | units = units || Infinity
|
1883 | var codePoint
|
1884 | var length = string.length
|
1885 | var leadSurrogate = null
|
1886 | var bytes = []
|
1887 |
|
1888 | for (var i = 0; i < length; ++i) {
|
1889 | codePoint = string.charCodeAt(i)
|
1890 |
|
1891 |
|
1892 | if (codePoint > 0xD7FF && codePoint < 0xE000) {
|
1893 |
|
1894 | if (!leadSurrogate) {
|
1895 |
|
1896 | if (codePoint > 0xDBFF) {
|
1897 |
|
1898 | if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
|
1899 | continue
|
1900 | } else if (i + 1 === length) {
|
1901 |
|
1902 | if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
|
1903 | continue
|
1904 | }
|
1905 |
|
1906 |
|
1907 | leadSurrogate = codePoint
|
1908 |
|
1909 | continue
|
1910 | }
|
1911 |
|
1912 |
|
1913 | if (codePoint < 0xDC00) {
|
1914 | if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
|
1915 | leadSurrogate = codePoint
|
1916 | continue
|
1917 | }
|
1918 |
|
1919 |
|
1920 | codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000
|
1921 | } else if (leadSurrogate) {
|
1922 |
|
1923 | if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD)
|
1924 | }
|
1925 |
|
1926 | leadSurrogate = null
|
1927 |
|
1928 |
|
1929 | if (codePoint < 0x80) {
|
1930 | if ((units -= 1) < 0) break
|
1931 | bytes.push(codePoint)
|
1932 | } else if (codePoint < 0x800) {
|
1933 | if ((units -= 2) < 0) break
|
1934 | bytes.push(
|
1935 | codePoint >> 0x6 | 0xC0,
|
1936 | codePoint & 0x3F | 0x80
|
1937 | )
|
1938 | } else if (codePoint < 0x10000) {
|
1939 | if ((units -= 3) < 0) break
|
1940 | bytes.push(
|
1941 | codePoint >> 0xC | 0xE0,
|
1942 | codePoint >> 0x6 & 0x3F | 0x80,
|
1943 | codePoint & 0x3F | 0x80
|
1944 | )
|
1945 | } else if (codePoint < 0x110000) {
|
1946 | if ((units -= 4) < 0) break
|
1947 | bytes.push(
|
1948 | codePoint >> 0x12 | 0xF0,
|
1949 | codePoint >> 0xC & 0x3F | 0x80,
|
1950 | codePoint >> 0x6 & 0x3F | 0x80,
|
1951 | codePoint & 0x3F | 0x80
|
1952 | )
|
1953 | } else {
|
1954 | throw new Error('Invalid code point')
|
1955 | }
|
1956 | }
|
1957 |
|
1958 | return bytes
|
1959 | }
|
1960 |
|
1961 | function asciiToBytes (str) {
|
1962 | var byteArray = []
|
1963 | for (var i = 0; i < str.length; ++i) {
|
1964 |
|
1965 | byteArray.push(str.charCodeAt(i) & 0xFF)
|
1966 | }
|
1967 | return byteArray
|
1968 | }
|
1969 |
|
1970 | function utf16leToBytes (str, units) {
|
1971 | var c, hi, lo
|
1972 | var byteArray = []
|
1973 | for (var i = 0; i < str.length; ++i) {
|
1974 | if ((units -= 2) < 0) break
|
1975 |
|
1976 | c = str.charCodeAt(i)
|
1977 | hi = c >> 8
|
1978 | lo = c % 256
|
1979 | byteArray.push(lo)
|
1980 | byteArray.push(hi)
|
1981 | }
|
1982 |
|
1983 | return byteArray
|
1984 | }
|
1985 |
|
1986 | function base64ToBytes (str) {
|
1987 | return base64.toByteArray(base64clean(str))
|
1988 | }
|
1989 |
|
1990 | function blitBuffer (src, dst, offset, length) {
|
1991 | for (var i = 0; i < length; ++i) {
|
1992 | if ((i + offset >= dst.length) || (i >= src.length)) break
|
1993 | dst[i + offset] = src[i]
|
1994 | }
|
1995 | return i
|
1996 | }
|
1997 |
|
1998 | function isnan (val) {
|
1999 | return val !== val
|
2000 | }
|
2001 |
|
2002 | }).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
|
2003 | },{"base64-js":1,"ieee754":2,"isarray":3}]},{},[])("buffer")
|
2004 | });
|