1 |
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2 | export function utf8Encode(str) {
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3 | return unescape(encodeURIComponent(str));
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4 | }
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43 |
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44 | export function utf8Decode(str) {
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45 | return decodeURIComponent(escape(str));
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46 | }
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82 |
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83 | export function safe_add(x, y) {
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84 | var lsw = (x & 0xFFFF) + (y & 0xFFFF),
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85 | msw = (x >> 16) + (y >> 16) + (lsw >> 16);
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86 | return (msw << 16) | (lsw & 0xFFFF);
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87 | }
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88 |
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89 |
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90 |
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91 |
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92 | export function bit_rol(num, cnt) {
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93 | return (num << cnt) | (num >>> (32 - cnt));
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94 | }
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95 |
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96 |
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97 |
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98 |
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99 | export function rstr2hex(input, hexCase?) {
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100 | var hex_tab = hexCase ? '0123456789ABCDEF' : '0123456789abcdef',
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101 | output = '',
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102 | x, i = 0,
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103 | l = input.length;
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104 | for (; i < l; i += 1) {
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105 | x = input.charCodeAt(i);
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106 | output += hex_tab.charAt((x >>> 4) & 0x0F) + hex_tab.charAt(x & 0x0F);
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107 | }
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108 | return output;
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109 | }
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110 |
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111 |
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112 |
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113 |
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114 | export function str2rstr_utf16le(input) {
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115 | var i, l = input.length,
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116 | output = '';
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117 | for (i = 0; i < l; i += 1) {
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118 | output += String.fromCharCode(input.charCodeAt(i) & 0xFF, (input.charCodeAt(i) >>> 8) & 0xFF);
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119 | }
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120 | return output;
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121 | }
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122 |
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123 | export function str2rstr_utf16be(input) {
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124 | var i, l = input.length,
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125 | output = '';
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126 | for (i = 0; i < l; i += 1) {
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127 | output += String.fromCharCode((input.charCodeAt(i) >>> 8) & 0xFF, input.charCodeAt(i) & 0xFF);
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128 | }
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129 | return output;
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130 | }
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131 |
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132 |
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133 |
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134 |
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135 | export function binb2rstr(input) {
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136 | var i, l = input.length * 32,
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137 | output = '';
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138 | for (i = 0; i < l; i += 8) {
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139 | output += String.fromCharCode((input[i >> 5] >>> (24 - i % 32)) & 0xFF);
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140 | }
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141 | return output;
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142 | }
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143 |
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144 |
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145 |
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146 |
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147 | export function binl2rstr(input) {
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148 | var i, l = input.length * 32,
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149 | output = '';
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150 | for (i = 0; i < l; i += 8) {
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151 | output += String.fromCharCode((input[i >> 5] >>> (i % 32)) & 0xFF);
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152 | }
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153 | return output;
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154 | }
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155 |
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156 |
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157 |
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158 |
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159 |
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160 | export function rstr2binl(input) {
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161 | var i, l = input.length * 8,
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162 | output = Array(input.length >> 2),
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163 | lo = output.length;
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164 | for (i = 0; i < lo; i += 1) {
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165 | output[i] = 0;
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166 | }
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167 | for (i = 0; i < l; i += 8) {
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168 | output[i >> 5] |= (input.charCodeAt(i / 8) & 0xFF) << (i % 32);
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169 | }
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170 | return output;
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171 | }
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172 |
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173 |
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174 |
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175 |
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176 |
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177 | export function rstr2binb(input) {
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178 | var i, l = input.length * 8,
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179 | output = Array(input.length >> 2),
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180 | lo = output.length;
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181 | for (i = 0; i < lo; i += 1) {
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182 | output[i] = 0;
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183 | }
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184 | for (i = 0; i < l; i += 8) {
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185 | output[i >> 5] |= (input.charCodeAt(i / 8) & 0xFF) << (24 - i % 32);
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186 | }
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187 | return output;
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188 | }
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189 |
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190 |
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191 |
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192 |
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193 | export function rstr2any(input, encoding) {
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194 | var divisor = encoding.length,
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195 | remainders = Array(),
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196 | i, q, x, ld, quotient, dividend, output, full_length;
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197 |
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198 |
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199 | dividend = Array(Math.ceil(input.length / 2));
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200 | ld = dividend.length;
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201 | for (i = 0; i < ld; i += 1) {
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202 | dividend[i] = (input.charCodeAt(i * 2) << 8) | input.charCodeAt(i * 2 + 1);
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203 | }
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204 |
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205 | |
206 |
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207 |
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208 |
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209 |
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210 |
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211 | while (dividend.length > 0) {
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212 | quotient = Array();
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213 | x = 0;
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214 | for (i = 0; i < dividend.length; i += 1) {
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215 | x = (x << 16) + dividend[i];
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216 | q = Math.floor(x / divisor);
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217 | x -= q * divisor;
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218 | if (quotient.length > 0 || q > 0) {
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219 | quotient[quotient.length] = q;
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220 | }
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221 | }
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222 | remainders[remainders.length] = x;
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223 | dividend = quotient;
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224 | }
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225 |
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226 |
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227 | output = '';
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228 | for (i = remainders.length - 1; i >= 0; i--) {
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229 | output += encoding.charAt(remainders[i]);
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230 | }
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231 |
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232 |
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233 | full_length = Math.ceil(input.length * 8 / (Math.log(encoding.length) / Math.log(2)));
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234 | for (i = output.length; i < full_length; i += 1) {
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235 | output = encoding[0] + output;
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236 | }
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237 | return output;
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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 | export function rstr2b64(input, b64pad='=') {
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244 | const tab = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
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245 | let output = '',
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246 | len = input.length,
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247 | i, j, triplet;
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248 |
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249 | for (i = 0; i < len; i += 3) {
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250 | triplet = (input.charCodeAt(i) << 16) | (i + 1 < len ? input.charCodeAt(i + 1) << 8 : 0) | (i + 2 < len ? input.charCodeAt(i + 2) : 0);
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251 | for (j = 0; j < 4; j += 1) {
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252 | if (i * 8 + j * 6 > input.length * 8) {
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253 | output += b64pad;
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254 | } else {
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255 | output += tab.charAt((triplet >>> 6 * (3 - j)) & 0x3F);
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256 | }
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257 | }
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258 | }
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259 | return output;
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260 | }
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