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1 /*jslint indent: 2, browser: true, bitwise: true, plusplus: true */ |
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2 var twemoji = (function ( |
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3 /*! Copyright Twitter Inc. and other contributors. Licensed under MIT *//* |
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4 https://github.com/twitter/twemoji/blob/gh-pages/LICENSE |
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5 */ |
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6 |
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7 // WARNING: this file is generated automatically via |
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8 // `node twemoji-generator.js` |
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9 // please update its `createTwemoji` function |
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10 // at the bottom of the same file instead. |
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11 |
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12 ) { |
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13 'use strict'; |
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14 |
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15 /*jshint maxparams:4 */ |
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16 |
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17 var |
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18 // the exported module object |
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19 twemoji = { |
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20 |
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21 |
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22 ///////////////////////// |
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23 // properties // |
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24 ///////////////////////// |
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25 |
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26 // default assets url, by default will be Twitter Inc. CDN |
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27 base: (location.protocol === 'https:' ? 'https:' : 'http:') + |
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28 '//twemoji.maxcdn.com/', |
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29 |
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30 // default assets file extensions, by default '.png' |
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31 ext: '.png', |
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32 |
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33 // default assets/folder size, by default "36x36" |
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34 // available via Twitter CDN: 16, 36, 72 |
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35 size: '36x36', |
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36 |
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37 // default class name, by default 'emoji' |
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38 className: 'emoji', |
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39 |
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40 // basic utilities / helpers to convert code points |
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41 // to JavaScript surrogates and vice versa |
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42 convert: { |
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43 |
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44 /** |
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45 * Given an HEX codepoint, returns UTF16 surrogate pairs. |
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46 * |
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47 * @param string generic codepoint, i.e. '1F4A9' |
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48 * @return string codepoint transformed into utf16 surrogates pair, |
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49 * i.e. \uD83D\uDCA9 |
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50 * |
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51 * @example |
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52 * twemoji.convert.fromCodePoint('1f1e8'); |
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53 * // "\ud83c\udde8" |
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54 * |
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55 * '1f1e8-1f1f3'.split('-').map(twemoji.convert.fromCodePoint).join('') |
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56 * // "\ud83c\udde8\ud83c\uddf3" |
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57 */ |
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58 fromCodePoint: fromCodePoint, |
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59 |
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60 /** |
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61 * Given UTF16 surrogate pairs, returns the equivalent HEX codepoint. |
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62 * |
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63 * @param string generic utf16 surrogates pair, i.e. \uD83D\uDCA9 |
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64 * @param string optional separator for double code points, default='-' |
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65 * @return string utf16 transformed into codepoint, i.e. '1F4A9' |
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66 * |
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67 * @example |
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68 * twemoji.convert.toCodePoint('\ud83c\udde8\ud83c\uddf3'); |
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69 * // "1f1e8-1f1f3" |
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70 * |
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71 * twemoji.convert.toCodePoint('\ud83c\udde8\ud83c\uddf3', '~'); |
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72 * // "1f1e8~1f1f3" |
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73 */ |
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74 toCodePoint: toCodePoint |
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75 }, |
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76 |
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77 |
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78 ///////////////////////// |
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79 // methods // |
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80 ///////////////////////// |
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81 |
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82 /** |
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83 * User first: used to remove missing images |
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84 * preserving the original text intent when |
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85 * a fallback for network problems is desired. |
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86 * Automatically added to Image nodes via DOM |
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87 * It could be recycled for string operations via: |
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88 * $('img.emoji').on('error', twemoji.onerror) |
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89 */ |
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90 onerror: function onerror() { |
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91 if (this.parentNode) { |
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92 this.parentNode.replaceChild(createText(this.alt), this); |
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93 } |
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94 }, |
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95 |
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96 /** |
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97 * Main method/logic to generate either <img> tags or HTMLImage nodes. |
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98 * "emojify" a generic text or DOM Element. |
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99 * |
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100 * @overloads |
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101 * |
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102 * String replacement for `innerHTML` or server side operations |
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103 * twemoji.parse(string); |
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104 * twemoji.parse(string, Function); |
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105 * twemoji.parse(string, Object); |
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106 * |
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107 * HTMLElement tree parsing for safer operations over existing DOM |
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108 * twemoji.parse(HTMLElement); |
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109 * twemoji.parse(HTMLElement, Function); |
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110 * twemoji.parse(HTMLElement, Object); |
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111 * |
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112 * @param string|HTMLElement the source to parse and enrich with emoji. |
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113 * |
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114 * string replace emoji matches with <img> tags. |
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115 * Mainly used to inject emoji via `innerHTML` |
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116 * It does **not** parse the string or validate it, |
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117 * it simply replaces found emoji with a tag. |
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118 * NOTE: be sure this won't affect security. |
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119 * |
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120 * HTMLElement walk through the DOM tree and find emoji |
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121 * that are inside **text node only** (nodeType === 3) |
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122 * Mainly used to put emoji in already generated DOM |
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123 * without compromising surrounding nodes and |
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124 * **avoiding** the usage of `innerHTML`. |
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125 * NOTE: Using DOM elements instead of strings should |
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126 * improve security without compromising too much |
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127 * performance compared with a less safe `innerHTML`. |
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128 * |
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129 * @param Function|Object [optional] |
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130 * either the callback that will be invoked or an object |
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131 * with all properties to use per each found emoji. |
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132 * |
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133 * Function if specified, this will be invoked per each emoji |
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134 * that has been found through the RegExp except |
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135 * those follwed by the invariant \uFE0E ("as text"). |
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136 * Once invoked, parameters will be: |
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137 * |
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138 * codePoint:string the lower case HEX code point |
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139 * i.e. "1f4a9" |
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140 * |
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141 * options:Object all info for this parsing operation |
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142 * |
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143 * variant:char the optional \uFE0F ("as image") |
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144 * variant, in case this info |
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145 * is anyhow meaningful. |
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146 * By default this is ignored. |
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147 * |
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148 * If such callback will return a falsy value instead |
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149 * of a valid `src` to use for the image, nothing will |
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150 * actually change for that specific emoji. |
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151 * |
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152 * |
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153 * Object if specified, an object containing the following properties |
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154 * |
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155 * callback Function the callback to invoke per each found emoji. |
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156 * base string the base url, by default twemoji.base |
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157 * ext string the image extension, by default twemoji.ext |
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158 * size string the assets size, by default twemoji.size |
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159 * |
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160 * @example |
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161 * |
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162 * twemoji.parse("I \u2764\uFE0F emoji!"); |
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163 * // I <img class="emoji" draggable="false" alt="❤️" src="/assets/2764.gif"> emoji! |
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164 * |
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165 * |
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166 * twemoji.parse("I \u2764\uFE0F emoji!", function(icon, options, variant) { |
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167 * return '/assets/' + icon + '.gif'; |
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168 * }); |
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169 * // I <img class="emoji" draggable="false" alt="❤️" src="/assets/2764.gif"> emoji! |
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170 * |
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171 * |
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172 * twemoji.parse("I \u2764\uFE0F emoji!", { |
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173 * size: 72, |
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174 * callback: function(icon, options, variant) { |
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175 * return '/assets/' + options.size + '/' + icon + options.ext; |
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176 * } |
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177 * }); |
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178 * // I <img class="emoji" draggable="false" alt="❤️" src="/assets/72x72/2764.png"> emoji! |
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179 * |
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180 */ |
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181 parse: parse, |
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182 |
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183 /** |
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184 * Given a string, invokes the callback argument |
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185 * per each emoji found in such string. |
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186 * This is the most raw version used by |
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187 * the .parse(string) method itself. |
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188 * |
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189 * @param string generic string to parse |
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190 * @param Function a generic callback that will be |
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191 * invoked to replace the content. |
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192 * This calback wil receive standard |
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193 * String.prototype.replace(str, callback) |
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194 * arguments such: |
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195 * callback( |
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196 * match, // the emoji match |
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197 * icon, // the emoji text (same as text) |
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198 * variant // either '\uFE0E' or '\uFE0F', if present |
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199 * ); |
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200 * |
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201 * and others commonly received via replace. |
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202 * |
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203 * NOTE: When the variant \uFE0E is found, remember this is an explicit intent |
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204 * from the user: the emoji should **not** be replaced with an image. |
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205 * In \uFE0F case one, it's the opposite, it should be graphic. |
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206 * This utility convetion is that only \uFE0E are not translated into images. |
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207 */ |
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208 replace: replace, |
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209 |
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210 /** |
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211 * Simplify string tests against emoji. |
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212 * |
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213 * @param string some text that might contain emoji |
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214 * @return boolean true if any emoji was found, false otherwise. |
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215 * |
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216 * @example |
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217 * |
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218 * if (twemoji.test(someContent)) { |
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219 * console.log("emoji All The Things!"); |
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220 * } |
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221 */ |
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222 test: test |
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223 }, |
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224 |
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225 // RegExp based on emoji's official Unicode standards |
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226 // http://www.unicode.org/Public/UNIDATA/EmojiSources.txt |
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227 re = /((?:\ud83c\udde8\ud83c\uddf3|\ud83c\uddfa\ud83c\uddf8|\ud83c\uddf7\ud83c\uddfa|\ud83c\uddf0\ud83c\uddf7|\ud83c\uddef\ud83c\uddf5|\ud83c\uddee\ud83c\uddf9|\ud83c\uddec\ud83c\udde7|\ud83c\uddeb\ud83c\uddf7|\ud83c\uddea\ud83c\uddf8|\ud83c\udde9\ud83c\uddea|\u0039\ufe0f?\u20e3|\u0038\ufe0f?\u20e3|\u0037\ufe0f?\u20e3|\u0036\ufe0f?\u20e3|\u0035\ufe0f?\u20e3|\u0034\ufe0f?\u20e3|\u0033\ufe0f?\u20e3|\u0032\ufe0f?\u20e3|\u0031\ufe0f?\u20e3|\u0030\ufe0f?\u20e3|\u0023\ufe0f?\u20e3|\ud83d\udeb3|\ud83d\udeb1|\ud83d\udeb0|\ud83d\udeaf|\ud83d\udeae|\ud83d\udea6|\ud83d\udea3|\ud83d\udea1|\ud83d\udea0|\ud83d\ude9f|\ud83d\ude9e|\ud83d\ude9d|\ud83d\ude9c|\ud83d\ude9b|\ud83d\ude98|\ud83d\ude96|\ud83d\ude94|\ud83d\ude90|\ud83d\ude8e|\ud83d\ude8d|\ud83d\ude8b|\ud83d\ude8a|\ud83d\ude88|\ud83d\ude86|\ud83d\ude82|\ud83d\ude81|\ud83d\ude36|\ud83d\ude34|\ud83d\ude2f|\ud83d\ude2e|\ud83d\ude2c|\ud83d\ude27|\ud83d\ude26|\ud83d\ude1f|\ud83d\ude1b|\ud83d\ude19|\ud83d\ude17|\ud83d\ude15|\ud83d\ude11|\ud83d\ude10|\ud83d\ude0e|\ud83d\ude08|\ud83d\ude07|\ud83d\ude00|\ud83d\udd67|\ud83d\udd66|\ud83d\udd65|\ud83d\udd64|\ud83d\udd63|\ud83d\udd62|\ud83d\udd61|\ud83d\udd60|\ud83d\udd5f|\ud83d\udd5e|\ud83d\udd5d|\ud83d\udd5c|\ud83d\udd2d|\ud83d\udd2c|\ud83d\udd15|\ud83d\udd09|\ud83d\udd08|\ud83d\udd07|\ud83d\udd06|\ud83d\udd05|\ud83d\udd04|\ud83d\udd02|\ud83d\udd01|\ud83d\udd00|\ud83d\udcf5|\ud83d\udcef|\ud83d\udced|\ud83d\udcec|\ud83d\udcb7|\ud83d\udcb6|\ud83d\udcad|\ud83d\udc6d|\ud83d\udc6c|\ud83d\udc65|\ud83d\udc2a|\ud83d\udc16|\ud83d\udc15|\ud83d\udc13|\ud83d\udc10|\ud83d\udc0f|\ud83d\udc0b|\ud83d\udc0a|\ud83d\udc09|\ud83d\udc08|\ud83d\udc07|\ud83d\udc06|\ud83d\udc05|\ud83d\udc04|\ud83d\udc03|\ud83d\udc02|\ud83d\udc01|\ud83d\udc00|\ud83c\udfe4|\ud83c\udfc9|\ud83c\udfc7|\ud83c\udf7c|\ud83c\udf50|\ud83c\udf4b|\ud83c\udf33|\ud83c\udf32|\ud83c\udf1e|\ud83c\udf1d|\ud83c\udf1c|\ud83c\udf1a|\ud83c\udf18|\ud83c\udccf|\ud83c\udd70|\ud83c\udd71|\ud83c\udd7e|\ud83c\udd8e|\ud83c\udd91|\ud83c\udd92|\ud83c\udd93|\ud83c\udd94|\ud83c\udd95|\ud83c\udd96|\ud83c\udd97|\ud83c\udd98|\ud83c\udd99|\ud83c\udd9a|\ud83d\udc77|\ud83d\udec5|\ud83d\udec4|\ud83d\udec3|\ud83d\udec2|\ud83d\udec1|\ud83d\udebf|\ud83d\udeb8|\ud83d\udeb7|\ud83d\udeb5|\ud83c\ude01|\ud83c\ude02|\ud83c\ude32|\ud83c\ude33|\ud83c\ude34|\ud83c\ude35|\ud83c\ude36|\ud83c\ude37|\ud83c\ude38|\ud83c\ude39|\ud83c\ude3a|\ud83c\ude50|\ud83c\ude51|\ud83c\udf00|\ud83c\udf01|\ud83c\udf02|\ud83c\udf03|\ud83c\udf04|\ud83c\udf05|\ud83c\udf06|\ud83c\udf07|\ud83c\udf08|\ud83c\udf09|\ud83c\udf0a|\ud83c\udf0b|\ud83c\udf0c|\ud83c\udf0f|\ud83c\udf11|\ud83c\udf13|\ud83c\udf14|\ud83c\udf15|\ud83c\udf19|\ud83c\udf1b|\ud83c\udf1f|\ud83c\udf20|\ud83c\udf30|\ud83c\udf31|\ud83c\udf34|\ud83c\udf35|\ud83c\udf37|\ud83c\udf38|\ud83c\udf39|\ud83c\udf3a|\ud83c\udf3b|\ud83c\udf3c|\ud83c\udf3d|\ud83c\udf3e|\ud83c\udf3f|\ud83c\udf40|\ud83c\udf41|\ud83c\udf42|\ud83c\udf43|\ud83c\udf44|\ud83c\udf45|\ud83c\udf46|\ud83c\udf47|\ud83c\udf48|\ud83c\udf49|\ud83c\udf4a|\ud83c\udf4c|\ud83c\udf4d|\ud83c\udf4e|\ud83c\udf4f|\ud83c\udf51|\ud83c\udf52|\ud83c\udf53|\ud83c\udf54|\ud83c\udf55|\ud83c\udf56|\ud83c\udf57|\ud83c\udf58|\ud83c\udf59|\ud83c\udf5a|\ud83c\udf5b|\ud83c\udf5c|\ud83c\udf5d|\ud83c\udf5e|\ud83c\udf5f|\ud83c\udf60|\ud83c\udf61|\ud83c\udf62|\ud83c\udf63|\ud83c\udf64|\ud83c\udf65|\ud83c\udf66|\ud83c\udf67|\ud83c\udf68|\ud83c\udf69|\ud83c\udf6a|\ud83c\udf6b|\ud83c\udf6c|\ud83c\udf6d|\ud83c\udf6e|\ud83c\udf6f|\ud83c\udf70|\ud83c\udf71|\ud83c\udf72|\ud83c\udf73|\ud83c\udf74|\ud83c\udf75|\ud83c\udf76|\ud83c\udf77|\ud83c\udf78|\ud83c\udf79|\ud83c\udf7a|\ud83c\udf7b|\ud83c\udf80|\ud83c\udf81|\ud83c\udf82|\ud83c\udf83|\ud83c\udf84|\ud83c\udf85|\ud83c\udf86|\ud83c\udf87|\ud83c\udf88|\ud83c\udf89|\ud83c\udf8a|\ud83c\udf8b|\ud83c\udf8c|\ud83c\udf8d|\ud83c\udf8e|\ud83c\udf8f|\ud83c\udf90|\ud83c\udf91|\ud83c\udf92|\ud83c\udf93|\ud83c\udfa0|\ud83c\udfa1|\ud83c\udfa2|\ud83c\udfa3|\ud83c\udfa4|\ud83c\udfa5|\ud83c\udfa6|\ud83c\udfa7|\ud83c\udfa8|\ud83c\udfa9|\ud83c\udfaa|\ud83c\udfab|\ud83c\udfac|\ud83c\udfad|\ud83c\udfae|\ud83c\udfaf|\ud83c\udfb0|\ud83c\udfb1|\ud83c\udfb2|\ud83c\udfb3|\ud83c\udfb4|\ud83c\udfb5|\ud83c\udfb6|\ud83c\udfb7|\ud83c\udfb8|\ud83c\udfb9|\ud83c\udfba|\ud83c\udfbb|\ud83c\udfbc|\ud83c\udfbd|\ud83c\udfbe|\ud83c\udfbf|\ud83c\udfc0|\ud83c\udfc1|\ud83c\udfc2|\ud83c\udfc3|\ud83c\udfc4|\ud83c\udfc6|\ud83c\udfc8|\ud83c\udfca|\ud83c\udfe0|\ud83c\udfe1|\ud83c\udfe2|\ud83c\udfe3|\ud83c\udfe5|\ud83c\udfe6|\ud83c\udfe7|\ud83c\udfe8|\ud83c\udfe9|\ud83c\udfea|\ud83c\udfeb|\ud83c\udfec|\ud83c\udfed|\ud83c\udfee|\ud83c\udfef|\ud83c\udff0|\ud83d\udc0c|\ud83d\udc0d|\ud83d\udc0e|\ud83d\udc11|\ud83d\udc12|\ud83d\udc14|\ud83d\udc17|\ud83d\udc18|\ud83d\udc19|\ud83d\udc1a|\ud83d\udc1b|\ud83d\udc1c|\ud83d\udc1d|\ud83d\udc1e|\ud83d\udc1f|\ud83d\udc20|\ud83d\udc21|\ud83d\udc22|\ud83d\udc23|\ud83d\udc24|\ud83d\udc25|\ud83d\udc26|\ud83d\udc27|\ud83d\udc28|\ud83d\udc29|\ud83d\udc2b|\ud83d\udc2c|\ud83d\udc2d|\ud83d\udc2e|\ud83d\udc2f|\ud83d\udc30|\ud83d\udc31|\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|\u2754|\u2753|\u274e|\u274c|\u2728|\u270b|\u270a|\u2705|\u26ce|\u23f3|\u23f0|\u23ec|\u23eb|\u23ea|\u23e9|\u2122|\u27bf|\u00a9|\u00ae)|(?:(?:\ud83c\udc04|\ud83c\udd7f|\ud83c\ude1a|\ud83c\ude2f|\u3299|\u303d|\u2b55|\u2b50|\u2b1c|\u2b1b|\u2b07|\u2b06|\u2b05|\u2935|\u2934|\u27a1|\u2764|\u2757|\u2747|\u2744|\u2734|\u2733|\u2716|\u2714|\u2712|\u270f|\u270c|\u2709|\u2708|\u2702|\u26fd|\u26fa|\u26f5|\u26f3|\u26f2|\u26ea|\u26d4|\u26c5|\u26c4|\u26be|\u26bd|\u26ab|\u26aa|\u26a1|\u26a0|\u2693|\u267f|\u267b|\u3297|\u2666|\u2665|\u2663|\u2660|\u2653|\u2652|\u2651|\u2650|\u264f|\u264e|\u264d|\u264c|\u264b|\u264a|\u2649|\u2648|\u263a|\u261d|\u2615|\u2614|\u2611|\u260e|\u2601|\u2600|\u25fe|\u25fd|\u25fc|\u25fb|\u25c0|\u25b6|\u25ab|\u25aa|\u24c2|\u231b|\u231a|\u21aa|\u21a9|\u2199|\u2198|\u2197|\u2196|\u2195|\u2194|\u2139|\u2049|\u203c|\u2668)([\uFE0E\uFE0F]?)))/g, |
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228 |
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229 // nodes with type 1 which should **not** be parsed |
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230 shouldntBeParsed = /IFRAME|NOFRAMES|NOSCRIPT|SCRIPT|SELECT|STYLE|TEXTAREA/, |
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231 |
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232 // just a private shortcut |
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233 fromCharCode = String.fromCharCode; |
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234 |
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235 return twemoji; |
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236 |
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237 |
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238 ///////////////////////// |
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239 // private functions // |
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240 // declaration // |
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241 ///////////////////////// |
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242 |
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243 /** |
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244 * Shortcut to create text nodes |
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245 * @param string text used to create DOM text node |
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246 * @return Node a DOM node with that text |
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247 */ |
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248 function createText(text) { |
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249 return document.createTextNode(text); |
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250 } |
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251 |
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252 /** |
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253 * Default callback used to generate emoji src |
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254 * based on Twitter CDN |
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255 * @param string the emoji codepoint string |
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256 * @param string the default size to use, i.e. "36x36" |
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257 * @param string optional "\uFE0F" variant char, ignored by default |
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258 * @return string the image source to use |
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259 */ |
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260 function defaultImageSrcGenerator(icon, options) { |
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261 return ''.concat(options.base, options.size, '/', icon, options.ext); |
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262 } |
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263 |
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264 /** |
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265 * Given a generic DOM nodeType 1, walk through all children |
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266 * and store every nodeType 3 (#text) found in the tree. |
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267 * @param Element a DOM Element with probably some text in it |
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268 * @param Array the list of previously discovered text nodes |
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269 * @return Array same list with new discovered nodes, if any |
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270 */ |
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271 function grabAllTextNodes(node, allText) { |
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272 var |
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273 childNodes = node.childNodes, |
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274 length = childNodes.length, |
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275 subnode, |
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276 nodeType; |
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277 while (length--) { |
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278 subnode = childNodes[length]; |
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279 nodeType = subnode.nodeType; |
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280 // parse emoji only in text nodes |
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281 if (nodeType === 3) { |
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282 // collect them to process emoji later |
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283 allText.push(subnode); |
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284 } |
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285 // ignore all nodes that are not type 1 or that |
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286 // should not be parsed as script, style, and others |
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287 else if (nodeType === 1 && !shouldntBeParsed.test(subnode.nodeName)) { |
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288 grabAllTextNodes(subnode, allText); |
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289 } |
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290 } |
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291 return allText; |
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292 } |
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293 |
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294 /** |
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295 * Used to both remove the possible variant |
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296 * and to convert utf16 into code points |
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297 * @param string the emoji surrogate pair |
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298 * @param string the optional variant char, if any |
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299 */ |
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300 function grabTheRightIcon(icon, variant) { |
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301 // if variant is present as \uFE0F |
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302 return toCodePoint( |
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303 variant === '\uFE0F' ? |
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304 // the icon should not contain it |
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305 icon.slice(0, -1) : |
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306 // fix non standard OSX behavior |
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307 (icon.length === 3 && icon.charAt(1) === '\uFE0F' ? |
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308 icon.charAt(0) + icon.charAt(2) : icon) |
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309 ); |
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310 } |
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311 |
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312 /** |
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313 * DOM version of the same logic / parser: |
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314 * emojify all found sub-text nodes placing images node instead. |
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315 * @param Element generic DOM node with some text in some child node |
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316 * @param Object options containing info about how to parse |
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317 * |
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318 * .callback Function the callback to invoke per each found emoji. |
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319 * .base string the base url, by default twemoji.base |
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320 * .ext string the image extension, by default twemoji.ext |
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321 * .size string the assets size, by default twemoji.size |
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322 * |
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323 * @return Element same generic node with emoji in place, if any. |
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324 */ |
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325 function parseNode(node, options) { |
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326 var |
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327 allText = grabAllTextNodes(node, []), |
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328 length = allText.length, |
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329 modified, |
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330 fragment, |
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331 subnode, |
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332 text, |
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333 match, |
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334 i, |
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335 index, |
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336 img, |
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337 alt, |
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338 icon, |
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339 variant, |
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340 src, |
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341 attr; |
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342 while (length--) { |
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343 modified = false; |
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344 fragment = document.createDocumentFragment(); |
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345 subnode = allText[length]; |
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346 text = subnode.nodeValue; |
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347 i = 0; |
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348 while ((match = re.exec(text))) { |
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349 index = match.index; |
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350 if (index !== i) { |
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351 fragment.appendChild( |
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352 createText(text.slice(i, index)) |
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353 ); |
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354 } |
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355 alt = match[0]; |
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356 icon = match[1]; |
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357 variant = match[2]; |
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358 i = index + alt.length; |
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359 if (variant !== '\uFE0E') { |
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360 src = options.callback( |
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361 grabTheRightIcon(icon, variant), |
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362 options, |
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363 variant |
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364 ); |
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365 if (src) { |
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366 img = new Image(); |
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367 |
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368 // Set additional image attributes. |
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369 if ( options.imgAttr ) { |
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370 for ( attr in options.imgAttr ) { |
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371 img.setAttribute( attr, options.imgAttr[attr] ); |
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372 } |
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373 } |
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374 |
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375 img.onerror = twemoji.onerror; |
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376 img.className = options.className; |
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377 img.setAttribute('draggable', 'false'); |
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378 img.alt = alt; |
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379 img.src = src; |
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380 modified = true; |
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381 fragment.appendChild(img); |
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382 } |
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383 } |
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384 if (!img) fragment.appendChild(createText(alt)); |
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385 img = null; |
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386 } |
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387 // is there actually anything to replace in here ? |
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388 if (modified) { |
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389 // any text left to be added ? |
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390 if (i < text.length) { |
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391 fragment.appendChild( |
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392 createText(text.slice(i)) |
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393 ); |
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394 } |
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395 // replace the text node only, leave intact |
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396 // anything else surrounding such text |
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397 subnode.parentNode.replaceChild(fragment, subnode); |
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398 } |
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399 } |
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400 return node; |
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401 } |
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402 |
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403 /** |
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404 * String/HTML version of the same logic / parser: |
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405 * emojify a generic text placing images tags instead of surrogates pair. |
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406 * @param string generic string with possibly some emoji in it |
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407 * @param Object options containing info about how to parse |
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408 * |
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409 * .callback Function the callback to invoke per each found emoji. |
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410 * .base string the base url, by default twemoji.base |
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411 * .ext string the image extension, by default twemoji.ext |
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412 * .size string the assets size, by default twemoji.size |
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413 * |
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414 * @return the string with <img tags> replacing all found and parsed emoji |
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415 */ |
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416 function parseString(str, options) { |
|
417 return replace(str, function (match, icon, variant) { |
|
418 var src, attr, attributes = ''; |
|
419 // verify the variant is not the FE0E one |
|
420 // this variant means "emoji as text" and should not |
|
421 // require any action/replacement |
|
422 // http://unicode.org/Public/UNIDATA/StandardizedVariants.html |
|
423 if (variant !== '\uFE0E') { |
|
424 src = options.callback( |
|
425 grabTheRightIcon(icon, variant), |
|
426 options, |
|
427 variant |
|
428 ); |
|
429 if (src) { |
|
430 // Set additional image attributes. |
|
431 if ( options.imgAttr ) { |
|
432 for ( attr in options.imgAttr ) { |
|
433 if ( ! /draggable|class|alt|src/i.test( attr ) ) { |
|
434 attributes += ' '.concat( attr, '="', options.imgAttr[attr], '"' ); |
|
435 } |
|
436 } |
|
437 } |
|
438 |
|
439 // recycle the match string replacing the emoji |
|
440 // with its image counter part |
|
441 match = '<img '.concat( |
|
442 'class="', options.className, '" ', |
|
443 'draggable="false" ', |
|
444 // needs to preserve user original intent |
|
445 // when variants should be copied and pasted too |
|
446 'alt="', |
|
447 match, |
|
448 '" ', |
|
449 'src="', |
|
450 src, |
|
451 '"', |
|
452 attributes, |
|
453 '>' |
|
454 ); |
|
455 } |
|
456 } |
|
457 return match; |
|
458 }); |
|
459 } |
|
460 |
|
461 /** |
|
462 * Given a generic value, creates its squared counterpart if it's a number. |
|
463 * As example, number 36 will return '36x36'. |
|
464 * @param any a generic value. |
|
465 * @return any a string representing asset size, i.e. "36x36" |
|
466 * only in case the value was a number. |
|
467 * Returns initial value otherwise. |
|
468 */ |
|
469 function toSizeSquaredAsset(value) { |
|
470 return typeof value === 'number' ? |
|
471 value + 'x' + value : |
|
472 value; |
|
473 } |
|
474 |
|
475 |
|
476 ///////////////////////// |
|
477 // exported functions // |
|
478 // declaration // |
|
479 ///////////////////////// |
|
480 |
|
481 function fromCodePoint(codepoint) { |
|
482 var code = typeof codepoint === 'string' ? |
|
483 parseInt(codepoint, 16) : codepoint; |
|
484 if (code < 0x10000) { |
|
485 return fromCharCode(code); |
|
486 } |
|
487 code -= 0x10000; |
|
488 return fromCharCode( |
|
489 0xD800 + (code >> 10), |
|
490 0xDC00 + (code & 0x3FF) |
|
491 ); |
|
492 } |
|
493 |
|
494 function parse(what, how) { |
|
495 if (!how || typeof how === 'function') { |
|
496 how = {callback: how}; |
|
497 } |
|
498 // if first argument is string, inject html <img> tags |
|
499 // otherwise use the DOM tree and parse text nodes only |
|
500 return (typeof what === 'string' ? parseString : parseNode)(what, { |
|
501 callback: how.callback || defaultImageSrcGenerator, |
|
502 base: typeof how.base === 'string' ? how.base : twemoji.base, |
|
503 ext: how.ext || twemoji.ext, |
|
504 size: how.folder || toSizeSquaredAsset(how.size || twemoji.size), |
|
505 className:how.className || twemoji.className, |
|
506 imgAttr: how.imgAttr |
|
507 }); |
|
508 } |
|
509 |
|
510 function replace(text, callback) { |
|
511 return String(text).replace(re, callback); |
|
512 } |
|
513 |
|
514 function test(text) { |
|
515 // IE6 needs a reset before too |
|
516 re.lastIndex = 0; |
|
517 var result = re.test(text); |
|
518 re.lastIndex = 0; |
|
519 return result; |
|
520 } |
|
521 |
|
522 function toCodePoint(unicodeSurrogates, sep) { |
|
523 var |
|
524 r = [], |
|
525 c = 0, |
|
526 p = 0, |
|
527 i = 0; |
|
528 while (i < unicodeSurrogates.length) { |
|
529 c = unicodeSurrogates.charCodeAt(i++); |
|
530 if (p) { |
|
531 r.push((0x10000 + ((p - 0xD800) << 10) + (c - 0xDC00)).toString(16)); |
|
532 p = 0; |
|
533 } else if (0xD800 <= c && c <= 0xDBFF) { |
|
534 p = c; |
|
535 } else { |
|
536 r.push(c.toString(16)); |
|
537 } |
|
538 } |
|
539 return r.join(sep || '-'); |
|
540 } |
|
541 |
|
542 }()); |