1 | (function () {
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2 | if (typeof self === 'undefined' || !self.Prism || !self.document) {
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3 | return;
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4 | }
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5 |
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6 |
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7 | if (!Element.prototype.matches) {
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8 | Element.prototype.matches = Element.prototype.msMatchesSelector || Element.prototype.webkitMatchesSelector;
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9 | }
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10 |
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11 | var Prism = window.Prism;
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12 |
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13 | var LOADING_MESSAGE = 'Loading…';
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14 | var FAILURE_MESSAGE = function (status, message) {
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15 | return '✖ Error ' + status + ' while fetching file: ' + message;
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16 | };
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17 | var FAILURE_EMPTY_MESSAGE = '✖ Error: File does not exist or is empty';
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18 |
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19 | var EXTENSIONS = {
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20 | 'js': 'javascript',
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21 | 'py': 'python',
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22 | 'rb': 'ruby',
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23 | 'ps1': 'powershell',
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24 | 'psm1': 'powershell',
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25 | 'sh': 'bash',
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26 | 'bat': 'batch',
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27 | 'h': 'c',
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28 | 'tex': 'latex'
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29 | };
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30 |
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31 | var STATUS_ATTR = 'data-src-status';
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32 | var STATUS_LOADING = 'loading';
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33 | var STATUS_LOADED = 'loaded';
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34 | var STATUS_FAILED = 'failed';
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35 |
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36 | var SELECTOR = 'pre[data-src]:not([' + STATUS_ATTR + '="' + STATUS_LOADED + '"])'
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37 | + ':not([' + STATUS_ATTR + '="' + STATUS_LOADING + '"])';
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38 |
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39 | var lang = /\blang(?:uage)?-([\w-]+)\b/i;
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40 |
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41 | |
42 |
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43 |
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44 |
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45 |
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46 |
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47 |
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48 | function setLanguageClass(element, language) {
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49 | var className = element.className;
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50 | className = className.replace(lang, ' ') + ' language-' + language;
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51 | element.className = className.replace(/\s+/g, ' ').trim();
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52 | }
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53 |
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54 |
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55 | Prism.hooks.add('before-highlightall', function (env) {
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56 | env.selector += ', ' + SELECTOR;
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57 | });
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58 |
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59 | Prism.hooks.add('before-sanity-check', function (env) {
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60 | var pre = (env.element);
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61 | if (pre.matches(SELECTOR)) {
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62 | env.code = '';
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63 |
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64 | pre.setAttribute(STATUS_ATTR, STATUS_LOADING);
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65 |
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66 |
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67 | var code = pre.appendChild(document.createElement('CODE'));
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68 | code.textContent = LOADING_MESSAGE;
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69 |
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70 | var src = pre.getAttribute('data-src');
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71 |
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72 | var language = env.language;
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73 | if (language === 'none') {
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74 |
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75 |
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76 | var extension = (/\.(\w+)$/.exec(src) || [, 'none'])[1];
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77 | language = EXTENSIONS[extension] || extension;
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78 | }
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79 |
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80 |
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81 | setLanguageClass(code, language);
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82 | setLanguageClass(pre, language);
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83 |
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84 |
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85 | var autoloader = Prism.plugins.autoloader;
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86 | if (autoloader) {
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87 | autoloader.loadLanguages(language);
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88 | }
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89 |
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90 |
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91 | var xhr = new XMLHttpRequest();
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92 | xhr.open('GET', src, true);
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93 | xhr.onreadystatechange = function () {
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94 | if (xhr.readyState == 4) {
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95 | if (xhr.status < 400 && xhr.responseText) {
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96 |
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97 | pre.setAttribute(STATUS_ATTR, STATUS_LOADED);
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98 |
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99 |
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100 | code.textContent = xhr.responseText;
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101 | Prism.highlightElement(code);
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102 |
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103 | } else {
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104 |
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105 | pre.setAttribute(STATUS_ATTR, STATUS_FAILED);
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106 |
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107 | if (xhr.status >= 400) {
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108 | code.textContent = FAILURE_MESSAGE(xhr.status, xhr.statusText);
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109 | } else {
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110 | code.textContent = FAILURE_EMPTY_MESSAGE;
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111 | }
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112 | }
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113 | }
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114 | };
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115 | xhr.send(null);
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116 | }
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117 | });
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118 |
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119 | Prism.plugins.fileHighlight = {
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120 | |
121 |
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122 |
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123 |
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124 |
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125 |
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126 |
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127 | highlight: function highlight(container) {
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128 | var elements = (container || document).querySelectorAll(SELECTOR);
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129 |
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130 | for (var i = 0, element; element = elements[i++];) {
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131 | Prism.highlightElement(element);
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132 | }
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133 | }
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134 | };
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135 |
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136 | var logged = false;
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137 |
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138 | Prism.fileHighlight = function () {
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139 | if (!logged) {
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140 | console.warn('Prism.fileHighlight is deprecated. Use `Prism.plugins.fileHighlight.highlight` instead.');
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141 | logged = true;
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142 | }
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143 | Prism.plugins.fileHighlight.highlight.apply(this, arguments);
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144 | }
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145 |
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146 | })();
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