1 | (function () {
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2 |
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3 | if (typeof Prism === 'undefined' || typeof document === 'undefined') {
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4 | return;
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5 | }
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6 |
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7 |
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8 | if (!Element.prototype.matches) {
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9 | Element.prototype.matches = Element.prototype.msMatchesSelector || Element.prototype.webkitMatchesSelector;
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10 | }
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11 |
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12 | var LOADING_MESSAGE = 'Loading…';
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13 | var FAILURE_MESSAGE = function (status, message) {
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14 | return '✖ Error ' + status + ' while fetching file: ' + message;
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15 | };
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16 | var FAILURE_EMPTY_MESSAGE = '✖ Error: File does not exist or is empty';
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17 |
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18 | var EXTENSIONS = {
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19 | 'js': 'javascript',
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20 | 'py': 'python',
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21 | 'rb': 'ruby',
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22 | 'ps1': 'powershell',
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23 | 'psm1': 'powershell',
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24 | 'sh': 'bash',
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25 | 'bat': 'batch',
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26 | 'h': 'c',
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27 | 'tex': 'latex'
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28 | };
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29 |
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30 | var STATUS_ATTR = 'data-src-status';
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31 | var STATUS_LOADING = 'loading';
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32 | var STATUS_LOADED = 'loaded';
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33 | var STATUS_FAILED = 'failed';
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34 |
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35 | var SELECTOR = 'pre[data-src]:not([' + STATUS_ATTR + '="' + STATUS_LOADED + '"])'
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36 | + ':not([' + STATUS_ATTR + '="' + STATUS_LOADING + '"])';
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37 |
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38 | |
39 |
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40 |
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41 |
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42 |
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43 |
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44 |
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45 | function loadFile(src, success, error) {
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46 | var xhr = new XMLHttpRequest();
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47 | xhr.open('GET', src, true);
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48 | xhr.onreadystatechange = function () {
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49 | if (xhr.readyState == 4) {
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50 | if (xhr.status < 400 && xhr.responseText) {
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51 | success(xhr.responseText);
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52 | } else {
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53 | if (xhr.status >= 400) {
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54 | error(FAILURE_MESSAGE(xhr.status, xhr.statusText));
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55 | } else {
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56 | error(FAILURE_EMPTY_MESSAGE);
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57 | }
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58 | }
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59 | }
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60 | };
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61 | xhr.send(null);
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62 | }
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63 |
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64 | |
65 |
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66 |
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67 |
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68 |
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69 |
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70 |
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71 |
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72 | function parseRange(range) {
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73 | var m = /^\s*(\d+)\s*(?:(,)\s*(?:(\d+)\s*)?)?$/.exec(range || '');
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74 | if (m) {
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75 | var start = Number(m[1]);
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76 | var comma = m[2];
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77 | var end = m[3];
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78 |
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79 | if (!comma) {
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80 | return [start, start];
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81 | }
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82 | if (!end) {
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83 | return [start, undefined];
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84 | }
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85 | return [start, Number(end)];
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86 | }
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87 | return undefined;
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88 | }
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89 |
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90 | Prism.hooks.add('before-highlightall', function (env) {
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91 | env.selector += ', ' + SELECTOR;
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92 | });
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93 |
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94 | Prism.hooks.add('before-sanity-check', function (env) {
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95 | var pre = (env.element);
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96 | if (pre.matches(SELECTOR)) {
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97 | env.code = '';
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98 |
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99 | pre.setAttribute(STATUS_ATTR, STATUS_LOADING);
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100 |
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101 |
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102 | var code = pre.appendChild(document.createElement('CODE'));
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103 | code.textContent = LOADING_MESSAGE;
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104 |
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105 | var src = pre.getAttribute('data-src');
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106 |
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107 | var language = env.language;
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108 | if (language === 'none') {
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109 |
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110 |
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111 | var extension = (/\.(\w+)$/.exec(src) || [, 'none'])[1];
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112 | language = EXTENSIONS[extension] || extension;
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113 | }
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114 |
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115 |
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116 | Prism.util.setLanguage(code, language);
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117 | Prism.util.setLanguage(pre, language);
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118 |
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119 |
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120 | var autoloader = Prism.plugins.autoloader;
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121 | if (autoloader) {
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122 | autoloader.loadLanguages(language);
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123 | }
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124 |
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125 |
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126 | loadFile(
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127 | src,
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128 | function (text) {
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129 |
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130 | pre.setAttribute(STATUS_ATTR, STATUS_LOADED);
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131 |
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132 |
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133 | var range = parseRange(pre.getAttribute('data-range'));
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134 | if (range) {
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135 | var lines = text.split(/\r\n?|\n/g);
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136 |
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137 |
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138 | var start = range[0];
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139 | var end = range[1] == null ? lines.length : range[1];
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140 |
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141 | if (start < 0) { start += lines.length; }
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142 | start = Math.max(0, Math.min(start - 1, lines.length));
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143 | if (end < 0) { end += lines.length; }
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144 | end = Math.max(0, Math.min(end, lines.length));
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145 |
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146 | text = lines.slice(start, end).join('\n');
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147 |
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148 |
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149 | if (!pre.hasAttribute('data-start')) {
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150 | pre.setAttribute('data-start', String(start + 1));
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151 | }
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152 | }
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153 |
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154 |
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155 | code.textContent = text;
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156 | Prism.highlightElement(code);
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157 | },
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158 | function (error) {
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159 |
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160 | pre.setAttribute(STATUS_ATTR, STATUS_FAILED);
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161 |
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162 | code.textContent = error;
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163 | }
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164 | );
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165 | }
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166 | });
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167 |
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168 | Prism.plugins.fileHighlight = {
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169 | |
170 |
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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 | highlight: function highlight(container) {
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177 | var elements = (container || document).querySelectorAll(SELECTOR);
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178 |
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179 | for (var i = 0, element; (element = elements[i++]);) {
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180 | Prism.highlightElement(element);
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181 | }
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182 | }
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183 | };
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184 |
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185 | var logged = false;
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186 |
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187 | Prism.fileHighlight = function () {
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188 | if (!logged) {
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189 | console.warn('Prism.fileHighlight is deprecated. Use `Prism.plugins.fileHighlight.highlight` instead.');
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190 | logged = true;
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191 | }
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192 | Prism.plugins.fileHighlight.highlight.apply(this, arguments);
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193 | };
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194 |
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195 | }());
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