2 * CodePress - Real Time Syntax Highlighting Editor written in JavaScript - http://codepress.org/
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4 * Copyright (C) 2007 Fernando M.A.d.S. <fermads@gmail.com>
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8 * Michael Hurni <michael.hurni@gmail.com>
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10 * This program is free software; you can redistribute it and/or modify it under the terms of the
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11 * GNU Lesser General Public License as published by the Free Software Foundation.
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13 * Read the full licence: http://www.opensource.org/licenses/lgpl-license.php
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19 autocomplete : true,
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21 // set initial vars and start sh
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22 initialize : function() {
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23 if(typeof(editor)=='undefined' && !arguments[0]) return;
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24 chars = '|32|46|62|'; // charcodes that trigger syntax highlighting
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25 cc = '\u2009'; // control char
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26 editor = document.getElementsByTagName('body')[0];
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27 document.designMode = 'on';
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28 document.addEventListener('keyup', this.keyHandler, true);
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29 window.addEventListener('scroll', function() { if(!CodePress.scrolling) CodePress.syntaxHighlight('scroll') }, false);
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30 completeChars = this.getCompleteChars();
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31 // CodePress.syntaxHighlight('init');
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34 // treat key bindings
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35 keyHandler : function(evt) {
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36 keyCode = evt.keyCode;
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37 charCode = evt.charCode;
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39 if((evt.ctrlKey || evt.metaKey) && evt.shiftKey && charCode!=90) { // shortcuts = ctrl||appleKey+shift+key!=z(undo)
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40 CodePress.shortcuts(charCode?charCode:keyCode);
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42 else if(completeChars.indexOf('|'+String.fromCharCode(charCode)+'|')!=-1 && CodePress.autocomplete) { // auto complete
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43 CodePress.complete(String.fromCharCode(charCode));
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45 else if(chars.indexOf('|'+charCode+'|')!=-1||keyCode==13) { // syntax highlighting
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46 CodePress.syntaxHighlight('generic');
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48 else if(keyCode==9 || evt.tabKey) { // snippets activation (tab)
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49 CodePress.snippets(evt);
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51 else if(keyCode==46||keyCode==8) { // save to history when delete or backspace pressed
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52 CodePress.actions.history[CodePress.actions.next()] = editor.innerHTML;
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54 else if((charCode==122||charCode==121||charCode==90) && evt.ctrlKey) { // undo and redo
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55 (charCode==121||evt.shiftKey) ? CodePress.actions.redo() : CodePress.actions.undo();
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56 evt.preventDefault();
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58 else if(keyCode==86 && evt.ctrlKey) { // paste
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59 // TODO: pasted text should be parsed and highlighted
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63 // put cursor back to its original position after every parsing
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64 findString : function() {
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65 var sel = window.getSelection();
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66 var range = window.document.createRange();
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67 var span = window.document.getElementsByTagName('span')[0];
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69 range.selectNode(span);
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70 sel.removeAllRanges();
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71 sel.addRange(range);
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72 span.parentNode.removeChild(span);
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74 //window.getSelection().getRangeAt(0).deleteContents();
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77 // split big files, highlighting parts of it
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78 split : function(code,flag) {
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79 if(flag=='scroll') {
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80 this.scrolling = true;
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84 this.scrolling = false;
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85 mid = code.indexOf('<SPAN>');
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86 if(mid-2000<0) {ini=0;end=4000;}
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87 else if(mid+2000>code.length) {ini=code.length-4000;end=code.length;}
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88 else {ini=mid-2000;end=mid+2000;}
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89 code = code.substring(ini,end);
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94 // syntax highlighting parser
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95 syntaxHighlight : function(flag) {
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96 //if(document.designMode=='off') document.designMode='on'
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98 var span = document.createElement('span');
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99 window.getSelection().getRangeAt(0).insertNode(span);
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102 o = editor.innerHTML;
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103 // o = o.replace(/<br>/g,'\r\n');
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104 // o = o.replace(/<(b|i|s|u|a|em|tt|ins|big|cite|strong)?>/g,'');
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106 o = o.replace(/<(?!span|\/span|br).*?>/gi,'');
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109 x = z = this.split(o,flag);
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111 // x = x.replace(/\r\n/g,'<br>');
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112 x = x.replace(/\t/g, ' ');
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115 if(arguments[1]&&arguments[2]) x = x.replace(arguments[1],arguments[2]);
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117 for(i=0;i<Language.syntax.length;i++)
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118 x = x.replace(Language.syntax[i].input,Language.syntax[i].output);
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120 editor.innerHTML = this.actions.history[this.actions.next()] = (flag=='scroll') ? x : o.split(z).join(x);
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122 if(flag!='init') this.findString();
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125 getLastWord : function() {
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126 var rangeAndCaret = CodePress.getRangeAndCaret();
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127 words = rangeAndCaret[0].substring(rangeAndCaret[1]-40,rangeAndCaret[1]);
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128 words = words.replace(/[\s\n\r\);\W]/g,'\n').split('\n');
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129 return words[words.length-1].replace(/[\W]/gi,'').toLowerCase();
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132 snippets : function(evt) {
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133 var snippets = Language.snippets;
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134 var trigger = this.getLastWord();
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135 for (var i=0; i<snippets.length; i++) {
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136 if(snippets[i].input == trigger) {
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137 var content = snippets[i].output.replace(/</g,'<');
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138 content = content.replace(/>/g,'>');
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139 if(content.indexOf('$0')<0) content += cc;
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140 else content = content.replace(/\$0/,cc);
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141 content = content.replace(/\n/g,'<br>');
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142 var pattern = new RegExp(trigger+cc,'gi');
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143 evt.preventDefault(); // prevent the tab key from being added
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144 this.syntaxHighlight('snippets',pattern,content);
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149 readOnly : function() {
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150 document.designMode = (arguments[0]) ? 'off' : 'on';
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153 complete : function(trigger) {
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154 window.getSelection().getRangeAt(0).deleteContents();
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155 var complete = Language.complete;
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156 for (var i=0; i<complete.length; i++) {
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157 if(complete[i].input == trigger) {
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158 var pattern = new RegExp('\\'+trigger+cc);
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159 var content = complete[i].output.replace(/\$0/g,cc);
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160 parent.setTimeout(function () { CodePress.syntaxHighlight('complete',pattern,content)},0); // wait for char to appear on screen
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165 getCompleteChars : function() {
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167 for(var i=0;i<Language.complete.length;i++)
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168 cChars += '|'+Language.complete[i].input;
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172 shortcuts : function() {
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173 var cCode = arguments[0];
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174 if(cCode==13) cCode = '[enter]';
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175 else if(cCode==32) cCode = '[space]';
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176 else cCode = '['+String.fromCharCode(charCode).toLowerCase()+']';
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177 for(var i=0;i<Language.shortcuts.length;i++)
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178 if(Language.shortcuts[i].input == cCode)
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179 this.insertCode(Language.shortcuts[i].output,false);
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182 getRangeAndCaret : function() {
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183 var range = window.getSelection().getRangeAt(0);
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184 var range2 = range.cloneRange();
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185 var node = range.endContainer;
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186 var caret = range.endOffset;
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187 range2.selectNode(node);
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188 return [range2.toString(),caret];
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191 insertCode : function(code,replaceCursorBefore) {
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192 var range = window.getSelection().getRangeAt(0);
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193 var node = window.document.createTextNode(code);
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194 var selct = window.getSelection();
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195 var range2 = range.cloneRange();
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196 // Insert text at cursor position
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197 selct.removeAllRanges();
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198 range.deleteContents();
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199 range.insertNode(node);
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200 // Move the cursor to the end of text
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201 range2.selectNode(node);
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202 range2.collapse(replaceCursorBefore);
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203 selct.removeAllRanges();
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204 selct.addRange(range2);
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207 // get code from editor
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208 getCode : function() {
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209 var code = editor.innerHTML;
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210 code = code.replace(/<br>/g,'\n');
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211 code = code.replace(/\u2009/g,'');
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212 code = code.replace(/<.*?>/g,'');
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213 code = code.replace(/</g,'<');
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214 code = code.replace(/>/g,'>');
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215 code = code.replace(/&/gi,'&');
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219 // put code inside editor
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220 setCode : function() {
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221 var code = arguments[0];
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222 code = code.replace(/\u2009/gi,'');
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223 code = code.replace(/&/gi,'&');
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224 code = code.replace(/</g,'<');
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225 code = code.replace(/>/g,'>');
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226 editor.innerHTML = code;
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229 // undo and redo methods
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231 pos : -1, // actual history position
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232 history : [], // history vector
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234 undo : function() {
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235 if(editor.innerHTML.indexOf(cc)==-1){
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236 window.getSelection().getRangeAt(0).insertNode(document.createTextNode(cc));
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237 this.history[this.pos] = editor.innerHTML;
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240 if(typeof(this.history[this.pos])=='undefined') this.pos++;
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241 editor.innerHTML = this.history[this.pos];
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242 CodePress.findString();
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245 redo : function() {
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247 if(typeof(this.history[this.pos])=='undefined') this.pos--;
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248 editor.innerHTML = this.history[this.pos];
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249 CodePress.findString();
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252 next : function() { // get next vector position and clean old ones
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253 if(this.pos>20) this.history[this.pos-21] = undefined;
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260 window.addEventListener('load', function() { CodePress.initialize('new'); }, true);
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