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Replace Text On Webpages

Replaces text on websites. Now supports wildcards in search queries. Won't replace text in certain tags like links and code blocks

  1. // ==UserScript==
  2. // @name           Replace Text On Webpages
  3. // @namespace      http://userscripts.org/users/23652
  4. // @description    Replaces text on websites. Now supports wildcards in search queries. Won't replace text in certain tags like links and code blocks
  5. // @include        http://*
  6. // @include        https://*
  7. // @include        file://*
  8. // @exclude        http://userscripts.org/scripts/review/*
  9. // @exclude        http://userscripts.org/scripts/edit/*
  10. // @exclude        http://userscripts.org/scripts/edit_src/*
  11. // @exclude        https://userscripts.org/scripts/review/*
  12. // @exclude        https://userscripts.org/scripts/edit/*
  13. // @exclude        https://userscripts.org/scripts/edit_src/*
  14. // @copyright      JoeSimmons
  15. // @version        1.1.0
  16. // @license        http://creativecommons.org/licenses/by-nc-nd/3.0/us/
  17. // ==/UserScript==
  18. (function () {
  19.     'use strict';
  20.  
  21.  
  22.     /*
  23.         NOTE: 
  24.             You can use \\* to match actual asterisks instead of using it as a wildcard!
  25.             The examples below show a wildcard in use and a regular asterisk replacement.
  26.     */
  27.  
  28.     var words = {
  29.     ///////////////////////////////////////////////////////
  30.  
  31.  
  32.         // Syntax: 'Search word' : 'Replace word',
  33.         'your a' : 'you\'re a',
  34.         'imo' : 'in my opinion',
  35.         'im\\*o' : 'matching an asterisk, not a wildcard',
  36.         '/\\bD\\b/g' : '[D]',
  37.  
  38.  
  39.     ///////////////////////////////////////////////////////
  40.     '':''};
  41.  
  42.  
  43.  
  44.  
  45.  
  46.  
  47.  
  48.  
  49.  
  50.  
  51.  
  52.     //////////////////////////////////////////////////////////////////////////////
  53.     // This is where the real code is
  54.     // Don't edit below this
  55.     //////////////////////////////////////////////////////////////////////////////
  56.  
  57.     var regexs = [], replacements = [],
  58.         tagsWhitelist = ['PRE', 'BLOCKQUOTE', 'CODE', 'INPUT', 'BUTTON', 'TEXTAREA'],
  59.         rIsRegexp = /^\/(.+)\/([gim]+)?$/,
  60.         word, text, texts, i, userRegexp;
  61.  
  62.     // prepareRegex by JoeSimmons
  63.     // used to take a string and ready it for use in new RegExp()
  64.     function prepareRegex(string) {
  65.         return string.replace(/([\[\]\^\&\$\.\(\)\?\/\\\+\{\}\|])/g, '\\$1');
  66.     }
  67.  
  68.     // function to decide whether a parent tag will have its text replaced or not
  69.     function isTagOk(tag) {
  70.         return tagsWhitelist.indexOf(tag) === -1;
  71.     }
  72.  
  73.     delete words['']; // so the user can add each entry ending with a comma,
  74.                       // I put an extra empty key/value pair in the object.
  75.                       // so we need to remove it before continuing
  76.  
  77.     // convert the 'words' JSON object to an Array
  78.     for (word in words) {
  79.         if ( typeof word === 'string' && words.hasOwnProperty(word) ) {
  80.             userRegexp = word.match(rIsRegexp);
  81.  
  82.             // add the search/needle/query
  83.             if (userRegexp) {
  84.                 regexs.push(
  85.                     new RegExp(userRegexp[1], 'g')
  86.                 );
  87.             } else {
  88.                 regexs.push(
  89.                     new RegExp(prepareRegex(word).replace(/\\?\*/g, function (fullMatch) {
  90.                         return fullMatch === '\\*' ? '*' : '[^ ]*';
  91.                     }), 'g')
  92.                 );
  93.             }
  94.  
  95.             // add the replacement
  96.             replacements.push( words[word] );
  97.         }
  98.     }
  99.  
  100.     // do the replacement
  101.     texts = document.evaluate('//body//text()[ normalize-space(.) != "" ]', document, null, 6, null);
  102.     for (i = 0; text = texts.snapshotItem(i); i += 1) {
  103.         if ( isTagOk(text.parentNode.tagName) ) {
  104.             regexs.forEach(function (value, index) {
  105.                 text.data = text.data.replace( value, replacements[index] );
  106.             });
  107.         }
  108.     }
  109.  
  110. }());

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