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LibraryThing links to WorldCat on combination/separation pages

Adds direct links to WorldCat searches for the editions shown in the combine/separate pages

  1. // ==UserScript==
  2. // @name        LibraryThing links to WorldCat on combination/separation pages
  3. // @namespace   https://greasyfork.org/en/users/11592-max-starkenburg
  4. // @description Adds direct links to WorldCat searches for the editions shown in the combine/separate pages
  5. // @include     http*://*librarything.tld/combine.php?*
  6. // @include     http*://*librarything.com/combine.php?*
  7. // @version     2
  8. // ==/UserScript==
  9.  
  10. var paras = document.getElementsByTagName("table")[0].getElementsByTagName("p");
  11. var wcOnclick = "onclick='event.stopPropagation()'"; // To prevent the new link from "selecting" that work for combination purposes
  12.  
  13. for ( var i=0; i<paras.length; i++ ) {
  14.  
  15.   var para = paras[i];
  16.   var link = "";
  17.   var wcSpan = document.createElement("span");
  18.   var editionText = para.innerHTML; // "[Media -] Title / [Author] / [(ISBN #)] / [Format] (separate)"
  19.   // Remove any media format, such as "Video Recording"
  20.   editionText = editionText.replace(/^<span class="formatnotice">[^<]+<\/span> \u2014 /, "");
  21.  
  22.   // If there's an ISBN, use that
  23.   var isbnRE = / \/[ ]+\(ISBN ([\dX]+)\)/;
  24.   if (isbnRE.test(editionText)) {
  25.     isbn = editionText.match(isbnRE)[1];
  26.     link = '&nbsp;(<a ' + wcOnclick + ' href="http://worldcat.org/isbn/' + isbn + '">WorldCat</a>)'
  27.  
  28.   // If there's no match for an ISBN, use title and possible author instead
  29.   } else {
  30.     // Remove the last part, including the separation link and any text format
  31.     editionText = editionText.replace(/&nbsp;\(<.*$/, "") // (separate) link
  32.                              .replace(/ \/ <a .*$/, "") // Empty media format <a>
  33.     var author = title = "";
  34.     // Let's hope that if the title contains any forward slashes, there's an author following the last (non-titular) slash
  35.     var titleAuthor = editionText.split(" / ");
  36.     if (titleAuthor.length > 1) {
  37.       author = titleAuthor[titleAuthor.length - 1];
  38.     }
  39.     authorSafe = author.replace(/[\-\[\]\/\{\}\(\)\*\+\?\.\\\^\$\|]/g, "\\$&"); // This replace from CoolAJ86 at http://stackoverflow.com/questions/3446170
  40.     var authorRE = new RegExp(" / " + authorSafe + "$");
  41.     title = editionText.replace(authorRE, "");
  42.     query = "ti:" + title;
  43.     if (author != "") {
  44.       query = query + " au:" + author;
  45.     }
  46.     query = encodeURIComponent(query);
  47.     link = '&nbsp;(<a ' + wcOnclick + ' href="http://worldcat.org/search?q=' + query + '">WorldCat</a>)';
  48.   }
  49.   
  50.   // Add the newly constructed link to the end of the line
  51.   wcSpan.innerHTML = link;
  52.   para.appendChild(wcSpan);
  53.  
  54. }