☰

Project Euler Problem Translator

Provides translations in Romanian, Russian, Korean and German for Project Euler problems

当前为 2014-09-07 提交的版本，查看 最新版本。

  1. /*******************************************************************************
  2.  * Copyright (c) 2012 - 2014 Radu Murzea. All rights reserved.
  3.  *
  4.  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  5.  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  6.  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
  7.  * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  8.  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  9.  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
  10.  * THE SOFTWARE.
  11.  *
  12.  *******************************************************************************/
  13.  
  14.  /*******************************************************************************
  15.  * DESCRIPTION:
  16.  * 
  17.  * This script is intended for use only on ProjectEuler.net.
  18.  * It places 5 flags (British, Romanian, Russian, Korean and German) on top of every problem's page.
  19.  * By clicking on the flag, the corresponding translation of a problem is retrieved.
  20.  * The technique behind this is JSONP (JSON with padding), since AJAX wouldn't
  21.  * work (see Same Origin Policy).
  22.  * 
  23.  * The processing function (only 2 - 3 lines of code) is another file,
  24.  * which is retrieved from the server every time. That function will be executed
  25.  * when the response comes back.
  26.  *
  27.  * The romanian and british versions of the problems come from the same server as the backend part
  28.  * of the script; the other 3 are parsed from the corresponding translations websites:
  29.  * 
  30.  * - http://euler.jakumo.org/ for Russian,
  31.  * - http://euler.synap.co.kr/ for Korean and
  32.  * - http://projekteuler.de for German
  33.  * 
  34.  * If a problem is not translated, the word 'NONE' is sent back from the
  35.  * server, a response which the script ignores.
  36.  * 
  37.  * The 5 flag images are stored inside the script in Base64 format, to avoid
  38.  * additional HTTP requests.
  39.  * 
  40.  * As you can see: the script can be very easily extended to include
  41.  * translations in dozens of languages; in this context, it is highly scalable.
  42.  *
  43.  *******************************************************************************/
  44.  
  45.  /***************************************************
  46.  *
  47.  * Version 1.6 (15 June 2014)
  48.  * _______________________________
  49.  * - Since Firefox introduced the Mixed Active Content blocker in Firefox 23, this script will
  50.  * only run when viewing problems in HTTP mode and it will fail in HTTPS. So it's now
  51.  * disabled on HTTPS.
  52.  *
  53.  * Version 1.5 (15 June 2014)
  54.  * _______________________________
  55.  * - Added translations in German.
  56.  *
  57.  * Version 1.4 (24 May 2014)
  58.  * _______________________________
  59.  * - Due to significant and frequent accessibility issues, support for Spanish translations is now
  60.  * dropped.
  61.  * 
  62.  * 
  63.  * Version 1.3 (18 March 2013)
  64.  * _______________________________
  65.  * - support for Korean added. At this date, 110 problems are translated in this language.
  66.  *
  67.  *
  68.  * Version 1.2.5 (13 January 2013)
  69.  * _______________________________
  70.  * - the flags will no longer appear on the page exactly after
  71.  * you enter a (correct or incorrect) answer. This issue existed because the URL remains
  72.  * the same.
  73.  * - a few minor changes
  74.  * 
  75.  *
  76.  * Version 1.2 (28 December 2012)
  77.  * _______________________________
  78.  * - translations are now offered in Russian and Spanish as well. These translations are parsed from
  79.  * euler.jakumo.org and euleres.tk, respectively. Because of this, additional roundtrips must be made to
  80.  * retrieve these translations, which is why it will feel slower... sometimes very slow.
  81.  *
  82.  * - some small changes here and there.
  83.  *
  84.  * - the backend part has been changed from "read.php" to "getjsontranslation.php". Although the old version
  85.  * is still functional, it is highly recommended to switch to the new one (spanish and russian are accessible
  86.  * only in the new one). Please note that the old version will be taken out of rotation on the 20th of January.
  87.  *
  88.  * WARNING: I have no control over how many problems are accessible in the 2 new languages and the quality
  89.  * of these translations. Any problem regarding these 2 languages (Russian and Spanish) should be directed
  90.  * to their authors.
  91.  *
  92.  * WARNING: In my tests, the Spanish version would sometimes fail for some problems and then work again
  93.  * a few minutes later. Apparently, this issue has something to do
  94.  * with network connection timeouts (low quality hosting ?), so this is not a bug in the script
  95.  * itself. Please do not report this as a bug.
  96.  * 
  97.  *
  98.  * Version 1.0.2 (17 December 2012)
  99.  * _______________________________
  100.  * - script functionality was broken by some changes in
  101.  * the HTML code on projecteuler.net that occured on 16 December 2012. This version
  102.  * fixes this issue.
  103.  *
  104.  *
  105.  * Version 1.0.1 (22 September 2012)
  106.  * _______________________________
  107.  * - added some extra safety by checking that the parsing of
  108.  * the problem's ID did not return NaN
  109.  * 
  110.  *
  111.  * Version 1.0 (18 September 2012)
  112.  * _______________________________
  113.  * - initial release
  114.  *
  115.  ****************************************************/
  116.  
  117.  
  118. // ==UserScript==
  119. // @name Project Euler Problem Translator
  120. // @description Provides translations in Romanian, Russian, Korean and German for Project Euler problems
  121. // @author Radu Murzea
  122. // @version 1.6
  123. // @icon http://projecteuler.javafling.org/favicon.ico
  124. // @include http://projecteuler.net/problem=*
  125. // @grant none
  126. // @namespace https://greasyfork.org/users/5099
  127. // ==/UserScript==  
  128.  
  129.  
  130.  
  131. function setNewTranslation(problem, lang)
  132. {
  133.     var script = document.createElement('script');
  134.     
  135.     script.setAttribute('src', 'http://projecteuler.javafling.org/getjsontranslation.php?problem=' + problem + '&lang=' + lang);
  136.     
  137.     document.getElementsByTagName('head')[0].appendChild(script); 
  138. }
  139.  
  140. function getProblemID()
  141. {
  142.     var h3Nodes = document.getElementsByTagName('h3');
  143.     
  144.     for (var nodeIndex = 0; nodeIndex < h3Nodes.length; nodeIndex++) {
  145.         var nodePieces = h3Nodes[nodeIndex].innerHTML.split(" ");
  146.         
  147.         if (nodePieces[0] === "Problem") {
  148.             var problemID = parseInt(nodePieces[1]);
  149.             
  150.             return problemID;
  151.         }
  152.     }
  153.     
  154.     return -1;
  155. }
  156.  
  157. function getROFlag()
  158. {
  159.     var RO = document.createElement("img");
  160.     RO.src = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAALCAIAAAD5gJpuAAAABGdBTUEAAK/INwWK6QAAABl0RVh0U29mdHd" +
  161.             "hcmUAQWRvYmUgSW1hZ2VSZWFkeXHJZTwAAAGBSURBVHjaYmTQPs7w6Q8DCDAxMLC8P2DOwcbA8I/hHxix/GD4pw3kIRBAALEwvPtT3aQIV" +
  162.             "P7vH+O//0yc0hWsrD8ZGP78//8HRH75/T/mz//fv///AZFfNm0CCCAWBhYGhv8MT17//vvv/99/TP/+PWJg+P7//28o+vP7/+1f/3/9Aqp" +
  163.             "mlJUF2gAQQCwgs/8zAFX/+QtCQIP///8FJn+DGP+Aqn9DNDD8/g3UABBALAx//oFV//vzhwGs4RfCeBAbRQPQdIAAYmH49Q+o7vef/zANv" +
  164.             "5H0gBm/oE5i+PMHaANAAIE0/AUZ//8XUM9fBiQNYBLJSYxgJwEEEEjD778Mv/6A9Pz+wwB1BpoNYOOBbgAGHEAAsTD8BNL/gJqBrvr9lxF" +
  165.             "JA8QGsIY/QA1/Gf7+BfoBIICAofQHqFRShBXkjb/MTEzSDAzfGBmB/gMa95uB5Q+D0h+QUjACOgkggBgZGLYyMPwCS4Nc+HxvMAsLw78/4" +
  166.             "HgFkh8Y/oVD4xgCAAIMACetb51Fz+5FAAAAAElFTkSuQmCC";
  167.     
  168.     RO.alt = "Romania";
  169.     RO.title = "Romanian";
  170.     RO.style.cursor = "pointer";
  171.     
  172.     RO.onclick = function() {
  173.         var problemID = getProblemID();
  174.         
  175.         if (! isNaN(problemID) && problemID !== -1) {
  176.             setNewTranslation(problemID, "ro");
  177.         }
  178.     };
  179.  
  180.     return RO;
  181. }
  182.  
  183. function getDEFlag()
  184. {
  185.     var DE = document.createElement("img");
  186.     DE.src = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAALCAIAAAD5gJpuAAAABGdBTUEAAK/INwWK6QAAABl0RVh0U29mdHd" +
  187.             "hcmUAQWRvYmUgSW1hZ2VSZWFkeXHJZTwAAAGzSURBVHjaYvTxcWb4+53h3z8GZpZff/79+v3n/7/fDAz/GHAAgABi+f37e3FxOZD1Dwz+/" +
  188.             "v3z9y+E/AMFv3//+Qumfv9et241QACxMDExAVWfOHkJJAEW/gUEP0EQDn78+AHE/gFOQJUAAcQiy8Ag8O+fLFj1n1+/QDp+/gQioK7fP37" +
  189.             "8+vkDqOH39x9A/RJ/gE5lAAhAYhzcAACCQBDkgRXRjP034R0IaDTZTFZn0DItot37S94KLOINerEcI7aKHAHE8v/3r/9//zIA1f36/R+o4" +
  190.             "tevf1ANYNVA9P07RD9IJQMDQACxADHD3z8Ig4GMHz+AqqHagKp//fwLVA0U//v7LwMDQACx/LZiYFD7/5/53/+///79BqK/EMZ/UPACSYa" +
  191.             "/v/8DyX9A0oTxx2EGgABi+a/H8F/m339BoCoQ+g8kgRaCQvgPJJiBYmAuw39hxn+uDAABxMLwi+E/0PusRkwMvxhBGoDkH4b/v/+D2EDyz" +
  192.             "///QB1/QLb8+sP0lQEggFh+vGXYM2/SP6A2Zoaf30Ex/J+PgekHwz9gQDAz/P0FYrAyMfz7wcDAzPDtFwNAgAEAd3SIyRitX1gAAAAASUV" +
  193.             "ORK5CYII=";
  194.     
  195.     DE.alt = "Germany";
  196.     DE.title = "German";
  197.     DE.style.cursor = "pointer";
  198.     
  199.     DE.onclick = function() {
  200.         var problemID = getProblemID();
  201.         
  202.         if (! isNaN(problemID) && problemID !== -1) {
  203.             setNewTranslation(problemID, "de");
  204.         }
  205.     };
  206.  
  207.     return DE;
  208. }
  209.  
  210. function getKRFlag()
  211. {
  212.     var KR = document.createElement("img");
  213.     KR.src = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAALCAIAAAD5gJpuAAAABGdBTUEAAK/INwWK6QAAABl0RVh0U29mdHd" + 
  214.             "hcmUAQWRvYmUgSW1hZ2VSZWFkeXHJZTwAAAHDSURBVHjaYjSs/f/lBwME/Pn379cfIMnw6xfDrz9A9r/fIA4SYmMACCDGgzf/q4iBlf///" +
  215.             "5+B4d9/KPMfCIMY/xn+//sH4f4/duMLQAAxfmRgZO/v+/fiFcNfkJkMLEz/v3wB6fn95//fPyDy9+9/f37///WbSUry+ZzZAAHEApRifPW" +
  216.             "KiYmBOSiEUV6e8efPX6tX/9m9m+HXb4bfv0Do129GoBN//2b49YOJgQEggJj+AZ3x9y+zv/+/W7f+P7j/a8cO5qCg/2xs/379AqK/P3/9/" +
  217.             "QVCf4Dc30DdDAABBNLA8Ocvg6gIk77+z1Wrmays/vPwMIiI/P8N0gB0z3+wTiD5/8+fPwwMAAHEBHIu0K0vXv7evIklIODP9u0M37//e/7" +
  218.             "838+fIEU/f0JVg20AKgYIIKAfGBiBdi1ZwpaY+F9SgkVN7Wdt7f83bxjBZgOdDvEA0HgmIGJgAAggFqAt/3h4/j169K29AxRQwOD78pWBi" +
  219.             "+s/K+s/sDpwKAFj588/QUFghAEEEMups9+1pFlAgQ0Nc0iog6MCLAQR/weSY9hx6jVAADEyx3/9+wEWkcB4BRryC4kLj+l/QDYDAx8DQIA" +
  220.             "BAA2EWORnICKSAAAAAElFTkSuQmCC";
  221.     
  222.     KR.alt = "Korea";
  223.     KR.title = "Korean";
  224.     KR.style.cursor = "pointer";
  225.     
  226.     KR.onclick = function() {
  227.         var problemID = getProblemID();
  228.         
  229.         if (! isNaN(problemID) && problemID !== -1) {
  230.             setNewTranslation(problemID, "kr");
  231.         }
  232.     };
  233.     
  234.     return KR;
  235. }
  236.  
  237. function getRUFlag()
  238. {
  239.     var RU = document.createElement("img");
  240.     RU.src = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAALCAIAAAD5gJpuAAAABGdBTUEAAK/INwWK6QAAABl0RVh0U29mdHd" +
  241.             "hcmUAQWRvYmUgSW1hZ2VSZWFkeXHJZTwAAAE2SURBVHjaYvz69T8DAvz79w9CQVj/0MCffwwAAcQClObiAin6/x+okxHMgPCAbOb//5n+I" +
  242.             "4EXL74ABBALxGSwagTjPzbAyMgItAQggBg9Pf9nZPx//x7kjL9////9C2QAyf9//qCQQCQkxFhY+BEggFi2b/+nq8v46BEDSPQ3w+8//3/" +
  243.             "/BqFfv9BJeXmQEwACCOSkP38YgHy4Bog0RN0vIOMXVOTPH6Cv/gEEEEgDxFKgHEgDXCmGDUAE1AAQQCybGZg1f/d8//XsH0jTn3+///z79" +
  244.             "RtE/v4NZfz68xfI/vOX+4/0ZoZFAAHE4gYMvD+3/v2+h91wCANo9Z+/jH9VxBkYAAKIBRg9TL//MEhKAuWAogxgZzGC2CCfgUggAoYdGAE" +
  245.             "VAwQQ41egu5AQAyoXTQoIAAIMAD+JZR7YOGEWAAAAAElFTkSuQmCC";
  246.     
  247.     RU.alt = "Russia";
  248.     RU.title = "Russian";
  249.     RU.style.cursor = "pointer";
  250.     
  251.     RU.onclick = function() {
  252.         var problemID = getProblemID();
  253.         
  254.         if (! isNaN(problemID) && problemID !== -1) {
  255.             setNewTranslation(problemID, "ru");
  256.         }
  257.     };
  258.     
  259.     return RU;
  260. }
  261.  
  262. function getUKFlag()
  263. {
  264.     var UK = document.createElement("img");
  265.     UK.src = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAALCAIAAAD5gJpuAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJ" +
  266.             "lYWR5ccllPAAAAflJREFUeNpinDRzn5qN3uFDt16+YWBg+Pv339+KGN0rbVP+//2rW5tf0Hfy/2+mr99+yKpyOl3Ydt8njEWIn8f9zj639" +
  267.             "NC7j78eP//8739GVUUhNUNuhl8//ysKeZrJ/v7z10Zb2PTQTIY1XZO2Xmfad+f7XgkXxuUrVB6cjPVXef78JyMjA8PFuwyX7gAZj97+T2e" +
  268.             "9o3d4BWNp84K1NzubTjAB3fH0+fv6N3qP/ir9bW6ozNQCijB8/8zw/TuQ7r4/ndvN5mZgkpPXiis3Pv34+ZPh5t23//79Rwehof/9/NDEg" +
  269.             "MrOXHvJcrllgpoRN8PFOwy/fzP8+gUlgZI/f/5xcPj/69e/37//AUX+/mXRkN555gsOG2xt/5hZQMwF4r9///75++f3nz8nr75gSms82jf" +
  270.             "vQnT6zqvXPjC8e/srJQHo9P9fvwNtAHmG4f8zZ6dDc3bIyM2LTNlsbtfM9OPHH3FhtqUz3eXX9H+cOy9ZMB2o6t/Pn0DHMPz/b+2wXGTvP" +
  271.             "lPGFxdcD+mZyjP8+8MUE6sa7a/xo6Pykn1s4zdzIZ6///8zMGpKM2pKAB0jqy4UE7/msKat6Jw5mafrsxNtWZ6/fjvNLW29qv25pQd///n" +
  272.             "+5+/fxDDVbcc//P/zx/36m5Ub9zL8+7t66yEROcHK7q5bldMBAgwADcRBCuVLfoEAAAAASUVORK5CYII=";
  273.     
  274.     UK.alt = "United Kingdom";
  275.     UK.title = "British English";
  276.     UK.style.cursor = "pointer";
  277.     
  278.     UK.onclick = function() {
  279.         var problemID = getProblemID();
  280.         
  281.         if (! isNaN(problemID) && problemID !== -1) {
  282.             setNewTranslation(problemID, "en");
  283.         }
  284.     };
  285.     
  286.     return UK;
  287. }
  288.  
  289. function insertFlags()
  290. {
  291.     var UK = getUKFlag();   //UK
  292.     var RO = getROFlag();   //Romania
  293.     var RU = getRUFlag();   //Russia
  294.     var KR = getKRFlag();   //Korea
  295.     var DE = getDEFlag();   //Germany
  296.     
  297.     var flagsParagraph = document.createElement("p");
  298.     
  299.     UK.style.marginRight = "12px";
  300.     RO.style.marginRight = "12px";
  301.     RU.style.marginRight = "12px";
  302.     KR.style.marginRight = "12px";
  303.     
  304.     flagsParagraph.appendChild(UK);
  305.     flagsParagraph.appendChild(RO);
  306.     flagsParagraph.appendChild(RU);
  307.     flagsParagraph.appendChild(KR);
  308.     flagsParagraph.appendChild(DE);
  309.     
  310.     flagsParagraph.style.display = "block";
  311.     flagsParagraph.style.marginLeft = "auto";
  312.     flagsParagraph.style.marginRight = "auto";
  313.     flagsParagraph.style.textAlign = "center";
  314.     
  315.     // reference node
  316.     var refNode = document.getElementById("content");
  317.     
  318.     // insert before
  319.     refNode.parentNode.insertBefore(flagsParagraph, refNode);
  320. }
  321.  
  322. function insertTranslationProcessing()
  323. {
  324.     var pscript = document.createElement('script');
  325.     
  326.     pscript.setAttribute('type', 'text/javascript');
  327.     
  328.     pscript.setAttribute('src', 'http://projecteuler.javafling.org/processtranslation.js');
  329.     
  330.     var bodyElement = document.getElementsByTagName('body')[0];
  331.     
  332.     bodyElement.insertBefore(pscript, bodyElement.firstChild);
  333. }
  334.  
  335. var problemID = getProblemID();
  336.  
  337. if (! isNaN(problemID) && problemID !== -1) {
  338.     insertFlags();
  339.     
  340.     insertTranslationProcessing();
  341. }