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/*******************************************************************************
* Copyright (c) 2012 - 2016 Radu Murzea. All rights reserved.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*
*******************************************************************************/
/*******************************************************************************
* DESCRIPTION:
*
* This script is intended for use only on ProjectEuler.net and it was build to be used together
* with Firefox's GreaseMonkey extension.
*
* It places 5 flags (British, Romanian, Russian, Korean and German) on top of every problem's page.
* By clicking on the flag, the corresponding translation of a problem is retrieved.
*
* Obviously, not at all problems are available in the above mentioned languages. In this case, clicking on the flag will do nothing.
*
* Notes about implementation:
*
* - The technique used for implementing this is **JSONP** (JSON with padding), since AJAX wouldn't work (see Same Origin Policy).
* - The processing function (only 2 - 3 lines of code) is found in the **processtranslation.js** file. That function will be executed when the response comes back.
* - The 5 flag images are stored inside the script in Base64 format, to avoid additional HTTP requests.
*
* LIMITATIONS:
*
* - does not work on HTTPS version of ProjectEuler (Firefox 23+), unless you disable Mixed Active Content blocker
* - for some unknown reason, it needs at least Firefox 9+ to work.
*
* The translations are parsed from the corresponding translations websites:
*
* - http://projecteuler.radumurzea.net/ for Romanian
* - http://euler.jakumo.org/ for Russian,
* - http://euler.synap.co.kr/ for Korean and
* - http://projekteuler.de for German
*
* You can see a demo on how the script works in the video on this page: http://projecteuler.radumurzea.net/greasemonkey.php
*
* The script is also hosted here, for easier installation:
*
* - https://greasyfork.org/en/scripts/4899-project-euler-problem-translator
* - https://openuserjs.org/scripts/SoboLAN/Project_Euler_Problem_Translator
*
*
*******************************************************************************/
/***************************************************
*
* Version 1.7 (24 September 2016)
* - The domain name where the scripts and romanian translations live has been changed, so this new version updates them.
* _______________________________
*
* Version 1.6 (15 June 2014)
* - Since Firefox introduced the Mixed Active Content blocker in Firefox 23, this script will
* only run when viewing problems in HTTP mode and it will fail in HTTPS. So it's now
* disabled on HTTPS.
* @see https://blog.mozilla.org/tanvi/2013/04/10/mixed-content-blocking-enabled-in-firefox-23/
* A solution would be to buy a HTTPS certificate for my domain, but atm the costs are not justified.
* _______________________________
*
* Version 1.5 (15 June 2014)
* - Added translations in German.
*_______________________________
*
* Version 1.4 (24 May 2014)
* - Due to significant and frequent accessibility issues, support for Spanish translations is now
* dropped.
* _______________________________
*
* Version 1.3 (18 March 2013)
* - support for Korean added. At this date, 110 problems are translated in this language.
* _______________________________
*
* Version 1.2.5 (13 January 2013)
* - the flags will no longer appear on the page exactly after
* you enter a (correct or incorrect) answer. This issue existed because the URL remains
* the same.
* - a few minor changes
* _______________________________
*
* Version 1.2 (28 December 2012)
* - translations are now offered in Russian and Spanish as well. These translations are parsed from
* euler.jakumo.org and euleres.tk, respectively. Because of this, additional roundtrips must be made to
* retrieve these translations, which is why it will feel slower... sometimes very slow.
* - some small changes here and there.
* - the backend part has been changed from "read.php" to "getjsontranslation.php". Although the old version
* is still functional, it is highly recommended to switch to the new one (spanish and russian are accessible
* only in the new one). Please note that the old version will be taken out of rotation on the 20th of January.
*
* WARNING: I have no control over how many problems are accessible in the 2 new languages and the quality
* of these translations. Any problem regarding these 2 languages (Russian and Spanish) should be directed
* to their authors.
*
* WARNING: In my tests, the Spanish version would sometimes fail for some problems and then work again
* a few minutes later. Apparently, this issue has something to do
* with network connection timeouts (low quality hosting ?), so this is not a bug in the script
* itself. Please do not report this as a bug.
* _______________________________
*
* Version 1.0.2 (17 December 2012)
* - script functionality was broken by some changes in
* the HTML code on projecteuler.net that occured on 16 December 2012. This version
* fixes this issue.
* _______________________________
*
* Version 1.0.1 (22 September 2012)
* - added some extra safety by checking that the parsing of
* the problem's ID did not return NaN
* _______________________________
*
* Version 1.0 (18 September 2012)
* - initial release
*
****************************************************/
// ==UserScript==
// @name Project Euler Problem Translator
// @description Provides translations in Romanian, Russian, Korean and German for Project Euler problems
// @author Radu Murzea
// @version 1.7
// @icon http://projecteuler.radumurzea.net/favicon.ico
// @updateURL https://github.com/SoboLAN/projecteuler-translation-script/raw/master/projecteuler.translate.user.js
// @include http://projecteuler.net/problem=*
// @grant none
// ==/UserScript==
function setNewTranslation(problem, lang)
{
var script = document.createElement('script');
script.setAttribute('src', 'http://projecteuler.radumurzea.net/getjsontranslation.php?problem=' + problem + '&lang=' + lang);
document.getElementsByTagName('head')[0].appendChild(script);
}
function getProblemID()
{
var h3Nodes = document.getElementsByTagName('h3');
for (var nodeIndex = 0; nodeIndex < h3Nodes.length; nodeIndex++) {
var nodePieces = h3Nodes[nodeIndex].innerHTML.split(" ");
if (nodePieces[0] === "Problem") {
var problemID = parseInt(nodePieces[1]);
return problemID;
}
}
return -1;
}
function getROFlag()
{
var RO = document.createElement("img");
RO.src = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAALCAIAAAD5gJpuAAAABGdBTUEAAK/INwWK6QAAABl0RVh0U29mdHd" +
"hcmUAQWRvYmUgSW1hZ2VSZWFkeXHJZTwAAAGBSURBVHjaYmTQPs7w6Q8DCDAxMLC8P2DOwcbA8I/hHxix/GD4pw3kIRBAALEwvPtT3aQIV" +
"P7vH+O//0yc0hWsrD8ZGP78//8HRH75/T/mz//fv///AZFfNm0CCCAWBhYGhv8MT17//vvv/99/TP/+PWJg+P7//28o+vP7/+1f/3/9Aqp" +
"mlJUF2gAQQCwgs/8zAFX/+QtCQIP///8FJn+DGP+Aqn9DNDD8/g3UABBALAx//oFV//vzhwGs4RfCeBAbRQPQdIAAYmH49Q+o7vef/zANv" +
"5H0gBm/oE5i+PMHaANAAIE0/AUZ//8XUM9fBiQNYBLJSYxgJwEEEEjD778Mv/6A9Pz+wwB1BpoNYOOBbgAGHEAAsTD8BNL/gJqBrvr9lxF" +
"JA8QGsIY/QA1/Gf7+BfoBIICAofQHqFRShBXkjb/MTEzSDAzfGBmB/gMa95uB5Q+D0h+QUjACOgkggBgZGLYyMPwCS4Nc+HxvMAsLw78/4" +
"HgFkh8Y/oVD4xgCAAIMACetb51Fz+5FAAAAAElFTkSuQmCC";
RO.alt = "Romania";
RO.title = "Romanian";
RO.style.cursor = "pointer";
RO.onclick = function() {
var problemID = getProblemID();
if (! isNaN(problemID) && problemID !== -1) {
setNewTranslation(problemID, "ro");
}
};
return RO;
}
function getDEFlag()
{
var DE = document.createElement("img");
DE.src = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAALCAIAAAD5gJpuAAAABGdBTUEAAK/INwWK6QAAABl0RVh0U29mdHd" +
"hcmUAQWRvYmUgSW1hZ2VSZWFkeXHJZTwAAAGzSURBVHjaYvTxcWb4+53h3z8GZpZff/79+v3n/7/fDAz/GHAAgABi+f37e3FxOZD1Dwz+/" +
"v3z9y+E/AMFv3//+Qumfv9et241QACxMDExAVWfOHkJJAEW/gUEP0EQDn78+AHE/gFOQJUAAcQiy8Ag8O+fLFj1n1+/QDp+/gQioK7fP37" +
"8+vkDqOH39x9A/RJ/gE5lAAhAYhzcAACCQBDkgRXRjP034R0IaDTZTFZn0DItot37S94KLOINerEcI7aKHAHE8v/3r/9//zIA1f36/R+o4" +
"tevf1ANYNVA9P07RD9IJQMDQACxADHD3z8Ig4GMHz+AqqHagKp//fwLVA0U//v7LwMDQACx/LZiYFD7/5/53/+///79BqK/EMZ/UPACSYa" +
"/v/8DyX9A0oTxx2EGgABi+a/H8F/m339BoCoQ+g8kgRaCQvgPJJiBYmAuw39hxn+uDAABxMLwi+E/0PusRkwMvxhBGoDkH4b/v/+D2EDyz" +
"///QB1/QLb8+sP0lQEggFh+vGXYM2/SP6A2Zoaf30Ex/J+PgekHwz9gQDAz/P0FYrAyMfz7wcDAzPDtFwNAgAEAd3SIyRitX1gAAAAASUV" +
"ORK5CYII=";
DE.alt = "Germany";
DE.title = "German";
DE.style.cursor = "pointer";
DE.onclick = function() {
var problemID = getProblemID();
if (! isNaN(problemID) && problemID !== -1) {
setNewTranslation(problemID, "de");
}
};
return DE;
}
function getKRFlag()
{
var KR = document.createElement("img");
KR.src = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAALCAIAAAD5gJpuAAAABGdBTUEAAK/INwWK6QAAABl0RVh0U29mdHd" +
"hcmUAQWRvYmUgSW1hZ2VSZWFkeXHJZTwAAAHDSURBVHjaYjSs/f/lBwME/Pn379cfIMnw6xfDrz9A9r/fIA4SYmMACCDGgzf/q4iBlf///" +
"5+B4d9/KPMfCIMY/xn+//sH4f4/duMLQAAxfmRgZO/v+/fiFcNfkJkMLEz/v3wB6fn95//fPyDy9+9/f37///WbSUry+ZzZAAHEApRifPW" +
"KiYmBOSiEUV6e8efPX6tX/9m9m+HXb4bfv0Do129GoBN//2b49YOJgQEggJj+AZ3x9y+zv/+/W7f+P7j/a8cO5qCg/2xs/379AqK/P3/9/" +
"QVCf4Dc30DdDAABBNLA8Ocvg6gIk77+z1Wrmays/vPwMIiI/P8N0gB0z3+wTiD5/8+fPwwMAAHEBHIu0K0vXv7evIklIODP9u0M37//e/7" +
"838+fIEU/f0JVg20AKgYIIKAfGBiBdi1ZwpaY+F9SgkVN7Wdt7f83bxjBZgOdDvEA0HgmIGJgAAggFqAt/3h4/j169K29AxRQwOD78pWBi" +
"+s/K+s/sDpwKAFj588/QUFghAEEEMups9+1pFlAgQ0Nc0iog6MCLAQR/weSY9hx6jVAADEyx3/9+wEWkcB4BRryC4kLj+l/QDYDAx8DQIA" +
"BAA2EWORnICKSAAAAAElFTkSuQmCC";
KR.alt = "Korea";
KR.title = "Korean";
KR.style.cursor = "pointer";
KR.onclick = function() {
var problemID = getProblemID();
if (! isNaN(problemID) && problemID !== -1) {
setNewTranslation(problemID, "kr");
}
};
return KR;
}
function getRUFlag()
{
var RU = document.createElement("img");
RU.src = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAALCAIAAAD5gJpuAAAABGdBTUEAAK/INwWK6QAAABl0RVh0U29mdHd" +
"hcmUAQWRvYmUgSW1hZ2VSZWFkeXHJZTwAAAE2SURBVHjaYvz69T8DAvz79w9CQVj/0MCffwwAAcQClObiAin6/x+okxHMgPCAbOb//5n+I" +
"4EXL74ABBALxGSwagTjPzbAyMgItAQggBg9Pf9nZPx//x7kjL9////9C2QAyf9//qCQQCQkxFhY+BEggFi2b/+nq8v46BEDSPQ3w+8//3/" +
"/BqFfv9BJeXmQEwACCOSkP38YgHy4Bog0RN0vIOMXVOTPH6Cv/gEEEEgDxFKgHEgDXCmGDUAE1AAQQCybGZg1f/d8//XsH0jTn3+///z79" +
"RtE/v4NZfz68xfI/vOX+4/0ZoZFAAHE4gYMvD+3/v2+h91wCANo9Z+/jH9VxBkYAAKIBRg9TL//MEhKAuWAogxgZzGC2CCfgUggAoYdGAE" +
"VAwQQ41egu5AQAyoXTQoIAAIMAD+JZR7YOGEWAAAAAElFTkSuQmCC";
RU.alt = "Russia";
RU.title = "Russian";
RU.style.cursor = "pointer";
RU.onclick = function() {
var problemID = getProblemID();
if (! isNaN(problemID) && problemID !== -1) {
setNewTranslation(problemID, "ru");
}
};
return RU;
}
function getUKFlag()
{
var UK = document.createElement("img");
UK.src = "data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAALCAIAAAD5gJpuAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJ" +
"lYWR5ccllPAAAAflJREFUeNpinDRzn5qN3uFDt16+YWBg+Pv339+KGN0rbVP+//2rW5tf0Hfy/2+mr99+yKpyOl3Ydt8njEWIn8f9zj639" +
"NC7j78eP//8739GVUUhNUNuhl8//ysKeZrJ/v7z10Zb2PTQTIY1XZO2Xmfad+f7XgkXxuUrVB6cjPVXef78JyMjA8PFuwyX7gAZj97+T2e" +
"9o3d4BWNp84K1NzubTjAB3fH0+fv6N3qP/ir9bW6ozNQCijB8/8zw/TuQ7r4/ndvN5mZgkpPXiis3Pv34+ZPh5t23//79Rwehof/9/NDEg" +
"MrOXHvJcrllgpoRN8PFOwy/fzP8+gUlgZI/f/5xcPj/69e/37//AUX+/mXRkN555gsOG2xt/5hZQMwF4r9///75++f3nz8nr75gSms82jf" +
"vQnT6zqvXPjC8e/srJQHo9P9fvwNtAHmG4f8zZ6dDc3bIyM2LTNlsbtfM9OPHH3FhtqUz3eXX9H+cOy9ZMB2o6t/Pn0DHMPz/b+2wXGTvP" +
"lPGFxdcD+mZyjP8+8MUE6sa7a/xo6Pykn1s4zdzIZ6///8zMGpKM2pKAB0jqy4UE7/msKat6Jw5mafrsxNtWZ6/fjvNLW29qv25pQd///n" +
"+5+/fxDDVbcc//P/zx/36m5Ub9zL8+7t66yEROcHK7q5bldMBAgwADcRBCuVLfoEAAAAASUVORK5CYII=";
UK.alt = "United Kingdom";
UK.title = "British English";
UK.style.cursor = "pointer";
UK.onclick = function() {
var problemID = getProblemID();
if (! isNaN(problemID) && problemID !== -1) {
setNewTranslation(problemID, "en");
}
};
return UK;
}
function insertFlags()
{
var UK = getUKFlag(); //UK
var RO = getROFlag(); //Romania
var RU = getRUFlag(); //Russia
var KR = getKRFlag(); //Korea
var DE = getDEFlag(); //Germany
var flagsParagraph = document.createElement("p");
UK.style.marginRight = "12px";
RO.style.marginRight = "12px";
RU.style.marginRight = "12px";
KR.style.marginRight = "12px";
flagsParagraph.appendChild(UK);
flagsParagraph.appendChild(RO);
flagsParagraph.appendChild(RU);
flagsParagraph.appendChild(KR);
flagsParagraph.appendChild(DE);
flagsParagraph.style.display = "block";
flagsParagraph.style.marginLeft = "auto";
flagsParagraph.style.marginRight = "auto";
flagsParagraph.style.textAlign = "center";
// reference node
var refNode = document.getElementById("content");
// insert before
refNode.parentNode.insertBefore(flagsParagraph, refNode);
}
function insertTranslationProcessing()
{
var pscript = document.createElement('script');
pscript.setAttribute('type', 'text/javascript');
pscript.setAttribute('src', 'https://raw.githubusercontent.com/SoboLAN/projecteuler-translation-script/master/processtranslation.js');
var bodyElement = document.getElementsByTagName('body')[0];
bodyElement.insertBefore(pscript, bodyElement.firstChild);
}
var problemID = getProblemID();
if (! isNaN(problemID) && problemID !== -1) {
insertFlags();
insertTranslationProcessing();
}