Provides translations in Romanian, Russian, Korean and German for Project Euler problems
当前为
/*******************************************************************************
* Copyright (c) 2012 - 2014 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.
* 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.
* The technique behind 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 another file,
* which is retrieved from the server every time. That function will be executed
* when the response comes back.
*
* The romanian and british versions of the problems come from the same server as the backend part
* of the script; the other 3 are parsed from the corresponding translations websites:
*
* - http://euler.jakumo.org/ for Russian,
* - http://euler.synap.co.kr/ for Korean and
* - http://projekteuler.de for German
*
* If a problem is not translated, the word 'NONE' is sent back from the
* server, a response which the script ignores.
*
* The 5 flag images are stored inside the script in Base64 format, to avoid
* additional HTTP requests.
*
* As you can see: the script can be very easily extended to include
* translations in dozens of languages; in this context, it is highly scalable.
*
*******************************************************************************/
/***************************************************
*
* 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.
*
* 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 1.6
// @icon http://projecteuler.javafling.org/favicon.ico
// @include http://projecteuler.net/problem=*
// @grant none
// @namespace https://greasyfork.org/users/5099
// ==/UserScript==
function setNewTranslation(problem, lang)
{
var script = document.createElement('script');
script.setAttribute('src', 'http://projecteuler.javafling.org/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" +
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"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" +
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"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" +
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"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" +
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"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" +
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"+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', 'http://projecteuler.javafling.org/processtranslation.js');
var bodyElement = document.getElementsByTagName('body')[0];
bodyElement.insertBefore(pscript, bodyElement.firstChild);
}
var problemID = getProblemID();
if (! isNaN(problemID) && problemID !== -1) {
insertFlags();
insertTranslationProcessing();
}