Convert gairaigo (Japanese loan words) back to English
目前為
// ==UserScript==
// @name Katakana Terminator
// @description Convert gairaigo (Japanese loan words) back to English
// @author Arnie97
// @namespace https://github.com/Arnie97
// @homepageURL https://github.com/Arnie97/katakana-terminator
// @icon https://upload.wikimedia.org/wikipedia/commons/2/28/Ja-Ruby.png
// @match *://*/*
// @grant GM.xmlHttpRequest
// @grant GM_xmlhttpRequest
// @grant GM_addStyle
// @connect translate.google.cn
// @version 2020.04.22
// @name:ja-JP カタカナターミネータ
// @name:zh-CN 片假名终结者
// @description:zh-CN 在网页中的日语外来语上方标注英文原词
// ==/UserScript==
// define some shorthands
var _ = document;
// Forked from https://stackoverflow.com/a/4673436/5072722
function format(str) {
var args = Array.prototype.slice.call(arguments, 1);
return str.replace(/{(\d+)}/g, function(match, number) {
return args[number] !== undefined? args[number]: match;
});
}
// Inspired by http://www.the-art-of-web.com/javascript/search-highlight/
function scanTextNodes(node) {
var excludeTags = /^(?:ruby|script|select|textarea)$/i;
if (node === undefined || !node) {
return scanTextNodes(_.body);
} else if (excludeTags.test(node.nodeName)) {
return;
} else if (node.hasChildNodes()) {
return Array.prototype.slice.call(node.childNodes).forEach(scanTextNodes);
} else if (node.nodeType == 3) {
while ((node = addRuby(node)));
}
}
// Inspired by http://www.the-art-of-web.com/javascript/search-highlight/
function addRuby(node) {
var katakana = /[\u30A1-\u30FA\u30FC-\u30FF]+/, match;
if (!node.nodeValue || !(match = katakana.exec(node.nodeValue))) {
return false;
}
var ruby = _.createElement('ruby');
ruby.appendChild(_.createTextNode(match[0]));
var rt = _.createElement('rt');
rt.classList.add('katakana-terminator-rt');
queue[match[0]] = queue[match[0]] || [];
queue[match[0]].push(rt);
ruby.appendChild(rt);
var after = node.splitText(match.index);
node.parentNode.insertBefore(ruby, after);
after.nodeValue = after.nodeValue.substring(match[0].length);
return after;
}
// Forked from https://stackoverflow.com/a/34209399
function buildURL(base, params) {
var query = Object.keys(params).map(function(k) {
var esc = encodeURIComponent;
// Support arrays in parameters, just like Python Requests
// {keyA: 1, keyB: [2, 3]} => '?keyA=1&keyB=2&keyB=3'
if (params[k] instanceof Array) {
return params[k].map(function(v) {
return esc(k) + '=' + esc(v);
}).join('&');
}
return esc(k) + '=' + esc(params[k]);
}).join('&');
return base + '?' + query;
}
function googleTranslate(src, dest, texts) {
var full_text = texts.join('\n').trim();
var api = 'https://translate.google.cn/translate_a/single';
var params = {
client: 't',
sl: src,
tl: dest,
dt: ['rm', 't'],
tk: googleToken(full_text),
q: full_text
};
GM_xmlhttpRequest({
method: "GET",
url: buildURL(api, params),
onload: function(dom) {
var escaped_result = dom.responseText.replace("'", '\u2019');
var translations = JSON.parse(escaped_result)[0];
var romajis = translations.pop().pop().split(' ');
for (var i = 0; i < texts.length; i++) {
var result = (
texts[i].length == 1? // words or single katakanas?
romajis[i].toLowerCase(): // show the romaji
translations[i][0].trim() // show the translation
);
queue[texts[i]].forEach(function (node) { node.dataset.rt = result; });
}
}
});
}
// Forked from https://github.com/cocoa520/Google_TK
function googleToken(r) {
for(var a=406644,e=[],h=0,n=0;n<r.length;n++){var o=r.charCodeAt(n);128>o?e[h++]=o:(2048>o?e[h++]=o>>6|192:(55296==(64512&o)&&n+1<r.length&&56320==(64512&r.charCodeAt(n+1))?(o=65536+((1023&o)<<10)+(1023&r.charCodeAt(++n)),e[h++]=o>>18|240,e[h++]=o>>12&63|128):e[h++]=o>>12|224,e[h++]=o>>6&63|128),e[h++]=63&o|128)}function t(r,t){for(var a=0;a<t.length-2;a+=3){var e=(e=t.charAt(a+2))>="a"?e.charCodeAt(0)-87:Number(e),e="+"==t.charAt(a+1)?r>>>e:r<<e;r="+"==t.charAt(a)?r+e&4294967295:r^e}return r}for(r=a,h=0;h<e.length;h++)r+=e[h],r=t(r,"+-a^+6");return r=t(r,"+-3^+b+-f"),0>(r^=3293161072)&&(r=2147483648+(2147483647&r)),(r%=1e6).toString()+"."+(r^a)
}
// Split word list into chunks to limit the length of API requests
function chunkTranslate(keys, start, end) {
if (start == end) {
return;
}
var texts = keys.slice(start, end);
return googleTranslate('ja', 'en', texts);
}
// Add our CSS style to page
function addCss() {
GM_addStyle("rt.katakana-terminator-rt::before { content: attr(data-rt); }");
}
// Exception handling
function main(app_name) {
try {
addCss();
scanTextNodes();
var keys = Object.keys(queue);
var chunkSize = 200;
for (var i = 0; i + chunkSize < keys.length; i += chunkSize) {
chunkTranslate(keys, i, i + chunkSize);
}
chunkTranslate(keys, i, keys.length);
} catch (e) {
console.error(format('{0}: {1}', app_name, e));
} finally {
console.debug(format('{0}: {1} items found', app_name, Object.keys(queue).length));
}
}
// Polyfill for Greasemonkey 4
if (typeof GM_xmlhttpRequest === 'undefined' &&
typeof GM === 'object' && typeof GM.xmlHttpRequest === 'function') {
GM_xmlhttpRequest = GM.xmlHttpRequest;
}
if (typeof GM_addStyle === 'undefined') {
GM_addStyle = function (aCss) {
var head = document.getElementsByTagName('head')[0];
if (head) {
var style = document.createElement('style');
style.setAttribute('type', 'text/css');
style.textContent = aCss;
head.appendChild(style);
return style;
}
return null;
};
}
var queue = {};
main('Katakana Terminator');