Google China

By Drew — Last update Jun 26, 2008 — Installed 674 times.

• About
• Source Code
• Reviews 0
• Discussions 0
• Fans 0
• Share

// ==UserScript==
// @name          Google China
// @namespace     
// @description   When the user queries Google, the script also queries Google China.  The script inserts the number of results reported by Google China following the number of results reported by Google.  Click the number of results reported by Google China to show the first Google China result.
// @include       http://www.google.*/search*
// ==/UserScript==

var $A = Array.from = function(iterable) {
    if (!iterable) return [];
    if (iterable.toArray) {
        return iterable.toArray();
    }
    else {
        var results = [];
        for (var i = 0; i < iterable.length; i++) {
            results.push(iterable[i]);
        }

            return results;
    }
}

Function.prototype.bind = function() {
    var __method = this, args = $A(arguments), object = args.shift();

    return function() {
        return __method.apply(object, args.concat($A(arguments)));
    }
}

function hasNode(xpath, contextDocument) {
    if(contextDocument) {
        return contextDocument.evaluate('count(' + xpath + ')', contextDocument, null, XPathResult.NUMBER_TYPE, null).numberValue != 0;
    }
    else {
        return document.evaluate('count(' + xpath + ')', document, null, XPathResult.NUMBER_TYPE, null).numberValue != 0;
    }
}

function stringFor(xpath, contextDocument) {
    if(contextDocument) {
        return contextDocument.evaluate(xpath, contextDocument, null, XPathResult.STRING_TYPE, null).stringValue;
    }
    else {
        return document.evaluate(xpath, document, null, XPathResult.STRING_TYPE, null).stringValue;
    }
}

function nodeFor(xpath, contextDocument) {
    if(contextDocument) {
        return contextDocument.evaluate(xpath, contextDocument, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
    }
    else {
        return document.evaluate(xpath, document, null, XPathResult.FIRST_ORDERED_NODE_TYPE, null).singleNodeValue;
    }
}

function nodeIteratorFor(xpath, contextDocument) {
    if(contextDocument) {
        return contextDocument.evaluate(xpath, contextDocument, null, XPathResult.ORDERED_NODE_ITERATOR_TYPE, null);
    }
    else {
        return document.evaluate(xpath, document, null, XPathResult.ORDERED_NODE_ITERATOR_TYPE, null);
    }
}

function nodeSnapshotFor(xpath, contextDocument) {
    if(contextDocument) {
        return contextDocument.evaluate(xpath, contextDocument, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    }
    else {
        return document.evaluate(xpath, document, null, XPathResult.ORDERED_NODE_SNAPSHOT_TYPE, null);
    }
}

function GreaseFrame() {
}

GreaseFrame.prototype.statusUnknown = 0;
GreaseFrame.prototype.statusPresent = 1;
GreaseFrame.prototype.statusAbsent  = 2;
GreaseFrame.prototype.statusError   = 3;
GreaseFrame.prototype.status        = GreaseFrame.prototype.statusUnknown;

GreaseFrame.prototype.request = function(url, callback) {
	this.callback = callback;

	GM_xmlhttpRequest({
		url:     url,
		method:  'GET',
		onload:  this.load.bind(this),
		onerror: this.error.bind(this)
	});
}

GreaseFrame.prototype.load = function(response) {
	var iframe;

	iframe = document.createElement('iframe'); 
	iframe.style.position   = 'absolute';
	iframe.style.visibility = 'hidden';
	iframe.style.width      = '95%';
	iframe.style.height     = '0px';

	if(this.iframe) {
		document.body.replaceChild(iframe, this.iframe);
	}
	else {
		document.body.appendChild(iframe);
	}

	this.iframe = iframe;
	
	with(iframe) {
		contentWindow.addEventListener('load', this.post.bind(this, iframe.contentDocument), false);
      	contentWindow.location.href = location.href;
      	contentDocument.open("text/html");
		contentDocument.write(response.responseText.replace(/<script(.|\s)*?>(.|\s)*?<\/script>/gmi, ''));
		contentDocument.close();
	}
} 

GreaseFrame.prototype.post = function(document) {
	this.callback(this.parse(document));
}

GreaseFrame.prototype.error = function(response) {
	this.status = this.statusError;
}

function GoogleChina() {
}

GoogleChina.prototype                 = new GreaseFrame();
GoogleChina.prototype.xpath           = new Object();
GoogleChina.prototype.xpath['result'] = '/HTML[1]/BODY[1]/TABLE[2]/TBODY[1]/TR[1]/TD[2]/FONT[1]/B[1]/text()[1]';

GoogleChina.prototype.location = function() {
	return location.protocol + '//www.google.cn' + 
		location.pathname +
		location.search.replace(/([?&])(hl=[^&]*)/gi, '$1hl=zh-cn');
}

GoogleChina.prototype.get = function(key, document) {
    return stringFor(this.xpath[key], document);
}

GoogleChina.prototype.build = function(callback) {
	this.request(this.location(), callback);
}

GoogleChina.prototype.parse = function(document) {
    this.result = this.get('result', document);

    return this;
}

Google.prototype.xpath             = new Object();
Google.prototype.xpath['context']  = '/HTML[1]/BODY[1]/TABLE[2]/TBODY[1]/TR[1]/TD[2]/FONT[1]';

function Google() {
	if(window == window.top) {
		addEventListener('load', this.initialize.bind(this), false);
	}
}

Google.prototype.get = function(key) {
    return stringFor(this.xpath[key]).replace(/^\s+|\s+$/g,"");
}

Google.prototype.nodeFor = function(key) {
    return nodeFor(this.xpath[key]);
}

Google.prototype.initialize = function() {
	new GoogleChina().build(this.render.bind(this));
}

Google.prototype.render = function(googleChina) {
	var contextNode = this.nodeFor('context');
	contextNode.innerHTML = contextNode.innerHTML.replace(/\(.*\)/g, '(About <b>' + googleChina.result + '</b> in Google China.)');
}

new Google();