EWG-Database-Chrome-Extension/background.html at master · Detect/EWG-Database-Chrome-Extension · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
<html>
<body>
<script src="jquery.js"></script>
<script>

function onRequest(request, sender, callback) {
        if (request.action == 'searchPrice') {
          search(request.text, request.pId, callback);
        }
}

chrome.extension.onRequest.addListener(onRequest);

function search(text, pId, cb) {
	//console.log("search", arguments);
	var a = {};
	a.text = text;
	a.url = "http://www.google.com/search?btnI=I'm Feeling Lucky&q=" + text
	a.pId = pId;
	a.cb = cb;
	getUrl("http://www.google.com/search", {
        /*btnI: "I'm Feeling Lucky",*/
		q: text
		}, bind(a, getPrice)
	);
}

function getUrl(url, data, cb)
{
	$.get(url, data, cb);
}

function bind(scope, fn) {
	return function() {
		fn.apply(scope, arguments);
	};
}

function getPrice(data) {
	if(data.indexOf(" - Google Search") !== -1)
	{
		var a = {};
		var urls = $(".l", data);
		urls = urls.filter(function() {
			var newa = $("<a>").attr("href", $(this).attr("href"));
			return newa[0].pathname.length > 1;
		});
		a.url = urls.first().attr('href');
		a.text = this.text;
		a.pId = this.pId;
		a.cb = this.cb;
		getUrl(a.url, {}, bind(a, getPrice));
	}
	else
	{
		data = data.substring(data.search(/<.*body/i));
		var res = data.match(/^(?!\u00a2) \p{Sc}? (?!0,?\d) (\d{1,3} (\,\d{3})* |(\d+))  (\.\d{2})?$/g);
		if(res && res.length) {
			listPrice(res, this.text, this.url, this.pId, this.cb);
		} else {
			res = data.match(/\d+\.\d{2}/g);
			if(res && res.length) {
				listPrice(res, this.text, this.url, this.pId, this.cb);
			}
		}
	}
}

function listPrice(res, text, url, pId, cb) {
	var arr = $.grep(res, function(n, i){
		n = n.replace(/[^0-9\.]+/g,"");
		return (parseFloat(n) > 0 && parseFloat(n) < 200);
	});
	if(arr.length)
	{
		//console.log("Possible prices for " + text, arr, url, pId, cb);
		var data = {pId: pId, url: url, price: arr[0]};
		cb(data);
	}
}
</script>
</body>
</html>