TV by the Numbers.js

{
	"translatorID": "180a62bf-efdd-4d38-8d85-8971af04dd85",
	"label": "TV by the Numbers",
	"creator": "odie5533",
	"target": "^https?://tvbythenumbers\\.com",
	"minVersion": "1.0",
	"maxVersion": "",
	"priority": 100,
	"inRepository": true,
	"translatorType": 4,
	"browserSupport": "g",
	"lastUpdated": "2014-04-04 10:18:02"
}

/*
	TV by the Numbers - translator for Zotero
	Copyright (C) 2010 odie5533

	This program is free software: you can redistribute it and/or modify
	it under the terms of the GNU General Public License as published by
	the Free Software Foundation, either version 3 of the License, or
	(at your option) any later version.

	This program is distributed in the hope that it will be useful,
	but WITHOUT ANY WARRANTY; without even the implied warranty of
	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
	GNU General Public License for more details.

	You should have received a copy of the GNU General Public License
	along with this program.  If not, see <http://www.gnu.org/licenses/>.
*/

/*
	This translator supports saving a snapshot of a single post and saving
	the citation of many posts at once without visiting each post. Thus, it does
	not save a snapshot when multiple citations are to be saved.
*/


PUB_TITLE = "TV by the Numbers";
XPATH_TITLE = "//title";
XPATH_PAGES = null;
XPATH_DATE = "substring-after(substring-before(string(//p[@class='posted_on']),' by '), 'on ')";
RE_DATE = /(.*)/;
XPATH_AUTHORS = "substring-after(string(//p[@class='posted_on']),' by ')";
RE_AUTHORS = /(.*)/;

function detectWeb(doc, url) {
	/* site has lots of garbage, check we're on the right doc */
	if (!xpath_string(doc, doc, XPATH_TITLE))
		return;
	var posts = doc.evaluate("count(//div[@class='post-alt blog'])", doc, null,
		XPathResult.NUMBER_TYPE, null).numberValue;
	if (posts  == 1)
		return "webpage";
	else if (posts > 1)
		return "multiple";
}

function xpath_string(doc, node, xpath) {
	var res = doc.evaluate(xpath, node, null, XPathResult.STRING_TYPE, null);
	if (!res || !res.stringValue)
		return null;
	return Zotero.Utilities.trim(res.stringValue);
}

function xpre(doc, node, xpath, reg) {
	var xpmatch = xpath_string(doc, node, xpath);
	return reg.exec(xpmatch)[1];
}

function scrape(doc, url) {
	var items = new Array();
	var posts = doc.evaluate("//div[@class='post-alt blog']", doc, null,
		XPathResult.ANY_TYPE, null);
		
	var post_count = 0;

	while (post = posts.iterateNext()) {
		var newItem = new Zotero.Item("webpage");
		newItem.publicationTitle = PUB_TITLE;
		
		var link = post.getElementsByTagName("a")[0];
		newItem.url = link.href;
		
		var title = Zotero.Utilities.unescapeHTML(
			Zotero.Utilities.cleanTags(link.textContent));
		title = title.replace(/(\s+)(?:‘|’)|(?:‘|’)(\s+)/g, "$1''$2").replace(/‘|’/g, "'");
		newItem.title = title;
		
		if (XPATH_DATE)
			newItem.date = xpre(doc, post, XPATH_DATE, RE_DATE);
		if (XPATH_PAGES)
			newItem.pages = xpath_string(doc, post, XPATH_PAGES);
		
		//authors
		var author_text = xpre(doc, post, XPATH_AUTHORS, RE_AUTHORS);
		var authors = [];
		if (author_text) {
			if (author_text.indexOf(" and ") != -1)
				authors = author_text.split(" and ");
			else if (author_text.indexOf(";") != -1)
				authors = author_text.split(";");
			else
				authors.push(author_text);
		}
		for each(var a in authors)
			if (a != 'null')
				newItem.creators.push(
					Zotero.Utilities.cleanAuthor(a, "author"));

		// attach html
		if (url == newItem.url)
			newItem.attachments.push({title:PUB_TITLE+" Snapshot",
				mimeType:"text/html", url:doc.location.href, snapshot:true});
		
		newItem.toString = function() { return this.title; };
		items[newItem.url] = newItem;
		post_count++;
	}
	
	/* a stupidly complex way of calling selectItems, and then completing
	   the items which were selected */
	if (post_count > 1) {
		var sel_items = new Object();
		for each(var i in items)
			sel_items[i.url] = i.title;
		sel_items = Zotero.selectItems(sel_items);
		
		for (var i in sel_items)
			items[i].complete();
	} else if (post_count == 1)
		for each(var i in items)
			i.complete();
}

function doWeb(doc, url) {
	scrape(doc, url);
}