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logic.js
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logic.js
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/*
* Copyright 2005-2009 Jesse Andrews
*
* This file may be used under the terms of of the
* GNU General Public License Version 3 or later (the "GPL"),
* http://www.gnu.org/licenses/gpl.html
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*/
var BBSVC = chrome.extension.getBackgroundPage();
function find_isbn(tab) {
function checkISBN(isbnIn) {
// prefer 10 digit ISBNs until we have a ISBN object ...
var isbn = BBSVC.ISBN.validate(isbnIn);
if (isbn) {
if (isbn.length == 10) {
return isbn;
}
return BBSVC.isbn.convert(isbn) || isbn;
}
};
var href = tab.url;
var title = tab.title;
if (href.match('amazon.com') && !href.match('rate-this')) {
return checkISBN(href.match(/\/(\d{9}[0-9Xx])(\/|\?|$)/)[1]);
}
if (href.match('booksamillion.com')) {
return checkISBN(href.match(/isbn=(\d{9}[0-9Xx])(\&|\?|$)/)[1]);
}
if (href.match('barnesandnoble.com')) {
if (href.toLowerCase().match(/isbn=/)) {
return checkISBN( href.toLowerCase().match(/isbn=(\d{13}|\d{9}[0-9x])(\&|\?|$)/)[1] );
}
if (href.toLowerCase().match(/ean=/)) {
return checkISBN( href.toLowerCase().match(/ean=(\d{13}|\d{9}[0-9x])(\&|\?|$)/)[1] );
}
}
if (href.match('abebooks.com')) {
var isbn=false;
try {
isbn = checkISBN( title.match(/ISBN (\d{13}|\d{9}[0-9Xx])/)[1] );
} catch (e) {};
try {
if (!isbn) isbn = checkISBN( win.body.innerHTML.match(/class="isbn">(\d{13}|\d{9}[0-9Xx])/)[1] );
} catch (e) {};
return isbn;
}
if (href.match('buy.com')) {
try {
return checkISBN( title.match(/ISBN (\d{13}|\d{9}[0-9Xx])/)[1] );
} catch (e) {};
}
if (href.match('powells.com')) {
var dts = win.getElementsByTagName('dt');
for (i=0; i<dts.length; i++) {
if (dts[i].innerHTML.match('ISBN:')) {
return checkISBN(dts[i].nextSibling.firstChild.textContent);
}
}
}
if (href.match('alibris.com')) {
var bs = win.getElementsByTagName('b');
for (i=0; i<bs.length; i++) {
if (bs[i].innerHTML.match('ISBN:')) {
return checkISBN(bs[i].nextSibling.nextSibling.textContent);
}
}
}
if (href.match('half.ebay.com')) {
var bs = win.getElementsByTagName('b');
for (i=0; i<bs.length; i++) {
if (bs[i].innerHTML.match('ISBN-10:')) {
return checkISBN(bs[i].nextSibling.nextSibling.textContent);
}
}
}
if (href.match('books.google.com')) {
return checkISBN( href.match(/vid=ISBN(\d{13}|\d{9}[0-9Xx])/)[1] );
}
if (href.match('worldcatlibraries.org')) {
return checkISBN( href.match(/isbn\/([0-9Xx]{10})/)[1] );
}
if (href.match('bookmooch.com')) {
return checkISBN( href.match(/detail\/(\d{13}|\d{9}[0-9Xx])/)[1] );
}
if (href.match('paperbackswap.com')) {
return checkISBN( href.match(/details\/(\d{13}|\d{9}[0-9Xx])/)[1] );
}
if (href.match('nic.nils.org')) {
var tds = win.getElementsByTagName('td');
for (i=0; i<tds.length; i++) {
if (tds[i].textContent == 'ISBN') {
// occasionally has ISBN_NUMBER : $32.33
// or 0803205198 (electronic bk.)
return checkISBN(tds[i].nextSibling.nextSibling.textContent.match(/(\d{13}|\d{9}[0-9Xx])/)[1]);
}
}
}
// check for the ISBN microformat
if (win.getElementsByClassName) {
var results = win.getElementsByClassName('isbnnumber');
if (results.length == 1) {
var text = results[0].textContent;
return checkISBN(text.match(/(\d{13}|\d{9}[0-9Xx])/)[1]);
}
}
var isbn = href.toLowerCase().match(/isbn=(\d{13}|\d{9}[0-9x])/);
if (isbn) return checkISBN( isbn[1] );
}