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/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
*
* 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.
*
* The Original Code is AdBlock for Mozilla.
*
* The Initial Developer of the Original Code is
* Henrik Aasted Sorensen.
* Portions created by the Initial Developer are Copyright (C) 2002
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Henrik Aasted Sorensen <henrik@aasted.org>
* Stefan Kinitz <mcmurmel.blah@gmx.de>
* Rue <quill@ethereal.net>
*
* ***** END LICENSE BLOCK ***** */
Components.utils.import('resource://greasemonkey/util.js');
var EXPORTED_SYMBOLS = ['GM_convert2RegExp'];
var tldRegExp = /^([^:]+:\/\/[^\/]+)\.tld(\/.*)?$/;
var eTldService = Components
.classes["@mozilla.org/network/effective-tld-service;1"]
.getService(Components.interfaces.nsIEffectiveTLDService);
// Exposed outer method takes regex as string, and handles the magic TLD.
// (Can't memoize a URI object, yet we want to do URL->URI outside this method,
// once for efficiency. Compromise: memoize just the internal string handling.)
function GM_convert2RegExp(pattern, uri, forceGlob) {
var reStr = GM_convert2RegExpInner(pattern, forceGlob);
// Inner returns a RegExp, not str, for input regex (not glob) patterns.
// Use those directly without magic TLD modifications.
if (reStr instanceof RegExp) return reStr;
if (uri && reStr.match(tldRegExp)) {
var tld = null;
try {
tld = eTldService.getPublicSuffix(uri);
} catch (e) {
// There are expected failure modes, i.e. bare hostname -- like
// http://localhost/ -- has no TLD.
}
if (tld) {
reStr = reStr.replace(tldRegExp, '$1.' + tld + '$2');
}
}
return new RegExp(reStr, "i");
}
// Memoized internal implementation just does glob -> regex translation.
function GM_convert2RegExpInner(pattern, forceGlob) {
var s = new String(pattern);
if (!forceGlob && '/' == s.substr(0, 1) && '/' == s.substr(-1, 1)) {
// Leading and trailing slash means raw regex.
return new RegExp(s.substring(1, s.length - 1), 'i');
}
var res = "^";
for (var i = 0 ; i < s.length ; i++) {
switch(s[i]) {
case "*" :
res += ".*";
break;
case "." :
case "?" :
case "^" :
case "$" :
case "+" :
case "{" :
case "}" :
case "[" :
case "]" :
case "|" :
case "(" :
case ")" :
case "\\" :
res += "\\" + s[i];
break;
case " " :
// Remove spaces from URLs.
break;
default :
res += s[i];
break;
}
}
return res + "$";
}
GM_convert2RegExpInner = GM_util.memoize(GM_convert2RegExpInner);
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