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const kRedirectorWildcard = 'W';
const kRedirectorRegex= 'R';
var Redirector = {
list : [],
init : function() {
this.load();
this.prefObserver.register();
},
save : function() {
var r
, tempList = [];
for each (r in this.list) {
tempList.push([r.exampleUrl, r.pattern, r.redirectUrl, r.onlyIfLinkExists, r.patternType]);
}
RedirLib.setCharPref('redirects', tempList.toSource());
},
load : function() {
var tempList = eval(RedirLib.getCharPref('redirects'));
var arr;
this.list = [];
for each (arr in tempList) {
this.list.push({
exampleUrl : arr[0],
pattern : arr[1],
redirectUrl : arr[2],
onlyIfLinkExists : arr[3],
patternType : arr[4]
});
}
},
addRedirect : function(redirect) {
this.list.push(redirect);
this.save();
},
processUrl : function(url) {
var redirect, link, links;
for each (redirect in this.list) {
if (redirect.patternType == kRedirectorWildcard && this.wildcardMatch(redirect.pattern, url)) {
RedirLib.debug('%1 matches %2'._(redirect.pattern, url));
if (redirect.onlyIfLinkExists) {
links = window.content.document.getElementsByTagName('a');
for each(link in links) {
if (link.href && link.href.toString() == redirect.redirectUrl) {
RedirLib.debug('Found a link for %1'._(redirect.redirectUrl));
this._goto(redirect);
return;
}
}
RedirLib.debug('Did not find a link for %1'._(redirect.redirectUrl));
} else {
this._goto(redirect);
}
}
}
},
_goto : function(redirect) {
if (redirect.redirectUrl == window.content.location.href) {
RedirLib.msgBox(this.strings.getString('extensionName'), this.strings.getFormattedString('recursiveError', [redirect.pattern, redirect.redirectUrl]));
} else {
window.content.location.href = redirect.redirectUrl;
}
},
wildcardMatch : function(pattern, text) {
var parts
, part
, i
, pos;
parts = pattern.split('*');
for (i in parts) {
part = parts[i];
pos = text.indexOf(part);
if (pos == -1) {
return false;
}
if (i == 0 && pos != 0) {
return false;
}
if (i == parts.length -1 && i != "" && text.substr(text.length - part.length) != part) {
return false;
}
text = text.substr(pos + part.length);
}
return true;
},
prefObserver : {
getService : function() {
return Cc["@mozilla.org/preferences-service;1"].getService(Ci.nsIPrefBranchInternal);
},
register: function() {
this.getService().addObserver('extensions.redirector', this, false);
},
unregister: function() {
this.getService().removeObserver('extensions.redirector', this);
},
observe : function(subject, topic, data) {
if (topic == 'nsPref:changed' && data == 'extensions.redirector.redirects') {
Redirector.load();
}
}
},
};
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