uBlock/src/js/scriptlets/cosmetic-logger.js

/*******************************************************************************

    uBlock - a browser extension to block requests.
    Copyright (C) 2015 Raymond Hill

    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/}.

    Home: https://github.com/gorhill/uBlock
*/

/* global vAPI, HTMLDocument */

/******************************************************************************/

(function() {

'use strict';

/******************************************************************************/

// https://github.com/gorhill/uBlock/issues/464
if ( document instanceof HTMLDocument === false ) {
    return;
}

// This can happen
if ( typeof vAPI !== 'object' ) {
    return;
}

/******************************************************************************/

var loggedSelectors = vAPI.loggedSelectors || {};

var injectedSelectors = [];
var reProperties = /\s*\{[^}]+\}\s*/;
var i;
var styles = vAPI.styles || [];

i = styles.length;
while ( i-- ) {
    injectedSelectors = injectedSelectors.concat(styles[i].textContent.replace(reProperties, '').split(/\s*,\n\s*/));
}

if ( injectedSelectors.length === 0 ) {
    return;
}

var matchedSelectors = [];
var selector;

i = injectedSelectors.length;
while ( i-- ) {
    selector = injectedSelectors[i];
    if ( loggedSelectors.hasOwnProperty(selector) ) {
        continue;
    }
    if ( document.querySelector(selector) === null ) {
        continue;
    }
    loggedSelectors[selector] = true;
    matchedSelectors.push(selector);
}

vAPI.loggedSelectors = loggedSelectors;

/******************************************************************************/

var localMessager = vAPI.messaging.channel('scriptlets');

localMessager.send({
    what: 'logCosmeticFilteringData',
    frameURL: window.location.href,
    frameHostname: window.location.hostname,
    matchedSelectors: matchedSelectors
}, function() {
    localMessager.close();
    localMessager = null;
});

/******************************************************************************/

})();

/******************************************************************************/