File indexing completed on 2024-04-14 14:23:10

 /* This file is part of the KDE project
 
    Copyright (C) 2005 Ivor Hewitt     <ivor@kde.org>
    Copyright (C) 2008 Maksim Orlovich <maksim@kde.org>
    Copyright (C) 2008 Vyacheslav Tokarev <tsjoker@gmail.com>
 
    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Library General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.
 
    This library 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
    Library General Public License for more details.
 
    You should have received a copy of the GNU Library General Public License
    along with this library; see the file COPYING.LIB.  If not, write to
    the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
    Boston, MA 02110-1301, USA.
 */
 
 #include <QString>
 #include <QRegExp>
 #include <QVector>
 #include <wtf/HashMap.h>
 #include <QHash>
 #include <QBitArray>
 
 namespace khtml
 {
 
 // Updateable Multi-String Matcher based on Rabin-Karp's algorithm
 class StringsMatcher
 {
 public:
     // add filter to matching set
     void addString(const QString &pattern);
 
     // check if string matches at least one string from matching set,
     // optionally return the matching string or filter
     bool isMatched(const QString &str, QString *by = nullptr) const;
 
     // add filter to matching set with wildcards (*,?) in it
     void addWildedString(const QString &prefix, const QRegExp &rx);
 
     void clear();
 
 private:
     QVector<QString> stringFilters;
     QVector<QString> shortStringFilters;
     QVector<QRegExp> reFilters;
     QVector<QString> rePrefixes;
     QBitArray fastLookUp;
 
     WTF::HashMap<int, QVector<int> > stringFiltersHash;
 };
 
 // This represents a set of filters that may match URLs.
 // Currently it supports a subset of AddBlock Plus functionality.
 class FilterSet
 {
 public:
     // Parses and registers a filter. This will also strip @@ for exclusion rules, skip comments, etc.
     // The user does have to split black and white lists into separate sets, however
     void addFilter(const QString &filter);
 
     bool isUrlMatched(const QString &url);
     QString urlMatchedBy(const QString &url);
 
     void clear();
 
 private:
     QVector<QRegExp> reFilters;
     StringsMatcher stringFiltersMatcher;
 };
 
 }