1 files changed, 105 insertions, 0 deletions
diff --git a/src/adblock/adblockrulefallbackimpl.cpp b/src/adblock/adblockrulefallbackimpl.cpp
new file mode 100644
index 00000000..decb895d
--- /dev/null
+++ b/src/adblock/adblockrulefallbackimpl.cpp
@@ -0,0 +1,105 @@
+/* ============================================================
+*
+* This file is a part of the rekonq project
+*
+* Copyright (C) 2010 by Benjamin Poulain <ikipou at gmail dot com>
+*
+*
+* 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 2 of
+* the License or (at your option) version 3 or any later version
+* accepted by the membership of KDE e.V. (or its successor approved
+* by the membership of KDE e.V.), which shall act as a proxy
+* defined in Section 14 of version 3 of the license.
+*
+* 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/>.
+*
+* ============================================================ */
+
+// Self Includes
+#include "adblockrulefallbackimpl.h"
+
+// Rekonq Includes
+#include "rekonq_defines.h"
+
+// Qt Includes
+#include <QStringList>
+
+static inline bool isRegExpFilter(const QString &filter)
+{
+    return filter.startsWith(QL1C('/')) && filter.endsWith(QL1C('/'));
+}
+
+AdBlockRuleFallbackImpl::AdBlockRuleFallbackImpl(const QString &filter)
+    : AdBlockRuleImpl(filter)
+{
+    m_regExp.setCaseSensitivity(Qt::CaseInsensitive);
+    m_regExp.setPatternSyntax(QRegExp::RegExp2);
+
+    QString parsedLine = filter;
+
+    const int optionsNumber = parsedLine.lastIndexOf(QL1C('$'));
+    if (optionsNumber >= 0 && !isRegExpFilter(parsedLine)) {
+        const QStringList options(parsedLine.mid(optionsNumber + 1).split(QL1C(',')));
+        if (options.contains(QL1S("match-case")))
+            m_regExp.setCaseSensitivity(Qt::CaseSensitive);
+        parsedLine = parsedLine.left(optionsNumber);
+    }
+
+    if (isRegExpFilter(parsedLine))
+        parsedLine = parsedLine.mid(1, parsedLine.length() - 2);
+    else
+        parsedLine = convertPatternToRegExp(parsedLine);
+
+    m_regExp.setPattern(parsedLine);
+}
+
+bool AdBlockRuleFallbackImpl::match(const QString &encodedUrl) const
+{
+    return m_regExp.indexIn(encodedUrl) != -1;
+}
+
+QString AdBlockRuleFallbackImpl::convertPatternToRegExp(const QString &wildcardPattern)
+{
+    QString pattern = wildcardPattern;
+
+    // remove multiple wildcards
+    pattern.replace(QRegExp(QL1S("\\*+")), QL1S("*"));
+
+    // remove anchors following separator placeholder
+    pattern.replace(QRegExp(QL1S("\\^\\|$")), QL1S("^"));
+
+    // remove leading wildcards
+    pattern.replace(QRegExp(QL1S("^(\\*)")), QL1S(""));
+
+    // remove trailing wildcards
+    pattern.replace(QRegExp(QL1S("(\\*)$")), QL1S(""));
+
+    // escape special symbols
+    pattern.replace(QRegExp(QL1S("(\\W)")), QL1S("\\\\1"));
+
+    // process extended anchor at expression start
+    pattern.replace(QRegExp(QL1S("^\\\\\\|\\\\\\|")), QL1S("^[\\w\\-]+:\\/+(?!\\/)(?:[^\\/]+\\.)?"));
+
+    // process separator placeholders
+    pattern.replace(QRegExp(QL1S("\\\\\\^")), QL1S("(?:[^\\w\\d\\-.%]|$)"));
+
+    // process anchor at expression start
+    pattern.replace(QRegExp(QL1S("^\\\\\\|")), QL1S("^"));
+
+    // process anchor at expression end
+    pattern.replace(QRegExp(QL1S("\\\\\\|$")), QL1S("$"));
+
+    // replace wildcards by .*
+    pattern.replace(QRegExp(QL1S("\\\\\\*")), QL1S(".*"));
+
+    // Finally, return...
+    return pattern;
+}