1 /**************************************************************************** 2 ** 3 ** Copyright (C) 2016 The Qt Company Ltd. 4 ** Contact: https://www.qt.io/licensing/ 5 ** 6 ** This file is part of the QtCore module of the Qt Toolkit. 7 ** 8 ** $QT_BEGIN_LICENSE:LGPL$ 9 ** Commercial License Usage 10 ** Licensees holding valid commercial Qt licenses may use this file in 11 ** accordance with the commercial license agreement provided with the 12 ** Software or, alternatively, in accordance with the terms contained in 13 ** a written agreement between you and The Qt Company. For licensing terms 14 ** and conditions see https://www.qt.io/terms-conditions. For further 15 ** information use the contact form at https://www.qt.io/contact-us. 16 ** 17 ** GNU Lesser General Public License Usage 18 ** Alternatively, this file may be used under the terms of the GNU Lesser 19 ** General Public License version 3 as published by the Free Software 20 ** Foundation and appearing in the file LICENSE.LGPL3 included in the 21 ** packaging of this file. Please review the following information to 22 ** ensure the GNU Lesser General Public License version 3 requirements 23 ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. 24 ** 25 ** GNU General Public License Usage 26 ** Alternatively, this file may be used under the terms of the GNU 27 ** General Public License version 2.0 or (at your option) the GNU General 28 ** Public license version 3 or any later version approved by the KDE Free 29 ** Qt Foundation. The licenses are as published by the Free Software 30 ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 31 ** included in the packaging of this file. Please review the following 32 ** information to ensure the GNU General Public License requirements will 33 ** be met: https://www.gnu.org/licenses/gpl-2.0.html and 34 ** https://www.gnu.org/licenses/gpl-3.0.html. 35 ** 36 ** $QT_END_LICENSE$ 37 ** 38 ****************************************************************************/ 39 40 #ifndef QMIMEMAGICRULE_P_H 41 #define QMIMEMAGICRULE_P_H 42 43 // 44 // W A R N I N G 45 // ------------- 46 // 47 // This file is not part of the Qt API. It exists purely as an 48 // implementation detail. This header file may change from version to 49 // version without notice, or even be removed. 50 // 51 // We mean it. 52 // 53 54 #include <QtCore/private/qglobal_p.h> 55 56 QT_REQUIRE_CONFIG(mimetype); 57 58 #include <QtCore/qbytearray.h> 59 #include <QtCore/qscopedpointer.h> 60 #include <QtCore/qlist.h> 61 62 QT_BEGIN_NAMESPACE 63 64 class QMimeMagicRule 65 { 66 public: 67 enum Type { Invalid = 0, String, Host16, Host32, Big16, Big32, Little16, Little32, Byte }; 68 69 QMimeMagicRule(const QString &typeStr, const QByteArray &value, const QString &offsets, 70 const QByteArray &mask, QString *errorString); 71 swap(QMimeMagicRule & other)72 void swap(QMimeMagicRule &other) noexcept 73 { 74 qSwap(m_type, other.m_type); 75 qSwap(m_value, other.m_value); 76 qSwap(m_startPos, other.m_startPos); 77 qSwap(m_endPos, other.m_endPos); 78 qSwap(m_mask, other.m_mask); 79 qSwap(m_pattern, other.m_pattern); 80 qSwap(m_number, other.m_number); 81 qSwap(m_numberMask, other.m_numberMask); 82 qSwap(m_matchFunction, other.m_matchFunction); 83 } 84 85 bool operator==(const QMimeMagicRule &other) const; 86 type()87 Type type() const { return m_type; } value()88 QByteArray value() const { return m_value; } startPos()89 int startPos() const { return m_startPos; } endPos()90 int endPos() const { return m_endPos; } 91 QByteArray mask() const; 92 isValid()93 bool isValid() const { return m_matchFunction != nullptr; } 94 95 bool matches(const QByteArray &data) const; 96 97 QList<QMimeMagicRule> m_subMatches; 98 99 static Type type(const QByteArray &type); 100 static QByteArray typeName(Type type); 101 102 static bool matchSubstring(const char *dataPtr, int dataSize, int rangeStart, int rangeLength, int valueLength, const char *valueData, const char *mask); 103 104 private: 105 Type m_type; 106 QByteArray m_value; 107 int m_startPos; 108 int m_endPos; 109 QByteArray m_mask; 110 111 QByteArray m_pattern; 112 quint32 m_number; 113 quint32 m_numberMask; 114 115 typedef bool (QMimeMagicRule::*MatchFunction)(const QByteArray &data) const; 116 MatchFunction m_matchFunction; 117 118 private: 119 // match functions 120 bool matchString(const QByteArray &data) const; 121 template <typename T> 122 bool matchNumber(const QByteArray &data) const; 123 }; 124 Q_DECLARE_SHARED(QMimeMagicRule) 125 126 QT_END_NAMESPACE 127 128 #endif // QMIMEMAGICRULE_H 129