| 1 | // Copyright (C) 2016 The Qt Company Ltd. |
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| 2 | // SPDX-License-Identifier: LicenseRef-Qt-Commercial OR LGPL-3.0-only OR GPL-2.0-only OR GPL-3.0-only |
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| 3 | |
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| 4 | #ifndef QMIMEMAGICRULE_P_H |
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| 5 | #define QMIMEMAGICRULE_P_H |
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| 6 | |
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| 7 | // |
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| 8 | // W A R N I N G |
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| 9 | // ------------- |
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| 10 | // |
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| 11 | // This file is not part of the Qt API. It exists purely as an |
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| 12 | // implementation detail. This header file may change from version to |
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| 13 | // version without notice, or even be removed. |
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| 14 | // |
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| 15 | // We mean it. |
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| 16 | // |
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| 17 | |
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| 18 | #include <QtCore/private/qglobal_p.h> |
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| 19 | |
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| 20 | QT_REQUIRE_CONFIG(mimetype); |
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| 21 | |
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| 22 | #include <QtCore/qbytearray.h> |
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| 23 | #include <QtCore/qscopedpointer.h> |
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| 24 | #include <QtCore/qlist.h> |
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| 25 | |
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| 26 | QT_BEGIN_NAMESPACE |
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| 27 | |
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| 28 | class QMimeMagicRule |
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| 29 | { |
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| 30 | public: |
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| 31 | enum Type { Invalid = 0, String, Host16, Host32, Big16, Big32, Little16, Little32, Byte }; |
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| 32 | |
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| 33 | QMimeMagicRule(const QString &typeStr, const QByteArray &value, const QString &offsets, |
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| 34 | const QByteArray &mask, QString *errorString); |
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| 35 | |
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| 36 | void swap(QMimeMagicRule &other) noexcept |
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| 37 | { |
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| 38 | qSwap(value1&: m_type, value2&: other.m_type); |
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| 39 | qSwap(value1&: m_value, value2&: other.m_value); |
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| 40 | qSwap(value1&: m_startPos, value2&: other.m_startPos); |
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| 41 | qSwap(value1&: m_endPos, value2&: other.m_endPos); |
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| 42 | qSwap(value1&: m_mask, value2&: other.m_mask); |
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| 43 | qSwap(value1&: m_pattern, value2&: other.m_pattern); |
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| 44 | qSwap(value1&: m_number, value2&: other.m_number); |
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| 45 | qSwap(value1&: m_numberMask, value2&: other.m_numberMask); |
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| 46 | qSwap(value1&: m_matchFunction, value2&: other.m_matchFunction); |
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| 47 | } |
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| 48 | |
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| 49 | bool operator==(const QMimeMagicRule &other) const; |
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| 50 | |
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| 51 | Type type() const { return m_type; } |
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| 52 | QByteArray value() const { return m_value; } |
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| 53 | int startPos() const { return m_startPos; } |
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| 54 | int endPos() const { return m_endPos; } |
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| 55 | QByteArray mask() const; |
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| 56 | |
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| 57 | bool isValid() const { return m_matchFunction != nullptr; } |
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| 58 | |
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| 59 | bool matches(const QByteArray &data) const; |
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| 60 | |
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| 61 | QList<QMimeMagicRule> m_subMatches; |
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| 62 | |
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| 63 | static Type type(const QByteArray &type); |
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| 64 | static QByteArray typeName(Type type); |
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| 65 | |
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| 66 | static bool matchSubstring(const char *dataPtr, qsizetype dataSize, int rangeStart, |
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| 67 | int rangeLength, qsizetype valueLength, const char *valueData, |
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| 68 | const char *mask); |
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| 69 | |
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| 70 | private: |
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| 71 | Type m_type; |
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| 72 | QByteArray m_value; |
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| 73 | int m_startPos; |
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| 74 | int m_endPos; |
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| 75 | QByteArray m_mask; |
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| 76 | |
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| 77 | QByteArray m_pattern; |
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| 78 | quint32 m_number; |
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| 79 | quint32 m_numberMask; |
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| 80 | |
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| 81 | typedef bool (QMimeMagicRule::*MatchFunction)(const QByteArray &data) const; |
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| 82 | MatchFunction m_matchFunction; |
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| 83 | |
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| 84 | private: |
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| 85 | // match functions |
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| 86 | bool matchString(const QByteArray &data) const; |
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| 87 | template <typename T> |
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| 88 | bool matchNumber(const QByteArray &data) const; |
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| 89 | }; |
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| 90 | Q_DECLARE_SHARED(QMimeMagicRule) |
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| 91 | |
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| 92 | QT_END_NAMESPACE |
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| 93 | |
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| 94 | #endif // QMIMEMAGICRULE_H |
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| 95 | |
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