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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 | |
72 | void swap(QMimeMagicRule &other) noexcept |
73 | { |
74 | qSwap(value1&: m_type, value2&: other.m_type); |
75 | qSwap(value1&: m_value, value2&: other.m_value); |
76 | qSwap(value1&: m_startPos, value2&: other.m_startPos); |
77 | qSwap(value1&: m_endPos, value2&: other.m_endPos); |
78 | qSwap(value1&: m_mask, value2&: other.m_mask); |
79 | qSwap(value1&: m_pattern, value2&: other.m_pattern); |
80 | qSwap(value1&: m_number, value2&: other.m_number); |
81 | qSwap(value1&: m_numberMask, value2&: other.m_numberMask); |
82 | qSwap(value1&: m_matchFunction, value2&: other.m_matchFunction); |
83 | } |
84 | |
85 | bool operator==(const QMimeMagicRule &other) const; |
86 | |
87 | Type type() const { return m_type; } |
88 | QByteArray value() const { return m_value; } |
89 | int startPos() const { return m_startPos; } |
90 | int endPos() const { return m_endPos; } |
91 | QByteArray mask() const; |
92 | |
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 | |