qbytearraymatcher.h

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00001 /****************************************************************************
00002 **
00003 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
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00006 **
00007 ** This file is part of the QtCore module of the Qt Toolkit.
00008 **
00009 ** $QT_BEGIN_LICENSE:LGPL$
00010 ** Commercial Usage
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00012 ** accordance with the Qt Commercial License Agreement provided with the
00013 ** Software or, alternatively, in accordance with the terms contained in
00014 ** a written agreement between you and Nokia.
00015 **
00016 ** GNU Lesser General Public License Usage
00017 ** Alternatively, this file may be used under the terms of the GNU Lesser
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00041 
00042 #ifndef QBYTEARRAYMATCHER_H
00043 #define QBYTEARRAYMATCHER_H
00044 
00045 #include <QtCore/qbytearray.h>
00046 
00047 QT_BEGIN_HEADER
00048 
00049 QT_BEGIN_NAMESPACE
00050 
00051 QT_MODULE(Core)
00052 
00053 class QByteArrayMatcherPrivate;
00054 
00055 class Q_CORE_EXPORT QByteArrayMatcher
00056 {
00057 public:
00058     QByteArrayMatcher();
00059     explicit QByteArrayMatcher(const QByteArray &pattern);
00060     explicit QByteArrayMatcher(const char *pattern, int length);
00061     QByteArrayMatcher(const QByteArrayMatcher &other);
00062     ~QByteArrayMatcher();
00063 
00064     QByteArrayMatcher &operator=(const QByteArrayMatcher &other);
00065 
00066     void setPattern(const QByteArray &pattern);
00067 
00068     int indexIn(const QByteArray &ba, int from = 0) const;
00069     int indexIn(const char *str, int len, int from = 0) const;
00070     inline QByteArray pattern() const
00071     {
00072         if (q_pattern.isNull())
00073             return QByteArray(reinterpret_cast<const char*>(p.p), p.l);
00074         return q_pattern;
00075     }
00076 
00077 private:
00078     QByteArrayMatcherPrivate *d;
00079     QByteArray q_pattern;
00080 #ifdef Q_CC_RVCT
00081 // explicitly allow anonymous unions for RVCT to prevent compiler warnings
00082 #  pragma push
00083 #  pragma anon_unions
00084 #endif
00085     struct Data {
00086         uchar q_skiptable[256];
00087         const uchar *p;
00088         int l;
00089     };
00090     union {
00091         uint dummy[256];
00092         Data p;
00093     };
00094 #ifdef Q_CC_RVCT
00095 #  pragma pop
00096 #endif
00097 };
00098 
00099 QT_END_NAMESPACE
00100 
00101 QT_END_HEADER
00102 
00103 #endif // QBYTEARRAYMATCHER_H