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# qbuffer.h

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    00001 /****************************************************************************
    00002 **
    00003 ** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
    00004 ** All rights reserved.
    00005 ** Contact: Nokia Corporation (qt-info@nokia.com)
    00006 **
    00007 ** This file is part of the QtCore module of the Qt Toolkit.
    00008 **
    00009 ** $QT_BEGIN_LICENSE:LGPL$
    00010 ** Commercial Usage
    00011 ** Licensees holding valid Qt Commercial licenses may use this file in
    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
    00018 ** General Public License version 2.1 as published by the Free Software
    00019 ** Foundation and appearing in the file LICENSE.LGPL included in the
    00020 ** packaging of this file.  Please review the following information to
    00021 ** ensure the GNU Lesser General Public License version 2.1 requirements
    00022 ** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
    00023 **
    00024 ** In addition, as a special exception, Nokia gives you certain additional
    00025 ** rights.  These rights are described in the Nokia Qt LGPL Exception
    00026 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this module.
    00027 **
    00028 ** GNU General Public License Usage
    00029 ** Alternatively, this file may be used under the terms of the GNU
    00030 ** General Public License version 3.0 as published by the Free Software
    00031 ** Foundation and appearing in the file LICENSE.GPL included in the
    00032 ** packaging of this file.  Please review the following information to
    00033 ** ensure the GNU General Public License version 3.0 requirements will be
    00034 ** met: http://www.gnu.org/copyleft/gpl.html.
    00035 **
    00036 ** If you have questions regarding the use of this file, please contact
    00037 ** Nokia at qt-info@nokia.com.
    00038 ** $QT_END_LICENSE$
    00039 **
    00040 ****************************************************************************/
    00041
    00042 #ifndef QBUFFER_H
    00043 #define QBUFFER_H
    00044
    00045 #include <QtCore/qiodevice.h>
    00046 #include <QtCore/qbytearray.h>
    00047
    00048 QT_BEGIN_HEADER
    00049
    00050 QT_BEGIN_NAMESPACE
    00051
    00052 QT_MODULE(Core)
    00053
    00054 class QObject;
    00055 class QBufferPrivate;
    00056
    00057 class Q_CORE_EXPORT QBuffer : public QIODevice
    00058 {
    00059 #ifndef QT_NO_QOBJECT
    00060     Q_OBJECT
    00061 #endif
    00062
    00063 public:
    00064 #ifndef QT_NO_QOBJECT
    00065      explicit QBuffer(QObject *parent = 0);
    00066      QBuffer(QByteArray *buf, QObject *parent = 0);
    00067 #else
    00068      QBuffer();
    00069      explicit QBuffer(QByteArray *buf);
    00070 #endif
    00071     ~QBuffer();
    00072
    00073     QByteArray &buffer();
    00074     const QByteArray &buffer() const;
    00075     void setBuffer(QByteArray *a);
    00076
    00077     void setData(const QByteArray &data);
    00078     inline void setData(const char *data, int len);
    00079     const QByteArray &data() const;
    00080
    00081     bool open(OpenMode openMode);
    00082
    00083     void close();
    00084     qint64 size() const;
    00085     qint64 pos() const;
    00086     bool seek(qint64 off);
    00087     bool atEnd() const;
    00088     bool canReadLine() const;
    00089
    00090 protected:
    00091 #ifndef QT_NO_QOBJECT
    00092     void connectNotify(const char*);
    00093     void disconnectNotify(const char*);
    00094 #endif
    00095     qint64 readData(char *data, qint64 maxlen);
    00096     qint64 writeData(const char *data, qint64 len);
    00097
    00098 private:
    00099     Q_DECLARE_PRIVATE(QBuffer)
    00100     Q_DISABLE_COPY(QBuffer)
    00101
    00102     Q_PRIVATE_SLOT(d_func(), void _q_emitSignals())
    00103 };
    00104
    00105 inline void QBuffer::setData(const char *adata, int alen)
    00106 { setData(QByteArray(adata, alen)); }
    00107
    00108 QT_END_NAMESPACE
    00109
    00110 QT_END_HEADER
    00111
    00112 #endif // QBUFFER_H