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tqtinterface/qtinterface/qt4/Qt/qdatastream.h

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/****************************************************************************
**
** Copyright (C) 2010 Nokia Corporation and/or its subsidiary(-ies).
** All rights reserved.
** Contact: Nokia Corporation (qt-info@nokia.com)
**
** This file is part of the QtCore module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL$
** Commercial Usage
** Licensees holding valid Qt Commercial licenses may use this file in
** accordance with the Qt Commercial License Agreement provided with the
** Software or, alternatively, in accordance with the terms contained in
** a written agreement between you and Nokia.
**
** GNU Lesser General Public License Usage
** Alternatively, this file may be used under the terms of the GNU Lesser
** General Public License version 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Nokia gives you certain additional
** rights. These rights are described in the Nokia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
** If you have questions regarding the use of this file, please contact
** Nokia at qt-info@nokia.com.
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QDATASTREAM_H
#define QDATASTREAM_H
#include <QtCore/qscopedpointer.h>
#include <QtCore/qiodevice.h>
#include <QtCore/qglobal.h>
#ifdef Status
#error qdatastream.h must be included before any header file that defines Status
#endif
QT_BEGIN_HEADER
QT_BEGIN_NAMESPACE
QT_MODULE(Core)
class QByteArray;
class QIODevice;
template <typename T> class QList;
template <typename T> class QLinkedList;
template <typename T> class QVector;
template <typename T> class QSet;
template <class Key, class T> class QHash;
template <class Key, class T> class QMap;
#if !defined(QT_NO_DATASTREAM) || defined(QT_BOOTSTRAPPED)
class QDataStreamPrivate;
class Q_CORE_EXPORT QDataStream
{
public:
enum Version {
Qt_1_0 = 1,
Qt_2_0 = 2,
Qt_2_1 = 3,
Qt_3_0 = 4,
Qt_3_1 = 5,
Qt_3_3 = 6,
Qt_4_0 = 7,
Qt_4_1 = Qt_4_0,
Qt_4_2 = 8,
Qt_4_3 = 9,
Qt_4_4 = 10,
Qt_4_5 = 11,
Qt_4_6 = 12
#if QT_VERSION >= 0x040700
#error Add the datastream version for this Qt version
Qt_4_7 = Qt_4_6
#endif
};
enum ByteOrder {
BigEndian = QSysInfo::BigEndian,
LittleEndian = QSysInfo::LittleEndian
};
enum Status {
Ok,
ReadPastEnd,
ReadCorruptData
};
enum FloatingPointPrecision {
SinglePrecision,
DoublePrecision
};
QDataStream();
explicit QDataStream(QIODevice *);
#ifdef QT3_SUPPORT
QDataStream(QByteArray *, int mode);
#endif
QDataStream(QByteArray *, QIODevice::OpenMode flags);
QDataStream(const QByteArray &);
virtual ~QDataStream();
QIODevice *device() const;
void setDevice(QIODevice *);
void unsetDevice();
bool atEnd() const;
#ifdef QT3_SUPPORT
inline QT3_SUPPORT bool eof() const { return atEnd(); }
#endif
Status status() const;
void setStatus(Status status);
void resetStatus();
FloatingPointPrecision floatingPointPrecision() const;
void setFloatingPointPrecision(FloatingPointPrecision precision);
ByteOrder byteOrder() const;
void setByteOrder(ByteOrder);
int version() const;
void setVersion(int);
QDataStream &operator>>(qint8 &i);
QDataStream &operator>>(quint8 &i);
QDataStream &operator>>(qint16 &i);
QDataStream &operator>>(quint16 &i);
QDataStream &operator>>(qint32 &i);
QDataStream &operator>>(quint32 &i);
QDataStream &operator>>(qint64 &i);
QDataStream &operator>>(quint64 &i);
QDataStream &operator>>(bool &i);
QDataStream &operator>>(float &f);
QDataStream &operator>>(double &f);
QDataStream &operator>>(char *&str);
QDataStream &operator<<(qint8 i);
QDataStream &operator<<(quint8 i);
QDataStream &operator<<(qint16 i);
QDataStream &operator<<(quint16 i);
QDataStream &operator<<(qint32 i);
QDataStream &operator<<(quint32 i);
QDataStream &operator<<(qint64 i);
QDataStream &operator<<(quint64 i);
QDataStream &operator<<(bool i);
QDataStream &operator<<(float f);
QDataStream &operator<<(double f);
QDataStream &operator<<(const char *str);
QDataStream &readBytes(char *&, uint &len);
int readRawData(char *, int len);
QDataStream &writeBytes(const char *, uint len);
int writeRawData(const char *, int len);
int skipRawData(int len);
#ifdef QT3_SUPPORT
inline QT3_SUPPORT QDataStream &readRawBytes(char *str, uint len)
{ readRawData(str, static_cast<int>(len)); return *this; }
inline QT3_SUPPORT QDataStream &writeRawBytes(const char *str, uint len)
{ writeRawData(str, static_cast<int>(len)); return *this; }
inline QT3_SUPPORT bool isPrintableData() const { return false; }
inline QT3_SUPPORT void setPrintableData(bool) {}
#endif
private:
Q_DISABLE_COPY(QDataStream)
QScopedPointer<QDataStreamPrivate> d;
QIODevice *dev;
bool owndev;
bool noswap;
ByteOrder byteorder;
int ver;
Status q_status;
};
/*****************************************************************************
QDataStream inline functions
*****************************************************************************/
inline QIODevice *QDataStream::device() const
{ return dev; }
inline QDataStream::ByteOrder QDataStream::byteOrder() const
{ return byteorder; }
inline int QDataStream::version() const
{ return ver; }
inline void QDataStream::setVersion(int v)
{ ver = v; }
inline QDataStream &QDataStream::operator>>(quint8 &i)
{ return *this >> reinterpret_cast<qint8&>(i); }
inline QDataStream &QDataStream::operator>>(quint16 &i)
{ return *this >> reinterpret_cast<qint16&>(i); }
inline QDataStream &QDataStream::operator>>(quint32 &i)
{ return *this >> reinterpret_cast<qint32&>(i); }
inline QDataStream &QDataStream::operator>>(quint64 &i)
{ return *this >> reinterpret_cast<qint64&>(i); }
inline QDataStream &QDataStream::operator<<(quint8 i)
{ return *this << qint8(i); }
inline QDataStream &QDataStream::operator<<(quint16 i)
{ return *this << qint16(i); }
inline QDataStream &QDataStream::operator<<(quint32 i)
{ return *this << qint32(i); }
inline QDataStream &QDataStream::operator<<(quint64 i)
{ return *this << qint64(i); }
template <typename T>
QDataStream& operator>>(QDataStream& s, QList<T>& l)
{
l.clear();
quint32 c;
s >> c;
for(quint32 i = 0; i < c; ++i)
{
T t;
s >> t;
l.append(t);
if (s.atEnd())
break;
}
return s;
}
template <typename T>
QDataStream& operator<<(QDataStream& s, const QList<T>& l)
{
s << quint32(l.size());
for (int i = 0; i < l.size(); ++i)
s << l.at(i);
return s;
}
template <typename T>
QDataStream& operator>>(QDataStream& s, QLinkedList<T>& l)
{
l.clear();
quint32 c;
s >> c;
for(quint32 i = 0; i < c; ++i)
{
T t;
s >> t;
l.append(t);
if (s.atEnd())
break;
}
return s;
}
template <typename T>
QDataStream& operator<<(QDataStream& s, const QLinkedList<T>& l)
{
s << quint32(l.size());
typename QLinkedList<T>::ConstIterator it = l.constBegin();
for(; it != l.constEnd(); ++it)
s << *it;
return s;
}
template<typename T>
QDataStream& operator>>(QDataStream& s, QVector<T>& v)
{
v.clear();
quint32 c;
s >> c;
v.resize(c);
for(quint32 i = 0; i < c; ++i) {
T t;
s >> t;
v[i] = t;
}
return s;
}
template<typename T>
QDataStream& operator<<(QDataStream& s, const QVector<T>& v)
{
s << quint32(v.size());
for (typename QVector<T>::const_iterator it = v.begin(); it != v.end(); ++it)
s << *it;
return s;
}
template <typename T>
QDataStream &operator>>(QDataStream &in, QSet<T> &set)
{
set.clear();
quint32 c;
in >> c;
for (quint32 i = 0; i < c; ++i) {
T t;
in >> t;
set << t;
if (in.atEnd())
break;
}
return in;
}
template <typename T>
QDataStream& operator<<(QDataStream &out, const QSet<T> &set)
{
out << quint32(set.size());
typename QSet<T>::const_iterator i = set.constBegin();
while (i != set.constEnd()) {
out << *i;
++i;
}
return out;
}
template <class Key, class T>
Q_OUTOFLINE_TEMPLATE QDataStream &operator>>(QDataStream &in, QHash<Key, T> &hash)
{
QDataStream::Status oldStatus = in.status();
in.resetStatus();
hash.clear();
quint32 n;
in >> n;
for (quint32 i = 0; i < n; ++i) {
if (in.status() != QDataStream::Ok)
break;
Key k;
T t;
in >> k >> t;
hash.insertMulti(k, t);
}
if (in.status() != QDataStream::Ok)
hash.clear();
if (oldStatus != QDataStream::Ok)
in.setStatus(oldStatus);
return in;
}
template <class Key, class T>
Q_OUTOFLINE_TEMPLATE QDataStream &operator<<(QDataStream &out, const QHash<Key, T>& hash)
{
out << quint32(hash.size());
typename QHash<Key, T>::ConstIterator it = hash.end();
typename QHash<Key, T>::ConstIterator begin = hash.begin();
while (it != begin) {
--it;
out << it.key() << it.value();
}
return out;
}
#ifdef qdoc
template <class Key, class T>
Q_OUTOFLINE_TEMPLATE QDataStream &operator>>(QDataStream &in, QMap<Key, T> &map)
#else
template <class aKey, class aT>
Q_OUTOFLINE_TEMPLATE QDataStream &operator>>(QDataStream &in, QMap<aKey, aT> &map)
#endif
{
QDataStream::Status oldStatus = in.status();
in.resetStatus();
map.clear();
quint32 n;
in >> n;
map.detach();
map.setInsertInOrder(true);
for (quint32 i = 0; i < n; ++i) {
if (in.status() != QDataStream::Ok)
break;
aKey key;
aT value;
in >> key >> value;
map.insertMulti(key, value);
}
map.setInsertInOrder(false);
if (in.status() != QDataStream::Ok)
map.clear();
if (oldStatus != QDataStream::Ok)
in.setStatus(oldStatus);
return in;
}
template <class Key, class T>
Q_OUTOFLINE_TEMPLATE QDataStream &operator<<(QDataStream &out, const QMap<Key, T> &map)
{
out << quint32(map.size());
typename QMap<Key, T>::ConstIterator it = map.end();
typename QMap<Key, T>::ConstIterator begin = map.begin();
while (it != begin) {
--it;
out << it.key() << it.value();
}
return out;
}
#endif // QT_NO_DATASTREAM
QT_END_NAMESPACE
QT_END_HEADER
#endif // QDATASTREAM_H