Qt 4.8
qbuffer.h
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41 
42 #ifndef QBUFFER_H
43 #define QBUFFER_H
44 
45 #include <QtCore/qiodevice.h>
46 #include <QtCore/qbytearray.h>
47 
49 
51 
52 QT_MODULE(Core)
53 
54 class QObject;
55 class QBufferPrivate;
56 
58 {
59 #ifndef QT_NO_QOBJECT
60  Q_OBJECT
61 #endif
62 
63 public:
64 #ifndef QT_NO_QOBJECT
65  explicit QBuffer(QObject *parent = 0);
66  QBuffer(QByteArray *buf, QObject *parent = 0);
67 #else
68  QBuffer();
69  explicit QBuffer(QByteArray *buf);
70 #endif
71  ~QBuffer();
72 
73  QByteArray &buffer();
74  const QByteArray &buffer() const;
75  void setBuffer(QByteArray *a);
76 
77  void setData(const QByteArray &data);
78  inline void setData(const char *data, int len);
79  const QByteArray &data() const;
80 
81  bool open(OpenMode openMode);
82 
83  void close();
84  qint64 size() const;
85  qint64 pos() const;
86  bool seek(qint64 off);
87  bool atEnd() const;
88  bool canReadLine() const;
89 
90 protected:
91 #ifndef QT_NO_QOBJECT
92  void connectNotify(const char*);
93  void disconnectNotify(const char*);
94 #endif
95  qint64 readData(char *data, qint64 maxlen);
96  qint64 writeData(const char *data, qint64 len);
97 
98 private:
101 
102  Q_PRIVATE_SLOT(d_func(), void _q_emitSignals())
103 };
104 
105 inline void QBuffer::setData(const char *adata, int alen)
106 { setData(QByteArray(adata, alen)); }
107 
109 
111 
112 #endif // QBUFFER_H
virtual qint64 size() const
For open random-access devices, this function returns the size of the device.
Definition: qiodevice.cpp:642
#define QT_END_NAMESPACE
This macro expands to.
Definition: qglobal.h:90
#define QT_MODULE(x)
Definition: qglobal.h:2783
virtual void close()
First emits aboutToClose(), then closes the device and sets its OpenMode to NotOpen.
Definition: qiodevice.cpp:590
#define QT_BEGIN_HEADER
Definition: qglobal.h:136
void setData(const QByteArray &data)
Sets the contents of the internal buffer to be data.
Definition: qbuffer.cpp:315
virtual qint64 writeData(const char *data, qint64 len)=0
Writes up to maxSize bytes from data to the device.
The QByteArray class provides an array of bytes.
Definition: qbytearray.h:135
virtual qint64 pos() const
For random-access devices, this function returns the position that data is written to or read from...
Definition: qiodevice.cpp:624
#define Q_DISABLE_COPY(Class)
Disables the use of copy constructors and assignment operators for the given Class.
Definition: qglobal.h:2523
#define Q_PRIVATE_SLOT(d, signature)
Definition: qobjectdefs.h:73
long ASN1_INTEGER_get ASN1_INTEGER * a
The QBuffer class provides a QIODevice interface for a QByteArray.
Definition: qbuffer.h:57
The QObject class is the base class of all Qt objects.
Definition: qobject.h:111
virtual void connectNotify(const char *signal)
This virtual function is called when something has been connected to signal in this object...
Definition: qobject.cpp:3142
virtual bool atEnd() const
Returns true if the current read and write position is at the end of the device (i.e.
Definition: qiodevice.cpp:711
#define QT_BEGIN_NAMESPACE
This macro expands to.
Definition: qglobal.h:89
static bool setData(const QByteArray &data, STGMEDIUM *pmedium)
Definition: qmime_win.cpp:141
static const char * data(const QByteArray &arr)
__int64 qint64
Definition: qglobal.h:942
#define Q_OBJECT
Definition: qobjectdefs.h:157
virtual qint64 readData(char *data, qint64 maxlen)=0
Reads up to maxSize bytes from the device into data, and returns the number of bytes read or -1 if an...
#define Q_CORE_EXPORT
Definition: qglobal.h:1449
virtual void disconnectNotify(const char *signal)
This virtual function is called when something has been disconnected from signal in this object...
Definition: qobject.cpp:3162
virtual bool open(OpenMode mode)
Opens the device and sets its OpenMode to mode.
Definition: qiodevice.cpp:570
#define Q_DECLARE_PRIVATE(Class)
Definition: qglobal.h:2467
virtual bool canReadLine() const
Returns true if a complete line of data can be read from the device; otherwise returns false...
Definition: qiodevice.cpp:1330
The QIODevice class is the base interface class of all I/O devices in Qt.
Definition: qiodevice.h:66
#define QT_END_HEADER
Definition: qglobal.h:137
virtual bool seek(qint64 pos)
For random-access devices, this function sets the current position to pos, returning true on success...
Definition: qiodevice.cpp:659