enum wxStreamError
{
- wxSTREAM_NO_ERROR = 0,
- wxSTREAM_NO_ERR = wxSTREAM_NO_ERROR,
- wxSTREAM_NOERROR = wxSTREAM_NO_ERROR,
+ wxSTREAM_NO_ERROR = 0,
+ wxSTREAM_NO_ERR = wxSTREAM_NO_ERROR,
+ wxSTREAM_NOERROR = wxSTREAM_NO_ERROR,
- wxSTREAM_EOF,
+ wxSTREAM_EOF,
- wxSTREAM_WRITE_ERROR,
- wxSTREAM_WRITE_ERR = wxSTREAM_WRITE_ERROR,
+ wxSTREAM_WRITE_ERROR,
+ wxSTREAM_WRITE_ERR = wxSTREAM_WRITE_ERROR,
- wxSTREAM_READ_ERROR,
- wxSTREAM_READ_ERR = wxSTREAM_READ_ERROR
+ wxSTREAM_READ_ERROR,
+ wxSTREAM_READ_ERR = wxSTREAM_READ_ERROR
};
// compatibility
virtual ~wxStreamBase();
// error testing
- wxStreamError LastError() const { return m_lasterror; }
wxStreamError GetLastError() const { return m_lasterror; }
bool IsOk() const { return LastError() == wxSTREAM_NOERROR; }
bool operator!() const { return LastError() != wxSTREAM_NOERROR; }
- virtual size_t GetSize() const { return ~((size_t)0); }
+ virtual size_t GetSize() const { return 0; }
+
+ // deprecated, for compatibility only
+ wxStreamError LastError() const { return m_lasterror; }
size_t StreamSize() const { return GetSize(); }
protected:
+ // VZ: these functions are really pure virtual and shouldn't be declared
+ // in the base class because it creates ambiguties in stream classes
+ // deriving from both wxInputStream and wxOutputStream
+#if 0
virtual size_t OnSysRead(void *buffer, size_t bufsize);
virtual size_t OnSysWrite(const void *buffer, size_t bufsize);
+#endif
+
virtual off_t OnSysSeek(off_t seek, wxSeekMode mode);
virtual off_t OnSysTell() const;
wxStreamError m_lasterror;
};
-class WXDLLEXPORT wxInputStream: public wxStreamBase
+class WXDLLEXPORT wxInputStream : /* virtual */ public wxStreamBase
{
public:
wxInputStream();
// Operators
wxInputStream& operator>>(wxOutputStream& out) { return Read(out); }
-#if wxUSE_SERIAL
- wxInputStream& operator>>(wxObject *& obj);
-#endif
wxInputStream& operator>>( __wxInputManip func) { return func(*this); }
protected:
+ // to be implemented in the derived classes (it should have been pure
+ // virtual)
+ virtual size_t OnSysRead(void *buffer, size_t bufsize);
+
// Ungetch managers
char *m_wback;
size_t m_wbacksize;
char *AllocSpaceWBack(size_t needed_size);
size_t GetWBack(void *buf, size_t bsize);
+
+ friend class wxStreamBuffer;
};
-class WXDLLEXPORT wxOutputStream: public wxStreamBase
+class WXDLLEXPORT wxOutputStream : /* virtual */ public wxStreamBase
{
public:
wxOutputStream();
virtual void Sync();
wxOutputStream& operator<<(wxInputStream& out) { return Write(out); }
-#if wxUSE_SERIAL
- wxOutputStream& operator<<(wxObject& obj);
-#endif
wxOutputStream& operator<<( __wxOutputManip func) { return func(*this); }
+
+protected:
+ // to be implemented in the derived classes (it should have been pure
+ // virtual)
+ virtual size_t OnSysWrite(const void *buffer, size_t bufsize);
+
+ friend class wxStreamBuffer;
};
// ---------------------------------------------------------------------------
// A stream for measuring streamed output
// ---------------------------------------------------------------------------
-class WXDLLEXPORT wxCountingOutputStream: public wxOutputStream
+class WXDLLEXPORT wxCountingOutputStream : public wxOutputStream
{
public:
wxCountingOutputStream();
bool Ok() const { return TRUE; }
protected:
- size_t OnSysWrite(const void *buffer, size_t size);
- off_t OnSysSeek(off_t pos, wxSeekMode mode);
- off_t OnSysTell() const;
+ virtual size_t OnSysWrite(const void *buffer, size_t size);
+ virtual off_t OnSysSeek(off_t pos, wxSeekMode mode);
+ virtual off_t OnSysTell() const;
size_t m_currentPos;
};
// "Filter" streams
// ---------------------------------------------------------------------------
-class WXDLLEXPORT wxFilterInputStream: public wxInputStream
+class WXDLLEXPORT wxFilterInputStream : public wxInputStream
{
public:
wxFilterInputStream();
wxFilterInputStream(wxInputStream& stream);
- ~wxFilterInputStream();
+ virtual ~wxFilterInputStream();
char Peek() { return m_parent_i_stream->Peek(); }
size_t GetSize() const { return m_parent_i_stream->GetSize(); }
+ wxInputStream *GetFilterInputStream() const { return m_parent_i_stream; }
+
protected:
wxInputStream *m_parent_i_stream;
};
-class WXDLLEXPORT wxFilterOutputStream: public wxOutputStream
+class WXDLLEXPORT wxFilterOutputStream : public wxOutputStream
{
public:
wxFilterOutputStream();
wxFilterOutputStream(wxOutputStream& stream);
- ~wxFilterOutputStream();
+ virtual ~wxFilterOutputStream();
size_t GetSize() const { return m_parent_o_stream->GetSize(); }
+ wxOutputStream *GetFilterOutputStream() const { return m_parent_o_stream; }
+
protected:
wxOutputStream *m_parent_o_stream;
};
// ---------------------------------------------------------------------------
-// Stream buffer
+// Stream buffer: this class can be derived from and passed to
+// wxBufferedStreams to implement custom buffering
// ---------------------------------------------------------------------------
class WXDLLEXPORT wxStreamBuffer
wxStreamBuffer(wxStreamBase& stream, BufMode mode);
wxStreamBuffer(BufMode mode);
wxStreamBuffer(const wxStreamBuffer& buf);
- ~wxStreamBuffer();
+ virtual ~wxStreamBuffer();
// Filtered IO
- size_t Read(void *buffer, size_t size);
+ virtual size_t Read(void *buffer, size_t size);
size_t Read(wxStreamBuffer *buf);
- size_t Write(const void *buffer, size_t size);
+ virtual size_t Write(const void *buffer, size_t size);
size_t Write(wxStreamBuffer *buf);
- char Peek();
- char GetChar();
- void PutChar(char c);
- off_t Tell() const;
- off_t Seek(off_t pos, wxSeekMode mode);
+ virtual char Peek();
+ virtual char GetChar();
+ virtual void PutChar(char c);
+ virtual off_t Tell() const;
+ virtual off_t Seek(off_t pos, wxSeekMode mode);
// Buffer control
void ResetBuffer();
bool IsFixed() const { return m_fixed; }
bool IsFlushable() const { return m_flushable; }
+ // only for input/output buffers respectively, returns NULL otherwise
+ wxInputStream *GetInputStream() const;
+ wxOutputStream *GetOutputStream() const;
+
// deprecated, for compatibility only
wxStreamBase *Stream() { return m_stream; }
// wxBufferedStreams
// ---------------------------------------------------------------------------
-class WXDLLEXPORT wxBufferedInputStream: public wxFilterInputStream
+class WXDLLEXPORT wxBufferedInputStream : public wxFilterInputStream
{
public:
- wxBufferedInputStream(wxInputStream& stream);
- ~wxBufferedInputStream();
+ // if a non NULL buffer is given to the stream, it will be deleted by it
+ wxBufferedInputStream(wxInputStream& stream,
+ wxStreamBuffer *buffer = NULL);
+ virtual ~wxBufferedInputStream();
char Peek();
wxInputStream& Read(void *buffer, size_t size);
off_t SeekI(off_t pos, wxSeekMode mode = wxFromStart);
off_t TellI() const;
+ // the buffer given to the stream will be deleted by it
+ void SetInputStreamBuffer(wxStreamBuffer *buffer);
+ wxStreamBuffer *GetInputStreamBuffer() const { return m_i_streambuf; }
+
+ // deprecated, for compatibility only
wxStreamBuffer *InputStreamBuffer() const { return m_i_streambuf; }
protected:
- size_t OnSysRead(void *buffer, size_t bufsize);
- off_t OnSysSeek(off_t seek, wxSeekMode mode);
- off_t OnSysTell() const;
+ virtual size_t OnSysRead(void *buffer, size_t bufsize);
+ virtual off_t OnSysSeek(off_t seek, wxSeekMode mode);
+ virtual off_t OnSysTell() const;
wxStreamBuffer *m_i_streambuf;
};
-class WXDLLEXPORT wxBufferedOutputStream: public wxFilterOutputStream
+class WXDLLEXPORT wxBufferedOutputStream : public wxFilterOutputStream
{
public:
- wxBufferedOutputStream(wxOutputStream& stream);
- ~wxBufferedOutputStream();
+ // if a non NULL buffer is given to the stream, it will be deleted by it
+ wxBufferedOutputStream(wxOutputStream& stream,
+ wxStreamBuffer *buffer = NULL);
+ virtual ~wxBufferedOutputStream();
wxOutputStream& Write(const void *buffer, size_t size);
size_t GetSize() const;
+ // the buffer given to the stream will be deleted by it
+ void SetOutputStreamBuffer(wxStreamBuffer *buffer);
+ wxStreamBuffer *GetOutputStreamBuffer() const { return m_o_streambuf; }
+
+ // deprecated, for compatibility only
wxStreamBuffer *OutputStreamBuffer() const { return m_o_streambuf; }
protected:
- size_t OnSysWrite(const void *buffer, size_t bufsize);
- off_t OnSysSeek(off_t seek, wxSeekMode mode);
- off_t OnSysTell() const;
+ virtual size_t OnSysWrite(const void *buffer, size_t bufsize);
+ virtual off_t OnSysSeek(off_t seek, wxSeekMode mode);
+ virtual off_t OnSysTell() const;
wxStreamBuffer *m_o_streambuf;
};
-#endif
- // wxUSE_STREAMS
+#endif // wxUSE_STREAMS
+
+#endif // _WX_WXSTREAM_H__
-#endif
- // _WX_WXSTREAM_H__
projects / wxWidgets.git / blobdiff