// Licence: wxWindows license
/////////////////////////////////////////////////////////////////////////////
-#ifndef __WXSTREAM_H__
-#define __WXSTREAM_H__
+#ifndef _WX_WXSTREAM_H__
+#define _WX_WXSTREAM_H__
#ifdef __GNUG__
#pragma interface
#endif
+#include "wx/defs.h"
+
+#if wxUSE_STREAMS
+
#include <stdio.h>
#include "wx/object.h"
#include "wx/string.h"
#include "wx/filefn.h" // for off_t, wxInvalidOffset and wxSeekMode
+class WXDLLEXPORT wxStreamBase;
class WXDLLEXPORT wxInputStream;
class WXDLLEXPORT wxOutputStream;
typedef wxInputStream& (*__wxInputManip)(wxInputStream&);
typedef wxOutputStream& (*__wxOutputManip)(wxOutputStream&);
-wxOutputStream& WXDLLEXPORT wxEndL(wxOutputStream& o_stream);
+WXDLLEXPORT wxOutputStream& wxEndL(wxOutputStream& o_stream);
-class WXDLLEXPORT wxStreamBuffer {
+// ---------------------------------------------------------------------------
+// wxStream: base classes
+// ---------------------------------------------------------------------------
+
+#define wxStream_NOERROR wxSTREAM_NOERROR
+#define wxStream_EOF wxSTREAM_EOF
+#define wxStream_WRITE_ERR wxSTREAM_WRITE_ERROR
+#define wxStream_READ_ERR wxSTREAM_READ_ERROR
+
+typedef enum {
+ wxStream_NOERROR = 0,
+ wxStream_EOF,
+ wxStream_WRITE_ERR,
+ wxStream_READ_ERR
+} wxStreamError;
+
+class WXDLLEXPORT wxStreamBase {
public:
- wxStreamBuffer(wxInputStream& stream);
- wxStreamBuffer(wxOutputStream& stream);
- ~wxStreamBuffer();
+ wxStreamBase();
+ virtual ~wxStreamBase();
- void Read(void *buffer, size_t size);
- void Write(const void *buffer, size_t size);
- void WriteBack(char c);
+ bool operator!() const { return (LastError() != wxSTREAM_NOERROR); }
+ wxStreamError LastError() const { return m_lasterror; }
+ virtual size_t GetSize() const { return ~((size_t)0); }
+ size_t StreamSize() const { return GetSize(); }
- void SetBufferIO(char *buffer_start, char *buffer_end);
- void SetBufferIO(size_t bufsize);
- void ResetBuffer();
-
- void SetBufferPosition(char *buffer_position)
- { m_buffer_pos = buffer_position; }
- void SetIntPosition(size_t pos)
- { m_buffer_pos = m_buffer_start + pos; }
- char *GetBufferPosition() const { return m_buffer_pos; }
- size_t GetIntPosition() const { return m_buffer_pos - m_buffer_start; }
-
- char *GetBufferStart() const { return m_buffer_start; }
- char *GetBufferEnd() const { return m_buffer_end; }
- size_t GetBufferSize() const { return m_buffer_size; }
- size_t GetLastAccess() const { return m_buffer_end - m_buffer_start; }
+ protected:
+
+ virtual size_t OnSysRead(void *buffer, size_t bufsize);
+ virtual size_t OnSysWrite(const void *buffer, size_t bufsize);
+ virtual off_t OnSysSeek(off_t seek, wxSeekMode mode);
+ virtual off_t OnSysTell() const;
protected:
- char *m_buffer_start, *m_buffer_end, *m_buffer_pos;
- size_t m_buffer_size;
+ friend class wxStreamBuffer;
- wxInputStream *m_istream;
- wxOutputStream *m_ostream;
+ size_t m_lastcount;
+ wxStreamError m_lasterror;
};
-/*
- * wxStream: base classes
- */
-class WXDLLEXPORT wxInputStream {
+class WXDLLEXPORT wxInputStream: public wxStreamBase {
public:
wxInputStream();
virtual ~wxInputStream();
// IO functions
- virtual char Peek() = 0;
- virtual char GetC();
+ virtual char Peek();
+ char GetC();
virtual wxInputStream& Read(void *buffer, size_t size);
wxInputStream& Read(wxOutputStream& stream_out);
// Position functions
- off_t SeekI(off_t pos, wxSeekMode mode = wxFromStart);
- off_t TellI() const;
+ virtual off_t SeekI(off_t pos, wxSeekMode mode = wxFromStart);
+ virtual off_t TellI() const;
// State functions
- bool Eof() const { return m_eof; }
- size_t LastRead() { return m_lastread; }
- wxStreamBuffer *InputStreamBuffer() { return m_i_streambuf; }
+ virtual size_t LastRead() { return wxStreamBase::m_lastcount; }
+
+ // Ungetch
+ size_t Ungetch(const void *buffer, size_t size);
+ bool Ungetch(char c);
// Operators
wxInputStream& operator>>(wxOutputStream& out) { return Read(out); }
- wxInputStream& operator>>(wxString& line);
- wxInputStream& operator>>(char& c);
- wxInputStream& operator>>(short& i);
- wxInputStream& operator>>(long& i);
- wxInputStream& operator>>(float& i);
+#if wxUSE_SERIAL
+ wxInputStream& operator>>(wxObject *& obj);
+#endif
wxInputStream& operator>>( __wxInputManip func) { return func(*this); }
protected:
- friend class wxStreamBuffer;
- friend class wxFilterInputStream;
+ // Ungetch managers
+ char *m_wback;
+ size_t m_wbacksize;
+ size_t m_wbackcur;
- wxInputStream(wxStreamBuffer *buffer);
+ char *AllocSpaceWBack(size_t needed_size);
+ size_t GetWBack(char *buf, size_t bsize);
- virtual size_t DoRead(void *buffer, size_t size) = 0;
- virtual off_t DoSeekInput(off_t pos, wxSeekMode mode) = 0;
- virtual off_t DoTellInput() const = 0;
-
- protected:
- bool m_eof, m_i_destroybuf;
- size_t m_lastread;
- wxStreamBuffer *m_i_streambuf;
};
-class WXDLLEXPORT wxOutputStream {
+class WXDLLEXPORT wxOutputStream: public wxStreamBase {
public:
wxOutputStream();
virtual ~wxOutputStream();
virtual off_t SeekO(off_t pos, wxSeekMode mode = wxFromStart);
virtual off_t TellO() const;
- virtual bool Bad() const { return m_bad; }
- virtual size_t LastWrite() const { return m_lastwrite; }
- wxStreamBuffer *OutputStreamBuffer() { return m_o_streambuf; }
+ virtual size_t LastWrite() const { return wxStreamBase::m_lastcount; }
virtual void Sync();
wxOutputStream& operator<<(wxInputStream& out) { return Write(out); }
- wxOutputStream& operator<<(const char *string);
- wxOutputStream& operator<<(wxString& string);
- wxOutputStream& operator<<(char c);
- wxOutputStream& operator<<(short i);
- wxOutputStream& operator<<(int i);
- wxOutputStream& operator<<(long i);
- wxOutputStream& operator<<(double f);
-
- wxOutputStream& operator<<(float f) { return operator<<((double)f); }
- wxOutputStream& operator<<(unsigned char c) { return operator<<((char)c); }
- wxOutputStream& operator<<(unsigned short i) { return operator<<((short)i); }
- wxOutputStream& operator<<(unsigned int i) { return operator<<((int)i); }
- wxOutputStream& operator<<(unsigned long i) { return operator<<((long)i); }
-
+#if wxUSE_SERIAL
+ wxOutputStream& operator<<(wxObject& obj);
+#endif
wxOutputStream& operator<<( __wxOutputManip func) { return func(*this); }
+};
- protected:
- friend class wxStreamBuffer;
- friend class wxFilterOutputStream;
+// ---------------------------------------------------------------------------
+// A stream for measuring streamed output
+// ---------------------------------------------------------------------------
- wxOutputStream(wxStreamBuffer *buffer);
+class wxCountingOutputStream: public wxOutputStream {
+ public:
+ wxCountingOutputStream();
- virtual size_t DoWrite(const void *buffer, size_t size) = 0;
- virtual off_t DoSeekOutput(off_t pos, wxSeekMode mode) = 0;
- virtual off_t DoTellOutput() const = 0;
+ size_t GetSize() const;
+ bool Ok() const { return TRUE; }
protected:
- bool m_bad, m_o_destroybuf;
- size_t m_lastwrite;
- wxStreamBuffer *m_o_streambuf;
+
+ size_t OnSysWrite(const void *buffer, size_t size);
+ off_t OnSysSeek(off_t pos, wxSeekMode mode);
+ off_t OnSysTell() const;
+
+ protected:
+ size_t m_currentPos;
};
-/*
- * "Filter" streams
- */
+
+// ---------------------------------------------------------------------------
+// "Filter" streams
+// ---------------------------------------------------------------------------
class WXDLLEXPORT wxFilterInputStream: public wxInputStream {
public:
+ wxFilterInputStream();
wxFilterInputStream(wxInputStream& stream);
- virtual ~wxFilterInputStream();
-
- virtual char Peek() { return m_parent_i_stream->Peek(); }
+ ~wxFilterInputStream();
- virtual bool Eof() const { return m_parent_i_stream->Eof(); }
- virtual size_t LastRead() const { return m_parent_i_stream->LastRead(); }
+ char Peek() { return m_parent_i_stream->Peek(); }
- protected:
- virtual size_t DoRead(void *buffer, size_t size);
- virtual off_t DoSeekInput(off_t pos, wxSeekMode mode);
- virtual off_t DoTellInput() const;
+ size_t GetSize() const { return m_parent_i_stream->GetSize(); }
protected:
wxInputStream *m_parent_i_stream;
class WXDLLEXPORT wxFilterOutputStream: public wxOutputStream {
public:
+ wxFilterOutputStream();
wxFilterOutputStream(wxOutputStream& stream);
- virtual ~wxFilterOutputStream();
+ ~wxFilterOutputStream();
+
+ size_t GetSize() const { return m_parent_o_stream->GetSize(); }
+
+ protected:
+ wxOutputStream *m_parent_o_stream;
+};
+
+// ---------------------------------------------------------------------------
+// Stream buffer
+// ---------------------------------------------------------------------------
+
+class WXDLLEXPORT wxStreamBuffer {
+ public:
+ typedef enum {
+ read = 0, write, read_write
+ } BufMode;
+
+ // -----------
+ // ctor & dtor
+ // -----------
+ wxStreamBuffer(wxStreamBase& stream, BufMode mode);
+ wxStreamBuffer(BufMode mode);
+ wxStreamBuffer(const wxStreamBuffer& buf);
+ ~wxStreamBuffer();
+
+ // -----------
+ // Filtered IO
+ // -----------
+ size_t Read(void *buffer, size_t size);
+ size_t Read(wxStreamBuffer *buf);
+ 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);
+
+ // --------------
+ // Buffer control
+ // --------------
+ void ResetBuffer();
+ void SetBufferIO(char *buffer_start, char *buffer_end);
+ void SetBufferIO(size_t bufsize);
+ char *GetBufferStart() const { return m_buffer_start; }
+ char *GetBufferEnd() const { return m_buffer_end; }
+ char *GetBufferPos() const { return m_buffer_pos; }
+ off_t GetIntPosition() const { return m_buffer_pos-m_buffer_start; }
+ void SetIntPosition(off_t pos) { m_buffer_pos = m_buffer_start+pos; }
+ size_t GetLastAccess() const { return m_buffer_end-m_buffer_start; }
+
+ void Fixed(bool fixed) { m_fixed = fixed; }
+ void Flushable(bool f) { m_flushable = f; }
+
+ bool FlushBuffer();
+ bool FillBuffer();
+ size_t GetDataLeft();
+
+ // --------------
+ // Administration
+ // --------------
+ wxStreamBase *Stream() { return m_stream; }
+
+ protected:
+ void GetFromBuffer(void *buffer, size_t size);
+ void PutToBuffer(const void *buffer, size_t size);
+
+ protected:
+ char *m_buffer_start, *m_buffer_end, *m_buffer_pos;
+ size_t m_buffer_size;
+
+ char *m_wback;
+ size_t m_wbacksize, m_wbackcur;
+
+ bool m_fixed, m_flushable;
+
+ wxStreamBase *m_stream;
+ BufMode m_mode;
+ bool m_destroybuf, m_destroystream;
+};
+
+// ---------------------------------------------------------------------------
+// wxBufferedStreams
+// ---------------------------------------------------------------------------
+
+class wxBufferedInputStream: public wxFilterInputStream {
+ public:
+ wxBufferedInputStream(wxInputStream& stream);
+ ~wxBufferedInputStream();
+
+ char Peek();
+ wxInputStream& Read(void *buffer, size_t size);
+
+ // Position functions
+ off_t SeekI(off_t pos, wxSeekMode mode = wxFromStart);
+ off_t TellI() const;
- virtual bool Bad() const { return m_parent_o_stream->Bad(); }
- virtual size_t LastWrite() const { return m_parent_o_stream->LastWrite(); }
+ 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;
- // The forward is implicitely done by wxStreamBuffer.
+ protected:
+ wxStreamBuffer *m_i_streambuf;
+};
- virtual size_t DoWrite(const void *buffer, size_t size);
- virtual off_t DoSeekOutput(off_t pos, wxSeekMode mode);
- virtual off_t DoTellOutput() const;
+class wxBufferedOutputStream: public wxFilterOutputStream {
+ public:
+ wxBufferedOutputStream(wxOutputStream& stream);
+ ~wxBufferedOutputStream();
+
+ wxOutputStream& Write(const void *buffer, size_t size);
+
+ // Position functions
+ off_t SeekO(off_t pos, wxSeekMode mode = wxFromStart);
+ off_t TellO() const;
+
+ void Sync();
+
+ wxStreamBuffer *OutputStreamBuffer() const { return m_o_streambuf; }
protected:
- wxOutputStream *m_parent_o_stream;
+ size_t OnSysWrite(const void *buffer, size_t bufsize);
+ off_t OnSysSeek(off_t seek, wxSeekMode mode);
+ off_t OnSysTell() const;
+
+ protected:
+ wxStreamBuffer *m_o_streambuf;
};
#endif
+ // wxUSE_STREAMS
+
+#endif
+ // _WX_WXSTREAM_H__
projects / wxWidgets.git / blobdiff