c740f49634
* added support for DLL on Borland32 * fixed export bugs * fixed a portability problem in socket.cpp * added a missing function in utilsexc.cpp git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@715 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
248 lines
7.7 KiB
C++
248 lines
7.7 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: stream.h
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// Purpose: "wxWindows stream" base classes
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// Author: Guilhem Lavaux
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// Modified by:
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// Created: 11/07/98
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// RCS-ID: $Id$
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// Copyright: (c) Guilhem Lavaux
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// Licence: wxWindows license
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_WXSTREAM_H__
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#define _WX_WXSTREAM_H__
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#ifdef __GNUG__
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#pragma interface
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#endif
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#include <stdio.h>
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#include "wx/object.h"
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#include "wx/string.h"
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#include "wx/filefn.h" // for off_t, wxInvalidOffset and wxSeekMode
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class WXDLLEXPORT wxInputStream;
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class WXDLLEXPORT wxOutputStream;
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typedef wxInputStream& (*__wxInputManip)(wxInputStream&);
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typedef wxOutputStream& (*__wxOutputManip)(wxOutputStream&);
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wxOutputStream& WXDLLEXPORT wxEndL(wxOutputStream& o_stream);
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// ---------------------------------------------------------------------------
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// Stream buffer
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// ---------------------------------------------------------------------------
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class WXDLLEXPORT wxStreamBuffer {
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public:
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wxStreamBuffer(wxInputStream& stream);
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wxStreamBuffer(wxOutputStream& stream);
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~wxStreamBuffer();
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void Read(void *buffer, size_t size);
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void Write(const void *buffer, size_t size);
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void WriteBack(char c);
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void SetBufferIO(char *buffer_start, char *buffer_end);
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void SetBufferIO(size_t bufsize);
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void ResetBuffer();
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void SetBufferPosition(char *buffer_position)
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{ m_buffer_pos = buffer_position; }
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void SetIntPosition(size_t pos)
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{ m_buffer_pos = m_buffer_start + pos; }
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char *GetBufferPosition() const { return m_buffer_pos; }
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size_t GetIntPosition() const { return m_buffer_pos - m_buffer_start; }
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char *GetBufferStart() const { return m_buffer_start; }
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char *GetBufferEnd() const { return m_buffer_end; }
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size_t GetBufferSize() const { return m_buffer_size; }
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size_t GetLastAccess() const { return m_buffer_end - m_buffer_start; }
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protected:
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char *m_buffer_start, *m_buffer_end, *m_buffer_pos;
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size_t m_buffer_size;
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wxInputStream *m_istream;
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wxOutputStream *m_ostream;
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};
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// ---------------------------------------------------------------------------
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// wxStream: base classes
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// ---------------------------------------------------------------------------
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class WXDLLEXPORT wxInputStream {
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public:
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wxInputStream();
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virtual ~wxInputStream();
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// IO functions
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virtual char Peek() { return 0; }
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virtual char GetC();
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virtual wxInputStream& Read(void *buffer, size_t size);
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wxInputStream& Read(wxOutputStream& stream_out);
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// Position functions
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virtual off_t SeekI(off_t pos, wxSeekMode mode = wxFromStart);
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virtual off_t TellI() const;
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// State functions
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bool Eof() const { return m_eof; }
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size_t LastRead() { return m_lastread; }
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wxStreamBuffer *InputStreamBuffer() { return m_i_streambuf; }
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// Operators
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wxInputStream& operator>>(wxOutputStream& out) { return Read(out); }
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wxInputStream& operator>>(wxString& line);
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wxInputStream& operator>>(char& c);
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wxInputStream& operator>>(short& i);
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wxInputStream& operator>>(int& i);
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wxInputStream& operator>>(long& i);
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wxInputStream& operator>>(float& i);
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#if USE_SERIAL
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wxInputStream& operator>>(wxObject *& obj);
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#endif
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wxInputStream& operator>>(unsigned char& c) { return operator>>((char&)c); }
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wxInputStream& operator>>(unsigned short& i) { return operator>>((short&)i); }
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wxInputStream& operator>>(unsigned int& i) { return operator>>((int&)i); }
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wxInputStream& operator>>(unsigned long& i) { return operator>>((long&)i); }
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wxInputStream& operator>>( __wxInputManip func) { return func(*this); }
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protected:
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friend class wxStreamBuffer;
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friend class wxFilterInputStream;
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wxInputStream(wxStreamBuffer *buffer);
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virtual size_t DoRead(void *WXUNUSED(buffer), size_t WXUNUSED(size) )
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{ return 0; }
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virtual off_t DoSeekInput( off_t WXUNUSED(pos), wxSeekMode WXUNUSED(mode) )
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{ return wxInvalidOffset; }
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virtual off_t DoTellInput() const
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{ return wxInvalidOffset; }
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protected:
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bool m_eof, m_i_destroybuf;
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size_t m_lastread;
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wxStreamBuffer *m_i_streambuf;
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};
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class WXDLLEXPORT wxOutputStream {
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public:
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wxOutputStream();
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virtual ~wxOutputStream();
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virtual wxOutputStream& Write(const void *buffer, size_t size);
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wxOutputStream& Write(wxInputStream& stream_in);
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virtual off_t SeekO(off_t pos, wxSeekMode mode = wxFromStart);
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virtual off_t TellO() const;
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virtual bool Bad() const { return m_bad; }
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virtual size_t LastWrite() const { return m_lastwrite; }
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wxStreamBuffer *OutputStreamBuffer() { return m_o_streambuf; }
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virtual void Sync();
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wxOutputStream& operator<<(wxInputStream& out) { return Write(out); }
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wxOutputStream& operator<<(const char *string);
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wxOutputStream& operator<<(wxString& string);
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wxOutputStream& operator<<(char c);
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wxOutputStream& operator<<(short i);
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wxOutputStream& operator<<(int i);
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wxOutputStream& operator<<(long i);
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wxOutputStream& operator<<(double f);
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#if USE_SERIAL
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wxOutputStream& operator<<(wxObject& obj);
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#endif
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wxOutputStream& operator<<(float f) { return operator<<((double)f); }
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wxOutputStream& operator<<(unsigned char c) { return operator<<((char)c); }
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wxOutputStream& operator<<(unsigned short i) { return operator<<((short)i); }
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wxOutputStream& operator<<(unsigned int i) { return operator<<((int)i); }
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wxOutputStream& operator<<(unsigned long i) { return operator<<((long)i); }
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wxOutputStream& operator<<( __wxOutputManip func) { return func(*this); }
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protected:
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friend class wxStreamBuffer;
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friend class wxFilterOutputStream;
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wxOutputStream(wxStreamBuffer *buffer);
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virtual size_t DoWrite( const void *WXUNUSED(buffer), size_t WXUNUSED(size) )
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{ return 0; }
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virtual off_t DoSeekOutput( off_t WXUNUSED(pos), wxSeekMode WXUNUSED(mode) )
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{ return wxInvalidOffset; }
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virtual off_t DoTellOutput() const
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{ return wxInvalidOffset; }
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protected:
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bool m_bad, m_o_destroybuf;
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size_t m_lastwrite;
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wxStreamBuffer *m_o_streambuf;
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};
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class wxStream: public virtual wxInputStream,
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public virtual wxOutputStream
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{
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public:
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wxStream();
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};
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// ---------------------------------------------------------------------------
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// "Filter" streams
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// ---------------------------------------------------------------------------
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class WXDLLEXPORT wxFilterInputStream: public virtual wxInputStream {
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public:
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wxFilterInputStream();
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wxFilterInputStream(wxInputStream& stream);
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~wxFilterInputStream();
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char Peek() { return m_parent_i_stream->Peek(); }
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bool Eof() const { return m_parent_i_stream->Eof(); }
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size_t LastRead() const { return m_parent_i_stream->LastRead(); }
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off_t TellI() const { return m_parent_i_stream->TellI(); }
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protected:
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size_t DoRead(void *buffer, size_t size);
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off_t DoSeekInput(off_t pos, wxSeekMode mode);
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off_t DoTellInput() const;
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protected:
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wxInputStream *m_parent_i_stream;
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};
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class WXDLLEXPORT wxFilterOutputStream: public virtual wxOutputStream {
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public:
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wxFilterOutputStream();
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wxFilterOutputStream(wxOutputStream& stream);
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virtual ~wxFilterOutputStream();
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bool Bad() const { return m_parent_o_stream->Bad(); }
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size_t LastWrite() const { return m_parent_o_stream->LastWrite(); }
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off_t TellO() const { return m_parent_o_stream->TellO(); }
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protected:
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// The forward is implicitely done by wxStreamBuffer.
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size_t DoWrite(const void *buffer, size_t size);
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off_t DoSeekOutput(off_t pos, wxSeekMode mode);
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off_t DoTellOutput() const;
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protected:
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wxOutputStream *m_parent_o_stream;
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};
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class WXDLLEXPORT wxFilterStream: public wxStream,
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public virtual wxFilterInputStream,
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public virtual wxFilterOutputStream {
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public:
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wxFilterStream(wxStream& stream);
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wxFilterStream();
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};
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#endif
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