X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/219f895a273cdf12ded3f79dbbcd1e076fe83901..880d76dfb12d4e8466df30d641bb25c6f71bd398:/include/wx/mstream.h diff --git a/include/wx/mstream.h b/include/wx/mstream.h index 716c809967..8e12d63274 100644 --- a/include/wx/mstream.h +++ b/include/wx/mstream.h @@ -1,5 +1,5 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: mstream.h +// Name: wx/mstream.h // Purpose: Memory stream classes // Author: Guilhem Lavaux // Modified by: @@ -8,70 +8,103 @@ // Copyright: (c) Guilhem Lavaux // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// -#ifndef __WXMMSTREAM_H__ -#define __WXMMSTREAM_H__ -#include "wx/object.h" +#ifndef _WX_WXMMSTREAM_H__ +#define _WX_WXMMSTREAM_H__ + +#include "wx/defs.h" + +#if wxUSE_STREAMS + #include "wx/stream.h" -class wxMemoryStreamBase: public wxStream { - DECLARE_CLASS(wxMemoryStreamBase) - public: - wxMemoryStreamBase(char *data, size_t length, int iolimit); - virtual ~wxMemoryStreamBase(); - - // Input part - wxInputStream& Read(void *buffer, size_t size); - size_t SeekI(int pos, wxWhenceType whence = wxBeginPosition); - size_t TellI() const { return m_position_i; } - - bool Eof() const { return m_eof; } - size_t LastRead() const { return m_lastread; } - - // Output part - wxOutputStream& Write(const void *buffer, size_t size); - size_t SeekO(int pos, wxWhenceType whence = wxBeginPosition); - size_t TellO() const { return m_position_o; } - - bool Bad() const { return m_bad; } - size_t LastWrite() const { return m_lastwrite; } - void Sync() {} - - protected: - bool ChangeBufferSize(size_t new_length); - - protected: - bool m_bad, m_eof, m_persistent; - size_t m_lastread, m_lastwrite; - size_t m_length; - size_t m_position_i, m_position_o; - char *m_buffer; - int m_iolimit; -}; +class WXDLLIMPEXP_FWD_BASE wxMemoryOutputStream; +class WXDLLIMPEXP_BASE wxMemoryInputStream : public wxInputStream +{ +public: + wxMemoryInputStream(const void *data, size_t length); + wxMemoryInputStream(const wxMemoryOutputStream& stream); + wxMemoryInputStream(wxInputStream& stream, + wxFileOffset lenFile = wxInvalidOffset) + { + InitFromStream(stream, lenFile); + } + wxMemoryInputStream(wxMemoryInputStream& stream) + : wxInputStream() + { + InitFromStream(stream, wxInvalidOffset); + } -class wxMemoryInputStream: public wxMemoryStreamBase { - DECLARE_CLASS(wxMemoryInputStream) - public: - wxMemoryInputStream(char *data, size_t length) - : wxMemoryStreamBase(data, length, 1) - {} -}; + virtual ~wxMemoryInputStream(); + virtual wxFileOffset GetLength() const { return m_length; } + virtual bool IsSeekable() const { return true; } + + virtual char Peek(); + virtual bool CanRead() const; + + wxStreamBuffer *GetInputStreamBuffer() const { return m_i_streambuf; } + +#if WXWIN_COMPATIBILITY_2_6 + // deprecated, compatibility only + wxDEPRECATED( wxStreamBuffer *InputStreamBuffer() const ); +#endif // WXWIN_COMPATIBILITY_2_6 + +protected: + wxStreamBuffer *m_i_streambuf; + + size_t OnSysRead(void *buffer, size_t nbytes); + wxFileOffset OnSysSeek(wxFileOffset pos, wxSeekMode mode); + wxFileOffset OnSysTell() const; + +private: + // common part of ctors taking wxInputStream + void InitFromStream(wxInputStream& stream, wxFileOffset lenFile); -class wxMemoryOutputStream: public wxMemoryStreamBase { - DECLARE_DYNAMIC_CLASS(wxMemoryOutputStream) - public: - wxMemoryOutputStream(char *data = NULL, size_t length = 0) - : wxMemoryStreamBase(data, length, 2) - {} + size_t m_length; + + // copy ctor is implemented above: it copies the other stream in this one + DECLARE_ABSTRACT_CLASS(wxMemoryInputStream) + wxDECLARE_NO_ASSIGN_CLASS(wxMemoryInputStream); }; -class wxMemoryStream: public wxMemoryStreamBase { - DECLARE_DYNAMIC_CLASS(wxMemoryStream) - public: - wxMemoryStream(char *data = NULL, size_t length = 0) - : wxMemoryStreamBase(data, length, 0) - {} +class WXDLLIMPEXP_BASE wxMemoryOutputStream : public wxOutputStream +{ +public: + // if data is !NULL it must be allocated with malloc() + wxMemoryOutputStream(void *data = NULL, size_t length = 0); + virtual ~wxMemoryOutputStream(); + virtual wxFileOffset GetLength() const { return m_o_streambuf->GetLastAccess(); } + virtual bool IsSeekable() const { return true; } + + size_t CopyTo(void *buffer, size_t len) const; + + wxStreamBuffer *GetOutputStreamBuffer() const { return m_o_streambuf; } + +#if WXWIN_COMPATIBILITY_2_6 + // deprecated, compatibility only + wxDEPRECATED( wxStreamBuffer *OutputStreamBuffer() const ); +#endif // WXWIN_COMPATIBILITY_2_6 + +protected: + wxStreamBuffer *m_o_streambuf; + +protected: + size_t OnSysWrite(const void *buffer, size_t nbytes); + wxFileOffset OnSysSeek(wxFileOffset pos, wxSeekMode mode); + wxFileOffset OnSysTell() const; + + DECLARE_DYNAMIC_CLASS(wxMemoryOutputStream) + wxDECLARE_NO_COPY_CLASS(wxMemoryOutputStream); }; +#if WXWIN_COMPATIBILITY_2_6 + inline wxStreamBuffer *wxMemoryInputStream::InputStreamBuffer() const { return m_i_streambuf; } + inline wxStreamBuffer *wxMemoryOutputStream::OutputStreamBuffer() const { return m_o_streambuf; } +#endif // WXWIN_COMPATIBILITY_2_6 + +#endif + // wxUSE_STREAMS + #endif + // _WX_WXMMSTREAM_H__