X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/c740f49634629e47738ea73a199ea1a97640dc53..ca77701441e39245dcbfce903049e76f166979e5:/include/wx/mstream.h diff --git a/include/wx/mstream.h b/include/wx/mstream.h index 2214aa58e5..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: @@ -8,64 +8,103 @@ // Copyright: (c) Guilhem Lavaux // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// + #ifndef _WX_WXMMSTREAM_H__ #define _WX_WXMMSTREAM_H__ -#include +#include "wx/defs.h" -class wxMemoryStreamBase { - protected: - wxMemoryStreamBase(); - virtual ~wxMemoryStreamBase(); +#if wxUSE_STREAMS - bool ChangeBufferSize(size_t new_length); +#include "wx/stream.h" - protected: - bool m_persistent; - size_t m_length; - char *m_buffer; - int m_iolimit; -}; +class WXDLLIMPEXP_FWD_BASE wxMemoryOutputStream; -class wxMemoryInputStream: public virtual wxMemoryStreamBase, public wxInputStream { - public: - wxMemoryInputStream(const char *data, size_t length); - virtual ~wxMemoryInputStream(); +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); + } - char Peek(); + virtual ~wxMemoryInputStream(); + virtual wxFileOffset GetLength() const { return m_length; } + virtual bool IsSeekable() const { return true; } - protected: - - size_t DoRead(void *buffer, size_t size); - off_t DoSeekInput(off_t pos, wxSeekMode mode); - off_t DoTellInput() const { return m_position_i; } + virtual char Peek(); + virtual bool CanRead() const; - protected: - off_t m_position_i; -}; + wxStreamBuffer *GetInputStreamBuffer() const { return m_i_streambuf; } + +#if WXWIN_COMPATIBILITY_2_6 + // deprecated, compatibility only + wxDEPRECATED( wxStreamBuffer *InputStreamBuffer() const ); +#endif // WXWIN_COMPATIBILITY_2_6 -class wxMemoryOutputStream: public virtual wxMemoryStreamBase, public wxOutputStream { - public: - wxMemoryOutputStream(char *data = NULL, size_t length = 0); - virtual ~wxMemoryOutputStream(); +protected: + wxStreamBuffer *m_i_streambuf; - char *GetData() { Sync(); return m_buffer; } - size_t GetLength() { Sync(); return m_length; } + size_t OnSysRead(void *buffer, size_t nbytes); + wxFileOffset OnSysSeek(wxFileOffset pos, wxSeekMode mode); + wxFileOffset OnSysTell() const; - protected: +private: + // common part of ctors taking wxInputStream + void InitFromStream(wxInputStream& stream, wxFileOffset lenFile); - size_t DoWrite(const void *buffer, size_t size); - off_t DoSeekOutput(off_t pos, wxSeekMode mode); - off_t DoTellOutput() const { return m_position_o; } + size_t m_length; - protected: - off_t m_position_o; + // 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 wxMemoryInputStream, public wxMemoryOutputStream { - public: - wxMemoryStream(char *data = NULL, size_t length = 0); - virtual ~wxMemoryStream(); +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__