X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/eda3efe2f8298c29a440bc452b5f10506aec7429..559fe022dbd5d4d961402b5c973e5225fa91f17f:/include/wx/stream.h?ds=inline diff --git a/include/wx/stream.h b/include/wx/stream.h index 692d522305..efef1ec113 100644 --- a/include/wx/stream.h +++ b/include/wx/stream.h @@ -9,108 +9,313 @@ // 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 -#include -#include +#include "wx/object.h" +#include "wx/string.h" +#include "wx/filefn.h" // for off_t, wxInvalidOffset and wxSeekMode -#ifdef _MSC_VER - #define off_t _off_t -#endif +class WXDLLEXPORT wxStreamBase; +class WXDLLEXPORT wxInputStream; +class WXDLLEXPORT wxOutputStream; + +typedef wxInputStream& (*__wxInputManip)(wxInputStream&); +typedef wxOutputStream& (*__wxOutputManip)(wxOutputStream&); + +WXDLLEXPORT wxOutputStream& wxEndL(wxOutputStream& o_stream); -/* - * wxStream: base classes - */ +// --------------------------------------------------------------------------- +// 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 { - wxFromStart, wxFromCurrent, wxFromEnd -} wxSeekMode; + wxStream_NOERROR = 0, + wxStream_EOF, + wxStream_WRITE_ERR, + wxStream_READ_ERR +} wxStreamError; -class wxOutputStream; -class wxInputStream: virtual public wxObject { - DECLARE_ABSTRACT_CLASS(wxInputStream) +class WXDLLEXPORT wxStreamBase { + public: + wxStreamBase(); + virtual ~wxStreamBase(); + + 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(); } + + 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: + friend class wxStreamBuffer; + + size_t m_lastcount; + wxStreamError m_lasterror; +}; + +class WXDLLEXPORT wxInputStream: public wxStreamBase { public: wxInputStream(); virtual ~wxInputStream(); - virtual wxInputStream& Read(void *buffer, size_t size) = 0; + // IO functions + virtual char Peek(); + char GetC(); + virtual wxInputStream& Read(void *buffer, size_t size); wxInputStream& Read(wxOutputStream& stream_out); - virtual off_t SeekI(off_t pos, wxSeekMode mode = wxFromStart) = 0; - virtual off_t TellI() const = 0; + // Position functions + virtual off_t SeekI(off_t pos, wxSeekMode mode = wxFromStart); + virtual off_t TellI() const; - virtual bool Eof() const = 0; - virtual size_t LastRead() const = 0; + // State functions + 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); } +#if wxUSE_SERIAL + wxInputStream& operator>>(wxObject *& obj); +#endif + wxInputStream& operator>>( __wxInputManip func) { return func(*this); } + + protected: + // Ungetch managers + char *m_wback; + size_t m_wbacksize; + size_t m_wbackcur; + + char *AllocSpaceWBack(size_t needed_size); + size_t GetWBack(char *buf, size_t bsize); + }; -class wxOutputStream: virtual public wxObject { - DECLARE_ABSTRACT_CLASS(wxOutputStream) +class WXDLLEXPORT wxOutputStream: public wxStreamBase { public: wxOutputStream(); virtual ~wxOutputStream(); - virtual wxOutputStream& Write(const void *buffer, size_t size) = 0; + virtual wxOutputStream& Write(const void *buffer, size_t size); wxOutputStream& Write(wxInputStream& stream_in); - virtual off_t SeekO(off_t pos, wxSeekMode mode = wxFromStart) = 0; - virtual off_t TellO() const = 0; + virtual off_t SeekO(off_t pos, wxSeekMode mode = wxFromStart); + virtual off_t TellO() const; + + virtual size_t LastWrite() const { return wxStreamBase::m_lastcount; } - virtual bool Bad() const = 0; - virtual size_t LastWrite() const = 0; + virtual void Sync(); - 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); } }; -/* - * "Filter" streams - */ +// --------------------------------------------------------------------------- +// A stream for measuring streamed output +// --------------------------------------------------------------------------- -class wxFilterInputStream: public wxInputStream { - DECLARE_CLASS(wxFilterInputStream) +class wxCountingOutputStream: public wxOutputStream { public: + wxCountingOutputStream(); + + size_t GetSize() const; + 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; + + protected: + size_t m_currentPos; +}; + + +// --------------------------------------------------------------------------- +// "Filter" streams +// --------------------------------------------------------------------------- + +class WXDLLEXPORT wxFilterInputStream: public wxInputStream { + public: + wxFilterInputStream(); wxFilterInputStream(wxInputStream& stream); - virtual ~wxFilterInputStream(); + ~wxFilterInputStream(); - virtual wxInputStream& Read(void *buffer, size_t size) - { return m_parent_i_stream->Read(buffer, size); } - virtual off_t SeekI(off_t pos, wxSeekMode mode = wxFromStart) - { return m_parent_i_stream->SeekI(pos, mode); } - virtual off_t TellI() const - { return m_parent_i_stream->TellI(); } + char Peek() { return m_parent_i_stream->Peek(); } - virtual bool Eof() const { return m_parent_i_stream->Eof(); } - virtual size_t LastRead() const { return m_parent_i_stream->LastRead(); } + size_t GetSize() const { return m_parent_i_stream->GetSize(); } protected: wxInputStream *m_parent_i_stream; }; -class wxFilterOutputStream: public wxOutputStream { - DECLARE_CLASS(wxFilterOutputStream) +class WXDLLEXPORT wxFilterOutputStream: public wxOutputStream { public: + wxFilterOutputStream(); wxFilterOutputStream(wxOutputStream& stream); - virtual ~wxFilterOutputStream(); + ~wxFilterOutputStream(); - virtual wxOutputStream& Write(const void *buffer, size_t size) - { return m_parent_o_stream->Write(buffer, size); } - virtual off_t SeekO(off_t pos, wxSeekMode mode = wxFromStart) - { return m_parent_o_stream->SeekO(pos, mode); } - virtual off_t TellO() const - { return m_parent_o_stream->TellO(); } - - virtual bool Bad() const { return m_parent_o_stream->Bad(); } - virtual size_t LastWrite() const { return m_parent_o_stream->LastWrite(); } + 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; + + 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; + + protected: + wxStreamBuffer *m_i_streambuf; +}; + +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: + 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__