X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/bddd7a8d8953cf4c09e56c13e1bfcc594ba0267e..f60b1d829dd8a6d5e47a2adcd3690acb3bd10150:/include/wx/stream.h diff --git a/include/wx/stream.h b/include/wx/stream.h index 2c770c2b3e..d40eb66733 100644 --- a/include/wx/stream.h +++ b/include/wx/stream.h @@ -12,7 +12,7 @@ #ifndef _WX_WXSTREAM_H__ #define _WX_WXSTREAM_H__ -#if defined(__GNUG__) && !defined(__APPLE__) +#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA) #pragma interface "stream.h" #endif @@ -23,7 +23,7 @@ #include #include "wx/object.h" #include "wx/string.h" -#include "wx/filefn.h" // for off_t, wxInvalidOffset and wxSeekMode +#include "wx/filefn.h" // for wxFileOffset, wxInvalidOffset and wxSeekMode class WXDLLIMPEXP_BASE wxStreamBase; class WXDLLIMPEXP_BASE wxInputStream; @@ -81,18 +81,34 @@ public: // reset the stream state void Reset() { m_lasterror = wxSTREAM_NO_ERROR; } - // deprecated (doesn't make sense!), don't use - virtual size_t GetSize() const { return 0; } + // this doesn't make sense for all streams, always test its return value + virtual size_t GetSize() const; + virtual wxFileOffset GetLength() const { return wxInvalidOffset; } + + // returns true if the streams supports seeking to arbitrary offsets + virtual bool IsSeekable() const { return false; } #if WXWIN_COMPATIBILITY_2_2 // deprecated, for compatibility only - wxStreamError LastError() const { return m_lasterror; } - size_t StreamSize() const { return GetSize(); } + wxDEPRECATED( wxStreamError LastError() const ); + wxDEPRECATED( size_t StreamSize() const ); #endif // WXWIN_COMPATIBILITY_2_2 + + // Reserved for future use + virtual void ReservedStreamFunc1() {} + virtual void ReservedStreamFunc2() {} + virtual void ReservedStreamFunc3() {} + virtual void ReservedStreamFunc4() {} + virtual void ReservedStreamFunc5() {} + virtual void ReservedStreamFunc6() {} + virtual void ReservedStreamFunc7() {} + virtual void ReservedStreamFunc8() {} + virtual void ReservedStreamFunc9() {} + protected: - virtual off_t OnSysSeek(off_t seek, wxSeekMode mode); - virtual off_t OnSysTell() const; + virtual wxFileOffset OnSysSeek(wxFileOffset seek, wxSeekMode mode); + virtual wxFileOffset OnSysTell() const; size_t m_lastcount; wxStreamError m_lasterror; @@ -159,7 +175,7 @@ public: // all the requested data or not virtual size_t LastRead() const { return wxStreamBase::m_lastcount; } - // returns TRUE if some data is available in the stream right now, so that + // returns true if some data is available in the stream right now, so that // calling Read() wouldn't block virtual bool CanRead() const; @@ -181,7 +197,7 @@ public: // put back the specified character in the stream // - // returns TRUE if ok, FALSE on error + // returns true if ok, false on error bool Ungetch(char c); @@ -192,10 +208,10 @@ public: // it) // // returns wxInvalidOffset on error - virtual off_t SeekI(off_t pos, wxSeekMode mode = wxFromStart); + virtual wxFileOffset SeekI(wxFileOffset pos, wxSeekMode mode = wxFromStart); // return the current position of the stream pointer or wxInvalidOffset - virtual off_t TellI() const; + virtual wxFileOffset TellI() const; // stream-like operators @@ -207,7 +223,7 @@ public: protected: // do read up to size bytes of data into the provided buffer // - // this method should return 0 if EOF has been reached or an error occured + // this method should return 0 if EOF has been reached or an error occurred // (m_lasterror should be set accordingly as well) or the number of bytes // read virtual size_t OnSysRead(void *buffer, size_t size) = 0; @@ -232,6 +248,8 @@ protected: size_t m_wbackcur; friend class wxStreamBuffer; + + DECLARE_NO_COPY_CLASS(wxInputStream) }; // ---------------------------------------------------------------------------- @@ -248,12 +266,13 @@ public: virtual wxOutputStream& Write(const void *buffer, size_t size); wxOutputStream& Write(wxInputStream& stream_in); - virtual off_t SeekO(off_t pos, wxSeekMode mode = wxFromStart); - virtual off_t TellO() const; + virtual wxFileOffset SeekO(wxFileOffset pos, wxSeekMode mode = wxFromStart); + virtual wxFileOffset TellO() const; virtual size_t LastWrite() const { return wxStreamBase::m_lastcount; } virtual void Sync(); + virtual bool Close() { return true; } wxOutputStream& operator<<(wxInputStream& out) { return Write(out); } wxOutputStream& operator<<( __wxOutputManip func) { return func(*this); } @@ -264,6 +283,8 @@ protected: virtual size_t OnSysWrite(const void *buffer, size_t bufsize); friend class wxStreamBuffer; + + DECLARE_NO_COPY_CLASS(wxOutputStream) }; // ============================================================================ @@ -279,15 +300,17 @@ class WXDLLIMPEXP_BASE wxCountingOutputStream : public wxOutputStream public: wxCountingOutputStream(); - size_t GetSize() const; - bool Ok() const { return TRUE; } + wxFileOffset GetLength() const; + bool Ok() const { return true; } protected: virtual size_t OnSysWrite(const void *buffer, size_t size); - virtual off_t OnSysSeek(off_t pos, wxSeekMode mode); - virtual off_t OnSysTell() const; + virtual wxFileOffset OnSysSeek(wxFileOffset pos, wxSeekMode mode); + virtual wxFileOffset OnSysTell() const; size_t m_currentPos; + + DECLARE_NO_COPY_CLASS(wxCountingOutputStream) }; // --------------------------------------------------------------------------- @@ -303,7 +326,7 @@ public: char Peek() { return m_parent_i_stream->Peek(); } - size_t GetSize() const { return m_parent_i_stream->GetSize(); } + wxFileOffset GetLength() const { return m_parent_i_stream->GetLength(); } wxInputStream *GetFilterInputStream() const { return m_parent_i_stream; } @@ -320,7 +343,7 @@ public: wxFilterOutputStream(wxOutputStream& stream); virtual ~wxFilterOutputStream(); - size_t GetSize() const { return m_parent_o_stream->GetSize(); } + wxFileOffset GetLength() const { return m_parent_o_stream->GetLength(); } wxOutputStream *GetFilterOutputStream() const { return m_parent_o_stream; } @@ -362,16 +385,16 @@ public: virtual char Peek(); virtual char GetChar(); virtual void PutChar(char c); - virtual off_t Tell() const; - virtual off_t Seek(off_t pos, wxSeekMode mode); + virtual wxFileOffset Tell() const; + virtual wxFileOffset Seek(wxFileOffset pos, wxSeekMode mode); // Buffer control void ResetBuffer(); // NB: the buffer must always be allocated with malloc() if takeOwn is - // TRUE as it will be deallocated by free() - void SetBufferIO(void *start, void *end, bool takeOwnership = FALSE); - void SetBufferIO(void *start, size_t len, bool takeOwnership = FALSE); + // true as it will be deallocated by free() + void SetBufferIO(void *start, void *end, bool takeOwnership = false); + void SetBufferIO(void *start, size_t len, bool takeOwnership = false); void SetBufferIO(size_t bufsize); void *GetBufferStart() const { return m_buffer_start; } void *GetBufferEnd() const { return m_buffer_end; } @@ -469,8 +492,9 @@ public: wxInputStream& Read(void *buffer, size_t size); // Position functions - off_t SeekI(off_t pos, wxSeekMode mode = wxFromStart); - off_t TellI() const; + wxFileOffset SeekI(wxFileOffset pos, wxSeekMode mode = wxFromStart); + wxFileOffset TellI() const; + bool IsSeekable() const { return m_parent_i_stream->IsSeekable(); } // the buffer given to the stream will be deleted by it void SetInputStreamBuffer(wxStreamBuffer *buffer); @@ -481,8 +505,8 @@ public: protected: virtual size_t OnSysRead(void *buffer, size_t bufsize); - virtual off_t OnSysSeek(off_t seek, wxSeekMode mode); - virtual off_t OnSysTell() const; + virtual wxFileOffset OnSysSeek(wxFileOffset seek, wxSeekMode mode); + virtual wxFileOffset OnSysTell() const; wxStreamBuffer *m_i_streambuf; @@ -504,12 +528,14 @@ public: wxOutputStream& Write(const void *buffer, size_t size); // Position functions - off_t SeekO(off_t pos, wxSeekMode mode = wxFromStart); - off_t TellO() const; + wxFileOffset SeekO(wxFileOffset pos, wxSeekMode mode = wxFromStart); + wxFileOffset TellO() const; + bool IsSeekable() const { return m_parent_o_stream->IsSeekable(); } void Sync(); + bool Close(); - size_t GetSize() const; + wxFileOffset GetLength() const; // the buffer given to the stream will be deleted by it void SetOutputStreamBuffer(wxStreamBuffer *buffer); @@ -520,8 +546,8 @@ public: protected: virtual size_t OnSysWrite(const void *buffer, size_t bufsize); - virtual off_t OnSysSeek(off_t seek, wxSeekMode mode); - virtual off_t OnSysTell() const; + virtual wxFileOffset OnSysSeek(wxFileOffset seek, wxSeekMode mode); + virtual wxFileOffset OnSysTell() const; wxStreamBuffer *m_o_streambuf;