X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/79c3e0e1aeebb64da2ac893e6ed7b27edca01a64..3b49331b7441e091fc5997b830801d76a1243f28:/include/wx/zstream.h?ds=sidebyside diff --git a/include/wx/zstream.h b/include/wx/zstream.h index 34bb20f672..f662277d18 100644 --- a/include/wx/zstream.h +++ b/include/wx/zstream.h @@ -1,63 +1,140 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: zstream.h +// Name: wx/zstream.h // Purpose: Memory stream classes // Author: Guilhem Lavaux -// Modified by: +// Modified by: Mike Wetherell // Created: 11/07/98 // RCS-ID: $Id$ // Copyright: (c) Guilhem Lavaux // Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// -#ifndef __WXZSTREAM_H__ -#define __WXZSTREAM_H__ +#ifndef _WX_WXZSTREAM_H__ +#define _WX_WXZSTREAM_H__ -#ifdef __GNUG__ -#pragma interface -#endif +#include "wx/defs.h" + +#if wxUSE_ZLIB && wxUSE_STREAMS -#include -#include "zlib.h" +#include "wx/stream.h" + +// Compression level +enum { + wxZ_DEFAULT_COMPRESSION = -1, + wxZ_NO_COMPRESSION = 0, + wxZ_BEST_SPEED = 1, + wxZ_BEST_COMPRESSION = 9 +}; -class wxZlibInputStream: public wxFilterInputStream { - DECLARE_CLASS(wxZlibInputStream) +// Flags +enum { + wxZLIB_NO_HEADER = 0, // raw deflate stream, no header or checksum + wxZLIB_ZLIB = 1, // zlib header and checksum + wxZLIB_GZIP = 2, // gzip header and checksum, requires zlib 1.2.1+ + wxZLIB_AUTO = 3 // autodetect header zlib or gzip +}; + +class WXDLLIMPEXP_BASE wxZlibInputStream: public wxFilterInputStream { public: - wxZlibInputStream(wxInputStream& stream); + wxZlibInputStream(wxInputStream& stream, int flags = wxZLIB_AUTO); + wxZlibInputStream(wxInputStream *stream, int flags = wxZLIB_AUTO); virtual ~wxZlibInputStream(); - wxInputStream& Read(void *buffer, size_t size); - off_t SeekI(off_t pos, wxSeekMode mode = wxFromStart); - off_t TellI() const; + char Peek() { return wxInputStream::Peek(); } + wxFileOffset GetLength() const { return wxInputStream::GetLength(); } + + static bool CanHandleGZip(); - size_t LastRead() const { return m_lastread; } - bool Eof() const; + protected: + size_t OnSysRead(void *buffer, size_t size); + wxFileOffset OnSysTell() const { return m_pos; } + + private: + void Init(int flags); protected: - size_t m_lastread; size_t m_z_size; unsigned char *m_z_buffer; - bool m_eof; - struct z_stream_s m_inflate; + struct z_stream_s *m_inflate; + wxFileOffset m_pos; + + DECLARE_NO_COPY_CLASS(wxZlibInputStream) }; -class wxZlibOutputStream: public wxFilterOutputStream { - DECLARE_CLASS(wxZlibOutputStream) +class WXDLLIMPEXP_BASE wxZlibOutputStream: public wxFilterOutputStream { public: - wxZlibOutputStream(wxOutputStream& stream); - virtual ~wxZlibOutputStream(); + wxZlibOutputStream(wxOutputStream& stream, int level = -1, int flags = wxZLIB_ZLIB); + wxZlibOutputStream(wxOutputStream *stream, int level = -1, int flags = wxZLIB_ZLIB); + virtual ~wxZlibOutputStream() { Close(); } + + void Sync() { DoFlush(false); } + bool Close(); + wxFileOffset GetLength() const { return m_pos; } + + static bool CanHandleGZip(); + + protected: + size_t OnSysWrite(const void *buffer, size_t size); + wxFileOffset OnSysTell() const { return m_pos; } - wxOutputStream& Write(const void *buffer, size_t size); - off_t SeekO(off_t pos, wxSeekMode mode = wxFromStart); - off_t TellO() const; + virtual void DoFlush(bool final); - size_t LastWrite() const { return m_lastwrite; } - bool Bad() const; + private: + void Init(int level, int flags); protected: - size_t m_lastwrite; size_t m_z_size; unsigned char *m_z_buffer; - bool m_bad; - struct z_stream_s m_deflate; + struct z_stream_s *m_deflate; + wxFileOffset m_pos; + + DECLARE_NO_COPY_CLASS(wxZlibOutputStream) +}; + +class WXDLLIMPEXP_BASE wxZlibClassFactory: public wxFilterClassFactory +{ +public: + wxZlibClassFactory(); + + wxFilterInputStream *NewStream(wxInputStream& stream) const + { return new wxZlibInputStream(stream); } + wxFilterOutputStream *NewStream(wxOutputStream& stream) const + { return new wxZlibOutputStream(stream, -1); } + wxFilterInputStream *NewStream(wxInputStream *stream) const + { return new wxZlibInputStream(stream); } + wxFilterOutputStream *NewStream(wxOutputStream *stream) const + { return new wxZlibOutputStream(stream, -1); } + + const wxChar * const *GetProtocols(wxStreamProtocolType type + = wxSTREAM_PROTOCOL) const; + +private: + DECLARE_DYNAMIC_CLASS(wxZlibClassFactory) +}; + +class WXDLLIMPEXP_BASE wxGzipClassFactory: public wxFilterClassFactory +{ +public: + wxGzipClassFactory(); + + wxFilterInputStream *NewStream(wxInputStream& stream) const + { return new wxZlibInputStream(stream); } + wxFilterOutputStream *NewStream(wxOutputStream& stream) const + { return new wxZlibOutputStream(stream, -1); } + wxFilterInputStream *NewStream(wxInputStream *stream) const + { return new wxZlibInputStream(stream); } + wxFilterOutputStream *NewStream(wxOutputStream *stream) const + { return new wxZlibOutputStream(stream, -1); } + + const wxChar * const *GetProtocols(wxStreamProtocolType type + = wxSTREAM_PROTOCOL) const; + +private: + DECLARE_DYNAMIC_CLASS(wxGzipClassFactory) }; #endif + // wxUSE_ZLIB && wxUSE_STREAMS + +#endif + // _WX_WXZSTREAM_H__ +