X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/856d2e527d20faf46ce40734e858c7cc92b2f704..66f2aa61c3c7bc326f3287739eded70ca61f775d:/include/wx/zstream.h diff --git a/include/wx/zstream.h b/include/wx/zstream.h index 65fa71c615..51f8b86ef3 100644 --- a/include/wx/zstream.h +++ b/include/wx/zstream.h @@ -1,8 +1,8 @@ ///////////////////////////////////////////////////////////////////////////// -// 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 @@ -11,48 +11,139 @@ #ifndef _WX_WXZSTREAM_H__ #define _WX_WXZSTREAM_H__ -#ifdef __GNUG__ -#pragma interface -#endif +#include "wx/defs.h" + +#if wxUSE_ZLIB && wxUSE_STREAMS -#include +#include "wx/stream.h" +#include "wx/versioninfo.h" + +// Compression level +enum wxZlibCompressionLevels { + wxZ_DEFAULT_COMPRESSION = -1, + wxZ_NO_COMPRESSION = 0, + wxZ_BEST_SPEED = 1, + wxZ_BEST_COMPRESSION = 9 +}; -class wxZlibInputStream: public wxFilterInputStream { +// Flags +enum wxZLibFlags { + 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(); - bool Eof() const; + char Peek() { return wxInputStream::Peek(); } + wxFileOffset GetLength() const { return wxInputStream::GetLength(); } + + static bool CanHandleGZip(); + + bool SetDictionary(const char *data, const size_t datalen); + bool SetDictionary(const wxMemoryBuffer &buf); protected: - size_t DoRead(void *buffer, size_t size); - off_t DoSeekInput(off_t WXUNUSED(pos), wxSeekMode WXUNUSED(mode)) { return wxInvalidOffset; } - off_t DoTellInput() const { return wxInvalidOffset; } + size_t OnSysRead(void *buffer, size_t size); + wxFileOffset OnSysTell() const { return m_pos; } + + private: + void Init(int flags); protected: size_t m_z_size; unsigned char *m_z_buffer; struct z_stream_s *m_inflate; + wxFileOffset m_pos; + + wxDECLARE_NO_COPY_CLASS(wxZlibInputStream); }; -class wxZlibOutputStream: public wxFilterOutputStream { +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; } - void Sync(); + static bool CanHandleGZip(); - bool Bad() const; + bool SetDictionary(const char *data, const size_t datalen); + bool SetDictionary(const wxMemoryBuffer &buf); protected: - size_t DoWrite(const void *buffer, size_t size); - off_t DoSeekOutput(off_t WXUNUSED(pos), wxSeekMode WXUNUSED(mode)) { return wxInvalidOffset; } - off_t DoTellOutput() const { return wxInvalidOffset; } + size_t OnSysWrite(const void *buffer, size_t size); + wxFileOffset OnSysTell() const { return m_pos; } + + virtual void DoFlush(bool final); + + private: + void Init(int level, int flags); protected: size_t m_z_size; unsigned char *m_z_buffer; struct z_stream_s *m_deflate; + wxFileOffset m_pos; + + wxDECLARE_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) +}; + +WXDLLIMPEXP_BASE wxVersionInfo wxGetZlibVersionInfo(); + #endif + // wxUSE_ZLIB && wxUSE_STREAMS + +#endif + // _WX_WXZSTREAM_H__ +