ccec90930c
Add simple wxVersionInfo class holding the version information.
Also add GetLibraryVersionInfo() static method to wx{JPEG,PNG,TIFF}Handler,
wxStyledTextCtrl and wxXmlDocument classes and wxGetZlibVersionInfo() and
wxGetLibraryVersionInfo() global functions using it.
Closes #12690.
git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@66259 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775
150 lines
4.3 KiB
C++
150 lines
4.3 KiB
C++
/////////////////////////////////////////////////////////////////////////////
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// Name: wx/zstream.h
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// Purpose: Memory stream classes
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// Author: Guilhem Lavaux
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// Modified by: Mike Wetherell
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// Created: 11/07/98
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// RCS-ID: $Id$
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// Copyright: (c) Guilhem Lavaux
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// Licence: wxWindows licence
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/////////////////////////////////////////////////////////////////////////////
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#ifndef _WX_WXZSTREAM_H__
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#define _WX_WXZSTREAM_H__
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#include "wx/defs.h"
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#if wxUSE_ZLIB && wxUSE_STREAMS
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#include "wx/stream.h"
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#include "wx/versioninfo.h"
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// Compression level
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enum wxZlibCompressionLevels {
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wxZ_DEFAULT_COMPRESSION = -1,
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wxZ_NO_COMPRESSION = 0,
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wxZ_BEST_SPEED = 1,
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wxZ_BEST_COMPRESSION = 9
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};
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// Flags
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enum wxZLibFlags {
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wxZLIB_NO_HEADER = 0, // raw deflate stream, no header or checksum
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wxZLIB_ZLIB = 1, // zlib header and checksum
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wxZLIB_GZIP = 2, // gzip header and checksum, requires zlib 1.2.1+
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wxZLIB_AUTO = 3 // autodetect header zlib or gzip
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};
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class WXDLLIMPEXP_BASE wxZlibInputStream: public wxFilterInputStream {
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public:
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wxZlibInputStream(wxInputStream& stream, int flags = wxZLIB_AUTO);
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wxZlibInputStream(wxInputStream *stream, int flags = wxZLIB_AUTO);
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virtual ~wxZlibInputStream();
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char Peek() { return wxInputStream::Peek(); }
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wxFileOffset GetLength() const { return wxInputStream::GetLength(); }
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static bool CanHandleGZip();
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bool SetDictionary(const char *data, const size_t datalen);
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bool SetDictionary(const wxMemoryBuffer &buf);
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protected:
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size_t OnSysRead(void *buffer, size_t size);
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wxFileOffset OnSysTell() const { return m_pos; }
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private:
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void Init(int flags);
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protected:
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size_t m_z_size;
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unsigned char *m_z_buffer;
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struct z_stream_s *m_inflate;
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wxFileOffset m_pos;
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wxDECLARE_NO_COPY_CLASS(wxZlibInputStream);
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};
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class WXDLLIMPEXP_BASE wxZlibOutputStream: public wxFilterOutputStream {
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public:
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wxZlibOutputStream(wxOutputStream& stream, int level = -1, int flags = wxZLIB_ZLIB);
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wxZlibOutputStream(wxOutputStream *stream, int level = -1, int flags = wxZLIB_ZLIB);
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virtual ~wxZlibOutputStream() { Close(); }
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void Sync() { DoFlush(false); }
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bool Close();
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wxFileOffset GetLength() const { return m_pos; }
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static bool CanHandleGZip();
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bool SetDictionary(const char *data, const size_t datalen);
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bool SetDictionary(const wxMemoryBuffer &buf);
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protected:
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size_t OnSysWrite(const void *buffer, size_t size);
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wxFileOffset OnSysTell() const { return m_pos; }
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virtual void DoFlush(bool final);
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private:
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void Init(int level, int flags);
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protected:
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size_t m_z_size;
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unsigned char *m_z_buffer;
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struct z_stream_s *m_deflate;
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wxFileOffset m_pos;
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wxDECLARE_NO_COPY_CLASS(wxZlibOutputStream);
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};
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class WXDLLIMPEXP_BASE wxZlibClassFactory: public wxFilterClassFactory
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{
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public:
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wxZlibClassFactory();
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wxFilterInputStream *NewStream(wxInputStream& stream) const
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{ return new wxZlibInputStream(stream); }
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wxFilterOutputStream *NewStream(wxOutputStream& stream) const
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{ return new wxZlibOutputStream(stream, -1); }
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wxFilterInputStream *NewStream(wxInputStream *stream) const
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{ return new wxZlibInputStream(stream); }
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wxFilterOutputStream *NewStream(wxOutputStream *stream) const
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{ return new wxZlibOutputStream(stream, -1); }
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const wxChar * const *GetProtocols(wxStreamProtocolType type
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= wxSTREAM_PROTOCOL) const;
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private:
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DECLARE_DYNAMIC_CLASS(wxZlibClassFactory)
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};
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class WXDLLIMPEXP_BASE wxGzipClassFactory: public wxFilterClassFactory
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{
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public:
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wxGzipClassFactory();
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wxFilterInputStream *NewStream(wxInputStream& stream) const
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{ return new wxZlibInputStream(stream); }
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wxFilterOutputStream *NewStream(wxOutputStream& stream) const
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{ return new wxZlibOutputStream(stream, -1); }
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wxFilterInputStream *NewStream(wxInputStream *stream) const
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{ return new wxZlibInputStream(stream); }
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wxFilterOutputStream *NewStream(wxOutputStream *stream) const
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{ return new wxZlibOutputStream(stream, -1); }
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const wxChar * const *GetProtocols(wxStreamProtocolType type
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= wxSTREAM_PROTOCOL) const;
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private:
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DECLARE_DYNAMIC_CLASS(wxGzipClassFactory)
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};
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WXDLLIMPEXP_BASE wxVersionInfo wxGetZlibVersionInfo();
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#endif
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// wxUSE_ZLIB && wxUSE_STREAMS
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#endif
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// _WX_WXZSTREAM_H__
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