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///////////////////////////////////////////////////////////////////////////////
// Name: wx/lzmastream.h
// Purpose: LZMA [de]compression classes documentation
// Author: Vadim Zeitlin
// Created: 2018-03-29
// Copyright: (c) 2018 Vadim Zeitlin <vadim@wxwidgets.org>
// Licence: wxWindows licence
///////////////////////////////////////////////////////////////////////////////
/**
@class wxLZMAInputStream
This filter stream decompresses data in XZ format.
XZ format uses LZMA2 algorithm for compression used for .xz files and is
similar to GZip or BZip2 format. Notice that it is different from, and
incompatible with, 7z archive format even although it uses the same
compression algorithm.
To decompress contents of standard input to standard output, the following
(not optimally efficient) code could be used:
@code
wxFFileInputStream fin(stdin);
wxLZMAInputStream zin(fin);
wxFFileOutputStream fout(stdout);
zin.Read(fout);
if ( zin.GetLastError() != wxSTREAM_EOF ) {
... handle error ...
}
@endcode
See @ref page_build_liblzma for information about liblzma, required in
order to use this class.
@library{wxbase}
@category{archive,streams}
@see wxInputStream, wxZlibInputStream, wxLZMAOutputStream.
@since 3.1.2
*/
class wxLZMAInputStream : public wxFilterInputStream
{
public:
/**
Create decompressing stream associated with the given underlying
stream.
This overload does not take ownership of the @a stream.
*/
wxLZMAInputStream(wxInputStream& stream);
/**
Create decompressing stream associated with the given underlying
stream and takes ownership of it.
As with the base wxFilterInputStream class, passing @a stream by
pointer indicates that this object takes ownership of it and will
delete it when it is itself destroyed.
*/
wxLZMAInputStream(wxInputStream* stream);
};
/**
@class wxLZMAOutputStream
This filter stream compresses data using XZ format.
XZ format uses LZMA compression, making it (significantly) more efficient
than Gzip format used by wxZlibOutputStream. Output generated by this class
is compatible with xz utilities working with .xz files and also supported
by 7-Zip program, even though it is different from its native .7z format.
See @ref page_build_liblzma for information about liblzma, required in
order to use this class.
@library{wxbase}
@category{archive,streams}
@see wxOutputStream, wxZlibOutputStream, wxLZMAInputStream
@since 3.1.2
*/
class wxLZMAOutputStream : public wxFilterOutputStream
{
/**
Create compressing stream associated with the given underlying
stream.
This overload does not take ownership of the @a stream.
*/
wxLZMAOutputStream(wxOutputStream& stream);
/**
Create compressing stream associated with the given underlying
stream and takes ownership of it.
As with the base wxFilterOutputStream class, passing @a stream by
pointer indicates that this object takes ownership of it and will
delete it when it is itself destroyed.
*/
wxLZMAOutputStream(wxOutputStream* stream);
};
/**
Return the version of liblzma library used by LZMA stream classes.
@see wxVersionInfo
@header{wx/lzmastream.h}
@library{wxbase}
@since 3.1.2
*/
wxVersionInfo wxGetLibLZMAVersionInfo();
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