mirror of
https://git.tukaani.org/xz.git
synced 2024-04-04 12:36:23 +02:00
634636fa56
be added back in some form later, but the current version wasn't modular, so it would need fixing anyway.
231 lines
6.4 KiB
C
231 lines
6.4 KiB
C
/**
|
|
* \file lzma.h
|
|
* \brief The public API of liblzma
|
|
*
|
|
* liblzma is a LZMA compression library with a zlib-like API.
|
|
* liblzma is based on LZMA SDK found from http://7-zip.org/sdk.html.
|
|
*
|
|
* \author Copyright (C) 1999-2006 Igor Pavlov
|
|
* \author Copyright (C) 2007 Lasse Collin
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Lesser General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2.1 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Lesser General Public License for more details.
|
|
*/
|
|
|
|
#ifndef LZMA_H
|
|
#define LZMA_H
|
|
|
|
/*****************************
|
|
* Required standard headers *
|
|
*****************************/
|
|
|
|
/**
|
|
* liblzma API headers need some standard types and macros. To allow
|
|
* including lzma.h without requiring the application to include other
|
|
* headers first, lzma.h includes the required standard headers unless
|
|
* they already seem to be included already or if LZMA_MANUAL_HEADERS
|
|
* has been defined.
|
|
*
|
|
* Here's what types and macros are needed and from which headers:
|
|
* - stddef.h: size_t, NULL
|
|
* - stdint.h: uint8_t, uint32_t, uint64_t, UINT32_C(n), uint64_C(n),
|
|
* UINT32_MAX, UINT64_MAX
|
|
*
|
|
* However, inttypes.h is a little more portable than stdint.h, although
|
|
* inttypes.h declares some unneeded things compared to plain stdint.h.
|
|
*
|
|
* The hacks below aren't perfect, specifically they assume that inttypes.h
|
|
* exists and that it typedefs at least uint8_t, uint32_t, and uint64_t,
|
|
* and that, in case of incomplete inttypes.h, unsigned int is 32-bit.
|
|
* If the application already takes care of setting up all the types and
|
|
* macros properly (for example by using gnulib's stdint.h or inttypes.h),
|
|
* we try to detect that the macros are already defined and don't include
|
|
* inttypes.h here again. However, you may define LZMA_MANUAL_HEADERS to
|
|
* force this file to never include any system headers.
|
|
*
|
|
* Some could argue that liblzma API should provide all the required types,
|
|
* for example lzma_uint64, LZMA_UINT64_C(n), and LZMA_UINT64_MAX. This was
|
|
* seen unnecessary mess, since most systems already provide all the necessary
|
|
* types and macros in the standard headers.
|
|
*
|
|
* Note that liblzma API still has lzma_bool, because using stdbool.h would
|
|
* break C89 and C++ programs on many systems. sizeof(bool) in C99 isn't
|
|
* necessarily the same as sizeof(bool) in C++.
|
|
*/
|
|
|
|
#ifndef LZMA_MANUAL_HEADERS
|
|
/*
|
|
* I suppose this works portably also in C++. Note that in C++,
|
|
* we need to get size_t into the global namespace.
|
|
*/
|
|
#include <stddef.h>
|
|
|
|
/*
|
|
* Skip inttypes.h if we already have all the required macros. If we
|
|
* have the macros, we assume that we have the matching typedefs too.
|
|
*/
|
|
# if !defined(UINT32_C) || !defined(UINT64_C) \
|
|
|| !defined(UINT32_MAX) || !defined(UINT64_MAX)
|
|
# ifdef __cplusplus
|
|
/*
|
|
* C99 sections 7.18.2 and 7.18.4 specify that in C++
|
|
* implementations define the limit and constant
|
|
* macros only if specifically requested. Note that
|
|
* if you want the format macros (PRIu64 etc.) too,
|
|
* you need to define __STDC_FORMAT_MACROS before
|
|
* including lzma.h, since re-including inttypes.h
|
|
* with __STDC_FORMAT_MACROS defined doesn't
|
|
* necessarily work.
|
|
*/
|
|
# ifndef __STDC_LIMIT_MACROS
|
|
# define __STDC_LIMIT_MACROS 1
|
|
# endif
|
|
# ifndef __STDC_CONSTANT_MACROS
|
|
# define __STDC_CONSTANT_MACROS 1
|
|
# endif
|
|
# endif
|
|
|
|
# include <inttypes.h>
|
|
|
|
/*
|
|
* Some old systems have only the typedefs in inttypes.h, and
|
|
* lack all the macros. For those systems, we need a few more
|
|
* hacks. We assume that unsigned int is 32-bit and unsigned
|
|
* long is either 32-bit or 64-bit. If these hacks aren't
|
|
* enough, the application has to setup the types manually
|
|
* before including lzma.h.
|
|
*/
|
|
# ifndef UINT32_C
|
|
# define UINT32_C(n) n # U
|
|
# endif
|
|
|
|
# ifndef UINT64_C
|
|
/* Get ULONG_MAX. */
|
|
# include <limits.h>
|
|
# if ULONG_MAX == 4294967295UL
|
|
# define UINT64_C(n) n ## ULL
|
|
# else
|
|
# define UINT64_C(n) n ## UL
|
|
# endif
|
|
# endif
|
|
|
|
# ifndef UINT32_MAX
|
|
# define UINT32_MAX (UINT32_C(4294967295))
|
|
# endif
|
|
|
|
# ifndef UINT64_MAX
|
|
# define UINT64_MAX (UINT64_C(18446744073709551615))
|
|
# endif
|
|
# endif
|
|
#endif /* ifdef LZMA_MANUAL_HEADERS */
|
|
|
|
|
|
/******************
|
|
* GCC extensions *
|
|
******************/
|
|
|
|
/*
|
|
* GCC extensions are used conditionally in the public API. It doesn't
|
|
* break anything if these are sometimes enabled and sometimes not, only
|
|
* affects warnings and optimizations.
|
|
*/
|
|
#if __GNUC__ >= 3
|
|
# ifndef lzma_attribute
|
|
# define lzma_attribute(attr) __attribute__(attr)
|
|
# endif
|
|
|
|
# ifndef lzma_restrict
|
|
# define lzma_restrict __restrict__
|
|
# endif
|
|
|
|
/* warn_unused_result was added in GCC 3.4. */
|
|
# ifndef lzma_attr_warn_unused_result
|
|
# if __GNUC__ == 3 && __GNUC_MINOR__ < 4
|
|
# define lzma_attr_warn_unused_result
|
|
# endif
|
|
# endif
|
|
|
|
#else
|
|
# ifndef lzma_attribute
|
|
# define lzma_attribute(attr)
|
|
# endif
|
|
|
|
# ifndef lzma_restrict
|
|
# if __STDC_VERSION__ >= 199901L
|
|
# define lzma_restrict restrict
|
|
# else
|
|
# define lzma_restrict
|
|
# endif
|
|
# endif
|
|
#endif
|
|
|
|
|
|
#ifndef lzma_attr_pure
|
|
# define lzma_attr_pure lzma_attribute((__pure__))
|
|
#endif
|
|
|
|
#ifndef lzma_attr_const
|
|
# define lzma_attr_const lzma_attribute((__const__))
|
|
#endif
|
|
|
|
#ifndef lzma_attr_warn_unused_result
|
|
# define lzma_attr_warn_unused_result \
|
|
lzma_attribute((__warn_unused_result__))
|
|
#endif
|
|
|
|
|
|
/**************
|
|
* Subheaders *
|
|
**************/
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
/*
|
|
* Subheaders check that this is defined. It is to prevent including
|
|
* them directly from applications.
|
|
*/
|
|
#define LZMA_H_INTERNAL 1
|
|
|
|
/* Basic features */
|
|
#include "lzma/version.h"
|
|
#include "lzma/init.h"
|
|
#include "lzma/base.h"
|
|
#include "lzma/vli.h"
|
|
#include "lzma/check.h"
|
|
|
|
/* Filters */
|
|
#include "lzma/filter.h"
|
|
#include "lzma/subblock.h"
|
|
#include "lzma/simple.h"
|
|
#include "lzma/delta.h"
|
|
#include "lzma/lzma.h"
|
|
|
|
/* Container formats */
|
|
#include "lzma/container.h"
|
|
|
|
/* Advanced features */
|
|
#include "lzma/stream_flags.h"
|
|
#include "lzma/block.h"
|
|
#include "lzma/index.h"
|
|
#include "lzma/index_hash.h"
|
|
|
|
/*
|
|
* All subheaders included. Undefine LZMA_H_INTERNAL to prevent applications
|
|
* re-including the subheaders.
|
|
*/
|
|
#undef LZMA_H_INTERNAL
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* ifndef LZMA_H */
|