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/**
* \file api/lzma.h
* \brief The public API of liblzma data compression library
*
* liblzma is a public domain general-purpose data compression library with
* a zlib-like API. The native file format is .xz, but also the old .lzma
* format and raw (no headers) streams are supported. Multiple compression
* algorithms (filters) are supported. Currently LZMA2 is the primary filter.
*
* liblzma is part of XZ Utils <http://tukaani.org/xz/>. XZ Utils includes
* a gzip-like command line tool named xz and some other tools. XZ Utils
* is developed and maintained by Lasse Collin.
*
* Major parts of liblzma are based on Igor Pavlov's public domain LZMA SDK
* <http://7-zip.org/sdk.html>.
*
* The SHA-256 implementation is based on the public domain code found from
* 7-Zip <http://7-zip.org/>, which has a modified version of the public
* domain SHA-256 code found from Crypto++ <http://www.cryptopp.com/>.
* The SHA-256 code in Crypto++ was written by Kevin Springle and Wei Dai.
*/
/*
* Author: Lasse Collin
*
* This file has been put into the public domain.
* You can do whatever you want with this file.
*/
#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 as an 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)
/*
* MSVC versions older than 2013 have no C99 support, and
* thus they cannot be used to compile liblzma. Using an
* existing liblzma.dll with old MSVC can work though(*),
* but we need to define the required standard integer
* types here in a MSVC-specific way.
*
* (*) If you do this, the existing liblzma.dll probably uses
* a different runtime library than your MSVC-built
* application. Mixing runtimes is generally bad, but
* in this case it should work as long as you avoid
* the few rarely-needed liblzma functions that allocate
* memory and expect the caller to free it using free().
*/
# if defined(_WIN32) && defined(_MSC_VER) && _MSC_VER < 1800
typedef unsigned __int8 uint8_t;
typedef unsigned __int32 uint32_t;
typedef unsigned __int64 uint64_t;
# else
/* Use the standard inttypes.h. */
# ifdef __cplusplus
/*
* C99 sections 7.18.2 and 7.18.4 specify
* that 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>
# endif
/*
* 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
# if defined(_WIN32) && defined(_MSC_VER)
# define UINT32_C(n) n ## UI32
# else
# define UINT32_C(n) n ## U
# endif
# endif
# ifndef UINT64_C
# if defined(_WIN32) && defined(_MSC_VER)
# define UINT64_C(n) n ## UI64
# else
/* 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
# 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 */
/******************
* LZMA_API macro *
******************/
/*
* Some systems require that the functions and function pointers are
* declared specially in the headers. LZMA_API_IMPORT is for importing
* symbols and LZMA_API_CALL is to specify the calling convention.
*
* By default it is assumed that the application will link dynamically
* against liblzma. #define LZMA_API_STATIC in your application if you
* want to link against static liblzma. If you don't care about portability
* to operating systems like Windows, or at least don't care about linking
* against static liblzma on them, don't worry about LZMA_API_STATIC. That
* is, most developers will never need to use LZMA_API_STATIC.
*
* The GCC variants are a special case on Windows (Cygwin and MinGW).
* We rely on GCC doing the right thing with its auto-import feature,
* and thus don't use __declspec(dllimport). This way developers don't
* need to worry about LZMA_API_STATIC. Also the calling convention is
* omitted on Cygwin but not on MinGW.
*/
#ifndef LZMA_API_IMPORT
# if !defined(LZMA_API_STATIC) && defined(_WIN32) && !defined(__GNUC__)
# define LZMA_API_IMPORT __declspec(dllimport)
# else
# define LZMA_API_IMPORT
# endif
#endif
#ifndef LZMA_API_CALL
# if defined(_WIN32) && !defined(__CYGWIN__)
# define LZMA_API_CALL __cdecl
# else
# define LZMA_API_CALL
# endif
#endif
#ifndef LZMA_API
# define LZMA_API(type) LZMA_API_IMPORT type LZMA_API_CALL
#endif
/***********
* nothrow *
***********/
/*
* None of the functions in liblzma may throw an exception. Even
* the functions that use callback functions won't throw exceptions,
* because liblzma would break if a callback function threw an exception.
*/
#ifndef lzma_nothrow
# if defined(__cplusplus)
# define lzma_nothrow throw()
# elif __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 3)
# define lzma_nothrow __attribute__((__nothrow__))
# else
# define lzma_nothrow
# endif
#endif
/********************
* GNU C extensions *
********************/
/*
* GNU C 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
/* 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
#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/base.h"
#include "lzma/vli.h"
#include "lzma/check.h"
/* Filters */
#include "lzma/filter.h"
#include "lzma/bcj.h"
#include "lzma/delta.h"
#include "lzma/lzma12.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"
/* Hardware information */
#include "lzma/hardware.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 */