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322ecf93c9
The internal implementation is still using the name "simple". It may need some cleanups, so I look at it later.
230 lines
6.4 KiB
C
230 lines
6.4 KiB
C
/**
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* \file lzma.h
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* \brief The public API of liblzma
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*
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* liblzma is a LZMA compression library with a zlib-like API.
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* liblzma is based on LZMA SDK found from http://7-zip.org/sdk.html.
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*
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* \author Copyright (C) 1999-2006 Igor Pavlov
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* \author Copyright (C) 2007 Lasse Collin
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*/
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#ifndef LZMA_H
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#define LZMA_H
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/*****************************
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* Required standard headers *
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*****************************/
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/**
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* liblzma API headers need some standard types and macros. To allow
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* including lzma.h without requiring the application to include other
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* headers first, lzma.h includes the required standard headers unless
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* they already seem to be included already or if LZMA_MANUAL_HEADERS
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* has been defined.
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*
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* Here's what types and macros are needed and from which headers:
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* - stddef.h: size_t, NULL
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* - stdint.h: uint8_t, uint32_t, uint64_t, UINT32_C(n), uint64_C(n),
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* UINT32_MAX, UINT64_MAX
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*
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* However, inttypes.h is a little more portable than stdint.h, although
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* inttypes.h declares some unneeded things compared to plain stdint.h.
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*
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* The hacks below aren't perfect, specifically they assume that inttypes.h
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* exists and that it typedefs at least uint8_t, uint32_t, and uint64_t,
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* and that, in case of incomplete inttypes.h, unsigned int is 32-bit.
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* If the application already takes care of setting up all the types and
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* macros properly (for example by using gnulib's stdint.h or inttypes.h),
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* we try to detect that the macros are already defined and don't include
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* inttypes.h here again. However, you may define LZMA_MANUAL_HEADERS to
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* force this file to never include any system headers.
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*
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* Some could argue that liblzma API should provide all the required types,
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* for example lzma_uint64, LZMA_UINT64_C(n), and LZMA_UINT64_MAX. This was
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* seen unnecessary mess, since most systems already provide all the necessary
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* types and macros in the standard headers.
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*
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* Note that liblzma API still has lzma_bool, because using stdbool.h would
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* break C89 and C++ programs on many systems. sizeof(bool) in C99 isn't
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* necessarily the same as sizeof(bool) in C++.
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*/
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#ifndef LZMA_MANUAL_HEADERS
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/*
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* I suppose this works portably also in C++. Note that in C++,
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* we need to get size_t into the global namespace.
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*/
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#include <stddef.h>
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/*
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* Skip inttypes.h if we already have all the required macros. If we
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* have the macros, we assume that we have the matching typedefs too.
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*/
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# if !defined(UINT32_C) || !defined(UINT64_C) \
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|| !defined(UINT32_MAX) || !defined(UINT64_MAX)
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# ifdef __cplusplus
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/*
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* C99 sections 7.18.2 and 7.18.4 specify that in C++
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* implementations define the limit and constant
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* macros only if specifically requested. Note that
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* if you want the format macros (PRIu64 etc.) too,
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* you need to define __STDC_FORMAT_MACROS before
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* including lzma.h, since re-including inttypes.h
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* with __STDC_FORMAT_MACROS defined doesn't
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* necessarily work.
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*/
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# ifndef __STDC_LIMIT_MACROS
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# define __STDC_LIMIT_MACROS 1
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# endif
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# ifndef __STDC_CONSTANT_MACROS
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# define __STDC_CONSTANT_MACROS 1
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# endif
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# endif
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# include <inttypes.h>
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/*
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* Some old systems have only the typedefs in inttypes.h, and
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* lack all the macros. For those systems, we need a few more
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* hacks. We assume that unsigned int is 32-bit and unsigned
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* long is either 32-bit or 64-bit. If these hacks aren't
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* enough, the application has to setup the types manually
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* before including lzma.h.
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*/
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# ifndef UINT32_C
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# define UINT32_C(n) n # U
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# endif
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# ifndef UINT64_C
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/* Get ULONG_MAX. */
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# include <limits.h>
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# if ULONG_MAX == 4294967295UL
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# define UINT64_C(n) n ## ULL
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# else
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# define UINT64_C(n) n ## UL
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# endif
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# endif
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# ifndef UINT32_MAX
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# define UINT32_MAX (UINT32_C(4294967295))
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# endif
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# ifndef UINT64_MAX
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# define UINT64_MAX (UINT64_C(18446744073709551615))
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# endif
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# endif
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#endif /* ifdef LZMA_MANUAL_HEADERS */
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/********************
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* GNU C extensions *
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********************/
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/*
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* GNU C extensions are used conditionally in the public API. It doesn't
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* break anything if these are sometimes enabled and sometimes not, only
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* affects warnings and optimizations.
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*/
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#if __GNUC__ >= 3
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# ifndef lzma_attribute
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# define lzma_attribute(attr) __attribute__(attr)
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# endif
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# ifndef lzma_restrict
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# define lzma_restrict __restrict__
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# endif
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/* warn_unused_result was added in GCC 3.4. */
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# ifndef lzma_attr_warn_unused_result
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# if __GNUC__ == 3 && __GNUC_MINOR__ < 4
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# define lzma_attr_warn_unused_result
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# endif
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# endif
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#else
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# ifndef lzma_attribute
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# define lzma_attribute(attr)
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# endif
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# ifndef lzma_restrict
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# if __STDC_VERSION__ >= 199901L
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# define lzma_restrict restrict
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# else
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# define lzma_restrict
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# endif
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# endif
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#endif
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#ifndef lzma_attr_pure
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# define lzma_attr_pure lzma_attribute((__pure__))
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#endif
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#ifndef lzma_attr_const
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# define lzma_attr_const lzma_attribute((__const__))
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#endif
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#ifndef lzma_attr_warn_unused_result
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# define lzma_attr_warn_unused_result \
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lzma_attribute((__warn_unused_result__))
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#endif
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/**************
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* Subheaders *
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**************/
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#ifdef __cplusplus
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extern "C" {
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#endif
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/*
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* Subheaders check that this is defined. It is to prevent including
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* them directly from applications.
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*/
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#define LZMA_H_INTERNAL 1
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/* Basic features */
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#include "lzma/version.h"
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#include "lzma/base.h"
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#include "lzma/vli.h"
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#include "lzma/check.h"
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/* Filters */
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#include "lzma/filter.h"
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#include "lzma/subblock.h"
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#include "lzma/bcj.h"
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#include "lzma/delta.h"
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#include "lzma/lzma.h"
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/* Container formats */
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#include "lzma/container.h"
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/* Advanced features */
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#include "lzma/stream_flags.h"
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#include "lzma/block.h"
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#include "lzma/index.h"
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#include "lzma/index_hash.h"
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/*
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* All subheaders included. Undefine LZMA_H_INTERNAL to prevent applications
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* re-including the subheaders.
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*/
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#undef LZMA_H_INTERNAL
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#ifdef __cplusplus
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}
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#endif
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#endif /* ifndef LZMA_H */
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