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e61d85e082
The non-standard ones from msvcrt.dll appear to work most of the time with XZ Utils, but there are some corner cases where things may go very wrong. So it's good to use the better replacements provided by MinGW(-w64) runtime.
174 lines
4.2 KiB
C
174 lines
4.2 KiB
C
///////////////////////////////////////////////////////////////////////////////
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//
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/// \file sysdefs.h
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/// \brief Common includes, definitions, system-specific things etc.
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///
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/// This file is used also by the lzma command line tool, that's why this
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/// file is separate from common.h.
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//
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// Author: Lasse Collin
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//
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// This file has been put into the public domain.
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// You can do whatever you want with this file.
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//
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///////////////////////////////////////////////////////////////////////////////
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#ifndef LZMA_SYSDEFS_H
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#define LZMA_SYSDEFS_H
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//////////////
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// Includes //
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//////////////
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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// Get standard-compliant stdio functions under MinGW and MinGW-w64.
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#ifdef __MINGW32__
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# define __USE_MINGW_ANSI_STDIO 1
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#endif
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// size_t and NULL
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#include <stddef.h>
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#ifdef HAVE_INTTYPES_H
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# include <inttypes.h>
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#endif
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// C99 says that inttypes.h always includes stdint.h, but some systems
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// don't do that, and require including stdint.h separately.
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#ifdef HAVE_STDINT_H
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# include <stdint.h>
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#endif
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// Some pre-C99 systems have SIZE_MAX in limits.h instead of stdint.h. The
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// limits are also used to figure out some macros missing from pre-C99 systems.
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#ifdef HAVE_LIMITS_H
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# include <limits.h>
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#endif
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// Be more compatible with systems that have non-conforming inttypes.h.
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// We assume that int is 32-bit and that long is either 32-bit or 64-bit.
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// Full Autoconf test could be more correct, but this should work well enough.
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// Note that this duplicates some code from lzma.h, but this is better since
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// we can work without inttypes.h thanks to Autoconf tests.
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#ifndef UINT32_C
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# if UINT_MAX != 4294967295U
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# error UINT32_C is not defined and unsigned int is not 32-bit.
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# endif
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# define UINT32_C(n) n ## U
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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 PRIu32
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# define PRIu32 "u"
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#endif
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#ifndef PRIX32
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# define PRIX32 "X"
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#endif
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#if ULONG_MAX == 4294967295UL
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# ifndef UINT64_C
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# define UINT64_C(n) n ## ULL
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# endif
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# ifndef PRIu64
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# define PRIu64 "llu"
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# endif
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# ifndef PRIX64
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# define PRIX64 "llX"
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# endif
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#else
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# ifndef UINT64_C
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# define UINT64_C(n) n ## UL
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# endif
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# ifndef PRIu64
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# define PRIu64 "lu"
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# endif
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# ifndef PRIX64
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# define PRIX64 "lX"
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# endif
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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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// Interix has broken header files, which typedef size_t to unsigned long,
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// but a few lines later define SIZE_MAX to INT32_MAX.
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#ifdef __INTERIX
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# undef SIZE_MAX
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#endif
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// The code currently assumes that size_t is either 32-bit or 64-bit.
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#ifndef SIZE_MAX
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# if SIZEOF_SIZE_T == 4
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# define SIZE_MAX UINT32_MAX
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# elif SIZEOF_SIZE_T == 8
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# define SIZE_MAX UINT64_MAX
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# else
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# error size_t is not 32-bit or 64-bit
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# endif
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#endif
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#if SIZE_MAX != UINT32_MAX && SIZE_MAX != UINT64_MAX
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# error size_t is not 32-bit or 64-bit
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#endif
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#include <stdlib.h>
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#include <assert.h>
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// Pre-C99 systems lack stdbool.h. All the code in LZMA Utils must be written
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// so that it works with fake bool type, for example:
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//
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// bool foo = (flags & 0x100) != 0;
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// bool bar = !!(flags & 0x100);
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//
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// This works with the real C99 bool but breaks with fake bool:
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//
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// bool baz = (flags & 0x100);
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//
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#ifdef HAVE_STDBOOL_H
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# include <stdbool.h>
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#else
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# if ! HAVE__BOOL
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typedef unsigned char _Bool;
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# endif
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# define bool _Bool
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# define false 0
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# define true 1
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# define __bool_true_false_are_defined 1
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#endif
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// string.h should be enough but let's include strings.h and memory.h too if
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// they exists, since that shouldn't do any harm, but may improve portability.
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#ifdef HAVE_STRING_H
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# include <string.h>
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#endif
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#ifdef HAVE_STRINGS_H
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# include <strings.h>
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#endif
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#ifdef HAVE_MEMORY_H
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# include <memory.h>
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#endif
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////////////
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// Macros //
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////////////
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#undef memzero
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#define memzero(s, n) memset(s, 0, n)
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// NOTE: Avoid using MIN() and MAX(), because even conditionally defining
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// those macros can cause some portability trouble, since on some systems
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// the system headers insist defining their own versions.
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#define my_min(x, y) ((x) < (y) ? (x) : (y))
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#define my_max(x, y) ((x) > (y) ? (x) : (y))
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#ifndef ARRAY_SIZE
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# define ARRAY_SIZE(array) (sizeof(array) / sizeof((array)[0]))
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#endif
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#endif
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