Add an unpatched version of xz, XZ Utils, to /trunk/deps/third_party

xz/src/common/sysdefs.h

+///////////////////////////////////////////////////////////////////////////////
+//
+/// \file       sysdefs.h
+/// \brief      Common includes, definitions, system-specific things etc.
+///
+/// This file is used also by the lzma command line tool, that's why this
+/// file is separate from common.h.
+//
+//  Author:     Lasse Collin
+//
+//  This file has been put into the public domain.
+//  You can do whatever you want with this file.
+//
+///////////////////////////////////////////////////////////////////////////////
+
+#ifndef LZMA_SYSDEFS_H
+#define LZMA_SYSDEFS_H
+
+//////////////
+// Includes //
+//////////////
+
+#ifdef HAVE_CONFIG_H
+#       include <config.h>
+#endif
+
+// size_t and NULL
+#include <stddef.h>
+
+#ifdef HAVE_INTTYPES_H
+#       include <inttypes.h>
+#endif
+
+// C99 says that inttypes.h always includes stdint.h, but some systems
+// don't do that, and require including stdint.h separately.
+#ifdef HAVE_STDINT_H
+#       include <stdint.h>
+#endif
+
+// Some pre-C99 systems have SIZE_MAX in limits.h instead of stdint.h. The
+// limits are also used to figure out some macros missing from pre-C99 systems.
+#ifdef HAVE_LIMITS_H
+#       include <limits.h>
+#endif
+
+// Be more compatible with systems that have non-conforming inttypes.h.
+// We assume that int is 32-bit and that long is either 32-bit or 64-bit.
+// Full Autoconf test could be more correct, but this should work well enough.
+// Note that this duplicates some code from lzma.h, but this is better since
+// we can work without inttypes.h thanks to Autoconf tests.
+#ifndef UINT32_C
+#       if UINT_MAX != 4294967295U
+#               error UINT32_C is not defined and unsigned int is not 32-bit.
+#       endif
+#       define UINT32_C(n) n ## U
+#endif
+#ifndef UINT32_MAX
+#       define UINT32_MAX UINT32_C(4294967295)
+#endif
+#ifndef PRIu32
+#       define PRIu32 "u"
+#endif
+#ifndef PRIX32
+#       define PRIX32 "X"
+#endif
+
+#if ULONG_MAX == 4294967295UL
+#       ifndef UINT64_C
+#               define UINT64_C(n) n ## ULL
+#       endif
+#       ifndef PRIu64
+#               define PRIu64 "llu"
+#       endif
+#       ifndef PRIX64
+#               define PRIX64 "llX"
+#       endif
+#else
+#       ifndef UINT64_C
+#               define UINT64_C(n) n ## UL
+#       endif
+#       ifndef PRIu64
+#               define PRIu64 "lu"
+#       endif
+#       ifndef PRIX64
+#               define PRIX64 "lX"
+#       endif
+#endif
+#ifndef UINT64_MAX
+#       define UINT64_MAX UINT64_C(18446744073709551615)
+#endif
+
+// Interix has broken header files, which typedef size_t to unsigned long,
+// but a few lines later define SIZE_MAX to INT32_MAX.
+#ifdef __INTERIX
+#       undef SIZE_MAX
+#endif
+
+// The code currently assumes that size_t is either 32-bit or 64-bit.
+#ifndef SIZE_MAX
+#       if SIZEOF_SIZE_T == 4
+#               define SIZE_MAX UINT32_MAX
+#       elif SIZEOF_SIZE_T == 8
+#               define SIZE_MAX UINT64_MAX
+#       else
+#               error size_t is not 32-bit or 64-bit
+#       endif
+#endif
+#if SIZE_MAX != UINT32_MAX && SIZE_MAX != UINT64_MAX
+#       error size_t is not 32-bit or 64-bit
+#endif
+
+#include <stdlib.h>
+#include <assert.h>
+
+// Pre-C99 systems lack stdbool.h. All the code in LZMA Utils must be written
+// so that it works with fake bool type, for example:
+//
+//    bool foo = (flags & 0x100) != 0;
+//    bool bar = !!(flags & 0x100);
+//
+// This works with the real C99 bool but breaks with fake bool:
+//
+//    bool baz = (flags & 0x100);
+//
+#ifdef HAVE_STDBOOL_H
+#       include <stdbool.h>
+#else
+#       if ! HAVE__BOOL
+typedef unsigned char _Bool;
+#       endif
+#       define bool _Bool
+#       define false 0
+#       define true 1
+#       define __bool_true_false_are_defined 1
+#endif
+
+// string.h should be enough but let's include strings.h and memory.h too if
+// they exists, since that shouldn't do any harm, but may improve portability.
+#ifdef HAVE_STRING_H
+#       include <string.h>
+#endif
+
+#ifdef HAVE_STRINGS_H
+#       include <strings.h>
+#endif
+
+#ifdef HAVE_MEMORY_H
+#       include <memory.h>
+#endif
+
+
+////////////
+// Macros //
+////////////
+
+#undef memzero
+#define memzero(s, n) memset(s, 0, n)
+
+// NOTE: Avoid using MIN() and MAX(), because even conditionally defining
+// those macros can cause some portability trouble, since on some systems
+// the system headers insist defining their own versions.
+#define my_min(x, y) ((x) < (y) ? (x) : (y))
+#define my_max(x, y) ((x) > (y) ? (x) : (y))
+
+#ifndef ARRAY_SIZE
+#       define ARRAY_SIZE(array) (sizeof(array) / sizeof((array)[0]))
+#endif
+
+#endif