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2936 lines
70 KiB
2936 lines
70 KiB
/* minilzo.c -- mini subset of the LZO real-time data compression library
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This file is part of the LZO real-time data compression library.
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Copyright (C) 2002 Markus Franz Xaver Johannes Oberhumer
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Copyright (C) 2001 Markus Franz Xaver Johannes Oberhumer
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Copyright (C) 2000 Markus Franz Xaver Johannes Oberhumer
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Copyright (C) 1999 Markus Franz Xaver Johannes Oberhumer
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Copyright (C) 1998 Markus Franz Xaver Johannes Oberhumer
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Copyright (C) 1997 Markus Franz Xaver Johannes Oberhumer
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Copyright (C) 1996 Markus Franz Xaver Johannes Oberhumer
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All Rights Reserved.
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The LZO library is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of
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the License, or (at your option) any later version.
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The LZO 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with the LZO library; see the file COPYING.
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If not, write to the Free Software Foundation, Inc.,
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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Markus F.X.J. Oberhumer
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<markus@oberhumer.com>
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http://www.oberhumer.com/opensource/lzo/
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*/
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/*
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* NOTE:
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* the full LZO package can be found at
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* http://www.oberhumer.com/opensource/lzo/
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*/
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#define __LZO_IN_MINILZO
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#define LZO_BUILD
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#ifdef MINILZO_HAVE_CONFIG_H
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# include <config.h>
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#endif
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#undef LZO_HAVE_CONFIG_H
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#include "minilzo.h"
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#if !defined(MINILZO_VERSION) || (MINILZO_VERSION != 0x1080)
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# error "version mismatch in miniLZO source files"
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#endif
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#ifdef MINILZO_HAVE_CONFIG_H
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# define LZO_HAVE_CONFIG_H
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#endif
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#if !defined(LZO_NO_SYS_TYPES_H)
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# include <sys/types.h>
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#endif
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#include <stdio.h>
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#ifndef __LZO_CONF_H
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#define __LZO_CONF_H
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#if !defined(__LZO_IN_MINILZO)
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# ifndef __LZOCONF_H
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# include <lzoconf.h>
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# endif
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#endif
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#if defined(__BOUNDS_CHECKING_ON)
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# include <unchecked.h>
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#else
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# define BOUNDS_CHECKING_OFF_DURING(stmt) stmt
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# define BOUNDS_CHECKING_OFF_IN_EXPR(expr) (expr)
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#endif
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#if !defined(LZO_HAVE_CONFIG_H)
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# include <stddef.h>
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# include <string.h>
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# if !defined(NO_STDLIB_H)
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# include <stdlib.h>
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# endif
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# define HAVE_MEMCMP
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# define HAVE_MEMCPY
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# define HAVE_MEMMOVE
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# define HAVE_MEMSET
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#else
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# include <sys/types.h>
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# if defined(HAVE_STDDEF_H)
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# include <stddef.h>
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# endif
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# if defined(STDC_HEADERS)
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# include <string.h>
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# include <stdlib.h>
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# endif
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#endif
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#if defined(__LZO_DOS16) || defined(__LZO_WIN16)
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# define HAVE_MALLOC_H
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# define HAVE_HALLOC
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#endif
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#undef NDEBUG
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#if !defined(LZO_DEBUG)
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# define NDEBUG
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#endif
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#if defined(LZO_DEBUG) || !defined(NDEBUG)
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# if !defined(NO_STDIO_H)
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# include <stdio.h>
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# endif
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#endif
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#include <assert.h>
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#if !defined(LZO_COMPILE_TIME_ASSERT)
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# define LZO_COMPILE_TIME_ASSERT(expr) \
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{ typedef int __lzo_compile_time_assert_fail[1 - 2 * !(expr)]; }
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#endif
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#if !defined(LZO_UNUSED)
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# if 1
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# define LZO_UNUSED(var) ((void)&var)
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# elif 0
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# define LZO_UNUSED(var) { typedef int __lzo_unused[sizeof(var) ? 2 : 1]; }
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# else
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# define LZO_UNUSED(parm) (parm = parm)
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# endif
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#endif
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#if !defined(__inline__) && !defined(__GNUC__)
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# if defined(__cplusplus)
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# define __inline__ inline
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# else
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# define __inline__
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# endif
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#endif
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#if defined(NO_MEMCMP)
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# undef HAVE_MEMCMP
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#endif
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#if !defined(HAVE_MEMCMP)
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# undef memcmp
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# define memcmp lzo_memcmp
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#endif
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#if !defined(HAVE_MEMCPY)
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# undef memcpy
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# define memcpy lzo_memcpy
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#endif
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#if !defined(HAVE_MEMMOVE)
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# undef memmove
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# define memmove lzo_memmove
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#endif
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#if !defined(HAVE_MEMSET)
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# undef memset
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# define memset lzo_memset
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#endif
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#if 0
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# define LZO_BYTE(x) ((unsigned char) (x))
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#else
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# define LZO_BYTE(x) ((unsigned char) ((x) & 0xff))
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#endif
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#define LZO_MAX(a,b) ((a) >= (b) ? (a) : (b))
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#define LZO_MIN(a,b) ((a) <= (b) ? (a) : (b))
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#define LZO_MAX3(a,b,c) ((a) >= (b) ? LZO_MAX(a,c) : LZO_MAX(b,c))
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#define LZO_MIN3(a,b,c) ((a) <= (b) ? LZO_MIN(a,c) : LZO_MIN(b,c))
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#define lzo_sizeof(type) ((lzo_uint) (sizeof(type)))
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#define LZO_HIGH(array) ((lzo_uint) (sizeof(array)/sizeof(*(array))))
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#define LZO_SIZE(bits) (1u << (bits))
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#define LZO_MASK(bits) (LZO_SIZE(bits) - 1)
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#define LZO_LSIZE(bits) (1ul << (bits))
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#define LZO_LMASK(bits) (LZO_LSIZE(bits) - 1)
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#define LZO_USIZE(bits) ((lzo_uint) 1 << (bits))
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#define LZO_UMASK(bits) (LZO_USIZE(bits) - 1)
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#define LZO_STYPE_MAX(b) (((1l << (8*(b)-2)) - 1l) + (1l << (8*(b)-2)))
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#define LZO_UTYPE_MAX(b) (((1ul << (8*(b)-1)) - 1ul) + (1ul << (8*(b)-1)))
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#if !defined(SIZEOF_UNSIGNED)
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# if (UINT_MAX == 0xffff)
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# define SIZEOF_UNSIGNED 2
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# elif (UINT_MAX == LZO_0xffffffffL)
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# define SIZEOF_UNSIGNED 4
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# elif (UINT_MAX >= LZO_0xffffffffL)
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# define SIZEOF_UNSIGNED 8
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# else
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# error "SIZEOF_UNSIGNED"
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# endif
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#endif
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#if !defined(SIZEOF_UNSIGNED_LONG)
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# if (ULONG_MAX == LZO_0xffffffffL)
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# define SIZEOF_UNSIGNED_LONG 4
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# elif (ULONG_MAX >= LZO_0xffffffffL)
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# define SIZEOF_UNSIGNED_LONG 8
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# else
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# error "SIZEOF_UNSIGNED_LONG"
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# endif
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#endif
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#if !defined(SIZEOF_SIZE_T)
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# define SIZEOF_SIZE_T SIZEOF_UNSIGNED
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#endif
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#if !defined(SIZE_T_MAX)
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# define SIZE_T_MAX LZO_UTYPE_MAX(SIZEOF_SIZE_T)
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#endif
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#if 1 && defined(__LZO_i386) && (UINT_MAX == LZO_0xffffffffL)
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# if !defined(LZO_UNALIGNED_OK_2) && (USHRT_MAX == 0xffff)
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# define LZO_UNALIGNED_OK_2
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# endif
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# if !defined(LZO_UNALIGNED_OK_4) && (LZO_UINT32_MAX == LZO_0xffffffffL)
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# define LZO_UNALIGNED_OK_4
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# endif
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#endif
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#if defined(LZO_UNALIGNED_OK_2) || defined(LZO_UNALIGNED_OK_4)
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# if !defined(LZO_UNALIGNED_OK)
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# define LZO_UNALIGNED_OK
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# endif
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#endif
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#if defined(__LZO_NO_UNALIGNED)
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# undef LZO_UNALIGNED_OK
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# undef LZO_UNALIGNED_OK_2
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# undef LZO_UNALIGNED_OK_4
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#endif
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#if defined(LZO_UNALIGNED_OK_2) && (USHRT_MAX != 0xffff)
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# error "LZO_UNALIGNED_OK_2 must not be defined on this system"
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#endif
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#if defined(LZO_UNALIGNED_OK_4) && (LZO_UINT32_MAX != LZO_0xffffffffL)
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# error "LZO_UNALIGNED_OK_4 must not be defined on this system"
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#endif
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#if defined(__LZO_NO_ALIGNED)
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# undef LZO_ALIGNED_OK_4
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#endif
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#if defined(LZO_ALIGNED_OK_4) && (LZO_UINT32_MAX != LZO_0xffffffffL)
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# error "LZO_ALIGNED_OK_4 must not be defined on this system"
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#endif
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#define LZO_LITTLE_ENDIAN 1234
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#define LZO_BIG_ENDIAN 4321
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#define LZO_PDP_ENDIAN 3412
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#if !defined(LZO_BYTE_ORDER)
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# if defined(MFX_BYTE_ORDER)
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# define LZO_BYTE_ORDER MFX_BYTE_ORDER
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# elif defined(__LZO_i386)
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# define LZO_BYTE_ORDER LZO_LITTLE_ENDIAN
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# elif defined(BYTE_ORDER)
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# define LZO_BYTE_ORDER BYTE_ORDER
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# elif defined(__BYTE_ORDER)
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# define LZO_BYTE_ORDER __BYTE_ORDER
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# endif
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#endif
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#if defined(LZO_BYTE_ORDER)
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# if (LZO_BYTE_ORDER != LZO_LITTLE_ENDIAN) && \
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(LZO_BYTE_ORDER != LZO_BIG_ENDIAN)
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# error "invalid LZO_BYTE_ORDER"
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# endif
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#endif
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#if defined(LZO_UNALIGNED_OK) && !defined(LZO_BYTE_ORDER)
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# error "LZO_BYTE_ORDER is not defined"
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#endif
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#define LZO_OPTIMIZE_GNUC_i386_IS_BUGGY
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#if defined(NDEBUG) && !defined(LZO_DEBUG) && !defined(__LZO_CHECKER)
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# if defined(__GNUC__) && defined(__i386__)
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# if !defined(LZO_OPTIMIZE_GNUC_i386_IS_BUGGY)
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# define LZO_OPTIMIZE_GNUC_i386
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# endif
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# endif
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#endif
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__LZO_EXTERN_C int __lzo_init_done;
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__LZO_EXTERN_C const lzo_byte __lzo_copyright[];
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LZO_EXTERN(const lzo_byte *) lzo_copyright(void);
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__LZO_EXTERN_C const lzo_uint32 _lzo_crc32_table[256];
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#define _LZO_STRINGIZE(x) #x
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#define _LZO_MEXPAND(x) _LZO_STRINGIZE(x)
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#define _LZO_CONCAT2(a,b) a ## b
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#define _LZO_CONCAT3(a,b,c) a ## b ## c
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#define _LZO_CONCAT4(a,b,c,d) a ## b ## c ## d
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#define _LZO_CONCAT5(a,b,c,d,e) a ## b ## c ## d ## e
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#define _LZO_ECONCAT2(a,b) _LZO_CONCAT2(a,b)
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#define _LZO_ECONCAT3(a,b,c) _LZO_CONCAT3(a,b,c)
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#define _LZO_ECONCAT4(a,b,c,d) _LZO_CONCAT4(a,b,c,d)
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#define _LZO_ECONCAT5(a,b,c,d,e) _LZO_CONCAT5(a,b,c,d,e)
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#if 0
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#define __LZO_IS_COMPRESS_QUERY(i,il,o,ol,w) ((lzo_voidp)(o) == (w))
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#define __LZO_QUERY_COMPRESS(i,il,o,ol,w,n,s) \
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(*ol = (n)*(s), LZO_E_OK)
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#define __LZO_IS_DECOMPRESS_QUERY(i,il,o,ol,w) ((lzo_voidp)(o) == (w))
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#define __LZO_QUERY_DECOMPRESS(i,il,o,ol,w,n,s) \
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(*ol = (n)*(s), LZO_E_OK)
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#define __LZO_IS_OPTIMIZE_QUERY(i,il,o,ol,w) ((lzo_voidp)(o) == (w))
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#define __LZO_QUERY_OPTIMIZE(i,il,o,ol,w,n,s) \
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(*ol = (n)*(s), LZO_E_OK)
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#endif
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#ifndef __LZO_PTR_H
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#define __LZO_PTR_H
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if defined(__LZO_DOS16) || defined(__LZO_WIN16)
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# include <dos.h>
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# if 1 && defined(__WATCOMC__)
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# include <i86.h>
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__LZO_EXTERN_C unsigned char _HShift;
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# define __LZO_HShift _HShift
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# elif 1 && defined(_MSC_VER)
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__LZO_EXTERN_C unsigned short __near _AHSHIFT;
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# define __LZO_HShift ((unsigned) &_AHSHIFT)
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# elif defined(__LZO_WIN16)
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# define __LZO_HShift 3
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# else
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# define __LZO_HShift 12
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# endif
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# if !defined(_FP_SEG) && defined(FP_SEG)
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# define _FP_SEG FP_SEG
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# endif
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# if !defined(_FP_OFF) && defined(FP_OFF)
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# define _FP_OFF FP_OFF
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# endif
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#endif
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#if !defined(lzo_ptrdiff_t)
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# if (UINT_MAX >= LZO_0xffffffffL)
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typedef ptrdiff_t lzo_ptrdiff_t;
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# else
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typedef long lzo_ptrdiff_t;
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# endif
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#endif
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#if !defined(__LZO_HAVE_PTR_T)
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# if defined(lzo_ptr_t)
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# define __LZO_HAVE_PTR_T
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# endif
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#endif
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#if !defined(__LZO_HAVE_PTR_T)
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# if defined(SIZEOF_CHAR_P) && defined(SIZEOF_UNSIGNED_LONG)
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# if (SIZEOF_CHAR_P == SIZEOF_UNSIGNED_LONG)
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typedef unsigned long lzo_ptr_t;
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typedef long lzo_sptr_t;
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# define __LZO_HAVE_PTR_T
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# endif
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# endif
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#endif
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#if !defined(__LZO_HAVE_PTR_T)
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# if defined(SIZEOF_CHAR_P) && defined(SIZEOF_UNSIGNED)
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# if (SIZEOF_CHAR_P == SIZEOF_UNSIGNED)
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typedef unsigned int lzo_ptr_t;
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typedef int lzo_sptr_t;
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# define __LZO_HAVE_PTR_T
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# endif
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# endif
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#endif
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#if !defined(__LZO_HAVE_PTR_T)
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# if defined(SIZEOF_CHAR_P) && defined(SIZEOF_UNSIGNED_SHORT)
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# if (SIZEOF_CHAR_P == SIZEOF_UNSIGNED_SHORT)
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typedef unsigned short lzo_ptr_t;
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typedef short lzo_sptr_t;
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# define __LZO_HAVE_PTR_T
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# endif
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# endif
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#endif
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#if !defined(__LZO_HAVE_PTR_T)
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# if defined(LZO_HAVE_CONFIG_H) || defined(SIZEOF_CHAR_P)
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# error "no suitable type for lzo_ptr_t"
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# else
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typedef unsigned long lzo_ptr_t;
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typedef long lzo_sptr_t;
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# define __LZO_HAVE_PTR_T
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# endif
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#endif
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#if defined(__LZO_DOS16) || defined(__LZO_WIN16)
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#define PTR(a) ((lzo_bytep) (a))
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#define PTR_ALIGNED_4(a) ((_FP_OFF(a) & 3) == 0)
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#define PTR_ALIGNED2_4(a,b) (((_FP_OFF(a) | _FP_OFF(b)) & 3) == 0)
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#else
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#define PTR(a) ((lzo_ptr_t) (a))
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#define PTR_LINEAR(a) PTR(a)
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#define PTR_ALIGNED_4(a) ((PTR_LINEAR(a) & 3) == 0)
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#define PTR_ALIGNED_8(a) ((PTR_LINEAR(a) & 7) == 0)
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#define PTR_ALIGNED2_4(a,b) (((PTR_LINEAR(a) | PTR_LINEAR(b)) & 3) == 0)
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#define PTR_ALIGNED2_8(a,b) (((PTR_LINEAR(a) | PTR_LINEAR(b)) & 7) == 0)
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#endif
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#define PTR_LT(a,b) (PTR(a) < PTR(b))
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#define PTR_GE(a,b) (PTR(a) >= PTR(b))
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#define PTR_DIFF(a,b) ((lzo_ptrdiff_t) (PTR(a) - PTR(b)))
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#define pd(a,b) ((lzo_uint) ((a)-(b)))
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LZO_EXTERN(lzo_ptr_t)
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__lzo_ptr_linear(const lzo_voidp ptr);
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typedef union
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{
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char a_char;
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unsigned char a_uchar;
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short a_short;
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unsigned short a_ushort;
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int a_int;
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unsigned int a_uint;
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long a_long;
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unsigned long a_ulong;
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lzo_int a_lzo_int;
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lzo_uint a_lzo_uint;
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lzo_int32 a_lzo_int32;
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lzo_uint32 a_lzo_uint32;
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ptrdiff_t a_ptrdiff_t;
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lzo_ptrdiff_t a_lzo_ptrdiff_t;
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lzo_ptr_t a_lzo_ptr_t;
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lzo_voidp a_lzo_voidp;
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void * a_void_p;
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lzo_bytep a_lzo_bytep;
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lzo_bytepp a_lzo_bytepp;
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lzo_uintp a_lzo_uintp;
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lzo_uint * a_lzo_uint_p;
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lzo_uint32p a_lzo_uint32p;
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lzo_uint32 * a_lzo_uint32_p;
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unsigned char * a_uchar_p;
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char * a_char_p;
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}
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lzo_full_align_t;
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#ifdef __cplusplus
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}
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#endif
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#endif
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#define LZO_DETERMINISTIC
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#define LZO_DICT_USE_PTR
|
|
#if defined(__LZO_DOS16) || defined(__LZO_WIN16) || defined(__LZO_STRICT_16BIT)
|
|
# undef LZO_DICT_USE_PTR
|
|
#endif
|
|
|
|
#if defined(LZO_DICT_USE_PTR)
|
|
# define lzo_dict_t const lzo_bytep
|
|
# define lzo_dict_p lzo_dict_t __LZO_MMODEL *
|
|
#else
|
|
# define lzo_dict_t lzo_uint
|
|
# define lzo_dict_p lzo_dict_t __LZO_MMODEL *
|
|
#endif
|
|
|
|
#if !defined(lzo_moff_t)
|
|
#define lzo_moff_t lzo_uint
|
|
#endif
|
|
|
|
#endif
|
|
|
|
LZO_PUBLIC(lzo_ptr_t)
|
|
__lzo_ptr_linear(const lzo_voidp ptr)
|
|
{
|
|
lzo_ptr_t p;
|
|
|
|
#if defined(__LZO_DOS16) || defined(__LZO_WIN16)
|
|
p = (((lzo_ptr_t)(_FP_SEG(ptr))) << (16 - __LZO_HShift)) + (_FP_OFF(ptr));
|
|
#else
|
|
p = PTR_LINEAR(ptr);
|
|
#endif
|
|
|
|
return p;
|
|
}
|
|
|
|
LZO_PUBLIC(unsigned)
|
|
__lzo_align_gap(const lzo_voidp ptr, lzo_uint size)
|
|
{
|
|
lzo_ptr_t p, s, n;
|
|
|
|
assert(size > 0);
|
|
|
|
p = __lzo_ptr_linear(ptr);
|
|
s = (lzo_ptr_t) (size - 1);
|
|
#if 0
|
|
assert((size & (size - 1)) == 0);
|
|
n = ((p + s) & ~s) - p;
|
|
#else
|
|
n = (((p + s) / size) * size) - p;
|
|
#endif
|
|
|
|
assert((long)n >= 0);
|
|
assert(n <= s);
|
|
|
|
return (unsigned)n;
|
|
}
|
|
|
|
#ifndef __LZO_UTIL_H
|
|
#define __LZO_UTIL_H
|
|
|
|
#ifndef __LZO_CONF_H
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
#if 1 && defined(HAVE_MEMCPY)
|
|
#if !defined(__LZO_DOS16) && !defined(__LZO_WIN16)
|
|
|
|
#define MEMCPY8_DS(dest,src,len) \
|
|
memcpy(dest,src,len); \
|
|
dest += len; \
|
|
src += len
|
|
|
|
#endif
|
|
#endif
|
|
|
|
#if 0 && !defined(MEMCPY8_DS)
|
|
|
|
#define MEMCPY8_DS(dest,src,len) \
|
|
{ do { \
|
|
*dest++ = *src++; \
|
|
*dest++ = *src++; \
|
|
*dest++ = *src++; \
|
|
*dest++ = *src++; \
|
|
*dest++ = *src++; \
|
|
*dest++ = *src++; \
|
|
*dest++ = *src++; \
|
|
*dest++ = *src++; \
|
|
len -= 8; \
|
|
} while (len > 0); }
|
|
|
|
#endif
|
|
|
|
#if !defined(MEMCPY8_DS)
|
|
|
|
#define MEMCPY8_DS(dest,src,len) \
|
|
{ register lzo_uint __l = (len) / 8; \
|
|
do { \
|
|
*dest++ = *src++; \
|
|
*dest++ = *src++; \
|
|
*dest++ = *src++; \
|
|
*dest++ = *src++; \
|
|
*dest++ = *src++; \
|
|
*dest++ = *src++; \
|
|
*dest++ = *src++; \
|
|
*dest++ = *src++; \
|
|
} while (--__l > 0); }
|
|
|
|
#endif
|
|
|
|
#define MEMCPY_DS(dest,src,len) \
|
|
do *dest++ = *src++; \
|
|
while (--len > 0)
|
|
|
|
#define MEMMOVE_DS(dest,src,len) \
|
|
do *dest++ = *src++; \
|
|
while (--len > 0)
|
|
|
|
#if 0 && defined(LZO_OPTIMIZE_GNUC_i386)
|
|
|
|
#define BZERO8_PTR(s,l,n) \
|
|
__asm__ __volatile__( \
|
|
"movl %0,%%eax \n" \
|
|
"movl %1,%%edi \n" \
|
|
"movl %2,%%ecx \n" \
|
|
"cld \n" \
|
|
"rep \n" \
|
|
"stosl %%eax,(%%edi) \n" \
|
|
: \
|
|
:"g" (0),"g" (s),"g" (n) \
|
|
:"eax","edi","ecx", "memory", "cc" \
|
|
)
|
|
|
|
#elif (LZO_UINT_MAX <= SIZE_T_MAX) && defined(HAVE_MEMSET)
|
|
|
|
#if 1
|
|
#define BZERO8_PTR(s,l,n) memset((s),0,(lzo_uint)(l)*(n))
|
|
#else
|
|
#define BZERO8_PTR(s,l,n) memset((lzo_voidp)(s),0,(lzo_uint)(l)*(n))
|
|
#endif
|
|
|
|
#else
|
|
|
|
#define BZERO8_PTR(s,l,n) \
|
|
lzo_memset((lzo_voidp)(s),0,(lzo_uint)(l)*(n))
|
|
|
|
#endif
|
|
|
|
#if 0
|
|
#if defined(__GNUC__) && defined(__i386__)
|
|
|
|
unsigned char lzo_rotr8(unsigned char value, int shift);
|
|
extern __inline__ unsigned char lzo_rotr8(unsigned char value, int shift)
|
|
{
|
|
unsigned char result;
|
|
|
|
__asm__ __volatile__ ("movb %b1, %b0; rorb %b2, %b0"
|
|
: "=a"(result) : "g"(value), "c"(shift));
|
|
return result;
|
|
}
|
|
|
|
unsigned short lzo_rotr16(unsigned short value, int shift);
|
|
extern __inline__ unsigned short lzo_rotr16(unsigned short value, int shift)
|
|
{
|
|
unsigned short result;
|
|
|
|
__asm__ __volatile__ ("movw %b1, %b0; rorw %b2, %b0"
|
|
: "=a"(result) : "g"(value), "c"(shift));
|
|
return result;
|
|
}
|
|
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif
|
|
|
|
LZO_PUBLIC(lzo_bool)
|
|
lzo_assert(int expr)
|
|
{
|
|
return (expr) ? 1 : 0;
|
|
}
|
|
|
|
/* If you use the LZO library in a product, you *must* keep this
|
|
* copyright string in the executable of your product.
|
|
*/
|
|
|
|
const lzo_byte __lzo_copyright[] =
|
|
#if !defined(__LZO_IN_MINLZO)
|
|
LZO_VERSION_STRING;
|
|
#else
|
|
"\n\n\n"
|
|
"LZO real-time data compression library.\n"
|
|
"Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002 Markus Franz Xaver Johannes Oberhumer\n"
|
|
"<markus.oberhumer@jk.uni-linz.ac.at>\n"
|
|
"http://www.oberhumer.com/opensource/lzo/\n"
|
|
"\n"
|
|
"LZO version: v" LZO_VERSION_STRING ", " LZO_VERSION_DATE "\n"
|
|
"LZO build date: " __DATE__ " " __TIME__ "\n\n"
|
|
"LZO special compilation options:\n"
|
|
#ifdef __cplusplus
|
|
" __cplusplus\n"
|
|
#endif
|
|
#if defined(__PIC__)
|
|
" __PIC__\n"
|
|
#elif defined(__pic__)
|
|
" __pic__\n"
|
|
#endif
|
|
#if (UINT_MAX < LZO_0xffffffffL)
|
|
" 16BIT\n"
|
|
#endif
|
|
#if defined(__LZO_STRICT_16BIT)
|
|
" __LZO_STRICT_16BIT\n"
|
|
#endif
|
|
#if (UINT_MAX > LZO_0xffffffffL)
|
|
" UINT_MAX=" _LZO_MEXPAND(UINT_MAX) "\n"
|
|
#endif
|
|
#if (ULONG_MAX > LZO_0xffffffffL)
|
|
" ULONG_MAX=" _LZO_MEXPAND(ULONG_MAX) "\n"
|
|
#endif
|
|
#if defined(LZO_BYTE_ORDER)
|
|
" LZO_BYTE_ORDER=" _LZO_MEXPAND(LZO_BYTE_ORDER) "\n"
|
|
#endif
|
|
#if defined(LZO_UNALIGNED_OK_2)
|
|
" LZO_UNALIGNED_OK_2\n"
|
|
#endif
|
|
#if defined(LZO_UNALIGNED_OK_4)
|
|
" LZO_UNALIGNED_OK_4\n"
|
|
#endif
|
|
#if defined(LZO_ALIGNED_OK_4)
|
|
" LZO_ALIGNED_OK_4\n"
|
|
#endif
|
|
#if defined(LZO_DICT_USE_PTR)
|
|
" LZO_DICT_USE_PTR\n"
|
|
#endif
|
|
#if defined(__LZO_QUERY_COMPRESS)
|
|
" __LZO_QUERY_COMPRESS\n"
|
|
#endif
|
|
#if defined(__LZO_QUERY_DECOMPRESS)
|
|
" __LZO_QUERY_DECOMPRESS\n"
|
|
#endif
|
|
#if defined(__LZO_IN_MINILZO)
|
|
" __LZO_IN_MINILZO\n"
|
|
#endif
|
|
"\n\n"
|
|
"$Id: LZO " LZO_VERSION_STRING " built " __DATE__ " " __TIME__
|
|
#if defined(__GNUC__) && defined(__VERSION__)
|
|
" by gcc " __VERSION__
|
|
#elif defined(__BORLANDC__)
|
|
" by Borland C " _LZO_MEXPAND(__BORLANDC__)
|
|
#elif defined(_MSC_VER)
|
|
" by Microsoft C " _LZO_MEXPAND(_MSC_VER)
|
|
#elif defined(__PUREC__)
|
|
" by Pure C " _LZO_MEXPAND(__PUREC__)
|
|
#elif defined(__SC__)
|
|
" by Symantec C " _LZO_MEXPAND(__SC__)
|
|
#elif defined(__TURBOC__)
|
|
" by Turbo C " _LZO_MEXPAND(__TURBOC__)
|
|
#elif defined(__WATCOMC__)
|
|
" by Watcom C " _LZO_MEXPAND(__WATCOMC__)
|
|
#endif
|
|
" $\n"
|
|
"$Copyright: LZO (C) 1996, 1997, 1998, 1999, 2000, 2001, 2002 Markus Franz Xaver Johannes Oberhumer $\n";
|
|
#endif
|
|
|
|
LZO_PUBLIC(const lzo_byte *)
|
|
lzo_copyright(void)
|
|
{
|
|
return __lzo_copyright;
|
|
}
|
|
|
|
LZO_PUBLIC(unsigned)
|
|
lzo_version(void)
|
|
{
|
|
return LZO_VERSION;
|
|
}
|
|
|
|
LZO_PUBLIC(const char *)
|
|
lzo_version_string(void)
|
|
{
|
|
return LZO_VERSION_STRING;
|
|
}
|
|
|
|
LZO_PUBLIC(const char *)
|
|
lzo_version_date(void)
|
|
{
|
|
return LZO_VERSION_DATE;
|
|
}
|
|
|
|
LZO_PUBLIC(const lzo_charp)
|
|
_lzo_version_string(void)
|
|
{
|
|
return LZO_VERSION_STRING;
|
|
}
|
|
|
|
LZO_PUBLIC(const lzo_charp)
|
|
_lzo_version_date(void)
|
|
{
|
|
return LZO_VERSION_DATE;
|
|
}
|
|
|
|
#define LZO_BASE 65521u
|
|
#define LZO_NMAX 5552
|
|
|
|
#define LZO_DO1(buf,i) {s1 += buf[i]; s2 += s1;}
|
|
#define LZO_DO2(buf,i) LZO_DO1(buf,i); LZO_DO1(buf,i+1);
|
|
#define LZO_DO4(buf,i) LZO_DO2(buf,i); LZO_DO2(buf,i+2);
|
|
#define LZO_DO8(buf,i) LZO_DO4(buf,i); LZO_DO4(buf,i+4);
|
|
#define LZO_DO16(buf,i) LZO_DO8(buf,i); LZO_DO8(buf,i+8);
|
|
|
|
LZO_PUBLIC(lzo_uint32)
|
|
lzo_adler32(lzo_uint32 adler, const lzo_byte *buf, lzo_uint len)
|
|
{
|
|
lzo_uint32 s1 = adler & 0xffff;
|
|
lzo_uint32 s2 = (adler >> 16) & 0xffff;
|
|
int k;
|
|
|
|
if (buf == NULL)
|
|
return 1;
|
|
|
|
while (len > 0)
|
|
{
|
|
k = len < LZO_NMAX ? (int) len : LZO_NMAX;
|
|
len -= k;
|
|
if (k >= 16) do
|
|
{
|
|
LZO_DO16(buf,0);
|
|
buf += 16;
|
|
k -= 16;
|
|
} while (k >= 16);
|
|
if (k != 0) do
|
|
{
|
|
s1 += *buf++;
|
|
s2 += s1;
|
|
} while (--k > 0);
|
|
s1 %= LZO_BASE;
|
|
s2 %= LZO_BASE;
|
|
}
|
|
return (s2 << 16) | s1;
|
|
}
|
|
|
|
LZO_PUBLIC(int)
|
|
lzo_memcmp(const lzo_voidp s1, const lzo_voidp s2, lzo_uint len)
|
|
{
|
|
#if (LZO_UINT_MAX <= SIZE_T_MAX) && defined(HAVE_MEMCMP)
|
|
return memcmp(s1,s2,len);
|
|
#else
|
|
const lzo_byte *p1 = (const lzo_byte *) s1;
|
|
const lzo_byte *p2 = (const lzo_byte *) s2;
|
|
int d;
|
|
|
|
if (len > 0) do
|
|
{
|
|
d = *p1 - *p2;
|
|
if (d != 0)
|
|
return d;
|
|
p1++;
|
|
p2++;
|
|
}
|
|
while (--len > 0);
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
LZO_PUBLIC(lzo_voidp)
|
|
lzo_memcpy(lzo_voidp dest, const lzo_voidp src, lzo_uint len)
|
|
{
|
|
#if (LZO_UINT_MAX <= SIZE_T_MAX) && defined(HAVE_MEMCPY)
|
|
return memcpy(dest,src,len);
|
|
#else
|
|
lzo_byte *p1 = (lzo_byte *) dest;
|
|
const lzo_byte *p2 = (const lzo_byte *) src;
|
|
|
|
if (len <= 0 || p1 == p2)
|
|
return dest;
|
|
do
|
|
*p1++ = *p2++;
|
|
while (--len > 0);
|
|
return dest;
|
|
#endif
|
|
}
|
|
|
|
LZO_PUBLIC(lzo_voidp)
|
|
lzo_memmove(lzo_voidp dest, const lzo_voidp src, lzo_uint len)
|
|
{
|
|
#if (LZO_UINT_MAX <= SIZE_T_MAX) && defined(HAVE_MEMMOVE)
|
|
return memmove(dest,src,len);
|
|
#else
|
|
lzo_byte *p1 = (lzo_byte *) dest;
|
|
const lzo_byte *p2 = (const lzo_byte *) src;
|
|
|
|
if (len <= 0 || p1 == p2)
|
|
return dest;
|
|
|
|
if (p1 < p2)
|
|
{
|
|
do
|
|
*p1++ = *p2++;
|
|
while (--len > 0);
|
|
}
|
|
else
|
|
{
|
|
p1 += len;
|
|
p2 += len;
|
|
do
|
|
*--p1 = *--p2;
|
|
while (--len > 0);
|
|
}
|
|
return dest;
|
|
#endif
|
|
}
|
|
|
|
LZO_PUBLIC(lzo_voidp)
|
|
lzo_memset(lzo_voidp s, int c, lzo_uint len)
|
|
{
|
|
#if (LZO_UINT_MAX <= SIZE_T_MAX) && defined(HAVE_MEMSET)
|
|
return memset(s,c,len);
|
|
#else
|
|
lzo_byte *p = (lzo_byte *) s;
|
|
|
|
if (len > 0) do
|
|
*p++ = LZO_BYTE(c);
|
|
while (--len > 0);
|
|
return s;
|
|
#endif
|
|
}
|
|
|
|
#if 0
|
|
# define IS_SIGNED(type) (((type) (1ul << (8 * sizeof(type) - 1))) < 0)
|
|
# define IS_UNSIGNED(type) (((type) (1ul << (8 * sizeof(type) - 1))) > 0)
|
|
#else
|
|
# define IS_SIGNED(type) (((type) (-1)) < ((type) 0))
|
|
# define IS_UNSIGNED(type) (((type) (-1)) > ((type) 0))
|
|
#endif
|
|
|
|
#define IS_POWER_OF_2(x) (((x) & ((x) - 1)) == 0)
|
|
|
|
static lzo_bool schedule_insns_bug(void);
|
|
static lzo_bool strength_reduce_bug(int *);
|
|
|
|
#if 0 || defined(LZO_DEBUG)
|
|
#include <stdio.h>
|
|
static lzo_bool __lzo_assert_fail(const char *s, unsigned line)
|
|
{
|
|
#if defined(__palmos__)
|
|
printf("LZO assertion failed in line %u: '%s'\n",line,s);
|
|
#else
|
|
fprintf(stderr,"LZO assertion failed in line %u: '%s'\n",line,s);
|
|
#endif
|
|
return 0;
|
|
}
|
|
# define __lzo_assert(x) ((x) ? 1 : __lzo_assert_fail(#x,__LINE__))
|
|
#else
|
|
# define __lzo_assert(x) ((x) ? 1 : 0)
|
|
#endif
|
|
|
|
#undef COMPILE_TIME_ASSERT
|
|
#if 0
|
|
# define COMPILE_TIME_ASSERT(expr) r &= __lzo_assert(expr)
|
|
#else
|
|
# define COMPILE_TIME_ASSERT(expr) LZO_COMPILE_TIME_ASSERT(expr)
|
|
#endif
|
|
|
|
static lzo_bool basic_integral_check(void)
|
|
{
|
|
lzo_bool r = 1;
|
|
|
|
COMPILE_TIME_ASSERT(CHAR_BIT == 8);
|
|
COMPILE_TIME_ASSERT(sizeof(char) == 1);
|
|
COMPILE_TIME_ASSERT(sizeof(short) >= 2);
|
|
COMPILE_TIME_ASSERT(sizeof(long) >= 4);
|
|
COMPILE_TIME_ASSERT(sizeof(int) >= sizeof(short));
|
|
COMPILE_TIME_ASSERT(sizeof(long) >= sizeof(int));
|
|
|
|
COMPILE_TIME_ASSERT(sizeof(lzo_uint) == sizeof(lzo_int));
|
|
COMPILE_TIME_ASSERT(sizeof(lzo_uint32) == sizeof(lzo_int32));
|
|
|
|
COMPILE_TIME_ASSERT(sizeof(lzo_uint32) >= 4);
|
|
COMPILE_TIME_ASSERT(sizeof(lzo_uint32) >= sizeof(unsigned));
|
|
#if defined(__LZO_STRICT_16BIT)
|
|
COMPILE_TIME_ASSERT(sizeof(lzo_uint) == 2);
|
|
#else
|
|
COMPILE_TIME_ASSERT(sizeof(lzo_uint) >= 4);
|
|
COMPILE_TIME_ASSERT(sizeof(lzo_uint) >= sizeof(unsigned));
|
|
#endif
|
|
|
|
#if (USHRT_MAX == 65535u)
|
|
COMPILE_TIME_ASSERT(sizeof(short) == 2);
|
|
#elif (USHRT_MAX == LZO_0xffffffffL)
|
|
COMPILE_TIME_ASSERT(sizeof(short) == 4);
|
|
#elif (USHRT_MAX >= LZO_0xffffffffL)
|
|
COMPILE_TIME_ASSERT(sizeof(short) > 4);
|
|
#endif
|
|
#if (UINT_MAX == 65535u)
|
|
COMPILE_TIME_ASSERT(sizeof(int) == 2);
|
|
#elif (UINT_MAX == LZO_0xffffffffL)
|
|
COMPILE_TIME_ASSERT(sizeof(int) == 4);
|
|
#elif (UINT_MAX >= LZO_0xffffffffL)
|
|
COMPILE_TIME_ASSERT(sizeof(int) > 4);
|
|
#endif
|
|
#if (ULONG_MAX == 65535ul)
|
|
COMPILE_TIME_ASSERT(sizeof(long) == 2);
|
|
#elif (ULONG_MAX == LZO_0xffffffffL)
|
|
COMPILE_TIME_ASSERT(sizeof(long) == 4);
|
|
#elif (ULONG_MAX >= LZO_0xffffffffL)
|
|
COMPILE_TIME_ASSERT(sizeof(long) > 4);
|
|
#endif
|
|
|
|
#if defined(SIZEOF_UNSIGNED)
|
|
COMPILE_TIME_ASSERT(SIZEOF_UNSIGNED == sizeof(unsigned));
|
|
#endif
|
|
#if defined(SIZEOF_UNSIGNED_LONG)
|
|
COMPILE_TIME_ASSERT(SIZEOF_UNSIGNED_LONG == sizeof(unsigned long));
|
|
#endif
|
|
#if defined(SIZEOF_UNSIGNED_SHORT)
|
|
COMPILE_TIME_ASSERT(SIZEOF_UNSIGNED_SHORT == sizeof(unsigned short));
|
|
#endif
|
|
#if !defined(__LZO_IN_MINILZO)
|
|
#if defined(SIZEOF_SIZE_T)
|
|
COMPILE_TIME_ASSERT(SIZEOF_SIZE_T == sizeof(size_t));
|
|
#endif
|
|
#endif
|
|
|
|
COMPILE_TIME_ASSERT(IS_UNSIGNED(unsigned char));
|
|
COMPILE_TIME_ASSERT(IS_UNSIGNED(unsigned short));
|
|
COMPILE_TIME_ASSERT(IS_UNSIGNED(unsigned));
|
|
COMPILE_TIME_ASSERT(IS_UNSIGNED(unsigned long));
|
|
COMPILE_TIME_ASSERT(IS_SIGNED(short));
|
|
COMPILE_TIME_ASSERT(IS_SIGNED(int));
|
|
COMPILE_TIME_ASSERT(IS_SIGNED(long));
|
|
|
|
COMPILE_TIME_ASSERT(IS_UNSIGNED(lzo_uint32));
|
|
COMPILE_TIME_ASSERT(IS_UNSIGNED(lzo_uint));
|
|
COMPILE_TIME_ASSERT(IS_SIGNED(lzo_int32));
|
|
COMPILE_TIME_ASSERT(IS_SIGNED(lzo_int));
|
|
|
|
COMPILE_TIME_ASSERT(INT_MAX == LZO_STYPE_MAX(sizeof(int)));
|
|
COMPILE_TIME_ASSERT(UINT_MAX == LZO_UTYPE_MAX(sizeof(unsigned)));
|
|
COMPILE_TIME_ASSERT(LONG_MAX == LZO_STYPE_MAX(sizeof(long)));
|
|
COMPILE_TIME_ASSERT(ULONG_MAX == LZO_UTYPE_MAX(sizeof(unsigned long)));
|
|
COMPILE_TIME_ASSERT(SHRT_MAX == LZO_STYPE_MAX(sizeof(short)));
|
|
COMPILE_TIME_ASSERT(USHRT_MAX == LZO_UTYPE_MAX(sizeof(unsigned short)));
|
|
COMPILE_TIME_ASSERT(LZO_UINT32_MAX == LZO_UTYPE_MAX(sizeof(lzo_uint32)));
|
|
COMPILE_TIME_ASSERT(LZO_UINT_MAX == LZO_UTYPE_MAX(sizeof(lzo_uint)));
|
|
#if !defined(__LZO_IN_MINILZO)
|
|
COMPILE_TIME_ASSERT(SIZE_T_MAX == LZO_UTYPE_MAX(sizeof(size_t)));
|
|
#endif
|
|
|
|
r &= __lzo_assert(LZO_BYTE(257) == 1);
|
|
|
|
return r;
|
|
}
|
|
|
|
static lzo_bool basic_ptr_check(void)
|
|
{
|
|
lzo_bool r = 1;
|
|
|
|
COMPILE_TIME_ASSERT(sizeof(char *) >= sizeof(int));
|
|
COMPILE_TIME_ASSERT(sizeof(lzo_byte *) >= sizeof(char *));
|
|
|
|
COMPILE_TIME_ASSERT(sizeof(lzo_voidp) == sizeof(lzo_byte *));
|
|
COMPILE_TIME_ASSERT(sizeof(lzo_voidp) == sizeof(lzo_voidpp));
|
|
COMPILE_TIME_ASSERT(sizeof(lzo_voidp) == sizeof(lzo_bytepp));
|
|
COMPILE_TIME_ASSERT(sizeof(lzo_voidp) >= sizeof(lzo_uint));
|
|
|
|
COMPILE_TIME_ASSERT(sizeof(lzo_ptr_t) == sizeof(lzo_voidp));
|
|
COMPILE_TIME_ASSERT(sizeof(lzo_ptr_t) == sizeof(lzo_sptr_t));
|
|
COMPILE_TIME_ASSERT(sizeof(lzo_ptr_t) >= sizeof(lzo_uint));
|
|
|
|
COMPILE_TIME_ASSERT(sizeof(lzo_ptrdiff_t) >= 4);
|
|
COMPILE_TIME_ASSERT(sizeof(lzo_ptrdiff_t) >= sizeof(ptrdiff_t));
|
|
|
|
COMPILE_TIME_ASSERT(sizeof(ptrdiff_t) >= sizeof(size_t));
|
|
COMPILE_TIME_ASSERT(sizeof(lzo_ptrdiff_t) >= sizeof(lzo_uint));
|
|
|
|
#if defined(SIZEOF_CHAR_P)
|
|
COMPILE_TIME_ASSERT(SIZEOF_CHAR_P == sizeof(char *));
|
|
#endif
|
|
#if defined(SIZEOF_PTRDIFF_T)
|
|
COMPILE_TIME_ASSERT(SIZEOF_PTRDIFF_T == sizeof(ptrdiff_t));
|
|
#endif
|
|
|
|
COMPILE_TIME_ASSERT(IS_SIGNED(ptrdiff_t));
|
|
COMPILE_TIME_ASSERT(IS_UNSIGNED(size_t));
|
|
COMPILE_TIME_ASSERT(IS_SIGNED(lzo_ptrdiff_t));
|
|
COMPILE_TIME_ASSERT(IS_SIGNED(lzo_sptr_t));
|
|
COMPILE_TIME_ASSERT(IS_UNSIGNED(lzo_ptr_t));
|
|
COMPILE_TIME_ASSERT(IS_UNSIGNED(lzo_moff_t));
|
|
|
|
return r;
|
|
}
|
|
|
|
static lzo_bool ptr_check(void)
|
|
{
|
|
lzo_bool r = 1;
|
|
int i;
|
|
char _wrkmem[10 * sizeof(lzo_byte *) + sizeof(lzo_full_align_t)];
|
|
lzo_bytep wrkmem;
|
|
lzo_bytepp dict;
|
|
unsigned char x[4 * sizeof(lzo_full_align_t)];
|
|
long d;
|
|
lzo_full_align_t a;
|
|
lzo_full_align_t u;
|
|
|
|
for (i = 0; i < (int) sizeof(x); i++)
|
|
x[i] = LZO_BYTE(i);
|
|
|
|
wrkmem = LZO_PTR_ALIGN_UP((lzo_byte *)_wrkmem,sizeof(lzo_full_align_t));
|
|
|
|
#if 0
|
|
dict = (lzo_bytepp) wrkmem;
|
|
#else
|
|
|
|
u.a_lzo_bytep = wrkmem; dict = u.a_lzo_bytepp;
|
|
#endif
|
|
|
|
d = (long) ((const lzo_bytep) dict - (const lzo_bytep) _wrkmem);
|
|
r &= __lzo_assert(d >= 0);
|
|
r &= __lzo_assert(d < (long) sizeof(lzo_full_align_t));
|
|
|
|
memset(&a,0,sizeof(a));
|
|
r &= __lzo_assert(a.a_lzo_voidp == NULL);
|
|
|
|
memset(&a,0xff,sizeof(a));
|
|
r &= __lzo_assert(a.a_ushort == USHRT_MAX);
|
|
r &= __lzo_assert(a.a_uint == UINT_MAX);
|
|
r &= __lzo_assert(a.a_ulong == ULONG_MAX);
|
|
r &= __lzo_assert(a.a_lzo_uint == LZO_UINT_MAX);
|
|
r &= __lzo_assert(a.a_lzo_uint32 == LZO_UINT32_MAX);
|
|
|
|
if (r == 1)
|
|
{
|
|
for (i = 0; i < 8; i++)
|
|
r &= __lzo_assert((const lzo_voidp) (&dict[i]) == (const lzo_voidp) (&wrkmem[i * sizeof(lzo_byte *)]));
|
|
}
|
|
|
|
memset(&a,0,sizeof(a));
|
|
r &= __lzo_assert(a.a_char_p == NULL);
|
|
r &= __lzo_assert(a.a_lzo_bytep == NULL);
|
|
r &= __lzo_assert(NULL == (void *)0);
|
|
if (r == 1)
|
|
{
|
|
for (i = 0; i < 10; i++)
|
|
dict[i] = wrkmem;
|
|
BZERO8_PTR(dict+1,sizeof(dict[0]),8);
|
|
r &= __lzo_assert(dict[0] == wrkmem);
|
|
for (i = 1; i < 9; i++)
|
|
r &= __lzo_assert(dict[i] == NULL);
|
|
r &= __lzo_assert(dict[9] == wrkmem);
|
|
}
|
|
|
|
if (r == 1)
|
|
{
|
|
unsigned k = 1;
|
|
const unsigned n = (unsigned) sizeof(lzo_uint32);
|
|
lzo_byte *p0;
|
|
lzo_byte *p1;
|
|
|
|
k += __lzo_align_gap(&x[k],n);
|
|
p0 = (lzo_bytep) &x[k];
|
|
#if defined(PTR_LINEAR)
|
|
r &= __lzo_assert((PTR_LINEAR(p0) & (n-1)) == 0);
|
|
#else
|
|
r &= __lzo_assert(n == 4);
|
|
r &= __lzo_assert(PTR_ALIGNED_4(p0));
|
|
#endif
|
|
|
|
r &= __lzo_assert(k >= 1);
|
|
p1 = (lzo_bytep) &x[1];
|
|
r &= __lzo_assert(PTR_GE(p0,p1));
|
|
|
|
r &= __lzo_assert(k < 1+n);
|
|
p1 = (lzo_bytep) &x[1+n];
|
|
r &= __lzo_assert(PTR_LT(p0,p1));
|
|
|
|
if (r == 1)
|
|
{
|
|
lzo_uint32 v0, v1;
|
|
#if 0
|
|
v0 = * (lzo_uint32 *) &x[k];
|
|
v1 = * (lzo_uint32 *) &x[k+n];
|
|
#else
|
|
|
|
u.a_uchar_p = &x[k];
|
|
v0 = *u.a_lzo_uint32_p;
|
|
u.a_uchar_p = &x[k+n];
|
|
v1 = *u.a_lzo_uint32_p;
|
|
#endif
|
|
r &= __lzo_assert(v0 > 0);
|
|
r &= __lzo_assert(v1 > 0);
|
|
}
|
|
}
|
|
|
|
return r;
|
|
}
|
|
|
|
LZO_PUBLIC(int)
|
|
_lzo_config_check(void)
|
|
{
|
|
lzo_bool r = 1;
|
|
int i;
|
|
union {
|
|
lzo_uint32 a;
|
|
unsigned short b;
|
|
lzo_uint32 aa[4];
|
|
unsigned char x[4*sizeof(lzo_full_align_t)];
|
|
} u;
|
|
|
|
COMPILE_TIME_ASSERT( (int) ((unsigned char) ((signed char) -1)) == 255);
|
|
COMPILE_TIME_ASSERT( (((unsigned char)128) << (int)(8*sizeof(int)-8)) < 0);
|
|
|
|
#if 0
|
|
r &= __lzo_assert((const void *)&u == (const void *)&u.a);
|
|
r &= __lzo_assert((const void *)&u == (const void *)&u.b);
|
|
r &= __lzo_assert((const void *)&u == (const void *)&u.x[0]);
|
|
r &= __lzo_assert((const void *)&u == (const void *)&u.aa[0]);
|
|
#endif
|
|
|
|
r &= basic_integral_check();
|
|
r &= basic_ptr_check();
|
|
if (r != 1)
|
|
return LZO_E_ERROR;
|
|
|
|
u.a = 0; u.b = 0;
|
|
for (i = 0; i < (int) sizeof(u.x); i++)
|
|
u.x[i] = LZO_BYTE(i);
|
|
|
|
#if defined(LZO_BYTE_ORDER)
|
|
if (r == 1)
|
|
{
|
|
# if (LZO_BYTE_ORDER == LZO_LITTLE_ENDIAN)
|
|
lzo_uint32 a = (lzo_uint32) (u.a & LZO_0xffffffffL);
|
|
unsigned short b = (unsigned short) (u.b & 0xffff);
|
|
r &= __lzo_assert(a == 0x03020100L);
|
|
r &= __lzo_assert(b == 0x0100);
|
|
# elif (LZO_BYTE_ORDER == LZO_BIG_ENDIAN)
|
|
lzo_uint32 a = u.a >> (8 * sizeof(u.a) - 32);
|
|
unsigned short b = u.b >> (8 * sizeof(u.b) - 16);
|
|
r &= __lzo_assert(a == 0x00010203L);
|
|
r &= __lzo_assert(b == 0x0001);
|
|
# else
|
|
# error "invalid LZO_BYTE_ORDER"
|
|
# endif
|
|
}
|
|
#endif
|
|
|
|
#if defined(LZO_UNALIGNED_OK_2)
|
|
COMPILE_TIME_ASSERT(sizeof(short) == 2);
|
|
if (r == 1)
|
|
{
|
|
unsigned short b[4];
|
|
|
|
for (i = 0; i < 4; i++)
|
|
b[i] = * (const unsigned short *) &u.x[i];
|
|
|
|
# if (LZO_BYTE_ORDER == LZO_LITTLE_ENDIAN)
|
|
r &= __lzo_assert(b[0] == 0x0100);
|
|
r &= __lzo_assert(b[1] == 0x0201);
|
|
r &= __lzo_assert(b[2] == 0x0302);
|
|
r &= __lzo_assert(b[3] == 0x0403);
|
|
# elif (LZO_BYTE_ORDER == LZO_BIG_ENDIAN)
|
|
r &= __lzo_assert(b[0] == 0x0001);
|
|
r &= __lzo_assert(b[1] == 0x0102);
|
|
r &= __lzo_assert(b[2] == 0x0203);
|
|
r &= __lzo_assert(b[3] == 0x0304);
|
|
# endif
|
|
}
|
|
#endif
|
|
|
|
#if defined(LZO_UNALIGNED_OK_4)
|
|
COMPILE_TIME_ASSERT(sizeof(lzo_uint32) == 4);
|
|
if (r == 1)
|
|
{
|
|
lzo_uint32 a[4];
|
|
|
|
for (i = 0; i < 4; i++)
|
|
a[i] = * (const lzo_uint32 *) &u.x[i];
|
|
|
|
# if (LZO_BYTE_ORDER == LZO_LITTLE_ENDIAN)
|
|
r &= __lzo_assert(a[0] == 0x03020100L);
|
|
r &= __lzo_assert(a[1] == 0x04030201L);
|
|
r &= __lzo_assert(a[2] == 0x05040302L);
|
|
r &= __lzo_assert(a[3] == 0x06050403L);
|
|
# elif (LZO_BYTE_ORDER == LZO_BIG_ENDIAN)
|
|
r &= __lzo_assert(a[0] == 0x00010203L);
|
|
r &= __lzo_assert(a[1] == 0x01020304L);
|
|
r &= __lzo_assert(a[2] == 0x02030405L);
|
|
r &= __lzo_assert(a[3] == 0x03040506L);
|
|
# endif
|
|
}
|
|
#endif
|
|
|
|
#if defined(LZO_ALIGNED_OK_4)
|
|
COMPILE_TIME_ASSERT(sizeof(lzo_uint32) == 4);
|
|
#endif
|
|
|
|
COMPILE_TIME_ASSERT(lzo_sizeof_dict_t == sizeof(lzo_dict_t));
|
|
|
|
#if defined(__LZO_IN_MINLZO)
|
|
if (r == 1)
|
|
{
|
|
lzo_uint32 adler;
|
|
adler = lzo_adler32(0, NULL, 0);
|
|
adler = lzo_adler32(adler, lzo_copyright(), 200);
|
|
r &= __lzo_assert(adler == 0xc76f1751L);
|
|
}
|
|
#endif
|
|
|
|
if (r == 1)
|
|
{
|
|
r &= __lzo_assert(!schedule_insns_bug());
|
|
}
|
|
|
|
if (r == 1)
|
|
{
|
|
static int x[3];
|
|
static unsigned xn = 3;
|
|
register unsigned j;
|
|
|
|
for (j = 0; j < xn; j++)
|
|
x[j] = (int)j - 3;
|
|
r &= __lzo_assert(!strength_reduce_bug(x));
|
|
}
|
|
|
|
if (r == 1)
|
|
{
|
|
r &= ptr_check();
|
|
}
|
|
|
|
return r == 1 ? LZO_E_OK : LZO_E_ERROR;
|
|
}
|
|
|
|
static lzo_bool schedule_insns_bug(void)
|
|
{
|
|
#if defined(__LZO_CHECKER)
|
|
return 0;
|
|
#else
|
|
const int clone[] = {1, 2, 0};
|
|
const int *q;
|
|
q = clone;
|
|
return (*q) ? 0 : 1;
|
|
#endif
|
|
}
|
|
|
|
static lzo_bool strength_reduce_bug(int *x)
|
|
{
|
|
return x[0] != -3 || x[1] != -2 || x[2] != -1;
|
|
}
|
|
|
|
#undef COMPILE_TIME_ASSERT
|
|
|
|
int __lzo_init_done = 0;
|
|
|
|
LZO_PUBLIC(int)
|
|
__lzo_init2(unsigned v, int s1, int s2, int s3, int s4, int s5,
|
|
int s6, int s7, int s8, int s9)
|
|
{
|
|
int r;
|
|
|
|
__lzo_init_done = 1;
|
|
|
|
if (v == 0)
|
|
return LZO_E_ERROR;
|
|
|
|
r = (s1 == -1 || s1 == (int) sizeof(short)) &&
|
|
(s2 == -1 || s2 == (int) sizeof(int)) &&
|
|
(s3 == -1 || s3 == (int) sizeof(long)) &&
|
|
(s4 == -1 || s4 == (int) sizeof(lzo_uint32)) &&
|
|
(s5 == -1 || s5 == (int) sizeof(lzo_uint)) &&
|
|
(s6 == -1 || s6 == (int) lzo_sizeof_dict_t) &&
|
|
(s7 == -1 || s7 == (int) sizeof(char *)) &&
|
|
(s8 == -1 || s8 == (int) sizeof(lzo_voidp)) &&
|
|
(s9 == -1 || s9 == (int) sizeof(lzo_compress_t));
|
|
if (!r)
|
|
return LZO_E_ERROR;
|
|
|
|
r = _lzo_config_check();
|
|
if (r != LZO_E_OK)
|
|
return r;
|
|
|
|
return r;
|
|
}
|
|
|
|
#if !defined(__LZO_IN_MINILZO)
|
|
|
|
LZO_EXTERN(int)
|
|
__lzo_init(unsigned v,int s1,int s2,int s3,int s4,int s5,int s6,int s7);
|
|
|
|
LZO_PUBLIC(int)
|
|
__lzo_init(unsigned v,int s1,int s2,int s3,int s4,int s5,int s6,int s7)
|
|
{
|
|
if (v == 0 || v > 0x1010)
|
|
return LZO_E_ERROR;
|
|
return __lzo_init2(v,s1,s2,s3,s4,s5,-1,-1,s6,s7);
|
|
}
|
|
|
|
#endif
|
|
|
|
#define do_compress _lzo1x_1_do_compress
|
|
|
|
#define LZO_NEED_DICT_H
|
|
#define D_BITS 14
|
|
#define D_INDEX1(d,p) d = DM((0x21*DX3(p,5,5,6)) >> 5)
|
|
#define D_INDEX2(d,p) d = (d & (D_MASK & 0x7ff)) ^ (D_HIGH | 0x1f)
|
|
|
|
#ifndef __LZO_CONFIG1X_H
|
|
#define __LZO_CONFIG1X_H
|
|
|
|
#if !defined(LZO1X) && !defined(LZO1Y) && !defined(LZO1Z)
|
|
# define LZO1X
|
|
#endif
|
|
|
|
#if !defined(__LZO_IN_MINILZO)
|
|
#include <lzo1x.h>
|
|
#endif
|
|
|
|
#define LZO_EOF_CODE
|
|
#undef LZO_DETERMINISTIC
|
|
|
|
#define M1_MAX_OFFSET 0x0400
|
|
#ifndef M2_MAX_OFFSET
|
|
#define M2_MAX_OFFSET 0x0800
|
|
#endif
|
|
#define M3_MAX_OFFSET 0x4000
|
|
#define M4_MAX_OFFSET 0xbfff
|
|
|
|
#define MX_MAX_OFFSET (M1_MAX_OFFSET + M2_MAX_OFFSET)
|
|
|
|
#define M1_MIN_LEN 2
|
|
#define M1_MAX_LEN 2
|
|
#define M2_MIN_LEN 3
|
|
#ifndef M2_MAX_LEN
|
|
#define M2_MAX_LEN 8
|
|
#endif
|
|
#define M3_MIN_LEN 3
|
|
#define M3_MAX_LEN 33
|
|
#define M4_MIN_LEN 3
|
|
#define M4_MAX_LEN 9
|
|
|
|
#define M1_MARKER 0
|
|
#define M2_MARKER 64
|
|
#define M3_MARKER 32
|
|
#define M4_MARKER 16
|
|
|
|
#ifndef MIN_LOOKAHEAD
|
|
#define MIN_LOOKAHEAD (M2_MAX_LEN + 1)
|
|
#endif
|
|
|
|
#if defined(LZO_NEED_DICT_H)
|
|
|
|
#ifndef LZO_HASH
|
|
#define LZO_HASH LZO_HASH_LZO_INCREMENTAL_B
|
|
#endif
|
|
#define DL_MIN_LEN M2_MIN_LEN
|
|
|
|
#ifndef __LZO_DICT_H
|
|
#define __LZO_DICT_H
|
|
|
|
#ifdef __cplusplus
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extern "C" {
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#endif
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|
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#if !defined(D_BITS) && defined(DBITS)
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# define D_BITS DBITS
|
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#endif
|
|
#if !defined(D_BITS)
|
|
# error "D_BITS is not defined"
|
|
#endif
|
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#if (D_BITS < 16)
|
|
# define D_SIZE LZO_SIZE(D_BITS)
|
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# define D_MASK LZO_MASK(D_BITS)
|
|
#else
|
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# define D_SIZE LZO_USIZE(D_BITS)
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# define D_MASK LZO_UMASK(D_BITS)
|
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#endif
|
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#define D_HIGH ((D_MASK >> 1) + 1)
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|
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#if !defined(DD_BITS)
|
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# define DD_BITS 0
|
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#endif
|
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#define DD_SIZE LZO_SIZE(DD_BITS)
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#define DD_MASK LZO_MASK(DD_BITS)
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|
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#if !defined(DL_BITS)
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# define DL_BITS (D_BITS - DD_BITS)
|
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#endif
|
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#if (DL_BITS < 16)
|
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# define DL_SIZE LZO_SIZE(DL_BITS)
|
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# define DL_MASK LZO_MASK(DL_BITS)
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#else
|
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# define DL_SIZE LZO_USIZE(DL_BITS)
|
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# define DL_MASK LZO_UMASK(DL_BITS)
|
|
#endif
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|
|
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#if (D_BITS != DL_BITS + DD_BITS)
|
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# error "D_BITS does not match"
|
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#endif
|
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#if (D_BITS < 8 || D_BITS > 18)
|
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# error "invalid D_BITS"
|
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#endif
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#if (DL_BITS < 8 || DL_BITS > 20)
|
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# error "invalid DL_BITS"
|
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#endif
|
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#if (DD_BITS < 0 || DD_BITS > 6)
|
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# error "invalid DD_BITS"
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#endif
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|
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#if !defined(DL_MIN_LEN)
|
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# define DL_MIN_LEN 3
|
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#endif
|
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#if !defined(DL_SHIFT)
|
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# define DL_SHIFT ((DL_BITS + (DL_MIN_LEN - 1)) / DL_MIN_LEN)
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#endif
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|
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#define LZO_HASH_GZIP 1
|
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#define LZO_HASH_GZIP_INCREMENTAL 2
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#define LZO_HASH_LZO_INCREMENTAL_A 3
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#define LZO_HASH_LZO_INCREMENTAL_B 4
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|
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#if !defined(LZO_HASH)
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# error "choose a hashing strategy"
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#endif
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|
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#if (DL_MIN_LEN == 3)
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# define _DV2_A(p,shift1,shift2) \
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(((( (lzo_uint32)((p)[0]) << shift1) ^ (p)[1]) << shift2) ^ (p)[2])
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# define _DV2_B(p,shift1,shift2) \
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(((( (lzo_uint32)((p)[2]) << shift1) ^ (p)[1]) << shift2) ^ (p)[0])
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# define _DV3_B(p,shift1,shift2,shift3) \
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((_DV2_B((p)+1,shift1,shift2) << (shift3)) ^ (p)[0])
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#elif (DL_MIN_LEN == 2)
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# define _DV2_A(p,shift1,shift2) \
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(( (lzo_uint32)(p[0]) << shift1) ^ p[1])
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# define _DV2_B(p,shift1,shift2) \
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(( (lzo_uint32)(p[1]) << shift1) ^ p[2])
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#else
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# error "invalid DL_MIN_LEN"
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#endif
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#define _DV_A(p,shift) _DV2_A(p,shift,shift)
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#define _DV_B(p,shift) _DV2_B(p,shift,shift)
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#define DA2(p,s1,s2) \
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(((((lzo_uint32)((p)[2]) << (s2)) + (p)[1]) << (s1)) + (p)[0])
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#define DS2(p,s1,s2) \
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(((((lzo_uint32)((p)[2]) << (s2)) - (p)[1]) << (s1)) - (p)[0])
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#define DX2(p,s1,s2) \
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(((((lzo_uint32)((p)[2]) << (s2)) ^ (p)[1]) << (s1)) ^ (p)[0])
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#define DA3(p,s1,s2,s3) ((DA2((p)+1,s2,s3) << (s1)) + (p)[0])
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#define DS3(p,s1,s2,s3) ((DS2((p)+1,s2,s3) << (s1)) - (p)[0])
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#define DX3(p,s1,s2,s3) ((DX2((p)+1,s2,s3) << (s1)) ^ (p)[0])
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#define DMS(v,s) ((lzo_uint) (((v) & (D_MASK >> (s))) << (s)))
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#define DM(v) DMS(v,0)
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|
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#if (LZO_HASH == LZO_HASH_GZIP)
|
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# define _DINDEX(dv,p) (_DV_A((p),DL_SHIFT))
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|
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#elif (LZO_HASH == LZO_HASH_GZIP_INCREMENTAL)
|
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# define __LZO_HASH_INCREMENTAL
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# define DVAL_FIRST(dv,p) dv = _DV_A((p),DL_SHIFT)
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# define DVAL_NEXT(dv,p) dv = (((dv) << DL_SHIFT) ^ p[2])
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# define _DINDEX(dv,p) (dv)
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# define DVAL_LOOKAHEAD DL_MIN_LEN
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|
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#elif (LZO_HASH == LZO_HASH_LZO_INCREMENTAL_A)
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# define __LZO_HASH_INCREMENTAL
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# define DVAL_FIRST(dv,p) dv = _DV_A((p),5)
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# define DVAL_NEXT(dv,p) \
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dv ^= (lzo_uint32)(p[-1]) << (2*5); dv = (((dv) << 5) ^ p[2])
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# define _DINDEX(dv,p) ((0x9f5f * (dv)) >> 5)
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# define DVAL_LOOKAHEAD DL_MIN_LEN
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|
|
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#elif (LZO_HASH == LZO_HASH_LZO_INCREMENTAL_B)
|
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# define __LZO_HASH_INCREMENTAL
|
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# define DVAL_FIRST(dv,p) dv = _DV_B((p),5)
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# define DVAL_NEXT(dv,p) \
|
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dv ^= p[-1]; dv = (((dv) >> 5) ^ ((lzo_uint32)(p[2]) << (2*5)))
|
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# define _DINDEX(dv,p) ((0x9f5f * (dv)) >> 5)
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# define DVAL_LOOKAHEAD DL_MIN_LEN
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#else
|
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# error "choose a hashing strategy"
|
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#endif
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|
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#ifndef DINDEX
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#define DINDEX(dv,p) ((lzo_uint)((_DINDEX(dv,p)) & DL_MASK) << DD_BITS)
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#endif
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#if !defined(DINDEX1) && defined(D_INDEX1)
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#define DINDEX1 D_INDEX1
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#endif
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#if !defined(DINDEX2) && defined(D_INDEX2)
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#define DINDEX2 D_INDEX2
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#endif
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|
|
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#if !defined(__LZO_HASH_INCREMENTAL)
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# define DVAL_FIRST(dv,p) ((void) 0)
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# define DVAL_NEXT(dv,p) ((void) 0)
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# define DVAL_LOOKAHEAD 0
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#endif
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|
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#if !defined(DVAL_ASSERT)
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#if defined(__LZO_HASH_INCREMENTAL) && !defined(NDEBUG)
|
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static void DVAL_ASSERT(lzo_uint32 dv, const lzo_byte *p)
|
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{
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|
lzo_uint32 df;
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DVAL_FIRST(df,(p));
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assert(DINDEX(dv,p) == DINDEX(df,p));
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}
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#else
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# define DVAL_ASSERT(dv,p) ((void) 0)
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#endif
|
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#endif
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|
|
#if defined(LZO_DICT_USE_PTR)
|
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# define DENTRY(p,in) (p)
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# define GINDEX(m_pos,m_off,dict,dindex,in) m_pos = dict[dindex]
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#else
|
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# define DENTRY(p,in) ((lzo_uint) ((p)-(in)))
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# define GINDEX(m_pos,m_off,dict,dindex,in) m_off = dict[dindex]
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#endif
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|
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#if (DD_BITS == 0)
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|
|
# define UPDATE_D(dict,drun,dv,p,in) dict[ DINDEX(dv,p) ] = DENTRY(p,in)
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# define UPDATE_I(dict,drun,index,p,in) dict[index] = DENTRY(p,in)
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# define UPDATE_P(ptr,drun,p,in) (ptr)[0] = DENTRY(p,in)
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#else
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|
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# define UPDATE_D(dict,drun,dv,p,in) \
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dict[ DINDEX(dv,p) + drun++ ] = DENTRY(p,in); drun &= DD_MASK
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# define UPDATE_I(dict,drun,index,p,in) \
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dict[ (index) + drun++ ] = DENTRY(p,in); drun &= DD_MASK
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# define UPDATE_P(ptr,drun,p,in) \
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(ptr) [ drun++ ] = DENTRY(p,in); drun &= DD_MASK
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|
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#endif
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|
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#if defined(LZO_DICT_USE_PTR)
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|
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#define LZO_CHECK_MPOS_DET(m_pos,m_off,in,ip,max_offset) \
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(m_pos == NULL || (m_off = (lzo_moff_t) (ip - m_pos)) > max_offset)
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|
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#define LZO_CHECK_MPOS_NON_DET(m_pos,m_off,in,ip,max_offset) \
|
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(BOUNDS_CHECKING_OFF_IN_EXPR( \
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(PTR_LT(m_pos,in) || \
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(m_off = (lzo_moff_t) PTR_DIFF(ip,m_pos)) <= 0 || \
|
|
m_off > max_offset) ))
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|
|
|
#else
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|
|
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#define LZO_CHECK_MPOS_DET(m_pos,m_off,in,ip,max_offset) \
|
|
(m_off == 0 || \
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((m_off = (lzo_moff_t) ((ip)-(in)) - m_off) > max_offset) || \
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|
(m_pos = (ip) - (m_off), 0) )
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|
|
|
#define LZO_CHECK_MPOS_NON_DET(m_pos,m_off,in,ip,max_offset) \
|
|
((lzo_moff_t) ((ip)-(in)) <= m_off || \
|
|
((m_off = (lzo_moff_t) ((ip)-(in)) - m_off) > max_offset) || \
|
|
(m_pos = (ip) - (m_off), 0) )
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|
|
|
#endif
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|
|
|
#if defined(LZO_DETERMINISTIC)
|
|
# define LZO_CHECK_MPOS LZO_CHECK_MPOS_DET
|
|
#else
|
|
# define LZO_CHECK_MPOS LZO_CHECK_MPOS_NON_DET
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
#endif
|
|
|
|
#define DO_COMPRESS lzo1x_1_compress
|
|
|
|
static
|
|
lzo_uint do_compress ( const lzo_byte *in , lzo_uint in_len,
|
|
lzo_byte *out, lzo_uintp out_len,
|
|
lzo_voidp wrkmem )
|
|
{
|
|
#if 0 && defined(__GNUC__) && defined(__i386__)
|
|
register const lzo_byte *ip __asm__("%esi");
|
|
#else
|
|
register const lzo_byte *ip;
|
|
#endif
|
|
lzo_byte *op;
|
|
const lzo_byte * const in_end = in + in_len;
|
|
const lzo_byte * const ip_end = in + in_len - M2_MAX_LEN - 5;
|
|
const lzo_byte *ii;
|
|
lzo_dict_p const dict = (lzo_dict_p) wrkmem;
|
|
|
|
op = out;
|
|
ip = in;
|
|
ii = ip;
|
|
|
|
ip += 4;
|
|
for (;;)
|
|
{
|
|
#if 0 && defined(__GNUC__) && defined(__i386__)
|
|
register const lzo_byte *m_pos __asm__("%edi");
|
|
#else
|
|
register const lzo_byte *m_pos;
|
|
#endif
|
|
lzo_moff_t m_off;
|
|
lzo_uint m_len;
|
|
lzo_uint dindex;
|
|
|
|
DINDEX1(dindex,ip);
|
|
GINDEX(m_pos,m_off,dict,dindex,in);
|
|
if (LZO_CHECK_MPOS_NON_DET(m_pos,m_off,in,ip,M4_MAX_OFFSET))
|
|
goto literal;
|
|
#if 1
|
|
if (m_off <= M2_MAX_OFFSET || m_pos[3] == ip[3])
|
|
goto try_match;
|
|
DINDEX2(dindex,ip);
|
|
#endif
|
|
GINDEX(m_pos,m_off,dict,dindex,in);
|
|
if (LZO_CHECK_MPOS_NON_DET(m_pos,m_off,in,ip,M4_MAX_OFFSET))
|
|
goto literal;
|
|
if (m_off <= M2_MAX_OFFSET || m_pos[3] == ip[3])
|
|
goto try_match;
|
|
goto literal;
|
|
|
|
try_match:
|
|
#if 1 && defined(LZO_UNALIGNED_OK_2)
|
|
if (* (const lzo_ushortp) m_pos != * (const lzo_ushortp) ip)
|
|
#else
|
|
if (m_pos[0] != ip[0] || m_pos[1] != ip[1])
|
|
#endif
|
|
{
|
|
}
|
|
else
|
|
{
|
|
if (m_pos[2] == ip[2])
|
|
{
|
|
#if 0
|
|
if (m_off <= M2_MAX_OFFSET)
|
|
goto match;
|
|
if (lit <= 3)
|
|
goto match;
|
|
if (lit == 3)
|
|
{
|
|
assert(op - 2 > out); op[-2] |= LZO_BYTE(3);
|
|
*op++ = *ii++; *op++ = *ii++; *op++ = *ii++;
|
|
goto code_match;
|
|
}
|
|
if (m_pos[3] == ip[3])
|
|
#endif
|
|
goto match;
|
|
}
|
|
else
|
|
{
|
|
#if 0
|
|
#if 0
|
|
if (m_off <= M1_MAX_OFFSET && lit > 0 && lit <= 3)
|
|
#else
|
|
if (m_off <= M1_MAX_OFFSET && lit == 3)
|
|
#endif
|
|
{
|
|
register lzo_uint t;
|
|
|
|
t = lit;
|
|
assert(op - 2 > out); op[-2] |= LZO_BYTE(t);
|
|
do *op++ = *ii++; while (--t > 0);
|
|
assert(ii == ip);
|
|
m_off -= 1;
|
|
*op++ = LZO_BYTE(M1_MARKER | ((m_off & 3) << 2));
|
|
*op++ = LZO_BYTE(m_off >> 2);
|
|
ip += 2;
|
|
goto match_done;
|
|
}
|
|
#endif
|
|
}
|
|
}
|
|
|
|
literal:
|
|
UPDATE_I(dict,0,dindex,ip,in);
|
|
++ip;
|
|
if (ip >= ip_end)
|
|
break;
|
|
continue;
|
|
|
|
match:
|
|
UPDATE_I(dict,0,dindex,ip,in);
|
|
if (pd(ip,ii) > 0)
|
|
{
|
|
register lzo_uint t = pd(ip,ii);
|
|
|
|
if (t <= 3)
|
|
{
|
|
assert(op - 2 > out);
|
|
op[-2] |= LZO_BYTE(t);
|
|
}
|
|
else if (t <= 18)
|
|
*op++ = LZO_BYTE(t - 3);
|
|
else
|
|
{
|
|
register lzo_uint tt = t - 18;
|
|
|
|
*op++ = 0;
|
|
while (tt > 255)
|
|
{
|
|
tt -= 255;
|
|
*op++ = 0;
|
|
}
|
|
assert(tt > 0);
|
|
*op++ = LZO_BYTE(tt);
|
|
}
|
|
do *op++ = *ii++; while (--t > 0);
|
|
}
|
|
|
|
assert(ii == ip);
|
|
ip += 3;
|
|
if (m_pos[3] != *ip++ || m_pos[4] != *ip++ || m_pos[5] != *ip++ ||
|
|
m_pos[6] != *ip++ || m_pos[7] != *ip++ || m_pos[8] != *ip++
|
|
#ifdef LZO1Y
|
|
|| m_pos[ 9] != *ip++ || m_pos[10] != *ip++ || m_pos[11] != *ip++
|
|
|| m_pos[12] != *ip++ || m_pos[13] != *ip++ || m_pos[14] != *ip++
|
|
#endif
|
|
)
|
|
{
|
|
--ip;
|
|
m_len = ip - ii;
|
|
assert(m_len >= 3); assert(m_len <= M2_MAX_LEN);
|
|
|
|
if (m_off <= M2_MAX_OFFSET)
|
|
{
|
|
m_off -= 1;
|
|
#if defined(LZO1X)
|
|
*op++ = LZO_BYTE(((m_len - 1) << 5) | ((m_off & 7) << 2));
|
|
*op++ = LZO_BYTE(m_off >> 3);
|
|
#elif defined(LZO1Y)
|
|
*op++ = LZO_BYTE(((m_len + 1) << 4) | ((m_off & 3) << 2));
|
|
*op++ = LZO_BYTE(m_off >> 2);
|
|
#endif
|
|
}
|
|
else if (m_off <= M3_MAX_OFFSET)
|
|
{
|
|
m_off -= 1;
|
|
*op++ = LZO_BYTE(M3_MARKER | (m_len - 2));
|
|
goto m3_m4_offset;
|
|
}
|
|
else
|
|
#if defined(LZO1X)
|
|
{
|
|
m_off -= 0x4000;
|
|
assert(m_off > 0); assert(m_off <= 0x7fff);
|
|
*op++ = LZO_BYTE(M4_MARKER |
|
|
((m_off & 0x4000) >> 11) | (m_len - 2));
|
|
goto m3_m4_offset;
|
|
}
|
|
#elif defined(LZO1Y)
|
|
goto m4_match;
|
|
#endif
|
|
}
|
|
else
|
|
{
|
|
{
|
|
const lzo_byte *end = in_end;
|
|
const lzo_byte *m = m_pos + M2_MAX_LEN + 1;
|
|
while (ip < end && *m == *ip)
|
|
m++, ip++;
|
|
m_len = (ip - ii);
|
|
}
|
|
assert(m_len > M2_MAX_LEN);
|
|
|
|
if (m_off <= M3_MAX_OFFSET)
|
|
{
|
|
m_off -= 1;
|
|
if (m_len <= 33)
|
|
*op++ = LZO_BYTE(M3_MARKER | (m_len - 2));
|
|
else
|
|
{
|
|
m_len -= 33;
|
|
*op++ = M3_MARKER | 0;
|
|
goto m3_m4_len;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
#if defined(LZO1Y)
|
|
m4_match:
|
|
#endif
|
|
m_off -= 0x4000;
|
|
assert(m_off > 0); assert(m_off <= 0x7fff);
|
|
if (m_len <= M4_MAX_LEN)
|
|
*op++ = LZO_BYTE(M4_MARKER |
|
|
((m_off & 0x4000) >> 11) | (m_len - 2));
|
|
else
|
|
{
|
|
m_len -= M4_MAX_LEN;
|
|
*op++ = LZO_BYTE(M4_MARKER | ((m_off & 0x4000) >> 11));
|
|
m3_m4_len:
|
|
while (m_len > 255)
|
|
{
|
|
m_len -= 255;
|
|
*op++ = 0;
|
|
}
|
|
assert(m_len > 0);
|
|
*op++ = LZO_BYTE(m_len);
|
|
}
|
|
}
|
|
|
|
m3_m4_offset:
|
|
*op++ = LZO_BYTE((m_off & 63) << 2);
|
|
*op++ = LZO_BYTE(m_off >> 6);
|
|
}
|
|
|
|
#if 0
|
|
match_done:
|
|
#endif
|
|
ii = ip;
|
|
if (ip >= ip_end)
|
|
break;
|
|
}
|
|
|
|
*out_len = op - out;
|
|
return pd(in_end,ii);
|
|
}
|
|
|
|
LZO_PUBLIC(int)
|
|
DO_COMPRESS ( const lzo_byte *in , lzo_uint in_len,
|
|
lzo_byte *out, lzo_uintp out_len,
|
|
lzo_voidp wrkmem )
|
|
{
|
|
lzo_byte *op = out;
|
|
lzo_uint t;
|
|
|
|
#if defined(__LZO_QUERY_COMPRESS)
|
|
if (__LZO_IS_COMPRESS_QUERY(in,in_len,out,out_len,wrkmem))
|
|
return __LZO_QUERY_COMPRESS(in,in_len,out,out_len,wrkmem,D_SIZE,lzo_sizeof(lzo_dict_t));
|
|
#endif
|
|
|
|
if (in_len <= M2_MAX_LEN + 5)
|
|
t = in_len;
|
|
else
|
|
{
|
|
t = do_compress(in,in_len,op,out_len,wrkmem);
|
|
op += *out_len;
|
|
}
|
|
|
|
if (t > 0)
|
|
{
|
|
const lzo_byte *ii = in + in_len - t;
|
|
|
|
if (op == out && t <= 238)
|
|
*op++ = LZO_BYTE(17 + t);
|
|
else if (t <= 3)
|
|
op[-2] |= LZO_BYTE(t);
|
|
else if (t <= 18)
|
|
*op++ = LZO_BYTE(t - 3);
|
|
else
|
|
{
|
|
lzo_uint tt = t - 18;
|
|
|
|
*op++ = 0;
|
|
while (tt > 255)
|
|
{
|
|
tt -= 255;
|
|
*op++ = 0;
|
|
}
|
|
assert(tt > 0);
|
|
*op++ = LZO_BYTE(tt);
|
|
}
|
|
do *op++ = *ii++; while (--t > 0);
|
|
}
|
|
|
|
*op++ = M4_MARKER | 1;
|
|
*op++ = 0;
|
|
*op++ = 0;
|
|
|
|
*out_len = op - out;
|
|
return LZO_E_OK;
|
|
}
|
|
|
|
#undef do_compress
|
|
#undef DO_COMPRESS
|
|
#undef LZO_HASH
|
|
|
|
#undef LZO_TEST_DECOMPRESS_OVERRUN
|
|
#undef LZO_TEST_DECOMPRESS_OVERRUN_INPUT
|
|
#undef LZO_TEST_DECOMPRESS_OVERRUN_OUTPUT
|
|
#undef LZO_TEST_DECOMPRESS_OVERRUN_LOOKBEHIND
|
|
#undef DO_DECOMPRESS
|
|
#define DO_DECOMPRESS lzo1x_decompress
|
|
|
|
#if defined(LZO_TEST_DECOMPRESS_OVERRUN)
|
|
# if !defined(LZO_TEST_DECOMPRESS_OVERRUN_INPUT)
|
|
# define LZO_TEST_DECOMPRESS_OVERRUN_INPUT 2
|
|
# endif
|
|
# if !defined(LZO_TEST_DECOMPRESS_OVERRUN_OUTPUT)
|
|
# define LZO_TEST_DECOMPRESS_OVERRUN_OUTPUT 2
|
|
# endif
|
|
# if !defined(LZO_TEST_DECOMPRESS_OVERRUN_LOOKBEHIND)
|
|
# define LZO_TEST_DECOMPRESS_OVERRUN_LOOKBEHIND
|
|
# endif
|
|
#endif
|
|
|
|
#undef TEST_IP
|
|
#undef TEST_OP
|
|
#undef TEST_LOOKBEHIND
|
|
#undef NEED_IP
|
|
#undef NEED_OP
|
|
#undef HAVE_TEST_IP
|
|
#undef HAVE_TEST_OP
|
|
#undef HAVE_NEED_IP
|
|
#undef HAVE_NEED_OP
|
|
#undef HAVE_ANY_IP
|
|
#undef HAVE_ANY_OP
|
|
|
|
#if defined(LZO_TEST_DECOMPRESS_OVERRUN_INPUT)
|
|
# if (LZO_TEST_DECOMPRESS_OVERRUN_INPUT >= 1)
|
|
# define TEST_IP (ip < ip_end)
|
|
# endif
|
|
# if (LZO_TEST_DECOMPRESS_OVERRUN_INPUT >= 2)
|
|
# define NEED_IP(x) \
|
|
if ((lzo_uint)(ip_end - ip) < (lzo_uint)(x)) goto input_overrun
|
|
# endif
|
|
#endif
|
|
|
|
#if defined(LZO_TEST_DECOMPRESS_OVERRUN_OUTPUT)
|
|
# if (LZO_TEST_DECOMPRESS_OVERRUN_OUTPUT >= 1)
|
|
# define TEST_OP (op <= op_end)
|
|
# endif
|
|
# if (LZO_TEST_DECOMPRESS_OVERRUN_OUTPUT >= 2)
|
|
# undef TEST_OP
|
|
# define NEED_OP(x) \
|
|
if ((lzo_uint)(op_end - op) < (lzo_uint)(x)) goto output_overrun
|
|
# endif
|
|
#endif
|
|
|
|
#if defined(LZO_TEST_DECOMPRESS_OVERRUN_LOOKBEHIND)
|
|
# define TEST_LOOKBEHIND(m_pos,out) if (m_pos < out) goto lookbehind_overrun
|
|
#else
|
|
# define TEST_LOOKBEHIND(m_pos,op) ((void) 0)
|
|
#endif
|
|
|
|
#if !defined(LZO_EOF_CODE) && !defined(TEST_IP)
|
|
# define TEST_IP (ip < ip_end)
|
|
#endif
|
|
|
|
#if defined(TEST_IP)
|
|
# define HAVE_TEST_IP
|
|
#else
|
|
# define TEST_IP 1
|
|
#endif
|
|
#if defined(TEST_OP)
|
|
# define HAVE_TEST_OP
|
|
#else
|
|
# define TEST_OP 1
|
|
#endif
|
|
|
|
#if defined(NEED_IP)
|
|
# define HAVE_NEED_IP
|
|
#else
|
|
# define NEED_IP(x) ((void) 0)
|
|
#endif
|
|
#if defined(NEED_OP)
|
|
# define HAVE_NEED_OP
|
|
#else
|
|
# define NEED_OP(x) ((void) 0)
|
|
#endif
|
|
|
|
#if defined(HAVE_TEST_IP) || defined(HAVE_NEED_IP)
|
|
# define HAVE_ANY_IP
|
|
#endif
|
|
#if defined(HAVE_TEST_OP) || defined(HAVE_NEED_OP)
|
|
# define HAVE_ANY_OP
|
|
#endif
|
|
|
|
#undef __COPY4
|
|
#define __COPY4(dst,src) * (lzo_uint32p)(dst) = * (const lzo_uint32p)(src)
|
|
|
|
#undef COPY4
|
|
#if defined(LZO_UNALIGNED_OK_4)
|
|
# define COPY4(dst,src) __COPY4(dst,src)
|
|
#elif defined(LZO_ALIGNED_OK_4)
|
|
# define COPY4(dst,src) __COPY4((lzo_ptr_t)(dst),(lzo_ptr_t)(src))
|
|
#endif
|
|
|
|
#if defined(DO_DECOMPRESS)
|
|
LZO_PUBLIC(int)
|
|
DO_DECOMPRESS ( const lzo_byte *in , lzo_uint in_len,
|
|
lzo_byte *out, lzo_uintp out_len,
|
|
lzo_voidp wrkmem )
|
|
#endif
|
|
{
|
|
register lzo_byte *op;
|
|
register const lzo_byte *ip;
|
|
register lzo_uint t;
|
|
#if defined(COPY_DICT)
|
|
lzo_uint m_off;
|
|
const lzo_byte *dict_end;
|
|
#else
|
|
register const lzo_byte *m_pos;
|
|
#endif
|
|
|
|
const lzo_byte * const ip_end = in + in_len;
|
|
#if defined(HAVE_ANY_OP)
|
|
lzo_byte * const op_end = out + *out_len;
|
|
#endif
|
|
#if defined(LZO1Z)
|
|
lzo_uint last_m_off = 0;
|
|
#endif
|
|
|
|
LZO_UNUSED(wrkmem);
|
|
|
|
#if defined(__LZO_QUERY_DECOMPRESS)
|
|
if (__LZO_IS_DECOMPRESS_QUERY(in,in_len,out,out_len,wrkmem))
|
|
return __LZO_QUERY_DECOMPRESS(in,in_len,out,out_len,wrkmem,0,0);
|
|
#endif
|
|
|
|
#if defined(COPY_DICT)
|
|
if (dict)
|
|
{
|
|
if (dict_len > M4_MAX_OFFSET)
|
|
{
|
|
dict += dict_len - M4_MAX_OFFSET;
|
|
dict_len = M4_MAX_OFFSET;
|
|
}
|
|
dict_end = dict + dict_len;
|
|
}
|
|
else
|
|
{
|
|
dict_len = 0;
|
|
dict_end = NULL;
|
|
}
|
|
#endif
|
|
|
|
*out_len = 0;
|
|
|
|
op = out;
|
|
ip = in;
|
|
|
|
if (*ip > 17)
|
|
{
|
|
t = *ip++ - 17;
|
|
if (t < 4)
|
|
goto match_next;
|
|
assert(t > 0); NEED_OP(t); NEED_IP(t+1);
|
|
do *op++ = *ip++; while (--t > 0);
|
|
goto first_literal_run;
|
|
}
|
|
|
|
while (TEST_IP && TEST_OP)
|
|
{
|
|
t = *ip++;
|
|
if (t >= 16)
|
|
goto match;
|
|
if (t == 0)
|
|
{
|
|
NEED_IP(1);
|
|
while (*ip == 0)
|
|
{
|
|
t += 255;
|
|
ip++;
|
|
NEED_IP(1);
|
|
}
|
|
t += 15 + *ip++;
|
|
}
|
|
assert(t > 0); NEED_OP(t+3); NEED_IP(t+4);
|
|
#if defined(LZO_UNALIGNED_OK_4) || defined(LZO_ALIGNED_OK_4)
|
|
#if !defined(LZO_UNALIGNED_OK_4)
|
|
if (PTR_ALIGNED2_4(op,ip))
|
|
{
|
|
#endif
|
|
COPY4(op,ip);
|
|
op += 4; ip += 4;
|
|
if (--t > 0)
|
|
{
|
|
if (t >= 4)
|
|
{
|
|
do {
|
|
COPY4(op,ip);
|
|
op += 4; ip += 4; t -= 4;
|
|
} while (t >= 4);
|
|
if (t > 0) do *op++ = *ip++; while (--t > 0);
|
|
}
|
|
else
|
|
do *op++ = *ip++; while (--t > 0);
|
|
}
|
|
#if !defined(LZO_UNALIGNED_OK_4)
|
|
}
|
|
else
|
|
#endif
|
|
#endif
|
|
#if !defined(LZO_UNALIGNED_OK_4)
|
|
{
|
|
*op++ = *ip++; *op++ = *ip++; *op++ = *ip++;
|
|
do *op++ = *ip++; while (--t > 0);
|
|
}
|
|
#endif
|
|
|
|
first_literal_run:
|
|
|
|
t = *ip++;
|
|
if (t >= 16)
|
|
goto match;
|
|
#if defined(COPY_DICT)
|
|
#if defined(LZO1Z)
|
|
m_off = (1 + M2_MAX_OFFSET) + (t << 6) + (*ip++ >> 2);
|
|
last_m_off = m_off;
|
|
#else
|
|
m_off = (1 + M2_MAX_OFFSET) + (t >> 2) + (*ip++ << 2);
|
|
#endif
|
|
NEED_OP(3);
|
|
t = 3; COPY_DICT(t,m_off)
|
|
#else
|
|
#if defined(LZO1Z)
|
|
t = (1 + M2_MAX_OFFSET) + (t << 6) + (*ip++ >> 2);
|
|
m_pos = op - t;
|
|
last_m_off = t;
|
|
#else
|
|
m_pos = op - (1 + M2_MAX_OFFSET);
|
|
m_pos -= t >> 2;
|
|
m_pos -= *ip++ << 2;
|
|
#endif
|
|
TEST_LOOKBEHIND(m_pos,out); NEED_OP(3);
|
|
*op++ = *m_pos++; *op++ = *m_pos++; *op++ = *m_pos;
|
|
#endif
|
|
goto match_done;
|
|
|
|
while (TEST_IP && TEST_OP)
|
|
{
|
|
match:
|
|
if (t >= 64)
|
|
{
|
|
#if defined(COPY_DICT)
|
|
#if defined(LZO1X)
|
|
m_off = 1 + ((t >> 2) & 7) + (*ip++ << 3);
|
|
t = (t >> 5) - 1;
|
|
#elif defined(LZO1Y)
|
|
m_off = 1 + ((t >> 2) & 3) + (*ip++ << 2);
|
|
t = (t >> 4) - 3;
|
|
#elif defined(LZO1Z)
|
|
m_off = t & 0x1f;
|
|
if (m_off >= 0x1c)
|
|
m_off = last_m_off;
|
|
else
|
|
{
|
|
m_off = 1 + (m_off << 6) + (*ip++ >> 2);
|
|
last_m_off = m_off;
|
|
}
|
|
t = (t >> 5) - 1;
|
|
#endif
|
|
#else
|
|
#if defined(LZO1X)
|
|
m_pos = op - 1;
|
|
m_pos -= (t >> 2) & 7;
|
|
m_pos -= *ip++ << 3;
|
|
t = (t >> 5) - 1;
|
|
#elif defined(LZO1Y)
|
|
m_pos = op - 1;
|
|
m_pos -= (t >> 2) & 3;
|
|
m_pos -= *ip++ << 2;
|
|
t = (t >> 4) - 3;
|
|
#elif defined(LZO1Z)
|
|
{
|
|
lzo_uint off = t & 0x1f;
|
|
m_pos = op;
|
|
if (off >= 0x1c)
|
|
{
|
|
assert(last_m_off > 0);
|
|
m_pos -= last_m_off;
|
|
}
|
|
else
|
|
{
|
|
off = 1 + (off << 6) + (*ip++ >> 2);
|
|
m_pos -= off;
|
|
last_m_off = off;
|
|
}
|
|
}
|
|
t = (t >> 5) - 1;
|
|
#endif
|
|
TEST_LOOKBEHIND(m_pos,out); assert(t > 0); NEED_OP(t+3-1);
|
|
goto copy_match;
|
|
#endif
|
|
}
|
|
else if (t >= 32)
|
|
{
|
|
t &= 31;
|
|
if (t == 0)
|
|
{
|
|
NEED_IP(1);
|
|
while (*ip == 0)
|
|
{
|
|
t += 255;
|
|
ip++;
|
|
NEED_IP(1);
|
|
}
|
|
t += 31 + *ip++;
|
|
}
|
|
#if defined(COPY_DICT)
|
|
#if defined(LZO1Z)
|
|
m_off = 1 + (ip[0] << 6) + (ip[1] >> 2);
|
|
last_m_off = m_off;
|
|
#else
|
|
m_off = 1 + (ip[0] >> 2) + (ip[1] << 6);
|
|
#endif
|
|
#else
|
|
#if defined(LZO1Z)
|
|
{
|
|
lzo_uint off = 1 + (ip[0] << 6) + (ip[1] >> 2);
|
|
m_pos = op - off;
|
|
last_m_off = off;
|
|
}
|
|
#elif defined(LZO_UNALIGNED_OK_2) && (LZO_BYTE_ORDER == LZO_LITTLE_ENDIAN)
|
|
m_pos = op - 1;
|
|
m_pos -= (* (const lzo_ushortp) ip) >> 2;
|
|
#else
|
|
m_pos = op - 1;
|
|
m_pos -= (ip[0] >> 2) + (ip[1] << 6);
|
|
#endif
|
|
#endif
|
|
ip += 2;
|
|
}
|
|
else if (t >= 16)
|
|
{
|
|
#if defined(COPY_DICT)
|
|
m_off = (t & 8) << 11;
|
|
#else
|
|
m_pos = op;
|
|
m_pos -= (t & 8) << 11;
|
|
#endif
|
|
t &= 7;
|
|
if (t == 0)
|
|
{
|
|
NEED_IP(1);
|
|
while (*ip == 0)
|
|
{
|
|
t += 255;
|
|
ip++;
|
|
NEED_IP(1);
|
|
}
|
|
t += 7 + *ip++;
|
|
}
|
|
#if defined(COPY_DICT)
|
|
#if defined(LZO1Z)
|
|
m_off += (ip[0] << 6) + (ip[1] >> 2);
|
|
#else
|
|
m_off += (ip[0] >> 2) + (ip[1] << 6);
|
|
#endif
|
|
ip += 2;
|
|
if (m_off == 0)
|
|
goto eof_found;
|
|
m_off += 0x4000;
|
|
#if defined(LZO1Z)
|
|
last_m_off = m_off;
|
|
#endif
|
|
#else
|
|
#if defined(LZO1Z)
|
|
m_pos -= (ip[0] << 6) + (ip[1] >> 2);
|
|
#elif defined(LZO_UNALIGNED_OK_2) && (LZO_BYTE_ORDER == LZO_LITTLE_ENDIAN)
|
|
m_pos -= (* (const lzo_ushortp) ip) >> 2;
|
|
#else
|
|
m_pos -= (ip[0] >> 2) + (ip[1] << 6);
|
|
#endif
|
|
ip += 2;
|
|
if (m_pos == op)
|
|
goto eof_found;
|
|
m_pos -= 0x4000;
|
|
#if defined(LZO1Z)
|
|
last_m_off = op - m_pos;
|
|
#endif
|
|
#endif
|
|
}
|
|
else
|
|
{
|
|
#if defined(COPY_DICT)
|
|
#if defined(LZO1Z)
|
|
m_off = 1 + (t << 6) + (*ip++ >> 2);
|
|
last_m_off = m_off;
|
|
#else
|
|
m_off = 1 + (t >> 2) + (*ip++ << 2);
|
|
#endif
|
|
NEED_OP(2);
|
|
t = 2; COPY_DICT(t,m_off)
|
|
#else
|
|
#if defined(LZO1Z)
|
|
t = 1 + (t << 6) + (*ip++ >> 2);
|
|
m_pos = op - t;
|
|
last_m_off = t;
|
|
#else
|
|
m_pos = op - 1;
|
|
m_pos -= t >> 2;
|
|
m_pos -= *ip++ << 2;
|
|
#endif
|
|
TEST_LOOKBEHIND(m_pos,out); NEED_OP(2);
|
|
*op++ = *m_pos++; *op++ = *m_pos;
|
|
#endif
|
|
goto match_done;
|
|
}
|
|
|
|
#if defined(COPY_DICT)
|
|
|
|
NEED_OP(t+3-1);
|
|
t += 3-1; COPY_DICT(t,m_off)
|
|
|
|
#else
|
|
|
|
TEST_LOOKBEHIND(m_pos,out); assert(t > 0); NEED_OP(t+3-1);
|
|
#if defined(LZO_UNALIGNED_OK_4) || defined(LZO_ALIGNED_OK_4)
|
|
#if !defined(LZO_UNALIGNED_OK_4)
|
|
if (t >= 2 * 4 - (3 - 1) && PTR_ALIGNED2_4(op,m_pos))
|
|
{
|
|
assert((op - m_pos) >= 4);
|
|
#else
|
|
if (t >= 2 * 4 - (3 - 1) && (op - m_pos) >= 4)
|
|
{
|
|
#endif
|
|
COPY4(op,m_pos);
|
|
op += 4; m_pos += 4; t -= 4 - (3 - 1);
|
|
do {
|
|
COPY4(op,m_pos);
|
|
op += 4; m_pos += 4; t -= 4;
|
|
} while (t >= 4);
|
|
if (t > 0) do *op++ = *m_pos++; while (--t > 0);
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
copy_match:
|
|
*op++ = *m_pos++; *op++ = *m_pos++;
|
|
do *op++ = *m_pos++; while (--t > 0);
|
|
}
|
|
|
|
#endif
|
|
|
|
match_done:
|
|
#if defined(LZO1Z)
|
|
t = ip[-1] & 3;
|
|
#else
|
|
t = ip[-2] & 3;
|
|
#endif
|
|
if (t == 0)
|
|
break;
|
|
|
|
match_next:
|
|
assert(t > 0); NEED_OP(t); NEED_IP(t+1);
|
|
do *op++ = *ip++; while (--t > 0);
|
|
t = *ip++;
|
|
}
|
|
}
|
|
|
|
#if defined(HAVE_TEST_IP) || defined(HAVE_TEST_OP)
|
|
*out_len = op - out;
|
|
return LZO_E_EOF_NOT_FOUND;
|
|
#endif
|
|
|
|
eof_found:
|
|
assert(t == 1);
|
|
*out_len = op - out;
|
|
return (ip == ip_end ? LZO_E_OK :
|
|
(ip < ip_end ? LZO_E_INPUT_NOT_CONSUMED : LZO_E_INPUT_OVERRUN));
|
|
|
|
#if defined(HAVE_NEED_IP)
|
|
input_overrun:
|
|
*out_len = op - out;
|
|
return LZO_E_INPUT_OVERRUN;
|
|
#endif
|
|
|
|
#if defined(HAVE_NEED_OP)
|
|
output_overrun:
|
|
*out_len = op - out;
|
|
return LZO_E_OUTPUT_OVERRUN;
|
|
#endif
|
|
|
|
#if defined(LZO_TEST_DECOMPRESS_OVERRUN_LOOKBEHIND)
|
|
lookbehind_overrun:
|
|
*out_len = op - out;
|
|
return LZO_E_LOOKBEHIND_OVERRUN;
|
|
#endif
|
|
}
|
|
|
|
#define LZO_TEST_DECOMPRESS_OVERRUN
|
|
#undef DO_DECOMPRESS
|
|
#define DO_DECOMPRESS lzo1x_decompress_safe
|
|
|
|
#if defined(LZO_TEST_DECOMPRESS_OVERRUN)
|
|
# if !defined(LZO_TEST_DECOMPRESS_OVERRUN_INPUT)
|
|
# define LZO_TEST_DECOMPRESS_OVERRUN_INPUT 2
|
|
# endif
|
|
# if !defined(LZO_TEST_DECOMPRESS_OVERRUN_OUTPUT)
|
|
# define LZO_TEST_DECOMPRESS_OVERRUN_OUTPUT 2
|
|
# endif
|
|
# if !defined(LZO_TEST_DECOMPRESS_OVERRUN_LOOKBEHIND)
|
|
# define LZO_TEST_DECOMPRESS_OVERRUN_LOOKBEHIND
|
|
# endif
|
|
#endif
|
|
|
|
#undef TEST_IP
|
|
#undef TEST_OP
|
|
#undef TEST_LOOKBEHIND
|
|
#undef NEED_IP
|
|
#undef NEED_OP
|
|
#undef HAVE_TEST_IP
|
|
#undef HAVE_TEST_OP
|
|
#undef HAVE_NEED_IP
|
|
#undef HAVE_NEED_OP
|
|
#undef HAVE_ANY_IP
|
|
#undef HAVE_ANY_OP
|
|
|
|
#if defined(LZO_TEST_DECOMPRESS_OVERRUN_INPUT)
|
|
# if (LZO_TEST_DECOMPRESS_OVERRUN_INPUT >= 1)
|
|
# define TEST_IP (ip < ip_end)
|
|
# endif
|
|
# if (LZO_TEST_DECOMPRESS_OVERRUN_INPUT >= 2)
|
|
# define NEED_IP(x) \
|
|
if ((lzo_uint)(ip_end - ip) < (lzo_uint)(x)) goto input_overrun
|
|
# endif
|
|
#endif
|
|
|
|
#if defined(LZO_TEST_DECOMPRESS_OVERRUN_OUTPUT)
|
|
# if (LZO_TEST_DECOMPRESS_OVERRUN_OUTPUT >= 1)
|
|
# define TEST_OP (op <= op_end)
|
|
# endif
|
|
# if (LZO_TEST_DECOMPRESS_OVERRUN_OUTPUT >= 2)
|
|
# undef TEST_OP
|
|
# define NEED_OP(x) \
|
|
if ((lzo_uint)(op_end - op) < (lzo_uint)(x)) goto output_overrun
|
|
# endif
|
|
#endif
|
|
|
|
#if defined(LZO_TEST_DECOMPRESS_OVERRUN_LOOKBEHIND)
|
|
# define TEST_LOOKBEHIND(m_pos,out) if (m_pos < out) goto lookbehind_overrun
|
|
#else
|
|
# define TEST_LOOKBEHIND(m_pos,op) ((void) 0)
|
|
#endif
|
|
|
|
#if !defined(LZO_EOF_CODE) && !defined(TEST_IP)
|
|
# define TEST_IP (ip < ip_end)
|
|
#endif
|
|
|
|
#if defined(TEST_IP)
|
|
# define HAVE_TEST_IP
|
|
#else
|
|
# define TEST_IP 1
|
|
#endif
|
|
#if defined(TEST_OP)
|
|
# define HAVE_TEST_OP
|
|
#else
|
|
# define TEST_OP 1
|
|
#endif
|
|
|
|
#if defined(NEED_IP)
|
|
# define HAVE_NEED_IP
|
|
#else
|
|
# define NEED_IP(x) ((void) 0)
|
|
#endif
|
|
#if defined(NEED_OP)
|
|
# define HAVE_NEED_OP
|
|
#else
|
|
# define NEED_OP(x) ((void) 0)
|
|
#endif
|
|
|
|
#if defined(HAVE_TEST_IP) || defined(HAVE_NEED_IP)
|
|
# define HAVE_ANY_IP
|
|
#endif
|
|
#if defined(HAVE_TEST_OP) || defined(HAVE_NEED_OP)
|
|
# define HAVE_ANY_OP
|
|
#endif
|
|
|
|
#undef __COPY4
|
|
#define __COPY4(dst,src) * (lzo_uint32p)(dst) = * (const lzo_uint32p)(src)
|
|
|
|
#undef COPY4
|
|
#if defined(LZO_UNALIGNED_OK_4)
|
|
# define COPY4(dst,src) __COPY4(dst,src)
|
|
#elif defined(LZO_ALIGNED_OK_4)
|
|
# define COPY4(dst,src) __COPY4((lzo_ptr_t)(dst),(lzo_ptr_t)(src))
|
|
#endif
|
|
|
|
#if defined(DO_DECOMPRESS)
|
|
LZO_PUBLIC(int)
|
|
DO_DECOMPRESS ( const lzo_byte *in , lzo_uint in_len,
|
|
lzo_byte *out, lzo_uintp out_len,
|
|
lzo_voidp wrkmem )
|
|
#endif
|
|
{
|
|
register lzo_byte *op;
|
|
register const lzo_byte *ip;
|
|
register lzo_uint t;
|
|
#if defined(COPY_DICT)
|
|
lzo_uint m_off;
|
|
const lzo_byte *dict_end;
|
|
#else
|
|
register const lzo_byte *m_pos;
|
|
#endif
|
|
|
|
const lzo_byte * const ip_end = in + in_len;
|
|
#if defined(HAVE_ANY_OP)
|
|
lzo_byte * const op_end = out + *out_len;
|
|
#endif
|
|
#if defined(LZO1Z)
|
|
lzo_uint last_m_off = 0;
|
|
#endif
|
|
|
|
LZO_UNUSED(wrkmem);
|
|
|
|
#if defined(__LZO_QUERY_DECOMPRESS)
|
|
if (__LZO_IS_DECOMPRESS_QUERY(in,in_len,out,out_len,wrkmem))
|
|
return __LZO_QUERY_DECOMPRESS(in,in_len,out,out_len,wrkmem,0,0);
|
|
#endif
|
|
|
|
#if defined(COPY_DICT)
|
|
if (dict)
|
|
{
|
|
if (dict_len > M4_MAX_OFFSET)
|
|
{
|
|
dict += dict_len - M4_MAX_OFFSET;
|
|
dict_len = M4_MAX_OFFSET;
|
|
}
|
|
dict_end = dict + dict_len;
|
|
}
|
|
else
|
|
{
|
|
dict_len = 0;
|
|
dict_end = NULL;
|
|
}
|
|
#endif
|
|
|
|
*out_len = 0;
|
|
|
|
op = out;
|
|
ip = in;
|
|
|
|
if (*ip > 17)
|
|
{
|
|
t = *ip++ - 17;
|
|
if (t < 4)
|
|
goto match_next;
|
|
assert(t > 0); NEED_OP(t); NEED_IP(t+1);
|
|
do *op++ = *ip++; while (--t > 0);
|
|
goto first_literal_run;
|
|
}
|
|
|
|
while (TEST_IP && TEST_OP)
|
|
{
|
|
t = *ip++;
|
|
if (t >= 16)
|
|
goto match;
|
|
if (t == 0)
|
|
{
|
|
NEED_IP(1);
|
|
while (*ip == 0)
|
|
{
|
|
t += 255;
|
|
ip++;
|
|
NEED_IP(1);
|
|
}
|
|
t += 15 + *ip++;
|
|
}
|
|
assert(t > 0); NEED_OP(t+3); NEED_IP(t+4);
|
|
#if defined(LZO_UNALIGNED_OK_4) || defined(LZO_ALIGNED_OK_4)
|
|
#if !defined(LZO_UNALIGNED_OK_4)
|
|
if (PTR_ALIGNED2_4(op,ip))
|
|
{
|
|
#endif
|
|
COPY4(op,ip);
|
|
op += 4; ip += 4;
|
|
if (--t > 0)
|
|
{
|
|
if (t >= 4)
|
|
{
|
|
do {
|
|
COPY4(op,ip);
|
|
op += 4; ip += 4; t -= 4;
|
|
} while (t >= 4);
|
|
if (t > 0) do *op++ = *ip++; while (--t > 0);
|
|
}
|
|
else
|
|
do *op++ = *ip++; while (--t > 0);
|
|
}
|
|
#if !defined(LZO_UNALIGNED_OK_4)
|
|
}
|
|
else
|
|
#endif
|
|
#endif
|
|
#if !defined(LZO_UNALIGNED_OK_4)
|
|
{
|
|
*op++ = *ip++; *op++ = *ip++; *op++ = *ip++;
|
|
do *op++ = *ip++; while (--t > 0);
|
|
}
|
|
#endif
|
|
|
|
first_literal_run:
|
|
|
|
t = *ip++;
|
|
if (t >= 16)
|
|
goto match;
|
|
#if defined(COPY_DICT)
|
|
#if defined(LZO1Z)
|
|
m_off = (1 + M2_MAX_OFFSET) + (t << 6) + (*ip++ >> 2);
|
|
last_m_off = m_off;
|
|
#else
|
|
m_off = (1 + M2_MAX_OFFSET) + (t >> 2) + (*ip++ << 2);
|
|
#endif
|
|
NEED_OP(3);
|
|
t = 3; COPY_DICT(t,m_off)
|
|
#else
|
|
#if defined(LZO1Z)
|
|
t = (1 + M2_MAX_OFFSET) + (t << 6) + (*ip++ >> 2);
|
|
m_pos = op - t;
|
|
last_m_off = t;
|
|
#else
|
|
m_pos = op - (1 + M2_MAX_OFFSET);
|
|
m_pos -= t >> 2;
|
|
m_pos -= *ip++ << 2;
|
|
#endif
|
|
TEST_LOOKBEHIND(m_pos,out); NEED_OP(3);
|
|
*op++ = *m_pos++; *op++ = *m_pos++; *op++ = *m_pos;
|
|
#endif
|
|
goto match_done;
|
|
|
|
while (TEST_IP && TEST_OP)
|
|
{
|
|
match:
|
|
if (t >= 64)
|
|
{
|
|
#if defined(COPY_DICT)
|
|
#if defined(LZO1X)
|
|
m_off = 1 + ((t >> 2) & 7) + (*ip++ << 3);
|
|
t = (t >> 5) - 1;
|
|
#elif defined(LZO1Y)
|
|
m_off = 1 + ((t >> 2) & 3) + (*ip++ << 2);
|
|
t = (t >> 4) - 3;
|
|
#elif defined(LZO1Z)
|
|
m_off = t & 0x1f;
|
|
if (m_off >= 0x1c)
|
|
m_off = last_m_off;
|
|
else
|
|
{
|
|
m_off = 1 + (m_off << 6) + (*ip++ >> 2);
|
|
last_m_off = m_off;
|
|
}
|
|
t = (t >> 5) - 1;
|
|
#endif
|
|
#else
|
|
#if defined(LZO1X)
|
|
m_pos = op - 1;
|
|
m_pos -= (t >> 2) & 7;
|
|
m_pos -= *ip++ << 3;
|
|
t = (t >> 5) - 1;
|
|
#elif defined(LZO1Y)
|
|
m_pos = op - 1;
|
|
m_pos -= (t >> 2) & 3;
|
|
m_pos -= *ip++ << 2;
|
|
t = (t >> 4) - 3;
|
|
#elif defined(LZO1Z)
|
|
{
|
|
lzo_uint off = t & 0x1f;
|
|
m_pos = op;
|
|
if (off >= 0x1c)
|
|
{
|
|
assert(last_m_off > 0);
|
|
m_pos -= last_m_off;
|
|
}
|
|
else
|
|
{
|
|
off = 1 + (off << 6) + (*ip++ >> 2);
|
|
m_pos -= off;
|
|
last_m_off = off;
|
|
}
|
|
}
|
|
t = (t >> 5) - 1;
|
|
#endif
|
|
TEST_LOOKBEHIND(m_pos,out); assert(t > 0); NEED_OP(t+3-1);
|
|
goto copy_match;
|
|
#endif
|
|
}
|
|
else if (t >= 32)
|
|
{
|
|
t &= 31;
|
|
if (t == 0)
|
|
{
|
|
NEED_IP(1);
|
|
while (*ip == 0)
|
|
{
|
|
t += 255;
|
|
ip++;
|
|
NEED_IP(1);
|
|
}
|
|
t += 31 + *ip++;
|
|
}
|
|
#if defined(COPY_DICT)
|
|
#if defined(LZO1Z)
|
|
m_off = 1 + (ip[0] << 6) + (ip[1] >> 2);
|
|
last_m_off = m_off;
|
|
#else
|
|
m_off = 1 + (ip[0] >> 2) + (ip[1] << 6);
|
|
#endif
|
|
#else
|
|
#if defined(LZO1Z)
|
|
{
|
|
lzo_uint off = 1 + (ip[0] << 6) + (ip[1] >> 2);
|
|
m_pos = op - off;
|
|
last_m_off = off;
|
|
}
|
|
#elif defined(LZO_UNALIGNED_OK_2) && (LZO_BYTE_ORDER == LZO_LITTLE_ENDIAN)
|
|
m_pos = op - 1;
|
|
m_pos -= (* (const lzo_ushortp) ip) >> 2;
|
|
#else
|
|
m_pos = op - 1;
|
|
m_pos -= (ip[0] >> 2) + (ip[1] << 6);
|
|
#endif
|
|
#endif
|
|
ip += 2;
|
|
}
|
|
else if (t >= 16)
|
|
{
|
|
#if defined(COPY_DICT)
|
|
m_off = (t & 8) << 11;
|
|
#else
|
|
m_pos = op;
|
|
m_pos -= (t & 8) << 11;
|
|
#endif
|
|
t &= 7;
|
|
if (t == 0)
|
|
{
|
|
NEED_IP(1);
|
|
while (*ip == 0)
|
|
{
|
|
t += 255;
|
|
ip++;
|
|
NEED_IP(1);
|
|
}
|
|
t += 7 + *ip++;
|
|
}
|
|
#if defined(COPY_DICT)
|
|
#if defined(LZO1Z)
|
|
m_off += (ip[0] << 6) + (ip[1] >> 2);
|
|
#else
|
|
m_off += (ip[0] >> 2) + (ip[1] << 6);
|
|
#endif
|
|
ip += 2;
|
|
if (m_off == 0)
|
|
goto eof_found;
|
|
m_off += 0x4000;
|
|
#if defined(LZO1Z)
|
|
last_m_off = m_off;
|
|
#endif
|
|
#else
|
|
#if defined(LZO1Z)
|
|
m_pos -= (ip[0] << 6) + (ip[1] >> 2);
|
|
#elif defined(LZO_UNALIGNED_OK_2) && (LZO_BYTE_ORDER == LZO_LITTLE_ENDIAN)
|
|
m_pos -= (* (const lzo_ushortp) ip) >> 2;
|
|
#else
|
|
m_pos -= (ip[0] >> 2) + (ip[1] << 6);
|
|
#endif
|
|
ip += 2;
|
|
if (m_pos == op)
|
|
goto eof_found;
|
|
m_pos -= 0x4000;
|
|
#if defined(LZO1Z)
|
|
last_m_off = op - m_pos;
|
|
#endif
|
|
#endif
|
|
}
|
|
else
|
|
{
|
|
#if defined(COPY_DICT)
|
|
#if defined(LZO1Z)
|
|
m_off = 1 + (t << 6) + (*ip++ >> 2);
|
|
last_m_off = m_off;
|
|
#else
|
|
m_off = 1 + (t >> 2) + (*ip++ << 2);
|
|
#endif
|
|
NEED_OP(2);
|
|
t = 2; COPY_DICT(t,m_off)
|
|
#else
|
|
#if defined(LZO1Z)
|
|
t = 1 + (t << 6) + (*ip++ >> 2);
|
|
m_pos = op - t;
|
|
last_m_off = t;
|
|
#else
|
|
m_pos = op - 1;
|
|
m_pos -= t >> 2;
|
|
m_pos -= *ip++ << 2;
|
|
#endif
|
|
TEST_LOOKBEHIND(m_pos,out); NEED_OP(2);
|
|
*op++ = *m_pos++; *op++ = *m_pos;
|
|
#endif
|
|
goto match_done;
|
|
}
|
|
|
|
#if defined(COPY_DICT)
|
|
|
|
NEED_OP(t+3-1);
|
|
t += 3-1; COPY_DICT(t,m_off)
|
|
|
|
#else
|
|
|
|
TEST_LOOKBEHIND(m_pos,out); assert(t > 0); NEED_OP(t+3-1);
|
|
#if defined(LZO_UNALIGNED_OK_4) || defined(LZO_ALIGNED_OK_4)
|
|
#if !defined(LZO_UNALIGNED_OK_4)
|
|
if (t >= 2 * 4 - (3 - 1) && PTR_ALIGNED2_4(op,m_pos))
|
|
{
|
|
assert((op - m_pos) >= 4);
|
|
#else
|
|
if (t >= 2 * 4 - (3 - 1) && (op - m_pos) >= 4)
|
|
{
|
|
#endif
|
|
COPY4(op,m_pos);
|
|
op += 4; m_pos += 4; t -= 4 - (3 - 1);
|
|
do {
|
|
COPY4(op,m_pos);
|
|
op += 4; m_pos += 4; t -= 4;
|
|
} while (t >= 4);
|
|
if (t > 0) do *op++ = *m_pos++; while (--t > 0);
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
copy_match:
|
|
*op++ = *m_pos++; *op++ = *m_pos++;
|
|
do *op++ = *m_pos++; while (--t > 0);
|
|
}
|
|
|
|
#endif
|
|
|
|
match_done:
|
|
#if defined(LZO1Z)
|
|
t = ip[-1] & 3;
|
|
#else
|
|
t = ip[-2] & 3;
|
|
#endif
|
|
if (t == 0)
|
|
break;
|
|
|
|
match_next:
|
|
assert(t > 0); NEED_OP(t); NEED_IP(t+1);
|
|
do *op++ = *ip++; while (--t > 0);
|
|
t = *ip++;
|
|
}
|
|
}
|
|
|
|
#if defined(HAVE_TEST_IP) || defined(HAVE_TEST_OP)
|
|
*out_len = op - out;
|
|
return LZO_E_EOF_NOT_FOUND;
|
|
#endif
|
|
|
|
eof_found:
|
|
assert(t == 1);
|
|
*out_len = op - out;
|
|
return (ip == ip_end ? LZO_E_OK :
|
|
(ip < ip_end ? LZO_E_INPUT_NOT_CONSUMED : LZO_E_INPUT_OVERRUN));
|
|
|
|
#if defined(HAVE_NEED_IP)
|
|
input_overrun:
|
|
*out_len = op - out;
|
|
return LZO_E_INPUT_OVERRUN;
|
|
#endif
|
|
|
|
#if defined(HAVE_NEED_OP)
|
|
output_overrun:
|
|
*out_len = op - out;
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return LZO_E_OUTPUT_OVERRUN;
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#endif
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#if defined(LZO_TEST_DECOMPRESS_OVERRUN_LOOKBEHIND)
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lookbehind_overrun:
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*out_len = op - out;
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|
return LZO_E_LOOKBEHIND_OVERRUN;
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|
#endif
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}
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/***** End of minilzo.c *****/
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