diff options
Diffstat (limited to 'src/lzo_mchw.ch')
| -rw-r--r-- | src/lzo_mchw.ch | 45 |
1 files changed, 14 insertions, 31 deletions
diff --git a/src/lzo_mchw.ch b/src/lzo_mchw.ch index a8c4fec..8273612 100644 --- a/src/lzo_mchw.ch +++ b/src/lzo_mchw.ch @@ -2,19 +2,7 @@ This file is part of the LZO real-time data compression library. - Copyright (C) 2008 Markus Franz Xaver Johannes Oberhumer - Copyright (C) 2007 Markus Franz Xaver Johannes Oberhumer - Copyright (C) 2006 Markus Franz Xaver Johannes Oberhumer - Copyright (C) 2005 Markus Franz Xaver Johannes Oberhumer - Copyright (C) 2004 Markus Franz Xaver Johannes Oberhumer - Copyright (C) 2003 Markus Franz Xaver Johannes Oberhumer - Copyright (C) 2002 Markus Franz Xaver Johannes Oberhumer - Copyright (C) 2001 Markus Franz Xaver Johannes Oberhumer - Copyright (C) 2000 Markus Franz Xaver Johannes Oberhumer - Copyright (C) 1999 Markus Franz Xaver Johannes Oberhumer - Copyright (C) 1998 Markus Franz Xaver Johannes Oberhumer - Copyright (C) 1997 Markus Franz Xaver Johannes Oberhumer - Copyright (C) 1996 Markus Franz Xaver Johannes Oberhumer + Copyright (C) 1996-2014 Markus Franz Xaver Johannes Oberhumer All Rights Reserved. The LZO library is free software; you can redistribute it and/or @@ -44,7 +32,7 @@ typedef struct { - int init; + unsigned init; lzo_uint look; /* bytes in lookahead buffer */ @@ -112,15 +100,7 @@ typedef struct LZO_COMPRESS_T; -#if (LZO_CC_BORLANDC && LZO_ARCH_I086) && (__BORLANDC__ < 0x0450) - /* work around a Borland C 3.1 bug */ -# define getbyte(c) ((c).ip < (c).in_end ? (c).ip +=1, (c).ip[-1] : (-1)) -#elif defined(__TURBOC__) && defined(__TOS__) - /* work around a bug in Turbo C / Pure C (Atari ST) */ -# define getbyte(c) ((c).ip < (c).in_end ? (int)(unsigned) *((c).ip)++ : (-1)) -#else -# define getbyte(c) ((c).ip < (c).in_end ? *((c).ip)++ : (-1)) -#endif +#define getbyte(c) ((c).ip < (c).in_end ? *((c).ip)++ : (-1)) #include "lzo_swd.ch" @@ -132,7 +112,7 @@ LZO_COMPRESS_T; static int init_match ( LZO_COMPRESS_T *c, lzo_swd_p s, const lzo_bytep dict, lzo_uint dict_len, - lzo_uint32 flags ) + lzo_uint32_t flags ) { int r; @@ -148,11 +128,14 @@ init_match ( LZO_COMPRESS_T *c, lzo_swd_p s, c->lazy = 0; r = swd_init(s,dict,dict_len); - if (r != 0) + if (r != LZO_E_OK) + { + swd_exit(s); return r; + } s->use_best_off = (flags & 1) ? 1 : 0; - return r; + return LZO_E_OK; } @@ -178,8 +161,8 @@ find_match ( LZO_COMPRESS_T *c, lzo_swd_p s, c->textsize += this_len - skip; } - s->m_len = 1; - s->m_len = THRESHOLD; + s->m_len = SWD_THRESHOLD; + s->m_off = 0; #ifdef SWD_BEST_OFF if (s->use_best_off) lzo_memset(s->best_pos,0,sizeof(s->best_pos)); @@ -204,14 +187,14 @@ find_match ( LZO_COMPRESS_T *c, lzo_swd_p s, #if 0 /* brute force match search */ - if (c->m_len > THRESHOLD && c->m_len + 1 <= c->look) + if (c->m_len > SWD_THRESHOLD && c->m_len + 1 <= c->look) { const lzo_bytep ip = c->bp; const lzo_bytep m = c->bp - c->m_off; const lzo_bytep in = c->in; - if (ip - in > N) - in = ip - N; + if (ip - in > s->swd_n) + in = ip - s->swd_n; for (;;) { while (*in != *ip) |