AuroraMiddleware/liblzma
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

liblzma: Use lzma_memcmplen() in normal mode of LZMA.

Browse Source 
Two locations were not changed yet because the simplest change
assumes that the initial "len" may be greater than "limit".
This commit is contained in:
Lasse Collin 2014-07-25 22:38:28 +03:00
parent f48fce093b
commit 544aaa3d13
1 changed files with 5 additions and 15 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
src/liblzma/lzma/lzma_encoder_optimum_normal.c
View File

@ -11,6 +11,7 @@
#include "lzma_encoder_private.h"
#include "fastpos.h"
#include "memcmplen.h"
////////////
@ -305,13 +306,9 @@ helper1(lzma_coder *restrict coder, lzma_mf *restrict mf,
continue;
}
uint32_t len_test;
for (len_test = 2; len_test < buf_avail
&& buf[len_test] == buf_back[len_test];
++len_test) ;
rep_lens[i] = lzma_memcmplen(buf, buf_back, 2, buf_avail);
rep_lens[i] = len_test;
if (len_test > rep_lens[rep_max_index])
if (rep_lens[i] > rep_lens[rep_max_index])
rep_max_index = i;
}
@ -568,11 +565,7 @@ helper2(lzma_coder *coder, uint32_t *reps, const uint8_t *buf,
const uint8_t *const buf_back = buf - reps[0] - 1;
const uint32_t limit = my_min(buf_avail_full, nice_len + 1);
uint32_t len_test = 1;
while (len_test < limit && buf[len_test] == buf_back[len_test])
++len_test;
--len_test;
const uint32_t len_test = lzma_memcmplen(buf, buf_back, 1, limit) - 1;
if (len_test >= 2) {
lzma_lzma_state state_2 = state;
@ -612,10 +605,7 @@ helper2(lzma_coder *coder, uint32_t *reps, const uint8_t *buf,
if (not_equal_16(buf, buf_back))
continue;
uint32_t len_test;
for (len_test = 2; len_test < buf_avail
&& buf[len_test] == buf_back[len_test];
++len_test) ;
uint32_t len_test = lzma_memcmplen(buf, buf_back, 2, buf_avail);
while (len_end < cur + len_test)
coder->opts[++len_end].price = RC_INFINITY_PRICE;