liblzma: Use lzma_memcmplen() in normal mode of LZMA.
Two locations were not changed yet because the simplest change
assumes that the initial "len" may be greater than "limit".
diff --git a/src/liblzma/lzma/lzma_encoder_optimum_normal.c b/src/liblzma/lzma/lzma_encoder_optimum_normal.c
index 0dd5f73..a360579 100644
--- a/src/liblzma/lzma/lzma_encoder_optimum_normal.c
+++ b/src/liblzma/lzma/lzma_encoder_optimum_normal.c
@@ -11,6 +11,7 @@
#include "lzma_encoder_private.h"
#include "fastpos.h"
+#include "memcmplen.h"
////////////
@@ -305,13 +306,9 @@
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 @@
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 @@
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;
