BSD and glibc have an extension to regexec which takes a buffer + length pair
instead of a NUL-terminated string. Since we already have the length computed
this can save us a strlen call inside regexec.
Signed-off-by: Benjamin Kramer <benny.kra@xxxxxxxxxxxxxx>
Acked-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
---
Resend of my previous patch with SOB and correct title.
grep.c | 9 ++++++++-
1 files changed, 8 insertions(+), 1 deletions(-)
diff --git a/grep.c b/grep.c
index 8e1f7de..452c2cb 100644
--- a/grep.c
+++ b/grep.c
@@ -640,8 +640,15 @@ static int look_ahead(struct grep_opt *opt,
if (p->fixed)
hit = !fixmatch(p->pattern, bol, p->ignore_case, &m);
- else
+ else {
+#ifdef REG_STARTEND
+ m.rm_so = 0;
+ m.rm_eo = *left_p;
+ hit = !regexec(&p->regexp, bol, 1, &m, REG_STARTEND);
+#else
hit = !regexec(&p->regexp, bol, 1, &m, 0);
+#endif
+ }
if (!hit || m.rm_so < 0 || m.rm_eo < 0)
continue;
if (earliest < 0 || m.rm_so < earliest)
--
1.7.0.rc0.12.gc33c3
--
To unsubscribe from this list: send the line "unsubscribe git" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html