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grep: use memmem() for fixed string search

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Allow searching beyond NUL characters by using memmem() instead of
strstr().

Signed-off-by: Rene Scharfe <rene.scharfe@lsrfire.ath.cx>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
This commit is contained in:
René Scharfe 2010-05-22 23:32:43 +02:00 committed by Junio C Hamano
parent 321ffcc055
commit 1baddf4b37
2 changed files with 13 additions and 7 deletions
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16
grep.c
View file

@ -329,14 +329,15 @@ static void show_name(struct grep_opt *opt, const char *name)
opt->output(opt, opt->null_following_name ? "\0" : "\n", 1);
}
static int fixmatch(const char *pattern, char *line, int ignore_case, regmatch_t *match)
static int fixmatch(const char *pattern, char *line, char *eol,
int ignore_case, regmatch_t *match)
{
char *hit;
if (ignore_case)
hit = strcasestr(line, pattern);
else
hit = strstr(line, pattern);
hit = memmem(line, eol - line, pattern, strlen(pattern));
if (!hit) {
match->rm_so = match->rm_eo = -1;
@ -399,7 +400,7 @@ static int match_one_pattern(struct grep_pat *p, char *bol, char *eol,
again:
if (p->fixed)
hit = !fixmatch(p->pattern, bol, p->ignore_case, pmatch);
hit = !fixmatch(p->pattern, bol, eol, p->ignore_case, pmatch);
else
hit = !regexec(&p->regexp, bol, 1, pmatch, eflags);
@ -725,9 +726,10 @@ static int look_ahead(struct grep_opt *opt,
int hit;
regmatch_t m;
if (p->fixed)
hit = !fixmatch(p->pattern, bol, p->ignore_case, &m);
else {
if (p->fixed) {
hit = !fixmatch(p->pattern, bol, bol + *left_p,
p->ignore_case, &m);
} else {
#ifdef REG_STARTEND
m.rm_so = 0;
m.rm_eo = *left_p;

4
t/t7008-grep-binary.sh
View file

@ -51,4 +51,8 @@ test_expect_success 'git grep -q ina a' '
test_cmp expect actual
'
test_expect_success 'git grep -F ile a' '
git grep -F ile a
'
test_done