From f96e56733ab3e3ce5c79c27c673c746af1519a86 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Ren=C3=A9=20Scharfe?= Date: Sat, 22 May 2010 23:35:07 +0200 Subject: [PATCH] grep: use REG_STARTEND for all matching if available Refactor REG_STARTEND handling inlook_ahead() into a new helper, regmatch(), and use it for line matching, too. This allows regex matching beyond NUL characters if regexec() supports the flag. NUL characters themselves are not matched in any way, though. Signed-off-by: Rene Scharfe Signed-off-by: Junio C Hamano --- grep.c | 24 ++++++++++++++---------- t/t7008-grep-binary.sh | 10 ++++++++++ 2 files changed, 24 insertions(+), 10 deletions(-) diff --git a/grep.c b/grep.c index b95803bbb..70a776f6f 100644 --- a/grep.c +++ b/grep.c @@ -356,6 +356,17 @@ static int fixmatch(const char *pattern, char *line, char *eol, } } +static int regmatch(const regex_t *preg, char *line, char *eol, + regmatch_t *match, int eflags) +{ +#ifdef REG_STARTEND + match->rm_so = 0; + match->rm_eo = eol - line; + eflags |= REG_STARTEND; +#endif + return regexec(preg, line, 1, match, eflags); +} + static int strip_timestamp(char *bol, char **eol_p) { char *eol = *eol_p; @@ -408,7 +419,7 @@ static int match_one_pattern(struct grep_pat *p, char *bol, char *eol, if (p->fixed) hit = !fixmatch(p->pattern, bol, eol, p->ignore_case, pmatch); else - hit = !regexec(&p->regexp, bol, 1, pmatch, eflags); + hit = !regmatch(&p->regexp, bol, eol, pmatch, eflags); if (hit && p->word_regexp) { if ((pmatch[0].rm_so < 0) || @@ -735,15 +746,8 @@ static int look_ahead(struct grep_opt *opt, 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; - hit = !regexec(&p->regexp, bol, 1, &m, REG_STARTEND); -#else - hit = !regexec(&p->regexp, bol, 1, &m, 0); -#endif - } + } else + hit = !regmatch(&p->regexp, bol, bol + *left_p, &m, 0); if (!hit || m.rm_so < 0 || m.rm_eo < 0) continue; if (earliest < 0 || m.rm_so < earliest) diff --git a/t/t7008-grep-binary.sh b/t/t7008-grep-binary.sh index 9660842c4..4f5e74fed 100755 --- a/t/t7008-grep-binary.sh +++ b/t/t7008-grep-binary.sh @@ -59,4 +59,14 @@ test_expect_success 'git grep -Fi iLE a' ' git grep -Fi iLE a ' +# This test actually passes on platforms where regexec() supports the +# flag REG_STARTEND. +test_expect_failure 'git grep ile a' ' + git grep ile a +' + +test_expect_failure 'git grep .fi a' ' + git grep .fi a +' + test_done -- 2.26.2