From c5c31d3381d11903c01d51aff4437fe9f76d0268 Mon Sep 17 00:00:00 2001 From: Junio C Hamano Date: Wed, 3 Oct 2012 14:47:48 -0700 Subject: grep: move pattern-type bits support to top-level grep.[ch] Switching between -E/-G/-P/-F correctly needs a lot more than just flipping opt->regflags bit these days, and we have a nice helper function buried in builtin/grep.c for the sole use of "git grep". Extract it so that "log --grep" family can also use it. Signed-off-by: Junio C Hamano --- grep.c | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) (limited to 'grep.c') diff --git a/grep.c b/grep.c index 621e6ec22e..279a55933c 100644 --- a/grep.c +++ b/grep.c @@ -137,6 +137,48 @@ void grep_init(struct grep_opt *opt, const char *prefix) strcpy(opt->color_sep, def->color_sep); } +void grep_commit_pattern_type(enum grep_pattern_type pattern_type, struct grep_opt *opt) +{ + if (pattern_type != GREP_PATTERN_TYPE_UNSPECIFIED) + grep_set_pattern_type_option(pattern_type, opt); + else if (opt->pattern_type_option != GREP_PATTERN_TYPE_UNSPECIFIED) + grep_set_pattern_type_option(opt->pattern_type_option, opt); + else if (opt->extended_regexp_option) + grep_set_pattern_type_option(GREP_PATTERN_TYPE_ERE, opt); +} + +void grep_set_pattern_type_option(enum grep_pattern_type pattern_type, struct grep_opt *opt) +{ + switch (pattern_type) { + case GREP_PATTERN_TYPE_UNSPECIFIED: + /* fall through */ + + case GREP_PATTERN_TYPE_BRE: + opt->fixed = 0; + opt->pcre = 0; + opt->regflags &= ~REG_EXTENDED; + break; + + case GREP_PATTERN_TYPE_ERE: + opt->fixed = 0; + opt->pcre = 0; + opt->regflags |= REG_EXTENDED; + break; + + case GREP_PATTERN_TYPE_FIXED: + opt->fixed = 1; + opt->pcre = 0; + opt->regflags &= ~REG_EXTENDED; + break; + + case GREP_PATTERN_TYPE_PCRE: + opt->fixed = 0; + opt->pcre = 1; + opt->regflags &= ~REG_EXTENDED; + break; + } +} + static struct grep_pat *create_grep_pat(const char *pat, size_t patlen, const char *origin, int no, enum grep_pat_token t, -- cgit v1.2.1