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grep: move pattern-type bits support to top-level grep.[ch]

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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 <gitster@pobox.com>
This commit is contained in:
Junio C Hamano
2012-10-03 14:47:48 -07:00
parent 7687a0541e
commit c5c31d3381
3 changed files with 45 additions and 39 deletions
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42
grep.c
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@ -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,