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/* This file is part of GNU Dico.
Copyright (C) 2008-2018 Sergey Poznyakoff
GNU Dico is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
GNU Dico is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with GNU Dico. If not, see <http://www.gnu.org/licenses/>. */
#include <dicod.h>
#include <regex.h>
struct regex_flags {
int flags;
};
struct regex_data {
regex_t reg;
};
static int
regex_sel(int cmd, dico_key_t key, const char *dict_word)
{
char const *word = key->word;
struct regex_flags *fp = key->strat->closure;
struct regex_data *rp = key->call_data;
int rc;
switch (cmd) {
case DICO_SELECT_BEGIN:
rp = malloc(sizeof(*rp));
if (!rp)
return 1;
key->call_data = rp;
rc = regcomp(&rp->reg, word, fp->flags);
if (rc) {
char errbuf[512];
regerror(rc, &rp->reg, errbuf, sizeof(errbuf));
dico_log(L_ERR, 0, _("Regex error: %s"), errbuf);
}
break;
case DICO_SELECT_RUN:
rc = regexec(&rp->reg, dict_word, 0, NULL, 0) == 0;
break;
case DICO_SELECT_END:
rc = 0;
regfree(&rp->reg);
free(rp);
break;
}
return rc;
}
static struct regex_flags ext_flags = {
REG_EXTENDED|REG_ICASE
};
static struct regex_flags basic_flags = {
REG_ICASE
};
static struct dico_strategy re_strat = {
"re",
"POSIX 1003.2 (modern) regular expressions",
regex_sel,
&ext_flags
};
static struct dico_strategy regex_strat = {
"regexp",
"Old (basic) regular expressions",
regex_sel,
&basic_flags
};
void
register_regex(void)
{
dico_strategy_add(&re_strat);
dico_strategy_add(®ex_strat);
}
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