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/* Copyright (c) 2002,2003,2004,2009 James M. Kretchmar
*
* This file is part of Owl.
*
* Owl 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 of the License, or
* (at your option) any later version.
*
* Owl 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 Owl. If not, see <http://www.gnu.org/licenses/>.
*
* ---------------------------------------------------------------
*
* As of Owl version 2.1.12 there are patches contributed by
* developers of the branched BarnOwl project, Copyright (c)
* 2006-2009 The BarnOwl Developers. All rights reserved.
*/
#include <string.h>
#include "owl.h"
static const char fileIdent[] = "$Id: regex.c,v 1.8 2009/03/29 19:51:32 kretch Exp $";
void owl_regex_init(owl_regex *re)
{
re->negate=0;
re->string=NULL;
}
int owl_regex_create(owl_regex *re, char *string)
{
int ret;
char buff1[LINE];
char *ptr;
re->string=owl_strdup(string);
ptr=string;
re->negate=0;
if (string[0]=='!') {
ptr++;
re->negate=1;
}
/* set the regex */
ret=regcomp(&(re->re), ptr, REG_EXTENDED|REG_ICASE);
if (ret) {
regerror(ret, NULL, buff1, LINE);
owl_function_makemsg("Error in regular expression: %s", buff1);
owl_free(re->string);
re->string=NULL;
return(-1);
}
return(0);
}
int owl_regex_create_quoted(owl_regex *re, char *string)
{
char *quoted;
quoted=owl_text_quote(string, OWL_REGEX_QUOTECHARS, OWL_REGEX_QUOTEWITH);
owl_regex_create(re, quoted);
owl_free(quoted);
return(0);
}
int owl_regex_compare(owl_regex *re, char *string)
{
int out, ret;
/* if the regex is not set we match */
if (!owl_regex_is_set(re)) {
return(0);
}
ret=regexec(&(re->re), string, 0, NULL, 0);
out=ret;
if (re->negate) {
out=!out;
}
return(out);
}
int owl_regex_is_set(owl_regex *re)
{
if (re->string) return(1);
return(0);
}
char *owl_regex_get_string(owl_regex *re)
{
return(re->string);
}
void owl_regex_copy(owl_regex *a, owl_regex *b)
{
b->negate=a->negate;
b->string=owl_strdup(a->string);
memcpy(&(b->re), &(a->re), sizeof(regex_t));
}
void owl_regex_free(owl_regex *re)
{
if (re->string) owl_free(re->string);
/* do we need to free the regular expression? */
}
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