Remove useless cruft from OpenSSL days
[claws.git] / src / common / string_match.c
1 /*
2  * Sylpheed -- regexp pattern matching utilities
3  * Copyright (C) 2001 Thomas Link, Hiroyuki Yamamoto
4  *                    Modified by Melvin Hadasht.
5  *
6  * This program is free software; you can redistribute it and/or modify
7  * it under the terms of the GNU General Public License as published by
8  * the Free Software Foundation; either version 3 of the License, or
9  * (at your option) any later version.
10  *
11  * This program is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
14  * GNU General Public License for more details.
15  *
16  * You should have received a copy of the GNU General Public License
17  * along with this program. If not, see <http://www.gnu.org/licenses/>.
18  * 
19  */
20
21 #ifdef HAVE_CONFIG_H
22 #  include "config.h"
23 #include "claws-features.h"
24 #endif
25
26 #include <glib.h>
27 #ifdef ENABLE_NLS
28 #include <glib/gi18n.h>
29 #else
30 #define _(a) (a)
31 #define N_(a) (a)
32 #endif
33 #include <string.h>
34
35 #include "string_match.h"
36 #include "utils.h"
37
38 int string_match_precompile (gchar *rexp, regex_t *preg, int cflags)
39 {
40         int problem = 0;
41
42         cm_return_val_if_fail(rexp, -1);
43         cm_return_val_if_fail(*rexp, -1);
44
45         problem = regcomp(preg, rexp, cflags);  
46         
47         return problem;
48 }
49
50
51 gchar *string_remove_match(gchar *buf, gint buflen, gchar * txt, regex_t *preg)
52 {
53         regmatch_t match;
54         int notfound;
55         gint i, j ,k;
56 #ifdef G_OS_WIN32
57         return txt;
58 #else
59         if (!preg)
60                 return txt;
61         if (*txt != 0x00) {
62                 i = 0;
63                 j = 0;
64                 do {
65                         notfound = regexec(preg, txt+j, 1, &match, (j ? REG_NOTBOL : 0));
66                         if (notfound) {
67                                 while (txt[j] && i < buflen -1)
68                                         buf[i++] = txt[j++];
69                         } else {
70                                 if ( match.rm_so == match.rm_eo)
71                                         buf[i++] = txt[j++];
72                                 else {
73                                         k = j;
74                                         while (txt[j] &&  j != k + match.rm_so) 
75                                                 buf[i++] = txt[j++];
76                                         if (txt[j])
77                                                 j = k + match.rm_eo;
78                                 }
79                         }
80                 } while (txt[j] && i < buflen - 1);
81                 buf[i] = 0x00;
82                 if (buf[0] == 0x00) {
83                         strncpy(buf, _("(Subject cleared by RegExp)"),
84                                         buflen - 1);
85                         buf[buflen - 1] = 0x00;
86                 }
87                 return buf;             
88         }
89         return txt;
90 #endif
91 }
92