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/* dircproxy
* Copyright (C) 2002 Scott James Remnant <scott@netsplit.com>.
* All Rights Reserved.
*
* irc_string.c
* - Case conversion functions for IRC protocol
* - Comparison and match functions for IRC protocol
* --
* @(#) $Id: irc_string.c,v 1.8 2001/12/21 20:15:55 keybuk Exp $
*
* This file is distributed according to the GNU General Public
* License. For full details, read the top of 'main.c' or the
* file called COPYING that was distributed with this code.
*/
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#include <dircproxy.h>
#include "match.h"
#include "sprintf.h"
#include "irc_string.h"
/* forward declarations */
static int _irc_tolower(int);
static int _irc_toupper(int);
/* IRC version of tolower */
static int _irc_tolower(int c) {
switch (c) {
case '[':
return '{';
case ']':
return '}';
case '\\':
return '|';
default:
return tolower(c);
}
}
/* IRC version of tolower */
static int _irc_toupper(int c) {
switch (c) {
case '{':
return '[';
case '}':
return ']';
case '|':
return '\\';
default:
return toupper(c);
}
}
/* Changes the case of a string to lowercase */
char *irc_strlwr(char *str) {
char *c;
c = str;
while (*c) {
*c = _irc_tolower(*c);
c++;
}
return str;
}
/* Changes the case of a string to uppercase */
char *irc_strupr(char *str) {
char *c;
c = str;
while (*c) {
*c = _irc_toupper(*c);
c++;
}
return str;
}
/* Compare two irc strings, ignoring case. This is done so much, I've dropped
a simple version of the strcmp algorithm here rather than doing two mallocs
lowercasing etc. */
int irc_strcasecmp(const char *s1, const char *s2) {
while (_irc_tolower(*s1) == _irc_tolower(*s2)) {
if (!*s1)
return 0;
s1++;
s2++;
}
return _irc_tolower(*s1) - _irc_tolower(*s2);
}
/* Match an irc string against wildcards, ignoring case */
int irc_strcasematch(const char *str, const char *mask) {
char *newstr, *newmask;
int ret;
newstr = irc_strlwr(x_strdup(str));
newmask = irc_strlwr(x_strdup(mask));
ret = strmatch(newstr, newmask);
free(newstr);
free(newmask);
return ret;
}
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