trunk/Src/wptUtil.cpp

/* wptUtil.cpp - Helper functions
 *      Copyright (C) 2005 Timo Schulz
 *
 * This file is part of WinPT.
 *
 * WinPT 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 2 
 * of the License, or (at your option) any later version.
 *  
 * WinPT 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 WinPT; if not, write to the Free Software Foundation, 
 * Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 
 */
#include <string.h>
#include <stdio.h>
#include <ctype.h>

/* code taken from glibc-2.2.1/sysdeps/generic/strsep.c */
char*
strsep (char **stringp, const char *delim)
{
    char *begin, *end;
    begin = *stringp;

    if (begin == NULL)
        return NULL;

    /* A frequent case is when the delimiter string contains only one
       character.  Here we don't need to call the expensive `strpbrk'
       function and instead work using `strchr'.  */
    if (delim[0] == '\0' || delim[1] == '\0') {
        char ch = delim[0];
        if (ch == '\0')
            end = NULL;
        else {
            if (*begin == ch)
                end = begin;                         
            else if (*begin == '\0')
                end = NULL;
            else
                end = strchr (begin + 1, ch);
        }  
    }
    else /* Find the end of the token.  */
        end = strpbrk (begin, delim);
    if ( end ){
        /* Terminate the token and set *STRINGP past NUL character.  */
        *end++ = '\0';
        *stringp = end;
    }
    else
        /* No more delimiters; this is the last token.  */
        *stringp = NULL;

    return begin;
}

const char *
stristr (const char *buf, const char *sub)
{
    const char *t, *s ;
    size_t n;
    size_t buflen = strlen (buf);

    for( t=buf, n=buflen, s=sub ; n ; t++, n-- ) {
        if( toupper(*t) == toupper(*s) ) {
            for( buf=t++, buflen = n--, s++;
                 n && toupper(*t) == toupper(*s); t++, s++, n-- )
                ;
            if( !*s )
                return buf;
            t = buf; n = buflen; s = sub ;
        }
    }
    return NULL ;
}

1	/* wptUtil.cpp - Helper functions
2	* Copyright (C) 2005 Timo Schulz
3	*
4	* This file is part of WinPT.
5	*
6	* WinPT is free software; you can redistribute it and/or
7	* modify it under the terms of the GNU General Public License
8	* as published by the Free Software Foundation; either version 2
9	* of the License, or (at your option) any later version.
10	*
11	* WinPT 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 GNU
14	* General Public License for more details.
15	*
16	* You should have received a copy of the GNU General Public License
17	* along with WinPT; if not, write to the Free Software Foundation,
18	* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19	*/
20	#include <string.h>
21	#include <stdio.h>
22	#include <ctype.h>
23
24	/* code taken from glibc-2.2.1/sysdeps/generic/strsep.c */
25	char*
26	strsep (char *stringp, const char delim)
27	{
28	char begin, end;
29	begin = *stringp;
30
31	if (begin == NULL)
32	return NULL;
33
34	/* A frequent case is when the delimiter string contains only one
35	character. Here we don't need to call the expensive `strpbrk'
36	function and instead work using `strchr'. */
37	if (delim[0] == '\0' \|\| delim[1] == '\0') {
38	char ch = delim[0];
39	if (ch == '\0')
40	end = NULL;
41	else {
42	if (*begin == ch)
43	end = begin;
44	else if (*begin == '\0')
45	end = NULL;
46	else
47	end = strchr (begin + 1, ch);
48	}
49	}
50	else /* Find the end of the token. */
51	end = strpbrk (begin, delim);
52	if ( end ){
53	/* Terminate the token and set STRINGP past NUL character. /
54	*end++ = '\0';
55	*stringp = end;
56	}
57	else
58	/* No more delimiters; this is the last token. */
59	*stringp = NULL;
60
61	return begin;
62	}
63
64	const char *
65	stristr (const char buf, const char sub)
66	{
67	const char t, s ;
68	size_t n;
69	size_t buflen = strlen (buf);
70
71	for( t=buf, n=buflen, s=sub ; n ; t++, n-- ) {
72	if( toupper(t) == toupper(s) ) {
73	for( buf=t++, buflen = n--, s++;
74	n && toupper(t) == toupper(s); t++, s++, n-- )
75	;
76	if( !*s )
77	return buf;
78	t = buf; n = buflen; s = sub ;
79	}
80	}
81	return NULL ;
82	}
83