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;
}


/* Like strstr but this version is case in-sentensive. */
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	twoaday	25	/* 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	twoaday	32
65			/* Like strstr but this version is case in-sentensive. */
66	twoaday	25	const char *
67			stristr (const char buf, const char sub)
68			{
69			const char t, s ;
70			size_t n;
71			size_t buflen = strlen (buf);
72
73			for( t=buf, n=buflen, s=sub ; n ; t++, n-- ) {
74			if( toupper(t) == toupper(s) ) {
75			for( buf=t++, buflen = n--, s++;
76			n && toupper(t) == toupper(s); t++, s++, n-- )
77			;
78			if( !*s )
79			return buf;
80			t = buf; n = buflen; s = sub ;
81			}
82			}
83			return NULL ;
84			}
85