aboutsummaryrefslogtreecommitdiffstats
path: root/contrib/tools/yasm/libyasm/strsep.c
blob: 8320acf0563d2c612bb2186f72c8e9bc2ad7d22e (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
/* 
 * strsep() implementation for systems that don't have it. 
 * 
 * Copyright (c) 1990, 1993 
 *      The Regents of the University of California.  All rights reserved. 
 * 
 * Redistribution and use in source and binary forms, with or without 
 * modification, are permitted provided that the following conditions 
 * are met: 
 * 1. Redistributions of source code must retain the above copyright 
 *    notice, this list of conditions and the following disclaimer. 
 * 2. Redistributions in binary form must reproduce the above copyright 
 *    notice, this list of conditions and the following disclaimer in the 
 *    documentation and/or other materials provided with the distribution. 
 * 3. Neither the name of the University nor the names of its contributors 
 *    may be used to endorse or promote products derived from this software 
 *    without specific prior written permission. 
 * 
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 
 * SUCH DAMAGE. 
 */ 
#define NO_STRING_INLINES 
#include "util.h" 
 
 
#if defined(LIBC_SCCS) && !defined(lint) 
static char sccsid[] = "@(#)strsep.c    8.1 (Berkeley) 6/4/93"; 
#endif /* LIBC_SCCS and not lint */ 
 
#ifdef HAVE_STRSEP 
#undef yasm__strsep 
#endif 
 
/* 
 * Get next token from string *stringp, where tokens are possibly-empty 
 * strings separated by characters from delim. 
 * 
 * Writes NULs into the string at *stringp to end tokens. 
 * delim need not remain constant from call to call. 
 * On return, *stringp points past the last NUL written (if there might 
 * be further tokens), or is NULL (if there are definitely no more tokens). 
 * 
 * If *stringp is NULL, strsep returns NULL. 
 */ 
/*@-nullstate@*/ 
char * 
yasm__strsep(char **stringp, const char *delim) 
{ 
#ifdef HAVE_STRSEP 
    return strsep(stringp, delim); 
#else 
        char *s;
        const char *spanp;
        int c, sc;
        char *tok; 
 
        if ((s = *stringp) == NULL) 
                return (NULL); 
        for (tok = s;;) { 
                c = *s++; 
                spanp = delim; 
                do { 
                        if ((sc = *spanp++) == c) { 
                                if (c == 0) 
                                        s = NULL; 
                                else 
                                        s[-1] = 0; 
                                *stringp = s; 
                                return (tok); 
                        } 
                } while (sc != 0); 
        } 
        /* NOTREACHED */ 
#endif 
} 
/*@=nullstate@*/