1 /*
2 * CDDL HEADER START
3 *
4 * The contents of this file are subject to the terms of the
5 * Common Development and Distribution License (the "License").
6 * You may not use this file except in compliance with the License.
7 *
8 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9 * or http://www.opensolaris.org/os/licensing.
10 * See the License for the specific language governing permissions
11 * and limitations under the License.
12 *
13 * When distributing Covered Code, include this CDDL HEADER in each
14 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15 * If applicable, add the following below this CDDL HEADER, with the
16 * fields enclosed by brackets "[]" replaced with your own identifying
17 * information: Portions Copyright [yyyy] [name of copyright owner]
18 *
19 * CDDL HEADER END
20 */
21
22 /*
23 * Copyright 2008 Sun Microsystems, Inc. All rights reserved.
24 * Use is subject to license terms.
25 */
26
27 /* Copyright (c) 1988 AT&T */
28 /* All Rights Reserved */
29
30 #pragma ident "%Z%%M% %I% %E% SMI"
31
32 /*
33 * Split buffer into fields delimited by tabs and newlines.
34 * Fill pointer array with pointers to fields.
35 * Return the number of fields assigned to the array[].
36 * The remainder of the array elements point to the end of the buffer.
37 *
38 * Note:
39 * The delimiters are changed to null-bytes in the buffer and array of
40 * pointers is only valid while the buffer is intact.
41 */
42
43 #include <sys/types.h>
44 #include <stdlib.h>
45 #include <string.h>
46 #include <thread.h>
47 #include <pthread.h>
48
49 #ifndef _REENTRANT
50 static char *bsplitchar = "\t\n"; /* characters that separate fields */
51 #endif
52
53 #ifdef _REENTRANT
54 static char **
_get_bsplitchar(thread_key_t * keyp)55 _get_bsplitchar(thread_key_t *keyp)
56 {
57 static char *init_bsplitchar = "\t\n";
58 char **strp;
59
60 if (thr_keycreate_once(keyp, free) != 0)
61 return (NULL);
62 strp = pthread_getspecific(*keyp);
63 if (strp == NULL) {
64 strp = malloc(sizeof (char *));
65 if (thr_setspecific(*keyp, strp) != 0) {
66 if (strp)
67 (void) free(strp);
68 strp = NULL;
69 }
70 if (strp != NULL)
71 *strp = init_bsplitchar;
72 }
73 return (strp);
74 }
75 #endif /* _REENTRANT */
76
77 size_t
bufsplit(char * buf,size_t dim,char ** array)78 bufsplit(char *buf, size_t dim, char **array)
79 {
80 #ifdef _REENTRANT
81 static thread_key_t key = THR_ONCE_KEY;
82 char **bsplitchar = _get_bsplitchar(&key);
83 #define bsplitchar (*bsplitchar)
84 #endif /* _REENTRANT */
85
86 unsigned numsplit;
87 int i;
88
89 if (!buf)
90 return (0);
91 if (!dim ^ !array)
92 return (0);
93 if (buf && !dim && !array) {
94 bsplitchar = buf;
95 return (1);
96 }
97 numsplit = 0;
98 while (numsplit < dim) {
99 array[numsplit] = buf;
100 numsplit++;
101 buf = strpbrk(buf, bsplitchar);
102 if (buf)
103 *(buf++) = '\0';
104 else
105 break;
106 if (*buf == '\0') {
107 break;
108 }
109 }
110 buf = strrchr(array[numsplit-1], '\0');
111 for (i = numsplit; i < dim; i++)
112 array[i] = buf;
113 return (numsplit);
114 }
115