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 /*
31 * Split buffer into fields delimited by tabs and newlines.
32 * Fill pointer array with pointers to fields.
33 * Return the number of fields assigned to the array[].
34 * The remainder of the array elements point to the end of the buffer.
35 *
36 * Note:
37 * The delimiters are changed to null-bytes in the buffer and array of
38 * pointers is only valid while the buffer is intact.
39 */
40
41 #include <sys/types.h>
42 #include <stdlib.h>
43 #include <string.h>
44 #include <thread.h>
45 #include <pthread.h>
46
47 #ifndef _REENTRANT
48 static char *bsplitchar = "\t\n"; /* characters that separate fields */
49 #endif
50
51 #ifdef _REENTRANT
52 static char **
_get_bsplitchar(thread_key_t * keyp)53 _get_bsplitchar(thread_key_t *keyp)
54 {
55 static char *init_bsplitchar = "\t\n";
56 char **strp;
57
58 if (thr_keycreate_once(keyp, free) != 0)
59 return (NULL);
60 strp = pthread_getspecific(*keyp);
61 if (strp == NULL) {
62 strp = malloc(sizeof (char *));
63 if (thr_setspecific(*keyp, strp) != 0) {
64 if (strp)
65 (void) free(strp);
66 strp = NULL;
67 }
68 if (strp != NULL)
69 *strp = init_bsplitchar;
70 }
71 return (strp);
72 }
73 #endif /* _REENTRANT */
74
75 size_t
bufsplit(char * buf,size_t dim,char ** array)76 bufsplit(char *buf, size_t dim, char **array)
77 {
78 #ifdef _REENTRANT
79 static thread_key_t key = THR_ONCE_KEY;
80 char **bsplitchar = _get_bsplitchar(&key);
81 #define bsplitchar (*bsplitchar)
82 #endif /* _REENTRANT */
83
84 unsigned numsplit;
85 int i;
86
87 if (!buf)
88 return (0);
89 if (!dim ^ !array)
90 return (0);
91 if (buf && !dim && !array) {
92 bsplitchar = buf;
93 return (1);
94 }
95 numsplit = 0;
96 while (numsplit < dim) {
97 array[numsplit] = buf;
98 numsplit++;
99 buf = strpbrk(buf, bsplitchar);
100 if (buf)
101 *(buf++) = '\0';
102 else
103 break;
104 if (*buf == '\0') {
105 break;
106 }
107 }
108 buf = strrchr(array[numsplit-1], '\0');
109 for (i = numsplit; i < dim; i++)
110 array[i] = buf;
111 return (numsplit);
112 }
113