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 * Copyright 2007 Sun Microsystems, Inc. All rights reserved.
23 * Use is subject to license terms.
24 */
25
26 #include <sys/param.h>
27 #include <sys/string.h>
28 #include <sys/kmem.h>
29 #include <machine/stdarg.h>
30
31 #define IS_DIGIT(c) ((c) >= '0' && (c) <= '9')
32
33 #define IS_ALPHA(c) \
34 (((c) >= 'a' && (c) <= 'z') || ((c) >= 'A' && (c) <= 'Z'))
35
36 char *
strpbrk(const char * s,const char * b)37 strpbrk(const char *s, const char *b)
38 {
39 const char *p;
40
41 do {
42 for (p = b; *p != '\0' && *p != *s; ++p)
43 ;
44 if (*p != '\0')
45 return ((char *)s);
46 } while (*s++);
47
48 return (NULL);
49 }
50
51 /*
52 * Convert a string into a valid C identifier by replacing invalid
53 * characters with '_'. Also makes sure the string is nul-terminated
54 * and takes up at most n bytes.
55 */
56 void
strident_canon(char * s,size_t n)57 strident_canon(char *s, size_t n)
58 {
59 char c;
60 char *end = s + n - 1;
61
62 if ((c = *s) == 0)
63 return;
64
65 if (!IS_ALPHA(c) && c != '_')
66 *s = '_';
67
68 while (s < end && ((c = *(++s)) != 0)) {
69 if (!IS_ALPHA(c) && !IS_DIGIT(c) && c != '_')
70 *s = '_';
71 }
72 *s = 0;
73 }
74
75 /*
76 * Do not change the length of the returned string; it must be freed
77 * with strfree().
78 */
79 char *
kmem_asprintf(const char * fmt,...)80 kmem_asprintf(const char *fmt, ...)
81 {
82 int size;
83 va_list adx;
84 char *buf;
85
86 va_start(adx, fmt);
87 size = vsnprintf(NULL, 0, fmt, adx) + 1;
88 va_end(adx);
89
90 buf = kmem_alloc(size, KM_SLEEP);
91
92 va_start(adx, fmt);
93 (void) vsnprintf(buf, size, fmt, adx);
94 va_end(adx);
95
96 return (buf);
97 }
98
99 void
strfree(char * str)100 strfree(char *str)
101 {
102 ASSERT(str != NULL);
103 kmem_free(str, strlen(str) + 1);
104 }
105