1/*	$NetBSD: string.c,v 1.2 2010/12/14 01:01:40 haad Exp $	*/
2
3/*
4 * CDDL HEADER START
5 *
6 * The contents of this file are subject to the terms of the
7 * Common Development and Distribution License (the "License").
8 * You may not use this file except in compliance with the License.
9 *
10 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
11 * or http://www.opensolaris.org/os/licensing.
12 * See the License for the specific language governing permissions
13 * and limitations under the License.
14 *
15 * When distributing Covered Code, include this CDDL HEADER in each
16 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
17 * If applicable, add the following below this CDDL HEADER, with the
18 * fields enclosed by brackets "[]" replaced with your own identifying
19 * information: Portions Copyright [yyyy] [name of copyright owner]
20 *
21 * CDDL HEADER END
22 */
23/*
24 * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
25 * Use is subject to license terms.
26 */
27
28#include <sys/param.h>
29#include <sys/string.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
36char *
37strpbrk(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 */
56void
57strident_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 * Simple-minded conversion of a long into a null-terminated character
77 * string.  Caller must ensure there's enough space to hold the result.
78 */
79void
80numtos(unsigned long num, char *s)
81{
82	char prbuf[40];
83
84	char *cp = prbuf;
85
86	do {
87		*cp++ = "0123456789"[num % 10];
88		num /= 10;
89	} while (num);
90
91	do {
92		*s++ = *--cp;
93	} while (cp > prbuf);
94	*s = '\0';
95}
96