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 36 char * 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 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 * 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 */ 79 void 80 numtos(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