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, Version 1.0 only 6 * (the "License"). You may not use this file except in compliance 7 * with the License. 8 * 9 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 10 * or http://www.opensolaris.org/os/licensing. 11 * See the License for the specific language governing permissions 12 * and limitations under the License. 13 * 14 * When distributing Covered Code, include this CDDL HEADER in each 15 * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 16 * If applicable, add the following below this CDDL HEADER, with the 17 * fields enclosed by brackets "[]" replaced with your own identifying 18 * information: Portions Copyright [yyyy] [name of copyright owner] 19 * 20 * CDDL HEADER END 21 */ 22 /* 23 * Copyright 1998-2003 Sun Microsystems, Inc. All rights reserved. 24 * Use is subject to license terms. 25 */ 26 27 #pragma ident "%Z%%M% %I% %E% SMI" 28 29 #include <sys/types.h> 30 #include <sys/cmn_err.h> 31 #include <sys/systm.h> 32 #include <sys/varargs.h> 33 34 /* 35 * SunOS-specific extensions to libc's standard set of string routines. 36 * 37 * NOTE: The standard libc string routines are in $SRC/common/util/string.c, 38 * to facilitate sharing with standalone. 39 */ 40 41 /* 42 * Historical entry point: remove in Solaris 2.8. 43 */ 44 char * 45 vsprintf_len(size_t buflen, char *buf, const char *fmt, va_list args) 46 { 47 (void) vsnprintf(buf, buflen, fmt, args); 48 return (buf); 49 } 50 51 /* 52 * Historical entry point: remove in Solaris 2.8. 53 */ 54 /*PRINTFLIKE3*/ 55 char * 56 sprintf_len(size_t buflen, char *buf, const char *fmt, ...) 57 { 58 va_list args; 59 60 va_start(args, fmt); 61 (void) vsnprintf(buf, buflen, fmt, args); 62 va_end(args); 63 64 return (buf); 65 } 66 67 /* 68 * Simple-minded conversion of a long into a null-terminated character 69 * string. Caller must ensure there's enough space to hold the result. 70 */ 71 void 72 numtos(unsigned long num, char *s) 73 { 74 char prbuf[40]; 75 76 char *cp = prbuf; 77 78 do { 79 *cp++ = "0123456789"[num % 10]; 80 num /= 10; 81 } while (num); 82 83 do { 84 *s++ = *--cp; 85 } while (cp > prbuf); 86 *s = '\0'; 87 } 88 89 /* 90 * Returns the integer value of the string of decimal numeric 91 * chars beginning at **str. Does no overflow checking. 92 * Note: updates *str to point at the last character examined. 93 */ 94 int 95 stoi(char **str) 96 { 97 char *p = *str; 98 int n; 99 int c; 100 101 for (n = 0; (c = *p) >= '0' && c <= '9'; p++) { 102 n = n * 10 + c - '0'; 103 } 104 *str = p; 105 return (n); 106 } 107 108 /* 109 * Like strrchr(), except 110 * (a) it takes a maximum length for the string to be searched, and 111 * (b) if the string ends with a null, it is not considered part of the string. 112 */ 113 char * 114 strnrchr(const char *sp, int c, size_t n) 115 { 116 const char *r = 0; 117 118 while (n-- > 0 && *sp) { 119 if (*sp == c) 120 r = sp; 121 sp++; 122 } 123 124 return ((char *)r); 125 } 126 127 /* 128 * NOTE: These routines aren't shared with standalone because the DDI mandates 129 * that they return the buffer rather than its length. 130 */ 131 /*PRINTFLIKE2*/ 132 char * 133 sprintf(char *buf, const char *fmt, ...) 134 { 135 va_list args; 136 137 va_start(args, fmt); 138 (void) vsnprintf(buf, INT_MAX, fmt, args); 139 va_end(args); 140 141 return (buf); 142 } 143 144 char * 145 vsprintf(char *buf, const char *fmt, va_list args) 146 { 147 (void) vsnprintf(buf, INT_MAX, fmt, args); 148 return (buf); 149 } 150