1 /* 2 * Copyright (c) 2001 Alexey Zelkin <phantom@FreeBSD.org> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 17 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 24 * SUCH DAMAGE. 25 */ 26 27 /* 28 * Copyright 2010 Nexenta Systems, Inc. All rights reserved. 29 * Use is subject to license terms. 30 */ 31 32 #include "lint.h" 33 #include <ctype.h> 34 #include <limits.h> 35 #include <stddef.h> 36 37 static const char nogrouping[] = { CHAR_MAX, '\0' }; 38 39 /* 40 * Internal helper used to convert grouping sequences from string 41 * representation into POSIX specified form, i.e. 42 * 43 * "3;3;-1" -> "\003\003\177\000" 44 */ 45 46 const char * 47 __fix_locale_grouping_str(const char *str) 48 { 49 char *src, *dst; 50 char n; 51 52 if (str == NULL || *str == '\0') { 53 return (nogrouping); 54 } 55 56 for (src = (char *)str, dst = (char *)str; *src != '\0'; src++) { 57 58 /* input string examples: "3;3", "3;2;-1" */ 59 if (*src == ';') 60 continue; 61 62 if (*src == '-' && *(src+1) == '1') { 63 *dst++ = CHAR_MAX; 64 src++; 65 continue; 66 } 67 68 if (!isdigit((unsigned char)*src)) { 69 /* broken grouping string */ 70 return (nogrouping); 71 } 72 73 /* assume all numbers <= 99 */ 74 n = *src - '0'; 75 if (isdigit((unsigned char)*(src+1))) { 76 src++; 77 n *= 10; 78 n += *src - '0'; 79 } 80 81 *dst = n; 82 /* NOTE: assume all input started with "0" as 'no grouping' */ 83 if (*dst == '\0') 84 return ((dst == (char *)str) ? nogrouping : str); 85 dst++; 86 } 87 *dst = '\0'; 88 return (str); 89 } 90