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 * $FreeBSD$ 27 */ 28 29 #include <ctype.h> 30 #include <limits.h> 31 #include <stddef.h> 32 33 static const char nogrouping[] = { CHAR_MAX, '\0' }; 34 35 /* 36 * "3;3;-1" -> "\003\003\177" 37 */ 38 39 const char * 40 __fix_locale_grouping_str(const char *str) { 41 42 char *src, *dst; 43 char n; 44 45 if (str == NULL || *str == '\0') { 46 return nogrouping; 47 } 48 49 for (src = (char*)str, dst = (char*)str; *src != '\0'; src++) { 50 51 /* input string examples: "3;3", "3;2;-1" */ 52 if (*src == ';') 53 continue; 54 55 if (*src == '-' && *(src+1) == '1') { 56 *dst++ = CHAR_MAX; 57 src++; 58 continue; 59 } 60 61 if (!isdigit((unsigned char)*src)) { 62 /* broken grouping string */ 63 return nogrouping; 64 } 65 66 /* assume all numbers <= 99 */ 67 n = *src - '0'; 68 if (isdigit((unsigned char)*(src+1))) { 69 src++; 70 n *= 10; 71 n += *src - '0'; 72 } 73 74 *dst = n; 75 /* NOTE: assume all input started with "0" as 'no grouping' */ 76 if (*dst == '\0') 77 return (dst == (char*)str) ? nogrouping : str; 78 dst++; 79 } 80 *dst = '\0'; 81 return str; 82 } 83