| /* |
| * Copyright (c) 2001 Alexey Zelkin <phantom@FreeBSD.org> |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above copyright |
| * notice, this list of conditions and the following disclaimer in the |
| * documentation and/or other materials provided with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
| * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
| * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| * SUCH DAMAGE. |
| */ |
| |
| #include <sys/cdefs.h> |
| |
| #include <ctype.h> |
| #include <limits.h> |
| #include <stddef.h> |
| |
| static const char nogrouping[] = { CHAR_MAX, '\0' }; |
| |
| /* |
| * "3;3;-1" -> "\003\003\177" |
| */ |
| |
| const char * |
| __fix_locale_grouping_str(const char *str) { |
| |
| char *src, *dst; |
| char n; |
| |
| if (str == NULL || *str == '\0') { |
| return nogrouping; |
| } |
| |
| for (src = (char*)str, dst = (char*)str; *src != '\0'; src++) { |
| |
| /* input string examples: "3;3", "3;2;-1" */ |
| if (*src == ';') |
| continue; |
| |
| if (*src == '-' && *(src+1) == '1') { |
| *dst++ = CHAR_MAX; |
| src++; |
| continue; |
| } |
| |
| if (!isdigit((unsigned char)*src)) { |
| /* broken grouping string */ |
| return nogrouping; |
| } |
| |
| /* assume all numbers <= 99 */ |
| n = *src - '0'; |
| if (isdigit((unsigned char)*(src+1))) { |
| src++; |
| n *= 10; |
| n += *src - '0'; |
| } |
| |
| *dst = n; |
| /* NOTE: assume all input started with "0" as 'no grouping' */ |
| if (*dst == '\0') |
| return (dst == (char*)str) ? nogrouping : str; |
| dst++; |
| } |
| *dst = '\0'; |
| return str; |
| } |