1 /* $NetBSD: hard-locale.c,v 1.2 2016/01/10 22:16:40 christos Exp $ */ 2 3 /* hard-locale.c -- Determine whether a locale is hard. 4 Copyright 1997, 1998, 1999 Free Software Foundation, Inc. 5 6 This program is free software; you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation; either version 2, or (at your option) 9 any later version. 10 11 This program is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with this program; if not, write to the Free Software Foundation, 18 Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 19 20 #if HAVE_CONFIG_H 21 # include <config.h> 22 #endif 23 24 #ifndef __GNUC__ 25 # ifdef HAVE_ALLOCA_H 26 # include <alloca.h> 27 # else 28 # ifdef _AIX 29 # pragma alloca 30 # else 31 # ifdef _WIN32 32 # include <malloc.h> 33 # include <io.h> 34 # else 35 # ifndef alloca 36 char *alloca (); 37 # endif 38 # endif 39 # endif 40 # endif 41 #endif 42 43 #if HAVE_LOCALE_H 44 # include <locale.h> 45 #endif 46 47 #if HAVE_STRING_H 48 # include <string.h> 49 #endif 50 51 #if HAVE_STDLIB_H 52 # include <stdlib.h> 53 #endif 54 55 /* Return nonzero if the current CATEGORY locale is hard, i.e. if you 56 can't get away with assuming traditional C or POSIX behavior. */ 57 int 58 hard_locale (int category) 59 { 60 #if ! (defined ENABLE_NLS && HAVE_SETLOCALE) 61 return 0; 62 #else 63 64 int hard = 1; 65 char const *p = setlocale (category, 0); 66 67 if (p) 68 { 69 # if defined __GLIBC__ && __GLIBC__ >= 2 70 if (strcmp (p, "C") == 0 || strcmp (p, "POSIX") == 0) 71 hard = 0; 72 # else 73 char *locale = alloca (strlen (p) + 1); 74 strcpy (locale, p); 75 76 /* Temporarily set the locale to the "C" and "POSIX" locales to 77 find their names, so that we can determine whether one or the 78 other is the caller's locale. */ 79 if (((p = setlocale (category, "C")) && strcmp (p, locale) == 0) 80 || ((p = setlocale (category, "POSIX")) && strcmp (p, locale) == 0)) 81 hard = 0; 82 83 /* Restore the caller's locale. */ 84 setlocale (category, locale); 85 # endif 86 } 87 88 return hard; 89 90 #endif 91 } 92