gettimeofday: port recent C++ fix to Emacs

[gnulib.git] / lib / hard-locale.c

diff --git a/lib/hard-locale.c b/lib/hard-locale.c
index 01e0ebd..d55658d 100644 (file)
--- a/lib/hard-locale.c
+++ b/lib/hard-locale.c
@@ -1,10 +1,12 @@
 /* hard-locale.c -- Determine whether a locale is hard.
-   Copyright 1997, 1998, 1999 Free Software Foundation, Inc.
 
-   This program is free software; you can redistribute it and/or modify
+   Copyright (C) 1997-1999, 2002-2004, 2006-2007, 2009-2013 Free Software
+   Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
-   the Free Software Foundation; either version 2, or (at your option)
-   any later version.
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
 
    This program is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -12,76 +14,59 @@
    GNU General Public License for more details.
 
    You should have received a copy of the GNU General Public License
-   along with this program; if not, write to the Free Software Foundation,
-   Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
-#if HAVE_CONFIG_H
-# include <config.h>
-#endif
+#include <config.h>
 
-#if __GNUC__
-# define alloca __builtin_alloca
-#else
-# ifdef HAVE_ALLOCA_H
-#  include <alloca.h>
-# else
-#  ifdef _AIX
- #  pragma alloca
-#  else
-#   ifdef _WIN32
-#    include <malloc.h>
-#    include <io.h>
-#   else
-#    ifndef alloca
-char *alloca ();
-#    endif
-#   endif
-#  endif
-# endif
-#endif
+#include "hard-locale.h"
 
-#if HAVE_LOCALE_H
-# include <locale.h>
-#endif
+#include <locale.h>
+#include <stdlib.h>
+#include <string.h>
 
-#if HAVE_STRING_H
-# include <string.h>
+#ifdef __GLIBC__
+# define GLIBC_VERSION __GLIBC__
+#elif defined __UCLIBC__
+# define GLIBC_VERSION 2
+#else
+# define GLIBC_VERSION 0
 #endif
 
-/* Return nonzero if the current CATEGORY locale is hard, i.e. if you
+/* Return true if the current CATEGORY locale is hard, i.e. if you
    can't get away with assuming traditional C or POSIX behavior.  */
-int
+bool
 hard_locale (int category)
 {
-#if ! (defined ENABLE_NLS && HAVE_SETLOCALE)
-  return 0;
-#else
-
-  int hard = 1;
-  char const *p = setlocale (category, 0);
+  bool hard = true;
+  char const *p = setlocale (category, NULL);
 
   if (p)
     {
-# if defined __GLIBC__ && __GLIBC__ >= 2
-      if (strcmp (p, "C") == 0 || strcmp (p, "POSIX") == 0)
-       hard = 0;
-# else
-      char *locale = alloca (strlen (p) + 1);
-      strcpy (locale, p);
-
-      /* Temporarily set the locale to the "C" and "POSIX" locales to
-        find their names, so that we can determine whether one or the
-        other is the caller's locale.  */
-      if (((p = setlocale (category, "C")) && strcmp (p, locale) == 0)
-         || ((p = setlocale (category, "POSIX")) && strcmp (p, locale) == 0))
-       hard = 0;
+      if (2 <= GLIBC_VERSION)
+        {
+          if (strcmp (p, "C") == 0 || strcmp (p, "POSIX") == 0)
+            hard = false;
+        }
+      else
+        {
+          char *locale = strdup (p);
+          if (locale)
+            {
+              /* Temporarily set the locale to the "C" and "POSIX" locales
+                 to find their names, so that we can determine whether one
+                 or the other is the caller's locale.  */
+              if (((p = setlocale (category, "C"))
+                   && strcmp (p, locale) == 0)
+                  || ((p = setlocale (category, "POSIX"))
+                      && strcmp (p, locale) == 0))
+                hard = false;
 
-      /* Restore the caller's locale.  */
-      setlocale (category, locale);
-# endif
+              /* Restore the caller's locale.  */
+              setlocale (category, locale);
+              free (locale);
+            }
+        }
     }
 
   return hard;
-
-#endif
 }