1 files changed, 64 insertions, 0 deletions
diff --git a/hard-locale.h b/hard-locale.h
new file mode 100644
index 00000000..0f4986ba
--- /dev/null
+++ b/hard-locale.h
@@ -0,0 +1,64 @@
+/* hard-locale.h -- Same as hard-locale.c.
+ *
+ * For gawk, put this in a header file, provides source code
+ * compatibility with GNU grep for dfa.c, so that dfa.c need
+ * not be continually modified by hand.
+ */
+/* 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
+   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.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.  */
+
+
+/* Return nonzero if the current CATEGORY locale is hard, i.e. if you
+   can't get away with assuming traditional C or POSIX behavior.  */
+static int
+hard_locale (int category)
+{
+#if ! (defined ENABLE_NLS && HAVE_SETLOCALE)
+  return 0;
+#else
+
+  int hard = 1;
+  char const *p = setlocale (category, 0);
+
+  if (p)
+    {
+# if defined __GLIBC__ && __GLIBC__ >= 2
+      if (strcmp (p, "C") == 0 || strcmp (p, "POSIX") == 0)
+	hard = 0;
+# else
+      static ptr_t xmalloc PARAMS ((size_t n));
+
+      char *locale = xmalloc (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;
+
+      /* Restore the caller's locale.  */
+      setlocale (category, locale);
+      free(locale);
+# endif
+    }
+
+  return hard;
+
+#endif
+}