1 files changed, 61 insertions, 0 deletions
diff --git a/lib/unicase/cased.c b/lib/unicase/cased.c
new file mode 100644
index 0000000..05e5198
--- /dev/null
+++ b/lib/unicase/cased.c
@@ -0,0 +1,61 @@
+/* Test whether a Unicode character is cased.
+   Copyright (C) 2002, 2006-2007, 2009-2022 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2009.
+
+   This file is free software.
+   It is dual-licensed under "the GNU LGPLv3+ or the GNU GPLv2+".
+   You can redistribute it and/or modify it under either
+     - the terms of the GNU Lesser General Public License as published
+       by the Free Software Foundation, either version 3, or (at your
+       option) any later version, or
+     - 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, or
+     - the same dual license "the GNU LGPLv3+ or the GNU GPLv2+".
+
+   This file 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
+   Lesser General Public License and the GNU General Public License
+   for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License and of the GNU General Public License along with this
+   program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include "caseprop.h"
+
+/* Quoting the Unicode standard:
+     Definition: A character is defined to be "cased" if it has the Lowercase
+     or Uppercase property or has a General_Category value of
+     Titlecase_Letter.  */
+
+#if 0
+
+#include "unictype.h"
+
+bool
+uc_is_cased (ucs4_t uc)
+{
+  return (uc_is_property_lowercase (uc)
+          || uc_is_property_uppercase (uc)
+          || uc_is_general_category (uc, UC_TITLECASE_LETTER));
+}
+
+#else
+
+#include "unictype/bitmap.h"
+
+/* Define u_casing_property_cased table.  */
+#include "cased.h"
+
+bool
+uc_is_cased (ucs4_t uc)
+{
+  return bitmap_lookup (&u_casing_property_cased, uc);
+}
+
+#endif