1 files changed, 53 insertions, 0 deletions
diff --git a/lib/unicase/cased.c b/lib/unicase/cased.c
new file mode 100644
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--- /dev/null
+++ b/lib/unicase/cased.c
@@ -0,0 +1,53 @@
+/* Test whether a Unicode character is cased.
+   Copyright (C) 2002, 2006-2007, 2009-2020 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2009.
+
+   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 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
+   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, 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