1 files changed, 40 insertions, 0 deletions
diff --git a/wcsmbs/wcwidth.h b/wcsmbs/wcwidth.h
new file mode 100644
index 0000000..3e60d49
--- /dev/null
+++ b/wcsmbs/wcwidth.h
@@ -0,0 +1,40 @@
+/* Internal header containing implementation of wcwidth() function.
+Copyright (C) 1996 Free Software Foundation, Inc.
+This file is part of the GNU C Library.
+Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edi>, 1996.
+
+The GNU C Library is free software; you can redistribute it and/or
+modify it under the terms of the GNU Library General Public License as
+published by the Free Software Foundation; either version 2 of the
+License, or (at your option) any later version.
+
+The GNU C Library 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
+Library General Public License for more details.
+
+You should have received a copy of the GNU Library General Public
+License along with the GNU C Library; see the file COPYING.LIB.  If
+not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+Boston, MA 02111-1307, USA.  */
+
+#include <wchar.h>
+#include "cname-lookup.h"
+
+/* Array containing width information.  */
+extern unsigned char *__ctype_width;
+
+static __inline int
+internal_wcwidth (wint_t ch)
+{
+  size_t idx;
+
+  if (ch == L'\0')
+    return 0;
+
+  idx = cname_lookup (ch);
+  if (idx == ~((size_t) 0))
+    return -1;
+
+  return (int) __ctype_width[idx];
+}