1 files changed, 64 insertions, 0 deletions
diff --git a/lib/uniwidth.h b/lib/uniwidth.h
new file mode 100644
index 00000000..4f867b33
--- /dev/null
+++ b/lib/uniwidth.h
@@ -0,0 +1,64 @@
+/* Display width functions.
+   Copyright (C) 2001-2002, 2005, 2007 Free Software Foundation, Inc.
+
+   This program is free software: you can redistribute it and/or modify it
+   under the terms of the GNU Lesser 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
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
+
+#ifndef _UNIWIDTH_H
+#define _UNIWIDTH_H
+
+#include "unitypes.h"
+
+/* Get size_t.  */
+#include <stddef.h>
+
+/* Get locale_charset() declaration.  */
+#include <unistring/localcharset.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/* Display width.  */
+
+/* These functions are locale dependent.  The encoding argument identifies
+   the encoding (e.g. "ISO-8859-2" for Polish).  */
+
+/* Determine number of column positions required for UC.  */
+extern int
+       uc_width (ucs4_t uc, const char *encoding);
+
+/* Determine number of column positions required for first N units
+   (or fewer if S ends before this) in S.  */
+extern int
+       u8_width (const uint8_t *s, size_t n, const char *encoding);
+extern int
+       u16_width (const uint16_t *s, size_t n, const char *encoding);
+extern int
+       u32_width (const uint32_t *s, size_t n, const char *encoding);
+
+/* Determine number of column positions required for S.  */
+extern int
+       u8_strwidth (const uint8_t *s, const char *encoding);
+extern int
+       u16_strwidth (const uint16_t *s, const char *encoding);
+extern int
+       u32_strwidth (const uint32_t *s, const char *encoding);
+
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* _UNIWIDTH_H */