New modules 'unistr/u8-strnlen', 'unistr/u16-strnlen', 'unistr/u32-strnlen'.

[gnulib.git] / lib / unistr / u-strnlen.h

diff --git a/lib/unistr/u-strnlen.h b/lib/unistr/u-strnlen.h
new file mode 100644 (file)
index 0000000..b7e68b2
--- /dev/null
+++ b/lib/unistr/u-strnlen.h
@@ -0,0 +1,28 @@
+/* Determine bounded length of UTF-8/UTF-16/UTF-32 string.
+   Copyright (C) 1999, 2002, 2006 Free Software Foundation, Inc.
+   Written by Bruno Haible <bruno@clisp.org>, 2002.
+
+   This program 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, 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
+   Library General Public License for more details.
+
+   You should have received a copy of the GNU Library 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.  */
+
+size_t
+FUNC (const UNIT *s, size_t maxlen)
+{
+  const UNIT *ptr;
+
+  for (ptr = s; maxlen > 0 && *ptr != 0; ptr++, maxlen--)
+    ;
+  return ptr - s;
+}