usr/src/lib/libcurses/screen/mbstowcs.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*  Copyright (c) 1988 AT&T */
  28 /*    All Rights Reserved   */
  29
  30 #pragma ident   "%Z%%M% %I%     %E% SMI"
  31
  32 #include <widec.h>
  33 #include <sys/types.h>
  34 #include <stdlib.h>
  35 #include "curses_inc.h"
  36
  37 size_t
  38 _curs_mbstowcs(wchar_t *pwcs, const char *s, size_t n)
  39 {
  40         int     i, val;
  41
  42         for (i = 0; i < n; i++) {
  43                 if ((val = _curs_mbtowc(pwcs++, s, MB_CUR_MAX)) == -1)
  44                         return (val);
  45                 if (val == 0)
  46                         break;
  47                 s += val;
  48         }
  49         return (i);
  50 }