usr/src/lib/libcurses/screen/waddchnstr.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, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 1997 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 /*
  31  * University Copyright- Copyright (c) 1982, 1986, 1988
  32  * The Regents of the University of California
  33  * All Rights Reserved
  34  *
  35  * University Acknowledgment- Portions of this document are derived from
  36  * software developed by the University of California, Berkeley, and its
  37  * contributors.
  38  */
  39
  40 #pragma ident   "%Z%%M% %I%     %E% SMI"
  41
  42 /*LINTLIBRARY*/
  43
  44 #include        <sys/types.h>
  45 #include        "curses_inc.h"
  46
  47 /*
  48  * Add ncols worth of data to win, using string as input.
  49  * Return the number of chtypes copied.
  50  */
  51 int
  52 waddchnstr(WINDOW *win, chtype *string, int ncols)
  53 {
  54         short           my_x = win->_curx;
  55         short           my_y = win->_cury;
  56         int             remcols;
  57         int             b;
  58         int             sw;
  59         int             ew;
  60
  61         if (ncols < 0) {
  62                 remcols = win->_maxx - my_x;
  63                 while (*string && remcols) {
  64                         sw = mbscrw((int)(_CHAR(*string)));
  65                         ew = mbeucw((int)(_CHAR(*string)));
  66                         if (remcols < sw)
  67                                 break;
  68                         for (b = 0; b < ew; b++) {
  69                                 if (waddch(win, *string++) == ERR)
  70                                         goto out;
  71                         }
  72                         remcols -= sw;
  73                 }
  74         } else {
  75                 remcols = win->_maxx - my_x;
  76                 while ((*string) && (remcols > 0) && (ncols > 0)) {
  77                         sw = mbscrw((int)(_CHAR(*string)));
  78                         ew = mbeucw((int)(_CHAR(*string)));
  79                         if ((remcols < sw) || (ncols < ew))
  80                                 break;
  81                         for (b = 0; b < ew; b++) {
  82                                 if (waddch(win, *string++) == ERR)
  83                                         goto out;
  84                         }
  85                         remcols -= sw;
  86                         ncols -= ew;
  87                 }
  88         }
  89 out:
  90         /* restore cursor position */
  91         win->_curx = my_x;
  92         win->_cury = my_y;
  93
  94         win->_flags |= _WINCHANGED;
  95
  96         /* sync with ancestor structures */
  97         if (win->_sync)
  98                 wsyncup(win);
  99
 100         return (win->_immed ? wrefresh(win) : OK);
 101 }