usr/src/ucblib/libcurses/clrtoeol.c

   1 /*
   2  * Copyright 2001 Sun Microsystems, Inc.  All rights reserved.
   3  * Use is subject to license terms.
   4  */
   5
   6 /*      Copyright (c) 1983, 1984, 1985, 1986, 1987, 1988, 1989 AT&T     */
   7 /*        All Rights Reserved   */
   8
   9 /*
  10  * Copyright (c) 1980 Regents of the University of California.
  11  * All rights reserved.  The Berkeley software License Agreement
  12  * specifies the terms and conditions for redistribution.
  13  */
  14
  15 #pragma ident   "%Z%%M% %I%     %E% SMI"
  16
  17 /*LINTLIBRARY*/
  18
  19 #ifndef lint
  20 static char
  21 sccsid[] = "@(#)clrtoeol.c 1.6 88/02/08 SMI"; /* from UCB 5.1 85/06/07 */
  22 #endif /* not lint */
  23
  24 #include        <stddef.h>
  25 #include        "curses.ext"
  26
  27 /*
  28  *      This routine clears up to the end of line
  29  */
  30
  31 int
  32 wclrtoeol(WINDOW *win)
  33 {
  34         char    *sp, *end;
  35         int     y, x;
  36         char    *maxx;
  37         ptrdiff_t       minx;
  38
  39         y = win->_cury;
  40         x = win->_curx;
  41         end = &win->_y[y][win->_maxx];
  42         minx = _NOCHANGE;
  43         maxx = &win->_y[y][x];
  44         for (sp = maxx; sp < end; sp++)
  45                 if (*sp != ' ') {
  46                         maxx = sp;
  47                         if (minx == _NOCHANGE)
  48                                 minx = sp - win->_y[y];
  49                         *sp = ' ';
  50                 }
  51         /*
  52          * update firstch and lastch for the line
  53          */
  54         (void) touchline(win, y, win->_curx, win->_maxx - 1);
  55
  56 #ifdef DEBUG
  57         fprintf(outf, "CLRTOEOL: minx = %d, maxx = %d, firstch = %d,"
  58             " lastch = %d\n", minx, maxx - win->_y[y], win->_firstch[y],
  59             win->_lastch[y]);
  60 #endif
  61         return (OK);
  62 }