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Annotation of src/usr.bin/window/wwclreol.c, Revision 1.5

1.5     ! mpech       1: /*     $OpenBSD: wwclreol.c,v 1.4 1997/02/25 00:04:43 downsj Exp $     */
1.2       niklas      2: /*     $NetBSD: wwclreol.c,v 1.4 1996/02/08 21:48:58 mycroft Exp $     */
1.1       deraadt     3:
                      4: /*
                      5:  * Copyright (c) 1983, 1993
                      6:  *     The Regents of the University of California.  All rights reserved.
                      7:  *
                      8:  * This code is derived from software contributed to Berkeley by
                      9:  * Edward Wang at The University of California, Berkeley.
                     10:  *
                     11:  * Redistribution and use in source and binary forms, with or without
                     12:  * modification, are permitted provided that the following conditions
                     13:  * are met:
                     14:  * 1. Redistributions of source code must retain the above copyright
                     15:  *    notice, this list of conditions and the following disclaimer.
                     16:  * 2. Redistributions in binary form must reproduce the above copyright
                     17:  *    notice, this list of conditions and the following disclaimer in the
                     18:  *    documentation and/or other materials provided with the distribution.
                     19:  * 3. All advertising materials mentioning features or use of this software
                     20:  *    must display the following acknowledgement:
                     21:  *     This product includes software developed by the University of
                     22:  *     California, Berkeley and its contributors.
                     23:  * 4. Neither the name of the University nor the names of its contributors
                     24:  *    may be used to endorse or promote products derived from this software
                     25:  *    without specific prior written permission.
                     26:  *
                     27:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
                     28:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     29:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     30:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
                     31:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     32:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     33:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     34:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     35:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     36:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     37:  * SUCH DAMAGE.
                     38:  */
                     39:
                     40: #ifndef lint
                     41: #if 0
                     42: static char sccsid[] = "@(#)wwclreol.c 8.1 (Berkeley) 6/6/93";
                     43: #else
1.5     ! mpech      44: static char rcsid[] = "$OpenBSD: wwclreol.c,v 1.4 1997/02/25 00:04:43 downsj Exp $";
1.1       deraadt    45: #endif
                     46: #endif /* not lint */
                     47:
                     48: #include "ww.h"
                     49: #include "tt.h"
                     50:
                     51: /*
                     52:  * Clear w to the end of line.
                     53:  * If cleared is true, then the screen line has already been cleared.
                     54:  */
                     55: wwclreol1(w, row, col, cleared)
1.5     ! mpech      56: struct ww *w;
1.1       deraadt    57: int row, col;
                     58: char cleared;
                     59: {
1.5     ! mpech      60:        int i;
1.1       deraadt    61:
                     62:        /*
                     63:         * Clear the buffer right off
                     64:         */
                     65:        {
1.5     ! mpech      66:                union ww_char *buf;
1.1       deraadt    67:
                     68:                buf = &w->ww_buf[row][col];
                     69:                for (i = w->ww_b.r - col; --i >= 0;)
                     70:                        buf++->c_w = ' ';
                     71:        }
                     72:
                     73:        /*
                     74:         * If can't see it, just return.
                     75:         */
                     76:        if (row < w->ww_i.t || row >= w->ww_i.b
                     77:            || w->ww_i.r <= 0 || w->ww_i.r <= col)
                     78:                return;
                     79:
                     80:        if (col < w->ww_i.l)
                     81:                col = w->ww_i.l;
                     82:
                     83:        /*
                     84:         * Now fix wwns.
                     85:         */
                     86:        {
1.5     ! mpech      87:                union ww_char *s;
        !            88:                unsigned char *smap;
        !            89:                char *win;
1.1       deraadt    90:
                     91:                i = col;
                     92:                smap = &wwsmap[row][i];
                     93:                s = &wwns[row][i];
                     94:                win = &w->ww_win[row][i];
                     95:                for (i = w->ww_i.r - i; --i >= 0;)
                     96:                        if (*smap++ == w->ww_index)
                     97:                                s++->c_w = ' ' | *win++ << WWC_MSHIFT;
                     98:                        else
                     99:                                s++, win++;
                    100:        }
                    101:        if (!cleared)
                    102:                wwtouched[row] |= WWU_TOUCHED;
                    103: }