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Annotation of src/usr.bin/window/wwlabel.c, Revision 1.4

1.4     ! downsj      1: /*     $OpenBSD$       */
1.2       niklas      2: /*     $NetBSD: wwlabel.c,v 1.4 1996/02/08 21:49:11 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[] = "@(#)wwlabel.c  8.1 (Berkeley) 6/6/93";
                     43: #else
1.4     ! downsj     44: static char rcsid[] = "$OpenBSD$";
1.1       deraadt    45: #endif
                     46: #endif /* not lint */
                     47:
                     48: #include "ww.h"
                     49: #include "char.h"
                     50:
                     51: /*
                     52:  * Label window w on f,
                     53:  * at 1 line above w and 'where' columns from it's left edge.
                     54:  * Gross, but it works.
                     55:  */
                     56: wwlabel(w, f, where, l, mode)
                     57: struct ww *w;
                     58: struct ww *f;
                     59: char *l;
                     60: {
                     61:        int row;
                     62:        register j;
                     63:        int jj;
                     64:        register char *win;
                     65:        register union ww_char *buf;
                     66:        register union ww_char *ns;
                     67:        register char *fmap;
1.2       niklas     68:        register unsigned char *smap;
1.1       deraadt    69:        char touched;
                     70:        char *p;
                     71:
                     72:        if (f->ww_fmap == 0)
                     73:                return;
                     74:
                     75:        row = w->ww_w.t - 1;
                     76:        if (row < f->ww_i.t || row >= f->ww_i.b)
                     77:                return;
                     78:        win = f->ww_win[row];
                     79:        buf = f->ww_buf[row];
                     80:        fmap = f->ww_fmap[row];
                     81:        ns = wwns[row];
                     82:        smap = wwsmap[row];
                     83:        touched = wwtouched[row];
                     84:        mode <<= WWC_MSHIFT;
                     85:
                     86:        jj = MIN(w->ww_i.r, f->ww_i.r);
                     87:        j = w->ww_i.l + where;
                     88:        while (j < jj && *l)
                     89:                for (p = unctrl(*l++); j < jj && *p; j++, p++) {
                     90:                        /* can't label if not already framed */
                     91:                        if (win[j] & WWM_GLS)
                     92:                                continue;
                     93:                        if (smap[j] != f->ww_index)
                     94:                                buf[j].c_w = mode | *p;
                     95:                        else {
                     96:                                ns[j].c_w = (buf[j].c_w = mode | *p)
                     97:                                                ^ win[j] << WWC_MSHIFT;
                     98:                                touched |= WWU_TOUCHED;
                     99:                        }
                    100:                        fmap[j] |= WWF_LABEL;
                    101:                }
                    102:        wwtouched[row] = touched;
                    103: }