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Annotation of src/usr.bin/window/wwlabel.c, Revision 1.1

1.1     ! deraadt     1: /*     $NetBSD: wwlabel.c,v 1.3 1995/09/28 10:35:38 tls Exp $  */
        !             2:
        !             3: /*
        !             4:  * Copyright (c) 1983, 1993
        !             5:  *     The Regents of the University of California.  All rights reserved.
        !             6:  *
        !             7:  * This code is derived from software contributed to Berkeley by
        !             8:  * Edward Wang at The University of California, Berkeley.
        !             9:  *
        !            10:  * Redistribution and use in source and binary forms, with or without
        !            11:  * modification, are permitted provided that the following conditions
        !            12:  * are met:
        !            13:  * 1. Redistributions of source code must retain the above copyright
        !            14:  *    notice, this list of conditions and the following disclaimer.
        !            15:  * 2. Redistributions in binary form must reproduce the above copyright
        !            16:  *    notice, this list of conditions and the following disclaimer in the
        !            17:  *    documentation and/or other materials provided with the distribution.
        !            18:  * 3. All advertising materials mentioning features or use of this software
        !            19:  *    must display the following acknowledgement:
        !            20:  *     This product includes software developed by the University of
        !            21:  *     California, Berkeley and its contributors.
        !            22:  * 4. Neither the name of the University nor the names of its contributors
        !            23:  *    may be used to endorse or promote products derived from this software
        !            24:  *    without specific prior written permission.
        !            25:  *
        !            26:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            27:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            28:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            29:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            30:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            31:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            32:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            33:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            34:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            35:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            36:  * SUCH DAMAGE.
        !            37:  */
        !            38:
        !            39: #ifndef lint
        !            40: #if 0
        !            41: static char sccsid[] = "@(#)wwlabel.c  8.1 (Berkeley) 6/6/93";
        !            42: #else
        !            43: static char rcsid[] = "$NetBSD: wwlabel.c,v 1.3 1995/09/28 10:35:38 tls Exp $";
        !            44: #endif
        !            45: #endif /* not lint */
        !            46:
        !            47: #include "ww.h"
        !            48: #include "char.h"
        !            49:
        !            50: /*
        !            51:  * Label window w on f,
        !            52:  * at 1 line above w and 'where' columns from it's left edge.
        !            53:  * Gross, but it works.
        !            54:  */
        !            55: wwlabel(w, f, where, l, mode)
        !            56: struct ww *w;
        !            57: struct ww *f;
        !            58: char *l;
        !            59: {
        !            60:        int row;
        !            61:        register j;
        !            62:        int jj;
        !            63:        register char *win;
        !            64:        register union ww_char *buf;
        !            65:        register union ww_char *ns;
        !            66:        register char *fmap;
        !            67:        register char *smap;
        !            68:        char touched;
        !            69:        char *p;
        !            70:
        !            71:        if (f->ww_fmap == 0)
        !            72:                return;
        !            73:
        !            74:        row = w->ww_w.t - 1;
        !            75:        if (row < f->ww_i.t || row >= f->ww_i.b)
        !            76:                return;
        !            77:        win = f->ww_win[row];
        !            78:        buf = f->ww_buf[row];
        !            79:        fmap = f->ww_fmap[row];
        !            80:        ns = wwns[row];
        !            81:        smap = wwsmap[row];
        !            82:        touched = wwtouched[row];
        !            83:        mode <<= WWC_MSHIFT;
        !            84:
        !            85:        jj = MIN(w->ww_i.r, f->ww_i.r);
        !            86:        j = w->ww_i.l + where;
        !            87:        while (j < jj && *l)
        !            88:                for (p = unctrl(*l++); j < jj && *p; j++, p++) {
        !            89:                        /* can't label if not already framed */
        !            90:                        if (win[j] & WWM_GLS)
        !            91:                                continue;
        !            92:                        if (smap[j] != f->ww_index)
        !            93:                                buf[j].c_w = mode | *p;
        !            94:                        else {
        !            95:                                ns[j].c_w = (buf[j].c_w = mode | *p)
        !            96:                                                ^ win[j] << WWC_MSHIFT;
        !            97:                                touched |= WWU_TOUCHED;
        !            98:                        }
        !            99:                        fmap[j] |= WWF_LABEL;
        !           100:                }
        !           101:        wwtouched[row] = touched;
        !           102: }