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Annotation of 43BSD/ucb/window/wwinsline.c, revision 1.1

1.1     ! root        1: #ifndef lint
        !             2: static char sccsid[] = "@(#)wwinsline.c        3.7 4/24/85";
        !             3: #endif
        !             4: 
        !             5: /*
        !             6:  * Copyright (c) 1983 Regents of the University of California,
        !             7:  * All rights reserved.  Redistribution permitted subject to
        !             8:  * the terms of the Berkeley Software License Agreement.
        !             9:  */
        !            10: 
        !            11: #include "ww.h"
        !            12: 
        !            13: wwinsline(w, row)
        !            14: register struct ww *w;
        !            15: int row;
        !            16: {
        !            17:        register i;
        !            18:        register union ww_char **cpp, **cqq;
        !            19:        register union ww_char *cp;
        !            20:        int row1, row2;
        !            21:        char deleted;
        !            22:        int visible;
        !            23: 
        !            24:        /*
        !            25:         * Scroll first.
        !            26:         */
        !            27:        if ((row1 = row) < w->ww_i.t) {
        !            28:                row1 = w->ww_i.t;
        !            29:                visible = 0;
        !            30:        } else
        !            31:                visible = 1;
        !            32:        if ((row2 = w->ww_b.b) > w->ww_i.b) {
        !            33:                row2 = w->ww_i.b;
        !            34:        }
        !            35:        deleted = wwscroll1(w, row1, row2, -1, visible);
        !            36: 
        !            37:        /*
        !            38:         * Fix the buffer.
        !            39:         * But leave clearing the last line for wwclreol().
        !            40:         */
        !            41:        cpp = &w->ww_buf[w->ww_b.b];
        !            42:        cqq = cpp - 1;
        !            43:        cp = *cqq;
        !            44:        for (i = w->ww_b.b - row; --i > 0;)
        !            45:                *--cpp = *--cqq;
        !            46:        *cqq = cp;
        !            47: 
        !            48:        /*
        !            49:         * Now clear the last line.
        !            50:         */
        !            51:        if (visible)
        !            52:                wwclreol1(w, row, w->ww_b.l, deleted);
        !            53:        else
        !            54:                for (i = w->ww_b.nc; --i >= 0;)
        !            55:                        cp++->c_w = ' ';
        !            56: }

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