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Annotation of 43BSD/usr.lib/libcurses/erase.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1980 Regents of the University of California.
        !             3:  * All rights reserved.  The Berkeley software License Agreement
        !             4:  * specifies the terms and conditions for redistribution.
        !             5:  */
        !             6: 
        !             7: #ifndef lint
        !             8: static char sccsid[] = "@(#)erase.c    5.1 (Berkeley) 6/7/85";
        !             9: #endif not lint
        !            10: 
        !            11: # include      "curses.ext"
        !            12: 
        !            13: /*
        !            14:  *     This routine erases everything on the window.
        !            15:  *
        !            16:  */
        !            17: werase(win)
        !            18: reg WINDOW     *win; {
        !            19: 
        !            20:        reg int         y;
        !            21:        reg char        *sp, *end, *start, *maxx;
        !            22:        reg int         minx;
        !            23: 
        !            24: # ifdef DEBUG
        !            25:        fprintf(outf, "WERASE(%0.2o)\n", win);
        !            26: # endif
        !            27:        for (y = 0; y < win->_maxy; y++) {
        !            28:                minx = _NOCHANGE;
        !            29:                start = win->_y[y];
        !            30:                end = &start[win->_maxx];
        !            31:                for (sp = start; sp < end; sp++)
        !            32:                        if (*sp != ' ') {
        !            33:                                maxx = sp;
        !            34:                                if (minx == _NOCHANGE)
        !            35:                                        minx = sp - start;
        !            36:                                *sp = ' ';
        !            37:                        }
        !            38:                if (minx != _NOCHANGE)
        !            39:                        touchline(win, y, minx, maxx - win->_y[y]);
        !            40:        }
        !            41:        win->_curx = win->_cury = 0;
        !            42: }

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