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Annotation of 42BSD/usr.lib/libcurses/insertln.c, revision 1.1

1.1     ! root        1: # include      "curses.ext"
        !             2: 
        !             3: /*
        !             4:  *     This routine performs an insert-line on the window, leaving
        !             5:  * (_cury,_curx) unchanged.
        !             6:  *
        !             7:  * 4/17/81 (Berkeley) @(#)insertln.c   1.4
        !             8:  */
        !             9: winsertln(win)
        !            10: reg WINDOW     *win; {
        !            11: 
        !            12:        reg char        *temp;
        !            13:        reg int         y;
        !            14:        reg char        *end;
        !            15: 
        !            16:        temp = win->_y[win->_maxy-1];
        !            17:        win->_firstch[win->_cury] = 0;
        !            18:        win->_lastch[win->_cury] = win->_maxx - 1;
        !            19:        for (y = win->_maxy - 1; y > win->_cury; --y) {
        !            20:                win->_y[y] = win->_y[y-1];
        !            21:                win->_firstch[y] = 0;
        !            22:                win->_lastch[y] = win->_maxx - 1;
        !            23:        }
        !            24:        for (end = &temp[win->_maxx]; temp < end; )
        !            25:                *temp++ = ' ';
        !            26:        win->_y[win->_cury] = temp - win->_maxx;
        !            27:        if (win->_cury == LINES - 1 && win->_y[LINES-1][COLS-1] != ' ')
        !            28:                if (win->_scroll) {
        !            29:                        wrefresh(win);
        !            30:                        scroll(win);
        !            31:                        win->_cury--;
        !            32:                }
        !            33:                else
        !            34:                        return ERR;
        !            35:        return OK;
        !            36: }

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