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Annotation of 41BSD/lib/libcurses/scroll.c, revision 1.1

1.1     ! root        1: # include      "curses.ext"
        !             2: 
        !             3: /*
        !             4:  *     This routine scrolls the window up a line.
        !             5:  */
        !             6: scroll(win)
        !             7: reg WINDOW     *win; {
        !             8: 
        !             9:        reg char        *sp;
        !            10:        reg int         i;
        !            11:        reg char        *temp;
        !            12: 
        !            13:        if (!win->_scroll)
        !            14:                return ERR;
        !            15:        temp = win->_y[0];
        !            16:        for (i = 0; i < win->_maxy - 1; i++)
        !            17:                win->_y[i] = win->_y[i+1];
        !            18:        for (sp = temp; sp - temp < win->_maxx; )
        !            19:                *sp++ = ' ';
        !            20:        win->_y[win->_maxy - 1] = temp;
        !            21:        win->_cury--;
        !            22:        if (win == curscr) {
        !            23:                putchar('\n');
        !            24:                if (!NONL)
        !            25:                        win->_curx = 0;
        !            26: # ifdef DEBUG
        !            27:                fprintf(outf, "SCROLL: win == curscr\n");
        !            28: # endif
        !            29:        }
        !            30: # ifdef DEBUG
        !            31:        else
        !            32:                fprintf(outf, "SCROLL: win [0%o] != curscr [0%o]\n",win,curscr);
        !            33: # endif
        !            34:        return OK;
        !            35: }

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