2.9BSD - /usr/src/lib/curses/scroll.c

   1: # include   "curses.ext"
   2: 
   3: /*
   4:  *	This routine scrolls the window up a line.
   5:  *
   6:  * 5/11/81 (Berkeley) @(#)scroll.c	1.2
   7:  */
   8: scroll(win)
   9: reg WINDOW  *win; {
  10: 
  11:     reg char    *sp;
  12:     reg int     i;
  13:     reg char    *temp;
  14: 
  15:     if (!win->_scroll)
  16:         return ERR;
  17:     temp = win->_y[0];
  18:     for (i = 0; i < win->_maxy - 2; i++)
  19:         win->_y[i] = win->_y[i+1];
  20:     for (sp = temp; sp - temp < win->_maxx; )
  21:         *sp++ = ' ';
  22:     win->_y[win->_maxy - 1] = temp;
  23:     win->_cury--;
  24:     if (win == curscr) {
  25:         putchar('\n');
  26:         if (!NONL)
  27:             win->_curx = 0;
  28: # ifdef DEBUG
  29:         fprintf(outf, "SCROLL: win == curscr\n");
  30: # endif
  31:     }
  32: # ifdef DEBUG
  33:     else
  34:         fprintf(outf, "SCROLL: win [0%o] != curscr [0%o]\n",win,curscr);
  35: # endif
  36:     return OK;
  37: }

Defined functions