BSD 4_4 release

[unix-history] / usr / src / lib / libcurses / scroll.c

diff --git a/usr/src/lib/libcurses/scroll.c b/usr/src/lib/libcurses/scroll.c
index 94a8d9a..886d0d0 100644 (file)
--- a/usr/src/lib/libcurses/scroll.c
+++ b/usr/src/lib/libcurses/scroll.c
@@ -1,35 +1,72 @@
-# include      "curses.ext"
+/*
+ * Copyright (c) 1981, 1993
+ *     The Regents of the University of California.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *     This product includes software developed by the University of
+ *     California, Berkeley and its contributors.
+ * 4. Neither the name of the University nor the names of its contributors
+ *    may be used to endorse or promote products derived from this software
+ *    without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef lint
+static char sccsid[] = "@(#)scroll.c   8.1 (Berkeley) 6/11/93";
+#endif /* not lint */
+
+#include <curses.h>
+#include <termios.h>

 
 /*
 
 /*

- *     This routine scrolls the window up a line.
+ * scroll --
+ *     Scroll the window up a line.

  */
  */

+int

 scroll(win)
 scroll(win)

-reg WINDOW     *win; {
+       register WINDOW *win;
+{
+       register int oy, ox;
+
+#ifdef DEBUG
+       __CTRACE("scroll: (%0.2o)\n", win);
+#endif
+
+       if (!(win->flags & __SCROLLOK))
+               return (ERR);

 
 

-       reg char        *sp;
-       reg int         i;
-       reg char        *temp;
+       getyx(win, oy, ox);
+       wmove(win, 0, 0);
+       wdeleteln(win);
+       wmove(win, oy, ox);

 
 

-       if (!win->_scroll)
-               return ERR;
-       temp = win->_y[0];
-       for (i = 0; i < win->_maxy - 1; i++)
-               win->_y[i] = win->_y[i+1];
-       for (sp = temp; sp - temp < win->_maxx; )
-               *sp++ = ' ';
-       win->_y[win->_maxy - 1] = temp;
-       win->_cury--;

        if (win == curscr) {
                putchar('\n');
                if (!NONL)
        if (win == curscr) {
                putchar('\n');
                if (!NONL)

-                       win->_curx = 0;
-# ifdef DEBUG
-               fprintf(outf, "SCROLL: win == curscr\n");
-# endif
+                       win->curx = 0;
+#ifdef DEBUG
+               __CTRACE("scroll: win == curscr\n");
+#endif

        }
        }

-# ifdef DEBUG
-       else
-               fprintf(outf, "SCROLL: win [0%o] != curscr [0%o]\n",win,curscr);
-# endif
-       return OK;
+       return (OK);

 }
 }