From 1c6c8138691b9e3adb483a6e134a8860a7cb9d06 Mon Sep 17 00:00:00 2001 From: Thorsten Lockert Date: Sat, 12 Oct 1996 03:08:26 +0000 Subject: Make mvcur() a weak symbol where supported --- lib/libtermlib/_mvcur.c | 127 ++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 127 insertions(+) create mode 100644 lib/libtermlib/_mvcur.c (limited to 'lib/libtermlib/_mvcur.c') diff --git a/lib/libtermlib/_mvcur.c b/lib/libtermlib/_mvcur.c new file mode 100644 index 00000000000..848337a20ff --- /dev/null +++ b/lib/libtermlib/_mvcur.c @@ -0,0 +1,127 @@ +/* $OpenBSD: _mvcur.c,v 1.1 1996/10/12 03:08:25 tholo Exp $ */ + +/* + * Copyright (c) 1996 SigmaSoft, Th. Lockert + * 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 SigmaSoft, Th. Lockert. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED ``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 AUTHOR 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 rcsid[] = "$OpenBSD: _mvcur.c,v 1.1 1996/10/12 03:08:25 tholo Exp $"; +#endif + +#include +#include +#include +#include "term.h" + +static int +rawmode() +{ + struct termios ti; + + if (tcgetattr(STDIN_FILENO, &ti) < 0) + return 1; + if (ti.c_oflag & OPOST) + if (ti.c_oflag & ONLCR) + return 0; + return 1; +} + +/* + * Optimized cursor movement, assume cursor is currently + * located at (oldx,oldy), output what is needed for the + * cursor to be relocated to (newx,newy) + */ +int +_mvcur(oldy, oldx, newy, newx) + int oldy; + int oldx; + int newy; + int newx; +{ + int l, c, raw; + char *p; + + if (newx >= columns) { + newy += newx / columns; + newx %= columns; + } + if (oldx >= columns) { + l = (oldx + 1) / columns; + oldy += l; + oldx %= columns; + if (!auto_right_margin) { + raw = rawmode(); + while (l > 0) { + if (raw) + if (carriage_return != NULL) + tputs(carriage_return, 0, _ti_outc); + else + _ti_outc('\r'); + if (linefeed_if_not_lf != NULL) + tputs(linefeed_if_not_lf, 0, _ti_outc); + else + _ti_outc('\n'); + l--; + } + oldx = 0; + } + if (oldy >= lines - 1) { + newy -= oldy - (lines - 1); + oldy = lines - 1; + } + } + if (newy >= lines) { + l = newy; + newy = lines - 1; + if (oldy < lines - 1) { + c = newx; + if (cursor_address == NULL) + newx = 0; + mvcur(oldy, oldx, newy, newx); + newx = c; + } + while (l >= lines) { + if (linefeed_if_not_lf != NULL) + tputs(linefeed_if_not_lf, 0, _ti_outc); + else + _ti_outc('\n'); + l--; + oldx = 0; + } + } + if (newy < oldy && !(cursor_address != NULL || cursor_up != NULL)) + newy = oldy; + if (cursor_address != NULL) { + p = tparm(cursor_address, newx, newy); + tputs(p, 0, _ti_outc); + } + else + return ERR; + return OK; +} -- cgit v1.2.3