screen.c

早期freebsd实现

/*
 * Copyright (c) 1992 OMRON Corporation.
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * OMRON Corporation.
 *
 * 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.
 *
 *	@(#)screen.c	8.1 (Berkeley) 6/10/93
 */

/*
 * screen.c -- screen handler
 * by A.Fujita, Jun-17-1992
 */

#include <sys/param.h>
#include <luna68k/stand/status.h>

int
screen(argc, argv)
	int   argc;
	char *argv[];
{
	int i, j, flag;
	register char *p;
	short hcnt, vcnt;

	if (!strcmp(argv[1], "clear")) {
		bmdclear();
	} else if (!strcmp(argv[1], "adjust")) {
		hcnt = vcnt = 0;

		flag = 0;
		for (p = argv[2] ; *p != '\0'; p++) {
			if (*p == '-')
				flag++;
			else
				hcnt = (hcnt * 10) + (*p - 0x30);
		}
		if (flag)
			hcnt = -1 * hcnt;

		flag = 0;
		for (p = argv[3] ; *p != '\0'; p++) {
			if (*p == '-')
				flag++;
			else
				vcnt = (vcnt * 10) + (*p - 0x30);
		}
		if (flag)
			vcnt = -1 * vcnt;

		bmdadjust(hcnt, vcnt);
	} else if (!strcmp(argv[1], "number")) {
		for (j = 0; j < 50; j++)
			for (i = 0; i < 10; i++)
				bmdputc( 0x30 + i );

	} else if (!strcmp(argv[1], "alpha")) {
		for (j = 0; j < 26; j++) {
			for (i = 0; i < 90; i++) {
				bmdputc(0x41 + j);
			}
			bmdputc(0x0D);
			bmdputc(0x0A);
		}
	}

	return(ST_NORMAL);
}