/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */

/*
 * Copyright 2005 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */

/*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
/*	  All Rights Reserved  	*/

#pragma ident	"%Z%%M%	%I%	%E% SMI"

#include <stdio.h>
#include <math.h>
#include <errno.h>

float deltx = 4095.0;
float delty = 4095.0;

static void	fplt(FILE *);
static int	getsi(FILE *);
static void	getsd(char *, FILE *);

int
main(int argc, char **argv)
{
	int std=1;
	FILE *fin;

	while(argc-- > 1) {
		if(*argv[1] == '-')
			switch(argv[1][1]) {
				case 'l':
					deltx = atoi(&argv[1][2]) - 1;
					break;
				case 'w':
					delty = atoi(&argv[1][2]) - 1;
					break;
				}

		else {
			std = 0;
			if ((fin = fopen(argv[1], "r")) == NULL) {
				fprintf(stderr, "can't open %s\n", argv[1]);
				exit(1);
				}
			fplt(fin);
			}
		argv++;
		}
	if (std)
		fplt( stdin );
	return (0);
}


static void
fplt(FILE *fin)
{
	int c;
	char s[256];
	int xi,yi,x0,y0,x1,y1,r,dx,n,i;
	int pat[256];

	openpl();
	while((c=getc(fin)) != EOF){
		switch(c){
		case 'm':
			xi = getsi(fin);
			yi = getsi(fin);
			move(xi,yi);
			break;
		case 'l':
			x0 = getsi(fin);
			y0 = getsi(fin);
			x1 = getsi(fin);
			y1 = getsi(fin);
			line(x0,y0,x1,y1);
			break;
		case 't':
			getsd(s,fin);
			label(s);
			break;
		case 'e':
			erase();
			break;
		case 'p':
			xi = getsi(fin);
			yi = getsi(fin);
			point(xi,yi);
			break;
		case 'n':
			xi = getsi(fin);
			yi = getsi(fin);
			cont(xi,yi);
			break;
		case 's':
			x0 = getsi(fin);
			y0 = getsi(fin);
			x1 = getsi(fin);
			y1 = getsi(fin);
			space(x0,y0,x1,y1);
			break;
		case 'a':
			xi = getsi(fin);
			yi = getsi(fin);
			x0 = getsi(fin);
			y0 = getsi(fin);
			x1 = getsi(fin);
			y1 = getsi(fin);
			arc(xi,yi,x0,y0,x1,y1);
			break;
		case 'c':
			xi = getsi(fin);
			yi = getsi(fin);
			r = getsi(fin);
			circle(xi,yi,r);
			break;
		case 'f':
			getsd(s,fin);
			linemod(s);
			break;
		case 'd':
			xi = getsi(fin);
			yi = getsi(fin);
			dx = getsi(fin);
			n = getsi(fin);
			for(i=0; i<n; i++)pat[i] = getsi(fin);
			dot(xi,yi,dx,n,pat);
			break;
			}
		}
	closepl();
}

static int
getsi(FILE *fin)
{
	/* get an integer stored in 2 ascii bytes. */
	short a, b;
	if((b = getc(fin)) == EOF)
		return(EOF);
	if((a = getc(fin)) == EOF)
		return(EOF);
	a = a<<8;
	return(a|b);
}

static void
getsd(char *s, FILE *fin)
{
	for( ; *s = getc(fin); s++)
		if(*s == '\n')
			break;
	*s = '\0';
}

int
matherr(struct exception *x)
{
if(x->type==DOMAIN)
	{errno=EDOM;
	if(!strcmp("log",x->name))x->retval = (-HUGE);
	else x->retval = 0;
	return(1);
	}
else  if ((x->type)==SING)
	{errno=EDOM;
	x->retval = (-HUGE);
	return(1);
	}
else return(0);
}