#ifndef lint
static const char	RCSid[] = "$Id: dgraph.c,v 1.3 2003/11/15 02:13:36 schorsch Exp $";
#endif
/*
 *  dgraph.c - program to send plots to dumb terminal.
 *
 *     7/7/86
 *
 *     Greg Ward Larson
 */

#include  <stdlib.h>
#include  <stdio.h>

#include  "rterror.h"
#include  "mgvars.h"
#include  "meta.h"

#define  isopt(s)	(s[0] == '+' || s[0] == '-')

char  *progname;

char  *libpath[4];

static void dofile(int  optc, char  *optv[], char  *file);


int
main(
	int  argc,
	char  *argv[]
)
{
	char  *getenv();
	int  i, file0;

	progname = argv[0];
	libpath[0] = "./";
	if ((libpath[i=1] = getenv("MDIR")) != NULL)
		i++;
	libpath[i++] = "/usr/local/lib/meta/";
	libpath[i] = NULL;

	for (file0 = 1; file0 < argc-1; file0 += 2)
		if (!isopt(argv[file0]))
			break;

	if (file0 >= argc)
		dofile(argc-1, argv+1, NULL);
	else
		for (i = file0; i < argc; i++)
			dofile(file0-1, argv+1, argv[i]);

	quit(0);
	return 0; /* pro forma return */
}


void
dofile(		/* plot a file */
	int  optc,
	char  *optv[],
	char  *file
)
{
	int  width = 79;
	int  length = 21;
	char  stmp[256];
	int  i;
						/* start fresh */
	mgclearall();
						/* load file */
	mgload(file);
						/* do options */
	for (i = 0; i < optc; i += 2)
		if (optv[i][0] == '+') {
			sprintf(stmp, "%s=%s", optv[i]+1, optv[i+1]);
			setmgvar("command line", stdin, stmp);
		} else
			switch (optv[i][1]) {
			case 'w':
				width = atoi(optv[i+1]);
				break;
			case 'l':
				length = atoi(optv[i+1]);
				break;
			default:
				fprintf(stderr, "%s: unknown option: %s\n",
						progname, optv[i]);
				quit(1);
			}

						/* graph it */
	cgraph(width, length);
}


void
eputs(				/* print error message */
	char  *msg
)
{
	fputs(msg, stderr);
}


void
quit(				/* quit program */
	int  code
)
{
	exit(code);
}