/*
*
* Copyright (c) 1990, 2015, Oracle and/or its affiliates. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice (including the next
* paragraph) shall be included in all copies or substantial portions of the
* Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*
*/


#include <stdio.h>
#include <stdarg.h>
#include <string.h>
#include "cmc.h"


/*
** Options and Arguments
*/

char	*display_name 	= NULL;		/* -display */
int	warn_flag	= 0;		/* -warn */
char	*basename_arg 	= NULL;		/* optional argument */

char *program;


void
fatal_error (const char *format, ...)

{
	va_list args;

	va_start(args, format);
	(void) fprintf(stderr, "%s: error: ", program);
	(void) vfprintf(stderr, format, args);
	(void) fprintf(stderr, "\n");
	va_end(args);
	exit(1);
}


void
warning (const char *format, ...)

{
	va_list args;

	va_start(args, format);
	(void) fprintf(stderr, "Warning: ");
	(void) vfprintf(stderr, format, args);
	(void) fprintf(stderr, "\n");
	va_end(args);
	exit(1);
}

static void
usage (void)
{
	/* Note: optional filename arg explicitly not documented */
	fprintf(stderr, "usage: %s <op> [-display name] [-warn]\n", program);
	fprintf(stderr, "<op> = save | init | discard | dealloc | show | NeWSinit\n");
	exit(1);
}


/* 
** Parse arguments 
*/

void
process_arguments (char **argv)
{
	register char	**a;

	for (a = argv; *a; a++) {
		if (**a == '-') {
			if        (!strcmp(*a, "-warn")) {
			    warn_flag = 1;
			} else if (!strcmp(*a, "-display")) {
			    if (*++a)
				display_name = *a;
			    else {
				fprintf(stderr, "error: -display needs an argument\n");
				usage();
			    }
			} else {
				fprintf(stderr, "error: unrecognized option '%s'\n", *a);
				usage();
			}
	        } else {
		    if (basename_arg) {
			fprintf(stderr, "error: unrecognized argument '%s'\n", *a);
			usage();
		    } else
			basename_arg = *a;
		}
	}
}


/*ARGSUSED*/
int
main (int argc, char **argv)
{
	void	(*op)(void);

	/* Initialize error handling */
	program = argv[0];

	/* determine operation */
	if (argc <= 1)
		usage();
	++argv;
	if      (!strcmp("save", *argv)) 
		op = cmc_save;
	else if (!strcmp("init", *argv)) 
		op = cmc_init;
	else if (!strcmp("show", *argv)) 
		op = cmc_show;
	else if (!strcmp("discard", *argv)) 
		op = cmc_discard;
	else if (!strcmp("dealloc", *argv)) 
		op = cmc_dealloc;
	else if (!strcmp("NeWSinit", *argv)) 
		op = cmc_NeWSinit;
	else
		usage();
	
	/* parse rest of arguments */
	process_arguments(++argv);

	/* invoke operation */
	op();

	exit(0);
}