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asn1_compile, made independant from libroken and the rest of the
kerberosV stuff.

Suggested by deraadt@

/*
 * Copyright (c) 1997, 1998, 1999 Kungliga Tekniska Högskolan
 * (Royal Institute of Technology, Stockholm, Sweden). 
 * 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. Neither the name of the Institute 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 INSTITUTE 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 INSTITUTE 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. 
 */

#include "gen_locl.h"
#include <getarg.h>

/*
RCSID("$KTH: main.c,v 1.11 2001/02/20 01:44:52 assar Exp $");
*/

extern FILE *yyin;

int version_flag;
int help_flag;
struct getargs args[] = {
    { "version", 0, arg_flag, &version_flag },
    { "help", 0, arg_flag, &help_flag }
};
int num_args = sizeof(args) / sizeof(args[0]);

static void
usage(int code)
{
    arg_printusage(args, num_args, NULL, "[asn1-file [name]]");
    exit(code);
}

int
main(int argc, char **argv)
{
    int ret;
    char *file;
    char *name = NULL;
    int optind = 0;

    if(getarg(args, num_args, argc, argv, &optind))
	usage(1);
    if(help_flag)
	usage(0);
    if(version_flag) {
#if 0
	print_version(NULL);
#else
	printf("asn1_compile from heimdal-0.6\n");
#endif
	exit(0);
    }
    if (argc == optind) {
	file = "stdin";
	name = "stdin";
	yyin = stdin;
    } else {
	file = argv[optind];
	yyin = fopen (file, "r");
	if (yyin == NULL)
	    err (1, "open %s", file);
	name = argv[optind + 1];
    }

    init_generate (file, name);
    initsym ();
    ret = yyparse ();
    close_generate ();
    return ret;
}