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Some basic code maintenance in games/

- in main() replace exit with return
- drop some /* NOTREACHED */ lint comments along the way.
- make more use of standard CFLAGS, esp. -Wimplicit-function-declaration
- add and sort some headers when needed
- add straightforward pledges to some programs used at compile time

discussed with and ok mestre@

/*	$OpenBSD: setup.c,v 1.13 2016/01/07 16:00:31 tb Exp $	*/
/*	$NetBSD: setup.c,v 1.2 1995/03/21 12:05:10 cgd Exp $	*/

/*-
 * Copyright (c) 1991, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This code is derived from software contributed to Berkeley by
 * Jim Gillogly at The Rand 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. 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.
 */

/*
 * Setup: keep the structure of the original Adventure port, but use an
 * internal copy of the data file, serving as a sort of virtual disk.  It's
 * lightly obfuscated to prevent casual snooping of the executable.
 *
 * Also do appropriate things to tabs so that bogus editors will do the right
 * thing with the data file.
 *
 */

#define SIG1 " *      Jim Gillogly"
#define SIG2 " *      Sterday, 6 Thrimidge S.R. 1993, 15:24"

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

#define USAGE "Usage: setup file > data.c (file is typically glorkz)\n"

#define YES 1
#define NO  0

#define LINE 10		/* How many values do we get on a line? */

int
main(int argc, char *argv[])
{
	FILE	*infile;
	int	c, count, linestart;

	if (pledge("stdio rpath", NULL) == -1)
	    err(1, "pledge");

	if (argc != 2) {
		fprintf(stderr, USAGE);
		return 1;
	}

	if ((infile = fopen(argv[1], "r")) == NULL)
		err(1, "Can't read file %s", argv[1]);

	if (pledge("stdio", NULL) == -1)
		err(1, "pledge");

	puts("/*\n * data.c: created by setup from the ascii data file.");
	puts(SIG1);
	puts(SIG2);
	puts(" */");
	printf("\n\nchar data_file[] =\n{");
	count = 0;
	linestart = YES;

	srandom_deterministic(1);

	while ((c = getc(infile)) != EOF) {
		if (count++ % LINE == 0)
			printf("\n\t");
		if (linestart && c == ' ') { /* Convert first spaces to tab */
			printf("0x%02x,", (unsigned int)('\t' ^ random()) & 0xFF);
			while ((c = getc(infile)) == ' ' && c != EOF);
			/* Drop the non-whitespace character through */
			linestart = NO;
		}
		switch (c) {
		case '\t':
			linestart = NO; /* Don't need to convert spaces */
			break;
		case '\n':
			linestart = YES; /* Ready to convert spaces again */
			break;
		}
		if (count++ % LINE == 0)
			printf("\n\t");
		printf("0x%02x,", (unsigned int)(c ^ random()) & 0xFF);
	}
	puts("\n\t0\n};");
	fclose(infile);
	return 0;
}