/*      $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;
}