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      1 /* $NetBSD: setup.c,v 1.12 2021/05/02 12:50:43 rillig Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 1991, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * Jim Gillogly at The Rand Corporation.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. Redistributions in binary form must reproduce the above copyright
     16  *    notice, this list of conditions and the following disclaimer in the
     17  *    documentation and/or other materials provided with the distribution.
     18  * 3. Neither the name of the University nor the names of its contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  */
     34 
     35 #ifndef lint
     36 static char copyright[] = "@(#) Copyright (c) 1991, 1993\n\
     37 	The Regents of the University of California.  All rights reserved.\n";
     38 
     39 #if 0
     40 static char sccsid[] = "@(#)setup.c	8.1 (Berkeley) 5/31/93";
     41 #else
     42 static char rcsid[] = "$NetBSD: setup.c,v 1.12 2021/05/02 12:50:43 rillig Exp $";
     43 #endif
     44 #endif				/* not lint */
     45 
     46 /*
     47  * Setup: keep the structure of the original Adventure port, but use an
     48  * internal copy of the data file, serving as a sort of virtual disk.  It's
     49  * lightly encrypted to prevent casual snooping of the executable.
     50  *
     51  * Also do appropriate things to tabs so that bogus editors will do the right
     52  * thing with the data file.
     53  *
     54  */
     55 
     56 #define SIG1 " *      Jim Gillogly"
     57 #define SIG2 " *      Sterday, 6 Thrimidge S.R. 1993, 15:24"
     58 
     59 #include <stdio.h>
     60 #include <errno.h>
     61 #include <string.h>
     62 #include <stdlib.h>
     63 #include "hdr.h"	/* SEED lives in there; keep them coordinated. */
     64 
     65 #define USAGE "Usage: setup file > data.c (file is typically glorkz)\n"
     66 
     67 #define YES 1
     68 #define NO  0
     69 
     70 #define LINE 10			/* How many values do we get on a line? */
     71 
     72 int main(int, char *[]);
     73 
     74 int
     75 main(int argc, char *argv[])
     76 {
     77 	FILE   *infile;
     78 	int     c, count, linestart;
     79 
     80 	if (argc != 2) {
     81 		fprintf(stderr, USAGE);
     82 		exit(1);
     83 	}
     84 
     85 	if ((infile = fopen(argv[1], "r")) == NULL) {
     86 		fprintf(stderr, "Can't read file %s: %s\n", argv[1],
     87 		    strerror(errno));
     88 		exit(1);
     89 	}
     90 	puts("/*\n * data.c: created by setup from the ascii data file.");
     91 	puts(SIG1);
     92 	puts(SIG2);
     93 	puts(" */");
     94 	printf("\n\nchar data_file[] =\n{");
     95 	srandom(SEED);
     96 	count = 0;
     97 	linestart = YES;
     98 
     99 	while ((c = getc(infile)) != EOF) {
    100 		if (linestart && c == ' ') { /* Convert first spaces to tab */
    101 			printf("0x%02x,",
    102 			    (unsigned int)('\t' ^ random()) & 0xFF);
    103 			while ((c = getc(infile)) == ' ' && c != EOF);
    104 			/* Drop the non-whitespace character through */
    105 			linestart = NO;
    106 		}
    107 		switch (c) {
    108 		case '\t':
    109 			linestart = NO;	/* Don't need to convert spaces */
    110 			break;
    111 		case '\n':
    112 			linestart = YES;	/* Ready to convert spaces
    113 						 * again */
    114 			break;
    115 		}
    116 		if (count++ % LINE == 0)	/* Finished a line? */
    117 			printf("\n\t");
    118 		printf("0x%02x,", (unsigned int)(c ^ random()) & 0xFF);
    119 	}
    120 	puts("\n\t0\n};");
    121 	fclose(infile);
    122 	fflush(stdout);
    123 	if (ferror(stdout)) {
    124 		perror("error writing standard output");
    125 		exit(1);
    126 	}
    127 	exit(0);
    128 }
    129