/*      $NetBSD: ppt.c,v 1.19 2011/08/29 20:30:37 joerg Exp $   */

/*
 * Copyright (c) 1988, 1993
 *      The Regents of the University of California.  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 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.
 */

#include <sys/cdefs.h>
#ifndef lint
__COPYRIGHT("@(#) Copyright (c) 1988, 1993\
 The Regents of the University of California.  All rights reserved.");
#endif /* not lint */

#ifndef lint
#if 0
static char sccsid[] = "@(#)ppt.c       8.1 (Berkeley) 5/31/93";
#else
__RCSID("$NetBSD: ppt.c,v 1.19 2011/08/29 20:30:37 joerg Exp $");
#endif
#endif /* not lint */

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

#define EDGE    "___________"

static void putppt(int);
static int getppt(const char *);

__dead static void
usage(void)
{
        extern char *__progname;
        fprintf(stderr, "usage: %s [-d] [string ...]\n", __progname);
        exit(1);
}

int
main(int argc, char **argv)
{
        char *p, buf[132];
        int c, start, neednl, dflag;

        /* Revoke setgid privileges */
        setgid(getgid());

        dflag = 0;
        while ((c = getopt(argc, argv, "dh")) != -1)
                switch(c) {
                case 'd':
                        dflag = 1;
                        break;
                case 'h':
                case '?':
                default:
                        usage();
                }
        argc -= optind;
        argv += optind;

        if (dflag) {
                if (argc > 0)
                        usage();

                start = 0;
                neednl = 0;
                while (fgets(buf, sizeof(buf), stdin) != NULL) {
                        c = getppt(buf);
                        if (c < 0) {
                                if (start) {
                                        /* lost sync? */
                                        if (neednl)
                                                putchar('\n');
                                        exit(0);
                                } else
                                        continue;
                        }
                        start = 1;
                        putchar(c);
                        neednl = (c != '\n');
                }
                if (!feof(stdin))
                        err(1, "fgets");
                if (neednl)
                        putchar('\n');
        } else {
                (void) puts(EDGE);
                if (argc > 0)
                        while ((p = *argv++)) {
                                for (; *p; ++p)
                                        putppt((int)*p);
                                if ((*(argv)))
                                        putppt((int)' ');
                        }
                else while ((c = getchar()) != EOF)
                        putppt(c);
                (void) puts(EDGE);
        }
        exit(0);
}

static void
putppt(int c)
{
        int i;

        (void) putchar('|');
        for (i = 7; i >= 0; i--) {
                if (i == 2)
                        (void) putchar('.');    /* feed hole */
                if ((c&(1<<i)) != 0)
                        (void) putchar('o');
                else
                        (void) putchar(' ');
        }
        (void) putchar('|');
        (void) putchar('\n');
}

static int
getppt(const char *buf)
{
        const char *p = strchr(buf, '.');
        int c;

        if (p == NULL)
                return (-1);

        c = 0;
        if (p[ 3] != ' ')
                c |= 0001;
        if (p[ 2] != ' ')
                c |= 0002;
        if (p[ 1] != ' ')
                c |= 0004;
        if (p[-1] != ' ')
                c |= 0010;
        if (p[-2] != ' ')
                c |= 0020;
        if (p[-3] != ' ')
                c |= 0040;
        if (p[-4] != ' ')
                c |= 0100;
        if (p[-5] != ' ')
                c |= 0200;

        return (c);
}