/*      $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);
}