ppt/ppt.c

   1 /*      $NetBSD: ppt.c,v 1.11 2002/11/26 03:49:53 kim Exp $     */
   2
   3 /*
   4  * Copyright (c) 1988, 1993
   5  *      The Regents of the University of California.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer.
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in the
  14  *    documentation and/or other materials provided with the distribution.
  15  * 3. All advertising materials mentioning features or use of this software
  16  *    must display the following acknowledgement:
  17  *      This product includes software developed by the University of
  18  *      California, Berkeley and its contributors.
  19  * 4. Neither the name of the University nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 #include <sys/cdefs.h>
  37 #ifndef lint
  38 __COPYRIGHT("@(#) Copyright (c) 1988, 1993\n\
  39         The Regents of the University of California.  All rights reserved.\n");
  40 #endif /* not lint */
  41
  42 #ifndef lint
  43 #if 0
  44 static char sccsid[] = "@(#)ppt.c       8.1 (Berkeley) 5/31/93";
  45 #else
  46 __RCSID("$NetBSD: ppt.c,v 1.11 2002/11/26 03:49:53 kim Exp $");
  47 #endif
  48 #endif /* not lint */
  49
  50 #include <err.h>
  51 #include <stdio.h>
  52 #include <stdlib.h>
  53 #include <string.h>
  54 #include <unistd.h>
  55
  56 #define EDGE    "___________"
  57
  58        void     usage __P((void));
  59         int     main __P((int, char *[]));
  60 static void     putppt __P((int));
  61         int     getppt __P((const char *));
  62
  63 void
  64 usage(void)
  65 {
  66         extern char *__progname;
  67         fprintf(stderr, "usage: %s [-d] [string ...]\n", __progname);
  68         exit(1);
  69 }
  70
  71 int
  72 main(argc, argv)
  73         int argc;
  74         char **argv;
  75 {
  76         char *p, buf[132];
  77         int c, start, dflag;
  78
  79         /* Revoke setgid privileges */
  80         setgid(getgid());
  81
  82         while ((c = getopt(argc, argv, "dh")) != -1)
  83                 switch(c) {
  84                 case 'd':
  85                         dflag = 1;
  86                         break;
  87                 case '?': case 'h':
  88                 default:
  89                         usage();
  90                 }
  91         argc -= optind;
  92         argv += optind;
  93
  94         if (dflag) {
  95                 if (argc > 0)
  96                         usage();
  97
  98                 start = 0;
  99                 while (fgets(buf, sizeof(buf), stdin) != NULL) {
 100                         c = getppt(buf);
 101                         if (c < 0) {
 102                                 if (start) {
 103                                         /* lost sync */
 104                                         putchar('\n');
 105                                         exit(0);
 106                                 } else
 107                                         continue;
 108                         }
 109                         start = 1;
 110                         putchar(c);
 111                 }
 112                 if (!feof(stdin))
 113                         err(1, "fgets");
 114                 putchar('\n');
 115         } else {
 116                 (void) puts(EDGE);
 117                 if (argc > 1)
 118                         while ((p = *++argv)) {
 119                                 for (; *p; ++p)
 120                                         putppt((int)*p);
 121                                 if ((*(argv + 1)))
 122                                         putppt((int)' ');
 123                         }
 124                 else while ((c = getchar()) != EOF)
 125                         putppt(c);
 126                 (void) puts(EDGE);
 127         }
 128         exit(0);
 129 }
 130
 131 static void
 132 putppt(c)
 133         int c;
 134 {
 135         int i;
 136
 137         (void) putchar('|');
 138         for (i = 7; i >= 0; i--) {
 139                 if (i == 2)
 140                         (void) putchar('.');    /* feed hole */
 141                 if ((c&(1<<i)) != 0)
 142                         (void) putchar('o');
 143                 else
 144                         (void) putchar(' ');
 145         }
 146         (void) putchar('|');
 147         (void) putchar('\n');
 148 }
 149
 150 int
 151 getppt(const char *buf)
 152 {
 153         const char *p = strchr(buf, '.');
 154         int c;
 155
 156         if (p == NULL)
 157                 return (-1);
 158
 159         c = 0;
 160         if (p[ 3] != ' ')
 161                 c |= 0001;
 162         if (p[ 2] != ' ')
 163                 c |= 0002;
 164         if (p[ 1] != ' ')
 165                 c |= 0004;
 166         if (p[-1] != ' ')
 167                 c |= 0010;
 168         if (p[-2] != ' ')
 169                 c |= 0020;
 170         if (p[-3] != ' ')
 171                 c |= 0040;
 172         if (p[-4] != ' ')
 173                 c |= 0100;
 174         if (p[-5] != ' ')
 175                 c |= 0200;
 176
 177         return (c);
 178 }