ppt/ppt.c

   1 /*      $NetBSD: ppt.c,v 1.16 2004/01/27 20:30:30 jsm 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. Neither the name of the University nor the names of its contributors
  16  *    may be used to endorse or promote products derived from this software
  17  *    without specific prior written permission.
  18  *
  19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  29  * SUCH DAMAGE.
  30  */
  31
  32 #include <sys/cdefs.h>
  33 #ifndef lint
  34 __COPYRIGHT("@(#) Copyright (c) 1988, 1993\n\
  35         The Regents of the University of California.  All rights reserved.\n");
  36 #endif /* not lint */
  37
  38 #ifndef lint
  39 #if 0
  40 static char sccsid[] = "@(#)ppt.c       8.1 (Berkeley) 5/31/93";
  41 #else
  42 __RCSID("$NetBSD: ppt.c,v 1.16 2004/01/27 20:30:30 jsm Exp $");
  43 #endif
  44 #endif /* not lint */
  45
  46 #include <err.h>
  47 #include <stdio.h>
  48 #include <stdlib.h>
  49 #include <string.h>
  50 #include <unistd.h>
  51
  52 #define EDGE    "___________"
  53
  54        void     usage(void);
  55         int     main(int, char *[]);
  56 static void     putppt(int);
  57         int     getppt(const char *);
  58
  59 void
  60 usage(void)
  61 {
  62         extern char *__progname;
  63         fprintf(stderr, "usage: %s [-d] [string ...]\n", __progname);
  64         exit(1);
  65 }
  66
  67 int
  68 main(argc, argv)
  69         int argc;
  70         char **argv;
  71 {
  72         char *p, buf[132];
  73         int c, start, neednl, dflag;
  74
  75         /* Revoke setgid privileges */
  76         setgid(getgid());
  77
  78         dflag = 0;
  79         while ((c = getopt(argc, argv, "dh")) != -1)
  80                 switch(c) {
  81                 case 'd':
  82                         dflag = 1;
  83                         break;
  84                 case 'h':
  85                 case '?':
  86                 default:
  87                         usage();
  88                 }
  89         argc -= optind;
  90         argv += optind;
  91
  92         if (dflag) {
  93                 if (argc > 0)
  94                         usage();
  95
  96                 start = 0;
  97                 neednl = 0;
  98                 while (fgets(buf, sizeof(buf), stdin) != NULL) {
  99                         c = getppt(buf);
 100                         if (c < 0) {
 101                                 if (start) {
 102                                         /* lost sync? */
 103                                         if (neednl)
 104                                                 putchar('\n');
 105                                         exit(0);
 106                                 } else
 107                                         continue;
 108                         }
 109                         start = 1;
 110                         putchar(c);
 111                         neednl = (c != '\n');
 112                 }
 113                 if (!feof(stdin))
 114                         err(1, "fgets");
 115                 if (neednl)
 116                         putchar('\n');
 117         } else {
 118                 (void) puts(EDGE);
 119                 if (argc > 0)
 120                         while ((p = *argv++)) {
 121                                 for (; *p; ++p)
 122                                         putppt((int)*p);
 123                                 if ((*(argv)))
 124                                         putppt((int)' ');
 125                         }
 126                 else while ((c = getchar()) != EOF)
 127                         putppt(c);
 128                 (void) puts(EDGE);
 129         }
 130         exit(0);
 131 }
 132
 133 static void
 134 putppt(c)
 135         int c;
 136 {
 137         int i;
 138
 139         (void) putchar('|');
 140         for (i = 7; i >= 0; i--) {
 141                 if (i == 2)
 142                         (void) putchar('.');    /* feed hole */
 143                 if ((c&(1<<i)) != 0)
 144                         (void) putchar('o');
 145                 else
 146                         (void) putchar(' ');
 147         }
 148         (void) putchar('|');
 149         (void) putchar('\n');
 150 }
 151
 152 int
 153 getppt(const char *buf)
 154 {
 155         const char *p = strchr(buf, '.');
 156         int c;
 157
 158         if (p == NULL)
 159                 return (-1);
 160
 161         c = 0;
 162         if (p[ 3] != ' ')
 163                 c |= 0001;
 164         if (p[ 2] != ' ')
 165                 c |= 0002;
 166         if (p[ 1] != ' ')
 167                 c |= 0004;
 168         if (p[-1] != ' ')
 169                 c |= 0010;
 170         if (p[-2] != ' ')
 171                 c |= 0020;
 172         if (p[-3] != ' ')
 173                 c |= 0040;
 174         if (p[-4] != ' ')
 175                 c |= 0100;
 176         if (p[-5] != ' ')
 177                 c |= 0200;
 178
 179         return (c);
 180 }