--- /dev/null
+/* $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);
+}