use strchr, strrchr, random, more lint removal, savefile in /var/games/warp

[bsdgames-darwin.git] / ppt / ppt.c

diff --git a/ppt/ppt.c b/ppt/ppt.c
index cef23a7f47bcfcb1216ca98ad05200179b9986fb..90c4504ead8ce545e6d299da34c8aa3a870f01a0 100644 (file)
--- a/ppt/ppt.c
+++ b/ppt/ppt.c
@@ -1,4 +1,4 @@
-/*     $NetBSD: ppt.c,v 1.5 1997/10/10 16:48:39 lukem Exp $    */
+/*     $NetBSD: ppt.c,v 1.19 2011/08/29 20:30:37 joerg Exp $   */
 
 /*
  * Copyright (c) 1988, 1993
@@ -12,11 +12,7 @@
  * 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. All advertising materials mentioning features or use of this software
- *    must display the following acknowledgement:
- *     This product includes software developed by the University of
- *     California, Berkeley and its contributors.
- * 4. Neither the name of the University nor the names of its contributors
+ * 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.
  *
@@ -35,45 +31,103 @@
 
 #include <sys/cdefs.h>
 #ifndef lint
-__COPYRIGHT("@(#) Copyright (c) 1988, 1993\n\
-       The Regents of the University of California.  All rights reserved.\n");
+__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 1.5 1997/10/10 16:48:39 lukem Exp $");
+__RCSID("$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>
 
-       int     main __P((int, char *[]));
-static void    putppt __P((int));
+#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(argc, argv)
-       int argc;
-       char **argv;
+main(int argc, char **argv)
 {
-       int c;
-       char *p;
-
-       (void) puts("___________");
-       if (argc > 1)
-               while ((p = *++argv) != NULL)
-                       for (; *p; ++p)
-                               putppt((int)*p);
-       else while ((c = getchar()) != EOF)
-               putppt(c);
-       (void) puts("___________");
+       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(c)
-       int c;
+putppt(int c)
 {
        int i;
 
@@ -89,3 +143,33 @@ putppt(c)
        (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);
+}