/*
* b2m - a filter for Babyl -> Unix mail files
+ * The copyright on this file has been disclaimed.
*
* usage: b2m < babyl > mailbox
*
* I find this useful whenever I have to use a
* system which - shock horror! - doesn't run
- * Gnu emacs. At least now I can read all my
- * Gnumacs Babyl format mail files!
+ * GNU Emacs. At least now I can read all my
+ * GNU Emacs Babyl format mail files!
*
* it's not much but it's free!
*
#undef FALSE
#define FALSE 0
-/* Exit codes for success and failure. */
-#ifdef VMS
-#define GOOD 1
-#define BAD 0
-#else
-#define GOOD 0
-#define BAD 1
-#endif
-
#define streq(s,t) (strcmp (s, t) == 0)
#define strneq(s,t,n) (strncmp (s, t, n) == 0)
typedef int logical;
+#define TM_YEAR_BASE 1900
+
+/* Nonzero if TM_YEAR is a struct tm's tm_year value that causes
+ asctime to have well-defined behavior. */
+#ifndef TM_YEAR_IN_ASCTIME_RANGE
+# define TM_YEAR_IN_ASCTIME_RANGE(tm_year) \
+ (1000 - TM_YEAR_BASE <= (tm_year) && (tm_year) <= 9999 - TM_YEAR_BASE)
+#endif
+
/*
* A `struct linebuffer' is a structure which holds a line of text.
* `readline' reads a line from a stream into a linebuffer and works
{
logical labels_saved, printing, header;
time_t ltoday;
+ struct tm *tm;
char *labels, *p, *today;
struct linebuffer data;
case 'V':
printf ("%s (GNU Emacs %s)\n", "b2m", VERSION);
puts ("b2m is in the public domain.");
- exit (GOOD);
+ exit (EXIT_SUCCESS);
case 'h':
fprintf (stderr, "Usage: %s <babylmailbox >unixmailbox\n", progname);
- exit (GOOD);
+ exit (EXIT_SUCCESS);
}
}
if (optind != argc)
{
fprintf (stderr, "Usage: %s <babylmailbox >unixmailbox\n", progname);
- exit (GOOD);
+ exit (EXIT_SUCCESS);
}
labels_saved = printing = header = FALSE;
ltoday = time (0);
- today = ctime (<oday);
+ /* Convert to a string, checking for out-of-range time stamps.
+ Don't use 'ctime', as that might dump core if the hardware clock
+ is set to a bizarre value. */
+ tm = localtime (<oday);
+ if (! (tm && TM_YEAR_IN_ASCTIME_RANGE (tm->tm_year)
+ && (today = asctime (tm))))
+ fatal ("current time is out of range");
data.size = 200;
data.buffer = xnew (200, char);
p = strtok (data.buffer, " ,\r\n\t");
labels = "X-Babyl-Labels: ";
- while (p = strtok (NULL, " ,\r\n\t"))
+ while ((p = strtok (NULL, " ,\r\n\t")))
labels = concat (labels, p, ", ");
p = &labels[strlen (labels) - 2];
if (printing)
puts (data.buffer);
}
+
+ return EXIT_SUCCESS;
}
char *message;
{
fprintf (stderr, "%s: %s\n", progname, message);
- exit (BAD);
+ exit (EXIT_FAILURE);
}
+/* arch-tag: 5a3ad2af-a802-408f-83cc-e7cf5e98653e
+ (do not change this comment) */
+
+/* b2m.c ends here */