-/*
- * b2m - a filter for Babyl -> Unix mail files
- *
- * 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!
- *
- * it's not much but it's free!
- *
- * Ed Wilkinson
- * E.Wilkinson@massey.ac.nz
- * Mon Nov 7 15:54:06 PDT 1988
- */
-
-#include <stdio.h>
-#include <time.h>
-#include <sys/types.h>
-#ifdef MSDOS
-#include <fcntl.h>
-#endif
-
-#include <../src/config.h>
-
-#ifdef USG
-#include <string.h>
-#else
-#include <strings.h>
-#endif
-
-/* BSD's strings.h does not declare the type of strtok. */
-extern char *strtok ();
-
-#ifndef TRUE
-#define TRUE (1)
-#endif
-#ifndef FALSE
-#define FALSE (0)
-#endif
-
-int header = FALSE, printing;
-time_t ltoday;
-char from[256], labels[256], data[256], *p, *today;
-
-main (argc, argv)
- int argc;
- char **argv;
-{
-#ifdef MSDOS
- _fmode = O_BINARY; /* all of files are treated as binary files */
- (stdout)->_flag &= ~_IOTEXT;
- (stdin)->_flag &= ~_IOTEXT;
-#endif
- ltoday = time(0);
- today = ctime(<oday);
-
- if (gets(data))
- if (strcmp(data, "BABYL OPTIONS:")) {
- fprintf(stderr, "b2m: not a Babyl mailfile!\n");
- exit(-1);
- } else
- printing = FALSE;
- else
- exit(-1);
- if (printing)
- puts(data);
-
- while (gets(data)) {
-
-#if 0
- /* What was this for? Does somebody have something against blank
- lines? */
- if (!strcmp(data, ""))
- exit(0);
-#endif
-
- if (!strcmp(data, "*** EOOH ***") && !printing) {
- printing = header = TRUE;
- printf("From b2m %s", today);
- continue;
- }
-
- if (!strcmp(data, "\f")) {
- /* save labels */
- gets(data);
- p = strtok(data, " ,\r\n\t");
- strcpy(labels, "X-Babyl-Labels: ");
-
- while (p = strtok(NULL, " ,\r\n\t")) {
- strcat(labels, p);
- strcat(labels, ", ");
- }
-
- labels[strlen(labels) - 2] = '\0';
- printing = header = FALSE;
- continue;
- }
-
- if (!strlen(data) && header) {
- header = FALSE;
- if (strcmp(labels, "X-Babyl-Labels"))
- puts(labels);
- }
-
- if (printing)
- puts(data);
- }
-}
+/*
+ * 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
+ * GNU Emacs Babyl format mail files!
+ *
+ * it's not much but it's free!
+ *
+ * Ed Wilkinson
+ * E.Wilkinson@massey.ac.nz
+ * Mon Nov 7 15:54:06 PDT 1988
+ */
+
+/* Made conformant to the GNU coding standards January, 1995
+ by Francesco Potorti` <pot@cnuce.cnr.it>. */
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+/* On some systems, Emacs defines static as nothing for the sake
+ of unexec. We don't want that here since we don't use unexec. */
+#undef static
+#endif
+
+#include <stdio.h>
+#include <time.h>
+#include <sys/types.h>
+#include <getopt.h>
+#ifdef MSDOS
+#include <fcntl.h>
+#endif
+
+#undef TRUE
+#define TRUE 1
+#undef FALSE
+#define FALSE 0
+
+#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
+ * regardless of the length of the line.
+ */
+struct linebuffer
+{
+ long size;
+ char *buffer;
+};
+
+extern char *strtok();
+
+long *xmalloc (), *xrealloc ();
+char *concat ();
+long readline ();
+void fatal ();
+
+/*
+ * xnew -- allocate storage. SYNOPSIS: Type *xnew (int n, Type);
+ */
+#define xnew(n, Type) ((Type *) xmalloc ((n) * sizeof (Type)))
+
+
+
+char *progname;
+
+struct option longopts[] =
+{
+ { "help", no_argument, NULL, 'h' },
+ { "version", no_argument, NULL, 'V' },
+ { 0 }
+};
+
+extern int optind;
+
+int
+main (argc, argv)
+ int argc;
+ char **argv;
+{
+ logical labels_saved, printing, header;
+ time_t ltoday;
+ struct tm *tm;
+ char *labels, *p, *today;
+ struct linebuffer data;
+
+#ifdef MSDOS
+ _fmode = O_BINARY; /* all of files are treated as binary files */
+#if __DJGPP__ > 1
+ if (!isatty (fileno (stdout)))
+ setmode (fileno (stdout), O_BINARY);
+ if (!isatty (fileno (stdin)))
+ setmode (fileno (stdin), O_BINARY);
+#else /* not __DJGPP__ > 1 */
+ (stdout)->_flag &= ~_IOTEXT;
+ (stdin)->_flag &= ~_IOTEXT;
+#endif /* not __DJGPP__ > 1 */
+#endif
+ progname = argv[0];
+
+ while (1)
+ {
+ int opt = getopt_long (argc, argv, "hV", longopts, 0);
+ if (opt == EOF)
+ break;
+
+ switch (opt)
+ {
+ case 'V':
+ printf ("%s (GNU Emacs %s)\n", "b2m", VERSION);
+ puts ("b2m is in the public domain.");
+ exit (EXIT_SUCCESS);
+
+ case 'h':
+ fprintf (stderr, "Usage: %s <babylmailbox >unixmailbox\n", progname);
+ exit (EXIT_SUCCESS);
+ }
+ }
+
+ if (optind != argc)
+ {
+ fprintf (stderr, "Usage: %s <babylmailbox >unixmailbox\n", progname);
+ exit (EXIT_SUCCESS);
+ }
+
+ labels_saved = printing = header = FALSE;
+ ltoday = time (0);
+ /* 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);
+
+ if (readline (&data, stdin) == 0
+ || !strneq (data.buffer, "BABYL OPTIONS:", 14))
+ fatal ("standard input is not a Babyl mailfile.");
+
+ while (readline (&data, stdin) > 0)
+ {
+ if (streq (data.buffer, "*** EOOH ***") && !printing)
+ {
+ printing = header = TRUE;
+ printf ("From \"Babyl to mail by %s\" %s", progname, today);
+ continue;
+ }
+
+ if (data.buffer[0] == '\037')
+ {
+ if (data.buffer[1] == '\0')
+ continue;
+ else if (data.buffer[1] == '\f')
+ {
+ /* Save labels. */
+ readline (&data, stdin);
+ p = strtok (data.buffer, " ,\r\n\t");
+ labels = "X-Babyl-Labels: ";
+
+ while ((p = strtok (NULL, " ,\r\n\t")))
+ labels = concat (labels, p, ", ");
+
+ p = &labels[strlen (labels) - 2];
+ if (*p == ',')
+ *p = '\0';
+ printing = header = FALSE;
+ labels_saved = TRUE;
+ continue;
+ }
+ }
+
+ if ((data.buffer[0] == '\0') && header)
+ {
+ header = FALSE;
+ if (labels_saved)
+ puts (labels);
+ }
+
+ if (printing)
+ puts (data.buffer);
+ }
+
+ return EXIT_SUCCESS;
+}
+
+
+
+/*
+ * Return a newly-allocated string whose contents
+ * concatenate those of s1, s2, s3.
+ */
+char *
+concat (s1, s2, s3)
+ char *s1, *s2, *s3;
+{
+ int len1 = strlen (s1), len2 = strlen (s2), len3 = strlen (s3);
+ char *result = xnew (len1 + len2 + len3 + 1, char);
+
+ strcpy (result, s1);
+ strcpy (result + len1, s2);
+ strcpy (result + len1 + len2, s3);
+ result[len1 + len2 + len3] = '\0';
+
+ return result;
+}
+
+/*
+ * Read a line of text from `stream' into `linebuffer'.
+ * Return the number of characters read from `stream',
+ * which is the length of the line including the newline, if any.
+ */
+long
+readline (linebuffer, stream)
+ struct linebuffer *linebuffer;
+ register FILE *stream;
+{
+ char *buffer = linebuffer->buffer;
+ register char *p = linebuffer->buffer;
+ register char *pend;
+ int chars_deleted;
+
+ pend = p + linebuffer->size; /* Separate to avoid 386/IX compiler bug. */
+
+ while (1)
+ {
+ register int c = getc (stream);
+ if (p == pend)
+ {
+ linebuffer->size *= 2;
+ buffer = (char *) xrealloc (buffer, linebuffer->size);
+ p += buffer - linebuffer->buffer;
+ pend = buffer + linebuffer->size;
+ linebuffer->buffer = buffer;
+ }
+ if (c == EOF)
+ {
+ *p = '\0';
+ chars_deleted = 0;
+ break;
+ }
+ if (c == '\n')
+ {
+ if (p > buffer && p[-1] == '\r')
+ {
+ *--p = '\0';
+ chars_deleted = 2;
+ }
+ else
+ {
+ *p = '\0';
+ chars_deleted = 1;
+ }
+ break;
+ }
+ *p++ = c;
+ }
+
+ return (p - buffer + chars_deleted);
+}
+
+/*
+ * Like malloc but get fatal error if memory is exhausted.
+ */
+long *
+xmalloc (size)
+ unsigned int size;
+{
+ long *result = (long *) malloc (size);
+ if (result == NULL)
+ fatal ("virtual memory exhausted");
+ return result;
+}
+
+long *
+xrealloc (ptr, size)
+ char *ptr;
+ unsigned int size;
+{
+ long *result = (long *) realloc (ptr, size);
+ if (result == NULL)
+ fatal ("virtual memory exhausted");
+ return result;
+}
+
+void
+fatal (message)
+ char *message;
+{
+ fprintf (stderr, "%s: %s\n", progname, message);
+ exit (EXIT_FAILURE);
+}
+
+/* arch-tag: 5a3ad2af-a802-408f-83cc-e7cf5e98653e
+ (do not change this comment) */
+
+/* b2m.c ends here */
HCoop / bpt / emacs.git / blobdiff