New function mu_datetime_tz_local.

The function initializes mu_timezone structure to the local timezone.

* include/mailutils/datetime.h (mu_utc_offset): Change return type.
(mu_datetime_tz_local): New proto.
* libmailutils/datetime/tzlocal.c: New file.
* libmailutils/datetime/Makefile.am: Add new file.
* libmailutils/datetime/scantime.c (mu_scan_datetime): Use
mu_datetime_tz_local to initialize local TZ.
* mh/mh_format.c (_parse_date): Likewise.
* libmailutils/datetime/utcoff.c (mu_utc_offset): Returns int.
* libmu_sieve/actions.c (mime_create_ds): Use mu_c_streamftime
to format time directly to stream.

@@ -58,7 +58,8 @@ struct mu_timezone
 
 int mu_parse_date (const char *p, time_t *rettime, const time_t *now);
 
-time_t mu_utc_offset (void);
+int mu_utc_offset (void);
+void mu_datetime_tz_local (struct mu_timezone *tz);
 time_t mu_datetime_to_utc (struct tm *timeptr, struct mu_timezone *tz);
 size_t mu_strftime (char *s, size_t max, const char *format, struct tm *tm);
 

@@ -25,6 +25,7 @@ libdatetime_la_SOURCES = \
  streamftime.c\
  strftime.c\
  tab.c\
+ tzlocal.c\
  unixtime.c\
  utcoff.c\
  yd.c

@@ -325,10 +325,7 @@ mu_scan_datetime (const char *input, const char *fmt,
 #endif
   /* provide default timezone, in case it is not supplied in input */
   if (tz)
-    {
-      memset (tz, 0, sizeof *tz);
-      tz->utc_offset = mu_utc_offset ();
-    }
+    mu_datetime_tz_local (tz);
 
   /* Skip leading whitespace */
   input = mu_str_skip_class (input, MU_CTYPE_BLANK);

+/* GNU Mailutils -- a suite of utilities for electronic mail
+   Copyright (C) 2011 Free Software Foundation, Inc.
+
+   GNU Mailutils is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3, or (at your option)
+   any later version.
+
+   GNU Mailutils is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with GNU Mailutils.  If not, see <http://www.gnu.org/licenses/>. */
+
+#ifdef HAVE_CONFIG_H
+# include <config.h>
+#endif
+#include <mailutils/datetime.h>
+
+void
+mu_datetime_tz_local (struct mu_timezone *tz)
+{
+  tz->utc_offset = mu_utc_offset ();
+  tz->tz_name = NULL;
+}

@@ -22,7 +22,7 @@
 
 /* Convert time 0 at UTC to our localtime, that tells us the offset
    of our current timezone from UTC. */
-time_t
+int
 mu_utc_offset (void)
 {
   time_t t = 0;

@@ -185,12 +185,11 @@ mime_create_ds (mu_mime_t mime, mu_message_t orig)
   mu_header_t hdr;
   mu_body_t body;
   char *email;
-  char datestr[80];
-  time_t t = time (NULL);
   struct tm tm, *tmp;
   struct mu_timezone tz;
   mu_envelope_t env;
   const char *p;
+  time_t t = time (NULL);
   
   mu_message_create (&newmsg, NULL);
   mu_message_get_header (newmsg, &hdr); 
@@ -202,15 +201,17 @@ mime_create_ds (mu_mime_t mime, mu_message_t orig)
   mu_message_get_envelope (orig, &env);
   if (mu_envelope_sget_date (env, &p) == 0
       && mu_scan_datetime (p, MU_DATETIME_FROM, &tm, &tz, NULL) == 0)
-    t = mu_datetime_to_utc (&tm, &tz);
+    {
+      tmp = &tm;
+    }
   else
-    /* Use local time instead */
-    t = time (NULL);
-  tmp = localtime (&t);
+    {
+      tmp = localtime (&t);
+      mu_datetime_tz_local (&tz);
+    }
       
-  /* FIXME: timezone info is lost */
-  mu_strftime (datestr, sizeof datestr, "%a, %b %d %H:%M:%S %Y %Z", tmp);
-  mu_stream_printf (stream, "Arrival-Date: %s\n", datestr);
+  mu_c_streamftime (stream, "Arrival-Date: %a, %b %d %H:%M:%S %Y %Z%n",
+		    tmp, &tz);
 
   email = mu_get_user_email (NULL);
   mu_stream_printf (stream, "Final-Recipient: RFC822; %s\n",
@@ -220,10 +221,10 @@ mime_create_ds (mu_mime_t mime, mu_message_t orig)
   mu_stream_printf (stream,  
 		    "Disposition: automatic-action/MDN-sent-automatically;deleted\n");
 
-  t = time (NULL);
   tmp = localtime (&t);
-  mu_strftime (datestr, sizeof datestr, "%a, %b %d %H:%M:%S %Y %Z", tmp);
-  mu_stream_printf (stream, "Last-Attempt-Date: %s\n", datestr);
+  mu_datetime_tz_local (&tz);
+  mu_c_streamftime (stream, "Last-Attempt-Date: %a, %b %d %H:%M:%S %Y %Z%n",
+		    tmp, &tz);
 
   mu_stream_close (stream);
   mu_stream_destroy (&stream);

@@ -1172,7 +1172,7 @@ _parse_date (struct mh_machine *mach, struct tm *tm, struct mu_timezone *tz)
       /*mu_error ("can't parse date: [%s]", date);*/
       time (&t);
       *tm = *localtime (&t);
-      tz->utc_offset = mu_utc_offset ();
+      mu_datetime_tz_local (tz);
     }
   
   return 0;