New module.

diff --git a/postpet.el b/postpet.el
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+;;; postpet.el --- Postpet support for GNU Emacs
+
+;; Copyright (C) 1999,2000 Free Software Foundation, Inc.
+
+;; Author: Tanaka Akira  <akr@jaist.ac.jp>
+;; Keywords: Postpet, MIME, multimedia, mail, news
+
+;; This file is part of SEMI (Sample of Elastic MIME Interfaces).
+
+;; This program 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 2, or (at
+;; your option) any later version.
+
+;; This program 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 Emacs; see the file COPYING.  If not, write to the
+;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+;; Boston, MA 02111-1307, USA.
+
+;;; Code:
+
+(put 'unpack 'lisp-indent-function 1)
+(defmacro unpack (string &rest body)
+  `(let* ((*unpack*string* (string-as-unibyte ,string))
+         (*unpack*index* 0))
+     ,@body))
+
+(defun unpack-skip (len)
+  (setq *unpack*index* (+ len *unpack*index*)))
+
+(defun unpack-fixed (len)
+  (prog1
+      (substring *unpack*string* *unpack*index* (+ *unpack*index* len))
+    (unpack-skip len)))
+
+(defun unpack-byte ()
+  (char-int (aref (unpack-fixed 1) 0)))
+
+(defun unpack-short ()
+  (let* ((b0 (unpack-byte))
+        (b1 (unpack-byte)))
+    (+ (* 256 b0) b1)))
+
+(defun unpack-long ()
+  (let* ((s0 (unpack-short))
+        (s1 (unpack-short)))
+    (+ (* 65536 s0) s1)))
+
+(defun unpack-string ()
+  (let ((len (unpack-byte)))
+    (unpack-fixed len)))
+
+(defun unpack-string-sjis ()
+  (decode-mime-charset-string (unpack-string) 'shift_jis))
+
+(defun postpet-decode (string)
+  (condition-case nil
+      (unpack string
+       (let (res)
+         (unpack-skip 4)
+         (set-alist 'res 'carryingcount (unpack-long))
+         (unpack-skip 8)
+         (set-alist 'res 'sentyear (unpack-short))
+         (set-alist 'res 'sentmonth (unpack-short))
+         (set-alist 'res 'sentday (unpack-short))
+         (unpack-skip 8)
+         (set-alist 'res 'petname (unpack-string-sjis))
+         (set-alist 'res 'owner (unpack-string-sjis))
+         (set-alist 'res 'pettype (unpack-fixed 4))
+         (set-alist 'res 'health (unpack-short))
+         (unpack-skip 2)
+         (set-alist 'res 'sex (unpack-long))
+         (unpack-skip 1)
+         (set-alist 'res 'brain (unpack-byte))
+         (unpack-skip 39)
+         (set-alist 'res 'happiness (unpack-byte))
+         (unpack-skip 14)
+         (set-alist 'res 'petbirthyear (unpack-short))
+         (set-alist 'res 'petbirthmonth (unpack-short))
+         (set-alist 'res 'petbirthday (unpack-short))
+         (unpack-skip 8)
+         (set-alist 'res 'from (unpack-string))
+         (unpack-skip 5)
+         (unpack-skip 160)
+         (unpack-skip 4)
+         (unpack-skip 8)
+         (unpack-skip 8)
+         (unpack-skip 26)
+         (set-alist 'res 'treasure (unpack-short))
+         (set-alist 'res 'money (unpack-long))
+         res))
+    (error nil)))
+
+(defun mime-display-application/x-postpet (entity situation)
+  (save-restriction
+    (narrow-to-region (point-max)(point-max))
+    (let ((pet (postpet-decode (mime-entity-content entity))))
+      (if pet
+         (insert "Petname: " (cdr (assq 'petname pet)) "\n"
+                 "Owner: " (cdr (assq 'owner pet)) "\n"
+                 "Pettype: " (cdr (assq 'pettype pet)) "\n"
+                 "From: " (cdr (assq 'from pet)) "\n"
+                 "CarryingCount: " (int-to-string (cdr (assq 'carryingcount pet))) "\n"
+                 "SentYear: " (int-to-string (cdr (assq 'sentyear pet))) "\n"
+                 "SentMonth: " (int-to-string (cdr (assq 'sentmonth pet))) "\n"
+                 "SentDay: " (int-to-string (cdr (assq 'sentday pet))) "\n"
+                 "PetbirthYear: " (int-to-string (cdr (assq 'petbirthyear pet))) "\n"
+                 "PetbirthMonth: " (int-to-string (cdr (assq 'petbirthmonth pet))) "\n"
+                 "PetbirthDay: " (int-to-string (cdr (assq 'petbirthday pet))) "\n"
+                 "Health: " (int-to-string (cdr (assq 'health pet))) "\n"
+                 "Sex: " (int-to-string (cdr (assq 'sex pet))) "\n"
+                 "Brain: " (int-to-string (cdr (assq 'brain pet))) "\n"
+                 "Happiness: " (int-to-string (cdr (assq 'happiness pet))) "\n"
+                 "Treasure: " (int-to-string (cdr (assq 'treasure pet))) "\n"
+                 "Money: " (int-to-string (cdr (assq 'money pet))) "\n"
+                 )
+       (insert "Invalid format\n"))
+      (run-hooks 'mime-display-application/x-postpet-hook))))
+
+
+;;; @ end
+;;;
+
+(provide 'postpet)
+
+;;; postpet.el ends here