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+;;; mmgeneric.el --- MIME generic entity module
+
+;; Copyright (C) 1995,96,97,98,99,2000 Free Software Foundation, Inc.
+
+;; Author: MORIOKA Tomohiko <tomo@m17n.org>
+;; Keywords: definition, MIME, multimedia, mail, news
+
+;; This file is part of FLIM (Faithful Library about Internet Message).
+
+;; 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:
+
+(require 'luna)
+
+
+;;; @ MIME entity
+;;;
+
+(autoload 'mime-entity-content-type "mime")
+(autoload 'mime-parse-multipart "mime-parse")
+(autoload 'mime-parse-encapsulated "mime-parse")
+(autoload 'mime-parse-external "mime-parse")
+(autoload 'mime-entity-content "mime")
+
+(luna-define-class mime-entity ()
+                  (location
+                   content-type children parent
+                   node-id
+                   content-disposition encoding
+                   ;; for other fields
+                   original-header parsed-header))
+
+(defalias 'mime-entity-representation-type-internal 'luna-class-name)
+(defalias 'mime-entity-set-representation-type-internal 'luna-set-class-name)
+
+(luna-define-internal-accessors 'mime-entity)
+
+(luna-define-method mime-entity-fetch-field ((entity mime-entity)
+                                            field-name)
+  (or (symbolp field-name)
+      (setq field-name (intern (capitalize (capitalize field-name)))))
+  (cdr (assq field-name
+            (mime-entity-original-header-internal entity))))
+
+(luna-define-method mime-entity-children ((entity mime-entity))
+  (let* ((content-type (mime-entity-content-type entity))
+        (primary-type (mime-content-type-primary-type content-type))
+        sub-type)
+    (cond ((eq primary-type 'multipart)
+          (mime-parse-multipart entity))
+         ((eq primary-type 'message)
+          (setq sub-type (mime-content-type-subtype content-type))
+          (cond ((eq sub-type 'external-body)
+                 (mime-parse-external entity))
+                ((memq sub-type '(rfc822 news))
+                 (mime-parse-encapsulated entity)
+                 ;; [tomo] Should we make a variable to specify
+                 ;; encapsulated media-types?
+                 ))))))
+
+(luna-define-method mime-insert-text-content ((entity mime-entity))
+  (insert
+   (decode-mime-charset-string (mime-entity-content entity)
+                              (or (mime-content-type-parameter
+                                   (mime-entity-content-type entity)
+                                   "charset")
+                                  default-mime-charset)
+                              'CRLF)
+   ))
+
+
+;;; @ for mm-backend
+;;;
+
+(defmacro mm-expand-class-name (type)
+  `(intern (format "mime-%s-entity" ,type)))
+
+(defmacro mm-define-backend (type &optional parents)
+  `(luna-define-class ,(mm-expand-class-name type)
+                     ,(nconc (mapcar (lambda (parent)
+                                       (mm-expand-class-name parent)
+                                       )
+                                     parents)
+                             '(mime-entity))))
+
+(defmacro mm-define-method (name args &rest body)
+  (or (eq name 'initialize-instance)
+      (setq name (intern (format "mime-%s" name))))
+  (let ((spec (car args)))
+    (setq args
+         (cons (list (car spec)
+                     (mm-expand-class-name (nth 1 spec)))
+               (cdr args)))
+    `(luna-define-method ,name ,args ,@body)
+    ))
+
+(put 'mm-define-method 'lisp-indent-function 'defun)
+
+(def-edebug-spec mm-define-method
+  (&define name ((arg symbolp)
+                [&rest arg]
+                [&optional ["&optional" arg &rest arg]]
+                &optional ["&rest" arg]
+                )
+          def-body))
+
+
+;;; @ end
+;;;
+
+(provide 'mmgeneric)
+
+;;; mmgeneric.el ends here