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|
;;; mmbuffer.el --- MIME entity module for binary buffer
;; Copyright (C) 1998,1999,2000 Free Software Foundation, Inc.
;; Author: MORIOKA Tomohiko <tomo@m17n.org>
;; Keywords: 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., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.
;;; Code:
(require 'mmgeneric)
(require 'mime)
(eval-and-compile
(luna-define-class mime-buffer-entity (mime-entity)
(buffer
header-start
header-end
body-start
body-end))
(luna-define-internal-accessors 'mime-buffer-entity)
)
(luna-define-method initialize-instance :after ((entity mime-buffer-entity)
&rest init-args)
(or (mime-buffer-entity-buffer-internal entity)
(mime-buffer-entity-set-buffer-internal
entity (get-buffer (mime-entity-location-internal entity))))
(with-current-buffer (mime-buffer-entity-buffer-internal entity)
(let ((header-start
(or (mime-buffer-entity-header-start-internal entity)
(mime-buffer-entity-set-header-start-internal
entity (point-min))))
(header-end (mime-buffer-entity-header-end-internal entity))
(body-start (mime-buffer-entity-body-start-internal entity))
(body-end
(or (mime-buffer-entity-body-end-internal entity)
(mime-buffer-entity-set-body-end-internal entity (point-max)))))
(goto-char header-start)
(unless (and header-end body-start)
(if (re-search-forward "^$" body-end t)
(setq header-end (match-end 0)
body-start (if (= header-end body-end)
body-end
(1+ header-end)))
(setq header-end (point-min)
body-start (point-min)))
(mime-buffer-entity-set-header-end-internal entity header-end)
(mime-buffer-entity-set-body-start-internal entity body-start)
)
(or (mime-entity-content-type-internal entity)
(save-restriction
(narrow-to-region header-start header-end)
(mime-entity-set-content-type-internal
entity
(let ((str (std11-fetch-field "Content-Type")))
(if str
(mime-parse-Content-Type str)
)))
))
))
entity)
(luna-define-method mime-entity-name ((entity mime-buffer-entity))
(buffer-name (mime-buffer-entity-buffer-internal entity))
)
;;; @ entity
;;;
(luna-define-method mime-insert-entity ((entity mime-buffer-entity))
(insert-buffer-substring (mime-buffer-entity-buffer-internal entity)
(mime-buffer-entity-header-start-internal entity)
(mime-buffer-entity-body-end-internal entity))
)
(luna-define-method mime-write-entity ((entity mime-buffer-entity) filename)
(with-current-buffer (mime-buffer-entity-buffer-internal entity)
(let ((coding-system-for-write 'raw-text-dos))
(write-region (mime-buffer-entity-header-start-internal entity)
(mime-buffer-entity-body-end-internal entity)
filename))))
;;; @ entity header
;;;
;;; @ entity body
;;;
(luna-define-method mime-entity-body ((entity mime-buffer-entity))
(with-current-buffer (mime-buffer-entity-buffer-internal entity)
(buffer-substring (mime-buffer-entity-body-start-internal entity)
(mime-buffer-entity-body-end-internal entity))))
(luna-define-method mime-insert-entity-body ((entity mime-buffer-entity))
(insert-buffer-substring (mime-buffer-entity-buffer-internal entity)
(mime-buffer-entity-body-start-internal entity)
(mime-buffer-entity-body-end-internal entity))
)
(luna-define-method mime-write-entity-body ((entity mime-buffer-entity)
filename)
(with-current-buffer (mime-buffer-entity-buffer-internal entity)
(binary-write-decoded-region
(mime-buffer-entity-body-start-internal entity)
(mime-buffer-entity-body-end-internal entity)
filename)))
;;; @ entity content
;;;
(luna-define-method mime-entity-content ((entity mime-buffer-entity))
(with-current-buffer (mime-buffer-entity-buffer-internal entity)
(mime-decode-string
(buffer-substring (mime-buffer-entity-body-start-internal entity)
(mime-buffer-entity-body-end-internal entity))
(mime-entity-encoding entity))))
(luna-define-method mime-insert-entity-content ((entity mime-buffer-entity))
(insert (with-current-buffer (mime-buffer-entity-buffer-internal entity)
(mime-decode-string
(buffer-substring (mime-buffer-entity-body-start-internal entity)
(mime-buffer-entity-body-end-internal entity))
(mime-entity-encoding entity)))))
(luna-define-method mime-write-entity-content ((entity mime-buffer-entity)
filename)
(with-current-buffer (mime-buffer-entity-buffer-internal entity)
(mime-write-decoded-region (mime-buffer-entity-body-start-internal entity)
(mime-buffer-entity-body-end-internal entity)
filename
(or (mime-entity-encoding entity) "7bit"))
))
;;; @ header field
;;;
(luna-define-method mime-entity-fetch-field :around
((entity mime-buffer-entity) field-name)
(or (luna-call-next-method)
(with-current-buffer (mime-buffer-entity-buffer-internal entity)
(save-restriction
(narrow-to-region (mime-buffer-entity-header-start-internal entity)
(mime-buffer-entity-header-end-internal entity))
(let ((ret (std11-fetch-field field-name)))
(when ret
(or (symbolp field-name)
(setq field-name (intern (capitalize field-name))))
(mime-entity-set-original-header-internal
entity
(put-alist field-name ret
(mime-entity-original-header-internal entity)))
ret))))))
(luna-define-method mime-insert-header ((entity mime-buffer-entity)
&optional invisible-fields
visible-fields)
(mime-insert-header-from-buffer
(mime-buffer-entity-buffer-internal entity)
(mime-buffer-entity-header-start-internal entity)
(mime-buffer-entity-header-end-internal entity)
invisible-fields visible-fields)
)
;;; @ header buffer
;;;
;; (luna-define-method mime-entity-header-buffer ((entity mime-buffer-entity))
;; (mime-buffer-entity-buffer-internal entity)
;; )
;; (luna-define-method mime-goto-header-start-point ((entity mime-buffer-entity))
;; (set-buffer (mime-buffer-entity-buffer-internal entity))
;; (goto-char (mime-buffer-entity-header-start-internal entity))
;; )
;; (luna-define-method mime-entity-header-start-point ((entity
;; mime-buffer-entity))
;; (mime-buffer-entity-header-start-internal entity)
;; )
;; (luna-define-method mime-entity-header-end-point ((entity
;; mime-buffer-entity))
;; (mime-buffer-entity-header-end-internal entity)
;; )
;;; @ body buffer
;;;
;; (luna-define-method mime-entity-body-buffer ((entity mime-buffer-entity))
;; (mime-buffer-entity-buffer-internal entity)
;; )
;; (luna-define-method mime-goto-body-start-point ((entity mime-buffer-entity))
;; (set-buffer (mime-buffer-entity-buffer-internal entity))
;; (goto-char (mime-buffer-entity-body-start-internal entity))
;; )
;; (luna-define-method mime-goto-body-end-point ((entity mime-buffer-entity))
;; (set-buffer (mime-buffer-entity-buffer-internal entity))
;; (goto-char (mime-buffer-entity-body-end-internal entity))
;; )
;; (luna-define-method mime-entity-body-start-point ((entity mime-buffer-entity))
;; (mime-buffer-entity-body-start-internal entity)
;; )
;; (luna-define-method mime-entity-body-end-point ((entity mime-buffer-entity))
;; (mime-buffer-entity-body-end-internal entity)
;; )
;;; @ buffer (obsolete)
;;;
;; (luna-define-method mime-entity-buffer ((entity mime-buffer-entity))
;; (mime-buffer-entity-buffer-internal entity)
;; )
;; (luna-define-method mime-entity-point-min ((entity mime-buffer-entity))
;; (mime-buffer-entity-header-start-internal entity)
;; )
;; (luna-define-method mime-entity-point-max ((entity mime-buffer-entity))
;; (mime-buffer-entity-body-end-internal entity)
;; )
;;; @ children
;;;
(defun mmbuffer-parse-multipart (entity &optional representation-type)
(with-current-buffer (mime-buffer-entity-buffer-internal entity)
(or representation-type
(setq representation-type
(mime-entity-representation-type-internal entity)))
(let* ((content-type (mime-entity-content-type-internal entity))
(dash-boundary
(concat "--"
(mime-content-type-parameter content-type "boundary")))
(delimiter (concat "\n" (regexp-quote dash-boundary)))
(close-delimiter (concat delimiter "--[ \t]*$"))
(rsep (concat delimiter "[ \t]*\n"))
(dc-ctl
(if (eq (mime-content-type-subtype content-type) 'digest)
(make-mime-content-type 'message 'rfc822)
(make-mime-content-type 'text 'plain)
))
(body-start (mime-buffer-entity-body-start-internal entity))
(body-end (mime-buffer-entity-body-end-internal entity)))
(save-restriction
(goto-char body-end)
(narrow-to-region body-start
(if (re-search-backward close-delimiter nil t)
(match-beginning 0)
body-end))
(goto-char body-start)
(if (re-search-forward
(concat "^" (regexp-quote dash-boundary) "[ \t]*\n")
nil t)
(let ((cb (match-end 0))
ce ncb ret children
(node-id (mime-entity-node-id-internal entity))
(i 0))
(while (re-search-forward rsep nil t)
(setq ce (match-beginning 0))
(setq ncb (match-end 0))
(save-restriction
(narrow-to-region cb ce)
(setq ret (mime-parse-message representation-type dc-ctl
entity (cons i node-id)))
)
(setq children (cons ret children))
(goto-char (setq cb ncb))
(setq i (1+ i))
)
(setq ce (point-max))
(save-restriction
(narrow-to-region cb ce)
(setq ret (mime-parse-message representation-type dc-ctl
entity (cons i node-id)))
)
(setq children (cons ret children))
(mime-entity-set-children-internal entity (nreverse children))
)
(mime-entity-set-content-type-internal
entity (make-mime-content-type 'message 'x-broken))
nil)
))))
(defun mmbuffer-parse-encapsulated (entity &optional external
representation-type)
(mime-entity-set-children-internal
entity
(with-current-buffer (mime-buffer-entity-buffer-internal entity)
(save-restriction
(narrow-to-region (mime-buffer-entity-body-start-internal entity)
(mime-buffer-entity-body-end-internal entity))
(list (mime-parse-message
(if external
(progn
(require 'mmexternal)
'mime-external-entity)
(or representation-type
(mime-entity-representation-type-internal entity)))
nil
entity (cons 0 (mime-entity-node-id-internal entity))))))))
(luna-define-method mime-entity-children ((entity mime-buffer-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)
(mmbuffer-parse-multipart entity))
((eq primary-type 'message)
(setq sub-type (mime-content-type-subtype content-type))
(cond ((eq sub-type 'external-body)
(mmbuffer-parse-encapsulated entity 'external))
((memq sub-type '(rfc822 news))
(mmbuffer-parse-encapsulated entity)))))))
;;; @ end
;;;
(provide 'mmbuffer)
;;; mmbuffer.el ends here
|
