elmo/mmelmo.el

   1 ;;; mmelmo.el -- mm-backend by ELMO.
   2
   3 ;; Copyright 1998,1999,2000 Yuuichi Teranishi <teranisi@gohome.org>
   4
   5 ;; Author: Yuuichi Teranishi <teranisi@gohome.org>
   6 ;; Keywords: mail, net news
   7
   8 ;; This file is part of ELMO (Elisp Library for Message Orchestration).
   9
  10 ;; This program is free software; you can redistribute it and/or modify
  11 ;; it under the terms of the GNU General Public License as published by
  12 ;; the Free Software Foundation; either version 2, or (at your option)
  13 ;; any later version.
  14 ;;
  15 ;; This program is distributed in the hope that it will be useful,
  16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 ;; GNU General Public License for more details.
  19 ;;
  20 ;; You should have received a copy of the GNU General Public License
  21 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  23 ;; Boston, MA 02111-1307, USA.
  24 ;;
  25
  26 ;;; Commentary:
  27 ;;
  28
  29 ;;; Code:
  30 ;;
  31 (require 'elmo-vars)
  32 (require 'elmo-util)
  33 (require 'mime-parse)
  34 (require 'mmbuffer)
  35
  36 (require 'product)
  37 (product-provide (provide 'mmelmo) (require 'elmo-version))
  38 (require 'mmelmo-imap4)
  39
  40 (eval-and-compile
  41   (luna-define-class mime-elmo-entity (mime-buffer-entity)
  42                      (imap folder number msgdb size))
  43   (luna-define-internal-accessors 'mime-elmo-entity))
  44
  45 (defvar mmelmo-force-reload nil)
  46 (defvar mmelmo-sort-field-list nil)
  47
  48 (defvar mmelmo-header-max-column fill-column
  49   "*Inserted header is folded with this value.
  50 If function is specified, its return value is used.")
  51
  52 (defvar mmelmo-header-inserted-hook nil
  53   "*A hook called when header is inserted.")
  54
  55 (defvar mmelmo-entity-content-inserted-hook nil
  56   "*A hook called when entity-content is inserted.")
  57
  58 (defun mmelmo-get-original-buffer ()
  59   (let ((ret-val (get-buffer (concat mmelmo-entity-buffer-name "0"))))
  60     (if (not ret-val)
  61         (save-excursion
  62           (set-buffer (setq ret-val
  63                             (get-buffer-create
  64                              (concat mmelmo-entity-buffer-name "0"))))
  65           (mmelmo-original-mode)))
  66     ret-val))
  67
  68 (defun mmelmo-cleanup-entity-buffers ()
  69   "Cleanup entity buffers of mmelmo."
  70   (mapcar (lambda (x)
  71             (if (string-match mmelmo-entity-buffer-name x)
  72                 (kill-buffer x)))
  73           (mapcar 'buffer-name (buffer-list))))
  74
  75 ;; For FLIM 1-13.x
  76 (defun-maybe mime-entity-body (entity)
  77   (luna-send entity 'mime-entity-body))
  78
  79 (defun mmelmo-insert-sorted-header-from-buffer (buffer
  80                                                 start end
  81                                                 &optional invisible-fields
  82                                                 visible-fields
  83                                                 sorted-fields)
  84   (let ((the-buf (current-buffer))
  85         (mode-obj (mime-find-field-presentation-method 'wide))
  86         field-decoder
  87         f-b p f-e field-name field field-body
  88         vf-alist (sl sorted-fields))
  89     (save-excursion
  90       (set-buffer buffer)
  91       (save-restriction
  92         (narrow-to-region start end)
  93         (goto-char start)
  94         (while (re-search-forward std11-field-head-regexp nil t)
  95           (setq f-b (match-beginning 0)
  96                 p (match-end 0)
  97                 field-name (buffer-substring f-b p)
  98                 f-e (std11-field-end))
  99           (when (mime-visible-field-p field-name
 100                                       visible-fields invisible-fields)
 101             (setq field (intern
 102                          (capitalize (buffer-substring f-b (1- p))))
 103                   field-body (buffer-substring p f-e)
 104                   field-decoder (inline (mime-find-field-decoder-internal
 105                                          field mode-obj)))
 106             (setq vf-alist (append (list
 107                                     (cons field-name
 108                                           (list field-body field-decoder)))
 109                                    vf-alist))))
 110         (and vf-alist
 111              (setq vf-alist
 112                    (sort vf-alist
 113                          (function (lambda (s d)
 114                                      (let ((n 0) re
 115                                            (sf (car s))
 116                                            (df (car d)))
 117                                        (catch 'done
 118                                          (while (setq re (nth n sl))
 119                                            (setq n (1+ n))
 120                                            (and (string-match re sf)
 121                                                 (throw 'done t))
 122                                            (and (string-match re df)
 123                                                 (throw 'done nil)))
 124                                          t)))))))
 125         (with-current-buffer the-buf
 126           (while vf-alist
 127             (let* ((vf (car vf-alist))
 128                    (field-name (car vf))
 129                    (field-body (car (cdr vf)))
 130                    (field-decoder (car (cdr (cdr vf)))))
 131               (insert field-name)
 132               (insert (if field-decoder
 133                           (funcall field-decoder field-body
 134                                    (string-width field-name)
 135                                    (if (functionp mmelmo-header-max-column)
 136                                        (funcall mmelmo-header-max-column)
 137                                      mmelmo-header-max-column))
 138                         ;; Don't decode
 139                         field-body))
 140               (insert "\n"))
 141             (setq vf-alist (cdr vf-alist)))
 142           (run-hooks 'mmelmo-header-inserted-hook))))))
 143
 144 (defun mmelmo-original-mode ()
 145   (setq major-mode 'mmelmo-original-mode)
 146   (setq buffer-read-only t)
 147   (elmo-set-buffer-multibyte nil)
 148   (setq mode-name "MMELMO-Original"))
 149
 150 ;; For FLIMs without rfc2231 feature .
 151 (if (not (fboundp 'mime-parse-parameters-from-list))
 152     (defun mime-parse-parameters-from-list (attrlist)
 153       (let (ret-val)
 154         (if (not (eq (% (length attrlist) 2) 0))
 155             (message "Invalid attributes."))
 156         (while attrlist
 157           (setq ret-val (append ret-val
 158                                 (list (cons (downcase (car attrlist))
 159                                             (car (cdr attrlist))))))
 160           (setq attrlist (cdr (cdr attrlist))))
 161         ret-val)))
 162
 163 (luna-define-method initialize-instance :after ((entity mime-elmo-entity)
 164                                                 &rest init-args)
 165   "The initialization method for elmo.
 166 mime-elmo-entity has its own member variable,
 167 `imap', `folder', `msgdb' and `size'.
 168 imap:   boolean. if non-nil, entity becomes mime-elmo-imap4-entity class.
 169 folder: string.  folder name.
 170 msgdb:  msgdb of elmo.
 171 size:   size of the entity."
 172   (if (mime-elmo-entity-imap-internal entity)
 173       ;; use imap part fetching.
 174       ;; child mime-entity's class becomes `mime-elmo-imap4-entity'
 175       ;; which implements `entity-buffer' method.
 176       (progn
 177         (let (new-entity)
 178           (mime-buffer-entity-set-buffer-internal entity nil)
 179           (setq new-entity
 180                 (mmelmo-imap4-get-mime-entity
 181                  (mime-elmo-entity-folder-internal entity) ; folder
 182                  (mime-elmo-entity-number-internal entity) ; number
 183                  (mime-elmo-entity-msgdb-internal entity)  ; msgdb
 184                  ))
 185           (mime-entity-set-content-type-internal
 186            entity
 187            (mime-entity-content-type-internal new-entity))
 188           (mime-entity-set-encoding-internal
 189            entity
 190            (mime-entity-encoding-internal new-entity))
 191           (mime-entity-set-children-internal
 192            entity
 193            (mime-entity-children-internal new-entity))
 194           (mime-elmo-entity-set-size-internal
 195            entity
 196            (mime-elmo-entity-size-internal new-entity))
 197           (mime-entity-set-representation-type-internal
 198            entity 'mime-elmo-imap4-entity)
 199           entity))
 200     (set-buffer (mime-buffer-entity-buffer-internal entity))
 201     (mmelmo-original-mode)
 202     (when (mime-root-entity-p entity)
 203       (let ((buffer-read-only nil)
 204             header-end body-start)
 205         (erase-buffer)
 206         (elmo-read-msg-with-buffer-cache
 207          (mime-elmo-entity-folder-internal entity)
 208          (mime-elmo-entity-number-internal entity)
 209          (current-buffer)
 210          (mime-elmo-entity-msgdb-internal entity)
 211          mmelmo-force-reload)
 212         (goto-char (point-min))
 213         (if (re-search-forward
 214              (concat "^" (regexp-quote mail-header-separator) "$\\|^$" )
 215              nil t)
 216             (setq header-end (match-beginning 0)
 217                   body-start (if (= (match-end 0) (point-max))
 218                                  (point-max)
 219                                (1+ (match-end 0))))
 220           (setq header-end (point-min)
 221                 body-start (point-min)))
 222         (mime-buffer-entity-set-header-start-internal entity (point-min))
 223         (mime-buffer-entity-set-header-end-internal entity header-end)
 224         (mime-buffer-entity-set-body-start-internal entity body-start)
 225         (mime-buffer-entity-set-body-end-internal entity (point-max))
 226         (save-restriction
 227           (narrow-to-region (mime-buffer-entity-header-start-internal entity)
 228                             (mime-buffer-entity-header-end-internal entity))
 229           (mime-entity-set-content-type-internal
 230            entity
 231            (let ((str (std11-fetch-field "Content-Type")))
 232              (if str
 233                  (mime-parse-Content-Type str)
 234                ))))))
 235     entity))
 236
 237 (luna-define-method mime-insert-header ((entity mime-elmo-entity)
 238                                         &optional invisible-fields
 239                                         visible-fields)
 240   (mmelmo-insert-sorted-header-from-buffer
 241    (mime-buffer-entity-buffer-internal entity)
 242    (mime-buffer-entity-header-start-internal entity)
 243    (mime-buffer-entity-header-end-internal entity)
 244    invisible-fields visible-fields mmelmo-sort-field-list))
 245
 246 (luna-define-method mime-insert-text-content :around ((entity
 247                                                        mime-elmo-entity))
 248   (luna-call-next-method)
 249   (run-hooks 'mmelmo-entity-content-inserted-hook))
 250
 251 (luna-define-method mime-entity-body ((entity mime-elmo-entity))
 252   (with-current-buffer (mime-buffer-entity-buffer-internal entity)
 253     (buffer-substring (mime-buffer-entity-body-start-internal entity)
 254                       (mime-buffer-entity-body-end-internal entity))))
 255
 256 ;;(luna-define-method mime-entity-content ((entity mime-elmo-entity))
 257 ;;  (mime-decode-string
 258 ;;   (with-current-buffer (mime-buffer-entity-buffer-internal entity)
 259 ;;     (buffer-substring (mime-buffer-entity-body-start-internal entity)
 260 ;;                     (mime-buffer-entity-body-end-internal entity)))
 261 ;;   (mime-entity-encoding entity)))
 262
 263 ;;; mmelmo.el ends here