elmo/mmelmo.el

   1 ;;; mmelmo.el -- mm-backend by ELMO.
   2
   3 ;; Copyright (C) 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 (provide 'mmelmo)                       ; circular dependency
  37 (require 'mmelmo-imap4)
  38
  39 (eval-and-compile
  40   (luna-define-class mime-elmo-entity (mime-buffer-entity)
  41                      (imap folder number msgdb size))
  42   (luna-define-internal-accessors 'mime-elmo-entity))
  43
  44 (defvar mmelmo-force-reload nil)
  45 (defvar mmelmo-sort-field-list nil)
  46
  47 (defvar mmelmo-header-max-column fill-column
  48   "*Inserted header is folded with this value.
  49 If function is specified, its return value is used.")
  50
  51 (defvar mmelmo-header-inserted-hook nil
  52   "*A hook called when header is inserted.")
  53
  54 (defvar mmelmo-entity-content-inserted-hook nil
  55   "*A hook called when entity-content is inserted.")
  56
  57 (defun mmelmo-get-original-buffer ()
  58   (let ((ret-val (get-buffer (concat mmelmo-entity-buffer-name "0"))))
  59     (if (not ret-val)
  60         (save-excursion
  61           (set-buffer (setq ret-val
  62                             (get-buffer-create
  63                              (concat mmelmo-entity-buffer-name "0"))))
  64           (mmelmo-original-mode)))
  65     ret-val))
  66
  67 (defun mmelmo-cleanup-entity-buffers ()
  68   "Cleanup entity buffers of mmelmo."
  69   (mapcar (lambda (x)
  70             (if (string-match mmelmo-entity-buffer-name x)
  71                 (kill-buffer x)))
  72           (mapcar 'buffer-name (buffer-list))))
  73
  74 ;; For FLIM 1-13.x
  75 (defun-maybe mime-entity-body (entity)
  76   (luna-send entity 'mime-entity-body))
  77
  78 (defun mmelmo-insert-sorted-header-from-buffer (buffer
  79                                                 start end
  80                                                 &optional invisible-fields
  81                                                 visible-fields
  82                                                 sorted-fields)
  83   (let ((the-buf (current-buffer))
  84         (mode-obj (mime-find-field-presentation-method 'wide))
  85         field-decoder
  86         f-b p f-e field-name field field-body
  87         vf-alist (sl sorted-fields))
  88     (save-excursion
  89       (set-buffer buffer)
  90       (save-restriction
  91         (narrow-to-region start end)
  92         (goto-char start)
  93         (while (re-search-forward std11-field-head-regexp nil t)
  94           (setq f-b (match-beginning 0)
  95                 p (match-end 0)
  96                 field-name (buffer-substring f-b p)
  97                 f-e (std11-field-end))
  98           (when (mime-visible-field-p field-name
  99                                       visible-fields invisible-fields)
 100             (setq field (intern
 101                          (capitalize (buffer-substring f-b (1- p))))
 102                   field-body (buffer-substring p f-e)
 103                   field-decoder (inline (mime-find-field-decoder-internal
 104                                          field mode-obj)))
 105             (setq vf-alist (append (list
 106                                     (cons field-name
 107                                           (list field-body field-decoder)))
 108                                    vf-alist))))
 109         (and vf-alist
 110              (setq vf-alist
 111                    (sort vf-alist
 112                          (function (lambda (s d)
 113                                      (let ((n 0) re
 114                                            (sf (car s))
 115                                            (df (car d)))
 116                                        (catch 'done
 117                                          (while (setq re (nth n sl))
 118                                            (setq n (1+ n))
 119                                            (and (string-match re sf)
 120                                                 (throw 'done t))
 121                                            (and (string-match re df)
 122                                                 (throw 'done nil)))
 123                                          t)))))))
 124         (with-current-buffer the-buf
 125           (while vf-alist
 126             (let* ((vf (car vf-alist))
 127                    (field-name (car vf))
 128                    (field-body (car (cdr vf)))
 129                    (field-decoder (car (cdr (cdr vf)))))
 130               (insert field-name)
 131               (insert (if field-decoder
 132                           (funcall field-decoder field-body
 133                                    (string-width field-name)
 134                                    (if (functionp mmelmo-header-max-column)
 135                                        (funcall mmelmo-header-max-column)
 136                                      mmelmo-header-max-column))
 137                         ;; Don't decode
 138                         field-body))
 139               (insert "\n"))
 140             (setq vf-alist (cdr vf-alist)))
 141           (run-hooks 'mmelmo-header-inserted-hook))))))
 142
 143 (defun mmelmo-original-mode ()
 144   (setq major-mode 'mmelmo-original-mode)
 145   (setq buffer-read-only t)
 146   (elmo-set-buffer-multibyte nil)
 147   (setq mode-name "MMELMO-Original"))
 148
 149 ;; For FLIMs without rfc2231 feature .
 150 (if (not (fboundp 'mime-parse-parameters-from-list))
 151     (defun mime-parse-parameters-from-list (attrlist)
 152       (let (ret-val)
 153         (if (not (eq (% (length attrlist) 2) 0))
 154             (message "Invalid attributes."))
 155         (while attrlist
 156           (setq ret-val (append ret-val
 157                                 (list (cons (downcase (car attrlist))
 158                                             (car (cdr attrlist))))))
 159           (setq attrlist (cdr (cdr attrlist))))
 160         ret-val)))
 161
 162 (luna-define-method initialize-instance :after ((entity mime-elmo-entity)
 163                                                 &rest init-args)
 164   "The initialization method for elmo.
 165 mime-elmo-entity has its own member variable,
 166 `imap', `folder', `msgdb' and `size'.
 167 imap:   boolean. if non-nil, entity becomes mime-elmo-imap4-entity class.
 168 folder: string.  folder name.
 169 msgdb:  msgdb of elmo.
 170 size:   size of the entity."
 171   (if (mime-elmo-entity-imap-internal entity)
 172       ;; use imap part fetching.
 173       ;; child mime-entity's class becomes `mime-elmo-imap4-entity'
 174       ;; which implements `entity-buffer' method.
 175       (progn
 176         (let (new-entity)
 177           (mime-buffer-entity-set-buffer-internal entity nil)
 178           (setq new-entity
 179                 (mmelmo-imap4-get-mime-entity
 180                  (mime-elmo-entity-folder-internal entity) ; folder
 181                  (mime-elmo-entity-number-internal entity) ; number
 182                  (mime-elmo-entity-msgdb-internal entity)  ; msgdb
 183                  ))
 184           (mime-entity-set-content-type-internal
 185            entity
 186            (mime-entity-content-type-internal new-entity))
 187           (mime-entity-set-encoding-internal
 188            entity
 189            (mime-entity-encoding-internal new-entity))
 190           (mime-entity-set-children-internal
 191            entity
 192            (mime-entity-children-internal new-entity))
 193           (mime-elmo-entity-set-size-internal
 194            entity
 195            (mime-elmo-entity-size-internal new-entity))
 196           (mime-entity-set-representation-type-internal
 197            entity 'mime-elmo-imap4-entity)
 198           entity))
 199     (set-buffer (mime-buffer-entity-buffer-internal entity))
 200     (mmelmo-original-mode)
 201     (when (mime-root-entity-p entity)
 202       (let ((buffer-read-only nil)
 203             header-end body-start)
 204         (erase-buffer)
 205         (elmo-read-msg-with-buffer-cache
 206          (mime-elmo-entity-folder-internal entity)
 207          (mime-elmo-entity-number-internal entity)
 208          (current-buffer)
 209          (mime-elmo-entity-msgdb-internal entity)
 210          mmelmo-force-reload)
 211         (goto-char (point-min))
 212         (if (re-search-forward
 213              (concat "^" (regexp-quote mail-header-separator) "$\\|^$" )
 214              nil t)
 215             (setq header-end (match-beginning 0)
 216                   body-start (if (= (match-end 0) (point-max))
 217                                  (point-max)
 218                                (1+ (match-end 0))))
 219           (setq header-end (point-min)
 220                 body-start (point-min)))
 221         (mime-buffer-entity-set-header-start-internal entity (point-min))
 222         (mime-buffer-entity-set-header-end-internal entity header-end)
 223         (mime-buffer-entity-set-body-start-internal entity body-start)
 224         (mime-buffer-entity-set-body-end-internal entity (point-max))
 225         (save-restriction
 226           (narrow-to-region (mime-buffer-entity-header-start-internal entity)
 227                             (mime-buffer-entity-header-end-internal entity))
 228           (mime-entity-set-content-type-internal
 229            entity
 230            (let ((str (std11-fetch-field "Content-Type")))
 231              (if str
 232                  (mime-parse-Content-Type str)
 233                ))))))
 234     entity))
 235
 236 (luna-define-method mime-insert-header ((entity mime-elmo-entity)
 237                                         &optional invisible-fields
 238                                         visible-fields)
 239   (mmelmo-insert-sorted-header-from-buffer
 240    (mime-buffer-entity-buffer-internal entity)
 241    (mime-buffer-entity-header-start-internal entity)
 242    (mime-buffer-entity-header-end-internal entity)
 243    invisible-fields visible-fields mmelmo-sort-field-list))
 244
 245 (luna-define-method mime-insert-text-content :around ((entity
 246                                                        mime-elmo-entity))
 247   (luna-call-next-method)
 248   (run-hooks 'mmelmo-entity-content-inserted-hook))
 249
 250 (luna-define-method mime-entity-body ((entity mime-elmo-entity))
 251   (with-current-buffer (mime-buffer-entity-buffer-internal entity)
 252     (buffer-substring (mime-buffer-entity-body-start-internal entity)
 253                       (mime-buffer-entity-body-end-internal entity))))
 254
 255 ;;(luna-define-method mime-entity-content ((entity mime-elmo-entity))
 256 ;;  (mime-decode-string
 257 ;;   (with-current-buffer (mime-buffer-entity-buffer-internal entity)
 258 ;;     (buffer-substring (mime-buffer-entity-body-start-internal entity)
 259 ;;                     (mime-buffer-entity-body-end-internal entity)))
 260 ;;   (mime-entity-encoding entity)))
 261
 262 (require 'product)
 263 (product-provide (provide 'mmelmo) (require 'elmo-version))
 264
 265 ;;; mmelmo.el ends here