wl/wl-mime.el

   1 ;;; wl-mime.el --- SEMI implementations of MIME processing on Wanderlust.
   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 Wanderlust (Yet Another Message Interface on Emacsen).
   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
  32 (require 'mime-view)
  33 (require 'mime-edit)
  34 (require 'mime-play)
  35 (require 'elmo)
  36
  37 (eval-when-compile
  38   (defalias-maybe 'pgg-decrypt-region 'ignore)
  39   (defalias-maybe 'pgg-display-output-buffer 'ignore)
  40   (defalias-maybe 'pgg-verify-region 'ignore))
  41
  42 ;;; Draft
  43
  44 (defalias 'wl-draft-editor-mode 'mime-edit-mode)
  45
  46 (defalias 'wl-draft-decode-message-in-buffer
  47   'mime-edit-decode-message-in-buffer)
  48
  49 (defun wl-draft-yank-current-message-entity ()
  50   "Yank currently displayed message entity.
  51 By setting following-method as yank-content.
  52
  53 If region is active, yank region contents instead. \(this feature is available
  54 if and only if `transient-mark-mode' \(GNU Emacs\) or `zmacs-regions' \(XEmacs\)
  55 has Non-nil value\)"
  56   (let ((wl-draft-buffer (current-buffer))
  57         (mime-view-following-method-alist
  58          (list (cons 'wl-original-message-mode
  59                      (function wl-draft-yank-to-draft-buffer))))
  60         (mime-preview-following-method-alist
  61          (list (cons 'wl-original-message-mode
  62                      (function wl-draft-yank-to-draft-buffer))))
  63         (message-buffer (wl-current-message-buffer)))
  64     (unless message-buffer
  65       (error "No message."))
  66     (if (get-buffer message-buffer)
  67         (save-excursion
  68           (set-buffer (wl-current-message-buffer))
  69           (save-restriction
  70             (widen)
  71             (if (wl-region-exists-p)
  72                 (wl-mime-preview-follow-current-region)
  73               (mime-preview-follow-current-entity)))))))
  74
  75 ;; modified mime-preview-follow-current-entity from mime-view.el
  76 (defun wl-mime-preview-follow-current-region ()
  77   "Write follow message to current region.
  78 It calls following-method selected from variable
  79 `mime-preview-following-method-alist'."
  80   (interactive)
  81   (let ((r-beg (region-beginning))
  82         (r-end (region-end))
  83         (entity (get-text-property (point-min)
  84                                    'mime-view-entity)))
  85     (let* ((mode (mime-preview-original-major-mode 'recursive))
  86            (new-name
  87             (format "%s-active-region" (buffer-name)))
  88            new-buf
  89            (the-buf (current-buffer))
  90            fields)
  91       (save-excursion
  92         (set-buffer (setq new-buf (get-buffer-create new-name)))
  93         (erase-buffer)
  94         (insert ?\n)
  95         (insert-buffer-substring the-buf r-beg r-end)
  96         (goto-char (point-min))
  97         (let ((current-entity
  98                (if (and (eq (mime-entity-media-type entity) 'message)
  99                         (eq (mime-entity-media-subtype entity) 'rfc822))
 100                    (car (mime-entity-children entity))
 101                  entity)))
 102           (while (and current-entity
 103                       (if (and (eq (mime-entity-media-type
 104                                     current-entity) 'message)
 105                                (eq (mime-entity-media-subtype
 106                                     current-entity) 'rfc822))
 107                           nil
 108                         (mime-insert-header current-entity fields)
 109                         t))
 110             (setq fields (std11-collect-field-names)
 111                   current-entity (mime-entity-parent current-entity))
 112             ))
 113         (let ((rest mime-view-following-required-fields-list)
 114               field-name ret)
 115           (while rest
 116             (setq field-name (car rest))
 117             (or (std11-field-body field-name)
 118                 (progn
 119                   (save-excursion
 120                     (set-buffer the-buf)
 121                     (let ((entity (when mime-mother-buffer
 122                                     (set-buffer mime-mother-buffer)
 123                                     (get-text-property (point)
 124                                                        'mime-view-entity))))
 125                       (while (and entity
 126                                   (null (setq ret (mime-entity-fetch-field
 127                                                    entity field-name))))
 128                         (setq entity (mime-entity-parent entity)))))
 129                   (if ret
 130                       (insert (concat field-name ": " ret "\n"))
 131                     )))
 132             (setq rest (cdr rest))
 133             ))
 134         )
 135       (let ((f (cdr (assq mode mime-preview-following-method-alist))))
 136         (if (functionp f)
 137             (funcall f new-buf)
 138           (message
 139            "Sorry, following method for %s is not implemented yet."
 140            mode)
 141           ))
 142       )))
 143
 144 (defalias 'wl-draft-enclose-digest-region 'mime-edit-enclose-digest-region)
 145
 146 (defun wl-draft-attribute-recipients ()
 147   (concat (mapconcat
 148            'identity
 149            (wl-draft-deduce-address-list
 150             (current-buffer)
 151             (point-min)
 152             (save-excursion
 153               (goto-char (point-min))
 154               (re-search-forward
 155                (concat
 156                 "^"
 157                 (regexp-quote mail-header-separator)
 158                 "$")
 159                nil t)
 160               (point)))
 161            ", ")))
 162
 163 (defun wl-draft-attribute-envelope-from ()
 164   (or wl-envelope-from
 165       (wl-address-header-extract-address wl-from)))
 166
 167 (defun wl-draft-attribute-smtp-posting-server ()
 168   (or wl-smtp-posting-server
 169       (progn (require 'smtp) smtp-server)
 170       "localhost"))
 171
 172 (defun wl-draft-attribute-smtp-posting-port ()
 173   (or wl-smtp-posting-port
 174       (progn (require 'smtp) smtp-service)))
 175
 176 (defun wl-draft-attribute-value (attr)
 177   (let ((name (symbol-name attr))
 178         fsymbol symbol)
 179     (cond ((and (setq fsymbol (intern-soft
 180                                (format "wl-draft-attribute-%s" name)))
 181                 (fboundp fsymbol))
 182            (funcall fsymbol))
 183           ((and (setq symbol (intern-soft (format "wl-%s" name)))
 184                 (boundp symbol))
 185            (symbol-value symbol))
 186           (t
 187            attr))))
 188
 189 (defun wl-draft-preview-message ()
 190   "Preview editing message."
 191   (interactive)
 192   (let* (attribute-list
 193          (orig-buffer (current-buffer))
 194          (current-point (point))
 195          (config-exec-flag wl-draft-config-exec-flag)
 196          (parent-folder wl-draft-parent-folder)
 197          (mime-display-header-hook 'wl-highlight-headers)
 198          (mime-header-encode-method-alist
 199           (append
 200            '((wl-draft-eword-encode-address-list
 201               .  (To Cc Bcc Resent-To Resent-Cc Resent-Bcc From)))
 202            (if (boundp 'mime-header-encode-method-alist)
 203                (symbol-value 'mime-header-encode-method-alist))))
 204          mime-view-ignored-field-list   ; all header.
 205          (mime-edit-translate-buffer-hook
 206           (append
 207            (list
 208             (lambda ()
 209               (let ((wl-draft-config-exec-flag config-exec-flag)
 210                     (wl-draft-parent-folder parent-folder)
 211                     (copy-buffer (current-buffer)))
 212                 (with-current-buffer orig-buffer
 213                   (wl-copy-local-variables
 214                    orig-buffer
 215                    copy-buffer
 216                    (append wl-draft-config-variables
 217                            (wl-draft-clone-local-variables))))
 218                 (goto-char current-point)
 219                 (run-hooks 'wl-draft-send-hook)
 220                 (condition-case err
 221                     (setq attribute-list
 222                           (mapcar
 223                            (lambda (attr)
 224                              (cons attr (wl-draft-attribute-value attr)))
 225                            wl-draft-preview-attributes-list))
 226                   (error
 227                    (kill-buffer (current-buffer))
 228                    (signal (car err) (cdr err)))))))
 229            mime-edit-translate-buffer-hook)))
 230     (mime-edit-preview-message)
 231     (let ((buffer-read-only nil))
 232       (when wl-highlight-body-too
 233         (wl-highlight-body))
 234       (run-hooks 'wl-draft-preview-message-hook))
 235     (make-local-variable 'kill-buffer-hook)
 236     (add-hook 'kill-buffer-hook
 237               (lambda ()
 238                 (when (get-buffer-window
 239                        wl-draft-preview-attributes-buffer-name)
 240                   (select-window (get-buffer-window
 241                                   wl-draft-preview-attributes-buffer-name))
 242                   (delete-window))
 243                 (when (get-buffer wl-draft-preview-attributes-buffer-name)
 244                   (kill-buffer (get-buffer
 245                                 wl-draft-preview-attributes-buffer-name)))))
 246     (if (not wl-draft-preview-attributes)
 247         (message (concat "Recipients: "
 248                          (cdr (assq 'reciepient attribute-list))))
 249       (ignore-errors ; in case when the window is too small
 250         (let* ((cur-win (selected-window))
 251                (size (min
 252                       (- (window-height cur-win)
 253                          window-min-height 1)
 254                       (- (window-height cur-win)
 255                          (max
 256                           window-min-height
 257                           (1+ wl-draft-preview-attributes-buffer-lines))))))
 258           (split-window cur-win (if (> size 0) size window-min-height))
 259           (select-window (next-window))
 260           (let ((pop-up-windows nil))
 261             (switch-to-buffer (get-buffer-create
 262                                wl-draft-preview-attributes-buffer-name)))
 263           (with-current-buffer
 264               (get-buffer wl-draft-preview-attributes-buffer-name)
 265             (setq buffer-read-only t)
 266             (let (buffer-read-only)
 267               (erase-buffer)
 268               (dolist (pair attribute-list)
 269                 (insert (capitalize (symbol-name (car pair))) ": "
 270                         (or (cdr pair) "")
 271                         "\n"))
 272               (goto-char (point-min))
 273               (wl-highlight-headers)))
 274           (select-window cur-win))))))
 275
 276 (defalias 'wl-draft-caesar-region  'mule-caesar-region)
 277
 278 (defalias 'wl-draft-insert-message 'mime-edit-insert-message)
 279
 280 (defalias 'wl-draft-insert-mail 'mime-edit-insert-mail)
 281
 282 ;;; Message
 283
 284 (defun wl-message-decode-mode (outbuf inbuf)
 285   (let ((mime-view-content-header-filter-hook 'wl-highlight-headers)
 286         (mime-display-header-hook 'wl-highlight-headers))
 287     (mime-view-mode nil nil nil inbuf outbuf)))
 288
 289 (defun wl-message-decode-with-all-header (outbuf inbuf)
 290   (let ((mime-view-ignored-field-regexp "^:$")
 291         (mime-view-content-header-filter-hook 'wl-highlight-headers)
 292         (mime-display-header-hook 'wl-highlight-headers)
 293         mime-view-ignored-field-list)
 294     (mime-view-mode nil nil nil inbuf outbuf)))
 295
 296 (defun wl-message-delete-mime-out-buf ()
 297   (let (mime-out-buf mime-out-win)
 298     (if (setq mime-out-buf (get-buffer mime-echo-buffer-name))
 299         (if (setq mime-out-win (get-buffer-window mime-out-buf))
 300             (delete-window mime-out-win)))))
 301
 302 (defun wl-message-request-partial (folder number)
 303   (elmo-set-work-buf
 304    (elmo-message-fetch (wl-folder-get-elmo-folder folder)
 305                        number
 306                        (elmo-make-fetch-strategy 'entire)
 307                        nil
 308                        (current-buffer)
 309                        'unread)
 310    (mime-parse-buffer nil)))
 311
 312 (defalias 'wl-message-read              'mime-preview-scroll-up-entity)
 313 (defalias 'wl-message-next-content      'mime-preview-move-to-next)
 314 (defalias 'wl-message-prev-content      'mime-preview-move-to-previous)
 315 (defalias 'wl-message-play-content      'mime-preview-play-current-entity)
 316 (defalias 'wl-message-extract-content   'mime-preview-extract-current-entity)
 317 (defalias 'wl-message-quit              'mime-preview-quit)
 318 (defalias 'wl-message-button-dispatcher-internal
 319   'mime-button-dispatcher)
 320
 321 (defsubst wl-mime-node-id-to-string (node-id)
 322   (if (consp node-id)
 323       (mapconcat (function (lambda (num) (format "%s" (1+ num))))
 324                  (reverse node-id)
 325                  ".")
 326     "0"))
 327
 328 (defun wl-message-delete-current-part ()
 329   "Delete a part under the cursor from the multipart message."
 330   (interactive)
 331   (save-restriction
 332     (widen)
 333     (let* ((entity (get-text-property (point) 'mime-view-entity))
 334            (node-id (mime-entity-node-id entity))
 335            (header-start (mime-buffer-entity-header-start-internal entity))
 336            (body-end (mime-buffer-entity-body-end-internal entity))
 337            (folder (wl-folder-get-elmo-folder wl-message-buffer-cur-folder))
 338            (number wl-message-buffer-cur-number)
 339            (msgid (elmo-message-field folder number 'message-id))
 340            (orig-buf wl-message-buffer-original-buffer))
 341       (if (eq (luna-class-name entity) 'mime-elmo-imap-entity)
 342           (error "Please fetch the entire message (by typing 'C-u .') and try again"))
 343       (with-current-buffer orig-buf
 344         (unless (string-equal
 345                  (buffer-string)
 346                  (elmo-message-fetch folder number
 347                                      (elmo-make-fetch-strategy 'entire)))
 348           (error "Buffer content differs from actual message")))
 349       (when (and (elmo-folder-writable-p folder)
 350                  (buffer-live-p orig-buf)
 351                  node-id
 352                  (yes-or-no-p
 353                   (format "Do you really want to delete part %s? "
 354                           (wl-mime-node-id-to-string node-id))))
 355         (when (with-temp-buffer
 356                 (insert-buffer orig-buf)
 357                 (delete-region header-start body-end)
 358                 (goto-char header-start)
 359                 (insert "Content-Type: text/plain; charset=US-ASCII\n\n")
 360                 (insert "** This part has been removed by Wanderlust **\n\n")
 361                 (elmo-folder-append-buffer folder))
 362
 363           (elmo-folder-move-messages
 364            folder (list number)
 365            (wl-folder-get-elmo-folder wl-trash-folder))
 366           (when (and (elmo-cache-get-path msgid)
 367                      (file-exists-p (elmo-cache-get-path msgid)))
 368             (delete-file (elmo-cache-get-path msgid)))
 369
 370           (mime-preview-quit)
 371           (wl-summary-delete-messages-on-buffer (list number))
 372           (wl-summary-toggle-disp-msg 'off)
 373           (setq wl-message-buffer nil)
 374           (wl-summary-sync nil "update"))))))
 375
 376 (defun wl-message-decrypt-pgp-nonmime ()
 377   "Decrypt PGP encrypted region"
 378   (interactive)
 379   (require 'pgg)
 380   (save-excursion
 381     (beginning-of-line)
 382     (if (or (re-search-forward "^-+END PGP MESSAGE-+$" nil t)
 383             (re-search-backward "^-+END PGP MESSAGE-+$" nil t))
 384         (let (beg end status)
 385           (setq end (match-end 0))
 386           (if (setq beg (re-search-backward "^-+BEGIN PGP MESSAGE-+$" nil t))
 387               (let ((inhibit-read-only t)
 388                     (buffer-file-coding-system wl-cs-autoconv))
 389                 (setq status (pgg-decrypt-region beg end))
 390                 (pgg-display-output-buffer beg end status))
 391             (message "Cannot find pgp encrypted region")))
 392       (message "Cannot find pgp encrypted region"))))
 393
 394 (defun wl-message-verify-pgp-nonmime ()
 395   "Verify PGP signed region"
 396   (interactive)
 397   (require 'pgg)
 398   (save-excursion
 399     (beginning-of-line)
 400     (if (and (or (re-search-forward "^-+END PGP SIGNATURE-+$" nil t)
 401                  (re-search-backward "^-+END PGP SIGNATURE-+$" nil t))
 402              (re-search-backward "^-+BEGIN PGP SIGNED MESSAGE-+$" nil t))
 403         (let (status m-beg)
 404           (let* ((beg (point))
 405                  (situation (mime-preview-find-boundary-info))
 406                  (p-end (aref situation 1))
 407                  (entity (aref situation 2))
 408                  (count 0))
 409             (goto-char p-end)
 410             (while (< beg (point))
 411               (if (re-search-backward "^-+BEGIN PGP SIGNED MESSAGE-+$" nil t)
 412                   (setq count (+ count 1))
 413                 (debug)))
 414             (with-temp-buffer
 415               (set-buffer-multibyte nil)
 416               (insert (mime-entity-body entity))
 417               (goto-char (point-max))
 418               (while (> count 0)
 419                 (if (re-search-backward "^-+BEGIN PGP SIGNED MESSAGE-+$" nil t)
 420                     (setq count (- count 1))
 421                   (debug)))
 422               (let ((r-beg (point))
 423                     (r-end (re-search-forward "^-+END PGP SIGNATURE-+$" nil t)))
 424                 (if r-end
 425                     (setq status (pgg-verify-region r-beg r-end nil 'fetch))
 426                   (debug)))))
 427           (mime-show-echo-buffer)
 428           (set-buffer mime-echo-buffer-name)
 429           (set-window-start
 430            (get-buffer-window mime-echo-buffer-name)
 431            (point-max))
 432           (setq m-beg (point))
 433           (insert-buffer-substring
 434            (if status pgg-output-buffer pgg-errors-buffer))
 435           (decode-coding-region m-beg (point) wl-cs-autoconv))
 436       (message "Cannot find pgp signed region"))))
 437
 438 ;; XXX: encrypted multipart isn't represented as multipart
 439 (defun wl-mime-preview-application/pgp (parent-entity entity situation)
 440   (require 'pgg)
 441   (goto-char (point-max))
 442   (let ((p (point))
 443         raw-buf to-buf representation-type child-entity)
 444     (goto-char p)
 445     (save-restriction
 446       (narrow-to-region p p)
 447       (setq to-buf (current-buffer))
 448       (with-temp-buffer
 449         (setq raw-buf (current-buffer))
 450         (mime-insert-entity entity)
 451         (when (progn
 452                 (goto-char (point-min))
 453                 (re-search-forward "^-+BEGIN PGP MESSAGE-+$" nil t))
 454           (pgg-decrypt-region (point-min)(point-max))
 455           (delete-region (point-min) (point-max))
 456           (insert-buffer pgg-output-buffer)
 457           (setq representation-type 'elmo-buffer))
 458         (setq child-entity (mime-parse-message
 459                             (mm-expand-class-name representation-type)
 460                             nil
 461                             parent-entity
 462                             (mime-entity-node-id-internal parent-entity)))
 463         (mime-display-entity
 464          child-entity
 465          nil
 466          `((header . visible)
 467            (body . visible)
 468            (entity-button . invisible))
 469          to-buf)))))
 470
 471 (defun wl-mime-preview-application/pgp-encrypted (entity situation)
 472   (let* ((entity-node-id (mime-entity-node-id entity))
 473          (mother (mime-entity-parent entity))
 474          (knum (car entity-node-id))
 475          (onum (if (> knum 0)
 476                    (1- knum)
 477                  (1+ knum)))
 478          (orig-entity (nth onum (mime-entity-children mother))))
 479     (wl-mime-preview-application/pgp entity orig-entity situation)))
 480
 481 ;;; Summary
 482 (defun wl-summary-burst-subr (message-entity target number)
 483   ;; returns new number.
 484   (let (content-type entity)
 485     (setq content-type (mime-entity-content-type message-entity))
 486     (cond ((eq (cdr (assq 'type content-type)) 'multipart)
 487            (dolist (entity (mime-entity-children message-entity))
 488              (setq number (wl-summary-burst-subr
 489                            entity
 490                            target
 491                            number))))
 492           ((and (eq (cdr (assq 'type content-type)) 'message)
 493                 (eq (cdr (assq 'subtype content-type)) 'rfc822))
 494            (message "Bursting...%s" (setq number (+ 1 number)))
 495            (setq entity
 496                  (car (mime-entity-children message-entity)))
 497            (with-temp-buffer
 498              (insert (mime-entity-body message-entity))
 499              (elmo-folder-append-buffer target))))
 500     number))
 501
 502 (defun wl-summary-burst (&optional arg)
 503   "De-capsulate embedded messages in MIME format.
 504 With ARG, ask destination folder."
 505   (interactive "P")
 506   (let ((raw-buf (wl-summary-get-original-buffer))
 507         (view-buf wl-message-buffer)
 508         children message-entity content-type target-name target)
 509     (save-excursion
 510       (setq target wl-summary-buffer-elmo-folder)
 511       (when (or arg (not (elmo-folder-writable-p target)))
 512         (setq target-name (wl-summary-read-folder wl-default-folder "to extract to"))
 513         (setq target (wl-folder-get-elmo-folder target-name)))
 514       (wl-summary-set-message-buffer-or-redisplay)
 515       (with-current-buffer view-buf
 516         (setq message-entity (get-text-property (point-min) 'mime-view-entity)))
 517       (when message-entity
 518         (message "Bursting...")
 519         (with-current-buffer raw-buf
 520           (wl-summary-burst-subr message-entity target 0))
 521         (message "Bursting...done"))
 522       (if (elmo-folder-plugged-p target)
 523           (elmo-folder-check target)))
 524     (when (or (not target-name)
 525               (string= wl-summary-buffer-folder-name target-name))
 526       (save-excursion (wl-summary-sync-update)))))
 527
 528 ;; internal variable.
 529 (defvar wl-mime-save-directory nil "Last saved directory.")
 530 ;;; Yet another save method.
 531 (defun wl-mime-save-content (entity situation)
 532   (let ((filename (read-file-name "Save to file: "
 533                                   (expand-file-name
 534                                    (or (mime-entity-safe-filename entity)
 535                                        ".")
 536                                    (or wl-mime-save-directory
 537                                        wl-temporary-file-directory)))))
 538     (while (file-directory-p filename)
 539       (setq filename (read-file-name "Please set filename (not directory): "
 540                                      filename)))
 541     (if (and (file-exists-p filename)
 542              (not (yes-or-no-p (format "File %s exists. Save anyway? "
 543                                        filename))))
 544         (message "Not saved")
 545       (setq wl-mime-save-directory (file-name-directory filename))
 546       (mime-write-entity-content entity filename))))
 547
 548 ;;; Yet another combine method.
 549 (defun wl-mime-combine-message/partial-pieces (entity situation)
 550   "Internal method for wl to combine message/partial messages automatically."
 551   (interactive)
 552   (let* ((folder (save-excursion
 553                    (set-buffer wl-message-buffer-cur-summary-buffer)
 554                    wl-summary-buffer-elmo-folder))
 555          (mime-display-header-hook 'wl-highlight-headers)
 556          (folder wl-message-buffer-cur-folder)
 557          (id (or (cdr (assoc "id" situation)) ""))
 558          (mother (current-buffer))
 559          (summary-buf wl-message-buffer-cur-summary-buffer)
 560          subject-id overviews
 561          (root-dir (expand-file-name
 562                     (concat "m-prts-" (user-login-name))
 563                     temporary-file-directory))
 564          full-file point)
 565     (setq root-dir (concat root-dir "/" (replace-as-filename id)))
 566     (setq full-file (concat root-dir "/FULL"))
 567     (if (or (file-exists-p full-file)
 568             (not (y-or-n-p "Merge partials? ")))
 569         (with-current-buffer mother
 570           (mime-store-message/partial-piece entity situation)
 571           (setq wl-message-buffer-cur-summary-buffer summary-buf)
 572           (make-variable-buffer-local 'mime-preview-over-to-next-method-alist)
 573           (setq mime-preview-over-to-next-method-alist
 574                 (cons (cons 'mime-show-message-mode 'wl-message-exit)
 575                       mime-preview-over-to-next-method-alist))
 576           (make-variable-buffer-local 'mime-preview-over-to-previous-method-alist)
 577           (setq mime-preview-over-to-previous-method-alist
 578                 (cons (cons 'mime-show-message-mode 'wl-message-exit)
 579                       mime-preview-over-to-previous-method-alist)))
 580       (setq subject-id
 581             (eword-decode-string
 582              (decode-mime-charset-string
 583               (mime-entity-read-field entity 'Subject)
 584               wl-summary-buffer-mime-charset)))
 585       (if (string-match "[0-9\n]+" subject-id)
 586           (setq subject-id (substring subject-id 0 (match-beginning 0))))
 587       (catch 'tag
 588         (elmo-folder-do-each-message-entity (entity folder)
 589           (when (string-match
 590                  (regexp-quote subject-id)
 591                  (elmo-message-entity-field entity 'subject))
 592             (let* ((message
 593                     ;; request message at the cursor in Subject buffer.
 594                     (wl-message-request-partial
 595                      folder
 596                      (elmo-message-entity-number entity)))
 597                    (situation (mime-entity-situation message))
 598                    (the-id (or (cdr (assoc "id" situation)) "")))
 599               (when (string= (downcase the-id)
 600                              (downcase id))
 601                 (with-current-buffer mother
 602                   (mime-store-message/partial-piece message situation))
 603                 (if (file-exists-p full-file)
 604                     (throw 'tag nil))))))
 605         (message "Not all partials found.")))))
 606
 607 (defun wl-mime-display-text/plain (entity situation)
 608   (let ((beg (point)))
 609     (mime-display-text/plain entity situation)
 610     (wl-highlight-message beg (point-max) t t)))
 611
 612 (defun wl-mime-display-header (entity situation)
 613   (let ((elmo-message-ignored-field-list
 614          (if wl-message-buffer-all-header-flag
 615              nil
 616            wl-message-ignored-field-list))
 617         (elmo-message-visible-field-list wl-message-visible-field-list)
 618         (elmo-message-sorted-field-list wl-message-sort-field-list))
 619     (elmo-mime-insert-header entity situation)
 620     (wl-highlight-headers)))
 621
 622 (defun wl-mime-decrypt-application/pgp-encrypted (entity situation)
 623   (let ((summary-buffer wl-message-buffer-cur-summary-buffer)
 624         (original-buffer wl-message-buffer-original-buffer))
 625     (mime-decrypt-application/pgp-encrypted entity situation)
 626     (setq wl-message-buffer-cur-summary-buffer summary-buffer)
 627     (setq wl-message-buffer-original-buffer original-buffer)))
 628
 629
 630 ;;; Setup methods.
 631 (defun wl-mime-setup ()
 632   (set-alist 'mime-preview-quitting-method-alist
 633              'wl-original-message-mode 'wl-message-exit)
 634   (set-alist 'mime-view-over-to-previous-method-alist
 635              'wl-original-message-mode 'wl-message-exit)
 636   (set-alist 'mime-view-over-to-next-method-alist
 637              'wl-original-message-mode 'wl-message-exit)
 638   (set-alist 'mime-preview-over-to-previous-method-alist
 639              'wl-original-message-mode 'wl-message-exit)
 640   (set-alist 'mime-preview-over-to-next-method-alist
 641              'wl-original-message-mode 'wl-message-exit)
 642   (add-hook 'wl-summary-redisplay-hook 'wl-message-delete-mime-out-buf)
 643   (add-hook 'wl-message-exit-hook 'wl-message-delete-mime-out-buf)
 644
 645   (ctree-set-calist-strictly
 646    'mime-preview-condition
 647    '((type . text) (subtype . plain)
 648      (body . visible)
 649      (body-presentation-method . wl-mime-display-text/plain)
 650      (major-mode . wl-original-message-mode)))
 651
 652   (ctree-set-calist-strictly
 653    'mime-preview-condition
 654    '((type . application)(subtype . pgp-encrypted)
 655      (encoding . t)
 656      (body . invisible)
 657      (body-presentation-method . wl-mime-preview-application/pgp-encrypted)
 658      (major-mode . wl-original-message-mode)))
 659
 660   (ctree-set-calist-strictly
 661    'mime-acting-condition
 662    '((type . message) (subtype . partial)
 663      (method .  wl-mime-combine-message/partial-pieces)
 664      (request-partial-message-method . wl-message-request-partial)
 665      (major-mode . wl-original-message-mode)))
 666
 667   (ctree-set-calist-strictly
 668    'mime-acting-condition
 669    '((type . application) (subtype . pgp-encrypted)
 670      (method . wl-mime-decrypt-application/pgp-encrypted)
 671      (major-mode . wl-original-message-mode)))
 672
 673   (ctree-set-calist-strictly
 674    'mime-acting-condition
 675    '((mode . "extract")
 676      (major-mode . wl-original-message-mode)
 677      (method . wl-mime-save-content)))
 678   (set-alist 'mime-preview-following-method-alist
 679              'wl-original-message-mode
 680              (function wl-message-follow-current-entity))
 681   (set-alist 'mime-view-following-method-alist
 682              'wl-original-message-mode
 683              (function wl-message-follow-current-entity))
 684   (set-alist 'mime-edit-message-inserter-alist
 685              'wl-draft-mode (function wl-draft-insert-current-message))
 686   (set-alist 'mime-edit-mail-inserter-alist
 687              'wl-draft-mode (function wl-draft-insert-get-message))
 688   (set-alist 'mime-edit-split-message-sender-alist
 689              'wl-draft-mode
 690              (cdr (assq 'mail-mode mime-edit-split-message-sender-alist)))
 691   (set-alist 'mime-raw-representation-type-alist
 692              'wl-original-message-mode 'binary)
 693   ;; Sort and highlight header fields.
 694   (or wl-message-ignored-field-list
 695       (setq wl-message-ignored-field-list
 696             mime-view-ignored-field-list))
 697   (or wl-message-visible-field-list
 698       (setq wl-message-visible-field-list
 699             mime-view-visible-field-list))
 700   (set-alist 'mime-header-presentation-method-alist
 701              'wl-original-message-mode
 702              'wl-mime-display-header)
 703   ;; To avoid overriding wl-draft-mode-map.
 704   (when (boundp 'mime-setup-signature-key-alist)
 705     (unless (assq 'wl-draft-mode mime-setup-signature-key-alist)
 706       (setq mime-setup-signature-key-alist
 707             (cons '(wl-draft-mode . "\C-c\C-w")
 708                   mime-setup-signature-key-alist)))))
 709
 710 (require 'product)
 711 (product-provide (provide 'wl-mime) (require 'wl-version))
 712
 713 ;;; wl-mime.el ends here