* wl/wl-summary.el (wl-summary-mode): Check with fboundp before calling `make-local...
[elisp/wanderlust.git] / elmo / elmo-mime.el
index 232e3e9..6beaea9 100644 (file)
 (require 'mmimap)
 (require 'mime-view)
 
+(eval-when-compile
+  (require 'luna)
+  (require 'elmo)            ; elmo-folder-do-each-message-entity
+  (require 'cl))
+
 ;; MIME-Entity
 (eval-and-compile
   (luna-define-class elmo-mime-entity))
@@ -44,6 +49,9 @@ MIME-MODE is a symbol which is one of the following:
   `mime'  (Can display each MIME part)
   `as-is' (Can display raw message)")
 
+(luna-define-generic elmo-mime-entity-reassembled-p (entity)
+  "Return non-nil if ENTITY is reassembled message/partial pieces.")
+
 (luna-define-generic elmo-mime-entity-display (entity preview-buffer
                                                      &optional
                                                      original-major-mode
@@ -72,16 +80,24 @@ use for keymap of representation buffer.")
                                              &optional
                                              original-major-mode
                                              keymap)
-  (mime-display-message entity
-                       preview-buffer
-                       nil
-                       keymap
-                       original-major-mode))
-
+  (let ((elmo-message-displaying t)
+       (default-mime-charset 'x-unknown))
+    (mime-display-message entity
+                         preview-buffer
+                         nil
+                         keymap
+                         original-major-mode)))
+
+(defun elmo-mime-entity-fragment-p (entity)
+  (and (not (elmo-mime-entity-reassembled-p entity))
+       (eq (mime-entity-media-type entity) 'message)
+       (eq (mime-entity-media-subtype entity) 'partial)))
 
 (eval-and-compile
   (luna-define-class mime-elmo-buffer-entity (mime-buffer-entity
-                                             elmo-mime-entity))
+                                             elmo-mime-entity)
+                    (reassembled))
+  (luna-define-internal-accessors 'mime-elmo-buffer-entity)
   (luna-define-class mime-elmo-imap-entity (mime-imap-entity
                                            elmo-mime-entity)))
 
@@ -94,11 +110,13 @@ use for keymap of representation buffer.")
 (defvar elmo-message-sorted-field-list nil)
 (defvar elmo-mime-display-header-analysis t)
 
-(defcustom elmo-mime-header-max-column fill-column
+(defcustom elmo-mime-header-max-column 'fill-column
   "*Header max column number. Default is `fill-colmn'.
+If a symbol of variable is specified, use its value in message buffer.
 If a symbol of function is specified, the function is called and its return
 value is used."
   :type '(choice (integer :tag "Column Number")
+                (variable :tag "Variable")
                 (function :tag "Function"))
   :group 'elmo)
 
@@ -117,67 +135,64 @@ value is used."
                                               visible-fields
                                               sort-fields)
   (let ((the-buf (current-buffer))
-       (mode-obj (mime-find-field-presentation-method 'wide))
-       field-decoder
-       f-b p f-e field-name field field-body
-       vf-alist (sl sort-fields))
-    (save-excursion
-      (set-buffer buffer)
+       (max-column (cond ((functionp elmo-mime-header-max-column)
+                          (funcall elmo-mime-header-max-column))
+                         ((and (symbolp elmo-mime-header-max-column)
+                               (boundp elmo-mime-header-max-column))
+                          (symbol-value elmo-mime-header-max-column))
+                         (t
+                          elmo-mime-header-max-column)))
+       vf-alist)
+    (with-current-buffer buffer
       (save-restriction
        (narrow-to-region start end)
        (goto-char start)
        (while (re-search-forward std11-field-head-regexp nil t)
-         (setq f-b (match-beginning 0)
-               p (match-end 0)
-               field-name (buffer-substring f-b p)
-               f-e (std11-field-end))
-         (when (mime-visible-field-p field-name
-                                     visible-fields invisible-fields)
-           (setq field (intern
-                        (capitalize (buffer-substring f-b (1- p))))
-                 field-body (buffer-substring p f-e)
-                 field-decoder
-                 (if elmo-mime-display-header-analysis
-                     (inline (mime-find-field-decoder-internal
-                              field mode-obj))
-                   (inline (lambda (x y z) x))))
-           (setq vf-alist (append (list
-                                   (cons field-name
-                                         (list field-body field-decoder)))
-                                  vf-alist))))
-       (and vf-alist
-            (setq vf-alist
-                  (sort vf-alist
-                        (function (lambda (s d)
-                                    (let ((n 0) re
-                                          (sf (car s))
-                                          (df (car d)))
-                                      (catch 'done
-                                        (while (setq re (nth n sl))
-                                          (setq n (1+ n))
-                                          (and (string-match re sf)
-                                               (throw 'done t))
-                                          (and (string-match re df)
-                                               (throw 'done nil)))
-                                        t)))))))
-       (with-current-buffer the-buf
-         (while vf-alist
-           (let* ((vf (car vf-alist))
-                  (field-name (car vf))
-                  (field-body (car (cdr vf)))
-                  (field-decoder (car (cdr (cdr vf)))))
-             (insert field-name)
-             (insert (if field-decoder
-                         (funcall field-decoder field-body
-                                  (string-width field-name)
-                                  (if (functionp elmo-mime-header-max-column)
-                                      (funcall elmo-mime-header-max-column)
-                                    elmo-mime-header-max-column))
-                       ;; Don't decode
-                       field-body))
-             (insert "\n"))
-           (setq vf-alist (cdr vf-alist)))
-         (run-hooks 'mmelmo-header-inserted-hook))))))
+         (let* ((field-start (match-beginning 0))
+                (name-end (match-end 0))
+                (field-name (buffer-substring field-start name-end)))
+           (when (mime-visible-field-p field-name
+                                       visible-fields invisible-fields)
+             (let* ((field (intern
+                            (capitalize
+                             (buffer-substring field-start (1- name-end)))))
+                    (field-body (buffer-substring name-end (std11-field-end)))
+                    (field-decoder
+                     (and elmo-mime-display-header-analysis
+                          (inline (mime-find-field-decoder field 'wide)))))
+               (setq vf-alist (cons (list field-name field-body field-decoder)
+                                    vf-alist)))))))
+      (and vf-alist
+          (setq vf-alist
+                (sort vf-alist
+                      (lambda (s d)
+                        (let ((sf (car s))
+                              (df (car d)))
+                          (catch 'done
+                            (dolist (re sort-fields)
+                              (when (string-match re sf)
+                                (throw 'done t))
+                              (when (string-match re df)
+                                (throw 'done nil)))
+                            t)))))))
+    (set-buffer the-buf)               ; verbose. remove me.
+    (save-excursion
+      (while vf-alist
+       (let* ((vf (car vf-alist))
+              (field-name (nth 0 vf))
+              (field-body (nth 1 vf))
+              (field-decoder (nth 2 vf)))
+         (insert field-name)
+         (insert (or (and field-decoder
+                          (ignore-errors
+                           (funcall field-decoder field-body
+                                    (string-width field-name)
+                                    max-column)))
+                     ;; Don't decode
+                     field-body))
+         (insert "\n"))
+       (setq vf-alist (cdr vf-alist)))
+      (run-hooks 'mmelmo-header-inserted-hook))))
 
 (luna-define-generic elmo-mime-insert-sorted-header (entity
                                                     &optional invisible-fields
@@ -238,6 +253,10 @@ value is used."
   ;; always return t.
   t)
 
+(luna-define-method elmo-mime-entity-reassembled-p ((entity
+                                                    mime-elmo-buffer-entity))
+  (mime-elmo-buffer-entity-reassembled-internal entity))
+
 (luna-define-method elmo-mime-entity-display-as-is ((entity
                                                     mime-elmo-buffer-entity)
                                                     preview-buffer
@@ -261,18 +280,48 @@ value is used."
                                                     &optional
                                                     original-major-mode
                                                     keymap)
-  (error "Don't support this method."))
+  (error "Does not support this method"))
 
 
-(defun elmo-message-mime-entity (folder number rawbuf
+(defun elmo-message-mime-entity (folder number rawbuf reassemble
                                        &optional
                                        ignore-cache unread entire)
   "Return the mime-entity structure of the message in the FOLDER with NUMBER.
 RAWBUF is the output buffer for original message.
+If REASSEMBLE is non-nil and MIME media type of the message is message/partial,
+the mime-entity is reassembled partial message.
 If optional argument IGNORE-CACHE is non-nil, existing cache is ignored.
 If second optional argument UNREAD is non-nil,
 keep status of the message as unread.
 If third optional argument ENTIRE is non-nil, fetch entire message at once."
+  (let (id message entity content-type)
+    (or (and reassemble
+            (setq entity (elmo-message-entity folder number))
+            (setq id (if (setq content-type (elmo-message-entity-field
+                                             entity 'content-type))
+                         (and (string-match "message/partial" content-type)
+                              (mime-content-type-parameter
+                               (mime-parse-Content-Type content-type) "id"))
+                       (and (setq message (elmo-message-mime-entity-internal
+                                           folder number rawbuf
+                                           ignore-cache unread entire))
+                            (eq (mime-entity-media-type message) 'message)
+                            (eq (mime-entity-media-subtype message) 'partial)
+                            (mime-content-type-parameter
+                             (mime-entity-content-type message) "id"))))
+            (elmo-message-reassembled-mime-entity
+             folder id rawbuf
+             (elmo-message-entity-field entity 'subject)
+             ignore-cache
+             unread))
+       message
+       (elmo-message-mime-entity-internal
+        folder number rawbuf ignore-cache unread entire))))
+
+
+(defun elmo-message-mime-entity-internal (folder number rawbuf
+                                                &optional
+                                                ignore-cache unread entire)
   (let ((strategy (elmo-find-fetch-strategy folder number
                                            ignore-cache
                                            entire)))
@@ -292,6 +341,120 @@ If third optional argument ENTIRE is non-nil, fetch entire message at once."
               (elmo-message-fetch folder number strategy unread)))
           (mime-open-entity 'elmo-buffer rawbuf)))))
 
+
+(defconst elmo-mime-inherit-field-list-from-enclosed
+  '("^Content-.*:" "^Message-Id:" "^Subject:"
+    "^Encrypted.*:" "^MIME-Version:"))
+
+(defsubst elmo-mime-make-reassembled-mime-entity (buffer)
+  (let ((entity (mime-open-entity 'elmo-buffer buffer)))
+    (mime-elmo-buffer-entity-set-reassembled-internal entity t)
+    entity))
+
+(defun elmo-message-reassembled-mime-entity (folder id rawbuf subject
+                                                   &optional
+                                                   ignore-cache
+                                                   unread)
+  (let ((cache (elmo-file-cache-get (concat "<" id ">")))
+       pieces)
+    (if (and (not ignore-cache)
+            (eq (elmo-file-cache-status cache) 'entire))
+       ;; use cache
+       (with-current-buffer rawbuf
+         (let (buffer-read-only)
+           (erase-buffer)
+           (elmo-file-cache-load (elmo-file-cache-path cache) nil))
+         (elmo-mime-make-reassembled-mime-entity rawbuf))
+      ;; reassemble fragment of the entity
+      (when (setq pieces (elmo-mime-collect-message/partial-pieces
+                         folder id
+                         (regexp-quote
+                          (if (string-match "[0-9\n]+" subject)
+                              (substring subject 0 (match-beginning 0))
+                            subject))
+                         ignore-cache unread))
+       (with-current-buffer rawbuf
+         (let (buffer-read-only
+               (outer-header (car pieces))
+               (pieces (sort (cdr pieces) (lambda (l r) (< (car l) (car r)))))
+               contents entity)
+           (erase-buffer)
+           (while pieces
+             (insert (cdr (car pieces)))
+             (setq pieces (cdr pieces)))
+           (let ((case-fold-search t))
+             (save-restriction
+               (std11-narrow-to-header)
+               (goto-char (point-min))
+               (while (re-search-forward std11-field-head-regexp nil t)
+                 (let ((field-start (match-beginning 0)))
+                   (unless (mime-visible-field-p
+                            (buffer-substring field-start (match-end 0))
+                            elmo-mime-inherit-field-list-from-enclosed
+                            '(".*"))
+                     (delete-region field-start (1+ (std11-field-end))))))))
+           (goto-char (point-min))
+           (insert outer-header)
+           ;; save cache
+           (elmo-file-cache-save (elmo-file-cache-path cache) nil)
+           (elmo-mime-make-reassembled-mime-entity rawbuf)))))))
+
+(defun elmo-mime-collect-message/partial-pieces (folder id subject-regexp
+                                                       &optional
+                                                       ignore-cache
+                                                       unread)
+  (catch 'complete
+    (with-temp-buffer
+      (set-buffer-multibyte nil)
+      (let (total header pieces)
+       (elmo-folder-do-each-message-entity (entity folder)
+         (when (string-match
+                subject-regexp
+                (elmo-message-entity-field entity 'subject))
+           (erase-buffer)
+           (let* ((message (elmo-message-mime-entity-internal
+                            folder
+                            (elmo-message-entity-number entity)
+                            (current-buffer)
+                            ignore-cache
+                            unread))
+                  (ct (mime-entity-content-type message))
+                  (the-id (or (mime-content-type-parameter ct "id") ""))
+                  number)
+             (when (string= (downcase the-id)
+                            (downcase id))
+               (setq number (string-to-number
+                             (mime-content-type-parameter ct "number")))
+               (setq pieces (cons (cons number (mime-entity-body message))
+                                  pieces))
+               (when (= number 1)
+                 (let ((case-fold-search t))
+                   (save-restriction
+                     (std11-narrow-to-header)
+                     (goto-char (point-min))
+                     (while (re-search-forward std11-field-head-regexp nil t)
+                       (let ((field-start (match-beginning 0)))
+                         (when (mime-visible-field-p
+                                (buffer-substring field-start (match-end 0))
+                                nil
+                                elmo-mime-inherit-field-list-from-enclosed)
+                           (setq header (concat
+                                         header
+                                         (buffer-substring
+                                          field-start (std11-field-end))
+                                         "\n"))))))))
+               (unless total
+                 (setq total (ignore-errors
+                               (string-to-number
+                                (mime-content-type-parameter ct "total")))))
+               (when (and total
+                          (> total 0)
+                          (>= (length pieces) total))
+                 (throw 'complete (cons header pieces)))))))))
+    ;; return value
+    nil))
+
+
 ;; Replacement of mime-display-message.
 (defun elmo-mime-display-as-is-internal (message
                                         &optional preview-buffer