X-Git-Url: http://git.chise.org/gitweb/?a=blobdiff_plain;f=mime.el;h=cc3ef2000c5910a6d5fe0fc593064075273317d4;hb=fe755ea52a6124d8aab0ff3708e1fe2a321ce044;hp=84872fff56a9b6f3b5b3ac3a28ae3f0e3c7bf1fb;hpb=a2b5a8eb700afc58db46e3cd58129d85a9059bf4;p=elisp%2Fflim.git

diff --git a/mime.el b/mime.el
index 84872ff..cc3ef20 100644
--- a/mime.el
+++ b/mime.el
@@ -60,32 +60,175 @@ current-buffer, and return it.")
   "Parse BUFFER as a MIME message.")
 
 
-;;; @ MIME entity
+;;; @ Entity Representation and Implementation
 ;;;
 
-(defun mime-entity-fetch-field (entity field-name)
+(defvar mime-entity-implementation-alist nil)
+
+(defsubst mime-find-function (service type)
+  (let ((imps (cdr (assq type mime-entity-implementation-alist))))
+    (if imps
+	(let ((func (cdr (assq service imps))))
+	  (unless func
+	    (setq func (intern (format "mm%s-%s" type service)))
+	    (set-alist 'mime-entity-implementation-alist
+		       type (put-alist service func imps))
+	    )
+	  func)
+      (let ((prefix (format "mm%s" type)))
+	(require (intern prefix))
+	(let ((func (intern (format "%s-%s" prefix service))))
+	  (set-alist 'mime-entity-implementation-alist
+		     type
+		     (list (cons service func)))
+	  func)))))
+
+(defsubst mime-entity-function (entity service)
+  (mime-find-function service
+		      (mime-entity-representation-type-internal entity)))
+
+(defsubst mime-entity-send (entity service &rest args)
+  (apply (mime-find-function
+	  service (mime-entity-representation-type-internal entity))
+	 entity
+	 args))
+
+(defun mime-open-entity (type location)
+  "Open an entity and return it.
+TYPE is representation-type.
+LOCATION is location of entity.  Specification of it is depended on
+representation-type."
+  (funcall (mime-find-function 'open-entity type) location)
+  )
+
+(defun mime-entity-cooked-p (entity)
+  "Return non-nil if contents of ENTITY has been already code-converted."
+  (funcall (mime-entity-function entity 'cooked-p))
+  )
+
+
+;;; @ Entity as node of message
+;;;
+
+(defalias 'mime-entity-children	'mime-entity-children-internal)
+
+(defalias 'mime-entity-node-id 'mime-entity-node-id-internal)
+
+(defun mime-entity-number (entity)
+  "Return entity-number of ENTITY."
+  (reverse (mime-entity-node-id-internal entity)))
+
+(defun mime-find-entity-from-number (entity-number &optional message)
+  "Return entity from ENTITY-NUMBER in MESSAGE.
+If MESSAGE is not specified, `mime-message-structure' is used."
+  (or message
+      (setq message mime-message-structure))
+  (let ((sn (car entity-number)))
+    (if (null sn)
+	message
+      (let ((rc (nth sn (mime-entity-children message))))
+	(if rc
+	    (mime-find-entity-from-number (cdr entity-number) rc)
+	  ))
+      )))
+
+(defun mime-find-entity-from-node-id (entity-node-id &optional message)
+  "Return entity from ENTITY-NODE-ID in MESSAGE.
+If MESSAGE is not specified, `mime-message-structure' is used."
+  (mime-find-entity-from-number (reverse entity-node-id) message))
+
+(defun mime-entity-parent (entity &optional message)
+  "Return mother entity of ENTITY.
+If MESSAGE is not specified, `mime-message-structure' in the buffer of
+ENTITY is used."
+  (mime-find-entity-from-node-id
+   (cdr (mime-entity-node-id entity))
+   (or message
+       (save-excursion
+	 (set-buffer (mime-entity-buffer entity))
+	 mime-message-structure))))
+
+(defun mime-root-entity-p (entity)
+  "Return t if ENTITY is root-entity (message)."
+  (null (mime-entity-node-id entity)))
+
+
+;;; @ Entity Buffer
+;;;
+
+(defun mime-entity-buffer (entity)
+  (or (mime-entity-buffer-internal entity)
+      (mime-entity-send entity 'entity-buffer)))
+
+(defun mime-entity-point-min (entity)
+  (mime-entity-send entity 'entity-point-min))
+
+(defun mime-entity-point-max (entity)
+  (mime-entity-send entity 'entity-point-max))
+
+(defun mime-entity-header-start (entity)
+  (or (mime-entity-header-start-internal entity)
+      (mime-entity-send entity 'entity-header-start)))
+
+(defun mime-entity-header-end (entity)
+  (or (mime-entity-header-end-internal entity)
+      (mime-entity-send entity 'entity-header-end)))
+
+(defun mime-entity-body-start (entity)
+  (or (mime-entity-body-start-internal entity)
+      (mime-entity-send entity 'entity-body-start)))
+
+(defun mime-entity-body-end (entity)
+  (or (mime-entity-body-end-internal entity)
+      (mime-entity-send entity 'entity-body-end)))
+
+
+;;; @ Entity Header
+;;;
+
+(defun mime-fetch-field (field-name &optional entity)
   (or (symbolp field-name)
       (setq field-name (intern (capitalize (capitalize field-name)))))
-  (let* ((header (mime-entity-original-header entity))
+  (or entity
+      (setq entity mime-message-structure))
+  (let* ((header (mime-entity-original-header-internal entity))
 	 (field-body (cdr (assq field-name header))))
     (or field-body
 	(progn
-	  (if (save-excursion
-		(set-buffer (mime-entity-buffer entity))
-		(save-restriction
-		  (narrow-to-region (mime-entity-header-start entity)
-				    (mime-entity-header-end entity))
-		  (setq field-body
-			(std11-fetch-field (symbol-name field-name)))
-		  ))
-	      (mime-entity-set-original-header
+	  (if (setq field-body
+		    (mime-entity-send entity 'fetch-field
+				      (symbol-name field-name)))
+	      (mime-entity-set-original-header-internal
 	       entity (put-alist field-name field-body header))
 	    )
 	  field-body))))
 
-(defun mime-entity-read-field (entity field-name)
+(defalias 'mime-entity-content-type 'mime-entity-content-type-internal)
+
+(defun mime-entity-content-disposition (entity)
+  (or (mime-entity-content-disposition-internal entity)
+      (let ((ret (mime-fetch-field 'Content-Disposition entity)))
+	(if ret
+	    (let ((disposition (mime-parse-Content-Disposition ret)))
+	      (when disposition
+		(mime-entity-set-content-disposition-internal
+		 entity disposition)
+		disposition))))))
+
+(defun mime-entity-encoding (entity)
+  (or (mime-entity-encoding-internal entity)
+      (let ((ret (mime-fetch-field 'Content-Transfer-Encoding entity)))
+	(if ret
+	    (let ((encoding (mime-parse-Content-Transfer-Encoding ret)))
+	      (when encoding
+		(mime-entity-set-encoding-internal entity encoding)
+		encoding))))))
+
+(defun mime-read-field (field-name &optional entity)
   (or (symbolp field-name)
       (setq field-name (capitalize (capitalize field-name))))
+  (or entity
+      (setq entity mime-message-structure))
   (cond ((eq field-name 'Content-Type)
 	 (mime-entity-content-type entity)
 	 )
@@ -96,10 +239,10 @@ current-buffer, and return it.")
 	 (mime-entity-encoding entity)
 	 )
 	(t
-	 (let* ((header (mime-entity-parsed-header entity))
+	 (let* ((header (mime-entity-parsed-header-internal entity))
 		(field (cdr (assq field-name header))))
 	   (or field
-	       (let ((field-body (mime-entity-fetch-field entity field-name)))
+	       (let ((field-body (mime-fetch-field field-name entity)))
 		 (when field-body
 		   (cond ((memq field-name '(From Resent-From
 					     To Resent-To
@@ -109,7 +252,7 @@ current-buffer, and return it.")
 			  (setq field (std11-parse-addresses
 				       (eword-lexical-analyze field-body)))
 			  )
-			 ((eq field-name '(Sender Resent-Sender))
+			 ((memq field-name '(Sender Resent-Sender))
 			  (setq field (std11-parse-address
 				       (eword-lexical-analyze field-body)))
 			  )
@@ -122,20 +265,142 @@ current-buffer, and return it.")
 			  (setq field (eword-decode-unstructured-field-body
 				       field-body))
 			  ))
-		   (mime-entity-set-parsed-header
+		   (mime-entity-set-parsed-header-internal
 		    entity (put-alist field-name field header))
 		   field)))))))
 
+(defun eword-visible-field-p (field-name visible-fields invisible-fields)
+  (or (catch 'found
+	(while visible-fields
+	  (let ((regexp (car visible-fields)))
+	    (if (string-match regexp field-name)
+		(throw 'found t)
+	      ))
+	  (setq visible-fields (cdr visible-fields))
+	  ))
+      (catch 'found
+	(while invisible-fields
+	  (let ((regexp (car invisible-fields)))
+	    (if (string-match regexp field-name)
+		(throw 'found nil)
+	      ))
+	  (setq invisible-fields (cdr invisible-fields))
+	  )
+	t)))
+
+(defun mime-insert-decoded-header (entity
+				   &optional invisible-fields visible-fields
+				   code-conversion)
+  "Insert before point a decoded header of ENTITY."
+  (let ((default-charset
+	  (if code-conversion
+	      (if (mime-charset-to-coding-system code-conversion)
+		  code-conversion
+		default-mime-charset))))
+    (save-restriction
+      (narrow-to-region (point)(point))
+      (let ((the-buf (current-buffer))
+	    (src-buf (mime-entity-buffer entity))
+	    (h-end (mime-entity-header-end entity))
+	    beg p end field-name len field)
+	(save-excursion
+	  (set-buffer src-buf)
+	  (goto-char (mime-entity-header-start entity))
+	  (save-restriction
+	    (narrow-to-region (point) h-end)
+	    (while (re-search-forward std11-field-head-regexp nil t)
+	      (setq beg (match-beginning 0)
+		    p (match-end 0)
+		    field-name (buffer-substring beg (1- p))
+		    len (string-width field-name)
+		    end (std11-field-end))
+	      (when (eword-visible-field-p field-name
+					   visible-fields invisible-fields)
+		(setq field (intern (capitalize field-name)))
+		(save-excursion
+		  (set-buffer the-buf)
+		  (insert field-name)
+		  (insert ":")
+		  (cond ((memq field eword-decode-ignored-field-list)
+			 ;; Don't decode
+			 (insert-buffer-substring src-buf p end)
+			 )
+			((memq field eword-decode-structured-field-list)
+			 ;; Decode as structured field
+			 (let ((body (save-excursion
+				       (set-buffer src-buf)
+				       (buffer-substring p end)))
+			       (default-mime-charset default-charset))
+			   (insert (eword-decode-and-fold-structured-field
+				    body (1+ len)))
+			   ))
+			(t
+			 ;; Decode as unstructured field
+			 (let ((body (save-excursion
+				       (set-buffer src-buf)
+				       (buffer-substring p end)))
+			       (default-mime-charset default-charset))
+			   (insert (eword-decode-unstructured-field-body
+				    body (1+ len)))
+			   )))
+		  (insert "\n")
+		  )))))))))
+
+
+;;; @ Entity Attributes
+;;;
+
+(defun mime-entity-uu-filename (entity)
+  (if (member (mime-entity-encoding entity) mime-uuencode-encoding-name-list)
+      (save-excursion
+	(set-buffer (mime-entity-buffer entity))
+	(goto-char (mime-entity-body-start entity))
+	(if (re-search-forward "^begin [0-9]+ "
+			       (mime-entity-body-end entity) t)
+	    (if (looking-at ".+$")
+		(buffer-substring (match-beginning 0)(match-end 0))
+	      )))))
+
+(defun mime-entity-filename (entity)
+  "Return filename of ENTITY."
+  (or (mime-entity-uu-filename entity)
+      (mime-content-disposition-filename
+       (mime-entity-content-disposition entity))
+      (cdr (let ((param (mime-content-type-parameters
+			 (mime-entity-content-type entity))))
+	     (or (assoc "name" param)
+		 (assoc "x-name" param))
+	     ))))
+
+
+(defsubst mime-entity-media-type (entity)
+  (mime-content-type-primary-type (mime-entity-content-type entity)))
+(defsubst mime-entity-media-subtype (entity)
+  (mime-content-type-subtype (mime-entity-content-type entity)))
+(defsubst mime-entity-parameters (entity)
+  (mime-content-type-parameters (mime-entity-content-type entity)))
+(defsubst mime-entity-type/subtype (entity-info)
+  (mime-type/subtype-string (mime-entity-media-type entity-info)
+			    (mime-entity-media-subtype entity-info)))
+
+
+;;; @ Entity Content
+;;;
+
 (defun mime-entity-content (entity)
-  (save-excursion
-    (set-buffer (mime-entity-buffer entity))
-    (mime-decode-string (buffer-substring (mime-entity-body-start entity)
-					  (mime-entity-body-end entity))
-			(mime-entity-encoding entity))))
+  (mime-entity-send entity 'entity-content))
 
-(defsubst mime-root-entity-p (entity)
-  "Return t if ENTITY is root-entity (message)."
-  (null (mime-entity-node-id entity)))
+(defun mime-write-entity-content (entity filename)
+  "Write content of ENTITY into FILENAME."
+  (mime-entity-send entity 'write-entity-content filename))
+
+(defun mime-write-entity (entity filename)
+  "Write ENTITY into FILENAME."
+  (mime-entity-send entity 'write-entity filename))
+
+(defun mime-write-entity-body (entity filename)
+  "Write body of ENTITY into FILENAME."
+  (mime-entity-send entity 'write-entity-body filename))
 
 
 ;;; @ end