;;; mime.el --- MIME library module
-;; Copyright (C) 1998 Free Software Foundation, Inc.
+;; Copyright (C) 1998,1999,2000,2001,2003 Free Software Foundation, Inc.
-;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
+;; Author: MORIOKA Tomohiko <tomo@m17n.org>
;; Keywords: MIME, multimedia, mail, news
;; This file is part of FLIM (Faithful Library about Internet Message).
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs; see the file COPYING. If not, write to the
-;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
-;; Boston, MA 02111-1307, USA.
+;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+;; Boston, MA 02110-1301, USA.
;;; Code:
(require 'mime-def)
(require 'eword-decode)
-(autoload 'eword-encode-field "eword-encode"
- "Encode header field STRING, and return the result.")
-(autoload 'eword-encode-header "eword-encode"
- "Encode header fields to network representation, such as MIME encoded-word.")
+(eval-when-compile (require 'mmgeneric))
+
+(eval-and-compile
+(autoload 'mime-encode-header-in-buffer "eword-encode"
+ "Encode header fields to network representation, such as MIME encoded-word.")
(autoload 'mime-parse-Content-Type "mime-parse"
"Parse STRING as field-body of Content-Type field.")
"Read field-body of Content-Transfer-Encoding field from
current-buffer, and return it.")
-(autoload 'mime-parse-message "mime-parse"
- "Parse current-buffer as a MIME message.")
+(autoload 'mime-parse-msg-id "mime-parse"
+ "Parse TOKENS as msg-id of Content-Id or Message-Id field.")
+
+(autoload 'mime-uri-parse-cid "mime-parse"
+ "Parse STRING as cid URI.")
(autoload 'mime-parse-buffer "mime-parse"
"Parse BUFFER as a MIME message.")
+)
+
+(autoload 'mime-encode-field-body "eword-encode"
+ "Encode FIELD-BODY as FIELD-NAME, and return the result.")
+
+
+;;; @ Entity Representation and Implementation
+;;;
+
+(defmacro mime-entity-send (entity message &rest args)
+ `(luna-send ,entity ',(intern (format "mime-%s" (eval message))) ,@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."
+ (require (intern (format "mm%s" type)))
+ (luna-make-entity (mm-expand-class-name type) :location location))
+
+(luna-define-generic mime-entity-cooked-p (entity)
+ "Return non-nil if contents of ENTITY has been already code-converted.")
+
+
+;;; @ Entity as node of message
+;;;
+
+(defun mime-entity-children (entity)
+ "Return list of entities included in the ENTITY."
+ (or (mime-entity-children-internal entity)
+ (luna-send entity 'mime-entity-children entity)))
+
+(defun mime-entity-node-id (entity)
+ "Return node-id of ENTITY."
+ (mime-entity-node-id-internal entity))
+
+(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 message)
+ "Return entity from ENTITY-NUMBER in MESSAGE."
+ (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 message)
+ "Return entity from ENTITY-NODE-ID in MESSAGE."
+ (mime-find-entity-from-number (reverse entity-node-id) message))
+
+(defun mime-find-entity-from-content-id (cid message)
+ "Return entity from CID in MESSAGE."
+ (if (equal cid (mime-entity-read-field message "Content-Id"))
+ message
+ (let ((children (mime-entity-children message))
+ ret)
+ (while (and children
+ (null (setq ret (mime-find-entity-from-content-id
+ cid (car children)))))
+ (setq children (cdr children)))
+ ret)))
+
+(defun mime-entity-parent (entity &optional message)
+ "Return mother entity of ENTITY.
+If MESSAGE is specified, it is regarded as root entity."
+ (if (equal entity message)
+ nil
+ (mime-entity-parent-internal entity)))
+
+(defun mime-root-entity-p (entity &optional message)
+ "Return t if ENTITY is root-entity (message).
+If MESSAGE is specified, it is regarded as root entity."
+ (null (mime-entity-parent entity message)))
+
+(defun mime-find-root-entity (entity)
+ "Return root entity of ENTITY."
+ (while (not (mime-root-entity-p entity))
+ (setq entity (mime-entity-parent entity)))
+ entity)
+
+
+;;; @ Header buffer (obsolete)
+;;;
+
+;; (luna-define-generic mime-entity-header-buffer (entity))
+
+;; (luna-define-generic mime-goto-header-start-point (entity)
+;; "Set buffer and point to header-start-position of ENTITY.")
+
+;; (luna-define-generic mime-entity-header-start-point (entity)
+;; "Return header-start-position of ENTITY.")
+
+;; (luna-define-generic mime-entity-header-end-point (entity)
+;; "Return header-end-position of ENTITY.")
+
+;; (make-obsolete 'mime-entity-header-buffer "don't use it.")
+;; (make-obsolete 'mime-goto-header-start-point "don't use it.")
+;; (make-obsolete 'mime-entity-header-start-point "don't use it.")
+;; (make-obsolete 'mime-entity-header-end-point "don't use it.")
+
+
+;;; @ Body buffer (obsolete)
+;;;
+
+;; (luna-define-generic mime-entity-body-buffer (entity))
+
+;; (luna-define-generic mime-goto-body-start-point (entity)
+;; "Set buffer and point to body-start-position of ENTITY.")
+
+;; (luna-define-generic mime-goto-body-end-point (entity)
+;; "Set buffer and point to body-end-position of ENTITY.")
+
+;; (luna-define-generic mime-entity-body-start-point (entity)
+;; "Return body-start-position of ENTITY.")
+
+;; (luna-define-generic mime-entity-body-end-point (entity)
+;; "Return body-end-position of ENTITY.")
+
+;; (defalias 'mime-entity-body-start 'mime-entity-body-start-point)
+;; (defalias 'mime-entity-body-end 'mime-entity-body-end-point)
+
+;; (make-obsolete 'mime-entity-body-buffer "don't use it.")
+;; (make-obsolete 'mime-goto-body-start-point "don't use it.")
+;; (make-obsolete 'mime-goto-body-end-point "don't use it.")
+;; (make-obsolete 'mime-entity-body-start-point "don't use it.")
+;; (make-obsolete 'mime-entity-body-end-point "don't use it.")
+;; (make-obsolete 'mime-entity-body-start "don't use it.")
+;; (make-obsolete 'mime-entity-body-end "don't use it.")
+
+
+;;; @ Entity buffer (obsolete)
+;;;
+
+;; (luna-define-generic mime-entity-buffer (entity))
+;; (make-obsolete 'mime-entity-buffer "don't use it.")
+
+;; (luna-define-generic mime-entity-point-min (entity))
+;; (make-obsolete 'mime-entity-point-min "don't use it.")
+
+;; (luna-define-generic mime-entity-point-max (entity))
+;; (make-obsolete 'mime-entity-point-max "don't use it.")
+
-;;; @ MIME entity
+;;; @ Entity
;;;
-(defun mime-entity-fetch-field (entity field-name)
- (or (symbolp field-name)
- (setq field-name (intern (capitalize (capitalize field-name)))))
- (let* ((header (mime-entity-original-header 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
- entity (put-alist field-name field-body header))
- )
- field-body))))
+(luna-define-generic mime-insert-entity (entity)
+ "Insert header and body of ENTITY at point.")
+
+(luna-define-generic mime-write-entity (entity filename)
+ "Write header and body of ENTITY into FILENAME.")
+
+
+;;; @ Entity Body
+;;;
+
+(luna-define-generic mime-entity-body (entity)
+ "Return network representation of ENTITY body.")
+
+(luna-define-generic mime-insert-entity-body (entity)
+ "Insert network representation of ENTITY body at point.")
+
+(luna-define-generic mime-write-entity-body (entity filename)
+ "Write body of ENTITY into FILENAME.")
+
+
+;;; @ Entity Content
+;;;
+
+(luna-define-generic mime-entity-content (entity)
+ "Return content of ENTITY as byte sequence (string).")
+
+(luna-define-generic mime-insert-entity-content (entity)
+ "Insert content of ENTITY at point.")
+
+(luna-define-generic mime-write-entity-content (entity filename)
+ "Write content of ENTITY into FILENAME.")
+
+(luna-define-generic mime-insert-text-content (entity)
+ "Insert decoded text body of ENTITY.")
+
+
+;;; @ Header fields
+;;;
+
+(luna-define-generic mime-entity-fetch-field (entity field-name)
+ "Return the value of the ENTITY's header field whose type is FIELD-NAME.")
+
+;; (defun mime-fetch-field (field-name &optional entity)
+;; "Return the value of the ENTITY's header field whose type is FIELD-NAME."
+;; (if (symbolp field-name)
+;; (setq field-name (symbol-name field-name))
+;; )
+;; (or entity
+;; (setq entity mime-message-structure))
+;; (mime-entity-fetch-field entity field-name)
+;; )
+;; (make-obsolete 'mime-fetch-field 'mime-entity-fetch-field)
+
+(defun mime-entity-content-type (entity)
+ "Return content-type of ENTITY."
+ (or (mime-entity-content-type-internal entity)
+ (let ((ret (mime-entity-fetch-field entity "Content-Type")))
+ (if ret
+ (mime-entity-set-content-type-internal
+ entity (mime-parse-Content-Type ret))
+ ))))
+
+(defun mime-entity-content-disposition (entity)
+ "Return content-disposition of ENTITY."
+ (or (mime-entity-content-disposition-internal entity)
+ (let ((ret (mime-entity-fetch-field entity "Content-Disposition")))
+ (if ret
+ (mime-entity-set-content-disposition-internal
+ entity (mime-parse-Content-Disposition ret))
+ ))))
+
+(defun mime-entity-encoding (entity &optional default-encoding)
+ "Return content-transfer-encoding of ENTITY.
+If the ENTITY does not have Content-Transfer-Encoding field, this
+function returns DEFAULT-ENCODING. If it is nil, \"7bit\" is used as
+default value."
+ (or (mime-entity-encoding-internal entity)
+ (let ((ret (mime-entity-fetch-field entity "Content-Transfer-Encoding")))
+ (mime-entity-set-encoding-internal
+ entity
+ (or (and ret (mime-parse-Content-Transfer-Encoding ret))
+ default-encoding "7bit"))
+ )))
+
+(defvar mime-field-parser-alist
+ '((Return-Path . std11-parse-route-addr)
+
+ (Reply-To . std11-parse-addresses)
+
+ (Sender . std11-parse-mailbox)
+ (From . std11-parse-addresses)
+
+ (Resent-Reply-To . std11-parse-addresses)
+
+ (Resent-Sender . std11-parse-mailbox)
+ (Resent-From . std11-parse-addresses)
+
+ (To . std11-parse-addresses)
+ (Resent-To . std11-parse-addresses)
+ (Cc . std11-parse-addresses)
+ (Resent-Cc . std11-parse-addresses)
+ (Bcc . std11-parse-addresses)
+ (Resent-Bcc . std11-parse-addresses)
+
+ (Message-Id . mime-parse-msg-id)
+ (Recent-Message-Id . mime-parse-msg-id)
+
+ (In-Reply-To . std11-parse-msg-ids)
+ (References . std11-parse-msg-ids)
+
+ (Content-Id . mime-parse-msg-id)
+ ))
(defun mime-entity-read-field (entity field-name)
- (or (symbolp field-name)
- (setq field-name (capitalize (capitalize field-name))))
- (cond ((eq field-name 'Content-Type)
- (mime-entity-content-type entity)
- )
- ((eq field-name 'Content-Disposition)
- (mime-entity-content-disposition entity)
- )
- ((eq field-name 'Content-Transfer-Encoding)
- (mime-entity-encoding entity)
- )
- (t
- (let* ((header (mime-entity-parsed-header entity))
- (field (cdr (assq field-name header))))
- (or field
- (let ((field-body (mime-entity-fetch-field entity field-name)))
- (when field-body
- (cond ((memq field-name '(From Resent-From
- To Resent-To
- Cc Resent-Cc
- Bcc Resent-Bcc
- Reply-To Resent-Reply-To))
- (setq field (std11-parse-addresses
- (eword-lexical-analyze field-body)))
- )
- ((eq field-name '(Sender Resent-Sender))
- (setq field (std11-parse-address
- (eword-lexical-analyze field-body)))
- )
- ((memq field-name eword-decode-ignored-field-list)
- (setq field field-body))
- ((memq field-name eword-decode-structured-field-list)
- (setq field (eword-decode-structured-field-body
- field-body)))
- (t
- (setq field (eword-decode-unstructured-field-body
- field-body))
- ))
- (mime-entity-set-parsed-header
- entity (put-alist field-name field header))
- field)))))))
-
-(defun mime-entity-content (entity)
+ (let ((sym (if (symbolp field-name)
+ (prog1
+ field-name
+ (setq field-name (symbol-name field-name)))
+ (intern (capitalize field-name)))))
+ (cond ((eq sym 'Content-Type)
+ (mime-entity-content-type entity)
+ )
+ ((eq sym 'Content-Disposition)
+ (mime-entity-content-disposition entity)
+ )
+ ((eq sym 'Content-Transfer-Encoding)
+ (mime-entity-encoding entity)
+ )
+ (t
+ (let* ((header (mime-entity-parsed-header-internal entity))
+ (field (cdr (assq sym header))))
+ (or field
+ (let ((field-body (mime-entity-fetch-field entity field-name))
+ parser)
+ (when field-body
+ (setq parser
+ (cdr (assq sym mime-field-parser-alist)))
+ (setq field
+ (if parser
+ (funcall parser
+ (eword-lexical-analyze field-body))
+ (mime-decode-field-body field-body sym 'plain)
+ ))
+ (mime-entity-set-parsed-header-internal
+ entity (put-alist sym field header))
+ field))))))))
+
+;; (defun mime-read-field (field-name &optional entity)
+;; (or entity
+;; (setq entity mime-message-structure))
+;; (mime-entity-read-field entity field-name)
+;; )
+;; (make-obsolete 'mime-read-field 'mime-entity-read-field)
+
+(luna-define-generic mime-insert-header (entity &optional invisible-fields
+ visible-fields)
+ "Insert before point a decoded header of ENTITY.")
+
+
+;;; @ Entity Attributes
+;;;
+
+(luna-define-generic mime-entity-name (entity)
+ "Return name of the ENTITY.")
+
+(defun mime-entity-uu-filename (entity)
+ (if (member (mime-entity-encoding entity) mime-uuencode-encoding-name-list)
+ (with-temp-buffer
+ (mime-insert-entity-body entity)
+ (if (re-search-forward "^begin [0-9]+ " nil t)
+ (if (looking-at ".+$")
+ (buffer-substring (match-beginning 0)(match-end 0))
+ )))))
+
+;; unlimited patch by simm-emacs@fan.gr.jp
+;; Mon, 10 Jan 2000 12:59:46 +0900
+(defun mime-entity-filename (entity)
+ "Return filename of ENTITY."
+ (let ((filename
+ (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))))
+ "")))
+ (or (and mime-decode-unlimited
+ (string-match "\033" filename)
+ (decode-mime-charset-string filename 'iso-2022-jp 'CRLF))
+ (eword-decode-string filename))))
+
+
+(defsubst mime-entity-media-type (entity)
+ "Return primary media-type of ENTITY."
+ (mime-content-type-primary-type (mime-entity-content-type entity)))
+
+(defsubst mime-entity-media-subtype (entity)
+ "Return media-subtype of ENTITY."
+ (mime-content-type-subtype (mime-entity-content-type entity)))
+
+(defsubst mime-entity-parameters (entity)
+ "Return parameters of Content-Type of ENTITY."
+ (mime-content-type-parameters (mime-entity-content-type entity)))
+
+(defsubst mime-entity-type/subtype (entity-info)
+ "Return type/subtype of Content-Type of ENTITY."
+ (mime-type/subtype-string (mime-entity-media-type entity-info)
+ (mime-entity-media-subtype entity-info)))
+
+(defun mime-entity-set-content-type (entity content-type)
+ "Set ENTITY's content-type to CONTENT-TYPE."
+ (mime-entity-set-content-type-internal entity content-type))
+
+(defun mime-entity-set-encoding (entity encoding)
+ "Set ENTITY's content-transfer-encoding to ENCODING."
+ (mime-entity-set-encoding-internal entity encoding))
+
+
+;;; @ unlimited patch
+;;;
+
+;; unlimited patch by simm-emacs@fan.gr.jp (code derives from irchat-pj)
+;; Tue, 01 Feb 2000 01:42:05 +0900
+(defun mime-detect-coding-system-region-unlimited (beg end)
+ "Detect coding system on region."
+ (let (ch esc prev flag)
+ (save-excursion
+ (catch 'detect
+ ;; check ISO-2022-JP / ascii
+ (catch 'quit
+ (goto-char beg)
+ (while (< (point) end)
+ (setq ch (following-char))
+ (and (<= 256 ch)
+ (throw 'detect nil)) ;;'noconv))
+ (and (<= 128 ch)
+ (throw 'quit t))
+ (and (= 27 ch)
+ (setq esc t))
+ (forward-char 1))
+ (throw 'detect (if esc 'iso-2022-jp nil))) ;;'noconv)))
+ ;; check EUC-JP / SHIFT-JIS
+ (if esc (throw 'detect 'iso-2022-jp))
+ (while (< (point) end)
+ (setq ch (following-char))
+ (or (and (= 27 ch) ;; ESC
+ (throw 'detect 'iso-2022-jp))
+ (and (<= 128 ch) (<= ch 141) ;; 0x80 <= ch <= 0x8d
+ (throw 'detect 'shift_jis))
+ (and (<= 144 ch) (<= ch 159) ;; 0x90 <= ch <= 0x9f
+ (throw 'detect 'shift_jis))
+ (and (eq 'shift_jis prev) (<= ch 127) ;; second byte MSB == 0
+ (throw 'detect 'shift_jis))
+ (and (eq 'euc-jp prev)
+ (<= 161 ch) (<= ch 243) ;; second byte of EUC Kana
+ (setq prev nil
+ flag 'euc-jp))
+ (and (eq nil prev)
+ (or (= 164 ch) (= 165 ch)) ;; first byte of EUC kana
+ (setq prev 'euc-jp))
+ (< ch 160) ;; ch <= 0xa0
+ (and (eq 'euc-jp prev)
+ (throw 'detect 'euc-jp))
+ (setq prev (if prev nil 'shift_jis)
+ flag (if (eq 'euc-jp flag) 'euc-jp 'shift_jis)))
+ (forward-char 1))
+ flag))))
+ ;;(or flag 'noconv)))))
+
+;; unlimited patch by simm-emacs@fan.gr.jp
+;; Tue, 01 Feb 2000 01:56:38 +0900
+(defun mime-detect-coding-system-string-unlimited (str)
+ "Detect coding system on string."
(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))))
+ (set-buffer (get-buffer-create " *Temporary unlimited*"))
+ (insert str)
+ (unwind-protect
+ (mime-detect-coding-system-region-unlimited (point-min) (point-max))
+ (kill-buffer nil))))
+
+;; unlimited patch by simm-emacs@fan.gr.jp
+;; Tue, 01 Feb 2000 13:32:14 +0900
+(defsubst insert-unlimited (str)
+ "Insert with no-conversion.
+On GNU Emacs 20.*, (insert str) after (set-buffer-multibyte nil).
+Other environment, perform (insert str)."
+ (static-if (boundp 'nonascii-translation-table-unlimited)
+ (let ((nonascii-translation-table nonascii-translation-table-unlimited))
+ (insert str))
+ (insert str)))
-(defsubst mime-root-entity-p (entity)
- "Return t if ENTITY is root-entity (message)."
- (null (mime-entity-node-id entity)))
+(defun decode-mime-charset-string-dist-unlimited (str charset &optional lbt)
+ "Detect coding system on string."
+ (if (not (eq 'auto-detect charset))
+ (decode-mime-charset-string str charset lbt)
+ (save-excursion
+ (set-buffer (get-buffer-create " *Temporary unlimited*"))
+ (unwind-protect
+ (let (code)
+ (insert-unlimited str)
+ (setq code (mime-detect-coding-system-region-unlimited (point-min) (point-max)))
+ (cond ((eq code 'euc-jp)
+ (message "EUC-JP code detected, so convert this message."))
+ ((eq code 'shift_jis)
+ (message "SHIFT-JIS code detected, so convert this message.")))
+ (decode-mime-charset-region (point-min) (point-max)
+ (or code default-mime-charset)
+ lbt)
+ (buffer-substring (point-min) (point-max)))
+ (kill-buffer nil)))))
+(defun decode-mime-charset-string-unlimited (str charset &optional lbt)
+ "Detect coding system on string."
+ (cond ((eq 'auto-detect charset)
+ (save-excursion
+ (set-buffer (get-buffer-create " *Temporary unlimited*"))
+ (unwind-protect
+ (let (code)
+ (insert-unlimited str)
+ (setq code
+ (mime-detect-coding-system-region-unlimited (point-min) (point-max)))
+ (cond ((eq code 'euc-jp)
+ (message "EUC-JP code detected, so convert this message."))
+ ((eq code 'shift_jis)
+ (message "SHIFT-JIS code detected, so convert this message.")))
+ (decode-mime-charset-region (point-min) (point-max)
+ (or code default-mime-charset)
+ lbt)
+ (buffer-substring (point-min) (point-max)))
+ (kill-buffer nil))))
+ ((string= "us-ascii" charset)
+ (save-excursion
+ (set-buffer (get-buffer-create " *Temporary unlimited*"))
+ (unwind-protect
+ (let ((code 'us-ascii))
+ (insert-unlimited str)
+ (goto-char (point-min))
+ (while (not (eobp))
+ (if (and (<= 32 (following-char)) (< (following-char) 128))
+ (forward-char 1)
+ (setq code nil)
+ (goto-char (point-max))))
+ (cond ((eq code 'us-ascii)
+ (decode-mime-charset-region (point-min) (point-max) nil lbt))
+ (code
+ (decode-mime-charset-region (point-min) (point-max) code lbt))
+ (t
+ (setq code
+ (mime-detect-coding-system-region-unlimited
+ (point-min) (point-max)))
+ (when code
+ (message "Declared US-ASCII but detected %s, so convert."
+ (if (eq code 'shift_jis) "SHIFT-JIS"
+ (upcase (prin1-to-string code))))
+ (decode-mime-charset-region (point-min) (point-max)
+ (or code default-mime-charset)
+ lbt))))
+ (buffer-substring (point-min) (point-max)))
+ (kill-buffer nil))))
+ (t
+ (decode-mime-charset-string str charset lbt))))
;;; @ end
;;;
projects / elisp / flim.git / blobdiff