--- /dev/null
+;;; mime-def.el --- definition module for SEMI
+
+;; Copyright (C) 1995,1996,1997 Free Software Foundation, Inc.
+
+;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
+;; Version: $Id: mime-def.el,v 0.0 1997-02-24 01:43:06 morioka Exp $
+;; Keywords: definition, MIME, multimedia, mail, news
+
+;; This file is part of SEMI (SEMI is Emacs MIME Interfaces).
+
+;; This program is free software; you can redistribute it and/or
+;; modify it under the terms of the GNU General Public License as
+;; published by the Free Software Foundation; either version 2, or (at
+;; your option) any later version.
+
+;; This program is distributed in the hope that it will be useful, but
+;; WITHOUT ANY WARRANTY; without even the implied warranty of
+;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+;; General Public License for more details.
+
+;; 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.
+
+;;; Code:
+
+(require 'emu)
+
+
+;;; @ variables
+;;;
+
+(defvar mime/tmp-dir (or (getenv "TM_TMP_DIR") "/tmp/"))
+
+(defvar mime/use-multi-frame
+ (and (>= emacs-major-version 19) window-system))
+
+(defvar mime/find-file-function
+ (if mime/use-multi-frame
+ (function find-file-other-frame)
+ (function find-file)
+ ))
+
+(defvar mime/output-buffer-window-is-shared-with-bbdb t
+ "*If t, mime/output-buffer window is shared with BBDB window.")
+
+
+;;; @ constants
+;;;
+
+(defconst mime/output-buffer-name "*MIME-out*")
+(defconst mime/temp-buffer-name " *MIME-temp*")
+
+
+;;; @ charset and encoding
+;;;
+
+(defvar mime-charset-type-list
+ '((us-ascii 7 nil)
+ (iso-8859-1 8 "quoted-printable")
+ (iso-8859-2 8 "quoted-printable")
+ (iso-8859-3 8 "quoted-printable")
+ (iso-8859-4 8 "quoted-printable")
+ (iso-8859-5 8 "quoted-printable")
+ (koi8-r 8 "quoted-printable")
+ (iso-8859-7 8 "quoted-printable")
+ (iso-8859-8 8 "quoted-printable")
+ (iso-8859-9 8 "quoted-printable")
+ (iso-2022-jp 7 "base64")
+ (iso-2022-kr 7 "base64")
+ (euc-kr 8 "base64")
+ (gb2312 8 "quoted-printable")
+ (big5 8 "base64")
+ (iso-2022-jp-2 7 "base64")
+ (iso-2022-int-1 7 "base64")
+ ))
+
+(defun mime/encoding-name (transfer-level &optional not-omit)
+ (cond ((> transfer-level 8) "binary")
+ ((= transfer-level 8) "8bit")
+ (not-omit "7bit")
+ ))
+
+(defun mime/make-charset-default-encoding-alist (transfer-level)
+ (mapcar (function
+ (lambda (charset-type)
+ (let ((charset (upcase (symbol-name (car charset-type))))
+ (type (nth 1 charset-type))
+ (encoding (nth 2 charset-type))
+ )
+ (if (<= type transfer-level)
+ (cons charset (mime/encoding-name type))
+ (cons charset encoding)
+ ))))
+ mime-charset-type-list))
+
+
+;;; @ button
+;;;
+
+(defun tm:set-face-region (b e face)
+ (let ((overlay (tl:make-overlay b e)))
+ (tl:overlay-put overlay 'face face)
+ ))
+
+(defvar tm:button-face 'bold
+ "Face used for content-button or URL-button of MIME-Preview buffer.
+\[mime-def.el]")
+
+(defvar tm:mouse-face 'highlight
+ "Face used for MIME-preview buffer mouse highlighting. [mime-def.el]")
+
+(defvar tm:warning-face nil
+ "Face used for invalid encoded-word.")
+
+(defun tm:add-button (from to func &optional data)
+ "Create a button between FROM and TO with callback FUNC and data DATA."
+ (and tm:button-face
+ (tl:overlay-put (tl:make-overlay from to) 'face tm:button-face))
+ (tl:add-text-properties from to
+ (append (and tm:mouse-face
+ (list 'mouse-face tm:mouse-face))
+ (list 'mime-callback func)
+ (and data (list 'mime-data data))
+ ))
+ )
+
+(defvar tm:mother-button-dispatcher nil)
+
+(defun tm:button-dispatcher (event)
+ "Select the button under point."
+ (interactive "e")
+ (let (buf point func data)
+ (save-window-excursion
+ (mouse-set-point event)
+ (setq buf (current-buffer)
+ point (point)
+ func (get-text-property (point) 'mime-callback)
+ data (get-text-property (point) 'mime-data)
+ )
+ )
+ (save-excursion
+ (set-buffer buf)
+ (goto-char point)
+ (if func
+ (apply func data)
+ (if (fboundp tm:mother-button-dispatcher)
+ (funcall tm:mother-button-dispatcher event)
+ )
+ ))))
+
+
+;;; @ for URL
+;;;
+
+(defvar tm:URL-regexp
+ "\\(http\\|ftp\\|file\\|gopher\\|news\\|telnet\\|wais\\|mailto\\):\\(//[-a-zA-Z0-9_.]+:[0-9]*\\)?[-a-zA-Z0-9_=?#$@~`%&*+|\\/.,]*[-a-zA-Z0-9_=#$@~`%&*+|\\/]")
+
+(defvar browse-url-browser-function nil)
+
+(defun tm:browse-url (&optional url)
+ (if (fboundp browse-url-browser-function)
+ (if url
+ (funcall browse-url-browser-function url)
+ (call-interactively browse-url-browser-function))
+ (if (fboundp tm:mother-button-dispatcher)
+ (call-interactively tm:mother-button-dispatcher)
+ )
+ ))
+
+
+;;; @ PGP
+;;;
+
+(defvar pgp-function-alist
+ '(
+ ;; for mime-pgp
+ (verify mc-verify "mc-toplev")
+ (decrypt mc-decrypt "mc-toplev")
+ (fetch-key mc-pgp-fetch-key "mc-pgp")
+ (snarf-keys mc-snarf-keys "mc-toplev")
+ ;; for mime-edit
+ (mime-sign tm:mc-pgp-sign-region "mime-edit-mc")
+ (traditional-sign mc-pgp-sign-region "mc-pgp")
+ (encrypt tm:mc-pgp-encrypt-region "mime-edit-mc")
+ (insert-key mc-insert-public-key "mc-toplev")
+ )
+ "Alist of service names vs. corresponding functions and its filenames.
+Each element looks like (SERVICE FUNCTION FILE).
+
+SERVICE is a symbol of PGP processing. It allows `verify', `decrypt',
+`fetch-key', `snarf-keys', `mime-sign', `traditional-sign', `encrypt'
+or `insert-key'.
+
+Function is a symbol of function to do specified SERVICE.
+
+FILE is string of filename which has definition of corresponding
+FUNCTION.")
+
+(defmacro pgp-function (method)
+ "Return function to do service METHOD."
+ (` (car (cdr (assq (, method) (symbol-value 'pgp-function-alist)))))
+ )
+
+(mapcar (function
+ (lambda (method)
+ (autoload (second method)(third method))
+ ))
+ pgp-function-alist)
+
+
+;;; @ definitions about MIME
+;;;
+
+(defconst mime/tspecials "][\000-\040()<>@,\;:\\\"/?.=")
+(defconst mime/token-regexp (concat "[^" mime/tspecials "]+"))
+(defconst mime/charset-regexp mime/token-regexp)
+
+(defconst mime/content-type-subtype-regexp
+ (concat mime/token-regexp "/" mime/token-regexp))
+
+(defconst mime/disposition-type-regexp mime/token-regexp)
+
+
+;;; @@ Base64
+;;;
+
+(defconst base64-token-regexp "[A-Za-z0-9+/]")
+(defconst base64-token-padding-regexp "[A-Za-z0-9+/=]")
+
+(defconst mime/B-encoded-text-regexp
+ (concat "\\(\\("
+ base64-token-regexp
+ base64-token-regexp
+ base64-token-regexp
+ base64-token-regexp
+ "\\)*"
+ base64-token-regexp
+ base64-token-regexp
+ base64-token-padding-regexp
+ base64-token-padding-regexp
+ "\\)"))
+
+(defconst mime/B-encoding-and-encoded-text-regexp
+ (concat "\\(B\\)\\?" mime/B-encoded-text-regexp))
+
+
+;;; @@ Quoted-Printable
+;;;
+
+(defconst quoted-printable-hex-chars "0123456789ABCDEF")
+(defconst quoted-printable-octet-regexp
+ (concat "=[" quoted-printable-hex-chars
+ "][" quoted-printable-hex-chars "]"))
+
+(defconst mime/Q-encoded-text-regexp
+ (concat "\\([^=?]\\|" quoted-printable-octet-regexp "\\)+"))
+(defconst mime/Q-encoding-and-encoded-text-regexp
+ (concat "\\(Q\\)\\?" mime/Q-encoded-text-regexp))
+
+
+;;; @ rot13-47
+;;;
+;; caesar-region written by phr@prep.ai.mit.edu Nov 86
+;; modified by tower@prep Nov 86
+;; gnus-caesar-region
+;; Modified by umerin@flab.flab.Fujitsu.JUNET for ROT47.
+(defun tm:caesar-region (&optional n)
+ "Caesar rotation of region by N, default 13, for decrypting netnews.
+ROT47 will be performed for Japanese text in any case."
+ (interactive (if current-prefix-arg ; Was there a prefix arg?
+ (list (prefix-numeric-value current-prefix-arg))
+ (list nil)))
+ (cond ((not (numberp n)) (setq n 13))
+ (t (setq n (mod n 26)))) ;canonicalize N
+ (if (not (zerop n)) ; no action needed for a rot of 0
+ (progn
+ (if (or (not (boundp 'caesar-translate-table))
+ (/= (aref caesar-translate-table ?a) (+ ?a n)))
+ (let ((i 0) (lower "abcdefghijklmnopqrstuvwxyz") upper)
+ (message "Building caesar-translate-table...")
+ (setq caesar-translate-table (make-vector 256 0))
+ (while (< i 256)
+ (aset caesar-translate-table i i)
+ (setq i (1+ i)))
+ (setq lower (concat lower lower) upper (upcase lower) i 0)
+ (while (< i 26)
+ (aset caesar-translate-table (+ ?a i) (aref lower (+ i n)))
+ (aset caesar-translate-table (+ ?A i) (aref upper (+ i n)))
+ (setq i (1+ i)))
+ ;; ROT47 for Japanese text.
+ ;; Thanks to ichikawa@flab.fujitsu.junet.
+ (setq i 161)
+ (let ((t1 (logior ?O 128))
+ (t2 (logior ?! 128))
+ (t3 (logior ?~ 128)))
+ (while (< i 256)
+ (aset caesar-translate-table i
+ (let ((v (aref caesar-translate-table i)))
+ (if (<= v t1) (if (< v t2) v (+ v 47))
+ (if (<= v t3) (- v 47) v))))
+ (setq i (1+ i))))
+ (message "Building caesar-translate-table...done")))
+ (let ((from (region-beginning))
+ (to (region-end))
+ (i 0) str len)
+ (setq str (buffer-substring from to))
+ (setq len (length str))
+ (while (< i len)
+ (aset str i (aref caesar-translate-table (aref str i)))
+ (setq i (1+ i)))
+ (goto-char from)
+ (delete-region from to)
+ (insert str)))))
+
+
+;;; @ field
+;;;
+
+(defun tm:set-fields (sym field-list &optional regexp-sym)
+ (or regexp-sym
+ (setq regexp-sym
+ (let ((name (symbol-name sym)))
+ (intern
+ (concat (if (string-match "\\(.*\\)-list" name)
+ (substring name 0 (match-end 1))
+ name)
+ "-regexp")
+ )))
+ )
+ (set sym field-list)
+ (set regexp-sym
+ (concat "^" (apply (function regexp-or) field-list) ":"))
+ )
+
+(defun tm:add-fields (sym field-list &optional regexp-sym)
+ (or regexp-sym
+ (setq regexp-sym
+ (let ((name (symbol-name sym)))
+ (intern
+ (concat (if (string-match "\\(.*\\)-list" name)
+ (substring name 0 (match-end 1))
+ name)
+ "-regexp")
+ )))
+ )
+ (let ((fields (eval sym)))
+ (mapcar (function
+ (lambda (field)
+ (or (member field fields)
+ (setq fields (cons field fields))
+ )
+ ))
+ (reverse field-list)
+ )
+ (set regexp-sym
+ (concat "^" (apply (function regexp-or) fields) ":"))
+ (set sym fields)
+ ))
+
+(defun tm:delete-fields (sym field-list &optional regexp-sym)
+ (or regexp-sym
+ (setq regexp-sym
+ (let ((name (symbol-name sym)))
+ (intern
+ (concat (if (string-match "\\(.*\\)-list" name)
+ (substring name 0 (match-end 1))
+ name)
+ "-regexp")
+ )))
+ )
+ (let ((fields (eval sym)))
+ (mapcar (function
+ (lambda (field)
+ (setq fields (delete field fields))
+ ))
+ field-list)
+ (set regexp-sym
+ (concat "^" (apply (function regexp-or) fields) ":"))
+ (set sym fields)
+ ))
+
+
+;;; @ end
+;;;
+
+(provide 'mime-def)
+
+;;; mime-def.el ends here
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