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+;;; semi-def.el --- definition module for SEMI
+
+;; Copyright (C) 1995,1996,1997,1998 Free Software Foundation, Inc.
+
+;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
+;; Keywords: definition, MIME, multimedia, mail, news
+
+;; This file is part of SEMI (Sample of Emacs MIME Implementation).
+
+;; 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 'poe)
+
+(eval-when-compile (require 'cl))
+
+(require 'custom)
+
+(defconst mime-user-interface-product ["SEMI" (1 12 1) "[JR] Nonoichi"]
+  "Product name, version number and code name of MIME-kernel package.")
+
+(autoload 'mule-caesar-region "mule-caesar"
+  "Caesar rotation of current region." t)
+
+
+;;; @ constants
+;;;
+
+(defconst mime-echo-buffer-name "*MIME-echo*"
+  "Name of buffer to display MIME-playing information.")
+
+(defconst mime-temp-buffer-name " *MIME-temp*")
+
+
+;;; @ button
+;;;
+
+(defcustom mime-button-face 'bold
+  "Face used for content-button or URL-button of MIME-Preview buffer."
+  :group 'mime
+  :type 'face)
+
+(defcustom mime-button-mouse-face 'highlight
+  "Face used for MIME-preview buffer mouse highlighting."
+  :group 'mime
+  :type 'face)
+
+(defsubst mime-add-button (from to function &optional data)
+  "Create a button between FROM and TO with callback FUNCTION and DATA."
+  (let ((overlay (make-overlay from to)))
+    (and mime-button-face
+	 (overlay-put overlay 'face mime-button-face))
+    (and mime-button-mouse-face
+	 (overlay-put overlay 'mouse-face mime-button-mouse-face))
+    (add-text-properties from to (list 'mime-button-callback function))
+    (and data
+	 (add-text-properties from to (list 'mime-button-data data)))
+    ))
+
+(defsubst mime-insert-button (string function &optional data)
+  "Insert STRING as button with callback FUNCTION and DATA."
+  (save-restriction
+    (narrow-to-region (point)(point))
+    (insert (concat "[" string "]\n"))
+    (mime-add-button (point-min)(point-max) function data)
+    ))
+
+(defvar mime-button-mother-dispatcher nil)
+
+(defun mime-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-button-callback)
+	    data (get-text-property (point) 'mime-button-data)
+	    ))
+    (save-excursion
+      (set-buffer buf)
+      (goto-char point)
+      (if func
+	  (apply func data)
+	(if (fboundp mime-button-mother-dispatcher)
+	    (funcall mime-button-mother-dispatcher event)
+	  )))))
+
+
+;;; @ for URL
+;;;
+
+(defcustom mime-browse-url-regexp
+  (concat "\\(http\\|ftp\\|file\\|gopher\\|news\\|telnet\\|wais\\|mailto\\):"
+	  "\\(//[-a-zA-Z0-9_.]+:[0-9]*\\)?"
+	  "[-a-zA-Z0-9_=?#$@~`%&*+|\\/.,]*[-a-zA-Z0-9_=#$@~`%&*+|\\/]")
+  "*Regexp to match URL in text body."
+  :group 'mime
+  :type 'regexp)
+
+(defcustom mime-browse-url-function (function browse-url)
+  "*Function to browse URL."
+  :group 'mime
+  :type 'function)
+
+(defsubst mime-add-url-buttons ()
+  "Add URL-buttons for text body."
+  (goto-char (point-min))
+  (while (re-search-forward mime-browse-url-regexp nil t)
+    (let ((beg (match-beginning 0))
+	  (end (match-end 0)))
+      (mime-add-button beg end mime-browse-url-function
+		       (list (buffer-substring beg end))))))
+
+
+;;; @ menu
+;;;
+
+(if window-system
+    (if (featurep 'xemacs)
+	(defun select-menu-alist (title menu-alist)
+	  (let (ret)
+	    (popup-menu
+	     (list* title
+		    "---"
+		    (mapcar (function
+			     (lambda (cell)
+			       (vector (car cell)
+				       `(progn
+					  (setq ret ',(cdr cell))
+					  (throw 'exit nil)
+					  )
+				       t)
+			       ))
+			    menu-alist)
+		    ))
+	    (recursive-edit)
+	    ret))
+      (defun select-menu-alist (title menu-alist)
+	(x-popup-menu
+	 (list '(1 1) (selected-window))
+	 (list title (cons title menu-alist))
+	 ))
+      )
+  (defun select-menu-alist (title menu-alist)
+    (cdr
+     (assoc (completing-read (concat title " : ") menu-alist)
+	    menu-alist)
+     ))
+  )
+
+
+;;; @ 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		mime-mc-pgp-sign-region		"mime-mc")
+    (traditional-sign	mc-pgp-sign-region		"mc-pgp")
+    (encrypt		mime-mc-pgp-encrypt-region	"mime-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."
+  `(cadr (assq ,method (symbol-value 'pgp-function-alist))))
+
+(mapcar (function
+	 (lambda (method)
+	   (autoload (cadr method)(nth 2 method))
+	   ))
+	pgp-function-alist)
+
+
+;;; @ Other Utility
+;;;
+
+(defvar mime-condition-type-alist
+  '((preview . mime-preview-condition)
+    (action . mime-acting-condition)))
+
+(defvar mime-condition-mode-alist
+  '((with-default . ctree-set-calist-with-default)
+    (t . ctree-set-calist-strictly)))
+
+(defun mime-add-condition (target-type condition &optional mode file)
+  "Add CONDITION to database specified by TARGET-TYPE.
+TARGET-TYPE must be 'preview or 'action.  
+If optional argument MODE is 'strict or nil (omitted), CONDITION is
+added strictly.
+If optional argument MODE is 'with-default, CONDITION is added with
+default rule.
+If optional argument FILE is specified, it is loaded when CONDITION is
+activate."
+  (let ((sym (cdr (assq target-type mime-condition-type-alist))))
+    (if sym
+	(let ((func (cdr (or (assq mode mime-condition-mode-alist)
+			     (assq t mime-condition-mode-alist)))))
+	  (if (fboundp func)
+	      (progn
+		(funcall func sym condition)
+		(if file
+		    (let ((method (cdr (assq 'method condition))))
+		      (autoload method file)
+		      ))
+		)
+	    (error "Function for mode `%s' is not found." mode)
+	    ))
+      (error "Variable for target-type `%s' is not found." target-type)
+      )))
+
+
+;;; @ end
+;;;
+
+(provide 'semi-def)
+
+;;; semi-def.el ends here