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+;;; mime-text.el --- mime-view content filter for text
+
+;; Copyright (C) 1994,1995,1996,1997 Free Software Foundation, Inc.
+
+;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
+;; Version:
+;;     $Id: mime-text.el,v 0.1 1997-02-21 04:16:04 tmorioka Exp $
+;; Keywords: text, MIME, multimedia, mail, news
+
+;; This file is part of tm (Tools for MIME).
+
+;; 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:
+
+;;; @ code conversion
+;;;
+
+(defvar mime-view-code-converter-alist
+  '((mime/show-message-mode      . mime-charset/decode-buffer)
+    (mime/temporary-message-mode . mime-charset/decode-buffer)
+    (t                          . mime-charset/maybe-decode-buffer)
+    ))
+
+(defun mime-charset/decode-buffer (charset &optional encoding)
+  (decode-mime-charset-region (point-min)(point-max)
+                             (or charset default-mime-charset))
+  )
+
+(defun mime-charset/maybe-decode-buffer (charset &optional encoding)
+  (or (member encoding '(nil "7bit" "8bit" "binary"))
+      (mime-charset/decode-buffer charset)
+      ))
+
+(defun mime-preview/decode-text-buffer (charset encoding)
+  (mime-decode-region (point-min) (point-max) encoding)
+  (let* ((mode mime::preview/original-major-mode)
+        (m (or (save-excursion
+                 (set-buffer mime::preview/article-buffer)
+                 mime::article/code-converter)
+               (cdr (or (assq mode mime-view-code-converter-alist)
+                        (assq t mime-view-code-converter-alist)))
+               ))
+        )
+    (and (functionp m)
+        (funcall m charset encoding)
+        )))
+
+
+;;; @ content filters for tm-view
+;;;
+
+(defun mime-preview/filter-for-text/plain (ctype params encoding)
+  (mime-preview/decode-text-buffer (cdr (assoc "charset" params)) encoding)
+  (goto-char (point-max))
+  (if (not (eq (char-after (1- (point))) ?\n))
+      (insert "\n")
+    )
+  (if browse-url-browser-function
+      (progn
+       (goto-char (point-min))
+       (while (re-search-forward tm:URL-regexp nil t)
+         (let ((beg (match-beginning 0))
+               (end (match-end 0)))
+           (tm:add-button beg end
+                          (function tm:browse-url)
+                          (list (buffer-substring beg end))))
+         )))
+  (run-hooks 'mime-view-plain-text-preview-hook)
+  )
+
+(defun mime-preview/filter-for-text/richtext (ctype params encoding)
+  (let* ((mode mime::preview/original-major-mode)
+        (m (assq mode mime-view-code-converter-alist))
+        (charset (cdr (assoc "charset" params)))
+        (beg (point-min))
+        )
+    (remove-text-properties beg (point-max) '(face nil))
+    (mime-preview/decode-text-buffer charset encoding)
+    (richtext-decode beg (point-max))
+    ))
+
+(defun mime-preview/filter-for-text/enriched (ctype params encoding)
+  (let* ((mode mime::preview/original-major-mode)
+        (m (assq mode mime-view-code-converter-alist))
+        (charset (cdr (assoc "charset" params)))
+        (beg (point-min))
+        )
+    (remove-text-properties beg (point-max) '(face nil))
+    (mime-preview/decode-text-buffer charset encoding)
+    (enriched-decode beg (point-max))
+    ))
+
+
+;;; @ end
+;;;
+
+(provide 'mime-text)
+
+;;; mime-text.el ends here