;;;
;;; $Id: tm-rich.el,v 2.2 1994/10/31 07:44:51 morioka Exp $
;;;
;;;          by MORIOKA Tomohiko  <morioka@jaist.ac.jp>
;;; modified by YAMATE Keiichirou <ics9118@sem1.info.osaka-cu.ac.jp>
;;;

(provide 'tm-enriched)

(require 'tm-view)

(defvar mime/text/enriched-face-list
  '("bold" "italic" "fixed" "underline"))

(cond ((and (>= (string-to-int emacs-version) 19) window-system)
       (require 'hilit19)
       (defun mime/set-face-region (b e face)
	 (let ((sym (intern face)))
	   (if (eq sym 'italic)
	       (setq sym 'modeline)
	     )
	   (if (member sym (face-list))
	       (progn
		 (hilit-unhighlight-region b e)
		 (hilit-region-set-face b e sym)
		 ))))
       )
      ((and (boundp 'NEMACS) NEMACS)
       (setq mime/text/enriched-face-list
	     '("bold" "italic" "underline"))
       (setq mime/text/enriched-face-attribute-alist
	     '(("bold"      . inversed-region)
	       ("italic"    . underlined-region)
	       ("underline" . underlined-region)
	       ))
       (defun mime/set-face-region (beg end sym)
	 (attribute-add-narrow-attribute
	  (cdr (assoc sym mime/text/enriched-face-attribute-alist))
	  beg end))
       )
      (t
       (setq mime/text/enriched-face-list
	     nil)
       (defun mime/set-face-region (beg end sym)
	 )
       ))

(defun mime/decode-text/enriched-region (beg end)
  (interactive "*r")
  (save-excursion
    (save-restriction
      (narrow-to-region beg end)
      (while (re-search-forward "[\n]+" nil t)
	(let ((str (buffer-substring (match-beginning 0)
				     (match-end 0))))
	  (if (string= str "\n")
	      (replace-match " ")
	    (replace-match (substring str 1))
	    )))
      (goto-char beg)
      (let (cmd str (fb (point)) fe b e)
	(while (re-search-forward "<\\(<\\|[^<>\n\r \t]+>\\)" nil t)
	  (setq b (match-beginning 0))
	  (setq cmd (buffer-substring b (match-end 0)))
	  (if (string= cmd "<<")
	      (replace-match "<")
	    (replace-match "")
	    (setq cmd (downcase (substring cmd 1 (- (length cmd) 1))))
	    )
	  (cond ((string= cmd "param")
		 (setq b (point))
		 (save-excursion
		   (save-restriction
		     (if (search-forward "</param>" nil t)
			 (progn
			   (replace-match "")
			   (setq e (point))
			   )
		       (setq e end)
		       )))
		 (delete-region b e)
		 )
		((member cmd mime/text/enriched-face-list)
		 (setq b (point))
		 (save-excursion
		   (save-restriction
		     (if (re-search-forward (concat "</" cmd ">") nil t)
			 (progn
			   (replace-match "")
			   (setq e (point))
			   )
		       (setq e end)
		       )))
		 (mime/set-face-region b e cmd)
		 )))
	(goto-char (point-max))
	(if (not (eq (preceding-char) ?\n))
	    (insert "\n")
	  )
	))))

(defun mime/decode-text/enriched (&optional ctl)
  (interactive)
  (save-excursion
    (save-restriction
      (let ((beg (point-min)) (end (point-max)))
	(goto-char (point-min))
	(if (search-forward "\n\n" nil t)
	    (setq beg (match-end 0))
	  )
	(mime/decode-text/enriched-region beg end)
	))))


(set-alist 'mime/content-filter-alist
	   "text/enriched" (function mime/decode-text/enriched))

(set-alist 'mime/content-filter-alist
	   "text/richtext" (function mime/decode-text/enriched))