--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lisp/tm/tm-tar.el	Mon Aug 13 08:46:56 2007 +0200
@@ -0,0 +1,344 @@
+;;;
+;;; $Id: tm-tar.el,v 1.1.1.1 1996/12/18 03:55:32 steve Exp $
+;;;
+;;; tm-tar.el
+;;;
+;;; Internal viewer for
+;;;    - application/x-tar
+;;;    - application/x-gzip, type="tar"
+;;;    - aplication/octet-stream, type="tar"
+;;;    - aplication/octet-stream, type="tar+gzip"
+;;;
+;;; by Hiroshi Ueno <zodiac@ibm.net>
+;;;	modified by Tomohiko Morioka <morioka@jaist.ac.jp>
+;;;
+
+;;; @ required modules
+;;;
+
+(require 'emu)
+(require 'tm-view)
+
+;;; @ constants
+;;;
+
+(defconst tm-tar/list-buffer "*tm-tar/List*")
+(defconst tm-tar/view-buffer "*tm-tar/View*")
+(defconst tm-tar/file-search-regexp "[0-9]+\:[0-9\:]+[ ]+[0-9]+[ ]+")
+(defconst tm-tar/popup-menu-title "Action Menu")
+
+;;; @ variables
+;;;
+
+(defvar tm-tar/tar-program  "gtar")
+(defvar tm-tar/tar-decompress-arg '("-z"))
+(defvar tm-tar/gzip-program "gzip")
+(defvar tm-tar/mmencode-program "mmencode")
+(defvar tm-tar/uudecode-program "uudecode")
+
+(defvar tm-tar/popup-menu-items
+  '(("View File"         . tm-tar/view-file)
+    ("Key Help"          . tm-tar/helpful-message)
+    ("Quit tm-tar Mode"  . exit-recursive-edit)
+    ))
+
+(cond ((string-match "XEmacs\\|Lucid" emacs-version)
+       (defvar tm-tar/popup-menu
+	 (cons tm-tar/popup-menu-title
+		(mapcar (function
+			(lambda (item)
+			  (vector (car item)(cdr item) t)
+			  ))
+			 tm-tar/popup-menu-items)))
+
+       (defun tm-tar/mouse-button-2 (event)
+	   (popup-menu tm-tar/popup-menu)
+	   )
+       )
+      ((>= emacs-major-version 19)
+       (defun tm-tar/mouse-button-2 (event)
+	 (let ((menu
+		(cons tm-tar/popup-menu-title
+			(list (cons "Menu Items" tm-tar/popup-menu-items))
+			)))
+	   (let ((func (x-popup-menu event menu)))
+		 (if func
+		     (funcall func)
+		   ))
+	     ))
+       ))
+
+(defvar tm-tar/tar-mode-map nil)
+(if tm-tar/tar-mode-map
+      nil
+    (setq tm-tar/tar-mode-map (make-keymap))
+    (suppress-keymap tm-tar/tar-mode-map)
+    (define-key tm-tar/tar-mode-map "\C-c"    'exit-recursive-edit)
+    (define-key tm-tar/tar-mode-map "q"       'exit-recursive-edit)
+    (define-key tm-tar/tar-mode-map "n"       'tm-tar/next-line)
+    (define-key tm-tar/tar-mode-map " "       'tm-tar/next-line)
+    (define-key tm-tar/tar-mode-map "\C-m"    'tm-tar/next-line)
+    (define-key tm-tar/tar-mode-map "p"       'tm-tar/previous-line)
+    (define-key tm-tar/tar-mode-map "\177"    'tm-tar/previous-line)
+    (define-key tm-tar/tar-mode-map "\C-\M-m" 'tm-tar/previous-line)
+    (define-key tm-tar/tar-mode-map "v"       'tm-tar/view-file)
+    (define-key tm-tar/tar-mode-map "\C-h"    'Helper-help)
+    (define-key tm-tar/tar-mode-map "?"       'tm-tar/helpful-message)
+    (if mouse-button-2
+	(define-key tm-tar/tar-mode-map
+				  mouse-button-2 'tm:button-dispatcher)
+	)
+  )
+
+;;; @@ tm-tar mode functions
+;;;
+
+(defun tm-tar/tar-mode (&optional prev-buf)
+  "Major mode for listing the contents of a tar archive file."
+    (unwind-protect
+	(let ((buffer-read-only t)
+	      (mode-name "tm-tar")
+	      (mode-line-buffer-identification '("%17b"))
+	      )
+	    (goto-char (point-min))
+	    (tm-tar/move-to-filename)
+	    (catch 'tm-tar/tar-mode (tm-tar/command-loop))
+	 )
+	(if prev-buf
+	    (switch-to-buffer prev-buf)
+	 )
+     ))
+
+(defun tm-tar/command-loop ()
+    (let ((old-local-map (current-local-map))
+	  )
+	(unwind-protect
+	    (progn
+		(use-local-map tm-tar/tar-mode-map)
+		(tm-tar/helpful-message)
+		(recursive-edit)
+	     )
+	    (save-excursion
+		(use-local-map old-local-map)
+	     ))
+     ))
+
+(defun tm-tar/next-line ()
+    (interactive)
+    (next-line 1)
+    (tm-tar/move-to-filename)
+  )
+
+(defun tm-tar/previous-line ()
+    (interactive)
+    (previous-line 1)
+    (tm-tar/move-to-filename)
+  )
+
+(defun tm-tar/view-file ()
+    (interactive)
+    (let ((name (tm-tar/get-filename))
+	  )
+      (save-excursion
+	  (switch-to-buffer tm-tar/view-buffer)
+	  (setq buffer-read-only nil)
+	  (erase-buffer)
+	  (message "Reading a file from an archive. Please wait...")
+	  (apply 'call-process tm-tar/tar-program
+			 nil t nil (append tm-tar/view-args (list name)))
+	  (goto-char (point-min))
+       )
+	(view-buffer tm-tar/view-buffer)
+     ))
+
+(defun tm-tar/get-filename ()
+    (let (eol)
+	(save-excursion
+	    (end-of-line)
+	    (setq eol (point))
+	    (beginning-of-line)
+	    (save-excursion
+		(if (re-search-forward "^d" eol t)
+			 (error "Cannot view a directory"))
+	     )
+	    (if (re-search-forward tm-tar/file-search-regexp eol t)
+		     (progn (let ((beg (point))
+				  )
+				(skip-chars-forward "^ \n")
+				(buffer-substring beg (point))
+				))
+		     (error "No file on this line")
+	     ))
+     ))
+
+(defun tm-tar/move-to-filename ()
+    (let ((eol (progn (end-of-line) (point)))
+	  )
+	(beginning-of-line)
+	(re-search-forward tm-tar/file-search-regexp eol t)
+     ))
+
+(defun tm-tar/set-properties ()
+    (if mouse-button-2
+	(let ((beg (point-min))
+	      (end (point-max))
+	      )
+	    (goto-char beg)
+	    (save-excursion
+		(while (re-search-forward tm-tar/file-search-regexp end t)
+		    (tm:add-button (point)
+					   (progn
+						(end-of-line)
+						(point))
+					   'tm-tar/view-file)
+		 ))
+	 )))
+
+(defun tm-tar/helpful-message ()
+    (interactive)
+    (message "Type %s, %s, %s, %s, %s, %s."
+	(substitute-command-keys "\\[Helper-help] for help")
+	(substitute-command-keys "\\[tm-tar/helpful-message] for keys")
+	(substitute-command-keys "\\[tm-tar/next-line] to next")
+	(substitute-command-keys "\\[tm-tar/previous-line] to prev")
+	(substitute-command-keys "\\[tm-tar/view-file] to view")
+	(substitute-command-keys "\\[exit-recursive-edit] to quit")
+     ))
+
+(defun tm-tar/y-or-n-p (prompt)
+    (prog1
+	(y-or-n-p prompt)
+	(message "")
+     ))
+
+;;; @@ tar message decoder
+;;
+
+(defun mime/decode-message/tar (beg end cal)
+    (if (tm-tar/y-or-n-p "Do you want to enter tm-tar mode? ")
+	(let ((coding (cdr (assoc 'encoding cal)))
+	      (cur-buf (current-buffer))
+	      (tm-tar/tar-file-name (expand-file-name (concat (make-temp-name
+			(expand-file-name "tm" mime/tmp-dir)) ".tar")))
+	      (tm-tar/tmp-file-name (expand-file-name (make-temp-name
+			(expand-file-name "tm" mime/tmp-dir))))
+	      new-buf
+	      )
+	    (find-file tm-tar/tmp-file-name)
+	    (setq new-buf (current-buffer))
+	    (setq buffer-read-only nil)
+	    (erase-buffer)
+	    (save-excursion
+		 (set-buffer cur-buf)
+		(goto-char beg)
+		(re-search-forward "^$")
+		(append-to-buffer new-buf (+ (match-end 0) 1) end)
+	     )
+	    (if (member coding mime-viewer/uuencode-encoding-name-list)
+		(progn
+		    (goto-char (point-min))
+		    (if (re-search-forward "^begin [0-9]+ " nil t)
+			(progn
+			    (kill-line)
+			    (insert tm-tar/tar-file-name)
+			 )
+			(progn
+			    (set-buffer-modified-p nil)
+			    (kill-buffer new-buf)
+			    (error "uuencode file signature was not found")
+			 ))))
+	    (save-buffer)
+	    (kill-buffer new-buf)
+	    (message "Listing the contents of an archive.  Please wait...")
+	    (cond ((string-equal coding "base64")
+		   (call-process tm-tar/mmencode-program nil nil nil "-u"
+				"-o" tm-tar/tar-file-name tm-tar/tmp-file-name)
+		   )
+		  ((string-equal coding "quoted-printable")
+		   (call-process tm-tar/mmencode-program nil nil nil "-u" "-q"
+				"-o" tm-tar/tar-file-name tm-tar/tmp-file-name)
+		   )
+		  ((member coding mime-viewer/uuencode-encoding-name-list)
+		   (call-process tm-tar/uudecode-program nil nil nil
+				tm-tar/tmp-file-name)
+		   )
+		  (t
+		   (copy-file tm-tar/tmp-file-name tm-tar/tar-file-name t)
+		   ))
+	    (delete-file tm-tar/tmp-file-name)
+	    (setq tm-tar/list-args (list "-tvf" tm-tar/tar-file-name))
+	    (setq tm-tar/view-args (list "-xOf" tm-tar/tar-file-name))
+	    (if (eq 0 (call-process tm-tar/gzip-program
+			    nil nil nil "-t" tm-tar/tar-file-name))
+		(progn
+		    (setq tm-tar/list-args
+			  (append tm-tar/tar-decompress-arg tm-tar/list-args))
+		    (setq tm-tar/view-args
+			  (append tm-tar/tar-decompress-arg tm-tar/view-args))
+		 ))
+	    (switch-to-buffer tm-tar/view-buffer)
+	    (switch-to-buffer tm-tar/list-buffer)
+	    (setq buffer-read-only nil)
+	    (erase-buffer)
+	    (apply 'call-process tm-tar/tar-program
+		   nil t nil tm-tar/list-args)
+	    (if mouse-button-2
+		 (progn
+		    (make-local-variable 'tm:mother-button-dispatcher)
+		    (setq tm:mother-button-dispatcher 'tm-tar/mouse-button-2)
+		 ))
+	    (tm-tar/set-properties)
+	    (tm-tar/tar-mode mime::article/preview-buffer)
+	    (kill-buffer tm-tar/view-buffer)
+	    (kill-buffer tm-tar/list-buffer)
+	    (delete-file tm-tar/tar-file-name)
+	 )
+     ))
+
+;;; @@ program/buffer coding system
+;;;
+
+(cond ((boundp 'MULE)
+       (define-program-coding-system tm-tar/view-buffer nil *autoconv*)
+       )
+      ((boundp 'NEMACS)
+       (define-program-kanji-code tm-tar/view-buffer nil 1)
+       ))
+
+;;; @@ message types to use tm-tar
+;;;
+
+(set-atype 'mime/content-decoding-condition
+	   '((type . "application/octet-stream")
+	     (method . mime/decode-message/tar)
+	     (mode . "play") ("type" . "tar")
+	     ))
+
+(set-atype 'mime/content-decoding-condition
+	   '((type . "application/octet-stream")
+	     (method . mime/decode-message/tar)
+	     (mode . "play") ("type" . "tar+gzip")
+	     ))
+
+(set-atype 'mime/content-decoding-condition
+	   '((type . "application/x-gzip")
+	     (method . mime/decode-message/tar)
+	     (mode . "play") ("type" . "tar")
+	     ))
+
+(set-atype 'mime/content-decoding-condition
+	   '((type . "application/x-tar")
+	     (method . mime/decode-message/tar)
+	     (mode . "play")
+	     ))
+
+;;; @ end
+;;;
+
+(provide 'tm-tar)
+
+;;; Local Variables:
+;;; mode: emacs-lisp
+;;; mode: outline-minor
+;;; outline-regexp: ";;; @+\\|(......"
+;;; End: