--- /dev/null
+;;; mime-tar.el --- mime-view internal method for tar or tar+gzip format
+
+;; Copyright (C) 1995,1996,1997 Free Software Foundation, Inc.
+
+;; Author: Hiroshi Ueno <zodiac@ibm.net>
+;; modified by MORIOKA Tomohiko <morioka@jaist.ac.jp>
+;; Renamed: 1997/2/26 from tm-tar.el
+;; Version: $Id: mime-tar.el,v 0.0 1997-02-26 04:57:33 tmorioka Exp $
+;; Keywords: tar, tar+gzip, 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.
+
+;;; Commentary:
+
+;; Internal viewer for
+;; - application/x-tar
+;; - application/x-gzip, type="tar"
+;; - aplication/octet-stream, type="tar"
+;; - aplication/octet-stream, type="tar+gzip"
+
+;;; Code:
+
+(require 'emu)
+(require 'mime-view)
+
+
+;;; @ constants
+;;;
+
+(defconst mime-tar-list-buffer "*mime-tar-List*")
+(defconst mime-tar-view-buffer "*mime-tar-View*")
+(defconst mime-tar-file-search-regexp "[0-9]+\:[0-9\:]+[ ]+[0-9]+[ ]+")
+(defconst mime-tar-popup-menu-title "Action Menu")
+
+
+;;; @ variables
+;;;
+
+(defvar mime-tar-program "gtar")
+(defvar mime-tar-decompress-arg '("-z"))
+(defvar mime-tar-gzip-program "gzip")
+(defvar mime-tar-mmencode-program "mmencode")
+(defvar mime-tar-uudecode-program "uudecode")
+
+(defvar mime-tar-popup-menu-items
+ '(("View File" . mime-tar-view-file)
+ ("Key Help" . mime-tar-helpful-message)
+ ("Quit mime-tar Mode" . exit-recursive-edit)
+ ))
+
+(cond ((string-match "XEmacs\\|Lucid" emacs-version)
+ (defvar mime-tar-popup-menu
+ (cons mime-tar-popup-menu-title
+ (mapcar (function
+ (lambda (item)
+ (vector (car item)(cdr item) t)
+ ))
+ mime-tar-popup-menu-items)))
+
+ (defun mime-tar-mouse-button-2 (event)
+ (popup-menu mime-tar-popup-menu)
+ )
+ )
+ ((>= emacs-major-version 19)
+ (defun mime-tar-mouse-button-2 (event)
+ (let ((menu
+ (cons mime-tar-popup-menu-title
+ (list (cons "Menu Items" mime-tar-popup-menu-items))
+ )))
+ (let ((func (x-popup-menu event menu)))
+ (if func
+ (funcall func)
+ ))
+ ))
+ ))
+
+(defvar mime-tar-mode-map nil)
+(if mime-tar-mode-map
+ nil
+ (setq mime-tar-mode-map (make-keymap))
+ (suppress-keymap mime-tar-mode-map)
+ (define-key mime-tar-mode-map "\C-c" 'exit-recursive-edit)
+ (define-key mime-tar-mode-map "q" 'exit-recursive-edit)
+ (define-key mime-tar-mode-map "n" 'mime-tar-next-line)
+ (define-key mime-tar-mode-map " " 'mime-tar-next-line)
+ (define-key mime-tar-mode-map "\C-m" 'mime-tar-next-line)
+ (define-key mime-tar-mode-map "p" 'mime-tar-previous-line)
+ (define-key mime-tar-mode-map "\177" 'mime-tar-previous-line)
+ (define-key mime-tar-mode-map "\C-\M-m" 'mime-tar-previous-line)
+ (define-key mime-tar-mode-map "v" 'mime-tar-view-file)
+ (define-key mime-tar-mode-map "\C-h" 'Helper-help)
+ (define-key mime-tar-mode-map "?" 'mime-tar-helpful-message)
+ (if mouse-button-2
+ (define-key mime-tar-mode-map
+ mouse-button-2 'mime-button-dispatcher))
+ )
+
+
+;;; @@ mime-tar mode functions
+;;;
+
+(defun mime-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 "mime-tar")
+ (mode-line-buffer-identification '("%17b"))
+ )
+ (goto-char (point-min))
+ (mime-tar-move-to-filename)
+ (catch 'mime-tar-mode (mime-tar-command-loop))
+ )
+ (if prev-buf
+ (switch-to-buffer prev-buf)
+ )
+ ))
+
+(defun mime-tar-command-loop ()
+ (let ((old-local-map (current-local-map)))
+ (unwind-protect
+ (progn
+ (use-local-map mime-tar-mode-map)
+ (mime-tar-helpful-message)
+ (recursive-edit)
+ )
+ (save-excursion
+ (use-local-map old-local-map)
+ ))
+ ))
+
+(defun mime-tar-next-line ()
+ (interactive)
+ (next-line 1)
+ (mime-tar-move-to-filename)
+ )
+
+(defun mime-tar-previous-line ()
+ (interactive)
+ (previous-line 1)
+ (mime-tar-move-to-filename)
+ )
+
+(defun mime-tar-view-file ()
+ (interactive)
+ (let ((name (mime-tar-get-filename))
+ )
+ (save-excursion
+ (switch-to-buffer mime-tar-view-buffer)
+ (setq buffer-read-only nil)
+ (erase-buffer)
+ (message "Reading a file from an archive. Please wait...")
+ (apply 'call-process mime-tar-program
+ nil t nil (append mime-tar-view-args (list name)))
+ (goto-char (point-min))
+ )
+ (view-buffer mime-tar-view-buffer)
+ ))
+
+(defun mime-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 mime-tar-file-search-regexp eol t)
+ (let ((beg (point)))
+ (skip-chars-forward "^ \n")
+ (buffer-substring beg (point))
+ )
+ (error "No file on this line")
+ ))
+ ))
+
+(defun mime-tar-move-to-filename ()
+ (let ((eol (progn (end-of-line) (point))))
+ (beginning-of-line)
+ (re-search-forward mime-tar-file-search-regexp eol t)
+ ))
+
+(defun mime-tar-set-properties ()
+ (if mouse-button-2
+ (let ((beg (point-min))
+ (end (point-max))
+ )
+ (goto-char beg)
+ (save-excursion
+ (while (re-search-forward mime-tar-file-search-regexp end t)
+ (tm:add-button (point)
+ (progn
+ (end-of-line)
+ (point))
+ 'mime-tar-view-file)
+ ))
+ )))
+
+(defun mime-tar-helpful-message ()
+ (interactive)
+ (message "Type %s, %s, %s, %s, %s, %s."
+ (substitute-command-keys "\\[Helper-help] for help")
+ (substitute-command-keys "\\[mime-tar-helpful-message] for keys")
+ (substitute-command-keys "\\[mime-tar-next-line] to next")
+ (substitute-command-keys "\\[mime-tar-previous-line] to prev")
+ (substitute-command-keys "\\[mime-tar-view-file] to view")
+ (substitute-command-keys "\\[exit-recursive-edit] to quit")
+ ))
+
+(defun mime-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 (mime-tar-y-or-n-p "Do you want to enter mime-tar mode? ")
+ (let ((coding (cdr (assoc 'encoding cal)))
+ (cur-buf (current-buffer))
+ (mime-tar-file-name
+ (expand-file-name
+ (concat (make-temp-name
+ (expand-file-name "tm" mime/tmp-dir)) ".tar")))
+ (mime-tar-tmp-file-name
+ (expand-file-name (make-temp-name
+ (expand-file-name "tm" mime/tmp-dir))))
+ new-buf)
+ (find-file mime-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 mime-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 mime-tar-mmencode-program nil nil nil "-u"
+ "-o" mime-tar-file-name mime-tar-tmp-file-name)
+ )
+ ((string-equal coding "quoted-printable")
+ (call-process mime-tar-mmencode-program nil nil nil "-u" "-q"
+ "-o" mime-tar-file-name mime-tar-tmp-file-name)
+ )
+ ((member coding mime-viewer/uuencode-encoding-name-list)
+ (call-process mime-tar-uudecode-program nil nil nil
+ mime-tar-tmp-file-name)
+ )
+ (t
+ (copy-file mime-tar-tmp-file-name mime-tar-file-name t)
+ ))
+ (delete-file mime-tar-tmp-file-name)
+ (setq mime-tar-list-args (list "-tvf" mime-tar-file-name))
+ (setq mime-tar-view-args (list "-xOf" mime-tar-file-name))
+ (if (eq 0 (call-process mime-tar-gzip-program
+ nil nil nil "-t" mime-tar-file-name))
+ (progn
+ (setq mime-tar-list-args
+ (append mime-tar-decompress-arg mime-tar-list-args))
+ (setq mime-tar-view-args
+ (append mime-tar-decompress-arg mime-tar-view-args))
+ ))
+ (switch-to-buffer mime-tar-view-buffer)
+ (switch-to-buffer mime-tar-list-buffer)
+ (setq buffer-read-only nil)
+ (erase-buffer)
+ (apply 'call-process mime-tar-program
+ nil t nil mime-tar-list-args)
+ (if mouse-button-2
+ (progn
+ (make-local-variable 'mime-button-mother-dispatcher)
+ (setq mime-button-mother-dispatcher 'mime-tar-mouse-button-2)
+ ))
+ (mime-tar-set-properties)
+ (mime-tar-mode mime::article/preview-buffer)
+ (kill-buffer mime-tar-view-buffer)
+ (kill-buffer mime-tar-list-buffer)
+ (delete-file mime-tar-file-name)
+ )
+ ))
+
+;;; @@ program/buffer coding system
+;;;
+
+(cond ((boundp 'MULE)
+ (define-program-coding-system mime-tar-view-buffer nil *autoconv*)
+ )
+ ((boundp 'NEMACS)
+ (define-program-kanji-code mime-tar-view-buffer nil 1)
+ ))
+
+;;; @@ message types to use mime-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 'mime-tar)
+
+;;; mime-tar.el ends here
projects / elisp / semi.git / commitdiff