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|
;;;
;;; $Id: tm-tar.el,v 1.22 1995/10/21 15:34:33 H.Ueno 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:
|
