562 lines
17 KiB
EmacsLisp
562 lines
17 KiB
EmacsLisp
;;; mime-play.el --- Playback processing module for mime-view.el
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;; Copyright (C) 1994,95,96,97,98,99,2000 Free Software Foundation, Inc.
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;; Author: MORIOKA Tomohiko <tomo@m17n.org>
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;; Created: 1995/9/26 (separated from tm-view.el)
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;; Renamed: 1997/2/21 from tm-play.el
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;; Keywords: MIME, multimedia, mail, news
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;; This file is part of SEMI (Secretariat of Emacs MIME Interfaces).
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;; This program is free software; you can redistribute it and/or
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;; modify it under the terms of the GNU General Public License as
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;; published by the Free Software Foundation; either version 2, or (at
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;; your option) any later version.
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;; This program is distributed in the hope that it will be useful, but
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;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;; General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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;; Boston, MA 02111-1307, USA.
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;;; Code:
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(require 'mime-view)
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(require 'alist)
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(require 'filename)
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(eval-when-compile
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(condition-case nil
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(require 'bbdb)
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(error (defvar bbdb-buffer-name nil)))
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)
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(defcustom mime-save-directory "~/"
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"*Name of the directory where MIME entity will be saved in.
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If t, it means current directory."
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:group 'mime-view
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:type '(choice (const :tag "Current directory" t)
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(directory)))
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(defcustom mime-play-delete-file-immediately t
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"If non-nil, delete played file immediately."
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:group 'mime-view
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:type 'boolean)
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(defvar mime-play-find-every-situations t
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"*Find every available situations if non-nil.")
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(defvar mime-play-messages-coding-system nil
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"Coding system to be used for external MIME playback method.")
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;;; @ content decoder
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;;;
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;;;###autoload
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(defun mime-preview-play-current-entity (&optional ignore-examples mode)
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"Play current entity.
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It decodes current entity to call internal or external method. The
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method is selected from variable `mime-acting-condition'.
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If IGNORE-EXAMPLES (C-u prefix) is specified, this function ignores
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`mime-acting-situation-example-list'.
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If MODE is specified, play as it. Default MODE is \"play\"."
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(interactive "P")
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(let ((entity (get-text-property (point) 'mime-view-entity)))
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(if entity
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(let ((situation
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(get-text-property (point) 'mime-view-situation)))
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(or mode
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(setq mode "play"))
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(setq situation
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(if (assq 'mode situation)
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(put-alist 'mode mode (copy-alist situation))
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(cons (cons 'mode mode)
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situation)))
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(if ignore-examples
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(setq situation
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(cons (cons 'ignore-examples ignore-examples)
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situation)))
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(mime-play-entity entity situation)
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))))
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;;;###autoload
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(defun mime-play-entity (entity &optional situation ignored-method)
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"Play entity specified by ENTITY.
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It decodes the entity to call internal or external method. The method
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is selected from variable `mime-acting-condition'. If MODE is
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specified, play as it. Default MODE is \"play\"."
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(let ((ret
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(mime-unify-situations (mime-entity-situation entity situation)
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mime-acting-condition
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mime-acting-situation-example-list
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'method ignored-method
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mime-play-find-every-situations))
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method)
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(setq mime-acting-situation-example-list (cdr ret)
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ret (car ret))
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(cond ((cdr ret)
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(setq ret (mime-select-menu-alist
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"Methods"
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(mapcar (function
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(lambda (situation)
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(cons
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(format "%s"
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(cdr (assq 'method situation)))
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situation)))
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ret)))
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(setq ret (mime-sort-situation ret))
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(add-to-list 'mime-acting-situation-example-list (cons ret 0))
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)
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(t
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(setq ret (car ret))
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))
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(setq method (cdr (assq 'method ret)))
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(cond ((and (symbolp method)
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(fboundp method))
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(funcall method entity ret)
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)
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((stringp method)
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(mime-activate-mailcap-method entity ret)
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)
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;; ((and (listp method)(stringp (car method)))
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;; (mime-activate-external-method entity ret)
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;; )
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(t
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(mime-show-echo-buffer "No method are specified for %s\n"
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(mime-type/subtype-string
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(cdr (assq 'type situation))
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(cdr (assq 'subtype situation))))
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(if (y-or-n-p "Do you want to save current entity to disk?")
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(mime-save-content entity situation))
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))
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))
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;;; @ external decoder
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;;;
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(defvar mime-mailcap-method-filename-alist nil)
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(defun mime-activate-mailcap-method (entity situation)
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(let ((method (cdr (assoc 'method situation)))
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(name (mime-entity-safe-filename entity)))
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(setq name (expand-file-name (if (and name (not (string= name "")))
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name
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(make-temp-name "EMI"))
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(make-temp-file "EMI" 'directory)))
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(mime-write-entity-content entity name)
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(message "External method is starting...")
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(let ((process
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(let ((command
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(mime-format-mailcap-command
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method
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(cons (cons 'filename name) situation)))
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(coding-system-for-read mime-play-messages-coding-system))
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(start-process command mime-echo-buffer-name
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shell-file-name shell-command-switch command))))
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(set-alist 'mime-mailcap-method-filename-alist process name)
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(set-process-sentinel process 'mime-mailcap-method-sentinel))))
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(defun mime-mailcap-method-sentinel (process event)
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(when mime-play-delete-file-immediately
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(let ((file (cdr (assq process mime-mailcap-method-filename-alist))))
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(when (file-exists-p file)
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(ignore-errors
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(delete-file file)
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(delete-directory (file-name-directory file)))))
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(remove-alist 'mime-mailcap-method-filename-alist process))
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(message "%s %s" process event))
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(defun mime-mailcap-delete-played-files ()
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(dolist (elem mime-mailcap-method-filename-alist)
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(when (file-exists-p (cdr elem))
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(ignore-errors
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(delete-file (cdr elem))
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(delete-directory (file-name-directory (cdr elem)))))))
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(add-hook 'kill-emacs-hook 'mime-mailcap-delete-played-files)
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(defvar mime-echo-window-is-shared-with-bbdb
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(module-installed-p 'bbdb)
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"*If non-nil, mime-echo window is shared with BBDB window.")
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(defvar mime-echo-window-height
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(function
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(lambda ()
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(/ (window-height) 5)
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))
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"*Size of mime-echo window.
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It allows function or integer. If it is function,
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`mime-show-echo-buffer' calls it to get height of mime-echo window.
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Otherwise `mime-show-echo-buffer' uses it as height of mime-echo
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window.")
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(defun mime-show-echo-buffer (&rest forms)
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"Show mime-echo buffer to display MIME-playing information."
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(get-buffer-create mime-echo-buffer-name)
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(let ((the-win (selected-window))
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(win (get-buffer-window mime-echo-buffer-name)))
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(unless win
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(unless (and mime-echo-window-is-shared-with-bbdb
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(condition-case nil
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(setq win (get-buffer-window bbdb-buffer-name))
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(error nil)))
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(select-window (get-buffer-window (or mime-preview-buffer
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(current-buffer))))
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(setq win (split-window-vertically
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(- (window-height)
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(if (functionp mime-echo-window-height)
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(funcall mime-echo-window-height)
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mime-echo-window-height)
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)))
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)
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(set-window-buffer win mime-echo-buffer-name)
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)
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(select-window win)
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(goto-char (point-max))
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(if forms
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(let ((buffer-read-only nil))
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(insert (apply (function format) forms))
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))
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(select-window the-win)
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))
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;;; @ file name
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;;;
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(defvar mime-view-file-name-char-regexp "[A-Za-z0-9+_-]")
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(defvar mime-view-file-name-regexp-1
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(concat mime-view-file-name-char-regexp "+\\."
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mime-view-file-name-char-regexp "+"))
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(defvar mime-view-file-name-regexp-2
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(concat (regexp-* mime-view-file-name-char-regexp)
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"\\(\\." mime-view-file-name-char-regexp "+\\)*"))
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(defun mime-entity-safe-filename (entity)
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(let ((filename
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(or (mime-entity-filename entity)
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(let ((subj
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(or (mime-entity-read-field entity 'Content-Description)
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(mime-entity-read-field entity 'Subject))))
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(if (and subj
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(or (string-match mime-view-file-name-regexp-1 subj)
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(string-match mime-view-file-name-regexp-2 subj)))
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(substring subj (match-beginning 0)(match-end 0))
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)))))
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(if filename
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(replace-as-filename filename)
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)))
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;;; @ file extraction
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;;;
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(defun mime-save-content (entity situation)
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(let ((name (or (mime-entity-safe-filename entity)
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(format "%s" (mime-entity-media-type entity))))
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(dir (if (eq t mime-save-directory)
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default-directory
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mime-save-directory))
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filename)
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(setq filename (read-file-name
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(concat "File name: (default "
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(file-name-nondirectory name) ") ")
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dir
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(concat (file-name-as-directory dir)
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(file-name-nondirectory name))))
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(if (file-directory-p filename)
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(setq filename (concat (file-name-as-directory filename)
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(file-name-nondirectory name))))
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(if (file-exists-p filename)
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(or (yes-or-no-p (format "File %s exists. Save anyway? " filename))
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(error "")))
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(mime-write-entity-content entity (expand-file-name filename))
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))
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;;; @ file detection
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;;;
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(defvar mime-magic-type-alist
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'(("^\377\330\377[\340\356]..JFIF" image jpeg)
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("^\211PNG" image png)
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("^GIF8[79]" image gif)
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("^II\\*\000" image tiff)
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("^MM\000\\*" image tiff)
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("^MThd" audio midi)
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("^\000\000\001\263" video mpeg)
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)
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"*Alist of regexp about magic-number vs. corresponding media-types.
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Each element looks like (REGEXP TYPE SUBTYPE).
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REGEXP is a regular expression to match against the beginning of the
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content of entity.
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TYPE is symbol to indicate primary type of media-type.
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SUBTYPE is symbol to indicate subtype of media-type.")
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(defun mime-detect-content (entity situation)
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(let (type subtype)
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(let ((mdata (mime-entity-content entity))
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(rest mime-magic-type-alist))
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(while (not (let ((cell (car rest)))
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(if cell
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(if (string-match (car cell) mdata)
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(setq type (nth 1 cell)
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subtype (nth 2 cell))
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)
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t)))
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(setq rest (cdr rest))))
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(setq situation (del-alist 'method (copy-alist situation)))
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(mime-play-entity entity
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(if type
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(put-alist 'type type
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(put-alist 'subtype subtype
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situation))
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situation)
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'mime-detect-content)))
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;;; @ mail/news message
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;;;
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(defun mime-preview-quitting-method-for-mime-show-message-mode ()
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"Quitting method for mime-view.
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It is registered to variable `mime-preview-quitting-method-alist'."
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(let ((mother mime-mother-buffer)
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(win-conf mime-preview-original-window-configuration))
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(if (and (boundp 'mime-view-temp-message-buffer)
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(buffer-live-p mime-view-temp-message-buffer))
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(kill-buffer mime-view-temp-message-buffer))
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(mime-preview-kill-buffer)
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(set-window-configuration win-conf)
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(pop-to-buffer mother)))
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(defun mime-view-message/rfc822 (entity situation)
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(let* ((new-name
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(format "%s-%s" (buffer-name) (mime-entity-number entity)))
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(mother (current-buffer))
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(children (car (mime-entity-children entity)))
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(preview-buffer
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(mime-display-message
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children new-name mother nil
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(cdr (assq 'major-mode
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(get-text-property (point) 'mime-view-situation))))))
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(or (get-buffer-window preview-buffer)
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(let ((m-win (get-buffer-window mother)))
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(if m-win
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(set-window-buffer m-win preview-buffer)
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(switch-to-buffer preview-buffer)
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)))))
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;;; @ message/partial
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;;;
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(defun mime-require-safe-directory (dir)
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"Create a directory DIR safely.
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The permission of the created directory becomes `700' (for the owner only).
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If the directory already exists and is writable by other users, an error
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occurs."
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(let ((attr (file-attributes dir))
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(orig-modes (default-file-modes)))
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(if (and attr (eq (car attr) t)) ; directory already exists.
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(unless (or (memq system-type '(windows-nt ms-dos OS/2 emx))
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(and (eq (nth 2 attr) (user-real-uid))
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(eq (file-modes dir) 448)))
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(error "Invalid owner or permission for %s" dir))
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(unwind-protect
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(progn
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(set-default-file-modes 448)
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(make-directory dir))
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(set-default-file-modes orig-modes)))))
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(defun mime-store-message/partial-piece (entity cal)
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(let* ((root-dir
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(expand-file-name
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(concat "m-prts-" (user-login-name)) temporary-file-directory))
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(id (cdr (assoc "id" cal)))
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(number (cdr (assoc "number" cal)))
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(total (cdr (assoc "total" cal)))
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file
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(mother (current-buffer))
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(orig-modes (default-file-modes)))
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(mime-require-safe-directory root-dir)
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(or (file-exists-p root-dir)
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(unwind-protect
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(progn
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(set-default-file-modes 448)
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(make-directory root-dir))
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(set-default-file-modes orig-modes)))
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(setq id (replace-as-filename id))
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(setq root-dir (concat root-dir "/" id))
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(or (file-exists-p root-dir)
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(unwind-protect
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(progn
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(set-default-file-modes 448)
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(make-directory root-dir))
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(set-default-file-modes orig-modes)))
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(setq file (concat root-dir "/FULL"))
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(if (file-exists-p file)
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(let ((full-buf (get-buffer-create "FULL"))
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(pwin (or (get-buffer-window mother)
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(get-largest-window)))
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pbuf)
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(save-window-excursion
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(set-buffer full-buf)
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(erase-buffer)
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(binary-insert-encoded-file file)
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(setq major-mode 'mime-show-message-mode)
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(mime-view-buffer (current-buffer) nil mother)
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(setq pbuf (current-buffer))
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(make-local-variable 'mime-view-temp-message-buffer)
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(setq mime-view-temp-message-buffer full-buf))
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(set-window-buffer pwin pbuf)
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(select-window pwin))
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(setq file (concat root-dir "/" number))
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(mime-write-entity-body entity file)
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(let ((total-file (concat root-dir "/CT")))
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(setq total
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(if total
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(progn
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(or (file-exists-p total-file)
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(save-excursion
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(set-buffer
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(get-buffer-create mime-temp-buffer-name))
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(erase-buffer)
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(insert total)
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(write-region (point-min)(point-max) total-file)
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(kill-buffer (current-buffer))
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))
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(string-to-number total)
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)
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(and (file-exists-p total-file)
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(save-excursion
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(set-buffer (find-file-noselect total-file))
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(prog1
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(and (re-search-forward "[0-9]+" nil t)
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(string-to-number
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(buffer-substring (match-beginning 0)
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(match-end 0)))
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)
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(kill-buffer (current-buffer))
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)))
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)))
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(if (and total (> total 0)
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(>= (length (directory-files root-dir nil "^[0-9]+$" t))
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total))
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(catch 'tag
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(save-excursion
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(set-buffer (get-buffer-create mime-temp-buffer-name))
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(let ((full-buf (current-buffer)))
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(erase-buffer)
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(let ((i 1))
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(while (<= i total)
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(setq file (concat root-dir "/" (int-to-string i)))
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(or (file-exists-p file)
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(throw 'tag nil)
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)
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(binary-insert-encoded-file file)
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(goto-char (point-max))
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(setq i (1+ i))))
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(binary-write-decoded-region
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(point-min)(point-max)
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(expand-file-name "FULL" root-dir))
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(let ((i 1))
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(while (<= i total)
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(let ((file (format "%s/%d" root-dir i)))
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(and (file-exists-p file)
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(delete-file file)))
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(setq i (1+ i))))
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(let ((file (expand-file-name "CT" root-dir)))
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(and (file-exists-p file)
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(delete-file file)))
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(let ((buf (current-buffer))
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(pwin (or (get-buffer-window mother)
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(get-largest-window)))
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(pbuf (mime-display-message
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(mime-open-entity 'buffer (current-buffer))
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|
nil mother nil 'mime-show-message-mode)))
|
|
(with-current-buffer pbuf
|
|
(make-local-variable 'mime-view-temp-message-buffer)
|
|
(setq mime-view-temp-message-buffer buf))
|
|
(set-window-buffer pwin pbuf)
|
|
(select-window pwin)
|
|
)))))
|
|
)))
|
|
|
|
|
|
;;; @ message/external-body
|
|
;;;
|
|
|
|
(defvar mime-raw-dired-function
|
|
(if (and (>= emacs-major-version 19) window-system)
|
|
(function dired-other-frame)
|
|
(function mime-raw-dired-function-for-one-frame)
|
|
))
|
|
|
|
(defun mime-raw-dired-function-for-one-frame (dir)
|
|
(let ((win (or (get-buffer-window mime-preview-buffer)
|
|
(get-largest-window))))
|
|
(select-window win)
|
|
(dired dir)
|
|
))
|
|
|
|
(defun mime-view-message/external-anon-ftp (entity cal)
|
|
(let* ((site (cdr (assoc "site" cal)))
|
|
(directory (cdr (assoc "directory" cal)))
|
|
(name (cdr (assoc "name" cal)))
|
|
(pathname (concat "/anonymous@" site ":" directory)))
|
|
(message "%s" (concat "Accessing " (expand-file-name name pathname) "..."))
|
|
(funcall mime-raw-dired-function pathname)
|
|
(goto-char (point-min))
|
|
(search-forward name)
|
|
))
|
|
|
|
(defvar mime-raw-browse-url-function mime-browse-url-function)
|
|
|
|
(defun mime-view-message/external-url (entity cal)
|
|
(let ((url (cdr (assoc "url" cal))))
|
|
(message "%s" (concat "Accessing " url "..."))
|
|
(funcall mime-raw-browse-url-function url)))
|
|
|
|
|
|
;;; @ rot13-47
|
|
;;;
|
|
|
|
(defun mime-view-caesar (entity situation)
|
|
"Internal method for mime-view to display ROT13-47-48 message."
|
|
(let ((buf (get-buffer-create
|
|
(format "%s-%s" (buffer-name) (mime-entity-number entity)))))
|
|
(with-current-buffer buf
|
|
(setq buffer-read-only nil)
|
|
(erase-buffer)
|
|
(mime-insert-text-content entity)
|
|
(mule-caesar-region (point-min) (point-max))
|
|
(set-buffer-modified-p nil)
|
|
)
|
|
(let ((win (get-buffer-window (current-buffer))))
|
|
(or (eq (selected-window) win)
|
|
(select-window (or win (get-largest-window)))
|
|
))
|
|
(view-buffer buf)
|
|
(goto-char (point-min))
|
|
))
|
|
|
|
|
|
;;; @ end
|
|
;;;
|
|
|
|
(provide 'mime-play)
|
|
|
|
;;; mime-play.el ends here
|