diff options
Diffstat (limited to 'lisp/mail/metamail.el')
| -rw-r--r-- | lisp/mail/metamail.el | 202 |
1 files changed, 0 insertions, 202 deletions
diff --git a/lisp/mail/metamail.el b/lisp/mail/metamail.el deleted file mode 100644 index 0e407ea060e..00000000000 --- a/lisp/mail/metamail.el +++ /dev/null @@ -1,202 +0,0 @@ -;;; metamail.el --- Metamail interface for GNU Emacs - -;; Copyright (C) 1993, 1996, 2001-2020 Free Software Foundation, Inc. - -;; Author: Masanobu UMEDA <umerin@mse.kyutech.ac.jp> -;; Keywords: mail, news, mime, multimedia - -;; This file is part of GNU Emacs. - -;; GNU Emacs 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 3 of the License, or -;; (at your option) any later version. - -;; GNU Emacs 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. If not, see <https://www.gnu.org/licenses/>. - -;;; Commentary: - -;; Note: Metamail does not have all the options which are compatible with -;; the environment variables. For that reason, metamail.el has to -;; hack the environment variables. In addition, there is no way to -;; display all header fields without extra informative body messages -;; which are suppressed by the "-q" option. - -;; The idea of using metamail to process MIME messages is from -;; gnus-mime.el by Spike <Spike@world.std.com>. - -;;; Code: - -(defvar rmail-current-message) -(defvar rmail-message-vector) - -(defgroup metamail nil - "Metamail interface for Emacs." - :group 'mail - :group 'processes) - -(defcustom metamail-program-name "metamail" - "Metamail program name." - :type 'string - :group 'metamail) - -(defcustom metamail-mailer-name "emacs" - "Mailer name set to MM_MAILER environment variable." - :type 'string - :group 'metamail) - -(defvar metamail-environment '("KEYHEADS=*" "MM_QUIET=1") - "Environment variables passed to `metamail'. -It must be a list of strings that have the format ENVVARNAME=VALUE. -It is not expected to be altered globally by `set' or `setq'. -Instead, change its value temporary using `let' or `let*' form.") - -(defcustom metamail-switches '("-x" "-d" "-z") - "Switches for `metamail' program. -`-z' is required to remove zap file. -It is not expected to be altered globally by `set' or `setq'. -Instead, change its value temporary using `let' or `let*' form. -`-m MAILER' argument is automatically generated from the -`metamail-mailer-name' variable." - :type '(repeat (string :tag "Switch")) - :group 'metamail) - -;;;###autoload -(defun metamail-interpret-header () - "Interpret a header part of a MIME message in current buffer. -Its body part is not interpreted at all." - (interactive) - (save-excursion - (let* ((buffer-read-only nil) - (metamail-switches ;Inhibit processing an empty body. - (append metamail-switches '("-c" "text/plain" "-E" "7bit"))) - (end (progn - (goto-char (point-min)) - (search-forward "\n\n" nil 'move) - ;; An extra newline is inserted by metamail if there - ;; is no body part. So, insert a dummy body by - ;; itself. - (insert "\n") - (point)))) - (metamail-region (point-min) end nil nil 'nodisplay) - ;; Remove an extra newline inserted by myself. - (goto-char (point-min)) - (if (search-forward "\n\n\n" nil t) - (delete-char -1)) - ))) - -;;;###autoload -(defun metamail-interpret-body (&optional viewmode nodisplay) - "Interpret a body part of a MIME message in current buffer. -Optional argument VIEWMODE specifies the value of the -EMACS_VIEW_MODE environment variable (defaulted to 1). -Optional argument NODISPLAY non-nil means buffer is not -redisplayed as output is inserted. -Its header part is not interpreted at all." - (interactive "p") - (save-excursion - (let ((contype nil) - (encoding nil) - (end (progn - (goto-char (point-min)) - (search-forward "\n\n" nil t) - (point)))) - ;; Find Content-Type and Content-Transfer-Encoding from the header. - (save-restriction - (narrow-to-region (point-min) end) - (setq contype - (or (mail-fetch-field "Content-Type") "text/plain")) - (setq encoding - (or (mail-fetch-field "Content-Transfer-Encoding") "7bit"))) - ;; Interpret the body part only. - (let ((metamail-switches ;Process body part only. - (append metamail-switches - (list "-b" "-c" contype "-E" encoding)))) - (metamail-region end (point-max) viewmode nil nodisplay)) - ;; This mode specific hack is no longer appropriate in mbox Rmail. - ;; Pre-mbox, we have just modified the actual folder, so we - ;; update the message-vector with the new end position of the - ;; current message. In mbox Rmail, all we have done is modify a - ;; display copy of the message. Note also that point-max is a - ;; marker in the wrong buffer: the message-vector contains - ;; markers in rmail-view-buffer (which is not in rmail-mode). - ;; So this hack actually breaks the message-vector. - ;; If you're calling this on the actual rmail-view-buffer (or a - ;; non-swapped rmail-buffer), you would still need this hack. - ;; But you're not going to do that. -;;; (cond ((eq major-mode 'rmail-mode) -;;; ;; Adjust the marker of this message if in Rmail mode buffer. -;;; (set-marker (aref rmail-message-vector (1+ rmail-current-message)) -;;; (point-max)))) - ))) - -;;;###autoload -(defun metamail-buffer (&optional viewmode buffer nodisplay) - "Process current buffer through `metamail'. -Optional argument VIEWMODE specifies the value of the -EMACS_VIEW_MODE environment variable (defaulted to 1). -Optional argument BUFFER specifies a buffer to be filled (nil -means current). -Optional argument NODISPLAY non-nil means buffer is not -redisplayed as output is inserted." - (interactive "p") - (metamail-region (point-min) (point-max) viewmode buffer nodisplay)) - -;;;###autoload -(defun metamail-region (beg end &optional viewmode buffer nodisplay) - "Process current region through `metamail'. -Optional argument VIEWMODE specifies the value of the -EMACS_VIEW_MODE environment variable (defaulted to 1). -Optional argument BUFFER specifies a buffer to be filled (nil -means current). -Optional argument NODISPLAY non-nil means buffer is not -redisplayed as output is inserted." - (interactive "r\np") - (let ((curbuf (current-buffer)) - (buffer-read-only nil) - (metafile (make-temp-file "metamail")) - (option-environment - (list (format "EMACS_VIEW_MODE=%d" - (if (numberp viewmode) viewmode 1))))) - (save-excursion - ;; Gee! Metamail does not output to stdout if input comes from - ;; stdin. - (let ((selective-display nil)) ;Disable ^M to nl translation. - (write-region beg end metafile nil 'nomessage)) - (if buffer - (set-buffer buffer)) - (setq buffer-read-only nil) - ;; Clear destination buffer. - (if (eq curbuf (current-buffer)) - (delete-region beg end) - (delete-region (point-min) (point-max))) - ;; We have to pass the environment variable KEYHEADS to display - ;; all header fields. Metamail should have an optional argument - ;; to pass such information directly. - (let ((process-environment - (append process-environment - metamail-environment option-environment)) - (coding-system-for-read 'undecided)) - (apply (function call-process) - metamail-program-name - nil - t ;Output to current buffer - (not nodisplay) ;Force redisplay - (append metamail-switches - (list "-m" (or metamail-mailer-name "emacs")) - (list metafile)))) - ;; `metamail' may not delete the temporary file! - (condition-case error - (delete-file metafile) - (error nil)) - ))) - -(provide 'metamail) - -;;; metamail.el ends here |