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217 lines
7.1 KiB
EmacsLisp
217 lines
7.1 KiB
EmacsLisp
;;; pmailedit.el --- "PMAIL edit mode" Edit the current message
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;; Copyright (C) 1985, 1994, 2001, 2002, 2003, 2004, 2005, 2006,
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;; 2007, 2008, 2009 Free Software Foundation, Inc.
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;; Maintainer: FSF
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;; Keywords: mail
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU 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. If not, see <http://www.gnu.org/licenses/>.
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;;; Commentary:
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;;; Code:
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(eval-when-compile
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(require 'pmail)
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(require 'pmailsum))
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(defcustom pmail-edit-mode-hook nil
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"List of functions to call when editing an PMAIL message."
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:type 'hook
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:version "21.1"
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:group 'pmail-edit)
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(defvar pmail-old-text)
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(defvar pmail-edit-map nil)
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(if pmail-edit-map
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nil
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;; Make a keymap that inherits text-mode-map.
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(setq pmail-edit-map (make-sparse-keymap))
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(set-keymap-parent pmail-edit-map text-mode-map)
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(define-key pmail-edit-map "\C-c\C-c" 'pmail-cease-edit)
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(define-key pmail-edit-map "\C-c\C-]" 'pmail-abort-edit))
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;; Pmail Edit mode is suitable only for specially formatted data.
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(put 'pmail-edit-mode 'mode-class 'special)
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(declare-function pmail-summary-disable "" ())
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(declare-function pmail-summary-enable "pmailsum" ())
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(defun pmail-edit-mode ()
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"Major mode for editing the contents of an PMAIL message.
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The editing commands are the same as in Text mode, together with two commands
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to return to regular PMAIL:
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* \\[pmail-abort-edit] cancels the changes
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you have made and returns to PMAIL
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* \\[pmail-cease-edit] makes them permanent.
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This functions runs the normal hook `pmail-edit-mode-hook'.
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\\{pmail-edit-map}"
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(if (pmail-summary-exists)
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(save-excursion
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(set-buffer pmail-summary-buffer)
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(pmail-summary-disable)))
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(let (buffer-swapped-with)
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;; Prevent change-major-mode-hook from unswapping the buffers.
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(delay-mode-hooks (text-mode))
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(use-local-map pmail-edit-map)
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(setq major-mode 'pmail-edit-mode)
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(setq mode-name "PMAIL Edit")
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(if (boundp 'mode-line-modified)
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(setq mode-line-modified (default-value 'mode-line-modified))
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(setq mode-line-format (default-value 'mode-line-format)))
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(run-mode-hooks 'pmail-edit-mode-hook)))
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(defvar pmail-old-pruned nil)
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(put 'pmail-old-pruned 'permanent-local t)
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;;;###autoload
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(defun pmail-edit-current-message ()
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"Edit the contents of this message."
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(interactive)
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(if (= pmail-total-messages 0)
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(error "No messages in this buffer"))
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(make-local-variable 'pmail-old-pruned)
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(setq pmail-old-pruned (eq pmail-header-style 'normal))
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(pmail-edit-mode)
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(make-local-variable 'pmail-old-text)
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(save-restriction
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(widen)
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(setq pmail-old-text (buffer-substring (point-min) (point-max))))
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(setq buffer-read-only nil)
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(setq buffer-undo-list nil)
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(force-mode-line-update)
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(if (and (eq (key-binding "\C-c\C-c") 'pmail-cease-edit)
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(eq (key-binding "\C-c\C-]") 'pmail-abort-edit))
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(message "Editing: Type C-c C-c to return to Pmail, C-c C-] to abort")
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(message "%s" (substitute-command-keys
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"Editing: Type \\[pmail-cease-edit] to return to Pmail, \\[pmail-abort-edit] to abort"))))
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(defun pmail-cease-edit ()
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"Finish editing message; switch back to Pmail proper."
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(interactive)
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(if (pmail-summary-exists)
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(save-excursion
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(set-buffer pmail-summary-buffer)
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(pmail-summary-enable)))
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(widen)
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;; Disguise any "From " lines so they don't start a new message.
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(save-excursion
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(goto-char (point-min))
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(while (search-forward "\nFrom " nil t)
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(beginning-of-line)
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(insert ">")))
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;; Make sure buffer ends with a blank line
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;; so as not to run this message together with the following one.
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(save-excursion
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(goto-char (point-max))
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(if (/= (preceding-char) ?\n)
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(insert "\n"))
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(unless (looking-back "\n\n")
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(insert "\n")))
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(let ((old pmail-old-text)
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character-coding is-text-message coding-system
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headers-end)
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;; Go back to Pmail mode, but carefully.
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(force-mode-line-update)
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(let (buffer-swapped-with)
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(kill-all-local-variables)
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(pmail-mode-1)
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(if (boundp 'tool-bar-map)
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(set (make-local-variable 'tool-bar-map) pmail-tool-bar-map))
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(setq buffer-undo-list t)
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(pmail-variables))
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;; If text has really changed, mark message as edited.
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(unless (and (= (length old) (- (point-max) (point-min)))
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(string= old (buffer-substring (point-min) (point-max))))
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(setq old nil)
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(goto-char (point-min))
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(search-forward "\n\n")
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(setq headers-end (point))
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(pmail-swap-buffers-maybe)
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(setq character-coding (mail-fetch-field "content-transfer-encoding")
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is-text-message (pmail-is-text-p)
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coding-system (pmail-get-coding-system))
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(if character-coding
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(setq character-coding (downcase character-coding)))
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(narrow-to-region (pmail-msgbeg pmail-current-message)
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(pmail-msgend pmail-current-message))
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(goto-char (point-min))
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(search-forward "\n\n")
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(let ((inhibit-read-only t)
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(headers-end-1 (point)))
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(insert-buffer-substring pmail-view-buffer headers-end)
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(delete-region (point) (point-max))
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;; Re-encode the message body in whatever
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;; way it was decoded.
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(cond
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((string= character-coding "quoted-printable")
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(mail-quote-printable-region headers-end-1 (point-max)))
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((and (string= character-coding "base64") is-text-message)
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(base64-encode-region headers-end-1 (point-max)))
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((eq character-coding 'uuencode)
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(error "Not supported yet."))
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(t
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(if (or (not coding-system) (not (coding-system-p coding-system)))
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(setq coding-system 'undecided))
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(encode-coding-region headers-end-1 (point-max) coding-system)))
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))
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(pmail-set-attribute pmail-edited-attr-index t)
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;;??? BROKEN perhaps.
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;; I think that the Summary-Line header may not be kept there any more.
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;;; (if (boundp 'pmail-summary-vector)
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;;; (progn
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;;; (aset pmail-summary-vector (1- pmail-current-message) nil)
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;;; (save-excursion
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;;; (pmail-widen-to-current-msgbeg
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;;; (function (lambda ()
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;;; (forward-line 2)
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;;; (if (looking-at "Summary-line: ")
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;;; (let ((buffer-read-only nil))
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;;; (delete-region (point)
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;;; (progn (forward-line 1)
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;;; (point)))))))))))
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)
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(save-excursion
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(pmail-show-message)
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(pmail-toggle-header (if pmail-old-pruned 1 0)))
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(run-hooks 'pmail-mode-hook))
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(defun pmail-abort-edit ()
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"Abort edit of current message; restore original contents."
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(interactive)
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(widen)
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(delete-region (point-min) (point-max))
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(insert pmail-old-text)
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(pmail-cease-edit)
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(pmail-highlight-headers))
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(provide 'pmailedit)
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;; Local Variables:
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;; change-log-default-name: "ChangeLog.pmail"
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;; End:
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;; arch-tag: 9524f335-12cc-4e95-9e9b-3208dc30550b
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;;; pmailedit.el ends here
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