Initial revision

lisp/mail/rmailout.el

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+;; "RMAIL" mail reader for Emacs: output message to a file.
+;; Copyright (C) 1985, 1987 Free Software Foundation, Inc.
+
+;; 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 1, 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; see the file COPYING.  If not, write to
+;; the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+
+
+;; Temporary until Emacs always has this variable.
+(defvar rmail-delete-after-output nil
+  "*Non-nil means automatically delete a message that is copied to a file.")
+
+(defun rmail-output-to-rmail-file (count file-name)
+  "Append the current message to an Rmail file named FILE-NAME.
+If the file does not exist, ask if it should be created.
+If file is being visited, the message is appended to the Emacs
+buffer visiting that file.
+A prefix argument N says to output N consecutive messages
+starting with the current one.  Deleted messages are skipped and don't count."
+  (interactive (list (prefix-numeric-value current-prefix-arg)
+		     (read-file-name
+		      (concat "Output message to Rmail file: (default "
+			      (file-name-nondirectory rmail-last-rmail-file)
+			      ") ")
+		      (file-name-directory rmail-last-rmail-file)
+		      rmail-last-rmail-file)))
+  (setq file-name (expand-file-name file-name))
+  (setq rmail-last-rmail-file file-name)
+  (rmail-maybe-set-message-counters)
+  (or (get-file-buffer file-name)
+      (file-exists-p file-name)
+      (if (yes-or-no-p
+	   (concat "\"" file-name "\" does not exist, create it? "))
+	  (let ((file-buffer (create-file-buffer file-name)))
+	    (save-excursion
+	      (set-buffer file-buffer)
+	      (rmail-insert-rmail-file-header)
+	      (let ((require-final-newline nil))
+		(write-region (point-min) (point-max) file-name t 1)))
+	    (kill-buffer file-buffer))
+	(error "Output file does not exist")))
+  (while (> count 0)
+    (let (redelete)
+      (unwind-protect
+	  (progn
+	    (save-restriction
+	      (widen)
+	      (if (rmail-message-deleted-p rmail-current-message)
+		  (progn (setq redelete t)
+			 (rmail-set-attribute "deleted" nil)))
+	      ;; Decide whether to append to a file or to an Emacs buffer.
+	      (save-excursion
+		(let ((buf (get-file-buffer file-name))
+		      (cur (current-buffer))
+		      (beg (1+ (rmail-msgbeg rmail-current-message)))
+		      (end (1+ (rmail-msgend rmail-current-message))))
+		  (if (not buf)
+		      (append-to-file beg end file-name)
+		    (if (eq buf (current-buffer))
+			(error "Can't output message to same file it's already in"))
+		    ;; File has been visited, in buffer BUF.
+		    (set-buffer buf)
+		    (let ((buffer-read-only nil)
+			  (msg (and (boundp 'rmail-current-message)
+				    rmail-current-message)))
+		      ;; If MSG is non-nil, buffer is in RMAIL mode.
+		      (if msg
+			  (progn
+			    (rmail-maybe-set-message-counters)
+			    (widen)
+			    (narrow-to-region (point-max) (point-max))
+			    (insert-buffer-substring cur beg end)
+			    (goto-char (point-min))
+			    (widen)
+			    (search-backward "\n\^_")
+			    (narrow-to-region (point) (point-max))
+			    (rmail-count-new-messages t)
+			    (rmail-show-message msg))
+	      ;; Output file not in rmail mode => just insert at the end.
+	      (narrow-to-region (point-min) (1+ (buffer-size)))
+	      (goto-char (point-max))
+	      (insert-buffer-substring cur beg end)))))))
+	    (rmail-set-attribute "filed" t))
+	(if redelete (rmail-set-attribute "deleted" t))))
+    (setq count (1- count))
+    (if rmail-delete-after-output
+	(rmail-delete-forward)
+      (if (> count 0)
+	  (rmail-next-undeleted-message 1)))))
+
+(defun rmail-output (count file-name)
+  "Append this message to Unix mail file named FILE-NAME.
+A prefix argument N says to output N consecutive messages
+starting with the current one.  Deleted messages are skipped and don't count."
+  (interactive
+   (list (prefix-numeric-value current-prefix-arg)
+	 (read-file-name
+	  (concat "Output message to Unix mail file"
+		  (if rmail-last-file
+		      (concat " (default "
+			      (file-name-nondirectory rmail-last-file)
+			      "): " )
+		    ": "))			
+	  (and rmail-last-file (file-name-directory rmail-last-file))
+	  rmail-last-file)))
+  (setq file-name (expand-file-name file-name))
+  (setq rmail-last-file file-name)
+  (while (> count 0)
+    (let ((rmailbuf (current-buffer))
+	  (tembuf (get-buffer-create " rmail-output"))
+	  (case-fold-search t))
+      (save-excursion
+	(set-buffer tembuf)
+	(erase-buffer)
+	;; If we can do it, read a little of the file
+	;; to check whether it is an RMAIL file.
+	;; If it is, don't mess it up.
+	(if (fboundp 'insert-partial-file-contents)
+	    (progn
+	      (insert-partial-file-contents file-name 0 20)
+	      (if (looking-at "BABYL OPTIONS:\n")
+		  (error (save-excursion
+			   (set-buffer rmailbuf)
+			   (substitute-command-keys
+			    "File %s is an RMAIL file; use the \\[rmail-output-to-rmail-file] command"))
+			 file-name))
+	      (erase-buffer)))
+	(insert-buffer-substring rmailbuf)
+	(insert "\n")
+	(goto-char (point-min))
+	(insert "From "
+		(mail-strip-quoted-names (or (mail-fetch-field "from")
+					     (mail-fetch-field "really-from")
+					     (mail-fetch-field "sender")
+					     "unknown"))
+		" " (current-time-string) "\n")
+	;; ``Quote'' "\nFrom " as "\n>From "
+	;;  (note that this isn't really quoting, as there is no requirement
+	;;   that "\n[>]+From " be quoted in the same transparent way.)
+	(while (search-forward "\nFrom " nil t)
+	  (forward-char -5)
+	  (insert ?>))
+	(append-to-file (point-min) (point-max) file-name))
+      (kill-buffer tembuf))
+    (if (equal major-mode 'rmail-mode)
+	(rmail-set-attribute "filed" t))
+    (setq count (1- count))
+    (if rmail-delete-after-output
+	(rmail-delete-forward)
+      (if (> count 0)
+	  (rmail-next-undeleted-message 1)))))