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47e77e9f1d
* gnus-util.el (gnus-output-to-rmail): Ditto. (gnus-output-to-mail): Ditto. * nnmail.el (nnmail-pathname-coding-system): Set default to nil.
1750 lines
58 KiB
EmacsLisp
1750 lines
58 KiB
EmacsLisp
;;; nnmail.el --- mail support functions for the Gnus mail backends
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;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000
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;; Free Software Foundation, Inc.
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;; Author: Lars Magne Ingebrigtsen <larsi@gnus.org>
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;; Keywords: news, 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 2, or (at your option)
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;; 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; 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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;;; Commentary:
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;;; Code:
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(eval-when-compile (require 'cl))
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(require 'nnheader)
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(require 'message)
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(require 'custom)
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(require 'gnus-util)
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(require 'mail-source)
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(require 'mm-util)
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(eval-and-compile
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(autoload 'gnus-error "gnus-util")
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(autoload 'gnus-buffer-live-p "gnus-util"))
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(defgroup nnmail nil
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"Reading mail with Gnus."
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:group 'gnus)
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(defgroup nnmail-retrieve nil
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"Retrieving new mail."
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:group 'nnmail)
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(defgroup nnmail-prepare nil
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"Preparing (or mangling) new mail after retrival."
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:group 'nnmail)
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(defgroup nnmail-duplicate nil
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"Handling of duplicate mail messages."
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:group 'nnmail)
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(defgroup nnmail-split nil
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"Organizing the incomming mail in folders."
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:group 'nnmail)
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(defgroup nnmail-files nil
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"Mail files."
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:group 'gnus-files
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:group 'nnmail)
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(defgroup nnmail-expire nil
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"Expiring old mail."
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:group 'nnmail)
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(defgroup nnmail-procmail nil
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"Interfacing with procmail and other mail agents."
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:group 'nnmail)
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(defgroup nnmail-various nil
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"Various mail options."
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:group 'nnmail)
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(defcustom nnmail-split-methods
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'(("mail.misc" ""))
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"*Incoming mail will be split according to this variable.
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If you'd like, for instance, one mail group for mail from the
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\"4ad-l\" mailing list, one group for junk mail and one for everything
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else, you could do something like this:
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(setq nnmail-split-methods
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'((\"mail.4ad\" \"From:.*4ad\")
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(\"mail.junk\" \"From:.*Lars\\\\|Subject:.*buy\")
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(\"mail.misc\" \"\")))
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As you can see, this variable is a list of lists, where the first
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element in each \"rule\" is the name of the group (which, by the way,
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does not have to be called anything beginning with \"mail\",
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\"yonka.zow\" is a fine, fine name), and the second is a regexp that
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nnmail will try to match on the header to find a fit.
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The second element can also be a function. In that case, it will be
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called narrowed to the headers with the first element of the rule as
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the argument. It should return a non-nil value if it thinks that the
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mail belongs in that group.
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The last element should always have \"\" as the regexp.
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This variable can also have a function as its value."
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:group 'nnmail-split
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:type '(choice (repeat :tag "Alist" (group (string :tag "Name") regexp))
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(function-item nnmail-split-fancy)
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(function :tag "Other")))
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;; Suggested by Erik Selberg <speed@cs.washington.edu>.
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(defcustom nnmail-crosspost t
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"If non-nil, do crossposting if several split methods match the mail.
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If nil, the first match found will be used."
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:group 'nnmail-split
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:type 'boolean)
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;; Added by gord@enci.ucalgary.ca (Gordon Matzigkeit).
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(defcustom nnmail-keep-last-article nil
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"If non-nil, nnmail will never delete/move a group's last article.
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It can be marked expirable, so it will be deleted when it is no longer last.
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You may need to set this variable if other programs are putting
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new mail into folder numbers that Gnus has marked as expired."
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:group 'nnmail-procmail
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:group 'nnmail-various
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:type 'boolean)
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(defcustom nnmail-use-long-file-names nil
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"If non-nil the mail backends will use long file and directory names.
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If nil, groups like \"mail.misc\" will end up in directories like
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\"mail/misc/\"."
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:group 'nnmail-files
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:type 'boolean)
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(defcustom nnmail-default-file-modes 384
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"Set the mode bits of all new mail files to this integer."
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:group 'nnmail-files
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:type 'integer)
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(defcustom nnmail-expiry-wait 7
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"*Expirable articles that are older than this will be expired.
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This variable can either be a number (which will be interpreted as a
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number of days) -- this doesn't have to be an integer. This variable
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can also be `immediate' and `never'."
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:group 'nnmail-expire
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:type '(choice (const immediate)
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(integer :tag "days")
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(const never)))
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(defcustom nnmail-expiry-wait-function nil
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"Variable that holds function to specify how old articles should be before they are expired.
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The function will be called with the name of the group that the
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expiry is to be performed in, and it should return an integer that
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says how many days an article can be stored before it is considered
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\"old\". It can also return the values `never' and `immediate'.
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Eg.:
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\(setq nnmail-expiry-wait-function
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(lambda (newsgroup)
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(cond ((string-match \"private\" newsgroup) 31)
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((string-match \"junk\" newsgroup) 1)
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((string-match \"important\" newsgroup) 'never)
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(t 7))))"
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:group 'nnmail-expire
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:type '(choice (const :tag "nnmail-expiry-wait" nil)
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(function :format "%v" nnmail-)))
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(defcustom nnmail-expiry-target 'delete
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"*Variable that says where expired messages should end up.
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The default value is `delete' (which says to delete the messages),
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but it can also be a string or a function. If it is a string, expired
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messages end up in that group. If it is a function, the function is
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called in a buffer narrowed to the message in question. The function
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receives one argument, the name of the group the message comes from.
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The return value should be `delete' or a group name (a string)."
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:version "21.1"
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:group 'nnmail-expire
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:type '(choice (const delete)
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(function :format "%v" nnmail-)
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string))
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(defcustom nnmail-cache-accepted-message-ids nil
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"If non-nil, put Message-IDs of Gcc'd articles into the duplicate cache."
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:group 'nnmail
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:type 'boolean)
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(defcustom nnmail-spool-file '((file))
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"*Where the mail backends will look for incoming mail.
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This variable is a list of mail source specifiers.
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This variable is obsolete; `mail-sources' should be used instead."
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:group 'nnmail-files
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:type 'sexp)
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(defcustom nnmail-resplit-incoming nil
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"*If non-nil, re-split incoming procmail sorted mail."
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:group 'nnmail-procmail
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:type 'boolean)
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(defcustom nnmail-scan-directory-mail-source-once nil
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"*If non-nil, scan all incoming procmail sorted mails once.
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It scans low-level sorted spools even when not required."
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:version "21.1"
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:group 'nnmail-procmail
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:type 'boolean)
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(defcustom nnmail-delete-file-function 'delete-file
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"Function called to delete files in some mail backends."
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:group 'nnmail-files
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:type 'function)
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(defcustom nnmail-crosspost-link-function
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(if (string-match "windows-nt\\|emx" (symbol-name system-type))
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'copy-file
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'add-name-to-file)
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"*Function called to create a copy of a file.
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This is `add-name-to-file' by default, which means that crossposts
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will use hard links. If your file system doesn't allow hard
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links, you could set this variable to `copy-file' instead."
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:group 'nnmail-files
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:type '(radio (function-item add-name-to-file)
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(function-item copy-file)
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(function :tag "Other")))
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(defcustom nnmail-read-incoming-hook
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(if (eq system-type 'windows-nt)
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'(nnheader-ms-strip-cr)
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nil)
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"*Hook that will be run after the incoming mail has been transferred.
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The incoming mail is moved from the specified spool file (which normally is
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something like \"/usr/spool/mail/$user\") to the user's home
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directory. This hook is called after the incoming mail box has been
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emptied, and can be used to call any mail box programs you have
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running (\"xwatch\", etc.)
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Eg.
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\(add-hook 'nnmail-read-incoming-hook
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(lambda ()
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(call-process \"/local/bin/mailsend\" nil nil nil
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\"read\" nnmail-spool-file)))
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If you have xwatch running, this will alert it that mail has been
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read.
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If you use `display-time', you could use something like this:
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\(add-hook 'nnmail-read-incoming-hook
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(lambda ()
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;; Update the displayed time, since that will clear out
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;; the flag that says you have mail.
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(when (eq (process-status \"display-time\") 'run)
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(display-time-filter display-time-process \"\"))))"
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:group 'nnmail-prepare
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:type 'hook)
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(defcustom nnmail-prepare-incoming-hook nil
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"Hook called before treating incoming mail.
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The hook is run in a buffer with all the new, incoming mail."
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:group 'nnmail-prepare
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:type 'hook)
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(defcustom nnmail-prepare-incoming-header-hook nil
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"Hook called narrowed to the headers of each message.
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This can be used to remove excessive spaces (and stuff like
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that) from the headers before splitting and saving the messages."
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:group 'nnmail-prepare
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:type 'hook)
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(defcustom nnmail-prepare-incoming-message-hook nil
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"Hook called narrowed to each message."
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:group 'nnmail-prepare
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:type 'hook)
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(defcustom nnmail-list-identifiers nil
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"Regexp that matches list identifiers to be removed.
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This can also be a list of regexps."
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:group 'nnmail-prepare
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:type '(choice (const :tag "none" nil)
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(regexp :value ".*")
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(repeat :value (".*") regexp)))
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(defcustom nnmail-pre-get-new-mail-hook nil
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"Hook called just before starting to handle new incoming mail."
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:group 'nnmail-retrieve
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:type 'hook)
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(defcustom nnmail-post-get-new-mail-hook nil
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"Hook called just after finishing handling new incoming mail."
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:group 'nnmail-retrieve
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:type 'hook)
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(defcustom nnmail-split-hook nil
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"Hook called before deciding where to split an article.
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The functions in this hook are free to modify the buffer
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contents in any way they choose -- the buffer contents are
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discarded after running the split process."
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:group 'nnmail-split
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:type 'hook)
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(defcustom nnmail-large-newsgroup 50
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"*The number of the articles which indicates a large newsgroup.
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If the number of the articles is greater than the value, verbose
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messages will be shown to indicate the current status."
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:group 'nnmail-various
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:type 'integer)
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(defcustom nnmail-split-fancy "mail.misc"
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"Incoming mail can be split according to this fancy variable.
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To enable this, set `nnmail-split-methods' to `nnmail-split-fancy'.
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The format of this variable is SPLIT, where SPLIT can be one of
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the following:
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GROUP: Mail will be stored in GROUP (a string).
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\(FIELD VALUE [- RESTRICT [- RESTRICT [...]]] SPLIT): If the message
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field FIELD (a regexp) contains VALUE (a regexp), store the messages
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as specified by SPLIT. If RESTRICT (a regexp) matches some string
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after FIELD and before the end of the matched VALUE, return NIL,
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otherwise process SPLIT. Multiple RESTRICTs add up, further
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restricting the possibility of processing SPLIT.
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\(| SPLIT...): Process each SPLIT expression until one of them matches.
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A SPLIT expression is said to match if it will cause the mail
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message to be stored in one or more groups.
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\(& SPLIT...): Process each SPLIT expression.
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\(: FUNCTION optional args): Call FUNCTION with the optional args, in
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the buffer containing the message headers. The return value FUNCTION
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should be a split, which is then recursively processed.
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\(! FUNCTION SPLIT): Call FUNCTION with the result of SPLIT. The
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return value FUNCTION should be a split, which is then recursively
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processed.
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FIELD must match a complete field name. VALUE must match a complete
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word according to the `nnmail-split-fancy-syntax-table' syntax table.
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You can use \".*\" in the regexps to match partial field names or words.
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FIELD and VALUE can also be lisp symbols, in that case they are expanded
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as specified in `nnmail-split-abbrev-alist'.
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GROUP can contain \\& and \\N which will substitute from matching
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\\(\\) patterns in the previous VALUE.
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Example:
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\(setq nnmail-split-methods 'nnmail-split-fancy
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nnmail-split-fancy
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;; Messages from the mailer daemon are not crossposted to any of
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;; the ordinary groups. Warnings are put in a separate group
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;; from real errors.
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'(| (\"from\" mail (| (\"subject\" \"warn.*\" \"mail.warning\")
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\"mail.misc\"))
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;; Non-error messages are crossposted to all relevant
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;; groups, but we don't crosspost between the group for the
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;; (ding) list and the group for other (ding) related mail.
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(& (| (any \"ding@ifi\\\\.uio\\\\.no\" \"ding.list\")
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(\"subject\" \"ding\" \"ding.misc\"))
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;; Other mailing lists...
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(any \"procmail@informatik\\\\.rwth-aachen\\\\.de\" \"procmail.list\")
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(any \"SmartList@informatik\\\\.rwth-aachen\\\\.de\" \"SmartList.list\")
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;; Both lists below have the same suffix, so prevent
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;; cross-posting to mkpkg.list of messages posted only to
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;; the bugs- list, but allow cross-posting when the
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;; message was really cross-posted.
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(any \"bugs-mypackage@somewhere\" \"mypkg.bugs\")
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(any \"mypackage@somewhere\" - \"bugs-mypackage\" \"mypkg.list\")
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;;
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;; People...
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(any \"larsi@ifi\\\\.uio\\\\.no\" \"people.Lars Magne Ingebrigtsen\"))
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;; Unmatched mail goes to the catch all group.
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\"misc.misc\"))"
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:group 'nnmail-split
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;; Sigh!
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:type 'sexp)
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(defcustom nnmail-split-abbrev-alist
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'((any . "from\\|to\\|cc\\|sender\\|apparently-to\\|resent-from\\|resent-to\\|resent-cc")
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(mail . "mailer-daemon\\|postmaster\\|uucp")
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(to . "to\\|cc\\|apparently-to\\|resent-to\\|resent-cc")
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(from . "from\\|sender\\|resent-from")
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(nato . "to\\|cc\\|resent-to\\|resent-cc")
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(naany . "from\\|to\\|cc\\|sender\\|resent-from\\|resent-to\\|resent-cc"))
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"*Alist of abbreviations allowed in `nnmail-split-fancy'."
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:group 'nnmail-split
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:type '(repeat (cons :format "%v" symbol regexp)))
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(defcustom nnmail-message-id-cache-length 1000
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"*The approximate number of Message-IDs nnmail will keep in its cache.
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If this variable is nil, no checking on duplicate messages will be
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performed."
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:group 'nnmail-duplicate
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:type '(choice (const :tag "disable" nil)
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(integer :format "%v")))
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(defcustom nnmail-message-id-cache-file "~/.nnmail-cache"
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"*The file name of the nnmail Message-ID cache."
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:group 'nnmail-duplicate
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:group 'nnmail-files
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:type 'file)
|
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(defcustom nnmail-treat-duplicates 'warn
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"*If non-nil, nnmail keep a cache of Message-IDs to discover mail duplicates.
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Three values are valid: nil, which means that nnmail is not to keep a
|
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Message-ID cache; `warn', which means that nnmail should insert extra
|
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headers to warn the user about the duplication (this is the default);
|
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and `delete', which means that nnmail will delete duplicated mails.
|
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|
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This variable can also be a function. It will be called from a buffer
|
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narrowed to the article in question with the Message-ID as a
|
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parameter. It should return nil, `warn' or `delete'."
|
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:group 'nnmail-duplicate
|
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:type '(choice (const :tag "off" nil)
|
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(const warn)
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(const delete)))
|
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|
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(defcustom nnmail-extra-headers nil
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"*Extra headers to parse."
|
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:version "21.1"
|
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:group 'nnmail
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:type '(repeat symbol))
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(defcustom nnmail-split-header-length-limit 512
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"Header lines longer than this limit are excluded from the split function."
|
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:version "21.1"
|
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:group 'nnmail
|
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:type 'integer)
|
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;;; Internal variables.
|
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(defvar nnmail-split-history nil
|
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"List of group/article elements that say where the previous split put messages.")
|
||
|
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(defvar nnmail-split-fancy-syntax-table nil
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"Syntax table used by `nnmail-split-fancy'.")
|
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(unless (syntax-table-p nnmail-split-fancy-syntax-table)
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(setq nnmail-split-fancy-syntax-table
|
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(copy-syntax-table (standard-syntax-table)))
|
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;; support the %-hack
|
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(modify-syntax-entry ?\% "." nnmail-split-fancy-syntax-table))
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(defvar nnmail-prepare-save-mail-hook nil
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"Hook called before saving mail.")
|
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(defvar nnmail-split-tracing nil)
|
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(defvar nnmail-split-trace nil)
|
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(defconst nnmail-version "nnmail 1.0"
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"nnmail version.")
|
||
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(defun nnmail-request-post (&optional server)
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(mail-send-and-exit nil))
|
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(defvar nnmail-file-coding-system 'raw-text
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"Coding system used in nnmail.")
|
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|
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(defvar nnmail-incoming-coding-system
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mm-text-coding-system
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"Coding system used in reading inbox")
|
||
|
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(defvar nnmail-pathname-coding-system nil
|
||
"*Coding system for pathname.")
|
||
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(defun nnmail-find-file (file)
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"Insert FILE in server buffer safely."
|
||
(set-buffer nntp-server-buffer)
|
||
(delete-region (point-min) (point-max))
|
||
(let ((format-alist nil)
|
||
(after-insert-file-functions nil))
|
||
(condition-case ()
|
||
(let ((coding-system-for-read nnmail-file-coding-system)
|
||
(auto-mode-alist (mm-auto-mode-alist))
|
||
(file-name-coding-system nnmail-pathname-coding-system))
|
||
(insert-file-contents file)
|
||
t)
|
||
(file-error nil))))
|
||
|
||
(defun nnmail-group-pathname (group dir &optional file)
|
||
"Make pathname for GROUP."
|
||
(concat
|
||
(let ((dir (file-name-as-directory (expand-file-name dir))))
|
||
(setq group (nnheader-replace-duplicate-chars-in-string
|
||
(nnheader-replace-chars-in-string group ?/ ?_)
|
||
?. ?_))
|
||
(setq group (nnheader-translate-file-chars group))
|
||
;; If this directory exists, we use it directly.
|
||
(file-name-as-directory
|
||
(if (or nnmail-use-long-file-names
|
||
(file-directory-p (concat dir group)))
|
||
(expand-file-name group dir)
|
||
;; If not, we translate dots into slashes.
|
||
(expand-file-name
|
||
(mm-encode-coding-string
|
||
(nnheader-replace-chars-in-string group ?. ?/)
|
||
nnmail-pathname-coding-system)
|
||
dir))))
|
||
(or file "")))
|
||
|
||
(defun nnmail-get-active ()
|
||
"Returns an assoc of group names and active ranges.
|
||
nn*-request-list should have been called before calling this function."
|
||
;; Go through all groups from the active list.
|
||
(save-excursion
|
||
(set-buffer nntp-server-buffer)
|
||
(nnmail-parse-active)))
|
||
|
||
(defun nnmail-parse-active ()
|
||
"Parse the active file in the current buffer and return an alist."
|
||
(goto-char (point-min))
|
||
(unless (re-search-forward "[\\\"]" nil t)
|
||
(goto-char (point-max))
|
||
(while (re-search-backward "[][';?()#]" nil t)
|
||
(insert ?\\)))
|
||
(goto-char (point-min))
|
||
(let ((buffer (current-buffer))
|
||
group-assoc group max min)
|
||
(while (not (eobp))
|
||
(condition-case err
|
||
(progn
|
||
(narrow-to-region (point) (gnus-point-at-eol))
|
||
(setq group (read buffer))
|
||
(unless (stringp group)
|
||
(setq group (symbol-name group)))
|
||
(if (and (numberp (setq max (read nntp-server-buffer)))
|
||
(numberp (setq min (read nntp-server-buffer))))
|
||
(push (list group (cons min max))
|
||
group-assoc)))
|
||
(error nil))
|
||
(widen)
|
||
(forward-line 1))
|
||
group-assoc))
|
||
|
||
(defvar nnmail-active-file-coding-system 'raw-text
|
||
"*Coding system for active file.")
|
||
|
||
(defun nnmail-save-active (group-assoc file-name)
|
||
"Save GROUP-ASSOC in ACTIVE-FILE."
|
||
(let ((coding-system-for-write nnmail-active-file-coding-system))
|
||
(when file-name
|
||
(with-temp-file file-name
|
||
(nnmail-generate-active group-assoc)))))
|
||
|
||
(defun nnmail-generate-active (alist)
|
||
"Generate an active file from group-alist ALIST."
|
||
(erase-buffer)
|
||
(let (group)
|
||
(while (setq group (pop alist))
|
||
(insert (format "%S %d %d y\n" (intern (car group)) (cdadr group)
|
||
(caadr group))))
|
||
(goto-char (point-max))
|
||
(while (search-backward "\\." nil t)
|
||
(delete-char 1))))
|
||
|
||
(defun nnmail-get-split-group (file source)
|
||
"Find out whether this FILE is to be split into GROUP only.
|
||
If SOURCE is a directory spec, try to return the group name component."
|
||
(if (eq (car source) 'directory)
|
||
(let ((file (file-name-nondirectory file)))
|
||
(mail-source-bind (directory source)
|
||
(if (string-match (concat (regexp-quote suffix) "$") file)
|
||
(substring file 0 (match-beginning 0))
|
||
nil)))
|
||
nil))
|
||
|
||
(defun nnmail-process-babyl-mail-format (func artnum-func)
|
||
(let ((case-fold-search t)
|
||
(count 0)
|
||
start message-id content-length do-search end)
|
||
(while (not (eobp))
|
||
(goto-char (point-min))
|
||
(re-search-forward
|
||
" \n0, *unseen,+\n\\(\\*\\*\\* EOOH \\*\\*\\*\n\\)?" nil t)
|
||
(goto-char (match-end 0))
|
||
(delete-region (match-beginning 0) (match-end 0))
|
||
(narrow-to-region
|
||
(setq start (point))
|
||
(progn
|
||
;; Skip all the headers in case there are more "From "s...
|
||
(or (search-forward "\n\n" nil t)
|
||
(search-forward-regexp "^[^:]*\\( .*\\|\\)$" nil t)
|
||
(search-forward " "))
|
||
(point)))
|
||
;; Unquote the ">From " line, if any.
|
||
(goto-char (point-min))
|
||
(when (looking-at ">From ")
|
||
(replace-match "X-From-Line: ") )
|
||
(run-hooks 'nnmail-prepare-incoming-header-hook)
|
||
(goto-char (point-max))
|
||
;; Find the Message-ID header.
|
||
(save-excursion
|
||
(if (re-search-backward
|
||
"^Message-ID[ \t]*:[ \n\t]*\\(<[^>]*>\\)" nil t)
|
||
(setq message-id (buffer-substring (match-beginning 1)
|
||
(match-end 1)))
|
||
;; There is no Message-ID here, so we create one.
|
||
(save-excursion
|
||
(when (re-search-backward "^Message-ID[ \t]*:" nil t)
|
||
(beginning-of-line)
|
||
(insert "Original-")))
|
||
(forward-line -1)
|
||
(insert "Message-ID: " (setq message-id (nnmail-message-id))
|
||
"\n")))
|
||
;; Look for a Content-Length header.
|
||
(if (not (save-excursion
|
||
(and (re-search-backward
|
||
"^Content-Length:[ \t]*\\([0-9]+\\)" start t)
|
||
(setq content-length (string-to-int
|
||
(buffer-substring
|
||
(match-beginning 1)
|
||
(match-end 1))))
|
||
;; We destroy the header, since none of
|
||
;; the backends ever use it, and we do not
|
||
;; want to confuse other mailers by having
|
||
;; a (possibly) faulty header.
|
||
(progn (insert "X-") t))))
|
||
(setq do-search t)
|
||
(widen)
|
||
(if (or (= (+ (point) content-length) (point-max))
|
||
(save-excursion
|
||
(goto-char (+ (point) content-length))
|
||
(looking-at " ")))
|
||
(progn
|
||
(goto-char (+ (point) content-length))
|
||
(setq do-search nil))
|
||
(setq do-search t)))
|
||
(widen)
|
||
;; Go to the beginning of the next article - or to the end
|
||
;; of the buffer.
|
||
(when do-search
|
||
(if (re-search-forward "^ " nil t)
|
||
(goto-char (match-beginning 0))
|
||
(goto-char (1- (point-max)))))
|
||
(delete-char 1) ; delete ^_
|
||
(save-excursion
|
||
(save-restriction
|
||
(narrow-to-region start (point))
|
||
(goto-char (point-min))
|
||
(nnmail-check-duplication message-id func artnum-func)
|
||
(incf count)
|
||
(setq end (point-max))))
|
||
(goto-char end))
|
||
count))
|
||
|
||
(defsubst nnmail-search-unix-mail-delim ()
|
||
"Put point at the beginning of the next Unix mbox message."
|
||
;; Algorithm used to find the the next article in the
|
||
;; brain-dead Unix mbox format:
|
||
;;
|
||
;; 1) Search for "^From ".
|
||
;; 2) If we find it, then see whether the previous
|
||
;; line is blank and the next line looks like a header.
|
||
;; Then it's possible that this is a mail delim, and we use it.
|
||
(let ((case-fold-search nil)
|
||
found)
|
||
(while (not found)
|
||
(if (not (re-search-forward "^From " nil t))
|
||
(setq found 'no)
|
||
(save-excursion
|
||
(beginning-of-line)
|
||
(when (and (or (bobp)
|
||
(save-excursion
|
||
(forward-line -1)
|
||
(eq (char-after) ?\n)))
|
||
(save-excursion
|
||
(forward-line 1)
|
||
(while (looking-at ">From \\|From ")
|
||
(forward-line 1))
|
||
(looking-at "[^ \n\t:]+[ \n\t]*:")))
|
||
(setq found 'yes)))))
|
||
(beginning-of-line)
|
||
(eq found 'yes)))
|
||
|
||
(defun nnmail-search-unix-mail-delim-backward ()
|
||
"Put point at the beginning of the current Unix mbox message."
|
||
;; Algorithm used to find the the next article in the
|
||
;; brain-dead Unix mbox format:
|
||
;;
|
||
;; 1) Search for "^From ".
|
||
;; 2) If we find it, then see whether the previous
|
||
;; line is blank and the next line looks like a header.
|
||
;; Then it's possible that this is a mail delim, and we use it.
|
||
(let ((case-fold-search nil)
|
||
found)
|
||
(while (not found)
|
||
(if (not (re-search-backward "^From " nil t))
|
||
(setq found 'no)
|
||
(save-excursion
|
||
(beginning-of-line)
|
||
(when (and (or (bobp)
|
||
(save-excursion
|
||
(forward-line -1)
|
||
(eq (char-after) ?\n)))
|
||
(save-excursion
|
||
(forward-line 1)
|
||
(while (looking-at ">From \\|From ")
|
||
(forward-line 1))
|
||
(looking-at "[^ \n\t:]+[ \n\t]*:")))
|
||
(setq found 'yes)))))
|
||
(beginning-of-line)
|
||
(eq found 'yes)))
|
||
|
||
(defun nnmail-process-unix-mail-format (func artnum-func)
|
||
(let ((case-fold-search t)
|
||
(count 0)
|
||
start message-id content-length end skip head-end)
|
||
(goto-char (point-min))
|
||
(if (not (and (re-search-forward "^From " nil t)
|
||
(goto-char (match-beginning 0))))
|
||
;; Possibly wrong format?
|
||
(error "Error, unknown mail format! (Possibly corrupted.)")
|
||
;; Carry on until the bitter end.
|
||
(while (not (eobp))
|
||
(setq start (point)
|
||
end nil)
|
||
;; Find the end of the head.
|
||
(narrow-to-region
|
||
start
|
||
(if (search-forward "\n\n" nil t)
|
||
(1- (point))
|
||
;; This will never happen, but just to be on the safe side --
|
||
;; if there is no head-body delimiter, we search a bit manually.
|
||
(while (and (looking-at "From \\|[^ \t]+:")
|
||
(not (eobp)))
|
||
(forward-line 1))
|
||
(point)))
|
||
;; Find the Message-ID header.
|
||
(goto-char (point-min))
|
||
(if (re-search-forward "^Message-ID[ \t]*:[ \n\t]*\\(<[^>]+>\\)" nil t)
|
||
(setq message-id (match-string 1))
|
||
(save-excursion
|
||
(when (re-search-forward "^Message-ID[ \t]*:" nil t)
|
||
(beginning-of-line)
|
||
(insert "Original-")))
|
||
;; There is no Message-ID here, so we create one.
|
||
(forward-line 1)
|
||
(insert "Message-ID: " (setq message-id (nnmail-message-id)) "\n"))
|
||
;; Look for a Content-Length header.
|
||
(goto-char (point-min))
|
||
(if (not (re-search-forward
|
||
"^Content-Length:[ \t]*\\([0-9]+\\)" nil t))
|
||
(setq content-length nil)
|
||
(setq content-length (string-to-int (match-string 1)))
|
||
;; We destroy the header, since none of the backends ever
|
||
;; use it, and we do not want to confuse other mailers by
|
||
;; having a (possibly) faulty header.
|
||
(beginning-of-line)
|
||
(insert "X-"))
|
||
(run-hooks 'nnmail-prepare-incoming-header-hook)
|
||
;; Find the end of this article.
|
||
(goto-char (point-max))
|
||
(widen)
|
||
(setq head-end (point))
|
||
;; We try the Content-Length value. The idea: skip over the header
|
||
;; separator, then check what happens content-length bytes into the
|
||
;; message body. This should be either the end ot the buffer, the
|
||
;; message separator or a blank line followed by the separator.
|
||
;; The blank line should probably be deleted. If neither of the
|
||
;; three is met, the content-length header is probably invalid.
|
||
(when content-length
|
||
(forward-line 1)
|
||
(setq skip (+ (point) content-length))
|
||
(goto-char skip)
|
||
(cond ((or (= skip (point-max))
|
||
(= (1+ skip) (point-max)))
|
||
(setq end (point-max)))
|
||
((looking-at "From ")
|
||
(setq end skip))
|
||
((looking-at "[ \t]*\n\\(From \\)")
|
||
(setq end (match-beginning 1)))
|
||
(t (setq end nil))))
|
||
(if end
|
||
(goto-char end)
|
||
;; No Content-Length, so we find the beginning of the next
|
||
;; article or the end of the buffer.
|
||
(goto-char head-end)
|
||
(or (nnmail-search-unix-mail-delim)
|
||
(goto-char (point-max))))
|
||
;; Allow the backend to save the article.
|
||
(save-excursion
|
||
(save-restriction
|
||
(narrow-to-region start (point))
|
||
(goto-char (point-min))
|
||
(incf count)
|
||
(nnmail-check-duplication message-id func artnum-func)
|
||
(setq end (point-max))))
|
||
(goto-char end)))
|
||
count))
|
||
|
||
(defun nnmail-process-mmdf-mail-format (func artnum-func)
|
||
(let ((delim "^\^A\^A\^A\^A$")
|
||
(case-fold-search t)
|
||
(count 0)
|
||
start message-id end)
|
||
(goto-char (point-min))
|
||
(if (not (and (re-search-forward delim nil t)
|
||
(forward-line 1)))
|
||
;; Possibly wrong format?
|
||
(error "Error, unknown mail format! (Possibly corrupted.)")
|
||
;; Carry on until the bitter end.
|
||
(while (not (eobp))
|
||
(setq start (point))
|
||
;; Find the end of the head.
|
||
(narrow-to-region
|
||
start
|
||
(if (search-forward "\n\n" nil t)
|
||
(1- (point))
|
||
;; This will never happen, but just to be on the safe side --
|
||
;; if there is no head-body delimiter, we search a bit manually.
|
||
(while (and (looking-at "From \\|[^ \t]+:")
|
||
(not (eobp)))
|
||
(forward-line 1))
|
||
(point)))
|
||
;; Find the Message-ID header.
|
||
(goto-char (point-min))
|
||
(if (re-search-forward "^Message-ID[ \t]*:[ \n\t]*\\(<[^>]+>\\)" nil t)
|
||
(setq message-id (match-string 1))
|
||
;; There is no Message-ID here, so we create one.
|
||
(save-excursion
|
||
(when (re-search-backward "^Message-ID[ \t]*:" nil t)
|
||
(beginning-of-line)
|
||
(insert "Original-")))
|
||
(forward-line 1)
|
||
(insert "Message-ID: " (setq message-id (nnmail-message-id)) "\n"))
|
||
(run-hooks 'nnmail-prepare-incoming-header-hook)
|
||
;; Find the end of this article.
|
||
(goto-char (point-max))
|
||
(widen)
|
||
(if (re-search-forward delim nil t)
|
||
(beginning-of-line)
|
||
(goto-char (point-max)))
|
||
;; Allow the backend to save the article.
|
||
(save-excursion
|
||
(save-restriction
|
||
(narrow-to-region start (point))
|
||
(goto-char (point-min))
|
||
(incf count)
|
||
(nnmail-check-duplication message-id func artnum-func)
|
||
(setq end (point-max))))
|
||
(goto-char end)
|
||
(forward-line 2)))
|
||
count))
|
||
|
||
(defun nnmail-process-maildir-mail-format (func artnum-func)
|
||
;; In a maildir, every file contains exactly one mail.
|
||
(let ((case-fold-search t)
|
||
message-id)
|
||
(goto-char (point-min))
|
||
;; Find the end of the head.
|
||
(narrow-to-region
|
||
(point-min)
|
||
(if (search-forward "\n\n" nil t)
|
||
(1- (point))
|
||
;; This will never happen, but just to be on the safe side --
|
||
;; if there is no head-body delimiter, we search a bit manually.
|
||
(while (and (looking-at "From \\|[^ \t]+:")
|
||
(not (eobp)))
|
||
(forward-line 1))
|
||
(point)))
|
||
;; Find the Message-ID header.
|
||
(goto-char (point-min))
|
||
(if (re-search-forward "^Message-ID:[ \t]*\\(<[^>]+>\\)" nil t)
|
||
(setq message-id (match-string 1))
|
||
;; There is no Message-ID here, so we create one.
|
||
(save-excursion
|
||
(when (re-search-backward "^Message-ID[ \t]*:" nil t)
|
||
(beginning-of-line)
|
||
(insert "Original-")))
|
||
(forward-line 1)
|
||
(insert "Message-ID: " (setq message-id (nnmail-message-id)) "\n"))
|
||
(run-hooks 'nnmail-prepare-incoming-header-hook)
|
||
;; Allow the backend to save the article.
|
||
(widen)
|
||
(save-excursion
|
||
(goto-char (point-min))
|
||
(nnmail-check-duplication message-id func artnum-func))
|
||
1))
|
||
|
||
(defun nnmail-split-incoming (incoming func &optional exit-func
|
||
group artnum-func)
|
||
"Go through the entire INCOMING file and pick out each individual mail.
|
||
FUNC will be called with the buffer narrowed to each mail."
|
||
(let (;; If this is a group-specific split, we bind the split
|
||
;; methods to just this group.
|
||
(nnmail-split-methods (if (and group
|
||
(not nnmail-resplit-incoming))
|
||
(list (list group ""))
|
||
nnmail-split-methods)))
|
||
(save-excursion
|
||
;; Insert the incoming file.
|
||
(set-buffer (get-buffer-create " *nnmail incoming*"))
|
||
(erase-buffer)
|
||
(let ((coding-system-for-read nnmail-incoming-coding-system))
|
||
(mm-insert-file-contents incoming))
|
||
(prog1
|
||
(if (zerop (buffer-size))
|
||
0
|
||
(goto-char (point-min))
|
||
(save-excursion (run-hooks 'nnmail-prepare-incoming-hook))
|
||
;; Handle both babyl, MMDF and unix mail formats, since
|
||
;; movemail will use the former when fetching from a
|
||
;; mailbox, the latter when fetching from a file.
|
||
(cond ((or (looking-at "\^L")
|
||
(looking-at "BABYL OPTIONS:"))
|
||
(nnmail-process-babyl-mail-format func artnum-func))
|
||
((looking-at "\^A\^A\^A\^A")
|
||
(nnmail-process-mmdf-mail-format func artnum-func))
|
||
((looking-at "Return-Path:")
|
||
(nnmail-process-maildir-mail-format func artnum-func))
|
||
(t
|
||
(nnmail-process-unix-mail-format func artnum-func))))
|
||
(when exit-func
|
||
(funcall exit-func))
|
||
(kill-buffer (current-buffer))))))
|
||
|
||
(defun nnmail-article-group (func &optional trace)
|
||
"Look at the headers and return an alist of groups that match.
|
||
FUNC will be called with the group name to determine the article number."
|
||
(let ((methods nnmail-split-methods)
|
||
(obuf (current-buffer))
|
||
(beg (point-min))
|
||
end group-art method grp)
|
||
(if (and (sequencep methods)
|
||
(= (length methods) 1))
|
||
;; If there is only just one group to put everything in, we
|
||
;; just return a list with just this one method in.
|
||
(setq group-art
|
||
(list (cons (caar methods) (funcall func (caar methods)))))
|
||
;; We do actual comparison.
|
||
(save-excursion
|
||
;; Find headers.
|
||
(goto-char beg)
|
||
(setq end (if (search-forward "\n\n" nil t) (point) (point-max)))
|
||
(set-buffer nntp-server-buffer)
|
||
(erase-buffer)
|
||
;; Copy the headers into the work buffer.
|
||
(insert-buffer-substring obuf beg end)
|
||
;; Fold continuation lines.
|
||
(goto-char (point-min))
|
||
(while (re-search-forward "\\(\r?\n[ \t]+\\)+" nil t)
|
||
(replace-match " " t t))
|
||
;; Nuke pathologically long headers. Since Gnus applies
|
||
;; pathologically complex regexps to the buffer, lines
|
||
;; that are looong will take longer than the Universe's
|
||
;; existence to process.
|
||
(goto-char (point-min))
|
||
(while (not (eobp))
|
||
(unless (< (move-to-column nnmail-split-header-length-limit)
|
||
nnmail-split-header-length-limit)
|
||
(delete-region (point) (progn (end-of-line) (point))))
|
||
(forward-line 1))
|
||
;; Allow washing.
|
||
(goto-char (point-min))
|
||
(run-hooks 'nnmail-split-hook)
|
||
(when (setq nnmail-split-tracing trace)
|
||
(setq nnmail-split-trace nil))
|
||
(if (and (symbolp nnmail-split-methods)
|
||
(fboundp nnmail-split-methods))
|
||
(let ((split
|
||
(condition-case nil
|
||
;; `nnmail-split-methods' is a function, so we
|
||
;; just call this function here and use the
|
||
;; result.
|
||
(or (funcall nnmail-split-methods)
|
||
'("bogus"))
|
||
(error
|
||
(nnheader-message 5
|
||
"Error in `nnmail-split-methods'; using `bogus' mail group")
|
||
(sit-for 1)
|
||
'("bogus")))))
|
||
(setq split (gnus-remove-duplicates split))
|
||
;; The article may be "cross-posted" to `junk'. What
|
||
;; to do? Just remove the `junk' spec. Don't really
|
||
;; see anything else to do...
|
||
(let (elem)
|
||
(while (setq elem (car (memq 'junk split)))
|
||
(setq split (delq elem split))))
|
||
(when split
|
||
(setq group-art
|
||
(mapcar
|
||
(lambda (group) (cons group (funcall func group)))
|
||
split))))
|
||
;; Go through the split methods to find a match.
|
||
(while (and methods
|
||
(or nnmail-crosspost
|
||
(not group-art)))
|
||
(goto-char (point-max))
|
||
(setq method (pop methods)
|
||
grp (car method))
|
||
(if (or methods
|
||
(not (equal "" (nth 1 method))))
|
||
(when (and
|
||
(ignore-errors
|
||
(if (stringp (nth 1 method))
|
||
(let ((expand (string-match "\\\\[0-9&]" grp))
|
||
(pos (re-search-backward (cadr method)
|
||
nil t)))
|
||
(and expand
|
||
(setq grp (nnmail-expand-newtext grp)))
|
||
pos)
|
||
;; Function to say whether this is a match.
|
||
(funcall (nth 1 method) grp)))
|
||
;; Don't enter the article into the same
|
||
;; group twice.
|
||
(not (assoc grp group-art)))
|
||
(push (cons grp (funcall func grp))
|
||
group-art))
|
||
;; This is the final group, which is used as a
|
||
;; catch-all.
|
||
(unless group-art
|
||
(setq group-art
|
||
(list (cons (car method)
|
||
(funcall func (car method)))))))))
|
||
;; Produce a trace if non-empty.
|
||
(when (and trace nnmail-split-trace)
|
||
(let ((trace (nreverse nnmail-split-trace))
|
||
(restore (current-buffer)))
|
||
(nnheader-set-temp-buffer "*Split Trace*")
|
||
(gnus-add-buffer)
|
||
(while trace
|
||
(insert (car trace) "\n")
|
||
(setq trace (cdr trace)))
|
||
(goto-char (point-min))
|
||
(gnus-configure-windows 'split-trace)
|
||
(set-buffer restore)))
|
||
;; See whether the split methods returned `junk'.
|
||
(if (equal group-art '(junk))
|
||
nil
|
||
;; The article may be "cross-posted" to `junk'. What
|
||
;; to do? Just remove the `junk' spec. Don't really
|
||
;; see anything else to do...
|
||
(let (elem)
|
||
(while (setq elem (car (memq 'junk group-art)))
|
||
(setq group-art (delq elem group-art)))
|
||
(nreverse group-art)))))))
|
||
|
||
(defun nnmail-insert-lines ()
|
||
"Insert how many lines there are in the body of the mail.
|
||
Return the number of characters in the body."
|
||
(let (lines chars)
|
||
(save-excursion
|
||
(goto-char (point-min))
|
||
(unless (search-forward "\n\n" nil t)
|
||
(goto-char (point-max))
|
||
(insert "\n"))
|
||
(setq chars (- (point-max) (point)))
|
||
(setq lines (count-lines (point) (point-max)))
|
||
(forward-char -1)
|
||
(save-excursion
|
||
(when (re-search-backward "^Lines: " nil t)
|
||
(delete-region (point) (progn (forward-line 1) (point)))))
|
||
(beginning-of-line)
|
||
(insert (format "Lines: %d\n" (max lines 0)))
|
||
chars)))
|
||
|
||
(defun nnmail-insert-xref (group-alist)
|
||
"Insert an Xref line based on the (group . article) alist."
|
||
(save-excursion
|
||
(goto-char (point-min))
|
||
(unless (search-forward "\n\n" nil t)
|
||
(goto-char (point-max))
|
||
(insert "\n"))
|
||
(forward-char -1)
|
||
(when (re-search-backward "^Xref: " nil t)
|
||
(delete-region (match-beginning 0)
|
||
(progn (forward-line 1) (point))))
|
||
(insert (format "Xref: %s" (system-name)))
|
||
(while group-alist
|
||
(insert (format " %s:%d"
|
||
(mm-encode-coding-string
|
||
(caar group-alist)
|
||
nnmail-pathname-coding-system)
|
||
(cdar group-alist)))
|
||
(setq group-alist (cdr group-alist)))
|
||
(insert "\n")))
|
||
|
||
;;; Message washing functions
|
||
|
||
(defun nnmail-remove-leading-whitespace ()
|
||
"Remove excessive whitespace from all headers."
|
||
(goto-char (point-min))
|
||
(while (re-search-forward "^\\([^ :]+: \\) +" nil t)
|
||
(replace-match "\\1" t)))
|
||
|
||
(defun nnmail-remove-list-identifiers ()
|
||
"Remove list identifiers from Subject headers."
|
||
(let ((regexp (if (stringp nnmail-list-identifiers) nnmail-list-identifiers
|
||
(mapconcat 'identity nnmail-list-identifiers " *\\|"))))
|
||
(when regexp
|
||
(goto-char (point-min))
|
||
(when (re-search-forward
|
||
(concat "^Subject: +\\(Re: +\\)?\\(" regexp " *\\)")
|
||
nil t)
|
||
(delete-region (match-beginning 2) (match-end 0))))))
|
||
|
||
(defun nnmail-remove-tabs ()
|
||
"Translate TAB characters into SPACE characters."
|
||
(subst-char-in-region (point-min) (point-max) ?\t ? t))
|
||
|
||
(defun nnmail-fix-eudora-headers ()
|
||
"Eudora has a broken References line, but an OK In-Reply-To."
|
||
(goto-char (point-min))
|
||
(when (re-search-forward "^X-Mailer:.*Eudora" nil t)
|
||
(goto-char (point-min))
|
||
(when (re-search-forward "^References:" nil t)
|
||
(beginning-of-line)
|
||
(insert "X-Gnus-Broken-Eudora-"))
|
||
(goto-char (point-min))
|
||
(when (re-search-forward "^In-Reply-To:[^\n]+\\(\n[ \t]+\\)" nil t)
|
||
(replace-match "" t t nil 1))))
|
||
|
||
(custom-add-option 'nnmail-prepare-incoming-header-hook
|
||
'nnmail-fix-eudora-headers)
|
||
|
||
;;; Utility functions
|
||
|
||
(defun nnmail-split-fancy ()
|
||
"Fancy splitting method.
|
||
See the documentation for the variable `nnmail-split-fancy' for documentation."
|
||
(let ((syntab (syntax-table)))
|
||
(unwind-protect
|
||
(progn
|
||
(set-syntax-table nnmail-split-fancy-syntax-table)
|
||
(nnmail-split-it nnmail-split-fancy))
|
||
(set-syntax-table syntab))))
|
||
|
||
(defvar nnmail-split-cache nil)
|
||
;; Alist of split expressions their equivalent regexps.
|
||
|
||
(defun nnmail-split-it (split)
|
||
;; Return a list of groups matching SPLIT.
|
||
(let (cached-pair)
|
||
(cond
|
||
;; nil split
|
||
((null split)
|
||
nil)
|
||
|
||
;; A group name. Do the \& and \N subs into the string.
|
||
((stringp split)
|
||
(when nnmail-split-tracing
|
||
(push (format "\"%s\"" split) nnmail-split-trace))
|
||
(list (nnmail-expand-newtext split)))
|
||
|
||
;; Junk the message.
|
||
((eq split 'junk)
|
||
(when nnmail-split-tracing
|
||
(push "junk" nnmail-split-trace))
|
||
(list 'junk))
|
||
|
||
;; Builtin & operation.
|
||
((eq (car split) '&)
|
||
(apply 'nconc (mapcar 'nnmail-split-it (cdr split))))
|
||
|
||
;; Builtin | operation.
|
||
((eq (car split) '|)
|
||
(let (done)
|
||
(while (and (not done) (cdr split))
|
||
(setq split (cdr split)
|
||
done (nnmail-split-it (car split))))
|
||
done))
|
||
|
||
;; Builtin : operation.
|
||
((eq (car split) ':)
|
||
(nnmail-split-it (save-excursion (eval (cdr split)))))
|
||
|
||
;; Builtin ! operation.
|
||
((eq (car split) '!)
|
||
(funcall (cadr split) (nnmail-split-it (caddr split))))
|
||
|
||
;; Check the cache for the regexp for this split.
|
||
((setq cached-pair (assq split nnmail-split-cache))
|
||
(let (split-result
|
||
(end-point (point-max))
|
||
(value (nth 1 split)))
|
||
(if (symbolp value)
|
||
(setq value (cdr (assq value nnmail-split-abbrev-alist))))
|
||
(while (and (goto-char end-point)
|
||
(re-search-backward (cdr cached-pair) nil t))
|
||
(when nnmail-split-tracing
|
||
(push (cdr cached-pair) nnmail-split-trace))
|
||
(let ((split-rest (cddr split))
|
||
(end (match-end 0))
|
||
;; The searched regexp is \(\(FIELD\).*\)\(VALUE\). So,
|
||
;; start-of-value is the the point just before the
|
||
;; beginning of the value, whereas after-header-name is
|
||
;; the point just after the field name.
|
||
(start-of-value (match-end 1))
|
||
(after-header-name (match-end 2)))
|
||
;; Start the next search just before the beginning of the
|
||
;; VALUE match.
|
||
(setq end-point (1- start-of-value))
|
||
;; Handle - RESTRICTs
|
||
(while (eq (car split-rest) '-)
|
||
;; RESTRICT must start after-header-name and
|
||
;; end after start-of-value, so that, for
|
||
;; (any "foo" - "x-foo" "foo.list")
|
||
;; we do not exclude foo.list just because
|
||
;; the header is: ``To: x-foo, foo''
|
||
(goto-char end)
|
||
(if (and (re-search-backward (cadr split-rest)
|
||
after-header-name t)
|
||
(> (match-end 0) start-of-value))
|
||
(setq split-rest nil)
|
||
(setq split-rest (cddr split-rest))))
|
||
(when split-rest
|
||
(goto-char end)
|
||
(let ((value (nth 1 split)))
|
||
(if (symbolp value)
|
||
(setq value (cdr (assq value nnmail-split-abbrev-alist))))
|
||
;; Someone might want to do a \N sub on this match, so get the
|
||
;; correct match positions.
|
||
(re-search-backward value start-of-value))
|
||
(dolist (sp (nnmail-split-it (car split-rest)))
|
||
(unless (memq sp split-result)
|
||
(push sp split-result))))))
|
||
split-result))
|
||
|
||
;; Not in cache, compute a regexp for the field/value pair.
|
||
(t
|
||
(let* ((field (nth 0 split))
|
||
(value (nth 1 split))
|
||
partial regexp)
|
||
(if (symbolp value)
|
||
(setq value (cdr (assq value nnmail-split-abbrev-alist))))
|
||
(if (and (>= (length value) 2)
|
||
(string= ".*" (substring value 0 2)))
|
||
(setq value (substring value 2)
|
||
partial ""))
|
||
(setq regexp (concat "^\\(\\("
|
||
(if (symbolp field)
|
||
(cdr (assq field nnmail-split-abbrev-alist))
|
||
field)
|
||
"\\):.*\\)"
|
||
(or partial "\\<")
|
||
"\\("
|
||
value
|
||
"\\)\\>"))
|
||
(push (cons split regexp) nnmail-split-cache)
|
||
;; Now that it's in the cache, just call nnmail-split-it again
|
||
;; on the same split, which will find it immediately in the cache.
|
||
(nnmail-split-it split))))))
|
||
|
||
(defun nnmail-expand-newtext (newtext)
|
||
(let ((len (length newtext))
|
||
(pos 0)
|
||
c expanded beg N did-expand)
|
||
(while (< pos len)
|
||
(setq beg pos)
|
||
(while (and (< pos len)
|
||
(not (= (aref newtext pos) ?\\)))
|
||
(setq pos (1+ pos)))
|
||
(unless (= beg pos)
|
||
(push (substring newtext beg pos) expanded))
|
||
(when (< pos len)
|
||
;; We hit a \; expand it.
|
||
(setq did-expand t
|
||
pos (1+ pos)
|
||
c (aref newtext pos))
|
||
(if (not (or (= c ?\&)
|
||
(and (>= c ?1)
|
||
(<= c ?9))))
|
||
;; \ followed by some character we don't expand.
|
||
(push (char-to-string c) expanded)
|
||
;; \& or \N
|
||
(if (= c ?\&)
|
||
(setq N 0)
|
||
(setq N (- c ?0)))
|
||
(when (match-beginning N)
|
||
(push (buffer-substring (match-beginning N) (match-end N))
|
||
expanded))))
|
||
(setq pos (1+ pos)))
|
||
(if did-expand
|
||
(apply 'concat (nreverse expanded))
|
||
newtext)))
|
||
|
||
;; Activate a backend only if it isn't already activated.
|
||
;; If FORCE, re-read the active file even if the backend is
|
||
;; already activated.
|
||
(defun nnmail-activate (backend &optional force)
|
||
(nnheader-init-server-buffer)
|
||
(let (file timestamp file-time)
|
||
(if (or (not (symbol-value (intern (format "%s-group-alist" backend))))
|
||
force
|
||
(and (setq file (ignore-errors
|
||
(symbol-value (intern (format "%s-active-file"
|
||
backend)))))
|
||
(setq file-time (nth 5 (file-attributes file)))
|
||
(or (not
|
||
(setq timestamp
|
||
(condition-case ()
|
||
(symbol-value (intern
|
||
(format "%s-active-timestamp"
|
||
backend)))
|
||
(error 'none))))
|
||
(not (consp timestamp))
|
||
(equal timestamp '(0 0))
|
||
(> (nth 0 file-time) (nth 0 timestamp))
|
||
(and (= (nth 0 file-time) (nth 0 timestamp))
|
||
(> (nth 1 file-time) (nth 1 timestamp))))))
|
||
(save-excursion
|
||
(or (eq timestamp 'none)
|
||
(set (intern (format "%s-active-timestamp" backend))
|
||
file-time))
|
||
(funcall (intern (format "%s-request-list" backend)))))
|
||
t))
|
||
|
||
(defun nnmail-message-id ()
|
||
(concat "<" (message-unique-id) "@totally-fudged-out-message-id>"))
|
||
|
||
;;;
|
||
;;; nnmail duplicate handling
|
||
;;;
|
||
|
||
(defvar nnmail-cache-buffer nil)
|
||
|
||
(defun nnmail-cache-open ()
|
||
(if (or (not nnmail-treat-duplicates)
|
||
(and nnmail-cache-buffer
|
||
(buffer-name nnmail-cache-buffer)))
|
||
() ; The buffer is open.
|
||
(save-excursion
|
||
(set-buffer
|
||
(setq nnmail-cache-buffer
|
||
(get-buffer-create " *nnmail message-id cache*")))
|
||
(when (file-exists-p nnmail-message-id-cache-file)
|
||
(nnheader-insert-file-contents nnmail-message-id-cache-file))
|
||
(set-buffer-modified-p nil)
|
||
(current-buffer))))
|
||
|
||
(defun nnmail-cache-close ()
|
||
(when (and nnmail-cache-buffer
|
||
nnmail-treat-duplicates
|
||
(buffer-name nnmail-cache-buffer)
|
||
(buffer-modified-p nnmail-cache-buffer))
|
||
(save-excursion
|
||
(set-buffer nnmail-cache-buffer)
|
||
;; Weed out the excess number of Message-IDs.
|
||
(goto-char (point-max))
|
||
(when (search-backward "\n" nil t nnmail-message-id-cache-length)
|
||
(progn
|
||
(beginning-of-line)
|
||
(delete-region (point-min) (point))))
|
||
;; Save the buffer.
|
||
(or (file-exists-p (file-name-directory nnmail-message-id-cache-file))
|
||
(make-directory (file-name-directory nnmail-message-id-cache-file)
|
||
t))
|
||
(nnmail-write-region (point-min) (point-max)
|
||
nnmail-message-id-cache-file nil 'silent)
|
||
(set-buffer-modified-p nil)
|
||
(setq nnmail-cache-buffer nil)
|
||
(kill-buffer (current-buffer)))))
|
||
|
||
;; Compiler directives.
|
||
(defvar group)
|
||
(defvar group-art-list)
|
||
(defvar group-art)
|
||
(defun nnmail-cache-insert (id)
|
||
(when nnmail-treat-duplicates
|
||
;; Store some information about the group this message is written
|
||
;; to. This function might have been called from various places.
|
||
;; Sometimes, a function up in the calling sequence has an
|
||
;; argument GROUP which is bound to a string, the group name. At
|
||
;; other times, there is a function up in the calling sequence
|
||
;; which has an argument GROUP-ART which is a list of pairs, and
|
||
;; the car of a pair is a group name. Should we check that the
|
||
;; length of the list is equal to 1? -- kai
|
||
(let ((g nil))
|
||
(cond ((and (boundp 'group) group)
|
||
(setq g group))
|
||
((and (boundp 'group-art-list) group-art-list
|
||
(listp group-art-list))
|
||
(setq g (caar group-art-list)))
|
||
((and (boundp 'group-art) group-art (listp group-art))
|
||
(setq g (caar group-art)))
|
||
(t (setq g "")))
|
||
(unless (gnus-buffer-live-p nnmail-cache-buffer)
|
||
(nnmail-cache-open))
|
||
(save-excursion
|
||
(set-buffer nnmail-cache-buffer)
|
||
(goto-char (point-max))
|
||
(if (and g (not (string= "" g))
|
||
(gnus-methods-equal-p gnus-command-method
|
||
(nnmail-cache-primary-mail-backend)))
|
||
(insert id "\t" g "\n")
|
||
(insert id "\n"))))))
|
||
|
||
(defun nnmail-cache-primary-mail-backend ()
|
||
(let ((be-list (cons gnus-select-method gnus-secondary-select-methods))
|
||
(be nil)
|
||
(res nil))
|
||
(while (and (null res) be-list)
|
||
(setq be (car be-list))
|
||
(setq be-list (cdr be-list))
|
||
(when (and (gnus-method-option-p be 'respool)
|
||
(eval (intern (format "%s-get-new-mail" (car be)))))
|
||
(setq res be)))
|
||
res))
|
||
|
||
;; Fetch the group name corresponding to the message id stored in the
|
||
;; cache.
|
||
(defun nnmail-cache-fetch-group (id)
|
||
(when (and nnmail-treat-duplicates nnmail-cache-buffer)
|
||
(save-excursion
|
||
(set-buffer nnmail-cache-buffer)
|
||
(goto-char (point-max))
|
||
(when (search-backward id nil t)
|
||
(beginning-of-line)
|
||
(skip-chars-forward "^\n\r\t")
|
||
(unless (eolp)
|
||
(forward-char 1)
|
||
(buffer-substring (point)
|
||
(progn (end-of-line) (point))))))))
|
||
|
||
;; Function for nnmail-split-fancy: look up all references in the
|
||
;; cache and if a match is found, return that group.
|
||
(defun nnmail-split-fancy-with-parent ()
|
||
(let* ((refstr (or (message-fetch-field "references")
|
||
(message-fetch-field "in-reply-to")))
|
||
(references nil)
|
||
(res nil))
|
||
(when refstr
|
||
(setq references (nreverse (gnus-split-references refstr)))
|
||
(unless (gnus-buffer-live-p nnmail-cache-buffer)
|
||
(nnmail-cache-open))
|
||
(mapcar (lambda (x)
|
||
(setq res (or (nnmail-cache-fetch-group x) res))
|
||
(when (string= "drafts" res)
|
||
(setq res nil)))
|
||
references)
|
||
res)))
|
||
|
||
(defun nnmail-cache-id-exists-p (id)
|
||
(when nnmail-treat-duplicates
|
||
(save-excursion
|
||
(set-buffer nnmail-cache-buffer)
|
||
(goto-char (point-max))
|
||
(search-backward id nil t))))
|
||
|
||
(defun nnmail-fetch-field (header)
|
||
(save-excursion
|
||
(save-restriction
|
||
(message-narrow-to-head)
|
||
(message-fetch-field header))))
|
||
|
||
(defun nnmail-check-duplication (message-id func artnum-func)
|
||
(run-hooks 'nnmail-prepare-incoming-message-hook)
|
||
;; If this is a duplicate message, then we do not save it.
|
||
(let* ((duplication (nnmail-cache-id-exists-p message-id))
|
||
(case-fold-search t)
|
||
(action (when duplication
|
||
(cond
|
||
((memq nnmail-treat-duplicates '(warn delete))
|
||
nnmail-treat-duplicates)
|
||
((nnheader-functionp nnmail-treat-duplicates)
|
||
(funcall nnmail-treat-duplicates message-id))
|
||
(t
|
||
nnmail-treat-duplicates))))
|
||
group-art)
|
||
;; We insert a line that says what the mail source is.
|
||
(let ((case-fold-search t))
|
||
(goto-char (point-min))
|
||
(re-search-forward "^message-id[ \t]*:" nil t)
|
||
(beginning-of-line)
|
||
(insert (format "X-Gnus-Mail-Source: %s\n" mail-source-string)))
|
||
|
||
;; Let the backend save the article (or not).
|
||
(cond
|
||
((not duplication)
|
||
(funcall func (setq group-art
|
||
(nreverse (nnmail-article-group artnum-func))))
|
||
(nnmail-cache-insert message-id))
|
||
((eq action 'delete)
|
||
(setq group-art nil))
|
||
((eq action 'warn)
|
||
;; We insert a warning.
|
||
(let ((case-fold-search t))
|
||
(goto-char (point-min))
|
||
(re-search-forward "^message-id[ \t]*:" nil t)
|
||
(beginning-of-line)
|
||
(insert
|
||
"Gnus-Warning: This is a duplicate of message " message-id "\n")
|
||
(funcall func (setq group-art
|
||
(nreverse (nnmail-article-group artnum-func))))))
|
||
(t
|
||
(funcall func (setq group-art
|
||
(nreverse (nnmail-article-group artnum-func))))))
|
||
;; Add the group-art list to the history list.
|
||
(if group-art
|
||
(push group-art nnmail-split-history)
|
||
(delete-region (point-min) (point-max)))))
|
||
|
||
;;; Get new mail.
|
||
|
||
(defvar nnmail-fetched-sources nil)
|
||
|
||
(defun nnmail-get-value (&rest args)
|
||
(let ((sym (intern (apply 'format args))))
|
||
(when (boundp sym)
|
||
(symbol-value sym))))
|
||
|
||
(defun nnmail-get-new-mail (method exit-func temp
|
||
&optional group spool-func)
|
||
"Read new incoming mail."
|
||
(let* ((sources (or mail-sources
|
||
(if (listp nnmail-spool-file) nnmail-spool-file
|
||
(list nnmail-spool-file))))
|
||
fetching-sources
|
||
(group-in group)
|
||
(i 0)
|
||
(new 0)
|
||
(total 0)
|
||
incoming incomings source)
|
||
(when (and (nnmail-get-value "%s-get-new-mail" method)
|
||
sources)
|
||
(while (setq source (pop sources))
|
||
;; Be compatible with old values.
|
||
(cond
|
||
((stringp source)
|
||
(setq source
|
||
(cond
|
||
((string-match "^po:" source)
|
||
(list 'pop :user (substring source (match-end 0))))
|
||
((file-directory-p source)
|
||
(list 'directory :path source))
|
||
(t
|
||
(list 'file :path source)))))
|
||
((eq source 'procmail)
|
||
(message "Invalid value for nnmail-spool-file: `procmail'")
|
||
nil))
|
||
;; Hack to only fetch the contents of a single group's spool file.
|
||
(when (and (eq (car source) 'directory)
|
||
(null nnmail-scan-directory-mail-source-once)
|
||
group)
|
||
(mail-source-bind (directory source)
|
||
(setq source (append source
|
||
(list
|
||
:predicate
|
||
`(lambda (file)
|
||
(string-match
|
||
,(concat
|
||
(regexp-quote (concat group suffix))
|
||
"$")
|
||
file)))))))
|
||
(when nnmail-fetched-sources
|
||
(if (member source nnmail-fetched-sources)
|
||
(setq source nil)
|
||
(push source nnmail-fetched-sources)
|
||
(push source fetching-sources)))))
|
||
(when fetching-sources
|
||
;; We first activate all the groups.
|
||
(nnmail-activate method)
|
||
;; Allow the user to hook.
|
||
(run-hooks 'nnmail-pre-get-new-mail-hook)
|
||
;; Open the message-id cache.
|
||
(nnmail-cache-open)
|
||
;; The we go through all the existing mail source specification
|
||
;; and fetch the mail from each.
|
||
(while (setq source (pop fetching-sources))
|
||
(nnheader-message 4 "%s: Reading incoming mail from %s..."
|
||
method (car source))
|
||
(when (setq new
|
||
(mail-source-fetch
|
||
source
|
||
`(lambda (file orig-file)
|
||
(nnmail-split-incoming
|
||
file ',(intern (format "%s-save-mail" method))
|
||
',spool-func
|
||
(if (equal file orig-file)
|
||
nil
|
||
(nnmail-get-split-group orig-file ',source))
|
||
',(intern (format "%s-active-number" method))))))
|
||
(incf total new)
|
||
(incf i)))
|
||
;; If we did indeed read any incoming spools, we save all info.
|
||
(if (zerop total)
|
||
(nnheader-message 4 "%s: Reading incoming mail (no new mail)...done"
|
||
method (car source))
|
||
(nnmail-save-active
|
||
(nnmail-get-value "%s-group-alist" method)
|
||
(nnmail-get-value "%s-active-file" method))
|
||
(when exit-func
|
||
(funcall exit-func))
|
||
(run-hooks 'nnmail-read-incoming-hook)
|
||
(nnheader-message 4 "%s: Reading incoming mail (%d new)...done" method
|
||
total))
|
||
;; Close the message-id cache.
|
||
(nnmail-cache-close)
|
||
;; Allow the user to hook.
|
||
(run-hooks 'nnmail-post-get-new-mail-hook))))
|
||
|
||
(defun nnmail-expired-article-p (group time force &optional inhibit)
|
||
"Say whether an article that is TIME old in GROUP should be expired."
|
||
(if force
|
||
t
|
||
(let ((days (or (and nnmail-expiry-wait-function
|
||
(funcall nnmail-expiry-wait-function group))
|
||
nnmail-expiry-wait)))
|
||
(cond ((or (eq days 'never)
|
||
(and (not force)
|
||
inhibit))
|
||
;; This isn't an expirable group.
|
||
nil)
|
||
((eq days 'immediate)
|
||
;; We expire all articles on sight.
|
||
t)
|
||
((equal time '(0 0))
|
||
;; This is an ange-ftp group, and we don't have any dates.
|
||
nil)
|
||
((numberp days)
|
||
(setq days (days-to-time days))
|
||
;; Compare the time with the current time.
|
||
(ignore-errors (time-less-p days (time-since time))))))))
|
||
|
||
(defun nnmail-expiry-target-group (target group)
|
||
(when (nnheader-functionp target)
|
||
(setq target (funcall target group)))
|
||
(unless (eq target 'delete)
|
||
(gnus-request-accept-article target nil nil t)))
|
||
|
||
(defun nnmail-check-syntax ()
|
||
"Check (and modify) the syntax of the message in the current buffer."
|
||
(save-restriction
|
||
(message-narrow-to-head)
|
||
(let ((case-fold-search t))
|
||
(unless (re-search-forward "^Message-ID[ \t]*:" nil t)
|
||
(insert "Message-ID: " (nnmail-message-id) "\n")))))
|
||
|
||
(defun nnmail-write-region (start end filename &optional append visit lockname)
|
||
"Do a `write-region', and then set the file modes."
|
||
(let ((coding-system-for-write nnmail-file-coding-system)
|
||
(file-name-coding-system nnmail-pathname-coding-system))
|
||
(write-region start end filename append visit lockname)
|
||
(set-file-modes filename nnmail-default-file-modes)))
|
||
|
||
;;;
|
||
;;; Status functions
|
||
;;;
|
||
|
||
(defun nnmail-replace-status (name value)
|
||
"Make status NAME and VALUE part of the current status line."
|
||
(save-restriction
|
||
(message-narrow-to-head)
|
||
(let ((status (nnmail-decode-status)))
|
||
(setq status (delq (member name status) status))
|
||
(when value
|
||
(push (cons name value) status))
|
||
(message-remove-header "status")
|
||
(goto-char (point-max))
|
||
(insert "Status: " (nnmail-encode-status status) "\n"))))
|
||
|
||
(defun nnmail-decode-status ()
|
||
"Return a status-value alist from STATUS."
|
||
(goto-char (point-min))
|
||
(when (re-search-forward "^Status: " nil t)
|
||
(let (name value status)
|
||
(save-restriction
|
||
;; Narrow to the status.
|
||
(narrow-to-region
|
||
(point)
|
||
(if (re-search-forward "^[^ \t]" nil t)
|
||
(1- (point))
|
||
(point-max)))
|
||
;; Go through all elements and add them to the list.
|
||
(goto-char (point-min))
|
||
(while (re-search-forward "[^ \t=]+" nil t)
|
||
(setq name (match-string 0))
|
||
(if (not (eq (char-after) ?=))
|
||
;; Implied "yes".
|
||
(setq value "yes")
|
||
(forward-char 1)
|
||
(if (not (eq (char-after) ?\"))
|
||
(if (not (looking-at "[^ \t]"))
|
||
;; Implied "no".
|
||
(setq value "no")
|
||
;; Unquoted value.
|
||
(setq value (match-string 0))
|
||
(goto-char (match-end 0)))
|
||
;; Quoted value.
|
||
(setq value (read (current-buffer)))))
|
||
(push (cons name value) status)))
|
||
status)))
|
||
|
||
(defun nnmail-encode-status (status)
|
||
"Return a status string from STATUS."
|
||
(mapconcat
|
||
(lambda (elem)
|
||
(concat
|
||
(car elem) "="
|
||
(if (string-match "[ \t]" (cdr elem))
|
||
(prin1-to-string (cdr elem))
|
||
(cdr elem))))
|
||
status " "))
|
||
|
||
(defun nnmail-split-history ()
|
||
"Generate an overview of where the last mail split put articles."
|
||
(interactive)
|
||
(unless nnmail-split-history
|
||
(error "No current split history"))
|
||
(with-output-to-temp-buffer "*nnmail split history*"
|
||
(with-current-buffer standard-output
|
||
(fundamental-mode)) ; for Emacs 20.4+
|
||
(let ((history nnmail-split-history)
|
||
elem)
|
||
(while (setq elem (pop history))
|
||
(princ (mapconcat (lambda (ga)
|
||
(concat (car ga) ":" (int-to-string (cdr ga))))
|
||
elem
|
||
", "))
|
||
(princ "\n")))))
|
||
|
||
(defun nnmail-purge-split-history (group)
|
||
"Remove all instances of GROUP from `nnmail-split-history'."
|
||
(let ((history nnmail-split-history))
|
||
(while history
|
||
(setcar history (gnus-delete-if (lambda (e) (string= (car e) group))
|
||
(car history)))
|
||
(pop history))
|
||
(setq nnmail-split-history (delq nil nnmail-split-history))))
|
||
|
||
(defun nnmail-new-mail-p (group)
|
||
"Say whether GROUP has new mail."
|
||
(let ((his nnmail-split-history)
|
||
found)
|
||
(while his
|
||
(when (assoc group (pop his))
|
||
(setq found t
|
||
his nil)))
|
||
found))
|
||
|
||
(defun nnmail-within-headers-p ()
|
||
"Check to see if point is within the headers of a unix mail message.
|
||
Doesn't change point."
|
||
(let ((pos (point)))
|
||
(save-excursion
|
||
(and (nnmail-search-unix-mail-delim-backward)
|
||
(not (search-forward "\n\n" pos t))))))
|
||
|
||
(run-hooks 'nnmail-load-hook)
|
||
|
||
(provide 'nnmail)
|
||
|
||
;;; nnmail.el ends here
|