1 ;;; gnus-sieve.el --- Utilities to manage sieve scripts for Gnus
2 ;; Copyright (C) 2001 Free Software Foundation, Inc.
4 ;; Author: NAGY Andras <nagya@inf.elte.hu>,
5 ;; Simon Josefsson <simon@josefsson.org>
7 ;; This file is not part of GNU Emacs, but the same permissions apply.
9 ;; GNU Emacs is free software; you can redistribute it and/or modify
10 ;; it under the terms of the GNU General Public License as published by
11 ;; the Free Software Foundation; either version 2, or (at your option)
14 ;; GNU Emacs is distributed in the hope that it will be useful,
15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 ;; GNU General Public License for more details.
19 ;; You should have received a copy of the GNU General Public License
20 ;; along with GNU Emacs; see the file COPYING. If not, write to the
21 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
22 ;; Boston, MA 02111-1307, USA.
26 ;; Gnus glue to generate complete Sieve scripts from Gnus Group
27 ;; Parameters with "if" test predicates.
33 (require 'format-spec)
34 (autoload 'sieve-mode "sieve-mode")
40 (defgroup gnus-sieve nil
41 "Manage sieve scripts in Gnus."
44 (defcustom gnus-sieve-file "~/.sieve"
45 "Path to your Sieve script."
49 (defcustom gnus-sieve-region-start "\n## Begin Gnus Sieve Script\n"
50 "Line indicating the start of the autogenerated region in
55 (defcustom gnus-sieve-region-end "\n## End Gnus Sieve Script\n"
56 "Line indicating the end of the autogenerated region in
61 (defcustom gnus-sieve-select-method nil
62 "Which select method we generate the Sieve script for.
64 For example: \"nnimap:mailbox\""
67 (defcustom gnus-sieve-crosspost t
68 "Whether the generated Sieve script should do crossposting."
72 (defcustom gnus-sieve-update-shell-command "echo put %f | sieveshell %s"
73 "Shell command to execute after updating your Sieve script. The following
74 formatting characters are recognized:
76 %f Script's file name (gnus-sieve-file)
77 %s Server name (from gnus-sieve-select-method)"
82 (defun gnus-sieve-update ()
83 "Update the Sieve script in gnus-sieve-file, by replacing the region
84 between gnus-sieve-region-start and gnus-sieve-region-end with
85 \(gnus-sieve-script gnus-sieve-select-method gnus-sieve-crosspost\), then
86 execute gnus-sieve-update-shell-command.
87 See the documentation for these variables and functions for details."
92 (format-spec gnus-sieve-update-shell-command
93 (format-spec-make ?f gnus-sieve-file
94 ?s (or (cadr (gnus-server-get-method
95 nil gnus-sieve-select-method))
99 (defun gnus-sieve-generate ()
100 "Generate the Sieve script in gnus-sieve-file, by replacing the region
101 between gnus-sieve-region-start and gnus-sieve-region-end with
102 \(gnus-sieve-script gnus-sieve-select-method gnus-sieve-crosspost\).
103 See the documentation for these variables and functions for details."
106 (find-file gnus-sieve-file)
107 (goto-char (point-min))
108 (if (re-search-forward
109 (concat (regexp-quote gnus-sieve-region-start) "\\(.\\|\n\\)*"
110 (regexp-quote gnus-sieve-region-end)) nil t)
111 (delete-region (match-beginning 0) (match-end 0))
112 (insert sieve-template))
113 (insert gnus-sieve-region-start
114 (gnus-sieve-script gnus-sieve-select-method gnus-sieve-crosspost)
115 gnus-sieve-region-end))
117 (defun gnus-sieve-guess-rule-for-article ()
118 "Guess a sieve rule based on RFC822 article in buffer.
119 Return NIL if no rule could be guessed."
120 (when (message-fetch-field "sender")
121 `(sieve address "sender" ,(regexp-quote (message-fetch-field "sender")))))
124 (defun gnus-sieve-article-add-rule ()
126 (gnus-summary-select-article nil 'force)
127 (with-current-buffer gnus-original-article-buffer
128 (let ((rule (gnus-sieve-guess-rule-for-article))
129 (info (gnus-get-info gnus-newsgroup-name)))
131 (error "Could not guess rule for article.")
132 (gnus-info-set-params info (cons rule (gnus-info-params info)))
133 (message "Added rule in group %s for article: %s" gnus-newsgroup-name
138 ;; FIXME: do proper quoting of " etc
139 (defun gnus-sieve-string-list (list)
140 "Convert an elisp string list to a Sieve string list.
143 \(gnus-sieve-string-list '(\"to\" \"cc\"))
144 => \"[\\\"to\\\", \\\"cc\\\"]\"
146 (concat "[\"" (mapconcat 'identity list "\", \"") "\"]"))
148 (defun gnus-sieve-test-list (list)
149 "Convert an elisp test list to a Sieve test list.
152 \(gnus-sieve-test-list '((address \"sender\" \"boss@company.com\") (size :over 4K)))
153 => \"(address \\\"sender\\\" \\\"boss@company.com\\\", size :over 4K)\""
154 (concat "(" (mapconcat 'gnus-sieve-test list ", ") ")"))
156 ;; FIXME: do proper quoting
157 (defun gnus-sieve-test-token (token)
158 "Convert an elisp test token to a Sieve test token.
161 \(gnus-sieve-test-token 'address)
164 \(gnus-sieve-test-token \"sender\")
165 => \"\\\"sender\\\"\"
167 \(gnus-sieve-test-token '(\"to\" \"cc\"))
168 => \"[\\\"to\\\", \\\"cc\\\"]\""
170 ((symbolp token) ;; Keyword
173 ((stringp token) ;; String
174 (concat "\"" token "\""))
176 ((and (listp token) ;; String list
177 (stringp (car token)))
178 (gnus-sieve-string-list token))
180 ((and (listp token) ;; Test list
182 (gnus-sieve-test-list token))))
184 (defun gnus-sieve-test (test)
185 "Convert an elisp test to a Sieve test.
188 \(gnus-sieve-test '(address \"sender\" \"sieve-admin@extundo.com\"))
189 => \"address \\\"sender\\\" \\\"sieve-admin@extundo.com\\\"\"
191 \(gnus-sieve-test '(anyof ((header :contains (\"to\" \"cc\") \"my@address.com\")
193 => \"anyof (header :contains [\\\"to\\\", \\\"cc\\\"] \\\"my@address.com\\\",
195 (mapconcat 'gnus-sieve-test-token test " "))
197 (defun gnus-sieve-script (&optional method crosspost)
198 "Generate a Sieve script based on groups with select method METHOD
199 \(or all groups if nil\). Only groups having a `sieve' parameter are
200 considered. This parameter should contain an elisp test
201 \(see the documentation of gnus-sieve-test for details\). For each
202 such group, a Sieve IF control structure is generated, having the
203 test as the condition and { fileinto \"group.name\"; } as the body.
205 If CROSSPOST is nil, each conditional body contains a \"stop\" command
206 which stops execution after a match is found.
208 For example: If the INBOX.list.sieve group has the
210 (sieve address \"sender\" \"sieve-admin@extundo.com\")
212 group parameter, (gnus-sieve-script) results in:
214 if address \"sender\" \"sieve-admin@extundo.com\" {
215 fileinto \"INBOX.list.sieve\";
218 This is returned as a string."
219 (let* ((newsrc (cdr gnus-newsrc-alist))
221 (dolist (info newsrc)
222 (when (or (not method)
223 (gnus-server-equal method (gnus-info-method info)))
224 (let* ((group (gnus-info-group info))
225 (spec (gnus-group-find-parameter group 'sieve t)))
227 (push (concat "if " (gnus-sieve-test spec) " {\n"
228 "\tfileinto \"" (gnus-group-real-name group) "\";\n"
229 (if gnus-sieve-crosspost
234 (mapconcat 'identity script "\n")))
236 (provide 'gnus-sieve)
238 ;;; gnus-sieve.el ends here