/usr/share/emacs/site-lisp/wl/wl/wl-refile.el is in wl-beta 2.15.9+0.20151119-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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;; Copyright (C) 1998,1999,2000 Yuuichi Teranishi <teranisi@gohome.org>
;; Author: Yuuichi Teranishi <teranisi@gohome.org>
;; Keywords: mail, net news
;; This file is part of Wanderlust (Yet Another Message Interface on Emacsen).
;; This program 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 2, or (at your option)
;; any later version.
;;
;; This program 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, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
;;
;;; Commentary:
;;
;;; Code:
;;
(require 'wl-vars)
(require 'wl-util)
(defvar wl-refile-alist nil)
(defvar wl-refile-alist-file-name "refile-alist")
;; should be renamed to "refile-from-alist"
(defvar wl-refile-msgid-alist nil)
(defvar wl-refile-msgid-alist-file-name "refile-msgid-alist")
(defvar wl-refile-subject-alist nil)
(defvar wl-refile-subject-alist-file-name "refile-subject-alist")
(defvar wl-refile-default-from-folder-path-separator "/")
(defvar wl-refile-alist-max-length 1000)
(defun wl-refile-alist-setup ()
(let ((flist wl-refile-guess-functions))
(while flist
(cond
((eq (car flist) 'wl-refile-guess-by-history)
(setq wl-refile-alist
(elmo-object-load
(expand-file-name wl-refile-alist-file-name
elmo-msgdb-directory) elmo-mime-charset)))
((eq (car flist) 'wl-refile-guess-by-msgid)
(setq wl-refile-msgid-alist
(elmo-object-load
(expand-file-name wl-refile-msgid-alist-file-name
elmo-msgdb-directory) elmo-mime-charset)))
((eq (car flist) 'wl-refile-guess-by-subject)
(setq wl-refile-subject-alist
(elmo-object-load
(expand-file-name wl-refile-subject-alist-file-name
elmo-msgdb-directory) elmo-mime-charset))))
(setq flist (cdr flist)))))
(defun wl-refile-alist-save ()
(if wl-refile-alist
(wl-refile-alist-save-file
wl-refile-alist-file-name wl-refile-alist))
(if wl-refile-msgid-alist
(wl-refile-alist-save-file
wl-refile-msgid-alist-file-name wl-refile-msgid-alist))
(if wl-refile-subject-alist
(wl-refile-alist-save-file
wl-refile-subject-alist-file-name wl-refile-subject-alist)))
(defun wl-refile-alist-save-file (file-name alist)
(if (> (length alist) wl-refile-alist-max-length)
(setcdr (nthcdr (1- wl-refile-alist-max-length) alist) nil))
(elmo-object-save (expand-file-name file-name elmo-msgdb-directory)
alist elmo-mime-charset))
(defun wl-refile-learn (entity dst)
(let (tocc-list from key hit ml)
(setq dst (elmo-string dst))
(setq tocc-list
(mapcar (lambda (entity)
(downcase (wl-address-header-extract-address entity)))
(append
(elmo-message-entity-field entity 'to)
(elmo-message-entity-field entity 'cc))))
(while tocc-list
(if (wl-string-member
(car tocc-list)
(mapcar (function downcase) wl-subscribed-mailing-list))
(setq ml (car tocc-list)
tocc-list nil)
(setq tocc-list (cdr tocc-list))))
(if ml
(setq key ml) ; subscribed entity!!
(or (wl-address-user-mail-address-p
(setq from
(downcase
(wl-address-header-extract-address
(elmo-message-entity-field entity 'from)))))
(setq key from))
(if (or wl-refile-msgid-alist
(memq 'wl-refile-guess-by-msgid
wl-refile-guess-functions))
(wl-refile-msgid-learn entity dst))
(if (or wl-refile-subject-alist
(memq 'wl-refile-guess-by-subject
wl-refile-guess-functions))
(wl-refile-subject-learn entity dst)))
(when key
(if (setq hit (assoc key wl-refile-alist))
(setq wl-refile-alist (delq hit wl-refile-alist)))
(setq wl-refile-alist (cons (cons key dst)
wl-refile-alist)))))
(defun wl-refile-msgid-learn (entity dst)
(let ((key (elmo-message-entity-field entity 'message-id))
hit)
(setq dst (elmo-string dst))
(if key
(if (setq hit (assoc key wl-refile-msgid-alist))
(setcdr hit dst)
(setq wl-refile-msgid-alist (cons (cons key dst)
wl-refile-msgid-alist))))))
(defun wl-refile-subject-learn (entity dst)
(let ((subject (funcall wl-summary-subject-filter-function
(elmo-message-entity-field entity 'subject)))
hit)
(setq dst (elmo-string dst))
(if (and subject (not (string= subject "")))
(if (setq hit (assoc subject wl-refile-subject-alist))
(setcdr hit dst)
(setq wl-refile-subject-alist (cons (cons subject dst)
wl-refile-subject-alist))))))
;;
;; refile guess
;;
(defvar wl-refile-guess-functions
'(wl-refile-guess-by-rule
wl-refile-guess-by-msgid
wl-refile-guess-by-subject
wl-refile-guess-by-history
wl-refile-guess-by-from)
"*Functions in this list are used for guessing refile destination folder.")
;; 2000-11-05: *-func-list -> *-functions
(elmo-define-obsolete-variable 'wl-refile-guess-func-list
'wl-refile-guess-functions)
(defun wl-refile-guess (entity &optional functions)
(let ((flist (or functions wl-refile-guess-functions))
guess)
(while flist
(if (setq guess (funcall (car flist) entity))
(setq flist nil)
(setq flist (cdr flist))))
guess))
(defun wl-refile-evaluate-rule (rule entity)
"Return folder string if RULE is matched to ENTITY.
If RULE does not match ENTITY, returns nil."
(let ((case-fold-search t)
fields guess pairs value)
(cond
((stringp rule) rule)
((listp (car rule))
(setq fields (car rule))
(while fields
(if (setq guess (wl-refile-evaluate-rule (append (list (car fields))
(cdr rule))
entity))
(setq fields nil)
(setq fields (cdr fields))))
guess)
((stringp (car rule))
(setq pairs (cdr rule))
(setq value (wl-refile-get-field-value entity (car rule)))
(while pairs
(if (and (stringp value)
(string-match
(car (car pairs))
value)
(setq guess (wl-expand-newtext
(wl-refile-evaluate-rule (cdr (car pairs))
entity)
value)))
(setq pairs nil)
(setq pairs (cdr pairs))))
guess)
(t (error "Invalid structure for wl-refile-rule-alist")))))
(defun wl-refile-get-field-value (entity field)
"Get FIELD value from ENTITY."
(elmo-message-entity-field entity (intern (downcase field)) 'string))
(defun wl-refile-guess-by-rule (entity)
(let ((rules wl-refile-rule-alist)
guess)
(while rules
(if (setq guess (wl-refile-evaluate-rule (car rules) entity))
(setq rules nil)
(setq rules (cdr rules))))
guess))
(defun wl-refile-guess-by-history (entity)
(let ((tocc-list
(mapcar (lambda (entity)
(downcase (wl-address-header-extract-address entity)))
(append
(elmo-message-entity-field entity 'to)
(elmo-message-entity-field entity 'cc))))
ret-val)
(setq tocc-list (wl-address-delete-user-mail-addresses tocc-list))
(while tocc-list
(if (setq ret-val (cdr (assoc (car tocc-list) wl-refile-alist)))
(setq tocc-list nil)
(setq tocc-list (cdr tocc-list))))
ret-val))
(defun wl-refile-get-account-part-from-address (address)
(if (string-match "\\([^@]+\\)@[^@]+" address)
(wl-match-string 1 address)
address))
(defun wl-refile-guess-by-from (entity)
(let ((from (downcase (wl-address-header-extract-address
(elmo-message-entity-field entity 'from))))
(folder (elmo-make-folder wl-refile-default-from-folder))
(elmo-path-sep wl-refile-default-from-folder-path-separator))
;; search from alist
(or (cdr (assoc from wl-refile-alist))
(concat
(elmo-folder-prefix-internal folder)
(elmo-concat-path
(substring wl-refile-default-from-folder
(length (elmo-folder-prefix-internal folder)))
(wl-refile-get-account-part-from-address from))))))
(defun wl-refile-guess-by-msgid (entity)
(let ((references (elmo-message-entity-field entity 'references))
result)
;; In old msgdb, references's field is a string.
(when (stringp references)
(setq references (list references)))
(while references
(setq references
(if (setq result
(cdr (assoc (car references) wl-refile-msgid-alist)))
nil
(cdr references)))
result)))
(defun wl-refile-guess-by-subject (entity)
(cdr (assoc (funcall wl-summary-subject-filter-function
(elmo-message-entity-field entity 'subject))
wl-refile-subject-alist)))
(require 'product)
(product-provide (provide 'wl-refile) (require 'wl-version))
;;; wl-refile.el ends here
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