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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 ELMO (Elisp Library for Message Orchestration).
;; 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:
;;
(eval-when-compile (require 'cl))
(require 'elmo-util)
(require 'elmo)
(require 'elmo-map)
(defcustom elmo-maildir-folder-path "~/Maildir"
"*Maildir folder path."
:type 'directory
:group 'elmo)
(defconst elmo-maildir-flag-specs '((important ?F)
(read ?S)
(unread ?S 'remove)
(answered ?R)))
(defcustom elmo-maildir-separator
(if (memq system-type
'(windows-nt OS/2 emx ms-dos win32 w32 mswindows cygwin))
?\- ?:)
"Character separating the id section from the flags section.
According to the maildir specification, this should be a colon (?:),
but some file systems don't support colons in filenames."
:type 'character
:group 'elmo)
(defmacro elmo-maildir-adjust-separator (string)
`(if (= elmo-maildir-separator ?:)
,string
(elmo-replace-in-string
,string ":" (char-to-string elmo-maildir-separator))))
;;; ELMO Maildir folder
(eval-and-compile
(luna-define-class elmo-maildir-folder
(elmo-map-folder elmo-file-tag)
(directory unread-locations
flagged-locations
answered-locations))
(luna-define-internal-accessors 'elmo-maildir-folder))
(luna-define-method elmo-folder-initialize ((folder
elmo-maildir-folder)
name)
(if (file-name-absolute-p name)
(elmo-maildir-folder-set-directory-internal
folder
(expand-file-name name))
(elmo-maildir-folder-set-directory-internal
folder
(expand-file-name
name
elmo-maildir-folder-path)))
folder)
(luna-define-method elmo-folder-expand-msgdb-path ((folder
elmo-maildir-folder))
(expand-file-name
(elmo-replace-string-as-filename
(elmo-maildir-folder-directory-internal folder))
(expand-file-name
"maildir"
elmo-msgdb-directory)))
(defun elmo-maildir-message-file-name (folder location)
"Get a file name of the message from FOLDER which corresponded to
LOCATION."
(let ((file (file-name-completion
location
(expand-file-name
"cur"
(elmo-maildir-folder-directory-internal folder)))))
(if file
(expand-file-name
(if (eq file t) location file)
(expand-file-name
"cur"
(elmo-maildir-folder-directory-internal folder))))))
(defsubst elmo-maildir-list-location (dir &optional child-dir)
(let* ((cur-dir (expand-file-name (or child-dir "cur") dir))
(cur (mapcar (lambda (x)
(cons x (elmo-get-last-modification-time
(expand-file-name x cur-dir))))
(directory-files cur-dir
nil "^[^.].*$" t)))
(regexp (elmo-maildir-adjust-separator "^\\(.+\\):[12],\\(.*\\)$"))
unread-locations flagged-locations answered-locations
sym locations flag-list x-time y-time)
(setq cur (sort cur
(lambda (x y)
(setq x-time (cdr x)
y-time (cdr y))
(cond
((< x-time y-time)
t)
((eq x-time y-time)
(< (elmo-maildir-sequence-number (car x))
(elmo-maildir-sequence-number (car y))))))))
(setq locations
(mapcar
(lambda (x)
(let ((name (car x)))
(if (string-match regexp name)
(progn
(setq sym (match-string 1 name)
flag-list (string-to-char-list
(match-string 2 name)))
(when (memq ?F flag-list)
(setq flagged-locations
(cons sym flagged-locations)))
(when (memq ?R flag-list)
(setq answered-locations
(cons sym answered-locations)))
(unless (memq ?S flag-list)
(setq unread-locations
(cons sym unread-locations)))
sym)
name)))
cur))
(list locations unread-locations flagged-locations answered-locations)))
(luna-define-method elmo-map-folder-list-message-locations
((folder elmo-maildir-folder))
(elmo-maildir-update-current folder)
(let ((locs (elmo-maildir-list-location
(elmo-maildir-folder-directory-internal folder))))
;; 0: locations, 1: unread-locs, 2: flagged-locs 3: answered-locs
(elmo-maildir-folder-set-unread-locations-internal folder (nth 1 locs))
(elmo-maildir-folder-set-flagged-locations-internal folder (nth 2 locs))
(elmo-maildir-folder-set-answered-locations-internal folder (nth 3 locs))
(nth 0 locs)))
(luna-define-method elmo-map-folder-list-flagged ((folder elmo-maildir-folder)
flag)
(case flag
(unread
(elmo-maildir-folder-unread-locations-internal folder))
(important
(elmo-maildir-folder-flagged-locations-internal folder))
(answered
(elmo-maildir-folder-answered-locations-internal folder))
(otherwise
t)))
(luna-define-method elmo-folder-msgdb-create ((folder elmo-maildir-folder)
numbers flag-table)
(let ((unread-list (elmo-maildir-folder-unread-locations-internal folder))
(flagged-list (elmo-maildir-folder-flagged-locations-internal folder))
(answered-list (elmo-maildir-folder-answered-locations-internal
folder))
(new-msgdb (elmo-make-msgdb))
entity message-id flags location)
(elmo-with-progress-display (elmo-folder-msgdb-create (length numbers))
"Creating msgdb"
(dolist (number numbers)
(setq location (elmo-map-message-location folder number))
(setq entity
(elmo-msgdb-create-message-entity-from-file
(elmo-msgdb-message-entity-handler new-msgdb)
number
(elmo-maildir-message-file-name folder location)))
(when entity
(setq message-id (elmo-message-entity-field entity 'message-id)
;; Precede flag-table to file-info.
flags (copy-sequence
(elmo-flag-table-get flag-table message-id)))
;; Already flagged on filename (precede it to flag-table).
(when (member location flagged-list)
(or (memq 'important flags)
(setq flags (cons 'important flags))))
(when (member location answered-list)
(or (memq 'answered flags)
(setq flags (cons 'answered flags))))
(unless (member location unread-list)
(and (memq 'unread flags)
(setq flags (delq 'unread flags))))
;; Update filename's info portion according to the flag-table.
(when (and (memq 'important flags)
(not (member location flagged-list)))
(elmo-maildir-set-mark
(elmo-maildir-message-file-name folder location)
?F)
;; Append to flagged location list.
(elmo-maildir-folder-set-flagged-locations-internal
folder
(cons location
(elmo-maildir-folder-flagged-locations-internal
folder)))
(setq flags (delq 'unread flags)))
(when (and (memq 'answered flags)
(not (member location answered-list)))
(elmo-maildir-set-mark
(elmo-maildir-message-file-name folder location)
?R)
;; Append to answered location list.
(elmo-maildir-folder-set-answered-locations-internal
folder
(cons location
(elmo-maildir-folder-answered-locations-internal folder)))
(setq flags (delq 'unread flags)))
(when (and (not (memq 'unread flags))
(member location unread-list))
(elmo-maildir-set-mark
(elmo-maildir-message-file-name folder location)
?S)
;; Delete from unread locations.
(elmo-maildir-folder-set-unread-locations-internal
folder
(delete location
(elmo-maildir-folder-unread-locations-internal
folder))))
(unless (memq 'unread flags)
(setq flags (delq 'new flags)))
(elmo-global-flags-set flags folder number message-id)
(elmo-msgdb-append-entity new-msgdb entity flags))
(elmo-progress-notify 'elmo-folder-msgdb-create)))
new-msgdb))
(defun elmo-maildir-cleanup-temporal (dir)
;; Delete files in the tmp dir which are not accessed
;; for more than 36 hours.
(let ((cur-time (current-time))
(count 0)
last-accessed)
(mapcar
(lambda (file)
(setq last-accessed (nth 4 (file-attributes file)))
(when (or (> (- (car cur-time)(car last-accessed)) 1)
(and (eq (- (car cur-time)(car last-accessed)) 1)
(> (- (cadr cur-time)(cadr last-accessed))
64064))) ; 36 hours.
(message "Maildir: %d tmp file(s) are cleared."
(setq count (1+ count)))
(delete-file file)))
(directory-files (expand-file-name "tmp" dir)
t ; full
"^[^.].*$" t))))
(defun elmo-maildir-update-current (folder)
"Move all new msgs to cur in the maildir."
(let* ((maildir (elmo-maildir-folder-directory-internal folder))
(news (directory-files (expand-file-name "new"
maildir)
nil
"^[^.].*$" t)))
;; cleanup tmp directory.
(elmo-maildir-cleanup-temporal maildir)
;; move new msgs to cur directory.
(while news
(rename-file
(expand-file-name (car news) (expand-file-name "new" maildir))
(expand-file-name (concat
(car news)
(unless (string-match
(elmo-maildir-adjust-separator ":2,[A-Z]*$")
(car news))
(elmo-maildir-adjust-separator ":2,")))
(expand-file-name "cur" maildir)))
(setq news (cdr news)))))
(defun elmo-maildir-set-mark (filename mark)
"Mark the FILENAME file in the maildir. MARK is a character."
(if (string-match
(elmo-maildir-adjust-separator "^\\(.+:[12],\\)\\(.*\\)$")
filename)
(let ((flaglist (string-to-char-list (match-string 2 filename))))
(unless (memq mark flaglist)
(setq flaglist (sort (cons mark flaglist) '<))
(rename-file filename
(concat (match-string 1 filename)
(char-list-to-string flaglist)))))
;; Rescue no info file in maildir.
(rename-file filename
(concat filename
(elmo-maildir-adjust-separator ":2,")
(char-to-string mark))))
t)
(defun elmo-maildir-delete-mark (filename mark)
"Mark the FILENAME file in the maildir. MARK is a character."
(if (string-match (elmo-maildir-adjust-separator "^\\(.+:2,\\)\\(.*\\)$")
filename)
(let ((flaglist (string-to-char-list (match-string 2 filename))))
(when (memq mark flaglist)
(setq flaglist (delq mark flaglist))
(rename-file filename
(concat (match-string 1 filename)
(if flaglist
(char-list-to-string flaglist))))))))
(defsubst elmo-maildir-set-mark-msgs (folder locs mark)
(dolist (loc locs)
(elmo-maildir-set-mark
(elmo-maildir-message-file-name folder loc)
mark))
t)
(defsubst elmo-maildir-delete-mark-msgs (folder locs mark)
(dolist (loc locs)
(elmo-maildir-delete-mark
(elmo-maildir-message-file-name folder loc)
mark))
t)
(defsubst elmo-maildir-set-mark-messages (folder locations mark remove)
(when mark
(if remove
(elmo-maildir-delete-mark-msgs folder locations mark)
(elmo-maildir-set-mark-msgs folder locations mark))))
(luna-define-method elmo-map-folder-set-flag ((folder elmo-maildir-folder)
locations flag)
(let ((spec (cdr (assq flag elmo-maildir-flag-specs))))
(when spec
(elmo-maildir-set-mark-messages folder locations
(car spec) (nth 1 spec)))))
(luna-define-method elmo-map-folder-unset-flag ((folder elmo-maildir-folder)
locations flag)
(let ((spec (cdr (assq flag elmo-maildir-flag-specs))))
(when spec
(elmo-maildir-set-mark-messages folder locations
(car spec) (not (nth 1 spec))))))
(luna-define-method elmo-folder-list-subfolders
((folder elmo-maildir-folder) &optional one-level)
(let ((prefix (concat (elmo-folder-name-internal folder)
(unless (string= (elmo-folder-prefix-internal folder)
(elmo-folder-name-internal folder))
elmo-path-sep)))
(elmo-list-subdirectories-ignore-regexp
"^\\(\\.\\.?\\|cur\\|tmp\\|new\\)$")
elmo-have-link-count)
(append
(list (elmo-folder-name-internal folder))
(elmo-mapcar-list-of-list
(function (lambda (x) (concat prefix x)))
(elmo-list-subdirectories
(elmo-maildir-folder-directory-internal folder)
""
one-level)))))
(defvar elmo-maildir-sequence-number-internal 0)
(defun elmo-maildir-sequence-number (file)
"Get `elmo-maildir' specific sequence number from FILE.
Not that FILE is the name without directory."
;; elmo-maildir specific.
(if (string-match "^.*_\\([0-9]+\\)\\..*" file)
(string-to-number (match-string 1 file))
-1))
(defun elmo-maildir-make-unique-string ()
"This function generates a string that can be used as a unique
file name for maildir directories."
(let ((cur-time (current-time)))
(format "%.0f.%d_%d.%s"
(+ (* (car cur-time)
(float 65536)) (cadr cur-time))
(emacs-pid)
(incf elmo-maildir-sequence-number-internal)
(system-name))))
(defun elmo-maildir-temporal-filename (basedir)
(let ((filename (expand-file-name
(concat "tmp/" (elmo-maildir-make-unique-string))
basedir)))
(unless (file-exists-p (file-name-directory filename))
(make-directory (file-name-directory filename)))
(while (file-exists-p filename)
;;; I don't want to wait.
;;; (sleep-for 2)
(setq filename
(expand-file-name
(concat "tmp/" (elmo-maildir-make-unique-string))
basedir)))
filename))
(defun elmo-maildir-move-file (src dst)
(or (condition-case nil
(progn
;; 1. Try add-link-to-file, then delete the original.
;; This is safe on NFS.
(add-name-to-file src dst)
(ignore-errors
;; It's ok if the delete-file fails;
;; elmo-maildir-cleanup-temporal will catch it later.
(delete-file src))
t)
(error))
;; 2. Even on systems with hardlinks, some filesystems (like AFS)
;; might not support them, so fall back on rename-file. This is
;; our best shot at atomic when add-name-to-file fails.
(rename-file src dst)))
(luna-define-method elmo-folder-append-buffer ((folder elmo-maildir-folder)
&optional flags number
return-number)
(let ((basedir (elmo-maildir-folder-directory-internal folder))
(src-buf (current-buffer))
(number (elmo-folder-next-message-number folder))
dst-buf filename)
(condition-case nil
(with-temp-buffer
(setq filename (elmo-maildir-temporal-filename basedir))
(setq dst-buf (current-buffer))
(with-current-buffer src-buf
(copy-to-buffer dst-buf (point-min) (point-max)))
(as-binary-output-file
(write-region (point-min) (point-max) filename nil 'no-msg))
(elmo-maildir-move-file
filename
(expand-file-name
(concat "new/" (file-name-nondirectory filename))
basedir))
(elmo-folder-preserve-flags
folder (elmo-msgdb-get-message-id-from-buffer) flags)
(if return-number number t))
;; If an error occured, return nil.
(error))))
(luna-define-method elmo-folder-message-file-p ((folder elmo-maildir-folder))
t)
(luna-define-method elmo-message-file-name ((folder elmo-maildir-folder)
number)
(elmo-maildir-message-file-name
folder
(elmo-map-message-location folder number)))
(luna-define-method elmo-folder-message-make-temp-file-p
((folder elmo-maildir-folder))
t)
(luna-define-method elmo-folder-message-make-temp-files ((folder
elmo-maildir-folder)
numbers
&optional
start-number)
(let ((temp-dir (elmo-folder-make-temporary-directory folder))
(cur-number (or start-number 0)))
(dolist (number numbers)
(elmo-copy-file
(elmo-message-file-name folder number)
(expand-file-name
(number-to-string (if start-number cur-number number))
temp-dir))
(incf cur-number))
temp-dir))
(defun elmo-folder-append-messages-*-maildir (folder
src-folder
numbers
same-number)
(let ((src-msgdb-exists (not (zerop (elmo-folder-length src-folder))))
(dir (elmo-maildir-folder-directory-internal folder))
(table (elmo-folder-flag-table folder))
(succeeds numbers)
filename flags id)
(dolist (number numbers)
(setq flags (elmo-message-flags src-folder number)
filename (elmo-maildir-temporal-filename dir))
(elmo-copy-file
(elmo-message-file-name src-folder number)
filename)
(elmo-maildir-move-file
filename
(expand-file-name
(concat "new/" (file-name-nondirectory filename))
dir))
;; src folder's msgdb is loaded.
(when (setq id (and src-msgdb-exists
(elmo-message-field src-folder number
'message-id)))
(elmo-flag-table-set table id flags))
(elmo-progress-notify 'elmo-folder-move-messages))
(when (elmo-folder-persistent-p folder)
(elmo-folder-close-flag-table folder))
succeeds))
(luna-define-method elmo-map-folder-delete-messages
((folder elmo-maildir-folder) locations)
(let (file)
(dolist (location locations)
(setq file (elmo-maildir-message-file-name folder location))
(if (and file
(file-writable-p file)
(not (file-directory-p file)))
(delete-file file))))
t)
(luna-define-method elmo-map-message-fetch ((folder elmo-maildir-folder)
location strategy
&optional section unseen)
(let ((file (elmo-maildir-message-file-name folder location)))
(unless (stringp file)
(error "Unable to fetch message %s from maildir folder" location))
(when (file-exists-p file)
(insert-file-contents-as-raw-text file)
(unless unseen
(elmo-map-folder-set-flag folder (list location) 'read))
t)))
(luna-define-method elmo-folder-exists-p ((folder elmo-maildir-folder))
(let ((basedir (elmo-maildir-folder-directory-internal folder)))
(and (file-directory-p (expand-file-name "new" basedir))
(file-directory-p (expand-file-name "cur" basedir))
(file-directory-p (expand-file-name "tmp" basedir)))))
(luna-define-method elmo-folder-diff ((folder elmo-maildir-folder))
(let* ((dir (elmo-maildir-folder-directory-internal folder))
(new-len (length (car (elmo-maildir-list-location dir "new"))))
(cur-len (length (car (elmo-maildir-list-location dir "cur")))))
(cons new-len (+ new-len cur-len))))
(luna-define-method elmo-folder-creatable-p ((folder elmo-maildir-folder))
t)
(luna-define-method elmo-folder-writable-p ((folder elmo-maildir-folder))
t)
(luna-define-method elmo-folder-create ((folder elmo-maildir-folder))
(let ((basedir (elmo-maildir-folder-directory-internal folder)))
(condition-case nil
(progn
(dolist (dir '("." "new" "cur" "tmp"))
(setq dir (expand-file-name dir basedir))
(or (file-directory-p dir)
(progn
(elmo-make-directory dir)
(set-file-modes dir 448))))
t)
(error))))
(luna-define-method elmo-folder-delete ((folder elmo-maildir-folder))
(let ((msgs (and (elmo-folder-exists-p folder)
(elmo-folder-list-messages folder))))
(when (yes-or-no-p (format "%sDelete msgdb and substance of \"%s\"? "
(if (> (length msgs) 0)
(format "%d msg(s) exists. " (length msgs))
"")
(elmo-folder-name-internal folder)))
(let ((basedir (elmo-maildir-folder-directory-internal folder)))
(condition-case nil
(let ((tmp-files (directory-files
(expand-file-name "tmp" basedir)
t "[^.].*")))
;; Delete files in tmp.
(dolist (file tmp-files)
(delete-file file))
(dolist (dir '("new" "cur" "tmp" "."))
(setq dir (expand-file-name dir basedir))
(if (not (file-directory-p dir))
(error nil)
(elmo-delete-directory dir t))))
(error nil)))
(elmo-msgdb-delete-path folder)
t)))
(luna-define-method elmo-folder-rename-internal ((folder elmo-maildir-folder)
new-folder)
(let* ((old (elmo-maildir-folder-directory-internal folder))
(new (elmo-maildir-folder-directory-internal new-folder))
(new-dir (directory-file-name (file-name-directory new))))
(unless (file-directory-p old)
(error "No such directory: %s" old))
(when (file-exists-p new)
(error "Already exists directory: %s" new))
(unless (file-directory-p new-dir)
(elmo-make-directory new-dir))
(rename-file old new)
t))
(require 'product)
(product-provide (provide 'elmo-maildir) (require 'elmo-version))
;;; elmo-maildir.el ends here
|