elmo/elmo-localdir.el

   1 ;;; elmo-localdir.el --- Localdir Interface for ELMO.
   2
   3 ;; Copyright (C) 1998,1999,2000 Yuuichi Teranishi <teranisi@gohome.org>
   4 ;; Copyright (C) 1998,1999,2000 Masahiro MURATA <muse@ba2.so-net.ne.jp>
   5 ;; Copyright (C) 1999,2000      Kenichi OKADA  <okada@opaopa.org>
   6
   7 ;; Author: Yuuichi Teranishi <teranisi@gohome.org>
   8 ;;      Masahiro MURATA <muse@ba2.so-net.ne.jp>
   9 ;;      Kenichi OKADA <okada@opaopa.org>
  10 ;; Keywords: mail, net news
  11
  12 ;; This file is part of ELMO (Elisp Library for Message Orchestration).
  13
  14 ;; This program is free software; you can redistribute it and/or modify
  15 ;; it under the terms of the GNU General Public License as published by
  16 ;; the Free Software Foundation; either version 2, or (at your option)
  17 ;; any later version.
  18 ;;
  19 ;; This program is distributed in the hope that it will be useful,
  20 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  21 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  22 ;; GNU General Public License for more details.
  23 ;;
  24 ;; You should have received a copy of the GNU General Public License
  25 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  26 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  27 ;; Boston, MA 02111-1307, USA.
  28 ;;
  29
  30 ;;; Commentary:
  31 ;;
  32
  33 ;;; Code:
  34 ;;
  35 (eval-when-compile (require 'cl))
  36
  37 (require 'elmo-msgdb)
  38 (require 'elmo)
  39
  40 (defcustom elmo-localdir-folder-path "~/Mail"
  41   "*Local mail directory (MH format) path."
  42   :type 'directory
  43   :group 'elmo)
  44
  45 (defvar elmo-localdir-lockfile-list nil)
  46
  47 ;;; ELMO Local directory folder
  48 (eval-and-compile
  49   (luna-define-class elmo-localdir-folder (elmo-folder)
  50                      (dir-name directory))
  51   (luna-define-internal-accessors 'elmo-localdir-folder))
  52
  53 ;;; elmo-localdir specific methods.
  54 (luna-define-generic elmo-localdir-folder-path (folder)
  55   "Return local directory path of the FOLDER.")
  56
  57 (luna-define-generic elmo-localdir-folder-name (folder name)
  58   "Return directory NAME for FOLDER.")
  59
  60 (luna-define-method elmo-localdir-folder-path ((folder elmo-localdir-folder))
  61   elmo-localdir-folder-path)
  62
  63 (luna-define-method elmo-localdir-folder-name ((folder elmo-localdir-folder)
  64                                                name)
  65   name)
  66
  67 (luna-define-method elmo-folder-initialize ((folder
  68                                              elmo-localdir-folder)
  69                                             name)
  70   (elmo-localdir-folder-set-dir-name-internal folder name)
  71   (if (file-name-absolute-p name)
  72       (elmo-localdir-folder-set-directory-internal
  73        folder
  74        (expand-file-name name))
  75     (elmo-localdir-folder-set-directory-internal
  76      folder
  77      (expand-file-name
  78       (elmo-localdir-folder-name folder name)
  79       (elmo-localdir-folder-path folder))))
  80   folder)
  81
  82 ;; open, check, commit, and close are generic.
  83
  84 (luna-define-method elmo-folder-exists-p ((folder elmo-localdir-folder))
  85   (file-directory-p (elmo-localdir-folder-directory-internal folder)))
  86
  87 (luna-define-method elmo-folder-expand-msgdb-path ((folder
  88                                                     elmo-localdir-folder))
  89   (expand-file-name
  90    (mapconcat
  91     'identity
  92     (mapcar
  93      'elmo-replace-string-as-filename
  94      (split-string
  95       (let ((dir-name (elmo-localdir-folder-dir-name-internal folder)))
  96         (if (file-name-absolute-p dir-name)
  97             (expand-file-name dir-name)
  98           dir-name))
  99       "/"))
 100     "/")
 101    (expand-file-name ;;"localdir"
 102     (symbol-name (elmo-folder-type-internal folder))
 103     elmo-msgdb-directory)))
 104
 105 (luna-define-method elmo-message-file-name ((folder
 106                                              elmo-localdir-folder)
 107                                             number)
 108   (expand-file-name (int-to-string number)
 109                     (elmo-localdir-folder-directory-internal folder)))
 110
 111 (luna-define-method elmo-folder-message-file-number-p ((folder
 112                                                         elmo-localdir-folder))
 113   t)
 114
 115 (luna-define-method elmo-folder-message-file-directory ((folder
 116                                                          elmo-localdir-folder))
 117   (elmo-localdir-folder-directory-internal folder))
 118
 119 (luna-define-method elmo-folder-message-make-temp-file-p
 120   ((folder elmo-localdir-folder))
 121   t)
 122
 123 (luna-define-method elmo-folder-message-make-temp-files ((folder
 124                                                           elmo-localdir-folder)
 125                                                          numbers
 126                                                          &optional
 127                                                          start-number)
 128   (let ((temp-dir (elmo-folder-make-temporary-directory folder))
 129         (cur-number (or start-number 0)))
 130     (dolist (number numbers)
 131       (elmo-copy-file
 132        (expand-file-name
 133         (int-to-string number)
 134         (elmo-localdir-folder-directory-internal folder))
 135        (expand-file-name
 136         (int-to-string (if start-number cur-number number))
 137         temp-dir))
 138       (incf cur-number))
 139     temp-dir))
 140
 141 (defun elmo-localdir-msgdb-create-entity (dir number)
 142   (elmo-msgdb-create-overview-entity-from-file
 143    number (expand-file-name (int-to-string number) dir)))
 144
 145 (luna-define-method elmo-folder-msgdb-create ((folder elmo-localdir-folder)
 146                                               numbers
 147                                               flag-table)
 148   (when numbers
 149     (let ((dir (elmo-localdir-folder-directory-internal folder))
 150           (new-msgdb (elmo-make-msgdb))
 151           entity message-id gmark
 152           (i 0)
 153           (len (length numbers)))
 154       (message "Creating msgdb...")
 155       (while numbers
 156         (setq entity
 157               (elmo-localdir-msgdb-create-entity
 158                dir (car numbers)))
 159         (when entity
 160           (setq message-id (elmo-msgdb-overview-entity-get-id entity))
 161           (setq gmark (or (elmo-msgdb-global-mark-get message-id)
 162                           (unless (eq 'read (elmo-flag-table-get
 163                                              flag-table message-id))
 164                             (elmo-msgdb-mark
 165                              (elmo-flag-table-get flag-table message-id)
 166                              (elmo-file-cache-status
 167                               (elmo-file-cache-get message-id))
 168                              'new))))
 169           (elmo-msgdb-append-entity new-msgdb entity gmark))
 170         (when (> len elmo-display-progress-threshold)
 171           (setq i (1+ i))
 172           (elmo-display-progress
 173            'elmo-localdir-msgdb-create-as-numbers "Creating msgdb..."
 174            (/ (* i 100) len)))
 175         (setq numbers (cdr numbers)))
 176       (message "Creating msgdb...done")
 177       new-msgdb)))
 178
 179 (luna-define-method elmo-folder-list-subfolders ((folder elmo-localdir-folder)
 180                                                  &optional one-level)
 181   (elmo-mapcar-list-of-list
 182    (lambda (x) (concat (elmo-folder-prefix-internal folder) x))
 183    (elmo-list-subdirectories
 184     (elmo-localdir-folder-path folder)
 185     (or (elmo-localdir-folder-dir-name-internal folder) "")
 186     one-level)))
 187
 188 (defsubst elmo-localdir-list-subr (folder &optional nonsort)
 189   (let ((flist (mapcar 'string-to-int
 190                        (directory-files
 191                         (elmo-localdir-folder-directory-internal folder)
 192                         nil "^[0-9]+$" t)))
 193         (killed (elmo-msgdb-killed-list-load (elmo-folder-msgdb-path folder))))
 194     (if nonsort
 195         (cons (or (elmo-max-of-list flist) 0)
 196               (if killed
 197                   (- (length flist)
 198                      (elmo-msgdb-killed-list-length killed))
 199                 (length flist)))
 200       (sort flist '<))))
 201
 202 (luna-define-method elmo-folder-append-buffer ((folder elmo-localdir-folder)
 203                                                unread
 204                                                &optional number)
 205   (let ((filename (elmo-message-file-name
 206                    folder
 207                    (or number
 208                        (1+ (car (elmo-folder-status folder)))))))
 209     (when (file-writable-p filename)
 210       (write-region-as-binary
 211        (point-min) (point-max) filename nil 'no-msg)
 212       t)))
 213
 214 (luna-define-method elmo-folder-append-messages :around
 215   ((folder elmo-localdir-folder)
 216    src-folder numbers &optional same-number)
 217   (if (elmo-folder-message-file-p src-folder)
 218       (let ((src-msgdb-exists (not (zerop (elmo-folder-length src-folder))))
 219             (dir (elmo-localdir-folder-directory-internal folder))
 220             (table (elmo-flag-table-load (elmo-folder-msgdb-path folder)))
 221             (succeeds numbers)
 222             (next-num (1+ (car (elmo-folder-status folder))))
 223             mark flag id)
 224         (while numbers
 225           (setq mark (and src-msgdb-exists
 226                           (elmo-message-mark src-folder (car numbers)))
 227                 flag (cond
 228                       ((null mark) 'read)
 229                       ((member mark (elmo-msgdb-answered-marks))
 230                        'answered)
 231                       ;;
 232                       ((not (member mark (elmo-msgdb-unread-marks)))
 233                        'read)))
 234           (elmo-copy-file
 235            (elmo-message-file-name src-folder (car numbers))
 236            (expand-file-name
 237             (int-to-string
 238              (if same-number (car numbers) next-num))
 239             dir))
 240           ;; save flag-table only when src folder's msgdb is loaded.
 241           (when (setq id (and src-msgdb-exists
 242                               (elmo-message-field src-folder (car numbers)
 243                                                   'message-id)))
 244             (elmo-flag-table-set table id flag))
 245           (elmo-progress-notify 'elmo-folder-move-messages)
 246           (if (and (setq numbers (cdr numbers))
 247                    (not same-number))
 248               (setq next-num
 249                     (if (elmo-localdir-locked-p)
 250                         ;; MDA is running.
 251                         (1+ (car (elmo-folder-status folder)))
 252                       (1+ next-num)))))
 253         (when (elmo-folder-persistent-p folder)
 254           (elmo-flag-table-save (elmo-folder-msgdb-path folder) table))
 255         succeeds)
 256     (luna-call-next-method)))
 257
 258 (luna-define-method elmo-folder-delete-messages ((folder elmo-localdir-folder)
 259                                                  numbers)
 260   (dolist (number numbers)
 261     (elmo-localdir-delete-message folder number))
 262   t)
 263
 264 (defun elmo-localdir-delete-message (folder number)
 265   "Delete message in the FOLDER with NUMBER."
 266   (let ((filename (elmo-message-file-name folder number)))
 267     (when (and (string-match "[0-9]+" filename) ; for safety.
 268                (file-exists-p filename)
 269                (file-writable-p filename)
 270                (not (file-directory-p filename)))
 271       (delete-file filename)
 272       t)))
 273
 274 (luna-define-method elmo-message-fetch-internal ((folder elmo-localdir-folder)
 275                                                  number strategy
 276                                                  &optional section unread)
 277   (when (file-exists-p (elmo-message-file-name folder number))
 278     (insert-file-contents-as-binary
 279      (elmo-message-file-name folder number))))
 280
 281 (luna-define-method elmo-folder-list-messages-internal
 282   ((folder elmo-localdir-folder) &optional nohide)
 283   (elmo-localdir-list-subr folder))
 284
 285 (luna-define-method elmo-folder-status ((folder elmo-localdir-folder))
 286   (elmo-localdir-list-subr folder t))
 287
 288 (luna-define-method elmo-folder-creatable-p ((folder elmo-localdir-folder))
 289   t)
 290
 291 (luna-define-method elmo-folder-writable-p ((folder elmo-localdir-folder))
 292   t)
 293
 294 (luna-define-method elmo-folder-create ((folder elmo-localdir-folder))
 295   (let ((dir (elmo-localdir-folder-directory-internal folder)))
 296     (if (file-directory-p dir)
 297         ()
 298       (if (file-exists-p dir)
 299           (error "Create folder failed")
 300         (elmo-make-directory dir))
 301       t)))
 302
 303 (luna-define-method elmo-folder-delete ((folder elmo-localdir-folder))
 304   (let ((msgs (and (elmo-folder-exists-p folder)
 305                    (elmo-folder-list-messages folder))))
 306     (when (yes-or-no-p (format "%sDelete msgdb and substance of \"%s\"? "
 307                                (if (> (length msgs) 0)
 308                                    (format "%d msg(s) exists. " (length msgs))
 309                                  "")
 310                                (elmo-folder-name-internal folder)))
 311       (let ((dir (elmo-localdir-folder-directory-internal folder)))
 312         (if (not (file-directory-p dir))
 313             (error "No such directory: %s" dir)
 314           (elmo-delete-match-files dir "[0-9]+" t)))
 315       (elmo-msgdb-delete-path folder)
 316       t)))
 317
 318 (luna-define-method elmo-folder-rename-internal ((folder elmo-localdir-folder)
 319                                                  new-folder)
 320   (let* ((old (elmo-localdir-folder-directory-internal folder))
 321          (new (elmo-localdir-folder-directory-internal new-folder))
 322          (new-dir (directory-file-name (file-name-directory new))))
 323     (unless (file-directory-p old)
 324       (error "No such directory: %s" old))
 325     (when (file-exists-p new)
 326       (error "Already exists directory: %s" new))
 327     (unless (file-directory-p new-dir)
 328       (elmo-make-directory new-dir))
 329     (rename-file old new)
 330     t))
 331
 332 (defsubst elmo-localdir-field-condition-match (folder condition
 333                                                       number number-list)
 334   (elmo-file-field-condition-match
 335    (expand-file-name (int-to-string number)
 336                      (elmo-localdir-folder-directory-internal folder))
 337    condition number number-list))
 338
 339 (luna-define-method elmo-folder-pack-numbers ((folder elmo-localdir-folder))
 340   (let* ((dir (elmo-localdir-folder-directory-internal folder))
 341          (msgdb (elmo-folder-msgdb folder))
 342          (onum-alist (elmo-msgdb-get-number-alist msgdb))
 343          (omark-alist (elmo-msgdb-get-mark-alist msgdb))
 344          (new-number 1)                 ; first ordinal position in localdir
 345          flist onum mark new-mark-alist total)
 346     (setq flist
 347           (if elmo-pack-number-check-strict
 348               (elmo-folder-list-messages folder) ; allow localnews
 349             (mapcar 'car onum-alist)))
 350     (setq total (length flist))
 351     (while flist
 352       (when (> total elmo-display-progress-threshold)
 353         (elmo-display-progress
 354          'elmo-folder-pack-numbers "Packing..."
 355          (/ (* new-number 100) total)))
 356       (setq onum (car flist))
 357       (when (not (eq onum new-number))          ; why \=() is wrong..
 358         (elmo-bind-directory
 359          dir
 360          ;; xxx  nfs,hardlink
 361          (rename-file (int-to-string onum) (int-to-string new-number) t))
 362         ;; update overview
 363         (elmo-msgdb-overview-entity-set-number
 364          (elmo-msgdb-overview-get-entity onum msgdb)
 365          new-number)
 366         ;; update number-alist
 367         (and (assq onum onum-alist)
 368              (setcar (assq onum onum-alist) new-number)))
 369       ;; update mark-alist
 370       (when (setq mark (cadr (assq onum omark-alist)))
 371         (setq new-mark-alist
 372               (elmo-msgdb-mark-append
 373                new-mark-alist
 374                new-number mark)))
 375       (setq new-number (1+ new-number))
 376       (setq flist (cdr flist)))
 377     (message "Packing...done")
 378     (elmo-folder-set-msgdb-internal
 379      folder
 380      (elmo-make-msgdb
 381       (elmo-msgdb-get-overview msgdb)
 382       onum-alist
 383       new-mark-alist))))
 384
 385 (luna-define-method elmo-folder-message-file-p ((folder elmo-localdir-folder))
 386   t)
 387
 388 (luna-define-method elmo-message-file-name ((folder elmo-localdir-folder)
 389                                             number)
 390   (expand-file-name
 391    (int-to-string number)
 392    (elmo-localdir-folder-directory-internal folder)))
 393
 394 (defun elmo-localdir-locked-p ()
 395   (if elmo-localdir-lockfile-list
 396       (let ((lock elmo-localdir-lockfile-list))
 397         (catch 'found
 398           (while lock
 399             (if (file-exists-p (car lock))
 400                 (throw 'found t))
 401             (setq lock (cdr lock)))))))
 402
 403 (require 'product)
 404 (product-provide (provide 'elmo-localdir) (require 'elmo-version))
 405
 406 ;;; elmo-localdir.el ends here