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 (elmo-localdir-folder-dir-name-internal folder)
  95                    "/"))
  96     "/")
  97    (expand-file-name ;;"localdir"
  98     (symbol-name (elmo-folder-type-internal folder))
  99     elmo-msgdb-directory)))
 100
 101 (luna-define-method elmo-message-file-name ((folder
 102                                              elmo-localdir-folder)
 103                                             number)
 104   (expand-file-name (int-to-string number)
 105                     (elmo-localdir-folder-directory-internal folder)))
 106
 107 (luna-define-method elmo-folder-message-file-number-p ((folder
 108                                                         elmo-localdir-folder))
 109   t)
 110
 111 (luna-define-method elmo-folder-message-file-directory ((folder
 112                                                          elmo-localdir-folder))
 113   (elmo-localdir-folder-directory-internal folder))
 114
 115 (luna-define-method elmo-folder-message-make-temp-file-p
 116   ((folder elmo-localdir-folder))
 117   t)
 118
 119 (luna-define-method elmo-folder-message-make-temp-files ((folder
 120                                                           elmo-localdir-folder)
 121                                                          numbers
 122                                                          &optional
 123                                                          start-number)
 124   (let ((temp-dir (elmo-folder-make-temporary-directory folder))
 125         (cur-number (or start-number 0)))
 126     (dolist (number numbers)
 127       (elmo-copy-file
 128        (expand-file-name
 129         (int-to-string number)
 130         (elmo-localdir-folder-directory-internal folder))
 131        (expand-file-name
 132         (int-to-string (if start-number cur-number number))
 133         temp-dir))
 134       (incf cur-number))
 135     temp-dir))
 136
 137 (defun elmo-localdir-msgdb-create-entity (dir number)
 138   (elmo-msgdb-create-overview-entity-from-file
 139    number (expand-file-name (int-to-string number) dir)))
 140
 141 (luna-define-method elmo-folder-msgdb-create ((folder elmo-localdir-folder)
 142                                               numbers
 143                                               new-mark
 144                                               already-mark
 145                                               seen-mark
 146                                               important-mark
 147                                               seen-list)
 148   (when numbers
 149     (let ((dir (elmo-localdir-folder-directory-internal folder))
 150           overview number-alist mark-alist entity message-id
 151           num seen 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         (if (null entity)
 160             ()
 161           (setq num (elmo-msgdb-overview-entity-get-number entity))
 162           (setq overview
 163                 (elmo-msgdb-append-element
 164                  overview entity))
 165           (setq message-id (elmo-msgdb-overview-entity-get-id entity))
 166           (setq number-alist
 167                 (elmo-msgdb-number-add number-alist
 168                                        num
 169                                        message-id))
 170           (setq seen (member message-id seen-list))
 171           (if (setq gmark (or (elmo-msgdb-global-mark-get message-id)
 172                               (if (elmo-file-cache-exists-p message-id) ; XXX
 173                                   (if seen
 174                                       nil
 175                                     already-mark)
 176                                 (if seen
 177                                     nil ;;seen-mark
 178                                   new-mark))))
 179               (setq mark-alist
 180                     (elmo-msgdb-mark-append
 181                      mark-alist
 182                      num
 183                      gmark))))
 184         (when (> len elmo-display-progress-threshold)
 185           (setq i (1+ i))
 186           (elmo-display-progress
 187            'elmo-localdir-msgdb-create-as-numbers "Creating msgdb..."
 188            (/ (* i 100) len)))
 189         (setq numbers (cdr numbers)))
 190       (message "Creating msgdb...done")
 191       (list overview number-alist mark-alist))))
 192
 193 (luna-define-method elmo-folder-list-subfolders ((folder elmo-localdir-folder)
 194                                                  &optional one-level)
 195   (elmo-mapcar-list-of-list
 196    (lambda (x) (concat (elmo-folder-prefix-internal folder) x))
 197    (elmo-list-subdirectories
 198     (elmo-localdir-folder-path folder)
 199     (or (elmo-localdir-folder-dir-name-internal folder) "")
 200     one-level)))
 201
 202 (defsubst elmo-localdir-list-subr (folder &optional nonsort)
 203   (let ((flist (mapcar 'string-to-int
 204                        (directory-files
 205                         (elmo-localdir-folder-directory-internal folder)
 206                         nil "^[0-9]+$" t)))
 207         (killed (elmo-msgdb-killed-list-load (elmo-folder-msgdb-path folder))))
 208     (if nonsort
 209         (cons (or (elmo-max-of-list flist) 0)
 210               (if killed
 211                   (- (length flist)
 212                      (elmo-msgdb-killed-list-length killed))
 213                 (length flist)))
 214       (sort flist '<))))
 215
 216 (luna-define-method elmo-folder-append-buffer ((folder elmo-localdir-folder)
 217                                                unread
 218                                                &optional number)
 219   (let ((filename (elmo-message-file-name
 220                    folder
 221                    (or number
 222                        (1+ (car (elmo-folder-status folder)))))))
 223     (when (file-writable-p filename)
 224       (write-region-as-binary
 225        (point-min) (point-max) filename nil 'no-msg)
 226       t)))
 227
 228 (luna-define-method elmo-folder-append-messages :around
 229   ((folder elmo-localdir-folder)
 230    src-folder numbers unread-marks &optional same-number)
 231   (if (elmo-folder-message-file-p src-folder)
 232       (let ((dir (elmo-localdir-folder-directory-internal folder))
 233             (succeeds numbers)
 234             (next-num (1+ (car (elmo-folder-status folder)))))
 235         (while numbers
 236           (elmo-copy-file
 237            (elmo-message-file-name src-folder (car numbers))
 238            (expand-file-name
 239             (int-to-string
 240              (if same-number (car numbers) next-num))
 241             dir))
 242           (elmo-progress-notify 'elmo-folder-move-messages)
 243           (if (and (setq numbers (cdr numbers))
 244                    (not same-number))
 245               (setq next-num
 246                     (if (elmo-localdir-locked-p)
 247                         ;; MDA is running.
 248                         (1+ (car (elmo-folder-status folder)))
 249                       (1+ next-num)))))
 250         succeeds)
 251     (luna-call-next-method)))
 252
 253 (luna-define-method elmo-folder-delete-messages ((folder elmo-localdir-folder)
 254                                                  numbers)
 255   (dolist (number numbers)
 256     (elmo-localdir-delete-message folder number))
 257   t)
 258
 259 (defun elmo-localdir-delete-message (folder number)
 260   "Delete message in the FOLDER with NUMBER."
 261   (let ((filename (elmo-message-file-name folder number)))
 262     (when (and (string-match "[0-9]+" filename) ; for safety.
 263                (file-exists-p filename)
 264                (file-writable-p filename)
 265                (not (file-directory-p filename)))
 266       (delete-file filename)
 267       t)))
 268
 269 (luna-define-method elmo-message-fetch-internal ((folder elmo-localdir-folder)
 270                                                  number strategy
 271                                                  &optional section unread)
 272   (when (file-exists-p (elmo-message-file-name folder number))
 273     (insert-file-contents-as-binary
 274      (elmo-message-file-name folder number))))
 275
 276 (luna-define-method elmo-folder-list-messages-internal
 277   ((folder elmo-localdir-folder) &optional nohide)
 278   (elmo-localdir-list-subr folder))
 279
 280 (luna-define-method elmo-folder-status ((folder elmo-localdir-folder))
 281   (elmo-localdir-list-subr folder t))
 282
 283 (luna-define-method elmo-folder-creatable-p ((folder elmo-localdir-folder))
 284   t)
 285
 286 (luna-define-method elmo-folder-writable-p ((folder elmo-localdir-folder))
 287   t)
 288
 289 (luna-define-method elmo-folder-create ((folder elmo-localdir-folder))
 290   (let ((dir (elmo-localdir-folder-directory-internal folder)))
 291     (if (file-directory-p dir)
 292         ()
 293       (if (file-exists-p dir)
 294           (error "Create folder failed")
 295         (elmo-make-directory dir))
 296       t)))
 297
 298 (luna-define-method elmo-folder-delete :before ((folder elmo-localdir-folder))
 299   (let ((dir (elmo-localdir-folder-directory-internal folder)))
 300     (if (not (file-directory-p dir))
 301         (error "No such directory: %s" dir)
 302       (elmo-delete-match-files dir "[0-9]+" t)
 303       t)))
 304
 305 (luna-define-method elmo-folder-rename-internal ((folder elmo-localdir-folder)
 306                                                  new-folder)
 307   (let* ((old (elmo-localdir-folder-directory-internal folder))
 308          (new (elmo-localdir-folder-directory-internal new-folder))
 309          (new-dir (directory-file-name (file-name-directory new))))
 310     (if (not (file-directory-p old))
 311         (error "No such directory: %s" old)
 312       (if (file-exists-p new)
 313           (error "Already exists directory: %s" new)
 314         (if (not (file-exists-p new-dir))
 315             (elmo-make-directory new-dir))
 316         (rename-file old new)
 317         t))))
 318
 319 (defsubst elmo-localdir-field-condition-match (folder condition
 320                                                       number number-list)
 321   (elmo-file-field-condition-match
 322    (expand-file-name (int-to-string number)
 323                      (elmo-localdir-folder-directory-internal folder))
 324    condition number number-list))
 325
 326 (luna-define-method elmo-folder-pack-numbers ((folder elmo-localdir-folder))
 327   (let* ((dir (elmo-localdir-folder-directory-internal folder))
 328          (msgdb (elmo-folder-msgdb folder))
 329          (onum-alist (elmo-msgdb-get-number-alist msgdb))
 330          (omark-alist (elmo-msgdb-get-mark-alist msgdb))
 331          (new-number 1)                 ; first ordinal position in localdir
 332          flist onum mark new-mark-alist total)
 333     (setq flist
 334           (if elmo-pack-number-check-strict
 335               (elmo-folder-list-messages folder) ; allow localnews
 336             (mapcar 'car onum-alist)))
 337     (setq total (length flist))
 338     (while flist
 339       (when (> total elmo-display-progress-threshold)
 340         (elmo-display-progress
 341          'elmo-folder-pack-numbers "Packing..."
 342          (/ (* new-number 100) total)))
 343       (setq onum (car flist))
 344       (when (not (eq onum new-number))          ; why \=() is wrong..
 345         (elmo-bind-directory
 346          dir
 347          ;; xxx  nfs,hardlink
 348          (rename-file (int-to-string onum) (int-to-string new-number) t))
 349         ;; update overview
 350         (elmo-msgdb-overview-entity-set-number
 351          (elmo-msgdb-overview-get-entity onum msgdb)
 352          new-number)
 353         ;; update number-alist
 354         (setcar (assq onum onum-alist) new-number))
 355       ;; update mark-alist
 356       (when (setq mark (cadr (assq onum omark-alist)))
 357         (setq new-mark-alist
 358               (elmo-msgdb-mark-append
 359                new-mark-alist
 360                new-number mark)))
 361       (setq new-number (1+ new-number))
 362       (setq flist (cdr flist)))
 363     (message "Packing...done")
 364     (elmo-folder-set-msgdb-internal
 365      folder
 366      (elmo-make-msgdb
 367       (elmo-msgdb-get-overview msgdb)
 368       onum-alist
 369       new-mark-alist))))
 370
 371 (luna-define-method elmo-folder-message-file-p ((folder elmo-localdir-folder))
 372   t)
 373
 374 (luna-define-method elmo-message-file-name ((folder elmo-localdir-folder)
 375                                             number)
 376   (expand-file-name
 377    (int-to-string number)
 378    (elmo-localdir-folder-directory-internal folder)))
 379
 380 (defun elmo-localdir-locked-p ()
 381   (if elmo-localdir-lockfile-list
 382       (let ((lock elmo-localdir-lockfile-list))
 383         (catch 'found
 384           (while lock
 385             (if (file-exists-p (car lock))
 386                 (throw 'found t))
 387             (setq lock (cdr lock)))))))
 388
 389 (require 'product)
 390 (product-provide (provide 'elmo-localdir) (require 'elmo-version))
 391
 392 ;;; elmo-localdir.el ends here