+(require 'mime)
+
+(defcustom elmo-msgdb-new-mark "N"
+ "Mark for new message."
+ :type '(string :tag "Mark")
+ :group 'elmo)
+
+(defcustom elmo-msgdb-unread-uncached-mark "U"
+ "Mark for unread and uncached message."
+ :type '(string :tag "Mark")
+ :group 'elmo)
+
+(defcustom elmo-msgdb-unread-cached-mark "!"
+ "Mark for unread but already cached message."
+ :type '(string :tag "Mark")
+ :group 'elmo)
+
+(defcustom elmo-msgdb-read-uncached-mark "u"
+ "Mark for read but uncached message."
+ :type '(string :tag "Mark")
+ :group 'elmo)
+
+(defcustom elmo-msgdb-answered-cached-mark "&"
+ "Mark for answered and cached message."
+ :type '(string :tag "Mark")
+ :group 'elmo)
+
+(defcustom elmo-msgdb-answered-uncached-mark "A"
+ "Mark for answered but cached message."
+ :type '(string :tag "Mark")
+ :group 'elmo)
+
+(defcustom elmo-msgdb-important-mark "$"
+ "Mark for important message."
+ :type '(string :tag "Mark")
+ :group 'elmo)
+
+;;; MSGDB interface.
+;;
+;; MSGDB elmo-load-msgdb PATH
+;; MARK elmo-msgdb-get-mark MSGDB NUMBER
+
+;; CACHED elmo-msgdb-get-cached MSGDB NUMBER
+;; VOID elmo-msgdb-set-cached MSGDB NUMBER CACHED USE-CACHE
+;; VOID elmo-msgdb-set-flag MSGDB FOLDER NUMBER FLAG
+;; VOID elmo-msgdb-unset-flag MSGDB FOLDER NUMBER FLAG
+
+;; LIST-OF-NUMBERS elmo-msgdb-count-marks MSGDB
+;; NUMBER elmo-msgdb-get-number MSGDB MESSAGE-ID
+;; FIELD-VALUE elmo-msgdb-get-field MSGDB NUMBER FIELD
+;; MSGDB elmo-msgdb-append MSGDB MSGDB-APPEND
+;; MSGDB elmo-msgdb-clear MSGDB
+;; elmo-msgdb-delete-msgs MSGDB NUMBERS
+;; elmo-msgdb-sort-by-date MSGDB
+
+;;;
+;; LIST-OF-NUMBERS elmo-msgdb-list-messages MSGDB
+
+;; elmo-flag-table-load
+;; elmo-flag-table-set
+;; elmo-flag-table-get
+;; elmo-flag-table-save
+
+;; elmo-msgdb-append-entity MSGDB ENTITY MARK-OR-FLAGS
+
+;; ENTITY elmo-msgdb-make-entity ARGS
+;; VALUE elmo-msgdb-entity-field ENTITY
+;;
+
+;; OVERVIEW elmo-msgdb-get-overview MSGDB
+;; NUMBER-ALIST elmo-msgdb-get-number-alist MSGDB
+;; MARK-ALIST elmo-msgdb-get-mark-alist MSGDB
+;; elmo-msgdb-change-mark MSGDB BEFORE AFTER
+
+;; (for internal use?)
+;; LIST-OF-MARKS elmo-msgdb-unread-marks
+;; LIST-OF-MARKS elmo-msgdb-answered-marks
+;; LIST-OF-MARKS elmo-msgdb-uncached-marks
+;; elmo-msgdb-overview-save DIR OBJ
+
+;; elmo-msgdb-message-entity MSGDB KEY
+
+;;; Abolish
+;; elmo-msgdb-overview-entity-get-references ENTITY
+;; elmo-msgdb-overview-entity-set-references ENTITY
+;; elmo-msgdb-get-parent-entity ENTITY MSGDB
+;; elmo-msgdb-overview-enitty-get-number ENTITY
+;; elmo-msgdb-overview-enitty-get-from-no-decode ENTITY
+;; elmo-msgdb-overview-enitty-get-from ENTITY
+;; elmo-msgdb-overview-enitty-get-subject-no-decode ENTITY
+;; elmo-msgdb-overview-enitty-get-subject ENTITY
+;; elmo-msgdb-overview-enitty-get-date ENTITY
+;; elmo-msgdb-overview-enitty-get-to ENTITY
+;; elmo-msgdb-overview-enitty-get-cc ENTITY
+;; elmo-msgdb-overview-enitty-get-size ENTITY
+;; elmo-msgdb-overview-enitty-get-id ENTITY
+;; elmo-msgdb-overview-enitty-get-extra-field ENTITY
+;; elmo-msgdb-overview-enitty-get-extra ENTITY
+;; elmo-msgdb-overview-get-entity ID MSGDB
+
+;; elmo-msgdb-killed-list-load DIR
+;; elmo-msgdb-killed-list-save DIR
+;; elmo-msgdb-append-to-killed-list FOLDER MSG
+;; elmo-msgdb-killed-list-length KILLED-LIST
+;; elmo-msgdb-max-of-killed KILLED-LIST
+;; elmo-msgdb-killed-message-p KILLED-LIST MSG
+;; elmo-living-messages MESSAGES KILLED-LIST
+;; elmo-msgdb-finfo-load
+;; elmo-msgdb-finfo-save
+;; elmo-msgdb-flist-load
+;; elmo-msgdb-flist-save
+
+;; elmo-crosspost-alist-load
+;; elmo-crosspost-alist-save
+
+;; elmo-msgdb-create-overview-from-buffer NUMBER SIZE TIME
+;; elmo-msgdb-copy-overview-entity ENTITY
+;; elmo-msgdb-create-overview-entity-from-file NUMBER FILE
+;; elmo-msgdb-overview-sort-by-date OVERVIEW
+;; elmo-msgdb-clear-index
+
+;; elmo-folder-get-info
+;; elmo-folder-get-info-max
+;; elmo-folder-get-info-length
+;; elmo-folder-get-info-unread
+
+;; elmo-msgdb-list-flagged MSGDB FLAG
+;; (MACRO) elmo-msgdb-do-each-entity
+
+(defun elmo-load-msgdb (path)
+ "Load the MSGDB from PATH."
+ (let ((inhibit-quit t))
+ (elmo-make-msgdb (elmo-msgdb-overview-load path)
+ (elmo-msgdb-number-load path)
+ (elmo-msgdb-mark-load path)
+ path)))
+
+(defun elmo-make-msgdb (&optional overview number-alist mark-alist path)
+ "Make a MSGDB."
+ (let ((msgdb (list overview number-alist mark-alist nil path)))
+ (elmo-msgdb-make-index msgdb)
+ msgdb))
+
+(defun elmo-msgdb-list-messages (msgdb-or-path)
+ "Return a list of message numbers in the msgdb.
+If MSGDB-OR-PATH is a msgdb structure, use it as a msgdb.
+If argument is a string, use it as a path to load message entities."
+ (mapcar 'elmo-msgdb-overview-entity-get-number
+ (if (stringp msgdb-or-path)
+ (elmo-msgdb-overview-load msgdb-or-path)
+ (elmo-msgdb-get-overview msgdb-or-path))))
+
+(defsubst elmo-msgdb-mark-to-flags (mark)
+ (append
+ (and (string= mark elmo-msgdb-new-mark)
+ '(new))
+ (and (string= mark elmo-msgdb-important-mark)
+ '(important))
+ (and (member mark (elmo-msgdb-unread-marks))
+ '(unread))
+ (and (member mark (elmo-msgdb-answered-marks))
+ '(answered))
+ (and (not (member mark (elmo-msgdb-uncached-marks)))
+ '(cached))))
+
+(defsubst elmo-msgdb-flags-to-mark (flags cached use-cache)
+ (cond ((memq 'new flags)
+ elmo-msgdb-new-mark)
+ ((memq 'important flags)
+ elmo-msgdb-important-mark)
+ ((memq 'answered flags)
+ (if cached
+ elmo-msgdb-answered-cached-mark
+ elmo-msgdb-answered-uncached-mark))
+ ((memq 'unread flags)
+ (if cached
+ elmo-msgdb-unread-cached-mark
+ elmo-msgdb-unread-uncached-mark))
+ (t
+ (if (or cached (not use-cache))
+ nil
+ elmo-msgdb-read-uncached-mark))))
+
+(defsubst elmo-msgdb-get-mark (msgdb number)
+ "Get mark string from MSGDB which corresponds to the message with NUMBER."
+ (cadr (elmo-get-hash-val (format "#%d" number)
+ (elmo-msgdb-get-mark-hashtb msgdb))))
+
+(defsubst elmo-msgdb-set-mark (msgdb number mark)
+ "Set MARK of the message with NUMBER in the MSGDB.
+if MARK is nil, mark is removed."
+ (let ((elem (elmo-get-hash-val (format "#%d" number)
+ (elmo-msgdb-get-mark-hashtb msgdb))))
+ (if elem
+ (if mark
+ ;; Set mark of the elem
+ (setcar (cdr elem) mark)
+ ;; Delete elem from mark-alist
+ (elmo-msgdb-set-mark-alist
+ msgdb
+ (delq elem (elmo-msgdb-get-mark-alist msgdb)))
+ (elmo-clear-hash-val (format "#%d" number)
+ (elmo-msgdb-get-mark-hashtb msgdb)))
+ (when mark
+ ;; Append new element.
+ (elmo-msgdb-set-mark-alist
+ msgdb
+ (nconc
+ (elmo-msgdb-get-mark-alist msgdb)
+ (list (setq elem (list number mark)))))
+ (elmo-set-hash-val (format "#%d" number) elem
+ (elmo-msgdb-get-mark-hashtb msgdb))))
+ ;; return value.
+ t))
+
+(defun elmo-msgdb-get-cached (msgdb number)
+ "Return non-nil if message is cached."
+ (not (member (elmo-msgdb-get-mark msgdb number)
+ (elmo-msgdb-uncached-marks))))
+
+(defun elmo-msgdb-set-cached (msgdb number cached use-cache)
+ "Set message cache status.
+If mark is changed, return non-nil."
+ (let* ((cur-mark (elmo-msgdb-get-mark msgdb number))
+ (cur-flag (cond
+ ((string= cur-mark elmo-msgdb-important-mark)
+ 'important)
+ ((member cur-mark (elmo-msgdb-answered-marks))
+ 'answered)
+ ((not (member cur-mark (elmo-msgdb-unread-marks)))
+ 'read)))
+ (cur-cached (elmo-file-cache-exists-p
+ (elmo-msgdb-get-field msgdb number 'message-id))))
+ (unless (eq cached cur-cached)
+ (case cur-flag
+ (read
+ (elmo-msgdb-set-mark msgdb number
+ (if (and use-cache (not cached))
+ elmo-msgdb-read-uncached-mark)))
+ (important nil)
+ (answered
+ (elmo-msgdb-set-mark msgdb number
+ (if cached
+ elmo-msgdb-answered-cached-mark
+ elmo-msgdb-answered-uncached-mark)))
+ (t
+ (elmo-msgdb-set-mark msgdb number
+ (if cached
+ elmo-msgdb-unread-cached-mark
+ elmo-msgdb-unread-uncached-mark)))))))
+
+(defun elmo-msgdb-set-flag (msgdb folder number flag)
+ "Set message flag.
+MSGDB is the ELMO msgdb.
+FOLDER is a ELMO folder structure.
+NUMBER is a message number to set flag.
+FLAG is a symbol which is one of the following:
+`read' ... Messages which are already read.
+`important' ... Messages which are marked as important.
+`answered' ... Messages which are marked as answered."
+ (let* ((cur-mark (elmo-msgdb-get-mark msgdb number))
+ (use-cache (elmo-message-use-cache-p folder number))
+ (cur-flag (cond
+ ((string= cur-mark elmo-msgdb-important-mark)
+ 'important)
+ ((member cur-mark (elmo-msgdb-answered-marks))
+ 'answered)
+ ((not (member cur-mark (elmo-msgdb-unread-marks)))
+ 'read)))
+ (cur-cached (elmo-file-cache-exists-p
+ (elmo-msgdb-get-field msgdb number 'message-id)))
+ mark-modified)
+ (case flag
+ (read
+ (case cur-flag
+ ((read important)) ; answered mark is overriden.
+ (t (elmo-msgdb-set-mark msgdb number
+ (if (and use-cache (not cur-cached))
+ elmo-msgdb-read-uncached-mark))
+ (setq mark-modified t))))
+ (important
+ (unless (eq cur-flag 'important)
+ (elmo-msgdb-set-mark msgdb number elmo-msgdb-important-mark)
+ (setq mark-modified t)))
+ (answered
+ (unless (or (eq cur-flag 'answered) (eq cur-flag 'important))
+ (elmo-msgdb-set-mark msgdb number
+ (if cur-cached
+ elmo-msgdb-answered-cached-mark
+ elmo-msgdb-answered-uncached-mark)))
+ (setq mark-modified t)))
+ (if mark-modified (elmo-folder-set-mark-modified-internal folder t))))
+
+(defun elmo-msgdb-unset-flag (msgdb folder number flag)
+ "Unset message flag.
+MSGDB is the ELMO msgdb.
+FOLDER is a ELMO folder structure.
+NUMBER is a message number to be set flag.
+FLAG is a symbol which is one of the following:
+`read' ... Messages which are already read.
+`important' ... Messages which are marked as important.
+`answered' ... Messages which are marked as answered."
+ (let* ((cur-mark (elmo-msgdb-get-mark msgdb number))
+ (use-cache (elmo-message-use-cache-p folder number))
+ (cur-flag (cond
+ ((string= cur-mark elmo-msgdb-important-mark)
+ 'important)
+ ((member cur-mark (elmo-msgdb-answered-marks))
+ 'answered)
+ ((not (member cur-mark (elmo-msgdb-unread-marks)))
+ 'read)))
+ (cur-cached (elmo-file-cache-exists-p
+ (elmo-msgdb-get-field msgdb number 'message-id)))
+ mark-modified)
+ (case flag
+ (read
+ (when (or (eq cur-flag 'read) (eq cur-flag 'answered))
+ (elmo-msgdb-set-mark msgdb number
+ (if cur-cached
+ elmo-msgdb-unread-cached-mark
+ elmo-msgdb-unread-uncached-mark))
+ (setq mark-modified t)))
+ (important
+ (when (eq cur-flag 'important)
+ (elmo-msgdb-set-mark msgdb number nil)
+ (setq mark-modified t)))
+ (answered
+ (when (eq cur-flag 'answered)
+ (elmo-msgdb-set-mark msgdb number
+ (if (and use-cache (not cur-cached))
+ elmo-msgdb-read-uncached-mark))
+ (setq mark-modified t))))
+ (if mark-modified (elmo-folder-set-mark-modified-internal folder t))))
+
+(defvar elmo-msgdb-unread-marks-internal nil)
+(defsubst elmo-msgdb-unread-marks ()
+ "Return an unread mark list"
+ (or elmo-msgdb-unread-marks-internal
+ (setq elmo-msgdb-unread-marks-internal
+ (list elmo-msgdb-new-mark
+ elmo-msgdb-unread-uncached-mark
+ elmo-msgdb-unread-cached-mark))))
+
+(defvar elmo-msgdb-answered-marks-internal nil)
+(defsubst elmo-msgdb-answered-marks ()
+ "Return an answered mark list"
+ (or elmo-msgdb-answered-marks-internal
+ (setq elmo-msgdb-answered-marks-internal
+ (list elmo-msgdb-answered-cached-mark
+ elmo-msgdb-answered-uncached-mark))))
+
+(defvar elmo-msgdb-uncached-marks-internal nil)
+(defsubst elmo-msgdb-uncached-marks ()
+ (or elmo-msgdb-uncached-marks-internal
+ (setq elmo-msgdb-uncached-marks-internal
+ (list elmo-msgdb-new-mark
+ elmo-msgdb-answered-uncached-mark
+ elmo-msgdb-unread-uncached-mark
+ elmo-msgdb-read-uncached-mark))))
+
+(defun elmo-msgdb-append-entity (msgdb entity &optional mark)
+ (when entity
+ (let ((number (elmo-msgdb-overview-entity-get-number entity))
+ (message-id (elmo-msgdb-overview-entity-get-id entity)))
+ (elmo-msgdb-set-overview
+ msgdb
+ (nconc (elmo-msgdb-get-overview msgdb)
+ (list entity)))
+ (elmo-msgdb-set-number-alist
+ msgdb
+ (nconc (elmo-msgdb-get-number-alist msgdb)
+ (list (cons number message-id))))
+ (when mark
+ (elmo-msgdb-set-mark-alist
+ msgdb
+ (nconc (elmo-msgdb-get-mark-alist msgdb)
+ (list (list number mark)))))
+ (elmo-msgdb-make-index
+ msgdb
+ (list entity)
+ (list (list number mark))))))
+
+(defsubst elmo-msgdb-get-number (msgdb message-id)
+ "Get number of the message which corrensponds to MESSAGE-ID from MSGDB."
+ (elmo-msgdb-overview-entity-get-number
+ (elmo-msgdb-overview-get-entity message-id msgdb)))
+
+(defsubst elmo-msgdb-get-field (msgdb number field)
+ "Get FIELD value of the message with NUMBER from MSGDB."
+ (case field
+ (message-id (elmo-msgdb-overview-entity-get-id
+ (elmo-msgdb-overview-get-entity
+ number msgdb)))
+ (subject (elmo-msgdb-overview-entity-get-subject
+ (elmo-msgdb-overview-get-entity
+ number msgdb)))
+ (size (elmo-msgdb-overview-entity-get-size
+ (elmo-msgdb-overview-get-entity
+ number msgdb)))
+ (date (elmo-msgdb-overview-entity-get-date
+ (elmo-msgdb-overview-get-entity
+ number msgdb)))
+ (to (elmo-msgdb-overview-entity-get-to
+ (elmo-msgdb-overview-get-entity
+ number msgdb)))
+ (cc (elmo-msgdb-overview-entity-get-cc
+ (elmo-msgdb-overview-get-entity
+ number msgdb)))))
+
+(defun elmo-msgdb-append (msgdb msgdb-append)
+ "Return a list of messages which have duplicated message-id."
+ (let (duplicates)
+ (elmo-msgdb-set-overview
+ msgdb
+ (nconc (elmo-msgdb-get-overview msgdb)
+ (elmo-msgdb-get-overview msgdb-append)))
+ (elmo-msgdb-set-number-alist
+ msgdb
+ (nconc (elmo-msgdb-get-number-alist msgdb)
+ (elmo-msgdb-get-number-alist msgdb-append)))
+ (elmo-msgdb-set-mark-alist
+ msgdb
+ (nconc (elmo-msgdb-get-mark-alist msgdb)
+ (elmo-msgdb-get-mark-alist msgdb-append)))
+ (setq duplicates (elmo-msgdb-make-index
+ msgdb
+ (elmo-msgdb-get-overview msgdb-append)
+ (elmo-msgdb-get-mark-alist msgdb-append)))
+ (elmo-msgdb-set-path
+ msgdb
+ (or (elmo-msgdb-get-path msgdb)
+ (elmo-msgdb-get-path msgdb-append)))
+ duplicates))
+
+(defun elmo-msgdb-merge (folder msgdb-merge)
+ "Return a list of messages which have duplicated message-id."
+ (let (msgdb duplicates)
+ (setq msgdb (or (elmo-folder-msgdb-internal folder)
+ (elmo-make-msgdb nil nil nil
+ (elmo-folder-msgdb-path folder))))
+ (elmo-msgdb-set-overview
+ msgdb
+ (nconc (elmo-msgdb-get-overview msgdb)
+ (elmo-msgdb-get-overview msgdb-merge)))
+ (elmo-msgdb-set-number-alist
+ msgdb
+ (nconc (elmo-msgdb-get-number-alist msgdb)
+ (elmo-msgdb-get-number-alist msgdb-merge)))
+ (elmo-msgdb-set-mark-alist
+ msgdb
+ (nconc (elmo-msgdb-get-mark-alist msgdb)
+ (elmo-msgdb-get-mark-alist msgdb-merge)))
+ (setq duplicates (elmo-msgdb-make-index
+ msgdb
+ (elmo-msgdb-get-overview msgdb-merge)
+ (elmo-msgdb-get-mark-alist msgdb-merge)))
+ (elmo-msgdb-set-path
+ msgdb
+ (or (elmo-msgdb-get-path msgdb)
+ (elmo-msgdb-get-path msgdb-merge)))
+ (elmo-folder-set-msgdb-internal folder msgdb)
+ duplicates))
+
+(defsubst elmo-msgdb-clear (&optional msgdb)
+ (if msgdb
+ (progn
+ (elmo-msgdb-set-overview msgdb nil)
+ (elmo-msgdb-set-number-alist msgdb nil)
+ (elmo-msgdb-set-mark-alist msgdb nil)
+ (elmo-msgdb-set-index msgdb nil)
+ msgdb)
+ (elmo-make-msgdb)))
+
+(defun elmo-msgdb-delete-msgs (msgdb msgs)
+ "Delete MSGS from MSGDB
+content of MSGDB is changed."
+ (let* ((overview (car msgdb))
+ (number-alist (cadr msgdb))
+ (mark-alist (caddr msgdb))
+ (index (elmo-msgdb-get-index msgdb))
+ (newmsgdb (list overview number-alist mark-alist index
+ (nth 4 msgdb)))
+ ov-entity)
+ ;; remove from current database.
+ (while msgs
+ (setq overview
+ (delq
+ (setq ov-entity
+ (elmo-msgdb-overview-get-entity (car msgs) newmsgdb))
+ overview))
+ (setq number-alist (delq (assq (car msgs) number-alist) number-alist))
+ (setq mark-alist (delq (assq (car msgs) mark-alist) mark-alist))
+ ;;
+ (when index (elmo-msgdb-clear-index msgdb ov-entity))
+ (setq msgs (cdr msgs)))
+ (elmo-msgdb-set-overview msgdb overview)
+ (elmo-msgdb-set-number-alist msgdb number-alist)
+ (elmo-msgdb-set-mark-alist msgdb mark-alist)
+ (elmo-msgdb-set-index msgdb index)
+ t)) ;return value
+
+(defun elmo-msgdb-sort-by-date (msgdb)
+ (message "Sorting...")
+ (let ((overview (elmo-msgdb-get-overview msgdb)))
+ (elmo-msgdb-set-overview
+ msgdb
+ (elmo-msgdb-overview-sort-by-date overview))
+ (message "Sorting...done")
+ msgdb))