+(defmacro gnus-namazu/lock-file-name (&optional directory)
+ `(expand-file-name "NMZ.lock2" ,directory))
+
+(defmacro gnus-namazu/status-file-name (&optional directory)
+ `(expand-file-name "NMZ.status" ,directory))
+
+(defmacro gnus-namazu/index-file-name (&optional directory)
+ `(expand-file-name "NMZ.i" ,directory))
+
+(defun gnus-namazu/mknmz-cleanup (directory)
+ (let ((lockfile (gnus-namazu/lock-file-name directory)))
+ (when (file-exists-p lockfile)
+ (delete-file lockfile)
+ (dolist (tmpfile (directory-files directory t "\\`NMZ\\..*\\.tmp\\'" t))
+ (delete-file tmpfile)))))
+
+;;;###autoload
+(defun gnus-namazu-create-index (directory &optional target-directories force)
+ "Create index under DIRECTORY."
+ (interactive
+ (list
+ (if (and current-prefix-arg (> (length gnus-namazu-index-directories) 1))
+ (completing-read "Directory: "
+ (mapcar 'list gnus-namazu-index-directories) nil t)
+ (gnus-namazu/default-index-directory))
+ nil t))
+ (setq directory (file-name-as-directory (expand-file-name directory)))
+ (unless target-directories
+ (setq target-directories
+ (delq nil
+ (mapcar (lambda (dir)
+ (when (file-directory-p dir) dir))
+ (append
+ (mapcar 'gnus-namazu/server-directory
+ (gnus-namazu/indexed-servers))
+ (list
+ (expand-file-name gnus-cache-directory)
+ (expand-file-name gnus-agent-directory)))))))
+ (if (file-exists-p (gnus-namazu/lock-file-name directory))
+ (when force
+ (error "Found lock file: %s" (gnus-namazu/lock-file-name directory)))
+ (with-current-buffer
+ (get-buffer-create (concat " *mknmz*" directory))
+ (erase-buffer)
+ (unless (file-directory-p directory)
+ (make-directory directory t))
+ (setq default-directory directory)
+ (let ((args (append gnus-namazu-make-index-arguments
+ target-directories)))
+ (insert "% " gnus-namazu-make-index-command " "
+ (mapconcat 'identity args " ") "\n")
+ (goto-char (point-max))
+ (when force
+ (pop-to-buffer (current-buffer)))
+ (message "Make index at %s..." directory)
+ (unwind-protect
+ (apply 'call-process gnus-namazu-make-index-command nil t t args)
+ (gnus-namazu/mknmz-cleanup directory))
+ (message "Make index at %s...done" directory)
+ (unless force
+ (kill-buffer (current-buffer)))))))
+
+(defun gnus-namazu/lapse-seconds (start end)
+ "Return lapse seconds from START to END.
+START and END are lists which represent time in Emacs-style."
+ (+ (* (- (car end) (car start)) 65536)
+ (cadr end)
+ (- (cadr start))))
+
+(defun gnus-namazu/index-old-p (directory)
+ "Return non-nil value when the index under the DIRECTORY is older
+than the period that is set to `gnus-namazu-index-update-interval'"
+ (let ((file (gnus-namazu/index-file-name directory)))
+ (or (not (file-exists-p file))
+ (and (integerp gnus-namazu-index-update-interval)
+ (>= (gnus-namazu/lapse-seconds
+ (nth 5 (file-attributes file))
+ (current-time))
+ gnus-namazu-index-update-interval)))))
+
+(defvar gnus-namazu/update-directories nil)
+(defvar gnus-namazu/update-process nil)
+
+(defun gnus-namazu/update-p (directory &optional force)
+ "Return the DIRECTORY when the index undef the DIRECTORY should be updated."
+ (setq directory (file-name-as-directory (expand-file-name directory)))
+ (labels ((error-message (format &rest args)
+ (apply (if force 'error 'message) format args)
+ nil))
+ (if gnus-namazu/update-process
+ (error-message "%s" "Can not run two update processes simultaneously")
+ (and (or force
+ (gnus-namazu/index-old-p directory))
+ (let ((status-file (gnus-namazu/status-file-name directory)))
+ (or (file-exists-p status-file)
+ (error-message "Can not find status file: %s" status-file)))
+ (let ((lock-file (gnus-namazu/lock-file-name directory)))
+ (or (not (file-exists-p lock-file))
+ (error-message "Found lock file: %s" lock-file)))
+ directory))))
+
+;;;###autoload
+(defun gnus-namazu-update-index (directory &optional force)
+ "Update the index under the DIRECTORY."
+ (interactive
+ (list
+ (if (and current-prefix-arg (> (length gnus-namazu-index-directories) 1))
+ (completing-read "Directory: "
+ (mapcar 'list gnus-namazu-index-directories) nil t)
+ (gnus-namazu/default-index-directory))
+ t))
+ (when (setq directory (gnus-namazu/update-p directory force))
+ (with-current-buffer (get-buffer-create (concat " *mknmz*" directory))
+ (buffer-disable-undo)
+ (erase-buffer)
+ (unless (file-directory-p directory)
+ (make-directory directory t))
+ (setq default-directory directory)
+ (let ((proc (start-process gnus-namazu-make-index-command
+ (current-buffer)
+ gnus-namazu-make-index-command
+ (format "--update=%s" directory))))
+ (if (processp proc)
+ (prog1 (setq gnus-namazu/update-process proc)
+ (process-kill-without-query proc)
+ (set-process-sentinel proc 'gnus-namazu/update-sentinel)
+ (add-hook 'kill-emacs-hook 'gnus-namazu-stop-update)
+ (message "Update index at %s..." directory))
+ (goto-char (point-min))
+ (if (re-search-forward "^ERROR:.*$" nil t)
+ (progn
+ (pop-to-buffer (current-buffer))
+ (funcall (if force 'error 'message)
+ "Update index at %s...%s" directory (match-string 0)))
+ (kill-buffer (current-buffer))
+ (funcall (if force 'error 'message)
+ "Can not start %s" gnus-namazu-make-index-command))
+ nil)))))
+
+;;;###autoload
+(defun gnus-namazu-update-all-indices (&optional directories force)
+ "Update all indices which is set to `gnus-namazu-index-directories'."
+ (interactive (list nil t))
+ (when (setq directories
+ (delq nil (mapcar
+ (lambda (d) (gnus-namazu/update-p d force))
+ (or directories gnus-namazu-index-directories))))
+ (setq gnus-namazu/update-directories (cdr directories))
+ (gnus-namazu-update-index (car directories))))
+
+(defun gnus-namazu/update-sentinel (process event)
+ (let ((buffer (process-buffer process)))
+ (when (buffer-name buffer)
+ (with-current-buffer buffer
+ (gnus-namazu/mknmz-cleanup default-directory)
+ (goto-char (point-min))
+ (cond
+ ((re-search-forward "^ERROR:.*$" nil t)
+ (pop-to-buffer (current-buffer))
+ (message "Update index at %s...%s"
+ default-directory (match-string 0))
+ (setq gnus-namazu/update-directories nil))
+ ((and (eq 'exit (process-status process))
+ (zerop (process-exit-status process)))
+ (message "Update index at %s...done" default-directory)
+ (unless (or debug-on-error debug-on-quit)
+ (kill-buffer buffer)))))))
+ (setq gnus-namazu/update-process nil)
+ (when gnus-namazu/update-directories
+ (gnus-namazu-update-all-indices gnus-namazu/update-directories)))
+
+;;;###autoload
+(defun gnus-namazu-stop-update ()
+ "Stop the running indexer of Namazu."
+ (interactive)
+ (setq gnus-namazu/update-directories nil)
+ (and gnus-namazu/update-process
+ (processp gnus-namazu/update-process)
+ (kill-process gnus-namazu/update-process)))
+
+(let (current-load-list)
+ (defadvice gnus-offer-save-summaries
+ (before gnus-namazu-kill-summary-buffers activate compile)
+ "Advised by `gnus-namazu'.
+In order to avoid annoying questions, kill summary buffers which
+generated by `gnus-namazu' itself before `gnus-offer-save-summaries'
+is called."
+ (let ((buffers (buffer-list)))
+ (while buffers
+ (when (with-current-buffer (car buffers)
+ (and (eq major-mode 'gnus-summary-mode)
+ (gnus-ephemeral-group-p gnus-newsgroup-name)
+ (string-match gnus-namazu/group-name-regexp
+ gnus-newsgroup-name)))
+ (kill-buffer (car buffers)))
+ (setq buffers (cdr buffers))))))
+
+;;;###autoload