+\f
+;;;
+;;; Browse Server Mode
+;;;
+
+(defvar gnus-browse-menu-hook nil
+ "*Hook run after the creation of the browse mode menu.")
+
+(defvar gnus-browse-mode-hook nil)
+(defvar gnus-browse-mode-map nil)
+(put 'gnus-browse-mode 'mode-class 'special)
+
+(unless gnus-browse-mode-map
+ (setq gnus-browse-mode-map (make-keymap))
+ (suppress-keymap gnus-browse-mode-map)
+
+ (gnus-define-keys
+ gnus-browse-mode-map
+ " " gnus-browse-read-group
+ "=" gnus-browse-select-group
+ "n" gnus-browse-next-group
+ "p" gnus-browse-prev-group
+ "\177" gnus-browse-prev-group
+ "N" gnus-browse-next-group
+ "P" gnus-browse-prev-group
+ "\M-n" gnus-browse-next-group
+ "\M-p" gnus-browse-prev-group
+ "\r" gnus-browse-select-group
+ "u" gnus-browse-unsubscribe-current-group
+ "l" gnus-browse-exit
+ "L" gnus-browse-exit
+ "q" gnus-browse-exit
+ "Q" gnus-browse-exit
+ "\C-c\C-c" gnus-browse-exit
+ "?" gnus-browse-describe-briefly
+
+ "\C-c\C-i" gnus-info-find-node
+ "\C-c\C-b" gnus-bug))
+
+(defun gnus-browse-make-menu-bar ()
+ (gnus-turn-off-edit-menu 'browse)
+ (unless (boundp 'gnus-browse-menu)
+ (easy-menu-define
+ gnus-browse-menu gnus-browse-mode-map ""
+ '("Browse"
+ ["Subscribe" gnus-browse-unsubscribe-current-group t]
+ ["Read" gnus-browse-read-group t]
+ ["Select" gnus-browse-read-group t]
+ ["Next" gnus-browse-next-group t]
+ ["Prev" gnus-browse-next-group t]
+ ["Exit" gnus-browse-exit t]
+ ))
+ (run-hooks 'gnus-browse-menu-hook)))
+
+(defvar gnus-browse-current-method nil)
+(defvar gnus-browse-return-buffer nil)
+
+(defvar gnus-browse-buffer "*Gnus Browse Server*")
+
+(defun gnus-browse-foreign-server (method &optional return-buffer)
+ "Browse the server METHOD."
+ (setq gnus-browse-current-method method)
+ (setq gnus-browse-return-buffer return-buffer)
+ (let ((gnus-select-method method)
+ groups group)
+ (gnus-message 5 "Connecting to %s..." (nth 1 method))
+ (cond
+ ((not (gnus-check-server method))
+ (gnus-message
+ 1 "Unable to contact server: %s" (gnus-status-message method))
+ nil)
+ ((not
+ (prog2
+ (gnus-message 6 "Reading active file...")
+ (gnus-request-list method)
+ (gnus-message 6 "Reading active file...done")))
+ (gnus-message
+ 1 "Couldn't request list: %s" (gnus-status-message method))
+ nil)
+ (t
+ (get-buffer-create gnus-browse-buffer)
+ (gnus-add-current-to-buffer-list)
+ (when gnus-carpal
+ (gnus-carpal-setup-buffer 'browse))
+ (gnus-configure-windows 'browse)
+ (buffer-disable-undo (current-buffer))
+ (let ((buffer-read-only nil))
+ (erase-buffer))
+ (gnus-browse-mode)
+ (setq mode-line-buffer-identification
+ (list
+ (format
+ "Gnus: %%b {%s:%s}" (car method) (cadr method))))
+ (save-excursion
+ (set-buffer nntp-server-buffer)
+ (let ((cur (current-buffer)))
+ (goto-char (point-min))
+ (unless (string= gnus-ignored-newsgroups "")
+ (delete-matching-lines gnus-ignored-newsgroups))
+ (while (re-search-forward
+ "\\(^[^ \t]+\\)[ \t]+[0-9]+[ \t]+[0-9]+" nil t)
+ (goto-char (match-end 1))
+ (push (cons (match-string 1)
+ (max 0 (- (1+ (read cur)) (read cur))))
+ groups))))
+ (setq groups (sort groups
+ (lambda (l1 l2)
+ (string< (car l1) (car l2)))))
+ (let ((buffer-read-only nil))
+ (while groups
+ (setq group (car groups))
+ (insert
+ (format "K%7d: %s\n" (cdr group) (car group)))
+ (setq groups (cdr groups))))
+ (switch-to-buffer (current-buffer))
+ (goto-char (point-min))
+ (gnus-group-position-point)
+ (gnus-message 5 "Connecting to %s...done" (nth 1 method))
+ t))))
+
+(defun gnus-browse-mode ()
+ "Major mode for browsing a foreign server.
+
+All normal editing commands are switched off.
+
+\\<gnus-browse-mode-map>
+The only things you can do in this buffer is
+
+1) `\\[gnus-browse-unsubscribe-current-group]' to subscribe to a group.
+The group will be inserted into the group buffer upon exit from this
+buffer.
+
+2) `\\[gnus-browse-read-group]' to read a group ephemerally.
+
+3) `\\[gnus-browse-exit]' to return to the group buffer."
+ (interactive)
+ (kill-all-local-variables)
+ (when (gnus-visual-p 'browse-menu 'menu)
+ (gnus-browse-make-menu-bar))
+ (gnus-simplify-mode-line)
+ (setq major-mode 'gnus-browse-mode)
+ (setq mode-name "Browse Server")
+ (setq mode-line-process nil)
+ (use-local-map gnus-browse-mode-map)
+ (buffer-disable-undo (current-buffer))
+ (setq truncate-lines t)
+ (gnus-set-default-directory)
+ (setq buffer-read-only t)
+ (run-hooks 'gnus-browse-mode-hook))
+
+(defun gnus-browse-read-group (&optional no-article)
+ "Enter the group at the current line."
+ (interactive)
+ (let ((group (gnus-group-real-name (gnus-browse-group-name))))
+ (unless (gnus-group-read-ephemeral-group
+ group gnus-browse-current-method nil
+ (cons (current-buffer) 'browse))
+ (error "Couldn't enter %s" group))))
+
+(defun gnus-browse-select-group ()
+ "Select the current group."
+ (interactive)
+ (gnus-browse-read-group 'no))
+
+(defun gnus-browse-next-group (n)
+ "Go to the next group."
+ (interactive "p")
+ (prog1
+ (forward-line n)
+ (gnus-group-position-point)))
+
+(defun gnus-browse-prev-group (n)
+ "Go to the next group."
+ (interactive "p")
+ (gnus-browse-next-group (- n)))
+
+(defun gnus-browse-unsubscribe-current-group (arg)
+ "(Un)subscribe to the next ARG groups."
+ (interactive "p")
+ (when (eobp)
+ (error "No group at current line."))
+ (let ((ward (if (< arg 0) -1 1))
+ (arg (abs arg)))
+ (while (and (> arg 0)
+ (not (eobp))
+ (gnus-browse-unsubscribe-group)
+ (zerop (gnus-browse-next-group ward)))
+ (decf arg))
+ (gnus-group-position-point)
+ (when (/= 0 arg)
+ (gnus-message 7 "No more newsgroups"))
+ arg))
+
+(defun gnus-browse-group-name ()
+ (save-excursion
+ (beginning-of-line)
+ (when (re-search-forward ": \\(.*\\)$" (gnus-point-at-eol) t)
+ (gnus-group-prefixed-name (match-string 1) gnus-browse-current-method))))
+
+(defun gnus-browse-unsubscribe-group ()
+ "Toggle subscription of the current group in the browse buffer."
+ (let ((sub nil)
+ (buffer-read-only nil)
+ group)
+ (save-excursion
+ (beginning-of-line)
+ ;; If this group it killed, then we want to subscribe it.
+ (when (= (following-char) ?K)
+ (setq sub t))
+ (setq group (gnus-browse-group-name))
+ ;; Make sure the group has been properly removed before we
+ ;; subscribe to it.
+ (gnus-kill-ephemeral-group group)
+ (delete-char 1)
+ (if sub
+ (progn
+ (gnus-group-change-level
+ (list t group gnus-level-default-subscribed
+ nil nil gnus-browse-current-method)
+ gnus-level-default-subscribed gnus-level-killed
+ (and (car (nth 1 gnus-newsrc-alist))
+ (gnus-gethash (car (nth 1 gnus-newsrc-alist))
+ gnus-newsrc-hashtb))
+ t)
+ (insert ? ))
+ (gnus-group-change-level
+ group gnus-level-killed gnus-level-default-subscribed)
+ (insert ?K)))
+ t))
+
+(defun gnus-browse-exit ()
+ "Quit browsing and return to the group buffer."
+ (interactive)
+ (when (eq major-mode 'gnus-browse-mode)
+ (kill-buffer (current-buffer)))
+ ;; Insert the newly subscribed groups in the group buffer.
+ (save-excursion
+ (set-buffer gnus-group-buffer)
+ (gnus-group-list-groups nil))
+ (if gnus-browse-return-buffer
+ (gnus-configure-windows 'server 'force)
+ (gnus-configure-windows 'group 'force)))
+
+(defun gnus-browse-describe-briefly ()
+ "Give a one line description of the group mode commands."
+ (interactive)
+ (gnus-message 6
+ (substitute-command-keys "\\<gnus-browse-mode-map>\\[gnus-group-next-group]:Forward \\[gnus-group-prev-group]:Backward \\[gnus-browse-exit]:Exit \\[gnus-info-find-node]:Run Info \\[gnus-browse-describe-briefly]:This help")))
+
+(defun gnus-server-regenerate-server ()
+ "Issue a command to the server to regenerate all its data structures."
+ (interactive)
+ (let ((server (gnus-server-server-name)))
+ (unless server
+ (error "No server on the current line"))
+ (if (not (gnus-check-backend-function
+ 'request-regenerate (car (gnus-server-to-method server))))
+ (error "This backend doesn't support regeneration")
+ (gnus-message 5 "Requesting regeneration of %s..." server)
+ (if (gnus-request-regenerate server)
+ (gnus-message 5 "Requesting regeneration of %s...done" server)
+ (gnus-message 5 "Couldn't regenerate %s" server)))))
+
+(provide 'gnus-srvr)
+