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;;; eudc-hotlist.el --- hotlist management for EUDC -*- lexical-binding: t; -*-
;; Copyright (C) 1998-2025 Free Software Foundation, Inc.
;; Author: Oscar Figueiredo <oscar@cpe.fr>
;; Pavel JanÃk <Pavel@Janik.cz>
;; Maintainer: Thomas Fitzsimmons <fitzsim@fitzsim.org>
;; Keywords: comm
;; Package: eudc
;; This file is part of GNU Emacs.
;; GNU Emacs is free software: you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
;; GNU General Public License for more details.
;; You should have received a copy of the GNU General Public License
;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;;; Usage:
;; See the corresponding info file
;;; Code:
(require 'eudc)
(defvar eudc-hotlist-list-beginning nil)
(defvar-keymap eudc-hotlist-mode-map
"a" #'eudc-hotlist-add-server
"d" #'eudc-hotlist-delete-server
"s" #'eudc-hotlist-select-server
"t" #'eudc-hotlist-transpose-servers
"q" #'eudc-hotlist-quit-edit
"x" #'kill-current-buffer)
(define-derived-mode eudc-hotlist-mode fundamental-mode "EUDC-Servers"
"Major mode used to edit the hotlist of servers.
These are the special commands of this mode:\\<eudc-hotlist-mode-map>
\\[eudc-hotlist-add-server] -- Add a new server to the list.
\\[eudc-hotlist-delete-server] -- Delete the server at point from the list.
\\[eudc-hotlist-select-server] -- Select the server at point.
\\[eudc-hotlist-transpose-servers] -- Transpose the server at point and the previous one
\\[eudc-hotlist-quit-edit] -- Commit the changes and quit.
\\[kill-current-buffer] -- Quit without committing the changes."
(setq buffer-read-only t))
;;;###autoload
(defun eudc-edit-hotlist ()
"Edit the hotlist of directory servers in a specialized buffer."
(interactive)
(let ((proto-col 10)
gap)
(switch-to-buffer (get-buffer-create "*EUDC Servers*"))
(setq buffer-read-only nil)
(erase-buffer)
(dolist (entry eudc-server-hotlist)
(setq proto-col (max (length (car entry)) proto-col)))
(setq proto-col (+ 3 proto-col))
(setq gap (make-string (- proto-col 6) ?\ ))
(insert " EUDC Servers\n"
" ============\n"
"\n"
"Server" gap "Protocol\n"
"------" gap "--------\n"
"\n")
(setq eudc-hotlist-list-beginning (point))
(dolist (entry eudc-server-hotlist)
(insert (car entry))
(indent-to proto-col)
(insert (symbol-name (cdr entry)) "\n"))
(eudc-hotlist-mode)))
(defun eudc-hotlist-add-server ()
"Add a new server to the list after current one."
(interactive)
(if (not (derived-mode-p 'eudc-hotlist-mode))
(error "Not in a EUDC hotlist edit buffer"))
(let ((server (read-from-minibuffer "Server: "))
(protocol (completing-read "Protocol: "
(mapcar (lambda (elt)
(cons (symbol-name elt)
elt))
eudc-known-protocols)))
(buffer-read-only nil))
(if (not (eobp))
(forward-line 1))
(insert server)
(indent-to 30)
(insert protocol "\n")))
(defun eudc-hotlist-delete-server ()
"Delete the server at point from the list."
(interactive)
(if (not (derived-mode-p 'eudc-hotlist-mode))
(error "Not in a EUDC hotlist edit buffer"))
(let ((buffer-read-only nil))
(save-excursion
(beginning-of-line)
(if (and (>= (point) eudc-hotlist-list-beginning)
(looking-at "^\\([-.a-zA-Z:0-9]+\\)[ \t]+\\([a-zA-Z]+\\)"))
(kill-line 1)
(error "No server on this line")))))
(defun eudc-hotlist-quit-edit ()
"Quit the hotlist editing mode and save changes to the hotlist."
(interactive)
(if (not (derived-mode-p 'eudc-hotlist-mode))
(error "Not in a EUDC hotlist edit buffer"))
(let (hotlist)
(goto-char eudc-hotlist-list-beginning)
(while (looking-at "^\\([-.a-zA-Z:0-9]+\\)[ \t]+\\([a-zA-Z]+\\)")
(setq hotlist (cons (cons (match-string 1)
(intern (match-string 2)))
hotlist))
(forward-line 1))
(if (not (looking-at "^[ \t]*$"))
(error "Malformed entry in hotlist, discarding edits"))
(setq eudc-server-hotlist (nreverse hotlist))
(eudc-install-menu)
(eudc-save-options)
(kill-this-buffer)))
(defun eudc-hotlist-select-server ()
"Select the server at point as the current server."
(interactive)
(if (not (derived-mode-p 'eudc-hotlist-mode))
(error "Not in a EUDC hotlist edit buffer"))
(save-excursion
(beginning-of-line)
(if (and (>= (point) eudc-hotlist-list-beginning)
(looking-at "^\\([-.a-zA-Z:0-9]+\\)[ \t]+\\([a-zA-Z]+\\)"))
(progn
(eudc-set-server (match-string 1) (intern (match-string 2)))
(message "Current directory server is %s (%s)" eudc-server eudc-protocol))
(error "No server on this line"))))
(defun eudc-hotlist-transpose-servers ()
"Swap the order of the server with the previous one in the list."
(interactive)
(if (not (derived-mode-p 'eudc-hotlist-mode))
(error "Not in a EUDC hotlist edit buffer"))
(let ((buffer-read-only nil))
(save-excursion
(beginning-of-line)
(if (and (>= (point) eudc-hotlist-list-beginning)
(looking-at "^\\([-.a-zA-Z:0-9]+\\)[ \t]+\\([a-zA-Z]+\\)")
(progn
(forward-line -1)
(looking-at "^\\([-.a-zA-Z:0-9]+\\)[ \t]+\\([a-zA-Z]+\\)")))
(progn
(forward-line 1)
(transpose-lines 1))))))
(defconst eudc-hotlist-menu
'("EUDC Hotlist Edit"
["---" nil nil]
["Add New Server" eudc-hotlist-add-server t]
["Delete Server" eudc-hotlist-delete-server t]
["Select Server" eudc-hotlist-select-server t]
["Transpose Servers" eudc-hotlist-transpose-servers t]
["Save and Quit" eudc-hotlist-quit-edit t]
["Exit without Saving" kill-this-buffer t]))
(easy-menu-define eudc-hotlist-emacs-menu eudc-hotlist-mode-map
"EUDC hotlist Menu."
eudc-hotlist-menu)
;;; eudc-hotlist.el ends here
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