summaryrefslogtreecommitdiff
path: root/lisp/net/eudc-hotlist.el
blob: a737a99ce95996ceb5c67d43aa5e053f451fdc74 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
;;; eudc-hotlist.el --- hotlist management for EUDC  -*- lexical-binding: t; -*-

;; Copyright (C) 1998-2021 Free Software Foundation, Inc.

;; Author: Oscar Figueiredo <oscar@cpe.fr>
;;         Pavel Janík <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-menu nil)
(defvar eudc-hotlist-list-beginning nil)

(defvar eudc-hotlist-mode-map
  (let ((map (make-sparse-keymap)))
    (define-key map "a" #'eudc-hotlist-add-server)
    (define-key map "d" #'eudc-hotlist-delete-server)
    (define-key map "s" #'eudc-hotlist-select-server)
    (define-key map "t" #'eudc-hotlist-transpose-servers)
    (define-key map "q" #'eudc-hotlist-quit-edit)
    (define-key map "x" #'kill-current-buffer)
    map))

(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:
    a -- Add a new server to the list.
    d -- Delete the server at point from the list.
    s -- Select the server at point.
    t -- Transpose the server at point and the previous one
    q -- Commit the changes and quit.
    x -- 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.el ends here