1 ;;; muse-protocols.el --- URL protocols that Muse recognizes.
3 ;; Copyright (C) 2005 Free Software Foundation, Inc.
5 ;; This file is free software; you can redistribute it and/or modify
6 ;; it under the terms of the GNU General Public License as published by
7 ;; the Free Software Foundation; either version 2, or (at your option)
10 ;; This file is distributed in the hope that it will be useful,
11 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
12 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 ;; GNU General Public License for more details.
15 ;; You should have received a copy of the GNU General Public License
16 ;; along with GNU Emacs; see the file COPYING. If not, write to the
17 ;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
18 ;; Boston, MA 02110-1301, USA.
22 ;; Here's an example for adding a protocol for the site yubnub, a Web
23 ;; Command line service.
25 ;; (add-to-list 'muse-url-protocols '("yubnub://" muse-browse-url-yubnub
26 ;; muse-resolve-url-yubnub))
28 ;; (defun muse-resolve-url-yubnub (url)
29 ;; "Resolve a yubnub URL."
30 ;; ;; Remove the yubnub://
31 ;; (when (string-match "\\`yubnub://\\(.+\\)" url)
34 ;; (defun muse-browse-url-yubnub (url)
35 ;; "If this is a yubnub URL-command, jump to it."
36 ;; (setq url (muse-resolve-url-yubnub url))
37 ;; (browse-url (concat "http://yubnub.org/parser/parse?command="
42 ;; Brad Collins (brad AT chenla DOT org) created the initial version
47 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
51 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
54 (require 'muse-regexps
)
56 (defvar muse-url-regexp nil
57 "A regexp used to match URLs within a Muse page.
58 This is autogenerated from `muse-url-protocols'.")
60 (defun muse-update-url-regexp (sym value
)
62 (concat "\\<\\(" (mapconcat 'car value
"\\|") "\\)"
63 "[^][" muse-regexp-space
"\"'()<>^`{}]*"
64 "[^][" muse-regexp-space
"\"'()<>^`{}.,;]+"))
67 (defcustom muse-url-protocols
68 '(("info://" muse-browse-url-info nil
)
69 ("man://" muse-browse-url-man nil
)
70 ("google://" muse-browse-url-google muse-resolve-url-google
)
71 ("http:/?/?" browse-url identity
)
72 ("https:/?/?" browse-url identity
)
73 ("ftp:/?/?" browse-url identity
)
74 ("gopher://" browse-url identity
)
75 ("telnet://" browse-url identity
)
76 ("wais://" browse-url identity
)
77 ("file://?" browse-url identity
)
78 ("news:" browse-url identity
)
79 ("snews:" browse-url identity
)
80 ("mailto:" browse-url identity
))
81 "A list of (PROTOCOL BROWSE-FUN RESOLVE-FUN) used to match URL protocols.
82 PROTOCOL describes the first part of the URL, including the
83 \"://\" part. This may be a regexp.
85 BROWSE-FUN should accept URL as an argument and open the URL in
88 RESOLVE-FUN should accept URL as an argument and return the final
89 URL, or nil if no URL should be included."
90 :type
'(repeat (list :tag
"Protocol"
91 (string :tag
"Regexp")
92 (function :tag
"Browse")
93 (function :tag
"Resolve")))
94 :set
'muse-update-url-regexp
97 (defun muse-protocol-find (proto list
)
98 "Return the first element of LIST whose car matches the regexp PROTO."
99 (setq list
(copy-alist list
))
102 (when (string-match (caar list
) proto
)
103 (setq entry
(car list
)
105 (setq list
(cdr list
)))
108 (defun muse-browse-url (url &optional other-window
)
109 "Handle URL with the function specified in `muse-url-protocols'.
110 If OTHER-WINDOW is non-nil, open in a different window."
111 (interactive (list (read-string "URL: ")
113 ;; Strip text properties
114 (when (fboundp 'set-text-properties
)
115 (set-text-properties 0 (length url
) nil url
))
117 (switch-to-buffer-other-window (current-buffer)))
118 (when (string-match muse-url-regexp url
)
119 (let* ((proto (concat "\\`" (match-string 1 url
)))
120 (entry (muse-protocol-find proto muse-url-protocols
)))
122 (funcall (cadr entry
) url
)))))
124 (defun muse-resolve-url (url &rest ignored
)
125 "Resolve URL with the function specified in `muse-url-protocols'."
126 (when (string-match muse-url-regexp url
)
127 (let* ((proto (concat "\\`" (match-string 1 url
)))
128 (entry (muse-protocol-find proto muse-url-protocols
)))
130 (let ((func (car (cddr entry
))))
132 (setq url
(funcall func url
))
136 (defun muse-protocol-add (protocol browse-function resolve-function
)
137 "Add PROTOCOL to `muse-url-protocols'. PROTOCOL may be a regexp.
139 BROWSE-FUNCTION should be a function that visits a URL in the
142 RESOLVE-FUNCTION should be a function that transforms a URL for
143 publishing or returns nil if not linked."
144 (add-to-list 'muse-url-protocols
145 (list protocol browse-function resolve-function
))
146 (muse-update-url-regexp 'muse-url-protocols
149 (defun muse-resolve-url-google (url)
150 "Return the correct Google search string."
151 (when (string-match "\\`google:/?/?\\(.+\\)" url
)
152 (concat "http://www.google.com/search?q="
153 (match-string 1 url
))))
155 (defun muse-browse-url-google (url)
156 "If this is a Google URL, jump to it."
157 (let ((google-url (muse-resolve-url-google url
)))
159 (browse-url google-url
))))
161 (defun muse-browse-url-info (url)
162 "If this in an Info URL, jump to it."
165 ((string-match "\\`info://\\([^#]+\\)#\\(.+\\)" url
)
166 (Info-find-node (match-string 1 url
)
167 (match-string 2 url
)))
168 ((string-match "\\`info://\\([^#]+\\)" url
)
169 (Info-find-node (match-string 1 url
)
171 ((string-match "\\`info://(\\([^)]+\\))\\(.+\\)" url
)
172 (Info-find-node (match-string 1 url
) (match-string 2 url
)))
173 ((string-match "\\`info://\\(.+\\)" url
)
174 (Info-find-node (match-string 1 url
) "Top"))))
176 (defun muse-browse-url-man (url)
177 "If this in a manpage URL, jump to it."
178 (cond ((string-match "\\`man://\\(.+\\):\\(.+\\)" url
)
179 (manual-entry (concat (match-string 1 url
)
180 "(" (match-string 2 url
) ")")))
181 ((string-match "\\`man://\\(.+\\)" url
)
182 (manual-entry (concat (match-string 1 url
))))))
184 (provide 'muse-protocols
)
186 ;;; muse-protocols.el ends here