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|
;;; muse-protocols.el --- URL protocols that Muse recognizes
;; Copyright (C) 2005, 2006, 2007, 2008, 2009, 2010
;; Free Software Foundation, Inc.
;; Author: Brad Collins (brad AT chenla DOT org)
;; This file is part of Emacs Muse. It is not part of GNU Emacs.
;; Emacs Muse 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, or (at your
;; option) any later version.
;; Emacs Muse 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 Emacs Muse; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.
;;; Commentary:
;; Here's an example for adding a protocol for the site yubnub, a Web
;; Command line service.
;;
;; (add-to-list 'muse-url-protocols '("yubnub://" muse-browse-url-yubnub
;; muse-resolve-url-yubnub))
;;
;; (defun muse-resolve-url-yubnub (url)
;; "Resolve a yubnub URL."
;; ;; Remove the yubnub://
;; (when (string-match "\\`yubnub://\\(.+\\)" url)
;; (match-string 1)))
;;
;; (defun muse-browse-url-yubnub (url)
;; "If this is a yubnub URL-command, jump to it."
;; (setq url (muse-resolve-url-yubnub url))
;; (browse-url (concat "http://yubnub.org/parser/parse?command="
;; url)))
;;; Contributors:
;; Phillip Lord (Phillip.Lord AT newcastle DOT ac DOT uk) provided a
;; handler for DOI URLs.
;; Stefan Schlee fixed a bug with handling of colons at the end of
;; URLs.
;; Valery V. Vorotyntsev contribued the woman:// protocol handler and
;; simplified `muse-browse-url-man'.
;;; Code:
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;;
;; Muse URL Protocols
;;
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(require 'info)
(require 'muse-regexps)
(defvar muse-url-regexp nil
"A regexp used to match URLs within a Muse page.
This is autogenerated from `muse-url-protocols'.")
(defun muse-update-url-regexp (sym value)
(setq muse-url-regexp
(concat "\\<\\(" (mapconcat 'car value "\\|") "\\)"
"[^][" muse-regexp-blank "\"'()<>^`{}\n]*"
"[^][" muse-regexp-blank "\"'()<>^`{}.,;:\n]+"))
(set sym value))
(defcustom muse-url-protocols
'(("[uU][rR][lL]:" muse-browse-url-url identity)
("info://" muse-browse-url-info nil)
("man://" muse-browse-url-man nil)
("woman://" muse-browse-url-woman nil)
("google://" muse-browse-url-google muse-resolve-url-google)
("http:/?/?" browse-url identity)
("https:/?/?" browse-url identity)
("ftp:/?/?" browse-url identity)
("gopher://" browse-url identity)
("telnet://" browse-url identity)
("wais://" browse-url identity)
("file://?" browse-url identity)
("dict:" muse-browse-url-dict muse-resolve-url-dict)
("doi:" muse-browse-url-doi muse-resolve-url-doi)
("news:" browse-url identity)
("snews:" browse-url identity)
("mailto:" browse-url identity))
"A list of (PROTOCOL BROWSE-FUN RESOLVE-FUN) used to match URL protocols.
PROTOCOL describes the first part of the URL, including the
\"://\" part. This may be a regexp.
BROWSE-FUN should accept URL as an argument and open the URL in
the current window.
RESOLVE-FUN should accept URL as an argument and return the final
URL, or nil if no URL should be included."
:type '(repeat (list :tag "Protocol"
(string :tag "Regexp")
(function :tag "Browse")
(choice (function :tag "Resolve")
(const :tag "Don't resolve" nil))))
:set 'muse-update-url-regexp
:group 'muse)
(add-hook 'muse-update-values-hook
(lambda ()
(muse-update-url-regexp 'muse-url-protocols muse-url-protocols)))
(defcustom muse-wikipedia-country "en"
"Indicate the 2-digit country code that we use for Wikipedia
queries."
:type 'string
:options '("de" "en" "es" "fr" "it" "pl" "pt" "ja" "nl" "sv")
:group 'muse)
(defun muse-protocol-find (proto list)
"Return the first element of LIST whose car matches the regexp PROTO."
(catch 'found
(dolist (item list)
(when (string-match (concat "\\`" (car item)) proto)
(throw 'found item)))))
;;;###autoload
(defun muse-browse-url (url &optional other-window)
"Handle URL with the function specified in `muse-url-protocols'.
If OTHER-WINDOW is non-nil, open in a different window."
(interactive (list (read-string "URL: ")
current-prefix-arg))
;; Strip text properties
(when (fboundp 'set-text-properties)
(set-text-properties 0 (length url) nil url))
(when other-window
(switch-to-buffer-other-window (current-buffer)))
(when (string-match muse-url-regexp url)
(let* ((proto (match-string 1 url))
(entry (muse-protocol-find proto muse-url-protocols)))
(when entry
(funcall (cadr entry) url)))))
(defun muse-resolve-url (url &rest ignored)
"Resolve URL with the function specified in `muse-url-protocols'."
(when (string-match muse-url-regexp url)
(let* ((proto (match-string 1 url))
(entry (muse-protocol-find proto muse-url-protocols)))
(when entry
(let ((func (car (cddr entry))))
(if func
(setq url (funcall func url))
(setq url nil))))))
url)
(defun muse-protocol-add (protocol browse-function resolve-function)
"Add PROTOCOL to `muse-url-protocols'. PROTOCOL may be a regexp.
BROWSE-FUNCTION should be a function that visits a URL in the
current buffer.
RESOLVE-FUNCTION should be a function that transforms a URL for
publishing or returns nil if not linked."
(add-to-list 'muse-url-protocols
(list protocol browse-function resolve-function))
(muse-update-url-regexp 'muse-url-protocols
muse-url-protocols))
(defun muse-browse-url-url (url)
"Call `muse-protocol-browse-url' to browse URL.
This is used when we are given something like
\"URL:http://example.org/\".
If you're looking for a good example for how to make a custom URL
handler, look at `muse-browse-url-dict' instead."
(when (string-match "\\`[uU][rR][lL]:\\(.+\\)" url)
(muse-browse-url (match-string 1 url))))
(defun muse-resolve-url-dict (url)
"Return the Wikipedia link corresponding with the given URL."
(when (string-match "\\`dict:\\(.+\\)" url)
(concat "http://" muse-wikipedia-country ".wikipedia.org/"
"wiki/Special:Search?search=" (match-string 1 url))))
(defun muse-browse-url-dict (url)
"If this is a Wikipedia URL, browse it."
(let ((dict-url (muse-resolve-url-dict url)))
(when dict-url
(browse-url dict-url))))
(defun muse-resolve-url-doi (url)
"Return the URL through DOI proxy server."
(when (string-match "\\`doi:\\(.+\\)" url)
(concat "http://dx.doi.org/"
(match-string 1 url))))
(defun muse-browse-url-doi (url)
"If this is a DOI URL, browse it.
DOI's (digitial object identifiers) are a standard identifier
used in the publishing industry."
(let ((doi-url (muse-resolve-url-doi url)))
(when doi-url
(browse-url doi-url))))
(defun muse-resolve-url-google (url)
"Return the correct Google search string."
(when (string-match "\\`google:/?/?\\(.+\\)" url)
(concat "http://www.google.com/search?q="
(match-string 1 url))))
(defun muse-browse-url-google (url)
"If this is a Google URL, jump to it."
(let ((google-url (muse-resolve-url-google url)))
(when google-url
(browse-url google-url))))
(defun muse-browse-url-info (url)
"If this in an Info URL, jump to it."
(require 'info)
(cond
((string-match "\\`info://\\([^#\n]+\\)#\\(.+\\)" url)
(Info-find-node (match-string 1 url)
(match-string 2 url)))
((string-match "\\`info://\\([^#\n]+\\)" url)
(Info-find-node (match-string 1 url)
"Top"))
((string-match "\\`info://(\\([^)\n]+\\))\\(.+\\)" url)
(Info-find-node (match-string 1 url) (match-string 2 url)))
((string-match "\\`info://\\(.+\\)" url)
(Info-find-node (match-string 1 url) "Top"))))
(defun muse-browse-url-man (url)
"If this in a manpage URL, jump to it."
(require 'man)
(when (string-match "\\`man://\\([^(]+\\(([^)]+)\\)?\\)" url)
(man (match-string 1 url))))
(defun muse-browse-url-woman (url)
"If this is a WoMan URL, jump to it."
(require 'woman)
(when (string-match "\\`woman://\\(.+\\)" url)
(woman (match-string 1 url))))
(provide 'muse-protocols)
;;; muse-protocols.el ends here
|
