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639 lines
25 KiB
EmacsLisp
639 lines
25 KiB
EmacsLisp
;;; org-protocol.el --- Intercept calls from emacsclient to trigger custom actions.
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;;
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;; Copyright (C) 2008-2014 Free Software Foundation, Inc.
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;;
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;; Authors: Bastien Guerry <bzg@gnu.org>
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;; Daniel M German <dmg AT uvic DOT org>
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;; Sebastian Rose <sebastian_rose AT gmx DOT de>
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;; Ross Patterson <me AT rpatterson DOT net>
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;; Maintainer: Sebastian Rose <sebastian_rose AT gmx DOT de>
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;; Keywords: org, emacsclient, wp
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;; This file is part of GNU Emacs.
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;;
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;; Commentary:
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;;
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;; Intercept calls from emacsclient to trigger custom actions.
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;;
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;; This is done by advising `server-visit-files' to scan the list of filenames
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;; for `org-protocol-the-protocol' and sub-protocols defined in
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;; `org-protocol-protocol-alist' and `org-protocol-protocol-alist-default'.
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;;
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;; Any application that supports calling external programs with an URL
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;; as argument may be used with this functionality.
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;;
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;;
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;; Usage:
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;; ------
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;;
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;; 1.) Add this to your init file (.emacs probably):
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;;
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;; (add-to-list 'load-path "/path/to/org-protocol/")
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;; (require 'org-protocol)
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;;
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;; 3.) Ensure emacs-server is up and running.
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;; 4.) Try this from the command line (adjust the URL as needed):
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;;
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;; $ emacsclient \
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;; org-protocol://store-link://http:%2F%2Flocalhost%2Findex.html/The%20title
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;;
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;; 5.) Optionally add custom sub-protocols and handlers:
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;;
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;; (setq org-protocol-protocol-alist
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;; '(("my-protocol"
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;; :protocol "my-protocol"
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;; :function my-protocol-handler-function)))
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;;
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;; A "sub-protocol" will be found in URLs like this:
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;;
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;; org-protocol://sub-protocol://data
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;;
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;; If it works, you can now setup other applications for using this feature.
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;;
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;;
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;; As of March 2009 Firefox users follow the steps documented on
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;; http://kb.mozillazine.org/Register_protocol, Opera setup is described here:
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;; http://www.opera.com/support/kb/view/535/
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;;
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;;
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;; Documentation
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;; -------------
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;;
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;; org-protocol.el comes with and installs handlers to open sources of published
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;; online content, store and insert the browser's URLs and cite online content
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;; by clicking on a bookmark in Firefox, Opera and probably other browsers and
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;; applications:
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;;
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;; * `org-protocol-open-source' uses the sub-protocol \"open-source\" and maps
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;; URLs to local filenames defined in `org-protocol-project-alist'.
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;;
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;; * `org-protocol-store-link' stores an Org-link (if Org-mode is present) and
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;; pushes the browsers URL to the `kill-ring' for yanking. This handler is
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;; triggered through the sub-protocol \"store-link\".
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;;
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;; * Call `org-protocol-capture' by using the sub-protocol \"capture\". If
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;; Org-mode is loaded, Emacs will pop-up a capture buffer and fill the
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;; template with the data provided. I.e. the browser's URL is inserted as an
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;; Org-link of which the page title will be the description part. If text
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;; was select in the browser, that text will be the body of the entry.
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;;
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;; You may use the same bookmark URL for all those standard handlers and just
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;; adjust the sub-protocol used:
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;;
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;; location.href='org-protocol://sub-protocol://'+
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;; encodeURIComponent(location.href)+'/'+
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;; encodeURIComponent(document.title)+'/'+
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;; encodeURIComponent(window.getSelection())
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;;
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;; The handler for the sub-protocol \"capture\" detects an optional template
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;; char that, if present, triggers the use of a special template.
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;; Example:
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;;
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;; location.href='org-protocol://sub-protocol://x/'+ ...
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;;
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;; use template ?x.
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;;
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;; Note, that using double slashes is optional from org-protocol.el's point of
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;; view because emacsclient squashes the slashes to one.
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;;
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;;
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;; provides: 'org-protocol
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;;
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;;; Code:
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(require 'org)
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(eval-when-compile
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(require 'cl))
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(declare-function org-publish-get-project-from-filename "org-publish"
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(filename &optional up))
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(declare-function server-edit "server" (&optional arg))
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(define-obsolete-function-alias
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'org-protocol-unhex-compound 'org-link-unescape-compound
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"2011-02-17")
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(define-obsolete-function-alias
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'org-protocol-unhex-string 'org-link-unescape
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"2011-02-17")
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(define-obsolete-function-alias
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'org-protocol-unhex-single-byte-sequence
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'org-link-unescape-single-byte-sequence
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"2011-02-17")
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(defgroup org-protocol nil
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"Intercept calls from emacsclient to trigger custom actions.
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This is done by advising `server-visit-files' to scan the list of filenames
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for `org-protocol-the-protocol' and sub-protocols defined in
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`org-protocol-protocol-alist' and `org-protocol-protocol-alist-default'."
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:version "22.1"
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:group 'convenience
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:group 'org)
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;;; Variables:
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(defconst org-protocol-protocol-alist-default
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'(("org-capture" :protocol "capture" :function org-protocol-capture :kill-client t)
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("org-store-link" :protocol "store-link" :function org-protocol-store-link)
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("org-open-source" :protocol "open-source" :function org-protocol-open-source))
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"Default protocols to use.
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See `org-protocol-protocol-alist' for a description of this variable.")
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(defconst org-protocol-the-protocol "org-protocol"
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"This is the protocol to detect if org-protocol.el is loaded.
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`org-protocol-protocol-alist-default' and `org-protocol-protocol-alist' hold
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the sub-protocols that trigger the required action. You will have to define
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just one protocol handler OS-wide (MS-Windows) or per application (Linux).
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That protocol handler should call emacsclient.")
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;;; User variables:
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(defcustom org-protocol-reverse-list-of-files t
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"Non-nil means re-reverse the list of filenames passed on the command line.
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The filenames passed on the command line are passed to the emacs-server in
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reverse order. Set to t (default) to re-reverse the list, i.e. use the
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sequence on the command line. If nil, the sequence of the filenames is
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unchanged."
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:group 'org-protocol
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:type 'boolean)
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(defcustom org-protocol-project-alist nil
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"Map URLs to local filenames for `org-protocol-open-source' (open-source).
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Each element of this list must be of the form:
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(module-name :property value property: value ...)
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where module-name is an arbitrary name. All the values are strings.
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Possible properties are:
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:online-suffix - the suffix to strip from the published URLs
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:working-suffix - the replacement for online-suffix
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:base-url - the base URL, e.g. http://www.example.com/project/
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Last slash required.
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:working-directory - the local working directory. This is, what base-url will
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be replaced with.
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:redirects - A list of cons cells, each of which maps a regular
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expression to match to a path relative to :working-directory.
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Example:
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(setq org-protocol-project-alist
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'((\"http://orgmode.org/worg/\"
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:online-suffix \".php\"
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:working-suffix \".org\"
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:base-url \"http://orgmode.org/worg/\"
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:working-directory \"/home/user/org/Worg/\")
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(\"http://localhost/org-notes/\"
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:online-suffix \".html\"
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:working-suffix \".org\"
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:base-url \"http://localhost/org/\"
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:working-directory \"/home/user/org/\"
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:rewrites ((\"org/?$\" . \"index.php\")))))
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The last line tells `org-protocol-open-source' to open
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/home/user/org/index.php, if the URL cannot be mapped to an existing
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file, and ends with either \"org\" or \"org/\".
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Consider using the interactive functions `org-protocol-create' and
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`org-protocol-create-for-org' to help you filling this variable with valid contents."
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:group 'org-protocol
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:type 'alist)
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(defcustom org-protocol-protocol-alist nil
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"Register custom handlers for org-protocol.
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Each element of this list must be of the form:
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(module-name :protocol protocol :function func :kill-client nil)
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protocol - protocol to detect in a filename without trailing colon and slashes.
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See rfc1738 section 2.1 for more on this.
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If you define a protocol \"my-protocol\", `org-protocol-check-filename-for-protocol'
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will search filenames for \"org-protocol:/my-protocol:/\"
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and trigger your action for every match. `org-protocol' is defined in
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`org-protocol-the-protocol'. Double and triple slashes are compressed
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to one by emacsclient.
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function - function that handles requests with protocol and takes exactly one
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argument: the filename with all protocols stripped. If the function
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returns nil, emacsclient and -server do nothing. Any non-nil return
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value is considered a valid filename and thus passed to the server.
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`org-protocol.el provides some support for handling those filenames,
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if you stay with the conventions used for the standard handlers in
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`org-protocol-protocol-alist-default'. See `org-protocol-split-data'.
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kill-client - If t, kill the client immediately, once the sub-protocol is
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detected. This is necessary for actions that can be interrupted by
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`C-g' to avoid dangling emacsclients. Note, that all other command
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line arguments but the this one will be discarded, greedy handlers
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still receive the whole list of arguments though.
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Here is an example:
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(setq org-protocol-protocol-alist
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'((\"my-protocol\"
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:protocol \"my-protocol\"
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:function my-protocol-handler-function)
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(\"your-protocol\"
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:protocol \"your-protocol\"
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:function your-protocol-handler-function)))"
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:group 'org-protocol
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:type '(alist))
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(defcustom org-protocol-default-template-key nil
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"The default template key to use.
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This is usually a single character string but can also be a
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string with two characters."
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:group 'org-protocol
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:type '(choice (const nil) (string)))
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(defcustom org-protocol-data-separator "/+\\|\\?"
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"The default data separator to use.
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This should be a single regexp string."
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:group 'org-protocol
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:version "24.4"
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:package-version '(Org . "8.0")
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:type 'string)
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;;; Helper functions:
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(defun org-protocol-sanitize-uri (uri)
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"emacsclient compresses double and triple slashes.
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Slashes are sanitized to double slashes here."
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(when (string-match "^\\([a-z]+\\):/" uri)
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(let* ((splitparts (split-string uri "/+")))
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(setq uri (concat (car splitparts) "//" (mapconcat 'identity (cdr splitparts) "/")))))
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uri)
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(defun org-protocol-split-data (data &optional unhexify separator)
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"Split what an org-protocol handler function gets as only argument.
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DATA is that one argument. DATA is split at each occurrence of
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SEPARATOR (regexp). If no SEPARATOR is specified or SEPARATOR is
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nil, assume \"/+\". The results of that splitting are returned
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as a list. If UNHEXIFY is non-nil, hex-decode each split part.
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If UNHEXIFY is a function, use that function to decode each split
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part."
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(let* ((sep (or separator "/+\\|\\?"))
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(split-parts (split-string data sep)))
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(if unhexify
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(if (fboundp unhexify)
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(mapcar unhexify split-parts)
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(mapcar 'org-link-unescape split-parts))
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split-parts)))
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(defun org-protocol-flatten-greedy (param-list &optional strip-path replacement)
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"Greedy handlers might receive a list like this from emacsclient:
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'((\"/dir/org-protocol:/greedy:/~/path1\" (23 . 12)) (\"/dir/param\")
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where \"/dir/\" is the absolute path to emacsclients working directory. This
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function transforms it into a flat list using `org-protocol-flatten' and
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transforms the elements of that list as follows:
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If strip-path is non-nil, remove the \"/dir/\" prefix from all members of
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param-list.
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If replacement is string, replace the \"/dir/\" prefix with it.
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The first parameter, the one that contains the protocols, is always changed.
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Everything up to the end of the protocols is stripped.
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Note, that this function will always behave as if
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`org-protocol-reverse-list-of-files' was set to t and the returned list will
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reflect that. I.e. emacsclients first parameter will be the first one in the
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returned list."
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(let* ((l (org-protocol-flatten (if org-protocol-reverse-list-of-files
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param-list
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(reverse param-list))))
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(trigger (car l))
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(len 0)
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dir
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ret)
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(when (string-match "^\\(.*\\)\\(org-protocol:/+[a-zA-z0-9][-_a-zA-z0-9]*:/+\\)\\(.*\\)" trigger)
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(setq dir (match-string 1 trigger))
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(setq len (length dir))
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(setcar l (concat dir (match-string 3 trigger))))
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(if strip-path
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(progn
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(dolist (e l ret)
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(setq ret
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(append ret
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(list
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(if (stringp e)
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(if (stringp replacement)
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(setq e (concat replacement (substring e len)))
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(setq e (substring e len)))
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e)))))
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ret)
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l)))
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(defun org-protocol-flatten (l)
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"Greedy handlers might receive a list like this from emacsclient:
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'( (\"/dir/org-protocol:/greedy:/~/path1\" (23 . 12)) (\"/dir/param\")
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where \"/dir/\" is the absolute path to emacsclients working directory.
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This function transforms it into a flat list."
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(if (null l) ()
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(if (listp l)
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(append (org-protocol-flatten (car l)) (org-protocol-flatten (cdr l)))
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(list l))))
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;;; Standard protocol handlers:
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(defun org-protocol-store-link (fname)
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"Process an org-protocol://store-link:// style url.
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Additionally store a browser URL as an org link. Also pushes the
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link's URL to the `kill-ring'.
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The location for a browser's bookmark has to look like this:
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javascript:location.href='org-protocol://store-link://'+ \\
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encodeURIComponent(location.href)
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encodeURIComponent(document.title)+'/'+ \\
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Don't use `escape()'! Use `encodeURIComponent()' instead. The title of the page
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could contain slashes and the location definitely will.
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The sub-protocol used to reach this function is set in
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`org-protocol-protocol-alist'."
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(let* ((splitparts (org-protocol-split-data fname t org-protocol-data-separator))
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(uri (org-protocol-sanitize-uri (car splitparts)))
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(title (cadr splitparts))
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orglink)
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(if (boundp 'org-stored-links)
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(setq org-stored-links (cons (list uri title) org-stored-links)))
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(kill-new uri)
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(message "`%s' to insert new org-link, `%s' to insert `%s'"
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(substitute-command-keys"\\[org-insert-link]")
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(substitute-command-keys"\\[yank]")
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uri))
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nil)
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(defun org-protocol-capture (info)
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"Process an org-protocol://capture:// style url.
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The sub-protocol used to reach this function is set in
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`org-protocol-protocol-alist'.
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This function detects an URL, title and optional text, separated
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by '/'. The location for a browser's bookmark looks like this:
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javascript:location.href='org-protocol://capture://'+ \\
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encodeURIComponent(location.href)+'/' \\
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encodeURIComponent(document.title)+'/'+ \\
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encodeURIComponent(window.getSelection())
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By default, it uses the character `org-protocol-default-template-key',
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which should be associated with a template in `org-capture-templates'.
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But you may prepend the encoded URL with a character and a slash like so:
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javascript:location.href='org-protocol://capture://b/'+ ...
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Now template ?b will be used."
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(if (and (boundp 'org-stored-links)
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(org-protocol-do-capture info))
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(message "Item captured."))
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nil)
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(defun org-protocol-convert-query-to-plist (query)
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"Convert query string that is part of url to property list."
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(if query
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(apply 'append (mapcar (lambda (x)
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(let ((c (split-string x "=")))
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(list (intern (concat ":" (car c))) (cadr c))))
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(split-string query "&")))))
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(defun org-protocol-do-capture (info)
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"Support `org-capture'."
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(let* ((parts (org-protocol-split-data info t org-protocol-data-separator))
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(template (or (and (>= 2 (length (car parts))) (pop parts))
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org-protocol-default-template-key))
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(url (org-protocol-sanitize-uri (car parts)))
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(type (if (string-match "^\\([a-z]+\\):" url)
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(match-string 1 url)))
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(title (or (cadr parts) ""))
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(region (or (caddr parts) ""))
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(orglink (org-make-link-string
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url (if (string-match "[^[:space:]]" title) title url)))
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(query (or (org-protocol-convert-query-to-plist (cadddr parts)) ""))
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(org-capture-link-is-already-stored t)) ;; avoid call to org-store-link
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(setq org-stored-links
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(cons (list url title) org-stored-links))
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(kill-new orglink)
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(org-store-link-props :type type
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:link url
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:description title
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:annotation orglink
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:initial region
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:query query)
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(raise-frame)
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(funcall 'org-capture nil template)))
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(defun org-protocol-open-source (fname)
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"Process an org-protocol://open-source:// style url.
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Change a filename by mapping URLs to local filenames as set
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in `org-protocol-project-alist'.
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The location for a browser's bookmark should look like this:
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javascript:location.href='org-protocol://open-source://'+ \\
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encodeURIComponent(location.href)"
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;; As we enter this function for a match on our protocol, the return value
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;; defaults to nil.
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(let ((result nil)
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(f (org-link-unescape fname)))
|
|
(catch 'result
|
|
(dolist (prolist org-protocol-project-alist)
|
|
(let* ((base-url (plist-get (cdr prolist) :base-url))
|
|
(wsearch (regexp-quote base-url)))
|
|
|
|
(when (string-match wsearch f)
|
|
(let* ((wdir (plist-get (cdr prolist) :working-directory))
|
|
(strip-suffix (plist-get (cdr prolist) :online-suffix))
|
|
(add-suffix (plist-get (cdr prolist) :working-suffix))
|
|
;; Strip "[?#].*$" if `f' is a redirect with another
|
|
;; ending than strip-suffix here:
|
|
(f1 (substring f 0 (string-match "\\([\\?#].*\\)?$" f)))
|
|
(start-pos (+ (string-match wsearch f1) (length base-url)))
|
|
(end-pos (string-match
|
|
(regexp-quote strip-suffix) f1))
|
|
;; We have to compare redirects without suffix below:
|
|
(f2 (concat wdir (substring f1 start-pos end-pos)))
|
|
(the-file (concat f2 add-suffix)))
|
|
|
|
;; Note: the-file may still contain `%C3' et al here because browsers
|
|
;; tend to encode `ä' in URLs to `%25C3' - `%25' being `%'.
|
|
;; So the results may vary.
|
|
|
|
;; -- start redirects --
|
|
(unless (file-exists-p the-file)
|
|
(message "File %s does not exist.\nTesting for rewritten URLs." the-file)
|
|
(let ((rewrites (plist-get (cdr prolist) :rewrites)))
|
|
(when rewrites
|
|
(message "Rewrites found: %S" rewrites)
|
|
(mapc
|
|
(lambda (rewrite)
|
|
"Try to match a rewritten URL and map it to a real file."
|
|
;; Compare redirects without suffix:
|
|
(if (string-match (car rewrite) f2)
|
|
(throw 'result (concat wdir (cdr rewrite)))))
|
|
rewrites))))
|
|
;; -- end of redirects --
|
|
|
|
(if (file-readable-p the-file)
|
|
(throw 'result the-file))
|
|
(if (file-exists-p the-file)
|
|
(message "%s: permission denied!" the-file)
|
|
(message "%s: no such file or directory." the-file))))))
|
|
result)))
|
|
|
|
|
|
;;; Core functions:
|
|
|
|
(defun org-protocol-check-filename-for-protocol (fname restoffiles client)
|
|
"Detect if `org-protocol-the-protocol' and a known sub-protocol is used in fname.
|
|
Sub-protocols are registered in `org-protocol-protocol-alist' and
|
|
`org-protocol-protocol-alist-default'.
|
|
This is, how the matching is done:
|
|
|
|
(string-match \"protocol:/+sub-protocol:/+\" ...)
|
|
|
|
protocol and sub-protocol are regexp-quoted.
|
|
|
|
If a matching protocol is found, the protocol is stripped from fname and the
|
|
result is passed to the protocols function as the only parameter. If the
|
|
function returns nil, the filename is removed from the list of filenames
|
|
passed from emacsclient to the server.
|
|
If the function returns a non nil value, that value is passed to the server
|
|
as filename."
|
|
(let ((sub-protocols (append org-protocol-protocol-alist
|
|
org-protocol-protocol-alist-default)))
|
|
(catch 'fname
|
|
(let ((the-protocol (concat (regexp-quote org-protocol-the-protocol) ":/+")))
|
|
(when (string-match the-protocol fname)
|
|
(dolist (prolist sub-protocols)
|
|
(let ((proto (concat the-protocol
|
|
(regexp-quote (plist-get (cdr prolist) :protocol)) ":/+")))
|
|
(when (string-match proto fname)
|
|
(let* ((func (plist-get (cdr prolist) :function))
|
|
(greedy (plist-get (cdr prolist) :greedy))
|
|
(split (split-string fname proto))
|
|
(result (if greedy restoffiles (cadr split))))
|
|
(when (plist-get (cdr prolist) :kill-client)
|
|
(message "Greedy org-protocol handler. Killing client.")
|
|
(server-edit))
|
|
(when (fboundp func)
|
|
(unless greedy
|
|
(throw 'fname (funcall func result)))
|
|
(funcall func result)
|
|
(throw 'fname t))))))))
|
|
;; (message "fname: %s" fname)
|
|
fname)))
|
|
|
|
(defadvice server-visit-files (before org-protocol-detect-protocol-server activate)
|
|
"Advice server-visit-flist to call `org-protocol-modify-filename-for-protocol'."
|
|
(let ((flist (if org-protocol-reverse-list-of-files
|
|
(reverse (ad-get-arg 0))
|
|
(ad-get-arg 0)))
|
|
(client (ad-get-arg 1)))
|
|
(catch 'greedy
|
|
(dolist (var flist)
|
|
;; `\' to `/' on windows. FIXME: could this be done any better?
|
|
(let ((fname (expand-file-name (car var))))
|
|
(setq fname (org-protocol-check-filename-for-protocol
|
|
fname (member var flist) client))
|
|
(if (eq fname t) ;; greedy? We need the `t' return value.
|
|
(progn
|
|
(ad-set-arg 0 nil)
|
|
(throw 'greedy t))
|
|
(if (stringp fname) ;; probably filename
|
|
(setcar var fname)
|
|
(ad-set-arg 0 (delq var (ad-get-arg 0))))))))))
|
|
|
|
;;; Org specific functions:
|
|
|
|
(defun org-protocol-create-for-org ()
|
|
"Create a org-protocol project for the current file's Org-mode project.
|
|
The visited file needs to be part of a publishing project in
|
|
`org-publish-project-alist' for this to work. The function
|
|
delegates most of the work to `org-protocol-create'."
|
|
(interactive)
|
|
(require 'org-publish)
|
|
(let ((all (or (org-publish-get-project-from-filename buffer-file-name))))
|
|
(if all (org-protocol-create (cdr all))
|
|
(message "Not in an org-project. Did mean %s?"
|
|
(substitute-command-keys"\\[org-protocol-create]")))))
|
|
|
|
(defun org-protocol-create (&optional project-plist)
|
|
"Create a new org-protocol project interactively.
|
|
An org-protocol project is an entry in
|
|
`org-protocol-project-alist' which is used by
|
|
`org-protocol-open-source'. Optionally use PROJECT-PLIST to
|
|
initialize the defaults for this project. If PROJECT-PLIST is
|
|
the cdr of an element in `org-publish-project-alist', reuse
|
|
:base-directory, :html-extension and :base-extension."
|
|
(interactive)
|
|
(let ((working-dir (expand-file-name
|
|
(or (plist-get project-plist :base-directory)
|
|
default-directory)))
|
|
(base-url "http://orgmode.org/worg/")
|
|
(strip-suffix (or (plist-get project-plist :html-extension) ".html"))
|
|
(working-suffix (if (plist-get project-plist :base-extension)
|
|
(concat "." (plist-get project-plist :base-extension))
|
|
".org"))
|
|
(worglet-buffer nil)
|
|
(insert-default-directory t)
|
|
(minibuffer-allow-text-properties nil))
|
|
|
|
(setq base-url (read-string "Base URL of published content: " base-url nil base-url t))
|
|
(if (not (string-match "\\/$" base-url))
|
|
(setq base-url (concat base-url "/")))
|
|
|
|
(setq working-dir
|
|
(expand-file-name
|
|
(read-directory-name "Local working directory: " working-dir working-dir t)))
|
|
(if (not (string-match "\\/$" working-dir))
|
|
(setq working-dir (concat working-dir "/")))
|
|
|
|
(setq strip-suffix
|
|
(read-string
|
|
(concat "Extension to strip from published URLs (" strip-suffix "): ")
|
|
strip-suffix nil strip-suffix t))
|
|
|
|
(setq working-suffix
|
|
(read-string
|
|
(concat "Extension of editable files (" working-suffix "): ")
|
|
working-suffix nil working-suffix t))
|
|
|
|
(when (yes-or-no-p "Save the new org-protocol-project to your init file? ")
|
|
(setq org-protocol-project-alist
|
|
(cons `(,base-url . (:base-url ,base-url
|
|
:working-directory ,working-dir
|
|
:online-suffix ,strip-suffix
|
|
:working-suffix ,working-suffix))
|
|
org-protocol-project-alist))
|
|
(customize-save-variable 'org-protocol-project-alist org-protocol-project-alist))))
|
|
|
|
(provide 'org-protocol)
|
|
|
|
;;; org-protocol.el ends here
|