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720 lines
26 KiB
EmacsLisp
720 lines
26 KiB
EmacsLisp
;;; org-feed.el --- Add RSS feed items to Org files -*- lexical-binding: t; -*-
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;;
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;; Copyright (C) 2009-2021 Free Software Foundation, Inc.
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;;
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;; Author: Carsten Dominik <carsten.dominik@gmail.com>
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;; Keywords: outlines, hypermedia, calendar, wp
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;; Homepage: https://orgmode.org
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;;
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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 <https://www.gnu.org/licenses/>.
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;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
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;;
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;;; Commentary:
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;;
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;; This module allows entries to be created and changed in an Org mode
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;; file triggered by items in an RSS feed. The basic functionality
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;; is geared toward simply adding new items found in a feed as
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;; outline nodes to an Org file. Using hooks, arbitrary actions can
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;; be triggered for new or changed items.
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;;
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;; Selecting feeds and target locations
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;; ------------------------------------
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;;
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;; This module is configured through a single variable, `org-feed-alist'.
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;; Here is an example, using a notes/tasks feed from reQall.com.
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;;
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;; (setq org-feed-alist
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;; '(("ReQall"
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;; "http://www.reqall.com/user/feeds/rss/a1b2c3....."
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;; "~/org/feeds.org" "ReQall Entries")
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;;
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;; With this setup, the command `M-x org-feed-update-all' will
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;; collect new entries in the feed at the given URL and create
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;; entries as subheadings under the "ReQall Entries" heading in the
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;; file "~/org/feeds.org". Each feed should normally have its own
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;; heading - however see the `:drawer' parameter.
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;;
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;; Besides these standard elements that need to be specified for each
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;; feed, keyword-value pairs can set additional options. For example,
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;; to de-select transitional entries with a title containing
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;;
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;; "reQall is typing what you said",
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;;
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;; you could use the `:filter' argument:
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;;
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;; (setq org-feed-alist
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;; '(("ReQall"
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;; "http://www.reqall.com/user/feeds/rss/a1b2c3....."
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;; "~/org/feeds.org" "ReQall Entries"
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;; :filter my-reqall-filter)))
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;;
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;; (defun my-reqall-filter (e)
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;; (if (string-match "reQall is typing what you said"
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;; (plist-get e :title))
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;; nil
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;; e))
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;;
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;; See the docstring for `org-feed-alist' for more details.
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;;
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;;
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;; Keeping track of previously added entries
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;; -----------------------------------------
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;;
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;; Since Org allows you to delete, archive, or move outline nodes,
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;; org-feed.el needs to keep track of which feed items have been handled
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;; before, so that they will not be handled again. For this, org-feed.el
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;; stores information in a special drawer, FEEDSTATUS, under the heading
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;; that received the input of the feed.
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;;
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;;
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;; Acknowledgments
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;; ---------------
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;;
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;; org-feed.el is based on ideas by Brad Bozarth who implemented a
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;; similar mechanism using shell and awk scripts.
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;;; Code:
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(require 'org)
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(require 'sha1)
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(declare-function url-retrieve-synchronously "url"
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(url &optional silent inhibit-cookies timeout))
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(declare-function xml-node-children "xml" (node))
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(declare-function xml-get-children "xml" (node child-name))
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(declare-function xml-get-attribute "xml" (node attribute))
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(declare-function xml-get-attribute-or-nil "xml" (node attribute))
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(declare-function xml-substitute-special "xml" (string))
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(declare-function org-capture-escaped-% "org-capture" ())
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(declare-function org-capture-expand-embedded-elisp "org-capture" (&optional mark))
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(declare-function org-capture-inside-embedded-elisp-p "org-capture" ())
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(defgroup org-feed nil
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"Options concerning RSS feeds as inputs for Org files."
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:tag "Org Feed"
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:group 'org)
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(defcustom org-feed-alist nil
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"Alist specifying RSS feeds that should create inputs for Org.
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Each entry in this list specified an RSS feed tat should be queried
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to create inbox items in Org. Each entry is a list with the following items:
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name a custom name for this feed
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URL the Feed URL
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file the target Org file where entries should be listed, when
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nil the target becomes the current buffer (may be an
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indirect buffer) each time the feed update is invoked
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headline the headline under which entries should be listed
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Additional arguments can be given using keyword-value pairs. Many of these
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specify functions that receive one or a list of \"entries\" as their single
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argument. An entry is a property list that describes a feed item. The
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property list has properties for each field in the item, for example `:title'
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for the `<title>' field and `:pubDate' for the publication date. In addition,
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it contains the following properties:
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`:item-full-text' the full text in the <item> tag
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`:guid-permalink' t when the guid property is a permalink
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Here are the keyword-value pair allows in `org-feed-alist'.
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:drawer drawer-name
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The name of the drawer for storing feed information. The default is
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\"FEEDSTATUS\". Using different drawers for different feeds allows
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several feeds to target the same inbox heading.
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:filter filter-function
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A function to select interesting entries in the feed. It gets a single
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entry as parameter. It should return the entry if it is relevant, or
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nil if it is not.
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:template template-string
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The default action on new items in the feed is to add them as children
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under the headline for the feed. The template describes how the entry
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should be formatted. If not given, it defaults to
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`org-feed-default-template'.
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:formatter formatter-function
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Instead of relying on a template, you may specify a function to format
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the outline node to be inserted as a child. This function gets passed
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a property list describing a single feed item, and it should return a
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string that is a properly formatted Org outline node of level 1.
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:new-handler function
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If adding new items as children to the outline is not what you want
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to do with new items, define a handler function that is called with
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a list of all new items in the feed, each one represented as a property
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list. The handler should do what needs to be done, and org-feed will
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mark all items given to this handler as \"handled\", i.e. they will not
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be passed to this handler again in future readings of the feed.
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When the handler is called, point will be at the feed headline.
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:changed-handler function
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This function gets passed a list of all entries that have been
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handled before, but are now still in the feed and have *changed*
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since last handled (as evidenced by a different sha1 hash).
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When the handler is called, point will be at the feed headline.
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:parse-feed function
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This function gets passed a buffer, and should return a list
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of entries, each being a property list containing the
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`:guid' and `:item-full-text' keys. The default is
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`org-feed-parse-rss-feed'; `org-feed-parse-atom-feed' is an
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alternative.
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:parse-entry function
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This function gets passed an entry as returned by the parse-feed
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function, and should return the entry with interesting properties added.
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The default is `org-feed-parse-rss-entry'; `org-feed-parse-atom-entry'
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is an alternative."
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:group 'org-feed
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:type '(repeat
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(list :value ("" "http://" "" "")
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(string :tag "Name")
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(string :tag "Feed URL")
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(file :tag "File for inbox")
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(string :tag "Headline for inbox")
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(repeat :inline t
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(choice
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(list :inline t :tag "Filter"
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(const :filter)
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(symbol :tag "Filter Function"))
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(list :inline t :tag "Template"
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(const :template)
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(string :tag "Template"))
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(list :inline t :tag "Formatter"
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(const :formatter)
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(symbol :tag "Formatter Function"))
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(list :inline t :tag "New items handler"
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(const :new-handler)
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(symbol :tag "Handler Function"))
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(list :inline t :tag "Changed items"
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(const :changed-handler)
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(symbol :tag "Handler Function"))
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(list :inline t :tag "Parse Feed"
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(const :parse-feed)
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(symbol :tag "Parse Feed Function"))
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(list :inline t :tag "Parse Entry"
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(const :parse-entry)
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(symbol :tag "Parse Entry Function"))
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)))))
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(defcustom org-feed-drawer "FEEDSTATUS"
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"The name of the drawer for feed status information.
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Each feed may also specify its own drawer name using the `:drawer'
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parameter in `org-feed-alist'."
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:group 'org-feed
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:type '(string :tag "Drawer Name"))
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(defcustom org-feed-default-template "\n* %h\n %U\n %description\n %a\n"
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"Template for the Org node created from RSS feed items.
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This is just the default, each feed can specify its own.
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Any fields from the feed item can be interpolated into the template with
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%name, for example %title, %description, %pubDate etc. In addition, the
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following special escapes are valid as well:
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%h The title, or the first line of the description
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%t The date as a stamp, either from <pubDate> (if present), or
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the current date
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%T Date and time
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%u,%U Like %t,%T, but inactive time stamps
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%a A link, from <guid> if that is a permalink, else from <link>
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%(sexp) Evaluate elisp `(sexp)' and replace with the result, the simple
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%-escapes above can be used as arguments, e.g. %(capitalize \\\"%h\\\")"
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:group 'org-feed
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:type '(string :tag "Template"))
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(defcustom org-feed-save-after-adding t
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"Non-nil means save buffer after adding new feed items."
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:group 'org-feed
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:type 'boolean)
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(defcustom org-feed-retrieve-method 'url-retrieve-synchronously
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"The method to be used to retrieve a feed URL.
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This can be `curl' or `wget' to call these external programs, or it can be
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an Emacs Lisp function that will return a buffer containing the content
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of the file pointed to by the URL."
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:group 'org-feed
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:type '(choice
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(const :tag "Internally with url.el" url-retrieve-synchronously)
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(const :tag "Externally with curl" curl)
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(const :tag "Externally with wget" wget)
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(function :tag "Function")))
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(defcustom org-feed-before-adding-hook nil
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"Hook that is run before adding new feed items to a file.
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You might want to commit the file in its current state to version control,
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for example."
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:group 'org-feed
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:type 'hook)
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(defcustom org-feed-after-adding-hook nil
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"Hook that is run after new items have been added to a file.
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Depending on `org-feed-save-after-adding', the buffer will already
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have been saved."
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:group 'org-feed
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:type 'hook)
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(defvar org-feed-buffer "*Org feed*"
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"The buffer used to retrieve a feed.")
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;;;###autoload
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(defun org-feed-update-all ()
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"Get inbox items from all feeds in `org-feed-alist'."
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(interactive)
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(let ((entries 0)
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(errors 0)
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(total-feeds (length org-feed-alist)))
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(dolist (feed org-feed-alist)
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(let ((items (ignore-errors (org-feed-update feed))))
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(if items (cl-incf entries items)
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(cl-incf errors))))
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(message "%s from %d %s%s"
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(pcase entries
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(0 "No new entries")
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(1 "1 new entry")
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(_ (format "%d new entries" entries)))
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total-feeds
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(if (= total-feeds 1) "feed" "feeds")
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(if (= 0 errors) "" (format " (unavailable feeds: %d)" errors)))))
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;;;###autoload
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(defun org-feed-update (feed &optional retrieve-only)
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"Get inbox items from FEED.
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FEED can be a string with an association in `org-feed-alist', or
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it can be a list structured like an entry in `org-feed-alist'."
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(interactive (list (org-completing-read "Feed name: " org-feed-alist)))
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(if (stringp feed) (setq feed (assoc feed org-feed-alist)))
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(unless feed
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(error "No such feed in `org-feed-alist"))
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(catch 'exit
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(let ((name (car feed))
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(url (nth 1 feed))
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(file (or (nth 2 feed) (buffer-file-name (or (buffer-base-buffer)
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(current-buffer)))))
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(headline (nth 3 feed))
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(filter (nth 1 (memq :filter feed)))
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(formatter (nth 1 (memq :formatter feed)))
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(new-handler (nth 1 (memq :new-handler feed)))
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(changed-handler (nth 1 (memq :changed-handler feed)))
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(template (or (nth 1 (memq :template feed))
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org-feed-default-template))
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(drawer (or (nth 1 (memq :drawer feed))
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org-feed-drawer))
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(parse-feed (or (nth 1 (memq :parse-feed feed))
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'org-feed-parse-rss-feed))
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(parse-entry (or (nth 1 (memq :parse-entry feed))
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'org-feed-parse-rss-entry))
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feed-buffer inbox-pos new-formatted
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entries old-status status new changed guid-alist guid olds)
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(setq feed-buffer (org-feed-get-feed url))
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(unless (and feed-buffer (bufferp (get-buffer feed-buffer)))
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(error "Cannot get feed %s" name))
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(when retrieve-only
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(throw 'exit feed-buffer))
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(setq entries (funcall parse-feed feed-buffer))
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(ignore-errors (kill-buffer feed-buffer))
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(save-excursion
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(save-window-excursion
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(setq inbox-pos (org-feed-goto-inbox-internal file headline))
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(setq old-status (org-feed-read-previous-status inbox-pos drawer))
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;; Add the "handled" status to the appropriate entries
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(setq entries (mapcar (lambda (e)
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(setq e
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(plist-put e :handled
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(nth 1 (assoc
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(plist-get e :guid)
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old-status)))))
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entries))
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;; Find out which entries are new and which are changed
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(dolist (e entries)
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(if (not (plist-get e :handled))
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(push e new)
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(setq olds (nth 2 (assoc (plist-get e :guid) old-status)))
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(if (and olds
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(not (string= (sha1
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(plist-get e :item-full-text))
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olds)))
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(push e changed))))
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;; Parse the relevant entries fully
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(setq new (mapcar parse-entry new)
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changed (mapcar parse-entry changed))
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;; Run the filter
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(when filter
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(setq new (delq nil (mapcar filter new))
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changed (delq nil (mapcar filter new))))
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(when (not (or new changed))
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(message "No new items in feed %s" name)
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(throw 'exit 0))
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;; Get alist based on guid, to look up entries
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(setq guid-alist
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(append
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(mapcar (lambda (e) (list (plist-get e :guid) e)) new)
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(mapcar (lambda (e) (list (plist-get e :guid) e)) changed)))
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;; Construct the new status
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(setq status
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(mapcar
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(lambda (e)
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(setq guid (plist-get e :guid))
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(list guid
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;; things count as handled if we handle them now,
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;; or if they were handled previously
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(if (assoc guid guid-alist) t (plist-get e :handled))
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;; A hash, to detect changes
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(sha1 (plist-get e :item-full-text))))
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entries))
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;; Handle new items in the feed
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(when new
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(if new-handler
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(progn
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(goto-char inbox-pos)
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(funcall new-handler new))
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;; No custom handler, do the default adding
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;; Format the new entries into an alist with GUIDs in the car
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(setq new-formatted
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(mapcar
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(lambda (e) (org-feed-format-entry e template formatter))
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new)))
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;; Insert the new items
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(org-feed-add-items inbox-pos new-formatted))
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;; Handle changed items in the feed
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(when (and changed-handler changed)
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(goto-char inbox-pos)
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(funcall changed-handler changed))
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;; Write the new status
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;; We do this only now, in case something goes wrong above, so
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;; that would would end up with a status that does not reflect
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;; which items truly have been handled
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(org-feed-write-status inbox-pos drawer status)
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;; Normalize the visibility of the inbox tree
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(goto-char inbox-pos)
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(org-flag-subtree t)
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(org-show-children)
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;; Hooks and messages
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(when org-feed-save-after-adding (save-buffer))
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(message "Added %d new item%s from feed %s to file %s, heading %s"
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(length new) (if (> (length new) 1) "s" "")
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name
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(file-name-nondirectory file) headline)
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(run-hooks 'org-feed-after-adding-hook)
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(length new))))))
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;;;###autoload
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(defun org-feed-goto-inbox (feed)
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"Go to the inbox that captures the feed named FEED."
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(interactive
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(list (if (= (length org-feed-alist) 1)
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(car org-feed-alist)
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(org-completing-read "Feed name: " org-feed-alist))))
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(if (stringp feed) (setq feed (assoc feed org-feed-alist)))
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(unless feed
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(error "No such feed in `org-feed-alist"))
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(org-feed-goto-inbox-internal (nth 2 feed) (nth 3 feed)))
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;;;###autoload
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(defun org-feed-show-raw-feed (feed)
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"Show the raw feed buffer of a feed."
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(interactive
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(list (if (= (length org-feed-alist) 1)
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(car org-feed-alist)
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(org-completing-read "Feed name: " org-feed-alist))))
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(if (stringp feed) (setq feed (assoc feed org-feed-alist)))
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(unless feed
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(error "No such feed in `org-feed-alist"))
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(pop-to-buffer-same-window
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(org-feed-update feed 'retrieve-only))
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(goto-char (point-min)))
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(defun org-feed-goto-inbox-internal (file heading)
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"Find or create HEADING in FILE.
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Switch to that buffer, and return the position of that headline."
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(find-file file)
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(widen)
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(goto-char (point-min))
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(if (re-search-forward
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(concat "^\\*+[ \t]+" heading "[ \t]*\\(:.*?:[ \t]*\\)?$")
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nil t)
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(goto-char (match-beginning 0))
|
|
(goto-char (point-max))
|
|
(insert "\n\n* " heading "\n\n")
|
|
(org-back-to-heading t))
|
|
(point))
|
|
|
|
(defun org-feed-read-previous-status (pos drawer)
|
|
"Get the alist of old GUIDs from the entry at POS.
|
|
This will find DRAWER and extract the alist."
|
|
(save-excursion
|
|
(goto-char pos)
|
|
(let ((end (save-excursion (org-end-of-subtree t t))))
|
|
(if (re-search-forward
|
|
(concat "^[ \t]*:" drawer ":[ \t]*\n\\([^\000]*?\\)\n[ \t]*:END:")
|
|
end t)
|
|
(read (match-string 1))
|
|
nil))))
|
|
|
|
(defun org-feed-write-status (pos drawer status)
|
|
"Write the feed STATUS to DRAWER in entry at POS."
|
|
(save-excursion
|
|
(goto-char pos)
|
|
(let ((end (save-excursion (org-end-of-subtree t t))))
|
|
(if (re-search-forward (concat "^[ \t]*:" drawer ":[ \t]*\n")
|
|
end t)
|
|
(progn
|
|
(goto-char (match-end 0))
|
|
(delete-region (point)
|
|
(save-excursion
|
|
(and (re-search-forward "^[ \t]*:END:" nil t)
|
|
(match-beginning 0)))))
|
|
(outline-next-heading)
|
|
(insert " :" drawer ":\n :END:\n")
|
|
(beginning-of-line 0))
|
|
(insert (pp-to-string status)))))
|
|
|
|
(defun org-feed-add-items (pos entries)
|
|
"Add the formatted items to the headline as POS."
|
|
(let (entry level)
|
|
(save-excursion
|
|
(goto-char pos)
|
|
(unless (looking-at org-complex-heading-regexp)
|
|
(error "Wrong position"))
|
|
(setq level (org-get-valid-level (length (match-string 1)) 1))
|
|
(org-end-of-subtree t t)
|
|
(skip-chars-backward " \t\n")
|
|
(beginning-of-line 2)
|
|
(setq pos (point))
|
|
(while (setq entry (pop entries))
|
|
(org-paste-subtree level entry 'yank))
|
|
(org-mark-ring-push pos))))
|
|
|
|
(defun org-feed-format-entry (entry template formatter)
|
|
"Format ENTRY so that it can be inserted into an Org file.
|
|
ENTRY is a property list. This function adds a `:formatted-for-org' property
|
|
and returns the full property list.
|
|
If that property is already present, nothing changes."
|
|
(require 'org-capture)
|
|
(if formatter (funcall formatter entry)
|
|
(let* ((dlines
|
|
(org-split-string (or (plist-get entry :description) "???")
|
|
"\n"))
|
|
(time (or (if (plist-get entry :pubDate)
|
|
(org-read-date t t (plist-get entry :pubDate)))
|
|
(current-time)))
|
|
(v-h (or (plist-get entry :title) (car dlines) "???"))
|
|
(v-t (format-time-string (org-time-stamp-format nil nil) time))
|
|
(v-T (format-time-string (org-time-stamp-format t nil) time))
|
|
(v-u (format-time-string (org-time-stamp-format nil t) time))
|
|
(v-U (format-time-string (org-time-stamp-format t t) time))
|
|
(v-a (let ((tmp (or (and (plist-get entry :guid-permalink)
|
|
(plist-get entry :guid))
|
|
(plist-get entry :link))))
|
|
(if tmp (format "[[%s]]\n" tmp ) ""))))
|
|
(with-temp-buffer
|
|
(insert template)
|
|
(goto-char (point-min))
|
|
|
|
;; Mark %() embedded elisp for later evaluation.
|
|
(org-capture-expand-embedded-elisp 'mark)
|
|
|
|
;; Simple %-escapes. `org-capture-escaped-%' may modify
|
|
;; buffer and cripple match-data. Use markers instead.
|
|
(while (re-search-forward "%\\([a-zA-Z]+\\)" nil t)
|
|
(let ((key (match-string 1))
|
|
(beg (copy-marker (match-beginning 0)))
|
|
(end (copy-marker (match-end 0))))
|
|
(unless (org-capture-escaped-%)
|
|
(delete-region beg end)
|
|
(set-marker beg nil)
|
|
(set-marker end nil)
|
|
(let ((replacement
|
|
(pcase key
|
|
("h" v-h)
|
|
("t" v-t)
|
|
("T" v-T)
|
|
("u" v-u)
|
|
("U" v-U)
|
|
("a" v-a)
|
|
(name
|
|
(let ((v (plist-get entry (intern (concat ":" name)))))
|
|
(save-excursion
|
|
(save-match-data
|
|
(beginning-of-line)
|
|
(if (looking-at
|
|
(concat "^\\([ \t]*\\)%" name "[ \t]*$"))
|
|
(org-feed-make-indented-block
|
|
v (current-indentation))
|
|
v))))))))
|
|
(when replacement
|
|
(insert
|
|
;; Escape string delimiters within embedded lisp.
|
|
(if (org-capture-inside-embedded-elisp-p)
|
|
(replace-regexp-in-string "\"" "\\\\\"" replacement)
|
|
replacement)))))))
|
|
|
|
;; %() embedded elisp
|
|
(org-capture-expand-embedded-elisp)
|
|
|
|
(decode-coding-string
|
|
(buffer-string) (detect-coding-region (point-min) (point-max) t))))))
|
|
|
|
(defun org-feed-make-indented-block (s n)
|
|
"Add indentation of N spaces to a multiline string S."
|
|
(if (not (string-match "\n" s))
|
|
s
|
|
(mapconcat 'identity
|
|
(org-split-string s "\n")
|
|
(concat "\n" (make-string n ?\ )))))
|
|
|
|
(defun org-feed-skip-http-headers (buffer)
|
|
"Remove HTTP headers from BUFFER, and return it.
|
|
Assumes headers are indeed present!"
|
|
(with-current-buffer buffer
|
|
(widen)
|
|
(goto-char (point-min))
|
|
(search-forward "\n\n")
|
|
(delete-region (point-min) (point))
|
|
buffer))
|
|
|
|
(defun org-feed-get-feed (url)
|
|
"Get the RSS feed file at URL and return the buffer."
|
|
(cond
|
|
((eq org-feed-retrieve-method 'url-retrieve-synchronously)
|
|
(org-feed-skip-http-headers (url-retrieve-synchronously url)))
|
|
((eq org-feed-retrieve-method 'curl)
|
|
(ignore-errors (kill-buffer org-feed-buffer))
|
|
(call-process "curl" nil org-feed-buffer nil "--silent" url)
|
|
org-feed-buffer)
|
|
((eq org-feed-retrieve-method 'wget)
|
|
(ignore-errors (kill-buffer org-feed-buffer))
|
|
(call-process "wget" nil org-feed-buffer nil "-q" "-O" "-" url)
|
|
org-feed-buffer)
|
|
((functionp org-feed-retrieve-method)
|
|
(funcall org-feed-retrieve-method url))))
|
|
|
|
(defun org-feed-parse-rss-feed (buffer)
|
|
"Parse BUFFER for RSS feed entries.
|
|
Returns a list of entries, with each entry a property list,
|
|
containing the properties `:guid' and `:item-full-text'."
|
|
(require 'xml)
|
|
(let ((case-fold-search t)
|
|
entries beg end item guid entry)
|
|
(with-current-buffer buffer
|
|
(widen)
|
|
(goto-char (point-min))
|
|
(while (re-search-forward "<item\\>.*?>" nil t)
|
|
(setq beg (point)
|
|
end (and (re-search-forward "</item>" nil t)
|
|
(match-beginning 0)))
|
|
(setq item (buffer-substring beg end)
|
|
guid (if (string-match "<guid\\>.*?>\\([^\000]*?\\)</guid>" item)
|
|
(xml-substitute-special (match-string-no-properties 1 item))))
|
|
(setq entry (list :guid guid :item-full-text item))
|
|
(push entry entries)
|
|
(widen)
|
|
(goto-char end))
|
|
(nreverse entries))))
|
|
|
|
(defun org-feed-parse-rss-entry (entry)
|
|
"Parse the `:item-full-text' field for xml tags and create new properties."
|
|
(require 'xml)
|
|
(with-temp-buffer
|
|
(insert (plist-get entry :item-full-text))
|
|
(goto-char (point-min))
|
|
(while (re-search-forward "<\\([a-zA-Z]+\\>\\).*?>\\([^\000]*?\\)</\\1>"
|
|
nil t)
|
|
(setq entry (plist-put entry
|
|
(intern (concat ":" (match-string 1)))
|
|
(xml-substitute-special (match-string 2)))))
|
|
(goto-char (point-min))
|
|
(unless (re-search-forward "isPermaLink[ \t]*=[ \t]*\"false\"" nil t)
|
|
(setq entry (plist-put entry :guid-permalink t))))
|
|
entry)
|
|
|
|
(defun org-feed-parse-atom-feed (buffer)
|
|
"Parse BUFFER for Atom feed entries.
|
|
Returns a list of entries, with each entry a property list,
|
|
containing the properties `:guid' and `:item-full-text'.
|
|
|
|
The `:item-full-text' property actually contains the sexp
|
|
formatted as a string, not the original XML data."
|
|
(require 'xml)
|
|
(with-current-buffer buffer
|
|
(widen)
|
|
(let ((feed (car (xml-parse-region (point-min) (point-max)))))
|
|
(mapcar
|
|
(lambda (entry)
|
|
(list
|
|
:guid (car (xml-node-children (car (xml-get-children entry 'id))))
|
|
:item-full-text (prin1-to-string entry)))
|
|
(xml-get-children feed 'entry)))))
|
|
|
|
(defun org-feed-parse-atom-entry (entry)
|
|
"Parse the `:item-full-text' as a sexp and create new properties."
|
|
(let ((xml (car (read-from-string (plist-get entry :item-full-text)))))
|
|
;; Get first <link href='foo'/>.
|
|
(setq entry (plist-put entry :link
|
|
(xml-get-attribute
|
|
(car (xml-get-children xml 'link))
|
|
'href)))
|
|
;; Add <title/> as :title.
|
|
(setq entry (plist-put entry :title
|
|
(xml-substitute-special
|
|
(car (xml-node-children
|
|
(car (xml-get-children xml 'title)))))))
|
|
(let* ((content (car (xml-get-children xml 'content)))
|
|
(type (xml-get-attribute-or-nil content 'type)))
|
|
(when content
|
|
(cond
|
|
((string= type "text")
|
|
;; We like plain text.
|
|
(setq entry (plist-put entry :description
|
|
(xml-substitute-special
|
|
(car (xml-node-children content))))))
|
|
((string= type "html")
|
|
;; TODO: convert HTML to Org markup.
|
|
(setq entry (plist-put entry :description
|
|
(xml-substitute-special
|
|
(car (xml-node-children content))))))
|
|
((string= type "xhtml")
|
|
;; TODO: convert XHTML to Org markup.
|
|
(setq entry (plist-put entry :description
|
|
(prin1-to-string
|
|
(xml-node-children content)))))
|
|
(t
|
|
(setq entry (plist-put entry :description
|
|
(format-message
|
|
"Unknown `%s' content." type)))))))
|
|
entry))
|
|
|
|
(provide 'org-feed)
|
|
|
|
;; Local variables:
|
|
;; generated-autoload-file: "org-loaddefs.el"
|
|
;; End:
|
|
|
|
;;; org-feed.el ends here
|