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;;; oni-elfeed.el --- Elfeed configuration           -*- lexical-binding: t; -*-

;; Copyright (C) 2019  Tom Willemse

;; Author: Tom Willemse <tom@ryuslash.org>
;; Keywords: local
;; Version: 2024.0205.235009
;; Package-Requires: (elfeed olivetti)

;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.

;; This program 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 this program.  If not, see <https://www.gnu.org/licenses/>.

;;; Commentary:

;; Configuration for the elfeed feed reader. Add the following to your init file
;; in case you want to use this configuration:
;;
;;     (with-eval-after-load 'elfeed (require 'oni-elfeed))

;;; Code:

(require 'elfeed)
(require 'elfeed-search)
(require 'shr)

(defun oni-elfeed-enable-olivetti-mode ()
  "Change ‘olivetti-body-width’ to match the ‘shr-max-width’."
  (setq-local olivetti-body-width (1+ shr-max-width))
  (olivetti-mode))

(setq elfeed-feeds
      '("http://nullprogram.com/feed/"
        ("http://oremacs.com/atom.xml" emacs)
        ("http://emacshorrors.com/feed.atom" emacs)
        ("http://emacsredux.com/atom.xml" emacs)
        ("http://emacsrocks.com/atom.xml" emacs)
        ("http://endlessparentheses.com/atom.xml" emacs)
        ("http://www.masteringemacs.org/feed/" emacs)
        ("http://pragmaticemacs.com/feed/" emacs)
        ("http://sachachua.com/blog/category/emacs/feed/" emacs)
        ("http://planet.lisp.org/rss20.xml" lisp)
        "http://aphyr.com/posts.atom"
        "https://news.ycombinator.com/rss"
        ("https://lwn.net/headlines/newrss" linux)
        ("https://serversforhackers.com/feed.xml" linux)
        ("http://lispblog.xach.com/rss" lisp)
        "http://esr.ibiblio.org/?feed=rss2"
        "http://feeds.feedburner.com/GiantRobotsSmashingIntoOtherGiantRobots"
        "http://grumpygamer.com/rss2.0"
        "http://irreal.org/blog/?feed=rss2"
        "http://devblog.avdi.org/feed/"
        "http://wingolog.org/feed/atom"
        "http://xach.livejournal.com/data/atom"
        "http://allanmcrae.com/feed/"
        "http://beej.us/blog/rss.xml"
        "http://steve-yegge.blogspot.be/atom.xml"
        "https://www.archlinux.org/feeds/news/"
        ("http://blog.quicklisp.org/feeds/posts/default" lisp)
        "http://www.gimp.org/news.rdf"
        "https://nostarch.com/feeds/comingsoon.xml"
        "https://nostarch.com/feeds/newbooks.xml"
        "https://drewdevault.com/blog/index.xml"
        "https://sourcehut.org/blog/index.xml"
        ("https://blog.tecosaur.com/tmio/rss.xml" emacs org-mode)
        "https://www.opensourcestories.org/index.xml"
        "https://neverworkintheory.org/atom.xml"
        "https://ag91.github.io/rss.xml"
        "https://programming-journal.org/feed.xml"
        "https://unzip.dev/rss/"
        ("http://lambda-the-ultimate.org/rss.xml" lisp)
        ("https://planet.emacslife.com/atom.xml" emacs)
        "https://www.reddit.com/r/wallpapers/new.xml"
        "https://picolisp-explored.com/rss.xml"
        "https://onethingwell.org/rss"
        "https://hackaday.com/tag/cyberdeck/feed/"
        "https://bm.babab.nl/feed/atom"
        "https://finalspaceends.com/blogs/news.atom"
        "https://www.geepawhill.org/weekly/rss"
        ("https://blabbermouth.net/feed" music)
        ("https://github.com/roman/golden-ratio.el/commits/master.atom" emacs commits)
        ("https://github.com/bharadswami/syncthing-status.el/commits/main.atom" emacs commits)
        "https://liliputing.com/feed/"))

(add-hook 'elfeed-new-entry-hook
          (elfeed-make-tagger :before "2 weeks ago"
                              :remove 'unread))

;;; Mark any post from LWN as read if it starts with “[$]”.
(add-hook 'elfeed-new-entry-hook
          (elfeed-make-tagger :feed-url (rx "lwn.net")
                              :entry-title (rx bos (or "[$]"
                                                       (seq "Security"
                                                            whitespace
                                                            "updates"
                                                            whitespace
                                                            "for")))
                              :remove 'unread))

;;; Mark any post not containing my resolutions as read.
(add-hook 'elfeed-new-entry-hook
          (elfeed-make-tagger :feed-url (rx "reddit.com/r/wallpapers")
                              :entry-title `(not ,(rx (or (seq "5120" (minimal-match (zero-or-more whitespace)) nonl (minimal-match (zero-or-more whitespace)) "1440")
                                                          (seq "1920" (minimal-match (zero-or-more whitespace)) nonl (minimal-match (zero-or-more whitespace)) "1080"))))
                              :remove 'unread))

;;; Mark any post from Planet Emacslife read if I also follow the originating
;;; blog. This way I won't have so many duplicates.
(defvar oni-elfeed-duplicate-tagger
  (elfeed-make-tagger :feed-url (rx "planet.emacslife.com")
                      :entry-title (rx bos (or "Irreal"
                                               (seq "Sacha" whitespace "Chua")
                                               "Andrea"
                                               (seq "Mickey" whitespace "Petersen"))
                                       ":")
                      :remove 'unread)
  "Tagger for elfeed that marks certain posts as read for Emacslife.")

(defvar oni-elfeed-blabbermouth-review-tagger
  (elfeed-make-tagger :feed-url (rx "blabbermouth.net")
                      :entry-link (rx "/reviews/")
                      :add 'review)
  "Tagger that marks any reviews from Blabbermouth.")

(defvar oni-elfeed-blabbermouth-favourite-tagger
  (elfeed-make-tagger :feed-url (rx "blabbermouth.net")
                      :entry-title (rx (or "SLIPKNOT"
                                           (seq "DREAM" whitespace "THEATER")
                                           (seq "BLIND" whitespace "GUARDIAN")
                                           "MASTODON"))
                      :add 'favourite)
  "Tagger that highlights specific bands from Blabbermouth.")

(add-hook 'elfeed-new-entry-hook oni-elfeed-blabbermouth-favourite-tagger)
(add-hook 'elfeed-new-entry-hook oni-elfeed-blabbermouth-review-tagger)
(add-hook 'elfeed-new-entry-hook oni-elfeed-duplicate-tagger)

(add-to-list 'elfeed-search-face-alist '(review :slant italic) t)
(add-to-list 'elfeed-search-face-alist '(favourite :foreground "#f17272") t)
(add-to-list 'elfeed-search-face-alist '(emacs :foreground "#9b7acd") t)

(add-hook 'elfeed-show-mode-hook #'oni-elfeed-enable-olivetti-mode)

(provide 'oni-elfeed)
;;; oni-elfeed.el ends here