From a6fd6508c9f853df9f0a61079f2268cd88e3d5f7 Mon Sep 17 00:00:00 2001
From: Case Duckworth
Date: Mon, 16 Aug 2021 22:48:29 -0500
Subject: Break out functionality into other files

---
 lisp/acdw-browse-url.el | 122 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 122 insertions(+)
 create mode 100644 lisp/acdw-browse-url.el

(limited to 'lisp/acdw-browse-url.el')

diff --git a/lisp/acdw-browse-url.el b/lisp/acdw-browse-url.el
new file mode 100644
index 0000000..93f470c
--- /dev/null
+++ b/lisp/acdw-browse-url.el
@@ -0,0 +1,122 @@
+;;; acdw-browse-url.el -*- lexical-binding: t; coding: utf-8-unix -*-
+;;
+;; Add-ons to `browse-url'.
+
+(defvar browse-url-mpv-arguments nil
+  "Arguments to pass to mpv in `browse-url-mpv'.")
+
+(defun browse-url-mpv (url &optional new-window)
+  "Play `URL' in mpv."
+  (interactive (browse-url-interactive-arg "Video URL: "))
+  (ignore new-window) ;; mpv always opens a new window
+  (let* ((url (browse-url-encode-url url))
+         (process-environment (browse-url-process-environment)))
+    (message "Playing %s in mpv..." url)
+    (apply #'start-process
+           (concat "mpv " url) nil
+           "mpv"
+           (append
+            browse-url-mpv-arguments
+            (list url)))))
+
+(defvar browse-url-feh-arguments '("--auto-zoom"
+                                   "--geometry" "800x600")
+  "Arguments to pass to feh in `browse-url-feh'.")
+
+(defun browse-url-feh (url &optional new-window)
+  "Open `URL' in feh."
+  (interactive (browse-url-interactive-arg "Video URL: "))
+  (ignore new-window) ;; mpv always opens a new window
+  (let* ((url (browse-url-encode-url url))
+         (process-environment (browse-url-process-environment)))
+    (message "Opening %s in feh..." url)
+    (apply #'start-process
+           (concat "feh " url) nil
+           "feh"
+           (append
+            browse-url-feh-arguments
+            (list url)))))
+
+(defun acdw/browse-url-set-handlers (handlers)
+  "Set handlers for `browse-url'.
+If Emacs' version is 28 or higher, set `browse-url-handlers'.
+Else, set `browse-url-browser-function'; it's deprecated in 28+."
+  (set-default (if (version< emacs-version "28")
+                   #'browse-url-browser-function
+                 #'browse-url-handlers)
+               handlers))
+
+;;; URL regexp
+;; really, I just want to add gemini:// protocol, but I'm going to do some
+;; reverse-engineering here.
+(defvar acdw/button-protocols '("http"
+                                "https"
+                                "shttp"
+                                "shttps"
+                                "ftp"
+                                "file"
+                                "gopher"
+                                "nntp"
+                                "news"
+                                "telnet"
+                                "wais"
+                                "mailto"
+                                "info")
+  "The list of protocols to splice into `browse-url-button-regexp'.")
+
+(defun acdw/build-button-url-regexp ()
+  "Build `browse-url-button-regexp' from `acdw/button-protocols'.
+I used `xr' (not included in Emacs) to get the RX form of the
+default, so I can easily splice the list into it.  THIS IS
+BRITTLE AF!!!"
+  (rx-to-string                         ; thanks wgreenhouse!
+   `(seq word-boundary
+         (group
+          (group
+           (or "www."
+               (seq
+                (group (or ,@acdw/button-protocols))
+                ":")))
+          (opt
+           (group "//"
+                  (one-or-more
+                   (any "0-9a-z" "._-"))
+                  ":"
+                  (zero-or-more
+                   (any "0-9"))))
+          (or
+           (seq
+            (one-or-more
+             (any "0-9a-z" "!#$%&*+,./:;=?@\\_~-" word))
+            "("
+            (one-or-more
+             (any "0-9a-z" "!#$%&*+,./:;=?@\\_~-" word))
+            (zero-or-more
+             (any "0-9a-z" "#$%&*+/=@\\_~-" word))
+            ")"
+            (opt
+             (one-or-more
+              (any "0-9a-z" "!#$%&*+,./:;=?@\\_~-" word))
+             (any "0-9a-z" "#$%&*+/=@\\_~-" word)))
+           (seq
+            (one-or-more
+             (any "0-9a-z" "!#$%&*+,./:;=?@\\_~-" word))
+            (any "0-9a-z" "#$%&*+/=@\\_~-" word)))))))
+
+(defun acdw/add-button-url-regexp-protocol (proto)
+  "Add PROTO to `browse-url-button-regexp'
+First, add PROTO to `acdw/button-protocols'.
+Then, build `browse-url-button-regexp' with the new protocol."
+  (add-to-list 'acdw/button-protocols proto)
+  (setq-default browse-url-button-regexp (acdw/build-button-url-regexp)))
+
+;;; Browse-URL tweaks
+
+;; convert twitter.com to nitter
+(defun acdw/eww-browse-twitter-url (url &rest args)
+  "Browse a Twitter.com URL using Nitter."
+  (let* ((nitter "nitter.snopyta.org")
+         (url (replace-regexp-in-string "twitter\\.com" nitter url)))
+    (eww-browse-url url args)))
+
+(provide 'acdw-browse-url)
-- 
cgit 1.4.1-21-gabe81