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| | ;;; url-irc.el --- IRC URL interface -*- lexical-binding: t -*-
;; Copyright (C) 1996-1999, 2004-2023 Free Software Foundation, Inc.
;; Keywords: comm, data, processes
;; This file is part of GNU Emacs.
;; GNU Emacs 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.
;; GNU Emacs 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 GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
;;; Commentary:
;; IRC URLs are defined in
;; https://www.w3.org/Addressing/draft-mirashi-url-irc-01.txt
;;; Code:
(require 'url-vars)
(require 'url-parse)
(defconst url-irc-default-port 6667 "Default port for IRC connections.")
(defcustom url-irc-function 'url-irc-rcirc
"Function to actually open an IRC connection.
The function should take the following arguments:
HOST - the hostname of the IRC server to contact
PORT - the port number of the IRC server to contact
CHANNEL - What channel on the server to visit right away (can be nil)
USER - What username to use
PASSWORD - What password to use.
SCHEME - a URI scheme, such as \"irc\" or \"ircs\""
:type '(choice (const :tag "rcirc" :value url-irc-rcirc)
(const :tag "ERC" :value url-irc-erc)
(const :tag "ZEN IRC" :value url-irc-zenirc)
(function :tag "Other"))
:version "29.1" ; Added SCHEME
:group 'url)
;; External.
(declare-function zenirc "ext:zenirc" (&optional prefix))
(declare-function zenirc-send-line "ext:zenirc" ())
(defvar zenirc-server-alist)
(defvar zenirc-buffer-name)
(defun url-irc-zenirc (host port channel user password _)
(let ((zenirc-buffer-name (if (and user host port)
(format "%s@%s:%d" user host port)
(format "%s:%d" host port)))
(zenirc-server-alist
(list
(list host port password nil user))))
(zenirc)
(goto-char (point-max))
(if (not channel)
nil
(insert "/join " channel)
(zenirc-send-line))))
(defun url-irc-rcirc (host port channel user password _)
(let ((chan (when channel (concat "#" channel))))
(rcirc-connect host port user nil nil (when chan (list chan)) password)
(when chan
(switch-to-buffer (concat chan "@" host)))))
(defun url-irc-erc (host port channel user password scheme)
(erc-handle-irc-url host port channel user password scheme))
;;;###autoload
(defun url-irc (url)
(let* ((host (url-host url))
(port (url-port url))
(pass (url-password url))
(user (url-user url))
(chan (url-filename url))
(type (url-type url)))
(if (url-target url)
(setq chan (concat chan "#" (url-target url))))
(if (string-match "^/" chan)
(setq chan (substring chan 1 nil)))
(if (= (length chan) 0)
(setq chan nil))
(condition-case nil
(funcall url-irc-function host port chan user pass type)
(wrong-number-of-arguments
(display-warning 'url
(concat "Incompatible value for `url-irc-function'."
" Likely not expecting a 6th (SCHEME) arg."))
(funcall url-irc-function host port chan user pass)))
nil))
;;;; ircs://
;; The function `url-scheme-get-property' tries and fails to load the
;; nonexistent url-ircs.el but falls back to using the following:
;;;###autoload
(defconst url-ircs-default-port 6697 "Default port for IRCS connections.")
;;;###autoload
(defalias 'url-ircs 'url-irc)
(provide 'url-irc)
;;; url-irc.el ends here
|