lisp/erc/erc-page.el

   1 ;; erc-page.el - CTCP PAGE support for ERC
   2
   3 ;; Copyright (C) 2002, 2004, 2006-2015 Free Software Foundation, Inc.
   4
   5 ;; Maintainer: emacs-devel@gnu.org
   6
   7 ;; This file is part of GNU Emacs.
   8
   9 ;; GNU Emacs is free software: you can redistribute it and/or modify
  10 ;; it under the terms of the GNU General Public License as published by
  11 ;; the Free Software Foundation, either version 3 of the License, or
  12 ;; (at your option) any later version.
  13
  14 ;; GNU Emacs is distributed in the hope that it will be useful,
  15 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 ;; GNU General Public License for more details.
  18
  19 ;; You should have received a copy of the GNU General Public License
  20 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  21
  22 ;;; Commentary:
  23
  24 ;; Requiring this file will make ERC react to CTCP PAGE messages
  25 ;; received, and it will provide a new /PAGE command to send such
  26 ;; messages yourself.  To enable it, customize the variable
  27 ;; `erc-page-mode'.
  28
  29 ;;; Code:
  30
  31 (require 'erc)
  32
  33 ;;;###autoload (autoload 'erc-page-mode "erc-page")
  34 (define-erc-module page ctcp-page
  35   "Process CTCP PAGE requests from IRC."
  36   nil nil)
  37
  38 (erc-define-catalog-entry 'english 'CTCP-PAGE "Page from %n (%u@%h): %m")
  39
  40 (defgroup erc-page nil
  41   "React to CTCP PAGE messages."
  42   :group 'erc)
  43
  44 (defcustom erc-page-function nil
  45   "A function to process a \"page\" request.
  46 If nil, this prints the page message in the minibuffer and calls
  47 `beep'.  If non-nil, it must be a function that takes two arguments:
  48 SENDER and MSG, both strings.
  49
  50 Example for your init file:
  51
  52 \(setq erc-page-function
  53       (lambda (sender msg)
  54         (play-sound-file \"/home/alex/elisp/erc/sounds/ni.wav\")
  55         (message \"IRC Page from %s: %s\" sender msg)))"
  56   :group 'erc-page
  57   :type '(choice (const nil)
  58                  (function)))
  59
  60 (defcustom erc-ctcp-query-PAGE-hook '(erc-ctcp-query-PAGE)
  61   "List of functions to be called when a CTCP PAGE is received.
  62 This is called from `erc-process-ctcp-query'.  The functions are called
  63 with six arguments: PROC NICK LOGIN HOST TO MSG.  Note that you can
  64 also set `erc-page-function' to a function, which only gets two arguments,
  65 SENDER and MSG, so that might be easier to use."
  66   :group 'erc-page
  67   :type '(repeat function))
  68
  69 (defun erc-ctcp-query-PAGE (proc nick login host to msg)
  70   "Deal with an CTCP PAGE query, if `erc-page-mode' is non-nil.
  71 This will call `erc-page-function', if defined, or it will just print
  72 a message and `beep'.  In addition to that, the page message is also
  73 inserted into the server buffer."
  74   (when (and erc-page-mode
  75              (string-match "PAGE\\(\\s-+.*\\)?$" msg))
  76     (let* ((m (match-string 1 msg))
  77            (page-msg (if m (erc-controls-interpret (substring m 1))
  78                        "[no message]"))
  79            text)
  80       (if m (setq m (substring m 1)))
  81       (setq text (erc-format-message 'CTCP-PAGE
  82                                      ?n nick ?u login
  83                                      ?h host ?m page-msg))
  84       (if erc-page-function
  85           (funcall erc-page-function nick page-msg)
  86         ;; if no function is defined
  87         (message "%s" text)
  88         (beep))
  89       ;; insert text into buffer
  90       (erc-display-message
  91        nil 'notice nil text)))
  92   nil)
  93
  94 (defun erc-cmd-PAGE (line &optional force)
  95   "Send a CTCP page to the user given as the first word in LINE.
  96 The rest of LINE is the message to send.  Note that you will only
  97 receive pages if `erc-page-mode' is on."
  98   (when (string-match "^\\s-*\\(\\S-+\\) ?\\(.*\\)" line)
  99     (let ((nick (match-string 1 line))
 100           (msg (match-string 2 line)))
 101       (erc-cmd-CTCP nick "PAGE" msg))))
 102
 103 (put 'erc-cmd-PAGE 'do-not-parse-args t)
 104
 105 (provide 'erc-page)
 106
 107 ;;; erc-page.el ends here
 108 ;;
 109 ;; Local Variables:
 110 ;; indent-tabs-mode: t
 111 ;; tab-width: 8
 112 ;; End:
 113