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;;; riece-eval.el --- evaluate input string as an elisp form
;; Copyright (C) 2005 OHASHI Akira
;; Author: OHASHI Akira <bg66@koka-in.org>
;; Keywords: IRC, riece
;; This file is part of Riece.
;; 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 2, 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 GNU Emacs; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.
;;; Commentary:
;; NOTE: This is an add-on module for Riece.
;;; Code:
(require 'pp)
(require 'riece-message)
(defgroup riece-eval nil
"Evaluate an input string as an elisp form."
:prefix "riece-"
:group 'riece)
(defcustom riece-eval-regexp "^, \\(.+\\)"
"*Pattern of string evaluating."
:type 'string
:group 'riece-eval)
(defcustom riece-eval-ignore-error nil
"*If non-nil, an error is ignored."
:type 'boolean
:group 'riece-eval)
(defconst riece-eval-description
"Evaluate an input string as an elisp form.")
(defun riece-eval-display-message-function (message)
(when (and (get 'riece-eval 'riece-addon-enabled)
(riece-message-own-p message)
(string-match riece-eval-regexp (riece-message-text message)))
(let* ((form (match-string 1 (riece-message-text message)))
(string (riece-eval-form form)))
(unless (equal string "")
(riece-send-string
(format "NOTICE %s :%s\r\n"
(riece-identity-prefix (riece-message-target message))
string))
(riece-display-message
(riece-make-message (riece-current-nickname)
(riece-message-target message)
string 'notice))))))
(defun riece-eval-form (form)
(condition-case err
(let ((object (eval (read form))))
(cond
((stringp object) object)
((and (listp object)
(not (eq object nil)))
(let ((string (pp-to-string object)))
(substring string 0 (1- (length string)))))
((numberp object)
(number-to-string object))
((eq object nil) "")
(t (pp-to-string object))))
(error
(unless riece-eval-ignore-error
(format "Error evaluating %s: %s" form err)))))
(defun riece-eval-insinuate ()
(add-hook 'riece-after-display-message-functions
'riece-eval-display-message-function))
(defun riece-eval-uninstall ()
(remove-hook 'riece-after-display-message-functions
'riece-eval-display-message-function))
(provide 'riece-eval)
;;; riece-eval.el ends here
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