Added Riece pkg subtree

[packages] / xemacs-packages / riece / lisp / riece-eval.el

diff --git a/xemacs-packages/riece/lisp/riece-eval.el b/xemacs-packages/riece/lisp/riece-eval.el
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+++ b/xemacs-packages/riece/lisp/riece-eval.el
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+;;; riece-eval.el --- evaluate input string as an elisp form -*- lexical-binding: t -*-
+;; 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