;;; pure-cs-nemacs.el --- NEmacs specific code for PURE coding-system module

;; Copyright (C) 2000 by Project Pure.

;; Author: SHIMADA Mitsunobu <simm@irc.fan.gr.jp>
;; Keywords: PURE, coding-system, NEmacs

;; $Id: pure-cs-nemacs.el,v 1.4 2001/06/05 16:34:17 simm Exp $

;; This file 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 file 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., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.

;;; Commentary:

;; PURE means "Primitive Universal Relay-chat Environment"
;; CS means coding-system
;; This module is derived from irchat-pj-specific-nemacs.el

;; (Caution) We Project Pure don't support NEmacs environment.

;;; Code:

(defvar pure-cs-enable-mbchars (boundp 'NEMACS)
  "Multibyte characters availability flag.
If non-nil, multibyte characters are available.")

(defvar pure-cs-nemacs-alist
  '((iso-2022-7bit-ss2 . 2)
    (iso-2022-jp       . 2)
    (iso-2022-jproxy   . 2)
    (euc-jp            . 3)
    (euc-japan         . 3)
    (sjis              . 1)
    (shift-jis         . 1)
    (shift_jis         . 1)
    (ctext             . 2)
    (x-ctext           . 2)
    (no-conversion     . 0))
  "Table of coding system.
Each car is Emacs20-expression, cdr is NEmacs-expression.")

(defsubst pure-cs-set-service (service in out)
  (define-service-kanji-code service nil in))
(defsubst pure-cs-set-process (process in out)
  (set-process-kanji-code process in))

(defsubst pure-cs-set-noconv-service (service)
  (pure-cs-set-service service 0 0))
(defsubst pure-cs-set-noconv-process (process)
  (pure-cs-set-process process 0 0))

(defun pure-cs-decode-region (beg end code)
  "Decode the current region by specified coding system.
This function emulates `decode-coding-region' on GNU Emacs 20.*"
  (convert-region-kanji-code beg end (cdr (assq code pure-cs-nemacs-alist)) 3))

(defun pure-cs-encode-region (beg end code)
  "Encode the current region by specified coding system.
This function emulates `encode-coding-region' on GNU Emacs 20.*"
  (convert-region-kanji-code beg end 3 (cdr (assq code pure-cs-nemacs-alist))))

(defun pure-cs-decode-string (str code)
  "Decode the current string by specified coding system.
This function emulates `decode-coding-string' on GNU Emacs 20.*"
  (convert-string-kanji-code str (cdr (assq code pure-cs-nemacs-alist)) 3))

(defun pure-cs-encode-string (str code)
  "Encode the current string by specified coding system.
This function emulates `encode-coding-string' on GNU Emacs 20.*"
  (convert-string-kanji-code str 3 (cdr (assq code pure-cs-nemacs-alist))))

;;; That's all
(provide 'pure-cs-nemacs)

;;; pure-cs-nemacs.el ends here