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[elisp/tamago.git] / egg-x0213.el

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+;;; jisx0213.el --- Charset Definition for JIS X 0213
+
+;; Copyright (C) 1999,2000 PFU LIMITED
+
+;; Author: KATAYAMA Yoshio <kate@pfu.co.jp>
+
+;; Maintainer: TOMURA Satoru <tomura@etl.go.jp>
+
+;; Keywords: mule, multilingual, input method
+
+;; This file is part of EGG.
+
+;; EGG 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.
+
+;; EGG 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:
+
+;; This module defines JIS X 0213 character sets if these character
+;; sets are not defined.  This module also defines fixed-euc-jisx0213
+;; coding systems if these coding systems are not defined and can be
+;; defined.
+
+;;; Code:
+
+(if (not (charsetp 'japanese-jisx0213-1))
+    (define-charset 151 'japanese-jisx0213-1
+      [2 94 2 0 ?O 0 "JISX0213-1" "JISX0213-1" "JISX0213-1 (Japanese)"]))
+
+(if (not (charsetp 'japanese-jisx0213-2))
+    (define-charset 254 'japanese-jisx0213-2
+      [2 94 2 0 ?P 0 "JISX0213-2" "JISX0213-2" "JISX0213-2 (Japanese)"]))
+
+;; Mule-UCS is required to adopt fixed-euc-jisx0213.
+(or 
+ noninteractive ;; unnecessary in non-interactive mode.
+ (unless (or (require 'jisx0213)
+             (get 'jisx0213-to-jisx0208/0212 'translation-table))
+   (message "Mule-UCS not installed."))
+ (coding-system-p 'fixed-euc-jisx0213)
+ (progn
+
+   (define-ccl-program ccl-decode-fixed-euc-jisx0213
+     `(2
+       ((r3 = ,(charset-id 'katakana-jisx0201))
+        (loop ;;      ascii kana 212 208
+         (read r0) ;; r0 -   0    0    h   h
+         (read r1) ;; r1 -   l    h    l   h
+         (if (r0 < ?\x80)
+             ((if (r1 < ?\x80)
+                  (write-repeat r1))
+              (write r3)
+              (write-repeat r1))
+           ((r0 &= 127)
+            (r0 <<= 7)
+            (if (r1 > ?\x80)
+                ((r1 &= 127)
+                 (r2 = ,(charset-id 'japanese-jisx0213-1)))
+              (r2 = ,(charset-id 'japanese-jisx0213-2)))
+            (r0 += r1)
+            (translate-character jisx0213-to-jisx0208/0212 r2 r0)
+            (write-multibyte-character r2 r0)
+            (repeat)
+            ))))))
+
+   (define-ccl-program ccl-encode-fixed-euc-jisx0213
+     `(2
+       ((loop
+         (read-multibyte-character r0 r1)
+         (r6 = (r0 == ,(charset-id 'ascii))) ;G0
+         (r6 |= (r0 == ,(charset-id 'latin-jisx0201)))
+         (if r6
+             ((write 0)
+              (write-repeat r1)))
+         (r6 = (r0 == ,(charset-id 'japanese-jisx0208)))
+         (r6 |= (r0 == ,(charset-id 'japanese-jisx0208-1978)))
+         (r6 |= (r0 == ,(charset-id 'japanese-jisx0213-1)))
+         (if r6                         ;G1
+             ((r2 = (r1 >> 7))
+              (write (r2 | ?\x80))
+              (write ((r1 & ?\x7f) | ?\x80))
+              (repeat)))
+         (if (r0 == ,(charset-id 'katakana-jisx0201)) ;G2
+             ((write 0)
+              (write (r1 | ?\x80))
+              (repeat)))
+         (r6 = (r0 == ,(charset-id 'japanese-jisx0212))) ;G3
+         (r6 |= (r0 == ,(charset-id 'japanese-jisx0213-2)))
+         (if r6
+             ((r2 = (r1 >> 7))
+              (write (r2 | ?\x80))
+              (write (r1 & ?\x7f))
+              (repeat)))
+         (repeat)))))
+
+   (make-coding-system 
+    'fixed-euc-jisx0213 4 ?W "Coding System for fixed EUC Japanese"
+    (cons ccl-decode-fixed-euc-jisx0213 ccl-encode-fixed-euc-jisx0213))))
+
+(provide 'egg-x0213)