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[xemacs-hg @ 2002-03-13 08:51:24 by ben] The big ben-mule-21-5 check-in! Various files were added and deleted. See CHANGES-ben-mule. There are still some test suite failures. No crashes, though. Many of the failures have to do with problems in the test suite itself rather than in the actual code. I'll be addressing these in the next day or so -- none of the test suite failures are at all critical. Meanwhile I'll be trying to address the biggest issues -- i.e. build or run failures, which will almost certainly happen on various platforms. All comments should be sent to ben@xemacs.org -- use a Cc: if necessary when sending to mailing lists. There will be pre- and post- tags, something like pre-ben-mule-21-5-merge-in, and post-ben-mule-21-5-merge-in.
author ben
date Wed, 13 Mar 2002 08:54:06 +0000
parents 576fb035e263
children 578cb2932d72
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line source

;;; thai-xtis.el --- Support for Thai (XTIS) -*- coding: iso-2022-7bit; -*-

;; Copyright (C) 1999 Electrotechnical Laboratory, JAPAN.
;; Licensed to the Free Software Foundation.

;; Author: TAKAHASHI Naoto <ntakahas@etl.go.jp>
;;         MORIOKA Tomohiko <tomo@etl.go.jp>
;; Created: 1998-03-27 for Emacs-20.3 by TAKAHASHI Naoto
;;	    1999-03-29 imported and modified for XEmacs	by MORIOKA Tomohiko

;; Keywords: mule, multilingual, Thai, XTIS

;; This file is part of XEmacs.

;; XEmacs 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.

;; XEmacs 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 XEmacs; see the file COPYING.  If not, write to the Free
;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
;; 02111-1307, USA.

;;; Commentary:

;; For Thai, the pre-composed character set proposed by
;; Virach Sornlertlamvanich <virach@links.nectec.or.th> is supported.

;;; Code:

(when (featurep 'xemacs)
  (let ((deflist	'(;; chars	syntax
			  ("$(?!0(B-$(?NxP0R0S0`0(B-$(?e0(B"	"w")
			  ("$(?p0(B-$(?y0(B"	"w")
			  ("$(?O0f0_0o0z0{0(B"	"_")
			  ))
	elm chars len syntax to ch i)
    (while deflist
      (setq elm (car deflist))
      (setq chars (car elm)
	    len (length chars)
	    syntax (nth 1 elm)
	    i 0)
      (while (< i len)
	(if (= (aref chars i) ?-)
	    (setq i (1+ i)
		  to (nth 1 (split-char (aref chars i))))
	  (setq ch (nth 1 (split-char (aref chars i)))
		to ch))
	(while (<= ch to)
	  (modify-syntax-entry (vector 'thai-xtis ch) syntax)
	  (setq ch (1+ ch)))
	(setq i (1+ i)))
      (setq deflist (cdr deflist))))

  (put-charset-property 'thai-xtis 'preferred-coding-system 'tis-620)
  )

;; This is the ccl-decode-thai-xtis automaton.
;;
;; "WRITE x y" == (insert (make-char 'thai-xtis x y))
;; "write x" == (insert x)
;; rx' == (tis620-to-thai-xtis-second-byte-bitpattern rx)
;; r3 == "no vower nor tone"
;; r4 == (charset-id 'thai-xtis)
;; 
;;          |               input (= r0)
;;   state  |--------------------------------------------
;;          |  consonant  |    vowel    |    tone
;; ---------+-------------+-------------+----------------
;;  r1 == 0 | r1 = r0     | WRITE r0,r3 | WRITE r0,r3
;;  r2 == 0 |             |             |
;; ---------+-------------+-------------+----------------
;;  r1 == C | WRITE r1,r3 | r2 = r0'    | WRITE r1,r3|r0'
;;  r2 == 0 | r1 = r0     |             | r1 = 0
;; ---------+-------------+-------------+----------------
;;  r1 == C | WRITE r1,r2 | WRITE r1,r2 | WRITE r1,r2|r0'
;;  r2 == V | r1 = r0     | WRITE r0,r3 | r1 = r2 = 0
;;          | r2 = 0      | r1 = r2 = 0 |
;; 
;; 
;;          |               input (= r0) 
;;   state  |-----------------------------------------
;;          |    symbol   |    ASCII    |     EOF
;; ---------+-------------+-------------+-------------
;;  r1 == 0 | WRITE r0,r3 | write r0    |
;;  r2 == 0 |             |             |
;; ---------+-------------+-------------+-------------
;;  r1 == C | WRITE r1,r3 | WRITE r1,r3 | WRITE r1,r3
;;  r2 == 0 | WRITE r0,r3 | write r0    |
;;          | r1 = 0      | r1 = 0      |
;; ---------+-------------+-------------+-------------
;;  r1 == C | WRITE r1,r2 | WRITE r1,r2 | WRITE r1,r2
;;  r2 == V | WRITE r0,r3 | write r0    |
;;          | r1 = r2 = 0 | r1 = r2 = 0 |


(eval-and-compile

;; input  : r5 = 1st byte, r6 = 2nd byte
;; Their values will be destroyed.
(define-ccl-program ccl-thai-xtis-write
  '(0
    ((r5 = ((r5 & #x7F) << 7))
     (r6 = ((r6 & #x7F) | r5))
     (write-multibyte-character r4 r6))))

(define-ccl-program ccl-thai-xtis-consonant
  '(0
    (if (r1 == 0)
	(r1 = r0)
      (if (r2 == 0)
	  ((r5 = r1) (r6 = r3) (call ccl-thai-xtis-write)
	   (r1 = r0))
	((r5 = r1) (r6 = r2) (call ccl-thai-xtis-write)
	 (r1 = r0)
	 (r2 = 0))))))

(define-ccl-program ccl-thai-xtis-vowel
  '(0
    ((if (r1 == 0)
	 ((r5 = r0) (r6 = r3) (call ccl-thai-xtis-write))
       ((if (r2 == 0)
	    (r2 = ((r0 - 204) << 3))
	  ((r5 = r1) (r6 = r2) (call ccl-thai-xtis-write)
	   (r5 = r0) (r6 = r3) (call ccl-thai-xtis-write)
	   (r1 = 0)
	   (r2 = 0))))))))

(define-ccl-program ccl-thai-xtis-vowel-d1
  '(0
    ((if (r1 == 0)
	 ((r5 = r0) (r6 = r3) (call ccl-thai-xtis-write))
       ((if (r2 == 0)
	    (r2 = #x38)
	  ((r5 = r1) (r6 = r2) (call ccl-thai-xtis-write)
	   (r5 = r0) (r6 = r3) (call ccl-thai-xtis-write)
	   (r1 = 0)
	   (r2 = 0))))))))

(define-ccl-program ccl-thai-xtis-vowel-ee
  '(0
    ((if (r1 == 0)
	 ((r5 = r0) (r6 = r3) (call ccl-thai-xtis-write))
       ((if (r2 == 0)
	    (r2 = #x78)
	  ((r5 = r1) (r6 = r2) (call ccl-thai-xtis-write)
	   (r5 = r0) (r6 = r3) (call ccl-thai-xtis-write)
	   (r1 = 0)
	   (r2 = 0))))))))

(define-ccl-program ccl-thai-xtis-tone
  '(0
    (if (r1 == 0)
	((r5 = r0) (r6 = r3) (call ccl-thai-xtis-write))
      (if (r2 == 0)
	  ((r5 = r1) (r6 = ((r0 - #xE6) | r3)) (call ccl-thai-xtis-write)
	   (r1 = 0))
	((r5 = r1) (r6 = ((r0 - #xE6) | r2)) (call ccl-thai-xtis-write)
	 (r1 = 0)
	 (r2 = 0))))))

(define-ccl-program ccl-thai-xtis-symbol
  '(0
    (if (r1 == 0)
	((r5 = r0) (r6 = r3) (call ccl-thai-xtis-write))
      (if (r2 == 0)
	  ((r5 = r1) (r6 = r3) (call ccl-thai-xtis-write)
	   (r5 = r0) (r6 = r3) (call ccl-thai-xtis-write)
	   (r1 = 0))
	((r5 = r1) (r6 = r2) (call ccl-thai-xtis-write)
	 (r5 = r0) (r6 = r3) (call ccl-thai-xtis-write)
	 (r1 = 0)
	 (r2 = 0))))))

(define-ccl-program ccl-thai-xtis-ascii
  '(0
    (if (r1 == 0)
	(write r0)
      (if (r2 == 0)
	  ((r5 = r1) (r6 = r3) (call ccl-thai-xtis-write)
	   (write r0)
	   (r1 = 0))
	((r5 = r1) (r6 = r2) (call ccl-thai-xtis-write)
	 (write r0)
	 (r1 = 0)
	 (r2 = 0))))))

(define-ccl-program ccl-thai-xtis-eof
  '(0
    (if (r1 != 0)
	(if (r2 == 0)
	    ((r5 = r1) (r6 = r3) (call ccl-thai-xtis-write))
	  ((r5 = r1) (r6 = r2) (call ccl-thai-xtis-write))))))

(define-ccl-program ccl-decode-thai-xtis
  `(4
    ((read r0)
     (r1 = 0)
     (r2 = 0)
     (r3 = #x30)
     (r4 = ,(charset-id 'thai-xtis))
     (loop
      (if (r0 < 161)
	  (call ccl-thai-xtis-ascii)
	(branch (r0 - 161)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-symbol)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-symbol)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-consonant)
		(call ccl-thai-xtis-symbol)
		(call ccl-thai-xtis-symbol)
		(call ccl-thai-xtis-vowel-d1)
		(call ccl-thai-xtis-symbol)
		(call ccl-thai-xtis-symbol)
		(call ccl-thai-xtis-vowel)
		(call ccl-thai-xtis-vowel)
		(call ccl-thai-xtis-vowel)
		(call ccl-thai-xtis-vowel)
		(call ccl-thai-xtis-vowel)
		(call ccl-thai-xtis-vowel)
		(call ccl-thai-xtis-vowel)
		nil
		nil
		nil
		nil
		(call ccl-thai-xtis-symbol)
		(call ccl-thai-xtis-symbol)
		(call ccl-thai-xtis-symbol)
		(call ccl-thai-xtis-symbol)
		(call ccl-thai-xtis-symbol)
		(call ccl-thai-xtis-symbol)
		(call ccl-thai-xtis-symbol)
		(call ccl-thai-xtis-symbol)
		(call ccl-thai-xtis-tone)
		(call ccl-thai-xtis-tone)
		(call ccl-thai-xtis-tone)
		(call ccl-thai-xtis-tone)
		(call ccl-thai-xtis-tone)
		(call ccl-thai-xtis-tone)
		(call ccl-thai-xtis-tone)
		(call ccl-thai-xtis-vowel-ee)
		(call ccl-thai-xtis-symbol)
		(call ccl-thai-xtis-symbol)
		(call ccl-thai-xtis-symbol)
		(call ccl-thai-xtis-symbol)
		(call ccl-thai-xtis-symbol)
		(call ccl-thai-xtis-symbol)
		(call ccl-thai-xtis-symbol)
		(call ccl-thai-xtis-symbol)
		(call ccl-thai-xtis-symbol)
		(call ccl-thai-xtis-symbol)
		(call ccl-thai-xtis-symbol)
		(call ccl-thai-xtis-symbol)
		(call ccl-thai-xtis-symbol)
		nil
		nil
		nil))
      (read r0)
      (repeat)))

    (call ccl-thai-xtis-eof)))

)

(defconst leading-code-private-21 #x9F)

(define-ccl-program ccl-encode-thai-xtis
  `(1
    ((read r0)
     (loop
      (if (r0 == ,leading-code-private-21)
	  ((read r1)
	   (if (r1 == ,(charset-id 'thai-xtis))
	       ((read r0)
		(write r0)
		(read r0)
		(r1 = (r0 & 7))
		(r0 = ((r0 - #xB0) >> 3))
		(if (r0 != 0)
		    (write r0 [0 209 212 213 214 215 216 217 218 238]))
		(if (r1 != 0)
		    (write r1 [0 231 232 233 234 235 236 237]))
		(read r0)
		(repeat))
	     ((write r0 r1)
	      (read r0)
	      (repeat))))
	(write-read-repeat r0))))))

(if (featurep 'xemacs)
    (progn
      (make-coding-system
       'tis-620 'ccl
       "TIS620 (Thai)"
       `(mnemonic "TIS620"
	 decode ccl-decode-thai-xtis
	 encode ccl-encode-thai-xtis
	 documentation "external=tis620, internal=thai-xtis"))
      (coding-system-put 'tis-620 'category 'iso-8-1))
  (make-coding-system
   'tis-620 4 ?T "external=tis620, internal=thai-xtis"
   '(ccl-decode-thai-xtis . ccl-encode-thai-xtis)
   '((safe-charsets . t)))
  )


(set-language-info-alist
 "Thai-XTIS"
 '((charset thai-xtis)
   (coding-system tis-620 iso-2022-7bit)
   (tutorial . "TUTORIAL.th")
   (tutorial-coding-system . tis-620)
   (coding-priority tis-620 iso-2022-7bit)
   (sample-text . "$(?!:(B")
   (documentation . t)))

;; thai-xtis.el ends here.