125 lines
4.7 KiB
EmacsLisp
125 lines
4.7 KiB
EmacsLisp
;;; thai.el --- support for Thai -*- coding: utf-8; lexical-binding: t; -*-
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;; Copyright (C) 1997-1998, 2000-2024 Free Software Foundation, Inc.
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;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
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;; 2005, 2006, 2007, 2008, 2009, 2010, 2011
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;; National Institute of Advanced Industrial Science and Technology (AIST)
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;; Registration Number H13PRO009
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;; Copyright (C) 2005
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;; National Institute of Advanced Industrial Science and Technology (AIST)
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;; Registration Number H14PRO021
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;; Keywords: multilingual, Thai, i18n
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;; This file is part of GNU Emacs.
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;; GNU Emacs is free software: you can redistribute it and/or modify
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;; it under the terms of the GNU General Public License as published by
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;; the Free Software Foundation, either version 3 of the License, or
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;; (at your option) any later version.
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;; GNU Emacs is distributed in the hope that it will be useful,
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;; but WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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;; GNU General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs. If not, see <https://www.gnu.org/licenses/>.
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;;; Commentary:
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;; For Thai, the character set TIS620 is supported.
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;;; Code:
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(define-coding-system 'thai-tis620
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"8-bit encoding for ASCII (MSB=0) and Thai TIS620 (MSB=1)."
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:coding-type 'charset
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:mnemonic ?T
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:charset-list '(tis620-2533))
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(define-coding-system-alias 'th-tis620 'thai-tis620)
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(define-coding-system-alias 'tis620 'thai-tis620)
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(define-coding-system-alias 'tis-620 'thai-tis620)
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(set-language-info-alist
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"Thai" '((tutorial . "TUTORIAL.th")
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(charset thai-tis620)
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(coding-system thai-tis620 iso-8859-11 cp874)
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(coding-priority thai-tis620)
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(nonascii-translation . tis620-2533)
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(input-method . "thai-kesmanee")
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(unibyte-display . thai-tis620)
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(features thai-util)
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(setup-function . setup-thai-language-environment-internal)
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(exit-function . exit-thai-language-environment-internal)
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(sample-text
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. (thai-compose-string
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(copy-sequence "Thai (ภาษาไทย) สวัสดีครับ, สวัสดีค่ะ")))
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(documentation . t)))
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(define-coding-system 'cp874
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"DOS codepage 874 (Thai)"
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:coding-type 'charset
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:mnemonic ?D
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:charset-list '(cp874)
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:mime-charset 'cp874)
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(define-coding-system-alias 'ibm874 'cp874)
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(define-coding-system 'iso-8859-11
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"ISO/IEC 8859/11 (Latin/Thai)
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This is the same as `thai-tis620' with the addition of no-break-space."
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:coding-type 'charset
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:mnemonic ?*
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:mime-charset 'iso-8859-11 ; not actually registered as of 2002-05-24
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:charset-list '(iso-8859-11))
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;; For automatic composition.
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(let ((chars "ัิีึืฺุู็่้๊๋์ํ๎")
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(elt '(["[ก-ฯ].[่้๊๋์]?ำ?" 1 thai-composition-function]
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[nil 0 thai-composition-function])))
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(dotimes (i (length chars))
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(aset composition-function-table (aref chars i) elt)))
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(aset composition-function-table ?ำ '(["[ก-ฯ]." 1 thai-composition-function]))
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;; Tai-Tham
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(set-language-info-alist
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"Northern Thai" '((charset unicode)
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(coding-system utf-8)
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(coding-priority utf-8)
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(sample-text .
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"Northern Thai (ᨣᩣᩴᨾᩮᩬᩥᨦ / ᨽᩣᩈᩣᩃ᩶ᩣ᩠ᨶᨶᩣ) ᩈ᩠ᩅᩢᩔ᩠ᨯᩦᨣᩕᩢ᩠ᨸ")
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(documentation . t)))
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;; From Richard Wordingham <richard.wordingham@ntlworld.com>:
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(defvar tai-tham-composable-pattern
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(let ((table
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;; C is letters, independent vowels, digits, punctuation and symbols.
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'(("C" . "[\u1A20-\u1A54\u1A80-\u1A89\u1A90-\u1A99\u1AA0-\u1AAD]")
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("M" . ; Marks, CGJ, ZWNJ, ZWJ
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"[\u0324\u034F\u0E49\u0E4A\u0E4B\u1A55-\u1A57\u1A59-\u1A5E\u1A61-\u1A7C\u1A7F\u200C\200D]")
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("H" . "\u1A60") ; Sakot
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("S" . ; Marks commuting with sakot
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"[\u0E49-\u0E4B\u0EC9\u0ECB\u1A75-\u1A7C]")
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("N" . "\u1A58"))) ; mai kang lai
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(basic-syllable "C\\(N*\\(M\\|HS*C\\)\\)*")
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(regexp "X\\(N\\(X\\)?\\)*H?")) ; where X is basic syllable
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(let ((case-fold-search nil))
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(setq regexp (replace-regexp-in-string "X" basic-syllable regexp t t))
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(dolist (elt table)
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(setq regexp (replace-regexp-in-string (car elt) (cdr elt)
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regexp t t))))
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regexp))
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(let ((elt (list (vector tai-tham-composable-pattern 0 'font-shape-gstring)
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)))
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(set-char-table-range composition-function-table '(#x1A20 . #x1A54) elt)
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(set-char-table-range composition-function-table '(#x1A80 . #x1A89) elt)
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(set-char-table-range composition-function-table '(#x1A90 . #x1A99) elt)
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(set-char-table-range composition-function-table '(#x1AA0 . #x1AAD) elt))
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(provide 'thai)
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;;; thai.el ends here
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