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64fd2bb1 | 1 | ;;; thai-util.el --- utilities for Thai -*- coding: iso-2022-7bit; -*- |
4ed46869 | 2 | |
4ed46869 | 3 | ;; Copyright (C) 1995 Electrotechnical Laboratory, JAPAN. |
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4 | ;; Licensed to the Free Software Foundation. |
5 | ;; Copyright (C) 2003 | |
6 | ;; National Institute of Advanced Industrial Science and Technology (AIST) | |
7 | ;; Registration Number H13PRO009 | |
4ed46869 | 8 | |
ffdc0bca | 9 | ;; Keywords: mule, multilingual, Thai, i18n |
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10 | |
11 | ;; This file is part of GNU Emacs. | |
12 | ||
13 | ;; GNU Emacs is free software; you can redistribute it and/or modify | |
14 | ;; it under the terms of the GNU General Public License as published by | |
15 | ;; the Free Software Foundation; either version 2, or (at your option) | |
16 | ;; any later version. | |
17 | ||
18 | ;; GNU Emacs is distributed in the hope that it will be useful, | |
19 | ;; but WITHOUT ANY WARRANTY; without even the implied warranty of | |
20 | ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
21 | ;; GNU General Public License for more details. | |
22 | ||
23 | ;; You should have received a copy of the GNU General Public License | |
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24 | ;; along with GNU Emacs; see the file COPYING. If not, write to the |
25 | ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330, | |
26 | ;; Boston, MA 02111-1307, USA. | |
4ed46869 | 27 | |
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28 | ;;; Commentary: |
29 | ||
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30 | ;;; Code: |
31 | ||
32 | ;; Setting information of Thai characters. | |
33 | ||
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34 | (defconst thai-category-table (make-category-table)) |
35 | (define-category ?c "Thai consonant" thai-category-table) | |
36 | (define-category ?v "Thai upper/lower vowel" thai-category-table) | |
37 | (define-category ?t "Thai tone" thai-category-table) | |
38 | ||
39 | ;; The general composing rules are as follows: | |
40 | ;; | |
41 | ;; T | |
42 | ;; V T V T | |
43 | ;; CV -> C, CT -> C, CVT -> C, Cv -> C, CvT -> C | |
44 | ;; v v | |
45 | ;; | |
46 | ;; where C: consonant, V: vowel upper, v: vowel lower, T: tone mark. | |
47 | ||
48 | (defvar thai-composition-pattern "\\cc\\(\\ct\\|\\cv\\ct?\\)" | |
49 | "Regular expression matching a Thai composite sequence.") | |
3de54645 | 50 | |
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51 | (let ((l '((?\e,T!\e(B consonant "LETTER KO KAI") ; 0xA1 |
52 | (?\e,T"\e(B consonant "LETTER KHO KHAI") ; 0xA2 | |
53 | (?\e,T#\e(B consonant "LETTER KHO KHUAT") ; 0xA3 | |
54 | (?\e,T$\e(B consonant "LETTER KHO KHWAI") ; 0xA4 | |
55 | (?\e,T%\e(B consonant "LETTER KHO KHON") ; 0xA5 | |
56 | (?\e,T&\e(B consonant "LETTER KHO RAKHANG") ; 0xA6 | |
57 | (?\e,T'\e(B consonant "LETTER NGO NGU") ; 0xA7 | |
58 | (?\e,T(\e(B consonant "LETTER CHO CHAN") ; 0xA8 | |
59 | (?\e,T)\e(B consonant "LETTER CHO CHING") ; 0xA9 | |
60 | (?\e,T*\e(B consonant "LETTER CHO CHANG") ; 0xAA | |
61 | (?\e,T+\e(B consonant "LETTER SO SO") ; 0xAB | |
62 | (?\e,T,\e(B consonant "LETTER CHO CHOE") ; 0xAC | |
63 | (?\e,T-\e(B consonant "LETTER YO YING") ; 0xAD | |
64 | (?\e,T.\e(B consonant "LETTER DO CHADA") ; 0xAE | |
65 | (?\e,T/\e(B consonant "LETTER TO PATAK") ; 0xAF | |
66 | (?\e,T0\e(B consonant "LETTER THO THAN") ; 0xB0 | |
67 | (?\e,T1\e(B consonant "LETTER THO NANGMONTHO") ; 0xB1 | |
68 | (?\e,T2\e(B consonant "LETTER THO PHUTHAO") ; 0xB2 | |
69 | (?\e,T3\e(B consonant "LETTER NO NEN") ; 0xB3 | |
70 | (?\e,T4\e(B consonant "LETTER DO DEK") ; 0xB4 | |
71 | (?\e,T5\e(B consonant "LETTER TO TAO") ; 0xB5 | |
72 | (?\e,T6\e(B consonant "LETTER THO THUNG") ; 0xB6 | |
73 | (?\e,T7\e(B consonant "LETTER THO THAHAN") ; 0xB7 | |
74 | (?\e,T8\e(B consonant "LETTER THO THONG") ; 0xB8 | |
75 | (?\e,T9\e(B consonant "LETTER NO NU") ; 0xB9 | |
76 | (?\e,T:\e(B consonant "LETTER BO BAIMAI") ; 0xBA | |
77 | (?\e,T;\e(B consonant "LETTER PO PLA") ; 0xBB | |
78 | (?\e,T<\e(B consonant "LETTER PHO PHUNG") ; 0xBC | |
79 | (?\e,T=\e(B consonant "LETTER FO FA") ; 0xBD | |
80 | (?\e,T>\e(B consonant "LETTER PHO PHAN") ; 0xBE | |
81 | (?\e,T?\e(B consonant "LETTER FO FAN") ; 0xBF | |
82 | (?\e,T@\e(B consonant "LETTER PHO SAMPHAO") ; 0xC0 | |
83 | (?\e,TA\e(B consonant "LETTER MO MA") ; 0xC1 | |
84 | (?\e,TB\e(B consonant "LETTER YO YAK") ; 0xC2 | |
85 | (?\e,TC\e(B consonant "LETTER RO RUA") ; 0xC3 | |
86 | (?\e,TD\e(B vowel-base "LETTER RU (Pali vowel letter)") ; 0xC4 | |
87 | (?\e,TE\e(B consonant "LETTER LO LING") ; 0xC5 | |
88 | (?\e,TF\e(B vowel-base "LETTER LU (Pali vowel letter)") ; 0xC6 | |
89 | (?\e,TG\e(B consonant "LETTER WO WAEN") ; 0xC7 | |
90 | (?\e,TH\e(B consonant "LETTER SO SALA") ; 0xC8 | |
91 | (?\e,TI\e(B consonant "LETTER SO RUSI") ; 0xC9 | |
92 | (?\e,TJ\e(B consonant "LETTER SO SUA") ; 0xCA | |
93 | (?\e,TK\e(B consonant "LETTER HO HIP") ; 0xCB | |
94 | (?\e,TL\e(B consonant "LETTER LO CHULA") ; 0xCC | |
95 | (?\e,TM\e(B consonant "LETTER O ANG") ; 0xCD | |
96 | (?\e,TN\e(B consonant "LETTER HO NOK HUK") ; 0xCE | |
97 | (?\e,TO\e(B special "PAI YAN NOI (abbreviation)") ; 0xCF | |
98 | (?\e,TP\e(B vowel-base "VOWEL SIGN SARA A") ; 0xD0 | |
99 | (?\e,TQ\e(B vowel-upper "VOWEL SIGN MAI HAN-AKAT N/S-T") ; 0xD1 | |
100 | (?\e,TR\e(B vowel-base "VOWEL SIGN SARA AA") ; 0xD2 | |
101 | (?\e,TS\e(B vowel-base "VOWEL SIGN SARA AM") ; 0xD3 | |
102 | (?\e,TT\e(B vowel-upper "VOWEL SIGN SARA I N/S-T") ; 0xD4 | |
103 | (?\e,TU\e(B vowel-upper "VOWEL SIGN SARA II N/S-T") ; 0xD5 | |
104 | (?\e,TV\e(B vowel-upper "VOWEL SIGN SARA UE N/S-T") ; 0xD6 | |
105 | (?\e,TW\e(B vowel-upper "VOWEL SIGN SARA UEE N/S-T") ; 0xD7 | |
106 | (?\e,TX\e(B vowel-lower "VOWEL SIGN SARA U N/S-B") ; 0xD8 | |
107 | (?\e,TY\e(B vowel-lower "VOWEL SIGN SARA UU N/S-B") ; 0xD9 | |
108 | (?\e,TZ\e(B vowel-lower "VOWEL SIGN PHINTHU N/S-B (Pali virama)") ; 0xDA | |
109 | (?\e,T[\e(B invalid nil) ; 0xDA | |
110 | (?\e,T\\e(B invalid nil) ; 0xDC | |
111 | (?\e,T]\e(B invalid nil) ; 0xDC | |
112 | (?\e,T^\e(B invalid nil) ; 0xDC | |
113 | (?\e,T_\e(B special "BAHT SIGN (currency symbol)") ; 0xDF | |
114 | (?\e,T`\e(B vowel-base "VOWEL SIGN SARA E") ; 0xE0 | |
115 | (?\e,Ta\e(B vowel-base "VOWEL SIGN SARA AE") ; 0xE1 | |
116 | (?\e,Tb\e(B vowel-base "VOWEL SIGN SARA O") ; 0xE2 | |
117 | (?\e,Tc\e(B vowel-base "VOWEL SIGN SARA MAI MUAN") ; 0xE3 | |
118 | (?\e,Td\e(B vowel-base "VOWEL SIGN SARA MAI MALAI") ; 0xE4 | |
119 | (?\e,Te\e(B vowel-base "LAK KHANG YAO") ; 0xE5 | |
120 | (?\e,Tf\e(B special "MAI YAMOK (repetion)") ; 0xE6 | |
121 | (?\e,Tg\e(B vowel-upper "VOWEL SIGN MAI TAI KHU N/S-T") ; 0xE7 | |
122 | (?\e,Th\e(B tone "TONE MAI EK N/S-T") ; 0xE8 | |
123 | (?\e,Ti\e(B tone "TONE MAI THO N/S-T") ; 0xE9 | |
124 | (?\e,Tj\e(B tone "TONE MAI TRI N/S-T") ; 0xEA | |
125 | (?\e,Tk\e(B tone "TONE MAI CHATTAWA N/S-T") ; 0xEB | |
126 | (?\e,Tl\e(B tone "THANTHAKHAT N/S-T (cancellation mark)") ; 0xEC | |
127 | (?\e,Tm\e(B tone "NIKKHAHIT N/S-T (final nasal)") ; 0xED | |
128 | (?\e,Tn\e(B vowel-upper "YAMAKKAN N/S-T") ; 0xEE | |
129 | (?\e,To\e(B special "FONRMAN") ; 0xEF | |
130 | (?\e,Tp\e(B special "DIGIT ZERO") ; 0xF0 | |
131 | (?\e,Tq\e(B special "DIGIT ONE") ; 0xF1 | |
132 | (?\e,Tr\e(B special "DIGIT TWO") ; 0xF2 | |
133 | (?\e,Ts\e(B special "DIGIT THREE") ; 0xF3 | |
134 | (?\e,Tt\e(B special "DIGIT FOUR") ; 0xF4 | |
135 | (?\e,Tu\e(B special "DIGIT FIVE") ; 0xF5 | |
136 | (?\e,Tv\e(B special "DIGIT SIX") ; 0xF6 | |
137 | (?\e,Tw\e(B special "DIGIT SEVEN") ; 0xF7 | |
138 | (?\e,Tx\e(B special "DIGIT EIGHT") ; 0xF8 | |
139 | (?\e,Ty\e(B special "DIGIT NINE") ; 0xF9 | |
140 | (?\e,Tz\e(B special "ANGKHANKHU (ellipsis)") ; 0xFA | |
141 | (?\e,T{\e(B special "KHOMUT (beginning of religious texts)") ; 0xFB | |
142 | (?\e,T|\e(B invalid nil) ; 0xFC | |
143 | (?\e,T}\e(B invalid nil) ; 0xFD | |
144 | (?\e,T~\e(B invalid nil) ; 0xFE | |
145 | )) | |
146 | elm) | |
147 | (while l | |
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148 | (setq elm (car l) l (cdr l)) |
149 | (let ((char (car elm)) | |
150 | (ptype (nth 1 elm))) | |
151 | (put-char-code-property char 'phonetic-type ptype) | |
152 | (cond ((eq ptype 'consonant) | |
153 | (modify-category-entry char ?c thai-category-table)) | |
154 | ((memq ptype '(vowel-upper vowel-lower)) | |
155 | (modify-category-entry char ?v thai-category-table)) | |
156 | ((eq ptype 'tone) | |
157 | (modify-category-entry char ?t thai-category-table))) | |
158 | (put-char-code-property char 'name (nth 2 elm))))) | |
3de54645 | 159 | |
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160 | ;;;###autoload |
161 | (defun thai-compose-region (beg end) | |
162 | "Compose Thai characters in the region. | |
163 | When called from a program, expects two arguments, | |
164 | positions (integers or markers) specifying the region." | |
165 | (interactive "r") | |
166 | (save-restriction | |
167 | (narrow-to-region beg end) | |
4ed46869 | 168 | (goto-char (point-min)) |
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169 | (with-category-table thai-category-table |
170 | (while (re-search-forward thai-composition-pattern nil t) | |
171 | (compose-region (match-beginning 0) (match-end 0)))))) | |
4ed46869 | 172 | |
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173 | ;;;###autoload |
174 | (defun thai-compose-string (string) | |
175 | "Compose Thai characters in STRING and return the resulting string." | |
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176 | (with-category-table thai-category-table |
177 | (let ((idx 0)) | |
178 | (while (setq idx (string-match thai-composition-pattern string idx)) | |
179 | (compose-string string idx (match-end 0)) | |
180 | (setq idx (match-end 0))))) | |
181 | string) | |
a1506d29 | 182 | |
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183 | ;;;###autoload |
184 | (defun thai-compose-buffer () | |
185 | "Compose Thai characters in the current buffer." | |
186 | (interactive) | |
187 | (thai-compose-region (point-min) (point-max))) | |
188 | ||
189 | ;;;###autoload | |
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190 | (defun thai-composition-function (pos &optional string) |
191 | (setq pos (1- pos)) | |
192 | (let ((pattern "[\e,T!\e(B-\e,TCEG\e(B-\e,TN!\e(B-\e,TCEG\e(B-\e,TN\e(B][\e,TQT\e(B-\e,TWgnX\e(B-\e,TZQT\e(B-\e,TWgnX\e(B-\e,TZ\e(B]?[\e,Th\e(B-\e,Tmh\e(B-\e,Tm\e(B]?")) | |
193 | (if string | |
194 | (if (and (>= pos 0) | |
195 | (eq (string-match pattern string pos) pos)) | |
196 | (prog1 (match-end 0) | |
197 | (compose-string string pos (match-end 0)))) | |
198 | (if (>= pos (point-min)) | |
199 | (progn | |
200 | (goto-char pos) | |
201 | (if (looking-at pattern) | |
202 | (prog1 (match-end 0) | |
203 | (compose-region pos (match-end 0))))))))) | |
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204 | |
205 | ;; | |
650e8505 | 206 | (provide 'thai-util) |
4ed46869 | 207 | |
6b61353c | 208 | ;;; arch-tag: 59425d6a-8cf9-4e06-a6ab-8ab7dc7a7a97 |
4ed46869 | 209 | ;;; thai-util.el ends here |