1 ;;; thai-util.el --- utilities for Thai -*- coding: iso-2022-7bit; -*-
3 ;; Copyright (C) 1995 Electrotechnical Laboratory, JAPAN.
4 ;; Licensed to the Free Software Foundation.
6 ;; Keywords: mule, multilingual, thai
8 ;; This file is part of GNU Emacs.
10 ;; GNU Emacs is free software; you can redistribute it and/or modify
11 ;; it under the terms of the GNU General Public License as published by
12 ;; the Free Software Foundation; either version 2, or (at your option)
15 ;; GNU Emacs is distributed in the hope that it will be useful,
16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 ;; GNU General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with GNU Emacs; see the file COPYING. If not, write to the
22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 ;; Boston, MA 02111-1307, USA.
29 ;; Setting information of Thai characters.
31 (defconst thai-category-table (make-category-table))
32 (define-category ?c "Thai consonant" thai-category-table)
33 (define-category ?v "Thai upper/lower vowel" thai-category-table)
34 (define-category ?t "Thai tone" thai-category-table)
36 ;; The general composing rules are as follows:
40 ;; CV -> C, CT -> C, CVT -> C, Cv -> C, CvT -> C
43 ;; where C: consonant, V: vowel upper, v: vowel lower, T: tone mark.
45 (defvar thai-composition-pattern "\\cc\\(\\ct\\|\\cv\\ct?\\)"
46 "Regular expression matching a Thai composite sequence.")
48 (let ((l '((?
\e,T!
\e(B consonant "LETTER KO KAI") ; 0xA1
49 (?
\e,T"
\e(B consonant "LETTER KHO KHAI") ; 0xA2
50 (?
\e,T#
\e(B consonant "LETTER KHO KHUAT") ; 0xA3
51 (?
\e,T$
\e(B consonant "LETTER KHO KHWAI") ; 0xA4
52 (?
\e,T%
\e(B consonant "LETTER KHO KHON") ; 0xA5
53 (?
\e,T&
\e(B consonant "LETTER KHO RAKHANG") ; 0xA6
54 (?
\e,T'
\e(B consonant "LETTER NGO NGU") ; 0xA7
55 (?
\e,T(
\e(B consonant "LETTER CHO CHAN") ; 0xA8
56 (?
\e,T)
\e(B consonant "LETTER CHO CHING") ; 0xA9
57 (?
\e,T*
\e(B consonant "LETTER CHO CHANG") ; 0xAA
58 (?
\e,T+
\e(B consonant "LETTER SO SO") ; 0xAB
59 (?
\e,T,
\e(B consonant "LETTER CHO CHOE") ; 0xAC
60 (?
\e,T-
\e(B consonant "LETTER YO YING") ; 0xAD
61 (?
\e,T.
\e(B consonant "LETTER DO CHADA") ; 0xAE
62 (?
\e,T/
\e(B consonant "LETTER TO PATAK") ; 0xAF
63 (?
\e,T0
\e(B consonant "LETTER THO THAN") ; 0xB0
64 (?
\e,T1
\e(B consonant "LETTER THO NANGMONTHO") ; 0xB1
65 (?
\e,T2
\e(B consonant "LETTER THO PHUTHAO") ; 0xB2
66 (?
\e,T3
\e(B consonant "LETTER NO NEN") ; 0xB3
67 (?
\e,T4
\e(B consonant "LETTER DO DEK") ; 0xB4
68 (?
\e,T5
\e(B consonant "LETTER TO TAO") ; 0xB5
69 (?
\e,T6
\e(B consonant "LETTER THO THUNG") ; 0xB6
70 (?
\e,T7
\e(B consonant "LETTER THO THAHAN") ; 0xB7
71 (?
\e,T8
\e(B consonant "LETTER THO THONG") ; 0xB8
72 (?
\e,T9
\e(B consonant "LETTER NO NU") ; 0xB9
73 (?
\e,T:
\e(B consonant "LETTER BO BAIMAI") ; 0xBA
74 (?
\e,T;
\e(B consonant "LETTER PO PLA") ; 0xBB
75 (?
\e,T<
\e(B consonant "LETTER PHO PHUNG") ; 0xBC
76 (?
\e,T=
\e(B consonant "LETTER FO FA") ; 0xBD
77 (?
\e,T>
\e(B consonant "LETTER PHO PHAN") ; 0xBE
78 (?
\e,T?
\e(B consonant "LETTER FO FAN") ; 0xBF
79 (?
\e,T@
\e(B consonant "LETTER PHO SAMPHAO") ; 0xC0
80 (?
\e,TA
\e(B consonant "LETTER MO MA") ; 0xC1
81 (?
\e,TB
\e(B consonant "LETTER YO YAK") ; 0xC2
82 (?
\e,TC
\e(B consonant "LETTER RO RUA") ; 0xC3
83 (?
\e,TD
\e(B vowel-base "LETTER RU (Pali vowel letter)") ; 0xC4
84 (?
\e,TE
\e(B consonant "LETTER LO LING") ; 0xC5
85 (?
\e,TF
\e(B vowel-base "LETTER LU (Pali vowel letter)") ; 0xC6
86 (?
\e,TG
\e(B consonant "LETTER WO WAEN") ; 0xC7
87 (?
\e,TH
\e(B consonant "LETTER SO SALA") ; 0xC8
88 (?
\e,TI
\e(B consonant "LETTER SO RUSI") ; 0xC9
89 (?
\e,TJ
\e(B consonant "LETTER SO SUA") ; 0xCA
90 (?
\e,TK
\e(B consonant "LETTER HO HIP") ; 0xCB
91 (?
\e,TL
\e(B consonant "LETTER LO CHULA") ; 0xCC
92 (?
\e,TM
\e(B consonant "LETTER O ANG") ; 0xCD
93 (?
\e,TN
\e(B consonant "LETTER HO NOK HUK") ; 0xCE
94 (?
\e,TO
\e(B special "PAI YAN NOI (abbreviation)") ; 0xCF
95 (?
\e,TP
\e(B vowel-base "VOWEL SIGN SARA A") ; 0xD0
96 (?
\e,TQ
\e(B vowel-upper "VOWEL SIGN MAI HAN-AKAT N/S-T") ; 0xD1
97 (?
\e,TR
\e(B vowel-base "VOWEL SIGN SARA AA") ; 0xD2
98 (?
\e,TS
\e(B vowel-base "VOWEL SIGN SARA AM") ; 0xD3
99 (?
\e,TT
\e(B vowel-upper "VOWEL SIGN SARA I N/S-T") ; 0xD4
100 (?
\e,TU
\e(B vowel-upper "VOWEL SIGN SARA II N/S-T") ; 0xD5
101 (?
\e,TV
\e(B vowel-upper "VOWEL SIGN SARA UE N/S-T") ; 0xD6
102 (?
\e,TW
\e(B vowel-upper "VOWEL SIGN SARA UEE N/S-T") ; 0xD7
103 (?
\e,TX
\e(B vowel-lower "VOWEL SIGN SARA U N/S-B") ; 0xD8
104 (?
\e,TY
\e(B vowel-lower "VOWEL SIGN SARA UU N/S-B") ; 0xD9
105 (?
\e,TZ
\e(B vowel-lower "VOWEL SIGN PHINTHU N/S-B (Pali virama)") ; 0xDA
106 (?
\e,T[
\e(B invalid nil) ; 0xDA
107 (?
\e,T\
\e(B invalid nil) ; 0xDC
108 (?
\e,T]
\e(B invalid nil) ; 0xDC
109 (?
\e,T^
\e(B invalid nil) ; 0xDC
110 (?
\e,T_
\e(B special "BAHT SIGN (currency symbol)") ; 0xDF
111 (?
\e,T`
\e(B vowel-base "VOWEL SIGN SARA E") ; 0xE0
112 (?
\e,Ta
\e(B vowel-base "VOWEL SIGN SARA AE") ; 0xE1
113 (?
\e,Tb
\e(B vowel-base "VOWEL SIGN SARA O") ; 0xE2
114 (?
\e,Tc
\e(B vowel-base "VOWEL SIGN SARA MAI MUAN") ; 0xE3
115 (?
\e,Td
\e(B vowel-base "VOWEL SIGN SARA MAI MALAI") ; 0xE4
116 (?
\e,Te
\e(B vowel-base "LAK KHANG YAO") ; 0xE5
117 (?
\e,Tf
\e(B special "MAI YAMOK (repetion)") ; 0xE6
118 (?
\e,Tg
\e(B vowel-upper "VOWEL SIGN MAI TAI KHU N/S-T") ; 0xE7
119 (?
\e,Th
\e(B tone "TONE MAI EK N/S-T") ; 0xE8
120 (?
\e,Ti
\e(B tone "TONE MAI THO N/S-T") ; 0xE9
121 (?
\e,Tj
\e(B tone "TONE MAI TRI N/S-T") ; 0xEA
122 (?
\e,Tk
\e(B tone "TONE MAI CHATTAWA N/S-T") ; 0xEB
123 (?
\e,Tl
\e(B tone "THANTHAKHAT N/S-T (cancellation mark)") ; 0xEC
124 (?
\e,Tm
\e(B tone "NIKKHAHIT N/S-T (final nasal)") ; 0xED
125 (?
\e,Tn
\e(B vowel-upper "YAMAKKAN N/S-T") ; 0xEE
126 (?
\e,To
\e(B special "FONRMAN") ; 0xEF
127 (?
\e,Tp
\e(B special "DIGIT ZERO") ; 0xF0
128 (?
\e,Tq
\e(B special "DIGIT ONE") ; 0xF1
129 (?
\e,Tr
\e(B special "DIGIT TWO") ; 0xF2
130 (?
\e,Ts
\e(B special "DIGIT THREE") ; 0xF3
131 (?
\e,Tt
\e(B special "DIGIT FOUR") ; 0xF4
132 (?
\e,Tu
\e(B special "DIGIT FIVE") ; 0xF5
133 (?
\e,Tv
\e(B special "DIGIT SIX") ; 0xF6
134 (?
\e,Tw
\e(B special "DIGIT SEVEN") ; 0xF7
135 (?
\e,Tx
\e(B special "DIGIT EIGHT") ; 0xF8
136 (?
\e,Ty
\e(B special "DIGIT NINE") ; 0xF9
137 (?
\e,Tz
\e(B special "ANGKHANKHU (ellipsis)") ; 0xFA
138 (?
\e,T{
\e(B special "KHOMUT (beginning of religious texts)") ; 0xFB
139 (?
\e,T|
\e(B invalid nil) ; 0xFC
140 (?
\e,T}
\e(B invalid nil) ; 0xFD
141 (?
\e,T~
\e(B invalid nil) ; 0xFE
143 ;; Unicode equivalents
144 (?
\e$,1Ba
\e(B consonant "LETTER KO KAI")
145 (?
\e$,1Bb
\e(B consonant "LETTER KHO KHAI")
146 (?
\e$,1Bc
\e(B consonant "LETTER KHO KHUAT")
147 (?
\e$,1Bd
\e(B consonant "LETTER KHO KHWAI")
148 (?
\e$,1Be
\e(B consonant "LETTER KHO KHON")
149 (?
\e$,1Bf
\e(B consonant "LETTER KHO RAKHANG")
150 (?
\e$,1Bg
\e(B consonant "LETTER NGO NGU")
151 (?
\e$,1Bh
\e(B consonant "LETTER CHO CHAN")
152 (?
\e$,1Bi
\e(B consonant "LETTER CHO CHING")
153 (?
\e$,1Bj
\e(B consonant "LETTER CHO CHANG")
154 (?
\e$,1Bk
\e(B consonant "LETTER SO SO")
155 (?
\e$,1Bl
\e(B consonant "LETTER CHO CHOE")
156 (?
\e$,1Bm
\e(B consonant "LETTER YO YING")
157 (?
\e$,1Bn
\e(B consonant "LETTER DO CHADA")
158 (?
\e$,1Bo
\e(B consonant "LETTER TO PATAK")
159 (?
\e$,1Bp
\e(B consonant "LETTER THO THAN")
160 (?
\e$,1Bq
\e(B consonant "LETTER THO NANGMONTHO")
161 (?
\e$,1Br
\e(B consonant "LETTER THO PHUTHAO")
162 (?
\e$,1Bs
\e(B consonant "LETTER NO NEN")
163 (?
\e$,1Bt
\e(B consonant "LETTER DO DEK")
164 (?
\e$,1Bu
\e(B consonant "LETTER TO TAO")
165 (?
\e$,1Bv
\e(B consonant "LETTER THO THUNG")
166 (?
\e$,1Bw
\e(B consonant "LETTER THO THAHAN")
167 (?
\e$,1Bx
\e(B consonant "LETTER THO THONG")
168 (?
\e$,1By
\e(B consonant "LETTER NO NU")
169 (?
\e$,1Bz
\e(B consonant "LETTER BO BAIMAI")
170 (?
\e$,1B{
\e(B consonant "LETTER PO PLA")
171 (?
\e$,1B|
\e(B consonant "LETTER PHO PHUNG")
172 (?
\e$,1B}
\e(B consonant "LETTER FO FA")
173 (?
\e$,1B~
\e(B consonant "LETTER PHO PHAN")
174 (?
\e$,1B
\7f\e(B consonant "LETTER FO FAN")
175 (?
\e$,1C
\e(B consonant "LETTER PHO SAMPHAO")
176 (?
\e$,1C!
\e(B consonant "LETTER MO MA")
177 (?
\e$,1C"
\e(B consonant "LETTER YO YAK")
178 (?
\e$,1C#
\e(B consonant "LETTER RO RUA")
179 (?
\e$,1C$
\e(B vowel-base "LETTER RU (Pali vowel letter)")
180 (?
\e$,1C%
\e(B consonant "LETTER LO LING")
181 (?
\e$,1C&
\e(B vowel-base "LETTER LU (Pali vowel letter)")
182 (?
\e$,1C'
\e(B consonant "LETTER WO WAEN")
183 (?
\e$,1C(
\e(B consonant "LETTER SO SALA")
184 (?
\e$,1C)
\e(B consonant "LETTER SO RUSI")
185 (?
\e$,1C*
\e(B consonant "LETTER SO SUA")
186 (?
\e$,1C+
\e(B consonant "LETTER HO HIP")
187 (?
\e$,1C,
\e(B consonant "LETTER LO CHULA")
188 (?
\e$,1C-
\e(B consonant "LETTER O ANG")
189 (?
\e$,1C.
\e(B consonant "LETTER HO NOK HUK")
190 (?
\e$,1C/
\e(B special "PAI YAN NOI (abbreviation)")
191 (?
\e$,1C0
\e(B vowel-base "VOWEL SIGN SARA A")
192 (?
\e$,1C1
\e(B vowel-upper "VOWEL SIGN MAI HAN-AKAT N/S-T")
193 (?
\e$,1C2
\e(B vowel-base "VOWEL SIGN SARA AA")
194 (?
\e$,1C3
\e(B vowel-base "VOWEL SIGN SARA AM")
195 (?
\e$,1C4
\e(B vowel-upper "VOWEL SIGN SARA I N/S-T")
196 (?
\e$,1C5
\e(B vowel-upper "VOWEL SIGN SARA II N/S-T")
197 (?
\e$,1C6
\e(B vowel-upper "VOWEL SIGN SARA UE N/S-T")
198 (?
\e$,1C7
\e(B vowel-upper "VOWEL SIGN SARA UEE N/S-T")
199 (?
\e$,1C8
\e(B vowel-lower "VOWEL SIGN SARA U N/S-B")
200 (?
\e$,1C9
\e(B vowel-lower "VOWEL SIGN SARA UU N/S-B")
201 (?
\e$,1C:
\e(B vowel-lower "VOWEL SIGN PHINTHU N/S-B (Pali virama)")
202 (?
\e$,1C?
\e(B special "BAHT SIGN (currency symbol)")
203 (?
\e$,1C@
\e(B vowel-base "VOWEL SIGN SARA E")
204 (?
\e$,1CA
\e(B vowel-base "VOWEL SIGN SARA AE")
205 (?
\e$,1CB
\e(B vowel-base "VOWEL SIGN SARA O")
206 (?
\e$,1CC
\e(B vowel-base "VOWEL SIGN SARA MAI MUAN")
207 (?
\e$,1CD
\e(B vowel-base "VOWEL SIGN SARA MAI MALAI")
208 (?
\e$,1CE
\e(B vowel-base "LAK KHANG YAO")
209 (?
\e$,1CF
\e(B special "MAI YAMOK (repetion)")
210 (?
\e$,1CG
\e(B vowel-upper "VOWEL SIGN MAI TAI KHU N/S-T")
211 (?
\e$,1CH
\e(B tone "TONE MAI EK N/S-T")
212 (?
\e$,1CI
\e(B tone "TONE MAI THO N/S-T")
213 (?
\e$,1CJ
\e(B tone "TONE MAI TRI N/S-T")
214 (?
\e$,1CK
\e(B tone "TONE MAI CHATTAWA N/S-T")
215 (?
\e$,1CL
\e(B tone "THANTHAKHAT N/S-T (cancellation mark)")
216 (?
\e$,1CM
\e(B tone "NIKKHAHIT N/S-T (final nasal)")
217 (?
\e$,1CN
\e(B vowel-upper "YAMAKKAN N/S-T")
218 (?
\e$,1CO
\e(B special "FONRMAN")
219 (?
\e$,1CP
\e(B special "DIGIT ZERO")
220 (?
\e$,1CQ
\e(B special "DIGIT ONE")
221 (?
\e$,1CR
\e(B special "DIGIT TWO")
222 (?
\e$,1CS
\e(B special "DIGIT THREE")
223 (?
\e$,1CT
\e(B special "DIGIT FOUR")
224 (?
\e$,1CU
\e(B special "DIGIT FIVE")
225 (?
\e$,1CV
\e(B special "DIGIT SIX")
226 (?
\e$,1CW
\e(B special "DIGIT SEVEN")
227 (?
\e$,1CX
\e(B special "DIGIT EIGHT")
228 (?
\e$,1CY
\e(B special "DIGIT NINE")
229 (?
\e$,1CZ
\e(B special "ANGKHANKHU (ellipsis)")
230 (?
\e$,1C[
\e(B special "KHOMUT (beginning of religious texts)")
234 (setq elm (car l) l (cdr l))
235 (let ((char (car elm))
237 (put-char-code-property char 'phonetic-type ptype)
238 (cond ((eq ptype 'consonant)
239 (modify-category-entry char ?c thai-category-table))
240 ((memq ptype '(vowel-upper vowel-lower))
241 (modify-category-entry char ?v thai-category-table))
243 (modify-category-entry char ?t thai-category-table)))
244 (put-char-code-property char 'name (nth 2 elm)))))
247 (defun thai-compose-region (beg end)
248 "Compose Thai characters in the region.
249 When called from a program, expects two arguments,
250 positions (integers or markers) specifying the region."
253 (narrow-to-region beg end)
254 (goto-char (point-min))
255 (with-category-table thai-category-table
256 (while (re-search-forward thai-composition-pattern nil t)
257 (compose-region (match-beginning 0) (match-end 0))))))
260 (defun thai-compose-string (string)
261 "Compose Thai characters in STRING and return the resulting string."
262 (with-category-table thai-category-table
264 (while (setq idx (string-match thai-composition-pattern string idx))
265 (compose-string string idx (match-end 0))
266 (setq idx (match-end 0)))))
270 (defun thai-compose-buffer ()
271 "Compose Thai characters in the current buffer."
273 (thai-compose-region (point-min) (point-max)))
276 (defun thai-post-read-conversion (len)
277 (thai-compose-region (point) (+ (point) len))
281 (defun thai-composition-function (from to pattern &optional string)
282 "Compose Thai text in the region FROM and TO.
283 The text matches the regular expression PATTERN.
284 Optional 4th argument STRING, if non-nil, is a string containing text
287 The return value is number of composed characters."
291 (compose-string string from to)
292 (compose-region from to))
298 ;;; thai-util.el ends here