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 ;; National Institute of Advanced Industrial Science and Technology (AIST)
7 ;; Registration Number H13PRO009
9 ;; Keywords: mule, multilingual, Thai, i18n
11 ;; This file is part of GNU Emacs.
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)
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.
23 ;; You should have received a copy of the GNU General Public License
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.
32 ;; Setting information of Thai characters.
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
)
39 ;; The general composing rules are as follows:
43 ;; CV -> C, CT -> C, CVT -> C, Cv -> C, CvT -> C
46 ;; where C: consonant, V: vowel upper, v: vowel lower, T: tone mark.
48 (defvar thai-composition-pattern
"\\cc\\(\\ct\\|\\cv\\ct?\\)"
49 "Regular expression matching a Thai composite sequence.")
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
148 (setq elm (car l) l (cdr l))
149 (let ((char (car 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))
157 (modify-category-entry char ?t thai-category-table)))
158 (put-char-code-property char 'name (nth 2 elm)))))
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.
"
167 (narrow-to-region beg end)
168 (goto-char (point-min))
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))))))
174 (defun thai-compose-string (string)
175 "Compose Thai characters in STRING and return the resulting string.
"
176 (with-category-table thai-category-table
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)))))
184 (defun thai-compose-buffer ()
185 "Compose Thai characters in the current buffer.
"
187 (thai-compose-region (point-min) (point-max)))
190 (defun thai-composition-function (pos &optional string)
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]?
"))
195 (eq (string-match pattern string pos) pos))
197 (compose-string string pos (match-end 0))))
198 (if (>= pos (point-min))
201 (if (looking-at pattern)
203 (compose-region pos (match-end 0)))))))))
208 ;;; thai-util.el ends here