1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
|
;;; indian.el --- Indian languages support -*- coding: utf-8; -*-
;; Copyright (C) 1997, 1999, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
;; Free Software Foundation, Inc.
;; Copyright (C) 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
;; National Institute of Advanced Industrial Science and Technology (AIST)
;; Registration Number H14PRO021
;; Maintainer: Kenichi Handa <handa@m17n.org>
;; KAWABATA, Taichi <kawabata@m17n.org>
;; Keywords: multilingual, i18n, Indian
;; This file is part of GNU Emacs.
;; GNU Emacs 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 3 of the License, or
;; (at your option) any later version.
;; GNU Emacs 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 GNU Emacs. If not, see <http://www.gnu.org/licenses/>.
;;; Commentary:
;; This file contains definitions of Indian language environments, and
;; setups for displaying the scrtipts used there.
;;; Code:
(define-coding-system 'in-is13194-devanagari
"8-bit encoding for ASCII (MSB=0) and IS13194-Devanagari (MSB=1)."
:coding-type 'iso-2022
:mnemonic ?D
:designation [ascii indian-is13194 nil nil]
:charset-list '(ascii indian-is13194)
:post-read-conversion 'in-is13194-post-read-conversion
:pre-write-conversion 'in-is13194-pre-write-conversion)
(define-coding-system-alias 'devanagari 'in-is13194-devanagari)
(set-language-info-alist
"Devanagari" '((charset unicode)
(coding-system utf-8)
(coding-priority utf-8)
(input-method . "dev-aiba")
(documentation . "\
Such languages using Devanagari script as Hindi and Marathi
are supported in this language environment."))
'("Indian"))
(set-language-info-alist
"Bengali" '((charset unicode)
(coding-system utf-8)
(coding-priority utf-8)
(input-method . "bengali-itrans")
(documentation . "\
Such languages using Bengali script as Bengali and Assamese
are supported in this language environment."))
'("Indian"))
(set-language-info-alist
"Punjabi" '((charset unicode)
(coding-system utf-8)
(coding-priority utf-8)
(input-method . "punjabi-itrans")
(documentation . "\
North Indian language Punjabi is supported in this language environment."))
'("Indian"))
(set-language-info-alist
"Gujarati" '((charset unicode)
(coding-system utf-8)
(coding-priority utf-8)
(input-method . "gujarati-itrans")
(documentation . "\
North Indian language Gujarati is supported in this language environment."))
'("Indian"))
(set-language-info-alist
"Oriya" '((charset unicode)
(coding-system utf-8)
(coding-priority utf-8)
(input-method . "oriya-itrans")
(documentation . "\
Such languages using Oriya script as Oriya, Khonti, and Santali
are supported in this language environment."))
'("Indian"))
(set-language-info-alist
"Tamil" '((charset unicode)
(coding-system utf-8)
(coding-priority utf-8)
(input-method . "tamil-itrans")
(documentation . "\
South Indian Language Tamil is supported in this language environment."))
'("Indian"))
(set-language-info-alist
"Telugu" '((charset unicode)
(coding-system utf-8)
(coding-priority utf-8)
(input-method . "telugu-itrans")
(documentation . "\
South Indian Language Telugu is supported in this language environment."))
'("Indian"))
(set-language-info-alist
"Kannada" '((charset unicode)
(coding-system mule-utf-8)
(coding-priority mule-utf-8)
(input-method . "kannada-itrans")
(sample-text . "Kannada (ಕನ್ನಡ) ನಮಸ್ಕಾರ")
(documentation . "\
Kannada language and script is supported in this language
environment."))
'("Indian"))
(set-language-info-alist
"Malayalam" '((charset unicode)
(coding-system utf-8)
(coding-priority utf-8)
(input-method . "malayalam-itrans")
(documentation . "\
South Indian language Malayalam is supported in this language environment."))
'("Indian"))
;; Replace mnemonic characters in REGEXP according to TABLE. TABLE is
;; an alist of (MNEMONIC-STRING . REPLACEMENT-STRING).
(defun indian-compose-regexp (regexp table)
(let ((case-fold-search nil))
(dolist (elt table)
(setq regexp (replace-regexp-in-string (car elt) (cdr elt) regexp t t)))
regexp))
(defconst devanagari-composable-pattern
(let ((table
'(("V" . "[\u0904-\u0914\u0960-\u0961\u0972]") ; independent vowel
("C" . "[\u0915-\u0939]") ; consonant
("R" . "\u0930") ; RA
("n" . "\u093C") ; NUKTA
("H" . "\u094D") ; HALANT
("m" . "\u093F") ; vowel sign (pre)
("u" . "[\u0945-\u0948\u0955]") ; vowel sign (above)
("b" . "[\u0941-\u0944\u0962-\u0963]") ; vowel sign (below)
("p" . "[\u093E\u0940\u0949-\u094C]") ; vowel sign (post)
("A" . "[\u0900-\u0902\u0953-\u0954]") ; vowel modifier (above)
("a" . "\u0903") ; vowel modifier (post)
("S" . "\u0951") ; stress sign (above)
("s" . "\u0952") ; stress sign (below)
("N" . "\u200C") ; ZWNJ
("J" . "\u200D") ; ZWJ
("X" . "[\u0900-\u097F]")))) ; all coverage
(indian-compose-regexp
(concat
;; syllables with an independent vowel, or
"\\(?:RH\\)?Vn?m?b?u?p?n?A?s?S?a?\\|"
;; consonant-based syllables, or
"\\(?:Cn?J?HJ?\\)*Cn?\\(?:H[NJ]?\\|m?b?u?p?n?A?s?S?a?\\)\\|"
;; special consonant form, or
"JHR\\|"
;; any other singleton characters
"X")
table))
"Regexp matching a composable sequence of Devanagari characters.")
(defconst tamil-composable-pattern
(concat
"\\([அ-ஔ]\\)\\|"
"[ஂஃ]\\|" ;; vowel modifier considered independent
"\\(\\(?:\\(?:க்ஷ\\)\\|[க-ஹ]\\)[்ா-ௌ]?\\)\\|"
"\\(ஷ்ரீ\\)")
"Regexp matching a composable sequence of Tamil characters.")
(defconst kannada-composable-pattern
(concat
"\\([ಂ-ಔೠಌ]\\)\\|[ಃ]"
"\\|\\("
"\\(?:\\(?:[ಕ-ಹ]್\\)?\\(?:[ಕ-ಹ]್\\)?\\(?:[ಕ-ಹ]್\\)?[ಕ-ಹ]್\\)?"
"[ಕ-ಹ]\\(?:್\\|[ಾ-್ೕೃ]?\\)?"
"\\)")
"Regexp matching a composable sequence of Kannada characters.")
(defconst malayalam-composable-pattern
(let ((table
'(("V" . "[\u0D05-\u0D14\u0D60-\u0D61]") ; independent vowel
("C" . "[\u0D15-\u0D39]") ; consonant
("m" . "[\u0D46-\u0D48\u0D4A-\u0D4C]") ; prebase matra
("p" . "[\u0D3E-\u0D44\u0D57]") ; postbase matra
("b" . "[\u0D62-\u0D63]") ; belowbase matra
("a" . "[\u0D02-\u0D03]") ; abovebase sign
("H" . "\u0D4D") ; virama sign
("N" . "\u200C") ; ZWNJ
("J" . "\u200D") ; ZWJ
("X" . "[\u0D00-\u0D7F]")))) ; all coverage
(indian-compose-regexp
(concat
;; syllables with an independent vowel, or
"V\\(?:J?HC\\)?m?b?p?a?\\|"
;; consonant-based syllables, or
"\\(?:CJ?HJ?\\)\\{0,4\\}C\\(?:H[NJ]?\\|m?b?p?a?\\)\\|"
;; special consonant form, or
"JHC\\|"
;; any other singleton characters
"X")
table))
"Regexp matching a composable sequence of Malayalam characters.")
(let ((script-regexp-alist
`((devanagari . ,devanagari-composable-pattern)
(bengali . "[\x980-\x9FF\x200C\x200D]+")
(gurmukhi . "[\xA00-\xA7F\x200C\x200D]+")
(gujarati . "[\xA80-\xAFF\x200C\x200D]+")
(oriya . "[\xB00-\xB7F\x200C\x200D]+")
(tamil . "[\xB80-\xBFF\x200C\x200D]+")
(telugu . "[\xC00-\xC7F\x200C\x200D]+")
(kannada . "[\xC80-\xCFF\x200C\x200D]+")
(malayalam . ,malayalam-composable-pattern))))
(map-char-table
#'(lambda (key val)
(let ((slot (assq val script-regexp-alist)))
(if slot
(set-char-table-range
composition-function-table key
(list (vector (cdr slot) 0 'font-shape-gstring))))))
char-script-table))
(provide 'indian)
;; arch-tag: 83aa8fc7-7ee2-4364-a6e5-498f5e3b8c2f
;;; indian.el ends here
|
