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authorKenichi Handa2003-11-08 01:40:48 +0000
committerKenichi Handa2003-11-08 01:40:48 +0000
commit75b62c63e713dbdf16f4e41dbfafeb43e72739b0 (patch)
tree50278611b7f9fc865f77ccab2a831093653414e6 /lisp/language
parent9d94dc221941b86436028d7636c6ab78e1f523e8 (diff)
downloademacs-75b62c63e713dbdf16f4e41dbfafeb43e72739b0.tar.gz
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-rw-r--r--lisp/language/kannada.el46
-rw-r--r--lisp/language/knd-util.el540
2 files changed, 586 insertions, 0 deletions
diff --git a/lisp/language/kannada.el b/lisp/language/kannada.el
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1;;; kannada.el --- Support for Kannada -*- coding: iso-2022-7bit; no-byte-compile: t -*-
2
3;; Copyright (C) 2003 Free Software Foundation, Inc.
4
5;; Maintainer: CHOWKSEY, Kailash C. <klchxbec@m-net.arbornet.org>
6;; Keywords: multilingual, Indian, Kannada
7
8;; This file is part of GNU Emacs.
9
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)
13;; any later version.
14
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.
19
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.
24
25;;; Commentary:
26
27;; This file defines language-info of Kannada script.
28
29;;; Code:
30
31(set-language-info-alist
32 "Kannada" '((charset mule-unicode-0100-24ff indian-is13194
33 indian-2-column indian-glyph ;; comment out later
34 )
35 (coding-system mule-utf-8)
36 (coding-priority mule-utf-8)
37 (input-method . "kannada-itrans")
38 (features knd-util)
39 (documentation . "\
40Kannada language and script is supported in this language
41environment."))
42 '("Indian"))
43
44(provide 'kannada)
45
46;;; kannada.el ends here
diff --git a/lisp/language/knd-util.el b/lisp/language/knd-util.el
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1;;; knd-util.el --- Support for composing Kannada characters
2
3;; Copyright (C) 2003 Free Software Foundation, Inc.
4
5;; Maintainer: Maintainer: CHOWKSEY, Kailash C. <klchxbec@m-net.arbornet.org>
6;; Keywords: multilingual, Kannada
7
8;; This file is part of GNU Emacs.
9
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)
13;; any later version.
14
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.
19
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.
24
25;; Created: Jul. 14. 2003
26
27;;; Commentary:
28
29;; This file provides character(Unicode) to glyph(CDAC) conversion and
30;; composition of Kannada script characters.
31
32;;; Code:
33
34;;;###autoload
35
36;; Kannada Composable Pattern
37;; C .. Consonants
38;; V .. Vowel
39;; H .. Virama
40;; M .. Matra
41;; V .. Vowel
42;; (N .. Zerowidth Non Joiner)
43;; (J .. Zerowidth Joiner. )
44;; 1. vowel
45;; V(A)?
46;; 2. syllable : maximum of 5 consecutive consonants. (e.g. kartsnya)
47;; ((CH)?(CH)?(CH)?CH)?C(H|M?)?
48
49(defconst kannada-consonant
50 "[$,1>u(B-$,1?9(B]")
51
52(defconst kannada-consonant-needs-twirl
53 "[$,1>u>w(B-$,1>{>}(B-$,1>~? (B-$,1?"?$(B-$,1?+?-?0?3(B-$,1?9(B]\\($,1?M(B[$,1>u(B-$,1?9(B]\\)*[$,1?A?B?C?D>b(B]?$")
54
55(defconst kannada-composable-pattern
56 (concat
57 "\\([$,1>b(B-$,1>t?`>l(B]\\)\\|[$,1>c(B]"
58 "\\|\\("
59 "\\(?:\\(?:[$,1>u(B-$,1?9(B]$,1?M(B\\)?\\(?:[$,1>u(B-$,1?9(B]$,1?M(B\\)?\\(?:[$,1>u(B-$,1?9(B]$,1?M(B\\)?[$,1>u(B-$,1?9(B]$,1?M(B\\)?"
60 "[$,1>u(B-$,1?9(B]\\(?:$,1?M(B\\|[$,1?>(B-$,1?M?U?C(B]?\\)?"
61 "\\)")
62 "Regexp matching a composable sequence of Kannada characters.")
63
64(defun kannada-compose-region (from to)
65 (interactive "r")
66 (save-excursion
67 (save-restriction
68 (narrow-to-region from to)
69 (goto-char (point-min))
70 (while (re-search-forward kannada-composable-pattern nil t)
71 (kannada-compose-syllable-region (match-beginning 0)
72 (match-end 0))))))
73(defun kannada-compose-string (string)
74 (with-temp-buffer
75 (insert (decompose-string string))
76 (kannada-compose-region (point-min) (point-max))
77 (buffer-string)))
78
79(defun kannada-post-read-conversion (len)
80 (save-excursion
81 (save-restriction
82 (let ((buffer-modified-p (buffer-modified-p)))
83 (narrow-to-region (point) (+ (point) len))
84 (kannada-compose-region (point-min) (point-max))
85 (set-buffer-modified-p buffer-modified-p)
86 (- (point-max) (point-min))))))
87
88(defun kannada-range (from to)
89 "Make the list of the integers of range FROM to TO."
90 (let (result)
91 (while (<= from to) (setq result (cons to result) to (1- to))) result))
92
93(defun kannada-regexp-of-hashtbl-keys (hashtbl)
94 "Return a regular expression that matches all keys in hashtable HASHTBL."
95 (let ((max-specpdl-size 1000))
96 (regexp-opt
97 (sort
98 (let (dummy)
99 (maphash (function (lambda (key val) (setq dummy (cons key dummy)))) hashtbl)
100 dummy)
101 (function (lambda (x y) (> (length x) (length y))))))))
102
103(defun kannada-regexp-of-hashtbl-vals (hashtbl)
104 "Return a regular expression that matches all values in hashtable HASHTBL."
105 (let ((max-specpdl-size 1000))
106 (regexp-opt
107 (sort
108 (let (dummy)
109 (maphash (function (lambda (key val) (setq dummy (cons val dummy)))) hashtbl)
110 dummy)
111 (function (lambda (x y) (> (length x) (length y))))))))
112
113(defun kannada-composition-function (from to pattern &optional string)
114 "Compose Kannada characters in REGION, or STRING if specified.
115Assume that the REGION or STRING must fully match the composable
116PATTERN regexp."
117 (if string (kannada-compose-syllable-string string)
118 (kannada-compose-syllable-region from to))
119 (- to from))
120
121;; Register a function to compose Kannada characters.
122(mapc
123 (function (lambda (ucs)
124 (aset composition-function-table (decode-char 'ucs ucs)
125 (list (cons kannada-composable-pattern
126 'kannada-composition-function)))))
127 (kannada-range #x0c80 #x0cff))
128
129;; Notes on conversion steps.
130
131;; 1. chars to glyphs
132;;
133;; Rules will not be applied to the virama appeared at the end of the
134;; text. Also, the preceding/following "r" will be treated as special case.
135
136;; 2. glyphs reordering.
137;;
138;; The glyphs are split by virama, and each glyph groups are
139;; re-ordered in the following order.
140;;
141;; Note that `consonant-glyph' mentioned here does not contain the
142;; vertical bar (right modifier) attached at the right of the
143;; consonant.
144;;
145;; If the glyph-group contains right modifier,
146;; (1) consonant-glyphs/vowels
147;; (2) spacing
148;; (3) right modifier (may be matra)
149;; (4) top matra
150;; (5) preceding "r"
151;; (7) following "r"
152;; (8) bottom matra or virama.
153;;
154;; Otherwise,
155;; (1) consonant-glyph/vowels, with nukta sign
156;; (3) left matra
157;; (4) top matra
158;; (5) preceding "r"
159;; (7) following "r"
160;; (8) bottom matra or virama.
161;; (2) spacing
162
163;; 3. glyph to glyph
164;;
165;; For better display, some glyph display would be tuned.
166
167;; 4. Composition.
168;;
169;; left modifiers will be attached at the left.
170;; others will be attached right.
171
172;; Problem::
173;; Can we generalize this methods to other Indian scripts?
174
175(defvar knd-char-glyph
176 '(("$,1>e(B" . "$,43@(B")
177 ("$,1>f(B" . "$,43A(B")
178 ("$,1?>(B" . "$,44{(B")
179 ("$,1>g(B" . "$,43B(B")
180 ("$,1??(B" . nil)
181 ("$,1>h(B" . "$,43C(B")
182 ("$,1?@(B" . nil)
183 ("$,1>i(B" . "$,43D(B")
184 ("$,1?A(B" . "\$,44(B")
185 ("$,1>j(B" . "$,43E(B")
186 ("$,1?B(B" . "\$,45 (B")
187 ("$,1>k(B" . "$,43F4(B")
188 ("$,1?C(B" . "\$,45$(B")
189 ("$,1?`(B" . "$,43F5 (B")
190 ("$,1?D(B" . "\$,45%(B")
191 ;;("$,1>l(B" . nil) ; not implemented.
192 ;;("$,1?a(B" . nil)
193 ("$,1>n(B" . "$,43G(B")
194 ("$,1>o(B" . "$,43H(B")
195 ("$,1>p(B" . "$,43I(B")
196 ("$,1?F(B" . "\$,45&(B")
197 ("$,1?G(B" . "\$,45&4~(B")
198 ("$,1?H(B" . "\$,45&5'(B")
199 ("$,1>r(B" . "$,43J(B")
200 ("$,1?J(B" . "$,45&5 (B")
201 ("$,1>s(B" . "$,43K(B")
202 ("$,1?K(B" . "\$,45&5 4~(B")
203 ("$,1>t(B" . "$,43L(B")
204 ("$,1?L(B" . "\$,45((B")
205 ("$,1>b(B" . "$,43M(B")
206 ("$,1>c(B" . "$,43N(B")
207 ("$,1>u?M(B" . "$,43O5)(B") ("$,1>u(B" . "$,43O(B") ("$,1>u??(B" . "$,43P(B") ("$,1>u?@(B" . "$,43P4~(B")
208 ("$,1>v?M(B" . "$,43S5)(B") ("$,1>v(B" . "$,43S(B") ("$,1>v??(B" . "$,43T(B") ("$,1>v?@(B" . "$,43T4~(B") ("$,1>v?F(B" . "$,43S5&(B") ("$,1>v?G(B" . "$,43S5&4~(B") ("$,1>v?H(B" . "$,43S5&5'(B") ("$,1>v?J(B" . "$,43S5&5&5 (B") ("$,1>v?K(B" . "$,43S5&5&5 4~(B") ("$,1>v?L(B" . "$,43S5((B")
209 ("$,1>w?M(B" . "$,43V5)(B") ("$,1>w(B" . "$,43V(B") ("$,1>w??(B" . "$,43W(B") ("$,1>w?@(B" . "$,43W4~(B")
210 ("$,1>x?M(B" . "$,43Y5)(B") ("$,1>x(B" . "$,43Y(B") ("$,1>x??(B" . "$,43Z(B") ("$,1>x?@(B" . "$,43Z4~(B")
211 ("$,1>y?M(B" . "$,43\5)(B") ("$,1>y(B" . "$,43\(B")
212 ("$,1>z?M(B" . "$,43^5)(B") ("$,1>z(B" . "$,43^(B") ("$,1>z??(B" . "$,43_(B") ("$,1>z?@(B" . "$,43_4~(B")
213 ("$,1>{?M(B" . "$,43a5)(B") ("$,1>{(B" . "$,43a(B") ("$,1>{??(B" . "$,43b(B") ("$,1>{?@(B" . "$,43b4~(B")
214 ("$,1>|?M(B" . "$,43d5)(B") ("$,1>|(B" . "$,43d(B") ("$,1>|??(B" . "$,43f(B") ("$,1>|?@(B" . "$,43f4~(B") ("$,1>|?F(B" . "$,43e5&(B") ("$,1>|?G(B" . "$,43e5&4~(B") ("$,1>|?H(B" . "$,43e5&5'(B") ("$,1>|?J(B" . "$,43e5&5&5 (B") ("$,1>|?K(B" . "$,43e5&5&5 4~(B") ("$,1>|?L(B" . "$,43e5((B")
215 ("$,1>}?M(B" . "$,44a4z3h45)(B") ("$,1>}(B" . "$,44a4z3h4(B") ("$,1>}??(B" . "$,44b3h4(B") ("$,1>}?@(B" . "$,44b3h44~(B") ("$,1>}?B(B". "$,44a4z3h5 (B") ("$,1>}?J(B". "$,44a5&3h5 (B") ("$,1>}?K(B". "$,44a5&3h5 4~(B")
216 ("$,1>~?M(B" . "$,43j5)(B") ("$,1>~(B" . "$,43j(B")
217 ("$,1>?M(B" . "$,43m5)(B") ("$,1>(B" . "$,43l(B") ("$,1?#?>(B" . "$,43m4{(B") ("$,1>??(B" . "$,43n(B") ("$,1>?@(B" . "$,43n4~(B") ("$,1>?F(B" . "$,43m5&(B") ("$,1>?G(B" . "$,43m5&4~(B") ("$,1>?H(B" . "$,43m5&5'(B") ("$,1>?J(B" . "$,43m5&5&5 (B") ("$,1>?K(B" . "$,43m5&5&5 4~(B") ("$,1>?L(B" . "$,43m5((B")
218 ("$,1? ?M(B" . "$,43p5)(B") ("$,1? (B" . "$,43p(B") ("$,1? ??(B" . "$,43q(B") ("$,1? ?@(B" . "$,43q4~(B")
219 ("$,1?!?M(B" . "$,43s5)(B") ("$,1?!(B" . "$,43s(B") ("$,1?!??(B" . "$,43t(B") ("$,1?!?@(B" . "$,43t4~(B")
220 ("$,1?"?M(B" . "$,43v5)(B") ("$,1?"(B" . "$,43v(B") ("$,1?"??(B" . "$,43w(B") ("$,1?"?@(B" . "$,43w4~(B")
221 ("$,1?#?M(B" . "$,43z5)(B") ("$,1?#(B" . "$,43y(B") ("$,1?#?>(B" . "$,43z4{(B") ("$,1?#??(B" . "$,43{(B") ("$,1?#?@(B" . "$,43{4~(B") ("$,1?#?F(B" . "$,43z5&(B") ("$,1?#?G(B" . "$,43z5&4~(B") ("$,1?#?H(B" . "$,43z5&5'(B") ("$,1?#?J(B" . "$,43z5&5&5 (B") ("$,1?#?K(B" . "$,43z5&5&5 4~(B") ("$,1?#?L(B" . "$,43z5((B")
222 ("$,1?$?M(B" . "$,43}5)(B") ("$,1?$(B" . "$,43}(B") ("$,1?$??(B" . "$,43~(B") ("$,1?$?@(B" . "$,43~4~(B")
223 ("$,1?%?M(B" . "$,44B5)(B") ("$,1?%(B" . "$,44B(B") ("$,1?%??(B" . "$,44C(B") ("$,1?%?@(B" . "$,44C4~(B")
224 ("$,1?&?M(B" . "$,44E5)(B") ("$,1?&(B" . "$,44E(B") ("$,1?&??(B" . "$,44F(B") ("$,1?&?@(B" . "$,44F4~(B")
225 ("$,1?'?M(B" . "$,44H5)(B") ("$,1?'(B" . "$,44H(B") ("$,1?'??(B" . "$,44I(B") ("$,1?'?@(B" . "$,44I4~(B")
226 ("$,1?(?M(B" . "$,44K5)(B") ("$,1?((B" . "$,44K(B") ("$,1?(??(B" . "$,44L(B") ("$,1?(?@(B" . "$,44L4~(B")
227 ("$,1?*?M(B" . "$,44N5)(B") ("$,1?*(B" . "$,44N(B") ("$,1?*??(B" . "$,44O(B") ("$,1?*?@(B" . "$,44O4~(B") ("$,1?*?A(B" . "$,44N5"(B") ("$,1?*?B(B" . "$,44N5#(B") ("$,1?*?J(B" . "$,44N5&5#(B") ("$,1?*?K(B" . "$,44N5&5#4~(B")
228 ("$,1?+?M(B" . "$,44Q5)(B") ("$,1?+(B" . "$,44Q(B") ("$,1?+??(B" . "$,44R(B") ("$,1?+?@(B" . "$,44R4~(B") ("$,1?+?A(B" . "$,44Q5"(B") ("$,1?+?B(B" . "$,44Q5#(B") ("$,1?+?J(B" . "$,44Q5&5#(B") ("$,1?+?K(B" . "$,44Q5&5#4~(B")
229 ("$,1?,?M(B" . "$,44W5)(B") ("$,1?,(B" . "$,44V(B") ("$,1?,?>(B". "$,44W4{(B") ("$,1?,??(B" . "$,44X(B") ("$,1?,?@(B" . "$,44X4~(B") ("$,1?,?F(B" . "$,44W5&(B") ("$,1?,?G(B" . "$,44W5&4~(B") ("$,1?,?H(B" . "$,44W5&5'(B") ("$,1?,?J(B" . "$,44W5&5&5 (B") ("$,1?,?K(B" . "$,44W5&5&5 4~(B") ("$,1?,?L(B" . "$,44W5((B")
230 ("$,1?-?M(B" . "$,44Z5)(B") ("$,1?-(B" . "$,44Z(B") ("$,1?-??(B" . "$,44[(B") ("$,1?-?@(B" . "$,44[4~(B")
231 ("$,1?.?M(B" . "$,44h5!5)(B") ("$,1?.(B" . "$,44h4z4(B") ("$,1?.?>(B" . "$,44h4z5!4{(B") ("$,1?.??(B" . "$,44i4(B") ("$,1?.?@(B" . "$,44i44~(B") ("$,1?.?J(B". "$,44h5&5 (B") ("$,1?.?K(B". "$,44h5&5 4~(B")
232 ("$,1?/?M(B" . "$,44^4z5!5)(B") ("$,1?/(B" . "$,44^4z4(B") ("$,1?/?>(B" . "$,44^4z5!4{(B")("$,1?/??(B" . "$,44_4(B") ("$,1?/?@(B" . "$,44_44~(B") ("$,1?/?J(B" . "$,44^5&5 (B") ("$,1?/?K(B" . "$,44^5&5 4~(B")
233 ("$,1?0?M(B" . "$,44a5)(B") ("$,1?0(B" . "$,44a(B") ("$,1?0??(B" . "$,44b(B") ("$,1?0?@(B" . "$,44b4~(B")
234 ("$,1?0?M(B" . "$,44a5)(B") ("$,1?0(B" . "$,44a(B") ("$,1?0??(B" . "$,44b(B") ("$,1?0?@(B" . "$,44b4~(B")
235 ("$,1?2?M(B" . "$,44e5)(B") ("$,1?2(B" . "$,44d(B") ("$,1?2?>(B" . "$,44e4{(B") ("$,1?2??(B" . "$,44f(B") ("$,1?2?@(B" . "$,44f4~(B") ("$,1?2?F(B" . "$,44e5&(B") ("$,1?2?G(B" . "$,44e5&4~(B") ("$,1?2?H(B" . "$,44e5&5'(B") ("$,1?2?J(B" . "$,44e5&5&5 (B") ("$,1?2?K(B" . "$,44e5&5&5 4~(B") ("$,1?2?L(B" . "$,44e5((B")
236 ("$,1?5?M(B" . "$,44h5)(B") ("$,1?5(B" . "$,44h(B") ("$,1?5??(B" . "$,44i(B") ("$,1?5?@(B" . "$,44i4~(B") ("$,1?5?A(B" . "$,44h5"(B") ("$,1?5?B(B" . "$,44h5#(B") ("$,1?5?J(B" . "$,44h5&5#(B") ("$,1?5?K(B" . "$,44h5&5#4~(B")
237 ("$,1?6?M(B" . "$,44k5)(B") ("$,1?6(B" . "$,44k(B") ("$,1?6??(B" . "$,44l(B") ("$,1?6?@(B" . "$,44l4~(B")
238 ("$,1?7?M(B" . "$,44n5)(B") ("$,1?7(B" . "$,44n(B") ("$,1?7??(B" . "$,44o(B") ("$,1?7?@(B" . "$,44o4~(B")
239 ("$,1?8?M(B" . "$,44q5)(B") ("$,1?8(B" . "$,44q(B") ("$,1?8??(B" . "$,44r(B") ("$,1?8?@(B" . "$,44r4~(B")
240 ("$,1?9?M(B" . "$,44t5)(B") ("$,1?9(B" . "$,44t(B") ("$,1?9??(B" . "$,44u(B") ("$,1?9?@(B" . "$,44u4~(B")
241 ("$,1?3?M(B" . "$,44w5)(B") ("$,1?3(B" . "$,44w(B") ("$,1?3??(B" . "$,44x(B") ("$,1?3?@(B" . "$,44x4~(B"))
242"Kannada characters to glyphs conversion table.
243Default value contains only the basic rules.")
244
245(defvar knd-char-glyph-hash
246 (let* ((hash (make-hash-table :test 'equal)))
247 (mapc (function (lambda (x) (puthash (car x) (cdr x) hash)))
248 knd-char-glyph)
249 hash))
250
251(defvar knd-char-glyph-regexp
252 (kannada-regexp-of-hashtbl-keys knd-char-glyph-hash))
253
254(defvar knd-conjunct-glyph
255 '(("$,1>u(B" . "$,43Q(B") ("$,1>v(B" . "$,43U(B") ("$,1>w(B" . "$,43X(B") ("$,1>x(B" . "$,43[(B") ("$,1>y(B" . "$,43](B")
256 ("$,1>z(B" . "$,43`(B") ("$,1>{(B" . "$,43c(B") ("$,1>|(B" . "$,43g(B") ("$,1>}(B" . "$,43i(B") ("$,1>~(B" . "$,43k(B")
257 ("$,1>(B" . "$,43o(B") ("$,1? (B" . "$,43r(B") ("$,1?!(B" . "$,43u(B") ("$,1?"(B" . "$,43x(B") ("$,1?#(B" . "$,43|(B")
258 ("$,1?$(B" . "$,44A(B") ("$,1?%(B" . "$,44D(B") ("$,1?&(B" . "$,44G(B") ("$,1?'(B" . "$,44J(B") ("$,1?((B" . "$,44M(B")
259 ("$,1?*(B" . "$,44P(B") ("$,1?+(B" . "$,44U(B") ("$,1?,(B" . "$,44Y(B") ("$,1?-(B" . "$,44\(B") ("$,1?.(B" . "$,44](B")
260 ("$,1?/(B" . "$,44`(B") ("$,1?0(B" . "$,44c(B") ("$,1?2(B" . "$,44g(B") ("$,1?3(B" . "$,44y(B") ("$,1?5(B" . "$,44j(B")
261 ("$,1?6(B" . "$,44m(B") ("$,1?7(B" . "$,44p(B") ("$,1?8(B" . "$,44s(B") ("$,1?9(B" . "$,44v(B"))
262"Kannada characters to conjunct glyphs conversion table.")
263
264(defvar knd-conjunct-glyph-hash
265 (let* ((hash (make-hash-table :test 'equal)))
266 (mapc (function (lambda (x) (puthash (car x) (cdr x) hash)))
267 knd-conjunct-glyph)
268 hash))
269
270(defvar knd-conjunct-glyph-regexp
271 (kannada-regexp-of-hashtbl-vals knd-conjunct-glyph-hash))
272
273(mapc
274 (function (lambda (x)
275 (put-char-code-property (aref (cdr x) 0) 'reference-point '(5 . 3))))
276 knd-conjunct-glyph)
277
278;; glyph-to-glyph conversion table.
279;; it is supposed that glyphs are ordered in
280;; [consonant/nukta] - [matra/virama] - [preceding-r] - [anuswar].
281
282(defvar knd-glyph-glyph
283 '(("$,45$4A(B" . "$,45*(B")
284 ("$,45'4A(B" . "$,45+(B")
285 ("$,44A3g(B" . "$,45,(B")
286 ("$,45$3Q(B" . "$,45-(B")))
287
288(defvar knd-glyph-glyph-hash
289 (let* ((hash (make-hash-table :test 'equal)))
290 (mapc (function (lambda (x) (puthash (car x) (cdr x) hash)))
291 knd-glyph-glyph)
292 hash))
293(defvar knd-glyph-glyph-regexp
294 (kannada-regexp-of-hashtbl-keys knd-glyph-glyph-hash))
295
296(defun knd-charseq (from &optional to)
297 (if (null to) (setq to from))
298 (mapcar (function (lambda (x) (indian-glyph-char x 'kannada)))
299 (kannada-range from to)))
300
301(defvar knd-glyph-cv
302 (append
303 (knd-charseq #x40 #x50)
304 (knd-charseq #x52 #x54)
305 (knd-charseq #x56 #x57)
306 (knd-charseq #x59 #x5a)
307 (knd-charseq #x5c)
308 (knd-charseq #x5e #x5f)
309 (knd-charseq #x61 #x62)
310 (knd-charseq #x64 #x66)
311 (knd-charseq #x6a)
312 (knd-charseq #x6c #x6e)
313 (knd-charseq #x70 #x71)
314 (knd-charseq #x73 #x74)
315 (knd-charseq #x76 #x77)
316 (knd-charseq #x79 #x7b)
317 (knd-charseq #x7d #x7e)
318 (knd-charseq #xa2 #xa3)
319 (knd-charseq #xa5 #xa6)
320 (knd-charseq #xa8 #xa9)
321 (knd-charseq #xab #xac)
322 (knd-charseq #xae #xaf)
323 (knd-charseq #xb1 #xb2)
324 (knd-charseq #xb6 #xb8)
325 (knd-charseq #xb6 #xb8)
326 (knd-charseq #xba #xbb)
327 (knd-charseq #xbe #xbf)
328 (knd-charseq #xc1 #xc2)
329 (knd-charseq #xc4 #xc6)
330 (knd-charseq #xc8 #xc9)
331 (knd-charseq #xcb #xcc)
332 (knd-charseq #xce #xcf)
333 (knd-charseq #xd1 #xd2)
334 (knd-charseq #xd4 #xd5)
335 (knd-charseq #xd7 #xd8)
336 (knd-charseq #xc3))
337 "Kannada Consonants/Vowels/Nukta Glyphs")
338
339(defvar knd-glyph-space
340 (knd-charseq #xb3 #xb4)
341 "Kannada Spacing Glyphs")
342
343(defvar knd-glyph-right-modifier
344 (append
345 (knd-charseq #xdb #xdd)
346 (knd-charseq #xdf)
347 (knd-charseq #xe0 #xe3)
348 (knd-charseq #xe9))
349 "Kannada Modifiers attached at the right side.")
350
351(defvar knd-glyph-right-modifier-regexp
352 (concat "[" knd-glyph-right-modifier "]"))
353
354(defvar knd-glyph-jha-tail
355 (knd-charseq #x68)
356 "Kannada tail for jha.")
357
358(defvar knd-glyph-top-matra
359 (append
360 (knd-charseq #xda)
361 (knd-charseq #xdd)
362 (knd-charseq #xe6)
363 (knd-charseq #xe8))
364 "Kannada Matras attached at the top side.")
365
366(defvar knd-glyph-bottom-matra
367 (append
368 (knd-charseq #xe4 #xe5)
369 (knd-charseq #xe7))
370 "Kannada Matras attached at the bottom.")
371
372(defvar knd-glyph-end-marks
373 (append
374 (knd-charseq #x25)
375 (knd-charseq #x4d #x4e)
376 (knd-charseq #xde))
377 "Kannada end marks: arkavattu, virama, au and diirghaa.")
378
379(defvar knd-glyph-bottom-modifier
380 (append
381 (knd-charseq #x51)
382 (knd-charseq #x55)
383 (knd-charseq #x58)
384 (knd-charseq #x5b)
385 (knd-charseq #x5d)
386 (knd-charseq #x60)
387 (knd-charseq #x63)
388 (knd-charseq #x67)
389 (knd-charseq #x69)
390 (knd-charseq #x6b)
391 (knd-charseq #x6f)
392 (knd-charseq #x72)
393 (knd-charseq #x75)
394 (knd-charseq #x78)
395 (knd-charseq #x7c)
396 (knd-charseq #xa1)
397 (knd-charseq #xa4)
398 (knd-charseq #xa7)
399 (knd-charseq #xaa)
400 (knd-charseq #xad)
401 (knd-charseq #xb0)
402 (knd-charseq #xb5)
403 (knd-charseq #xb9)
404 (knd-charseq #xbc #xbd)
405 (knd-charseq #xc0)
406 (knd-charseq #xc3)
407 (knd-charseq #xc7)
408 (knd-charseq #xca)
409 (knd-charseq #xcd)
410 (knd-charseq #xd0)
411 (knd-charseq #xd3)
412 (knd-charseq #xd6)
413 (knd-charseq #xd9)
414 (knd-charseq #xea #xef))
415 "Kannada Modifiers attached at the bottom.")
416
417(defvar knd-glyph-order
418 `((,knd-glyph-cv . 1)
419 (,knd-glyph-top-matra . 2)
420 (,knd-glyph-jha-tail . 3)
421 (,knd-glyph-right-modifier . 4)
422 (,knd-glyph-space . 5)
423 (,knd-glyph-bottom-modifier . 5)
424 (,knd-glyph-bottom-matra . 6)
425 (,knd-glyph-end-marks . 7)
426 ))
427
428(mapc
429 (function (lambda (x)
430 (mapc
431 (function (lambda (y)
432 (put-char-code-property y 'composition-order (cdr x))))
433 (car x))))
434 knd-glyph-order)
435
436(defun kannada-compose-syllable-string (string)
437 (with-temp-buffer
438 (insert (decompose-string string))
439 (kannada-compose-syllable-region (point-min) (point-max))
440 (buffer-string)))
441
442;; kch
443(defun kannada-compose-syllable-region (from to)
444 "Compose kannada syllable in region FROM to TO."
445 (let ((glyph-str nil) (cons-num 0) (glyph-str-list nil)
446 (last-virama nil) (preceding-r nil) (last-modifier nil)
447 (last-char (char-before to)) match-str pos
448 glyph-block split-pos (conj nil) (rest nil))
449 (save-excursion
450 (save-restriction
451 ;;; *** char-to-glyph conversion ***
452 ;; Special rule 1. -- Last virama must be preserved.
453 (if (eq last-char ?$,1?M(B)
454 (progn
455 (setq last-virama t)
456 (narrow-to-region from (1- to)))
457 (narrow-to-region from to))
458 (goto-char (point-min))
459 ;; Special rule 2. -- preceding "r virama" must be modifier.
460 (when (looking-at "$,1?0?M(B.")
461 (setq preceding-r t)
462 (goto-char (+ 2 (point))))
463 ;; remove conjunct consonants
464 (while (re-search-forward knd-char-glyph-regexp nil t)
465 (setq match-str (match-string 0))
466 (if (and (string-match kannada-consonant match-str)
467 (> cons-num 0))
468 (progn
469 (setq conj (concat conj (gethash (match-string 0 match-str)
470 knd-conjunct-glyph-hash)))
471 (setq match-str (replace-match "" t nil match-str))
472 (if (string-match "$,1?M(B" rest)
473 (setq rest (replace-match "" t nil rest)))))
474 (setq rest (concat rest match-str))
475 ;; count the number of consonant-glyhs.
476 (if (string-match kannada-consonant match-str)
477 (setq cons-num (1+ cons-num))))
478 ;; translate the rest characters into glyphs
479 (setq pos 0)
480 (while (string-match knd-char-glyph-regexp rest pos)
481 (setq match-str (match-string 0 rest))
482 (setq pos (match-end 0))
483 (setq glyph-str
484 (concat glyph-str (gethash match-str knd-char-glyph-hash))))
485
486 (if conj (setq glyph-str (concat glyph-str conj)))
487 (if last-virama (setq glyph-str (concat glyph-str "$,45)(B"))
488 (goto-char (point-min))
489 (if (re-search-forward kannada-consonant-needs-twirl nil t)
490 (progn
491 (setq match-str (match-string 0))
492 (setq glyph-str (concat glyph-str "$,44z(B")))))
493 ;; preceding-r must be attached
494 (if preceding-r
495 (setq glyph-str (concat glyph-str "$,43%(B")))
496 ;;; *** glyph-to-glyph conversion ***
497 (when (string-match knd-glyph-glyph-regexp glyph-str)
498 (setq glyph-str
499 (replace-match (gethash (match-string 0 glyph-str)
500 knd-glyph-glyph-hash)
501 nil t glyph-str)))
502 ;;; *** glyph reordering ***
503 (while (setq split-pos (string-match "$,45)(B\\|.$" glyph-str))
504 (setq glyph-block (substring glyph-str 0 (1+ split-pos)))
505 (setq glyph-str (substring glyph-str (1+ split-pos)))
506 (setq
507 glyph-block
508 (sort (string-to-list glyph-block)
509 (function (lambda (x y)
510 (< (get-char-code-property x 'composition-order)
511 (get-char-code-property y 'composition-order))))))
512 (setq glyph-str-list (nconc glyph-str-list glyph-block)))
513 ;;; *** insert space glyphs for kerning ***
514 (if (> cons-num 0)
515 (let ((curr glyph-str-list) (prev nil) (last-bott nil) bott co)
516 (while curr
517 (setq co (get-char-code-property
518 (car curr) 'composition-order)
519 bott (or (eq co 5) (eq co 6)))
520 (if (and bott last-bott)
521 (setcdr prev (cons ?$,44T(B curr)))
522 (setq last-bott bott prev curr curr (cdr curr)))))
523 ;; concatenate and attach reference-points.
524 (setq glyph-str
525 (cdr
526 (apply
527 'nconc
528 (mapcar
529 (function (lambda (x)
530 (list
531 (or (get-char-code-property x 'reference-point)
532 '(5 . 3) ;; default reference point.
533 )
534 x)))
535 glyph-str-list))))))
536 (compose-region from to glyph-str)))
537
538(provide 'knd-util)
539
540;;; knd-util.el ends here