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[bpt/emacs.git] / lisp / language / devan-util.el
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897755c4 1;;; devan-util.el --- Support for composing Devanagari characters -*-coding: iso-2022-7bit;-*-
4ed46869 2
1bec6fdb 3;; Copyright (C) 2001 Free Software Foundation, Inc.
4ed46869 4
1bec6fdb
RS		 5;; Maintainer: KAWABATA, Taichi <batta@beige.ocn.ne.jp>
6;; Keywords: multilingual, Devanagari
4ed46869
KH		 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
e803d6bd
KH		 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.
4ed46869 24
1bec6fdb 25;; Created: Feb. 17. 2001
37cdc7ad 26
1bec6fdb 27;;; Commentary:
4ed46869 28
1bec6fdb
RS		 29;; This file provides character(Unicode) to glyph(CDAC) conversion and
30;; composition of Devanagari script characters.
4ed46869
KH		 31
32;;; Code:
33
1d475b5e 34;;;###autoload
4ed46869 35
1bec6fdb
RS		 36;; Devanagari Composable Pattern
37;; C .. Consonants
38;; V .. Vowel
39;; H .. Halant
40;; M .. Matra
41;; V .. Vowel
42;; A .. Anuswar
43;; D .. Chandrabindu
44;; (N .. Zerowidth Non Joiner)
45;; (J .. Zerowidth Joiner. )
46;; 1. vowel
47;; V(A/D)?
48;; 2. syllable : maximum of 5 consecutive consonants. (e.g. kartsnya)
9e35da28 49;; ((CH)?(CH)?(CH)?CH)?C(H|M?(A|D)?)?
1bec6fdb
RS		 50
51(defconst devanagari-consonant
52 "[\e$,15U\e(B-\e$,15y68\e(B-\e$,16?\e(B]")
53
54(defconst devanagari-composable-pattern
0b520940 55 (concat
1bec6fdb
RS		 56 "\\([\e$,15E\e(B-\e$,15T6@6A\e(B][\e$,15A5B\e(B]?\\)\\|\e$,15C\e(B"
57 "\\|\\("
58 "\\(?:\\(?:[\e$,15U\e(B-\e$,15y68\e(B-\e$,16?\e(B]\e$,16-\e(B\\)?\\(?:[\e$,15U\e(B-\e$,15y68\e(B-\e$,16?\e(B]\e$,16-\e(B\\)?\\(?:[\e$,15U\e(B-\e$,15y68\e(B-\e$,16?\e(B]\e$,16-\e(B\\)?[\e$,15U\e(B-\e$,15y68\e(B-\e$,16?\e(B]\e$,16-\e(B\\)?"
59 "[\e$,15U\e(B-\e$,15y68\e(B-\e$,16?\e(B]\\(?:\e$,16-\e(B\\|[\e$,15~\e(B-\e$,16-6B6C\e(B]?[\e$,15B5A\e(B]?\\)?"
60 "\\)")
61 "Regexp matching a composable sequence of Devanagari characters.")
62
63(defun devanagari-compose-region (from to)
4ed46869 64 (interactive "r")
31ce7719 65 (save-excursion
1bec6fdb
RS		 66 (save-restriction
67 (narrow-to-region from to)
68 (goto-char (point-min))
69 (while (re-search-forward devanagari-composable-pattern nil t)
0b520940
DL		 70 (devanagari-compose-syllable-region (match-beginning 0)
71 (match-end 0))))))
1bec6fdb
RS		 72(defun devanagari-compose-string (string)
73 (with-temp-buffer
74 (insert (decompose-string string))
75 (devanagari-compose-region (point-min) (point-max))
76 (buffer-string)))
77
91c78c93
DL		 78(defun devanagari-post-read-conversion (len)
79 (save-excursion
80 (save-restriction
81 (let ((buffer-modified-p (buffer-modified-p)))
82 (narrow-to-region (point) (+ (point) len))
83 (devanagari-compose-region (point-min) (point-max))
84 (set-buffer-modified-p buffer-modified-p)
85 (- (point-max) (point-min))))))
86
4f102de2 87(defun devanagari-range (from to)
1bec6fdb 88 "Make the list of the integers of range FROM to TO."
0b520940 89 (let (result)
1bec6fdb
RS		 90 (while (<= from to) (setq result (cons to result) to (1- to))) result))
91
4f102de2
RS		 92(defun devanagari-regexp-of-hashtbl-keys (hashtbl)
93 "Return a regular expression that matches all keys in hashtable HASHTBL."
1bec6fdb
RS		 94 (let ((max-specpdl-size 1000))
95 (regexp-opt
0b520940 96 (sort
1bec6fdb
RS		 97 (let (dummy)
98 (maphash (function (lambda (key val) (setq dummy (cons key dummy)))) hashtbl)
99 dummy)
100 (function (lambda (x y) (> (length x) (length y))))))))
101
102(defun devanagari-composition-function (from to pattern &optional string)
103 "Compose Devanagari characters in REGION, or STRING if specified.
104Assume that the REGION or STRING must fully match the composable
105PATTERN regexp."
106 (if string (devanagari-compose-syllable-string string)
107 (devanagari-compose-syllable-region from to))
108 (- to from))
109
110;; Register a function to compose Devanagari characters.
111(mapc
112 (function (lambda (ucs)
ca17cd52 113 (aset composition-function-table ucs
0b520940
DL		 114 (list (cons devanagari-composable-pattern
115 'devanagari-composition-function)))))
4f102de2 116 (nconc '(#x0903) (devanagari-range #x0905 #x0939) (devanagari-range #x0958 #x0961)))
1bec6fdb
RS		 117
118;; Notes on conversion steps.
119
0b520940 120;; 1. chars to glyphs
1bec6fdb
RS		 121;;
122;; Rules will not be applied to the halant appeared at the end of the
123;; text. Also, the preceding/following "r" will be treated as special case.
124
125;; 2. glyphs reordering.
126;;
127;; The glyphs are split by halant, and each glyph groups are
128;; re-ordered in the following order.
129;;
130;; Note that `consonant-glyph' mentioned here does not contain the
131;; vertical bar (right modifier) attached at the right of the
132;; consonant.
0b520940
DL		 133;;
134;; If the glyph-group contains right modifier,
1bec6fdb
RS		 135;; (1) consonant-glyphs/vowels, with nukta sign
136;; (2) spacing
137;; (3) right modifier (may be matra)
138;; (4) top matra
139;; (5) preceding "r"
140;; (6) anuswar
141;; (7) following "r"
142;; (8) bottom matra or halant.
0b520940
DL		 143;;
144;; Otherwise,
1bec6fdb
RS		 145;; (1) consonant-glyph/vowels, with nukta sign
146;; (3) left matra
0b520940 147;; (4) top matra
1bec6fdb
RS		 148;; (5) preceding "r"
149;; (6) anuswar
150;; (7) following "r"
151;; (8) bottom matra or halant.
152;; (2) spacing
153
154;; 3. glyph to glyph
155;;
156;; For better display, some glyph display would be tuned.
157
158;; 4. Composition.
159;;
160;; left modifiers will be attached at the left.
161;; others will be attached right.
162
163;; Problem::
164;; Can we generalize this methods to other Indian scripts?
165
77539682
KH		 166(defvar dev-char-glyph
167 '(("\e$,15E\e(B" . "\e$,4 K\e(B")
1d475b5e
KH		 168 ("\e$,15F\e(B" . "\e$,4 K")\e(B")
169 ("\e$,15~\e(B" . "\e$,4")\e(B")
77539682 170 ("\e$,15G\e(B" . "\e$,4 \\e(B")
1d475b5e
KH		 171 ("\e$,15\7f\e(B" . "\e$,4"*\e(B")
172 ("\e$,15\7f5A\e(B" . "\e$,4"*\e(B\\e$,4"&\e(B")
77539682 173 ("\e$,15H\e(B" . "\e$,4 \"'\e(B")
1d475b5e
KH		 174 ("\e$,15H5A\e(B" . "\e$,4 \"'"&\e(B")
175 ("\e$,16 \e(B" . "\e$,4"2\e(B")
176 ("\e$,16 5A\e(B" . "\e$,4"2"&\e(B")
77539682 177 ("\e$,15I\e(B" . "\e$,4 ]\e(B")
1d475b5e
KH		 178 ("\e$,16!\e(B" . "\e$,4"6\e(B")
179 ("\e$,15J\e(B" . "\e$,4 ^"P\e(B")
180 ("\e$,16"\e(B" . "\e$,4":\e(B")
181 ("\e$,15K\e(B" . "\e$,4 `"Q\e(B")
182 ("\e$,16#\e(B" . "\e$,4">\e(B")
77539682 183 ;;("\e$,15L\e(B" . nil) ; not implemented.
1d475b5e
KH		 184 ("\e$,16$\e(B" . "\e$,4"?\e(B")
185 ("\e$,15M\e(B" . "\e$,4 b"L\e(B")
186 ("\e$,15M5A\e(B" . "\e$,4 b"$\e(B")
187 ("\e$,15M5B\e(B" . "\e$,4 b"$\e(B")
188 ("\e$,16%\e(B" . "\\e$,4"L\e(B")
0b520940
DL		 189 ("\e$,15N\e(B" . "\e$,4 b"@\e(B")
190 ("\e$,15N5A\e(B" . "\e$,4 b"@"&\e(B")
1d475b5e
KH		 191 ("\e$,16&\e(B" . "\\e$,4"@\e(B")
192 ("\e$,16&5A\e(B" . "\\e$,4"@\e(B\\e$,4"&\e(B")
0b520940 193 ("\e$,15O\e(B" . "\e$,4 b\e(B")
1d475b5e
KH		 194 ("\e$,16'\e(B" . "\\e$,4"D\e(B")
195 ("\e$,16'5A\e(B" . "\\e$,4"D\e(B\\e$,4"&\e(B")
0b520940
DL		 196 ("\e$,15P\e(B" . "\e$,4 b"D\e(B")
197 ("\e$,15P5A\e(B" . "\e$,4 b"D"&\e(B")
1d475b5e
KH		 198 ("\e$,16(\e(B" . "\\e$,4"H\e(B")
199 ("\e$,16(5A\e(B" . "\\e$,4"H\e(B\\e$,4"&\e(B")
200 ("\e$,15Q\e(B" . "\e$,4 K")"L\e(B") ;; special rule for reodering.
201 ("\e$,15Q5A\e(B" . "\e$,4 K")"$\e(B")
202 ("\e$,15Q5B\e(B" . "\e$,4 K")"$\e(B")
203 ("\e$,16)\e(B" . "\\e$,4")"L\e(B")
204 ("\e$,16)5A\e(B" . "\\e$,4")"$\e(B")
205 ("\e$,16)5B\e(B" . "\\e$,4")"$\e(B")
0b520940
DL		 206 ("\e$,15R\e(B" . "\e$,4 K")"@\e(B")
207 ("\e$,15R5A\e(B" . "\e$,4 K")"@"&\e(B")
1d475b5e
KH		 208 ("\e$,16*\e(B" . "\\e$,4")"@\e(B")
209 ("\e$,16*5A\e(B" . "\\e$,4")"@"&\e(B")
210 ("\e$,15S\e(B" . "\e$,4 K")"D\e(B")
211 ("\e$,15S5A\e(B" . "\e$,4 K")"D"&\e(B")
212 ("\e$,16+\e(B" . "\\e$,4")"D\e(B")
213 ("\e$,16+5A\e(B" . "\\e$,4")"D"&\e(B")
0b520940
DL		 214 ("\e$,15T\e(B" . "\e$,4 K")"H\e(B")
215 ("\e$,15T5A\e(B" . "\e$,4 K")"H"&\e(B")
1d475b5e
KH		 216 ("\e$,16,\e(B" . "\\e$,4")"H\e(B")
217 ("\e$,16,5A\e(B" . "\\e$,4")"H"&\e(B")
0b520940 218 ("\e$,16@\e(B" . "\e$,4 a"Q\e(B")
77539682 219 ;;("\e$,16B\e(B" . nil)
0b520940 220 ;;("\e$,16A\e(B" . nil)
77539682
KH		 221 ;;("\e$,16C\e(B" . nil)
222
223 ;; GRUTTALS
1d475b5e 224 ("\e$,15U\e(B" . "\e$,4 e"R\e(B")
77539682 225 ("\e$,15U6-\e(B" . "\e$,4 c\e(B")
1d475b5e
KH		 226 ("\e$,15U6-5p\e(B" . "\e$,4 g"R\e(B")
227 ("\e$,15U6-5d\e(B" . "\e$,4 h"R\e(B")
228 ("\e$,15U6-5w\e(B" . "\e$,4 i")\e(B")
77539682
KH		 229 ("\e$,15U6-5w6-\e(B" . "\e$,4 i\e(B")
230
1d475b5e 231 ("\e$,15V\e(B" . "\e$,4 j")\e(B")
77539682 232 ("\e$,15V6-\e(B" . "\e$,4 j\e(B")
1d475b5e 233 ("\e$,15V6-5p\e(B" . "\e$,4 l")\e(B")
77539682
KH		 234 ("\e$,15V6-5p6-\e(B" . "\e$,4 l\e(B")
235
0b520940
DL		 236 ("\e$,15W\e(B" . "\e$,4 m")\e(B")
237 ("\e$,15W6-\e(B" . "\e$,4 m\e(B")
1d475b5e 238 ("\e$,15W6-5p\e(B" . "\e$,4 o")\e(B")
77539682
KH		 239 ("\e$,15W6-5p6-\e(B" . "\e$,4 o\e(B")
240
0b520940
DL		 241 ("\e$,15X\e(B" . "\e$,4 p")\e(B")
242 ("\e$,15X6-\e(B" . "\e$,4 p\e(B")
243 ("\e$,15X6-5p\e(B" . "\e$,4 q")\e(B")
244 ("\e$,15X6-5p6-\e(B" . "\e$,4 q\e(B")
77539682 245
1d475b5e 246 ("\e$,15Y\e(B" . "\e$,4 r"S\e(B")
0b520940
DL		 247 ;; PALATALS
248 ("\e$,15Z\e(B" . "\e$,4 s")\e(B")
249 ("\e$,15Z6-\e(B" . "\e$,4 s\e(B")
250 ("\e$,15Z6-5p\e(B" . "\e$,4 t")\e(B")
77539682
KH		 251 ("\e$,15Z6-5p6-\e(B" . "\e$,4 t\e(B")
252
0b520940 253 ("\e$,15[\e(B" . "\e$,4 u"T\e(B")
77539682 254
0b520940
DL		 255 ("\e$,15\\e(B" . "\e$,4 v")\e(B")
256 ("\e$,15\6-\e(B" . "\e$,4 v\e(B")
257 ("\e$,15\6-5p\e(B" . "\e$,4 x")\e(B")
258 ("\e$,15\6-5p6-\e(B" . "\e$,4 x\e(B")
259 ("\e$,15\6-5^\e(B" . "\e$,4 y")\e(B")
260 ("\e$,15\6-5^6-\e(B" . "\e$,4 y\e(B")
77539682 261
0b520940
DL		 262 ("\e$,15]\e(B" . "\e$,4 z")\e(B")
263 ("\e$,15]6-\e(B" . "\e$,4 z\e(B")
264 ("\e$,15]6-5p\e(B" . "\e$,4 {")\e(B")
265 ("\e$,15]6-5p6-\e(B" . "\e$,4 {\e(B")
77539682 266
1d475b5e 267 ("\e$,15^\e(B" . "\e$,4 |")\e(B")
77539682 268 ("\e$,15^6-\e(B" . "\e$,4 |\e(B")
0b520940 269 ;; CEREBRALS
1d475b5e
KH		 270 ("\e$,15_\e(B" . "\e$,4 }"U\e(B")
271 ("\e$,15_6-5_\e(B" . "\e$,4 ~"U\e(B")
272 ("\e$,15_6-5`\e(B" . "\e$,4 \7f"U\e(B")
77539682 273
0b520940
DL		 274 ("\e$,15`\e(B" . "\e$,4! "V\e(B")
275 ("\e$,15`6-5`\e(B" . "\e$,4!!"V\e(B")
77539682 276
0b520940
DL		 277 ("\e$,15a\e(B" . "\e$,4!""W\e(B")
278 ("\e$,15a6-5a\e(B" . "\e$,4!$"W\e(B")
279 ("\e$,15a6-5b\e(B" . "\e$,4!%"W\e(B")
77539682 280
0b520940 281 ("\e$,15b\e(B" . "\e$,4!&"X\e(B")
77539682 282
1d475b5e 283 ("\e$,15c\e(B" . "\e$,4!(")\e(B")
77539682 284 ("\e$,15c6-\e(B" . "\e$,4!(\e(B")
0b520940
DL		 285 ;; DENTALS
286 ("\e$,15d\e(B" . "\e$,4!)")\e(B")
287 ("\e$,15d6-\e(B" . "\e$,4!)\e(B")
288 ("\e$,15d6-5p\e(B" . "\e$,4!*")\e(B")
289 ("\e$,15d6-5p6-\e(B" . "\e$,4!*\e(B")
290 ("\e$,15d6-5d\e(B" . "\e$,4!+")\e(B")
291 ("\e$,15d6-5d6-\e(B" . "\e$,4!+\e(B")
292
293 ("\e$,15e\e(B" . "\e$,4!,")\e(B")
294 ("\e$,15e6-\e(B" . "\e$,4!,\e(B")
295 ("\e$,15e6-5p\e(B" . "\e$,4!-")\e(B")
296 ("\e$,15e6-5p6-\e(B" . "\e$,4!-\e(B")
297
298 ("\e$,15f\e(B" . "\e$,4!."Y\e(B")
1d475b5e
KH		 299 ("\e$,15f6#\e(B" . "\e$,4!/"Y\e(B")
300 ("\e$,15f6-5p\e(B" . "\e$,4!0"Y\e(B")
301 ("\e$,15f6-5f\e(B" . "\e$,4!1"Y\e(B")
302 ("\e$,15f6-5g\e(B" . "\e$,4!2"Y\e(B")
77539682
KH		 303 ("\e$,15f6-5n\e(B" . "\e$,4!3\e(B")
304 ("\e$,15f6-5o\e(B" . "\e$,4!4\e(B")
1d475b5e 305 ("\e$,15f6-5u\e(B" . "\e$,4!5"Y\e(B")
77539682 306
0b520940
DL		 307 ("\e$,15g\e(B" . "\e$,4!6")\e(B")
308 ("\e$,15g6-\e(B" . "\e$,4!6\e(B")
309 ("\e$,15g6-5p\e(B" . "\e$,4!7")\e(B")
310 ("\e$,15g6-5p6-\e(B" . "\e$,4!7\e(B")
77539682 311
0b520940
DL		 312 ("\e$,15h\e(B" . "\e$,4!8")\e(B")
313 ("\e$,15h6-\e(B" . "\e$,4!8\e(B")
314 ("\e$,15h6-5p\e(B" . "\e$,4!9")\e(B")
315 ("\e$,15h6-5p6-\e(B" . "\e$,4!9")\e(B")
316 ("\e$,15h6-5h\e(B" . "\e$,4!:")\e(B")
317 ("\e$,15h6-5h6-\e(B" . "\e$,4!:\e(B")
77539682 318
1d475b5e 319 ("\e$,15i\e(B" . "\e$,4!8"#")\e(B")
0b520940
DL		 320 ;; LABIALS
321 ("\e$,15j\e(B" . "\e$,4!;")\e(B")
322 ("\e$,15j6-\e(B" . "\e$,4!;\e(B")
323 ("\e$,15j6-5p\e(B" . "\e$,4!<")\e(B")
324 ("\e$,15j6-5p6-\e(B" . "\e$,4!<\e(B")
325
326 ("\e$,15k\e(B" . "\e$,4!a"[\e(B")
327 ("\e$,15k6-\e(B" . "\e$,4!=\e(B")
328 ("\e$,15k6-5p\e(B" . "\e$,4!c"[\e(B")
329
330 ("\e$,15l\e(B" . "\e$,4!d")\e(B")
331 ("\e$,15l6-\e(B" . "\e$,4!d\e(B")
332 ("\e$,15l6-5p\e(B" . "\e$,4!e")\e(B")
333 ("\e$,15l6-5p6-\e(B" . "\e$,4!e\e(B")
334
335 ("\e$,15m\e(B" . "\e$,4!f")\e(B")
336 ("\e$,15m6-\e(B" . "\e$,4!f\e(B")
337 ("\e$,15m6-5p\e(B" . "\e$,4!g")\e(B")
338 ("\e$,15m6-5p6-\e(B" . "\e$,4!g\e(B")
77539682 339
1d475b5e 340 ("\e$,15n\e(B" . "\e$,4!h")\e(B")
77539682 341 ("\e$,15n6-\e(B" . "\e$,4!h\e(B")
1d475b5e 342 ("\e$,15n6-5p\e(B" . "\e$,4!i")\e(B")
77539682
KH		 343 ("\e$,15n6-5p6-\e(B" . "\e$,4!i\e(B")
344 ;; SEMIVOWELS
0b520940
DL		 345 ("\e$,15o\e(B" . "\e$,4!j")\e(B")
346 ("\e$,15o6-\e(B" . "\e$,4!j\e(B")
347 ("\e$,15o6-5p\e(B" . "\e$,4!k")\e(B")
348 ("\e$,15o6-5p6-\e(B" . "\e$,4!k\e(B")
77539682
KH		 349 ("\e$,16-5o\e(B" . "\e$,4!l\e(B") ;; when every ohter lig. fails.
350
0b520940 351 ("\e$,15p\e(B" . "\e$,4!n"W\e(B")
77539682 352 ;; ("\e$,15p6-\e(B" . "\\e$,4"'\e(B") ;; special case. only the topmost pos.
0b520940 353 ("\e$,15q\e(B" . "\e$,4!n"#"W\e(B")
77539682 354 ("\e$,15q6-\e(B" . "\e$,4!m\e(B") ;; IS 13194 speical rule.
0b520940
DL		 355 ("\e$,15p6!\e(B" . "\e$,4!o"[\e(B")
356 ("\e$,15p6"\e(B" . "\e$,4!p"\\e(B")
77539682 357
0b520940
DL		 358 ("\e$,15r\e(B" . "\e$,4!q")\e(B")
359 ("\e$,15r6-\e(B" . "\e$,4!q\e(B")
360 ("\e$,15s\e(B" . "\e$,4!s\e(B")
361 ("\e$,15s6-\e(B" . "\e$,4!r\e(B")
1d475b5e
KH		 362 ("\e$,15t\e(B" . "\e$,4!s"#\e(B")
363 ("\e$,15t6-\e(B" . "\e$,4!r"#\e(B")
77539682 364
1d475b5e 365 ("\e$,15u\e(B" . "\e$,4!t")\e(B")
77539682 366 ("\e$,15u6-\e(B" . "\e$,4!t\e(B")
1d475b5e 367 ("\e$,15u6-5p\e(B" . "\e$,4!u")\e(B")
77539682 368 ("\e$,15u6-5p6-\e(B" . "\e$,4!u\e(B")
0b520940
DL		 369 ;; SIBILANTS
370 ("\e$,15v\e(B" . "\e$,4!v")\e(B")
77539682 371 ("\e$,15v6-\e(B" . "\e$,4!v\e(B")
1d475b5e 372 ("\e$,15v6-5u\e(B" . "\e$,4!w")\e(B")
77539682 373 ("\e$,15v6-5u6-\e(B" . "\e$,4!w\e(B")
1d475b5e 374 ("\e$,15v6-5p\e(B" . "\e$,4!x")\e(B")
77539682
KH		 375 ("\e$,15v6-5p6-\e(B" . "\e$,4!x\e(B")
376
1d475b5e 377 ("\e$,15w\e(B" . "\e$,4!y")\e(B")
77539682 378 ("\e$,15w6-\e(B" . "\e$,4!y\e(B")
1d475b5e 379 ("\e$,15x\e(B" . "\e$,4!z")\e(B")
77539682 380 ("\e$,15x6-\e(B" . "\e$,4!z\e(B")
1d475b5e 381 ("\e$,15x6-5p\e(B" . "\e$,4!{")\e(B")
77539682
KH		 382 ("\e$,15x6-5p6-\e(B" . "\e$,4!{\e(B")
383
384 ("\e$,15y\e(B" . "\e$,4!}\e(B")
385 ("\e$,15y6-\e(B" . "\e$,4!|\e(B")
386 ("\e$,15y6#\e(B" . "\e$,4!~\e(B")
387 ("\e$,15y6-5p\e(B" . "\e$,4!\7f\e(B")
1d475b5e
KH		 388 ("\e$,15y6-5n\e(B" . "\e$,4" \e(B")
389 ("\e$,15y6-5o\e(B" . "\e$,4"!\e(B")
0b520940 390 ;; NUKTAS
1d475b5e 391 ("\e$,168\e(B" . "\e$,4 f"R"S\e(B")
0b520940
DL		 392 ("\e$,1686-\e(B" . "\e$,4 d\e(B")
393 ("\e$,169\e(B" . "\e$,4 k")\e(B")
394 ("\e$,1696-\e(B" . "\e$,4 k\e(B")
395 ("\e$,16:\e(B" . "\e$,4 n")\e(B")
396 ("\e$,16:6-\e(B" . "\e$,4 n\e(B")
397 ("\e$,16;\e(B" . "\e$,4 w")\e(B")
398 ("\e$,16;6-\e(B" . "\e$,4 w\e(B")
399 ("\e$,16<\e(B" . "\e$,4!#"W\e(B")
400 ("\e$,16=\e(B" . "\e$,4!'"X\e(B")
401 ("\e$,16>\e(B" . "\e$,4!b"[\e(B")
402 ("\e$,16>6-\e(B" . "\e$,4!>\e(B")
1d475b5e 403 ("\e$,16?\e(B" . "\e$,4!j"#")\e(B")
77539682 404 ;; misc modifiers.
1d475b5e 405 ("\e$,15A\e(B" . "\\e$,4"$\e(B")
0b520940 406 ("\e$,15B\e(B" . "\\e$,4"&\e(B")
77539682 407 ("\e$,15C\e(B" . "\e$,4 F\e(B")
1d475b5e 408 ("\e$,15|\e(B" . "\e$,4"#\e(B")
77539682 409 ("\e$,15}\e(B" . "\e$,4 E\e(B")
1d475b5e
KH		 410 ("\e$,16-\e(B" . "\e$,4""\e(B")
411 ("\e$,16-5p\e(B" . "\e$,4"%\e(B") ;; following "r"
0b520940 412 ;; ("\e$,160\e(B" . "\e$,4 D\e(B")
77539682 413 ;; ("\e$,16D\e(B" . "\e$,4 J\e(B")
0b520940
DL		 414 ;; ("\e$,16F\e(B" . "")
415 ;; ("\e$,16G\e(B" . "")
416 ;; ("\e$,16H\e(B" . "")
417 ;; ("\e$,16I\e(B" . "")
418 ;; ("\e$,16J\e(B" . "")
419 ;; ("\e$,16K\e(B" . "")
420 ;; ("\e$,16L\e(B" . "")
421 ;; ("\e$,16M\e(B" . "")
422 ;; ("\e$,16N\e(B" . "")
77539682
KH		 423 ;; ("\e$,16O\e(B" . "")
424 )
0b520940 425 "Devanagari characters to glyphs conversion table.
77539682
KH		 426Default value contains only the basic rules. You may add your own
427preferred rule from the sanskrit fonts." )
1bec6fdb
RS		 428
429(defvar dev-char-glyph-hash
430 (let* ((hash (makehash 'equal)))
431 (mapc (function (lambda (x) (puthash (car x) (cdr x) hash)))
432 dev-char-glyph)
433 hash))
434
435(defvar dev-char-glyph-regexp
4f102de2 436 (devanagari-regexp-of-hashtbl-keys dev-char-glyph-hash))
1bec6fdb
RS		 437
438;; glyph-to-glyph conversion table.
0b520940 439;; it is supposed that glyphs are ordered in
1bec6fdb
RS		 440;; [consonant/nukta] - [matra/halant] - [preceding-r] - [anuswar].
441
77539682 442(defvar dev-glyph-glyph
1d475b5e
KH		 443 '(("\\e$,4"'\e(B\\e$,4"&\e(B" . "\\e$,4"(\e(B")
444 ("\\e$,4"'\e(B\\e$,4"$\e(B" . "\\e$,4"(\e(B")
445 ("\e$,4"*\e(B\\e$,4"&\e(B" . "\e$,4"+\e(B")
446 ("\e$,4"*\e(B\\e$,4"'\e(B" . "\e$,4",\e(B")
447 ("\e$,4"*\e(B\\e$,4"'\e(B\\e$,4"&\e(B" . "\e$,4"-\e(B")
448 ("\e$,4"2\e(B\\e$,4"&\e(B" . "\e$,4"3\e(B")
449 ("\e$,4"2\e(B\\e$,4"'\e(B" . "\e$,4"4\e(B")
450 ("\e$,4"2\e(B\\e$,4"'\e(B\\e$,4"&\e(B" . "\e$,4"5\e(B")
451 ("\e$,4"#\e(B\\e$,4"6\e(B" . "\e$,4"7\e(B")
452 ("\e$,4"%\e(B\\e$,4"6\e(B" . "\e$,4"8\e(B")
453 ;;("\e$,4"6\e(B" . "\e$,4"9\e(B")
454 ("\e$,4"#\e(B\\e$,4":\e(B" . "\e$,4";\e(B")
455 ("\e$,4"%\e(B\\e$,4":\e(B" . "\e$,4"<\e(B")
456 ;;("\e$,4":\e(B" . "\e$,4"=\e(B")
457 ("\\e$,4"@\e(B\\e$,4"&\e(B" . "\\e$,4"A\e(B")
458 ("\\e$,4"@\e(B\\e$,4"'\e(B" . "\\e$,4"B\e(B")
459 ("\\e$,4"@\e(B\\e$,4"'\e(B\\e$,4"&\e(B" . "\\e$,4"C\e(B")
460 ("\\e$,4"D\e(B\\e$,4"&\e(B" . "\\e$,4"E\e(B")
461 ("\\e$,4"D\e(B\\e$,4"'\e(B" . "\\e$,4"F\e(B")
462 ("\\e$,4"D\e(B\\e$,4"'\e(B\\e$,4"&\e(B" . "\\e$,4"G\e(B")
463 ("\\e$,4"H\e(B\\e$,4"&\e(B" . "\\e$,4"I\e(B")
464 ("\\e$,4"H\e(B\\e$,4"'\e(B" . "\\e$,4"J\e(B")
465 ("\\e$,4"H\e(B\\e$,4"'\e(B\\e$,4"&\e(B" . "\\e$,4"K\e(B")
466 ("\\e$,4"L\e(B\\e$,4"&\e(B" . "\\e$,4"M\e(B")
467 ("\\e$,4"L\e(B\\e$,4"'\e(B" . "\\e$,4"N\e(B")
468 ("\\e$,4"L\e(B\\e$,4"'\e(B\\e$,4"&\e(B" . "\\e$,4"O\e(B")
77539682 469 ))
1bec6fdb
RS		 470(defvar dev-glyph-glyph-hash
471 (let* ((hash (makehash 'equal)))
472 (mapc (function (lambda (x) (puthash (car x) (cdr x) hash)))
473 dev-glyph-glyph)
474 hash))
475(defvar dev-glyph-glyph-regexp
4f102de2 476 (devanagari-regexp-of-hashtbl-keys dev-glyph-glyph-hash))
1bec6fdb
RS		 477
478
479;; yet another glyph-to-glyph conversions.
77539682 480(defvar dev-glyph-glyph-2
1d475b5e
KH		 481 '(("\e$,4"*\e(B" . "\e$,4".\e(B")
482 ("\e$,4"+\e(B" . "\e$,4"/\e(B")
483 ("\e$,4",\e(B" . "\e$,4"0\e(B")
484 ("\e$,4"-\e(B" . "\e$,4"1\e(B")))
1bec6fdb
RS		 485(defvar dev-glyph-glyph-2-hash
486 (let* ((hash (makehash 'equal)))
487 (mapc (function (lambda (x) (puthash (car x) (cdr x) hash)))
488 dev-glyph-glyph-2)
489 hash))
490(defvar dev-glyph-glyph-2-regexp
4f102de2 491 (devanagari-regexp-of-hashtbl-keys dev-glyph-glyph-2-hash))
1bec6fdb
RS		 492
493
494(defun dev-charseq (from &optional to)
495 (if (null to) (setq to from))
0b520940
DL		 496 (devanagari-range (make-char 'devanagari-glyph from)
497 (make-char 'devanagari-glyph to)))
1bec6fdb
RS		 498
499(defvar dev-glyph-cvn
0b520940 500 (append
1bec6fdb
RS		 501 (dev-charseq #x2b)
502 (dev-charseq #x3c #xc1)
503 (dev-charseq #xc3))
504 "Devanagari Consonants/Vowels/Nukta Glyphs")
505
506(defvar dev-glyph-space
507 (dev-charseq #xf0 #xfe)
508 "Devanagari Spacing Glyphs")
509
510(defvar dev-glyph-right-modifier
0b520940 511 (append
1bec6fdb
RS		 512 (dev-charseq #xc9)
513 (dev-charseq #xd2 #xd5))
514 "Devanagari Modifiers attached at the right side.")
515
516(defvar dev-glyph-right-modifier-regexp
517 (concat "[" dev-glyph-right-modifier "]"))
518
519(defvar dev-glyph-left-matra
520 (dev-charseq #xca #xd1)
521 "Devanagari Matras attached at the left side.")
522
523(defvar dev-glyph-top-matra
524 (dev-charseq #xe0 #xef)
525 "Devanagari Matras attached at the top side.")
526
527(defvar dev-glyph-bottom-modifier
0b520940 528 (append
1bec6fdb
RS		 529 (dev-charseq #xd6 #xdf)
530 (dev-charseq #xc2))
531 "Devanagari Modifiers attached at the bottom.")
532
533(defvar dev-glyph-order
534 `((,dev-glyph-cvn . 1)
535 (,dev-glyph-space . 2)
536 (,dev-glyph-right-modifier . 3)
537 (,dev-glyph-left-matra . 3) ;; processed by reference point.
538 (,dev-glyph-top-matra . 4)
539 (,(dev-charseq #xc7 #xc8) . 5)
540 (,(dev-charseq #xc6) . 6)
541 (,(dev-charseq #xc5) . 7)
542 (,dev-glyph-bottom-modifier . 8)))
543
0b520940 544(mapc
1bec6fdb 545 (function (lambda (x)
0b520940 546 (mapc
1bec6fdb
RS		 547 (function (lambda (y)
548 (put-char-code-property y 'composition-order (cdr x))))
549 (car x))))
550 dev-glyph-order)
551
552(mapc
553 (function (lambda (x)
554 (put-char-code-property x 'reference-point '(3 . 5))))
555 dev-glyph-left-matra)
556
557(defun devanagari-compose-syllable-string (string)
558 (with-temp-buffer
559 (insert (decompose-string string))
560 (devanagari-compose-syllable-region (point-min) (point-max))
561 (buffer-string)))
562
77539682
KH		 563(defun devanagari-compose-syllable-region (from to)
564 "Compose devanagari syllable in region FROM to TO."
565 (let ((glyph-str nil) (cons-num 0) glyph-str-list
0b520940
DL		 566 (last-halant nil) (preceding-r nil) (last-modifier nil)
567 (last-char (char-before to)) match-str
568 glyph-block split-pos)
77539682
KH		 569 (save-excursion
570 (save-restriction
0b520940
DL		 571 ;;; *** char-to-glyph conversion ***
572 ;; Special rule 1. -- Last halant must be preserved.
573 (if (eq last-char ?\e$,16-\e(B)
574 (progn
575 (setq last-halant t)
576 (narrow-to-region from (1- to)))
577 (narrow-to-region from to)
578 ;; note if the last char is modifier.
579 (if (or (eq last-char ?\e$,15A\e(B) (eq last-char ?\e$,15B\e(B))
580 (setq last-modifier t)))
581 (goto-char (point-min))
582 ;; Special rule 2. -- preceding "r halant" must be modifier.
583 (when (looking-at "\e$,15p6-\e(B.")
584 (setq preceding-r t)
585 (goto-char (+ 2 (point))))
586 ;; translate the rest characters into glyphs
587 (while (re-search-forward dev-char-glyph-regexp nil t)
588 (setq match-str (match-string 0))
589 (setq glyph-str
590 (concat glyph-str
591 (gethash match-str dev-char-glyph-hash)))
592 ;; count the number of consonant-glyhs.
593 (if (string-match devanagari-consonant match-str)
594 (setq cons-num (1+ cons-num))))
595 ;; preceding-r must be attached before the anuswar if exists.
596 (if preceding-r
597 (if last-modifier
598 (setq glyph-str (concat (substring glyph-str 0 -1)
599 "\e$,4"'\e(B" (substring glyph-str -1)))
600 (setq glyph-str (concat glyph-str "\e$,4"'\e(B"))))
601 (if last-halant (setq glyph-str (concat glyph-str "\e$,4""\e(B")))
602 ;;; *** glyph-to-glyph conversion ***
603 (when (string-match dev-glyph-glyph-regexp glyph-str)
604 (setq glyph-str
605 (replace-match (gethash (match-string 0 glyph-str)
606 dev-glyph-glyph-hash)
607 nil t glyph-str))
608 (if (and (> cons-num 1)
609 (string-match dev-glyph-glyph-2-regexp glyph-str))
610 (setq glyph-str
611 (replace-match (gethash (match-string 0 glyph-str)
612 dev-glyph-glyph-2-hash)
613 nil t glyph-str))))
614 ;;; *** glyph reordering ***
615 (while (setq split-pos (string-match "\e$,4""\e(B\\|.$" glyph-str))
616 (setq glyph-block (substring glyph-str 0 (1+ split-pos)))
617 (setq glyph-str (substring glyph-str (1+ split-pos)))
618 (setq
619 glyph-block
620 (if (string-match dev-glyph-right-modifier-regexp glyph-block)
621 (sort (string-to-list glyph-block)
622 (function (lambda (x y)
623 (< (get-char-code-property x 'composition-order)
624 (get-char-code-property y 'composition-order)))))
625 (sort (string-to-list glyph-block)
626 (function (lambda (x y)
627 (let ((xo (get-char-code-property x 'composition-order))
628 (yo (get-char-code-property y 'composition-order)))
629 (if (= xo 2) nil (if (= yo 2) t (< xo yo)))))))))
630 (setq glyph-str-list (nconc glyph-str-list glyph-block)))
631 ;; concatenate and attach reference-points.
632 (setq glyph-str
633 (cdr
634 (apply
635 'nconc
636 (mapcar
637 (function (lambda (x)
638 (list
639 (or (get-char-code-property x 'reference-point)
640 '(5 . 3) ;; default reference point.
641 )
642 x)))
643 glyph-str-list))))))
77539682 644 (compose-region from to glyph-str)))
4ed46869 645
650e8505 646(provide 'devan-util)
02ed5b47
PJ		 647
648;;; devan-util.el ends here
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