1 ;;; devan-util.el --- Support for composing Devanagari characters -*-coding: iso-2022-7bit;-*-
3 ;; Copyright (C) 2001 Free Software Foundation, Inc.
5 ;; Maintainer: KAWABATA, Taichi <kawabata@m17n.org>
6 ;; Keywords: multilingual, Devanagari
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.
25 ;; Created: Feb. 17. 2001
29 ;; This file provides character(Unicode) to glyph(CDAC) conversion and
30 ;; composition of Devanagari script characters.
34 ;; Devanagari Composable Pattern
42 ;; (N .. Zerowidth Non Joiner)
43 ;; (J .. Zerowidth Joiner. )
46 ;; 2. syllable : maximum of 5 consecutive consonants. (e.g. kartsnya)
47 ;; ((CH)?(CH)?(CH)?CH)?C(H|M?(A|D)?)?
49 (defconst devanagari-consonant
50 "[
\e$,15U
\e(B-
\e$,15y68
\e(B-
\e$,16?
\e(B]")
52 ;;("
\e$,16B
\e(B" . nil)
53 ;;("
\e$,16A
\e(B" . nil)
54 ;;("
\e$,16C
\e(B" . nil)
57 (defconst devanagari-composable-pattern
59 "\\([
\e$,15E
\e(B-
\e$,15T6@6A
\e(B][
\e$,15A5B
\e(B]?\\)\\|[
\e$,15C6D
\e(B]"
61 "\\(?:\\(?:[
\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\\)?"
62 "[
\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]?\\)?"
64 "Regexp matching a composable sequence of Devanagari characters.")
66 (dolist (range '((#x0903 . #x0903)
69 (set-char-table-range indian-composable-pattern range
70 devanagari-composable-pattern))
73 (defun devanagari-compose-region (from to)
77 (narrow-to-region from to)
78 (goto-char (point-min))
79 (while (re-search-forward devanagari-composable-pattern nil t)
80 (devanagari-compose-syllable-region (match-beginning 0)
82 (defun devanagari-compose-string (string)
84 (insert (decompose-string string))
85 (devanagari-compose-region (point-min) (point-max))
89 (defun devanagari-post-read-conversion (len)
92 (let ((buffer-modified-p (buffer-modified-p)))
93 (narrow-to-region (point) (+ (point) len))
94 (devanagari-compose-region (point-min) (point-max))
95 (set-buffer-modified-p buffer-modified-p)
96 (- (point-max) (point-min))))))
98 (defun devanagari-regexp-of-hashtbl-keys (hashtbl)
99 "Return a regular expression that matches all keys in hashtable HASHTBL."
100 (let ((max-specpdl-size 1000))
104 (maphash (function (lambda (key val) (setq dummy (cons key dummy)))) hashtbl)
106 (function (lambda (x y) (> (length x) (length y))))))))
109 (defun devanagari-composition-function (pos &optional string)
110 "Compose Devanagari characters after the position POS.
111 If STRING is not nil, it is a string, and POS is an index to the string.
112 In this case, compose characters after POS of the string."
114 ;; Not yet implemented.
117 (if (looking-at devanagari-composable-pattern)
119 (devanagari-compose-syllable-region pos (match-end 0))))))
121 ;; Notes on conversion steps.
123 ;; 1. chars to glyphs
125 ;; Rules will not be applied to the halant appeared at the end of the
126 ;; text. Also, the preceding/following "r" will be treated as special case.
128 ;; 2. glyphs reordering.
130 ;; The glyphs are split by halant, and each glyph groups are
131 ;; re-ordered in the following order.
133 ;; Note that `consonant-glyph' mentioned here does not contain the
134 ;; vertical bar (right modifier) attached at the right of the
137 ;; If the glyph-group contains right modifier,
138 ;; (1) consonant-glyphs/vowels, with nukta sign
140 ;; (3) right modifier (may be matra)
145 ;; (8) bottom matra or halant.
148 ;; (1) consonant-glyph/vowels, with nukta sign
154 ;; (8) bottom matra or halant.
159 ;; For better display, some glyph display would be tuned.
163 ;; left modifiers will be attached at the left.
164 ;; others will be attached right.
167 ;; Can we generalize this methods to other Indian scripts?
169 (defvar dev-char-glyph
170 '(("
\e$,15E
\e(B" . "
\e$,4 K
\e(B")
171 ("
\e$,15F
\e(B" . "
\e$,4 K")
\e(B")
172 ("
\e$,15~
\e(B" . "
\e$,4")
\e(B")
173 ("
\e$,15G
\e(B" . "
\e$,4 \
\e(B")
174 ("
\e$,15
\7f\e(B" . "
\e$,4"*
\e(B")
175 ("
\e$,15
\7f5A
\e(B" . "
\e$,4"*
\e(B\
\e$,4"&
\e(B")
176 ("
\e$,15H
\e(B" . "
\e$,4 \"'
\e(B")
177 ("
\e$,15H5A
\e(B" . "
\e$,4 \"'"&
\e(B")
178 ("
\e$,16
\e(B" . "
\e$,4"2
\e(B")
179 ("
\e$,16 5A
\e(B" . "
\e$,4"2"&
\e(B")
180 ("
\e$,15I
\e(B" . "
\e$,4 ]
\e(B")
181 ("
\e$,16!
\e(B" . "
\e$,4"6
\e(B")
182 ("
\e$,15J
\e(B" . "
\e$,4 ^"P
\e(B")
183 ("
\e$,16"
\e(B" . "
\e$,4":
\e(B")
184 ("
\e$,15K
\e(B" . "
\e$,4 `"Q
\e(B")
185 ("
\e$,16#
\e(B" . "
\e$,4">
\e(B")
186 ;;("
\e$,15L
\e(B" . nil) ; not implemented.
187 ("
\e$,16$
\e(B" . "
\e$,4"?
\e(B")
188 ("
\e$,15M
\e(B" . "
\e$,4 b"L
\e(B")
189 ("
\e$,15M5A
\e(B" . "
\e$,4 b"$
\e(B")
190 ("
\e$,15M5B
\e(B" . "
\e$,4 b"$
\e(B")
191 ("
\e$,16%
\e(B" . "\
\e$,4"L
\e(B")
192 ("
\e$,15N
\e(B" . "
\e$,4 b"@
\e(B")
193 ("
\e$,15N5A
\e(B" . "
\e$,4 b"@"&
\e(B")
194 ("
\e$,16&
\e(B" . "\
\e$,4"@
\e(B")
195 ("
\e$,16&5A
\e(B" . "\
\e$,4"@
\e(B\
\e$,4"&
\e(B")
196 ("
\e$,15O
\e(B" . "
\e$,4 b
\e(B")
197 ("
\e$,16'
\e(B" . "\
\e$,4"D
\e(B")
198 ("
\e$,16'5A
\e(B" . "\
\e$,4"D
\e(B\
\e$,4"&
\e(B")
199 ("
\e$,15P
\e(B" . "
\e$,4 b"D
\e(B")
200 ("
\e$,15P5A
\e(B" . "
\e$,4 b"D"&
\e(B")
201 ("
\e$,16(
\e(B" . "\
\e$,4"H
\e(B")
202 ("
\e$,16(5A
\e(B" . "\
\e$,4"H
\e(B\
\e$,4"&
\e(B")
203 ("
\e$,15Q
\e(B" . "
\e$,4 K")"L
\e(B") ;; special rule for reodering.
204 ("
\e$,15Q5A
\e(B" . "
\e$,4 K")"$
\e(B")
205 ("
\e$,15Q5B
\e(B" . "
\e$,4 K")"$
\e(B")
206 ("
\e$,16)
\e(B" . "\
\e$,4")"L
\e(B")
207 ("
\e$,16)5A
\e(B" . "\
\e$,4")"$
\e(B")
208 ("
\e$,16)5B
\e(B" . "\
\e$,4")"$
\e(B")
209 ("
\e$,15R
\e(B" . "
\e$,4 K")"@
\e(B")
210 ("
\e$,15R5A
\e(B" . "
\e$,4 K")"@"&
\e(B")
211 ("
\e$,16*
\e(B" . "\
\e$,4")"@
\e(B")
212 ("
\e$,16*5A
\e(B" . "\
\e$,4")"@"&
\e(B")
213 ("
\e$,15S
\e(B" . "
\e$,4 K")"D
\e(B")
214 ("
\e$,15S5A
\e(B" . "
\e$,4 K")"D"&
\e(B")
215 ("
\e$,16+
\e(B" . "\
\e$,4")"D
\e(B")
216 ("
\e$,16+5A
\e(B" . "\
\e$,4")"D"&
\e(B")
217 ("
\e$,15T
\e(B" . "
\e$,4 K")"H
\e(B")
218 ("
\e$,15T5A
\e(B" . "
\e$,4 K")"H"&
\e(B")
219 ("
\e$,16,
\e(B" . "\
\e$,4")"H
\e(B")
220 ("
\e$,16,5A
\e(B" . "\
\e$,4")"H"&
\e(B")
221 ("
\e$,16@
\e(B" . "
\e$,4 a"Q
\e(B")
222 ;;("
\e$,16B
\e(B" . nil)
223 ;;("
\e$,16A
\e(B" . nil)
224 ;;("
\e$,16C
\e(B" . nil)
227 ("
\e$,15U
\e(B" . "
\e$,4 e"R
\e(B")
228 ("
\e$,15U6-
\e(B" . "
\e$,4 c
\e(B")
229 ("
\e$,15U6-5p
\e(B" . "
\e$,4 g"R
\e(B")
230 ("
\e$,15U6-5d
\e(B" . "
\e$,4 h"R
\e(B")
231 ("
\e$,15U6-5w
\e(B" . "
\e$,4 i")
\e(B")
232 ("
\e$,15U6-5w6-
\e(B" . "
\e$,4 i
\e(B")
234 ("
\e$,15V
\e(B" . "
\e$,4 j")
\e(B")
235 ("
\e$,15V6-
\e(B" . "
\e$,4 j
\e(B")
236 ("
\e$,15V6-5p
\e(B" . "
\e$,4 l")
\e(B")
237 ("
\e$,15V6-5p6-
\e(B" . "
\e$,4 l
\e(B")
239 ("
\e$,15W
\e(B" . "
\e$,4 m")
\e(B")
240 ("
\e$,15W6-
\e(B" . "
\e$,4 m
\e(B")
241 ("
\e$,15W6-5p
\e(B" . "
\e$,4 o")
\e(B")
242 ("
\e$,15W6-5p6-
\e(B" . "
\e$,4 o
\e(B")
244 ("
\e$,15X
\e(B" . "
\e$,4 p")
\e(B")
245 ("
\e$,15X6-
\e(B" . "
\e$,4 p
\e(B")
246 ("
\e$,15X6-5p
\e(B" . "
\e$,4 q")
\e(B")
247 ("
\e$,15X6-5p6-
\e(B" . "
\e$,4 q
\e(B")
249 ("
\e$,15Y
\e(B" . "
\e$,4 r"S
\e(B")
251 ("
\e$,15Z
\e(B" . "
\e$,4 s")
\e(B")
252 ("
\e$,15Z6-
\e(B" . "
\e$,4 s
\e(B")
253 ("
\e$,15Z6-5p
\e(B" . "
\e$,4 t")
\e(B")
254 ("
\e$,15Z6-5p6-
\e(B" . "
\e$,4 t
\e(B")
256 ("
\e$,15[
\e(B" . "
\e$,4 u"T
\e(B")
258 ("
\e$,15\
\e(B" . "
\e$,4 v")
\e(B")
259 ("
\e$,15\6-
\e(B" . "
\e$,4 v
\e(B")
260 ("
\e$,15\6-5p
\e(B" . "
\e$,4 x")
\e(B")
261 ("
\e$,15\6-5p6-
\e(B" . "
\e$,4 x
\e(B")
262 ("
\e$,15\6-5^
\e(B" . "
\e$,4 y")
\e(B")
263 ("
\e$,15\6-5^6-
\e(B" . "
\e$,4 y
\e(B")
265 ("
\e$,15]
\e(B" . "
\e$,4 z")
\e(B")
266 ("
\e$,15]6-
\e(B" . "
\e$,4 z
\e(B")
267 ("
\e$,15]6-5p
\e(B" . "
\e$,4 {")
\e(B")
268 ("
\e$,15]6-5p6-
\e(B" . "
\e$,4 {
\e(B")
270 ("
\e$,15^
\e(B" . "
\e$,4 |")
\e(B")
271 ("
\e$,15^6-
\e(B" . "
\e$,4 |
\e(B")
273 ("
\e$,15_
\e(B" . "
\e$,4 }"U
\e(B")
274 ("
\e$,15_6-5_
\e(B" . "
\e$,4 ~"U
\e(B")
275 ("
\e$,15_6-5`
\e(B" . "
\e$,4
\7f"U
\e(B")
277 ("
\e$,15`
\e(B" . "
\e$,4! "V
\e(B")
278 ("
\e$,15`6-5`
\e(B" . "
\e$,4!!"V
\e(B")
280 ("
\e$,15a
\e(B" . "
\e$,4!""W
\e(B")
281 ("
\e$,15a6-5a
\e(B" . "
\e$,4!$"W
\e(B")
282 ("
\e$,15a6-5b
\e(B" . "
\e$,4!%"W
\e(B")
284 ("
\e$,15b
\e(B" . "
\e$,4!&"X
\e(B")
286 ("
\e$,15c
\e(B" . "
\e$,4!(")
\e(B")
287 ("
\e$,15c6-
\e(B" . "
\e$,4!(
\e(B")
289 ("
\e$,15d
\e(B" . "
\e$,4!)")
\e(B")
290 ("
\e$,15d6-
\e(B" . "
\e$,4!)
\e(B")
291 ("
\e$,15d6-5p
\e(B" . "
\e$,4!*")
\e(B")
292 ("
\e$,15d6-5p6-
\e(B" . "
\e$,4!*
\e(B")
293 ("
\e$,15d6-5d
\e(B" . "
\e$,4!+")
\e(B")
294 ("
\e$,15d6-5d6-
\e(B" . "
\e$,4!+
\e(B")
296 ("
\e$,15e
\e(B" . "
\e$,4!,")
\e(B")
297 ("
\e$,15e6-
\e(B" . "
\e$,4!,
\e(B")
298 ("
\e$,15e6-5p
\e(B" . "
\e$,4!-")
\e(B")
299 ("
\e$,15e6-5p6-
\e(B" . "
\e$,4!-
\e(B")
301 ("
\e$,15f
\e(B" . "
\e$,4!."Y
\e(B")
302 ("
\e$,15f6#
\e(B" . "
\e$,4!/"Y
\e(B")
303 ("
\e$,15f6-5p
\e(B" . "
\e$,4!0"Y
\e(B")
304 ("
\e$,15f6-5f
\e(B" . "
\e$,4!1"Y
\e(B")
305 ("
\e$,15f6-5g
\e(B" . "
\e$,4!2"Y
\e(B")
306 ("
\e$,15f6-5n
\e(B" . "
\e$,4!3
\e(B")
307 ("
\e$,15f6-5o
\e(B" . "
\e$,4!4
\e(B")
308 ("
\e$,15f6-5u
\e(B" . "
\e$,4!5"Y
\e(B")
310 ("
\e$,15g
\e(B" . "
\e$,4!6")
\e(B")
311 ("
\e$,15g6-
\e(B" . "
\e$,4!6
\e(B")
312 ("
\e$,15g6-5p
\e(B" . "
\e$,4!7")
\e(B")
313 ("
\e$,15g6-5p6-
\e(B" . "
\e$,4!7
\e(B")
315 ("
\e$,15h
\e(B" . "
\e$,4!8")
\e(B")
316 ("
\e$,15h6-
\e(B" . "
\e$,4!8
\e(B")
317 ("
\e$,15h6-5p
\e(B" . "
\e$,4!9")
\e(B")
318 ("
\e$,15h6-5p6-
\e(B" . "
\e$,4!9")
\e(B")
319 ("
\e$,15h6-5h
\e(B" . "
\e$,4!:")
\e(B")
320 ("
\e$,15h6-5h6-
\e(B" . "
\e$,4!:
\e(B")
322 ("
\e$,15i
\e(B" . "
\e$,4!8"#")
\e(B")
324 ("
\e$,15j
\e(B" . "
\e$,4!;")
\e(B")
325 ("
\e$,15j6-
\e(B" . "
\e$,4!;
\e(B")
326 ("
\e$,15j6-5p
\e(B" . "
\e$,4!<")
\e(B")
327 ("
\e$,15j6-5p6-
\e(B" . "
\e$,4!<
\e(B")
329 ("
\e$,15k
\e(B" . "
\e$,4!a"[
\e(B")
330 ("
\e$,15k6-
\e(B" . "
\e$,4!=
\e(B")
331 ("
\e$,15k6-5p
\e(B" . "
\e$,4!c"[
\e(B")
333 ("
\e$,15l
\e(B" . "
\e$,4!d")
\e(B")
334 ("
\e$,15l6-
\e(B" . "
\e$,4!d
\e(B")
335 ("
\e$,15l6-5p
\e(B" . "
\e$,4!e")
\e(B")
336 ("
\e$,15l6-5p6-
\e(B" . "
\e$,4!e
\e(B")
338 ("
\e$,15m
\e(B" . "
\e$,4!f")
\e(B")
339 ("
\e$,15m6-
\e(B" . "
\e$,4!f
\e(B")
340 ("
\e$,15m6-5p
\e(B" . "
\e$,4!g")
\e(B")
341 ("
\e$,15m6-5p6-
\e(B" . "
\e$,4!g
\e(B")
343 ("
\e$,15n
\e(B" . "
\e$,4!h")
\e(B")
344 ("
\e$,15n6-
\e(B" . "
\e$,4!h
\e(B")
345 ("
\e$,15n6-5p
\e(B" . "
\e$,4!i")
\e(B")
346 ("
\e$,15n6-5p6-
\e(B" . "
\e$,4!i
\e(B")
348 ("
\e$,15o
\e(B" . "
\e$,4!j")
\e(B")
349 ("
\e$,15o6-
\e(B" . "
\e$,4!j
\e(B")
350 ("
\e$,15o6-5p
\e(B" . "
\e$,4!k")
\e(B")
351 ("
\e$,15o6-5p6-
\e(B" . "
\e$,4!k
\e(B")
352 ("
\e$,16-5o
\e(B" . "
\e$,4!l
\e(B") ;; when every ohter lig. fails.
354 ("
\e$,15p
\e(B" . "
\e$,4!n"W
\e(B")
355 ;; ("
\e$,15p6-
\e(B" . "\
\e$,4"'
\e(B") ;; special case. only the topmost pos.
356 ("
\e$,15q
\e(B" . "
\e$,4!n"#"W
\e(B")
357 ("
\e$,15q6-
\e(B" . "
\e$,4!m
\e(B") ;; IS 13194 speical rule.
358 ("
\e$,15p6!
\e(B" . "
\e$,4!o"[
\e(B")
359 ("
\e$,15p6"
\e(B" . "
\e$,4!p"\
\e(B")
361 ("
\e$,15r
\e(B" . "
\e$,4!q")
\e(B")
362 ("
\e$,15r6-
\e(B" . "
\e$,4!q
\e(B")
363 ("
\e$,15s
\e(B" . "
\e$,4!s
\e(B")
364 ("
\e$,15s6-
\e(B" . "
\e$,4!r
\e(B")
365 ("
\e$,15t
\e(B" . "
\e$,4!s"#
\e(B")
366 ("
\e$,15t6-
\e(B" . "
\e$,4!r"#
\e(B")
368 ("
\e$,15u
\e(B" . "
\e$,4!t")
\e(B")
369 ("
\e$,15u6-
\e(B" . "
\e$,4!t
\e(B")
370 ("
\e$,15u6-5p
\e(B" . "
\e$,4!u")
\e(B")
371 ("
\e$,15u6-5p6-
\e(B" . "
\e$,4!u
\e(B")
373 ("
\e$,15v
\e(B" . "
\e$,4!v")
\e(B")
374 ("
\e$,15v6-
\e(B" . "
\e$,4!v
\e(B")
375 ("
\e$,15v6-5u
\e(B" . "
\e$,4!w")
\e(B")
376 ("
\e$,15v6-5u6-
\e(B" . "
\e$,4!w
\e(B")
377 ("
\e$,15v6-5p
\e(B" . "
\e$,4!x")
\e(B")
378 ("
\e$,15v6-5p6-
\e(B" . "
\e$,4!x
\e(B")
380 ("
\e$,15w
\e(B" . "
\e$,4!y")
\e(B")
381 ("
\e$,15w6-
\e(B" . "
\e$,4!y
\e(B")
382 ("
\e$,15x
\e(B" . "
\e$,4!z")
\e(B")
383 ("
\e$,15x6-
\e(B" . "
\e$,4!z
\e(B")
384 ("
\e$,15x6-5p
\e(B" . "
\e$,4!{")
\e(B")
385 ("
\e$,15x6-5p6-
\e(B" . "
\e$,4!{
\e(B")
387 ("
\e$,15y
\e(B" . "
\e$,4!}
\e(B")
388 ("
\e$,15y6-
\e(B" . "
\e$,4!|
\e(B")
389 ("
\e$,15y6#
\e(B" . "
\e$,4!~
\e(B")
390 ("
\e$,15y6-5p
\e(B" . "
\e$,4!
\7f\e(B")
391 ("
\e$,15y6-5n
\e(B" . "
\e$,4"
\e(B")
392 ("
\e$,15y6-5o
\e(B" . "
\e$,4"!
\e(B")
394 ("
\e$,168
\e(B" . "
\e$,4 f"R"S
\e(B")
395 ("
\e$,1686-
\e(B" . "
\e$,4 d
\e(B")
396 ("
\e$,169
\e(B" . "
\e$,4 k")
\e(B")
397 ("
\e$,1696-
\e(B" . "
\e$,4 k
\e(B")
398 ("
\e$,16:
\e(B" . "
\e$,4 n")
\e(B")
399 ("
\e$,16:6-
\e(B" . "
\e$,4 n
\e(B")
400 ("
\e$,16;
\e(B" . "
\e$,4 w")
\e(B")
401 ("
\e$,16;6-
\e(B" . "
\e$,4 w
\e(B")
402 ("
\e$,16<
\e(B" . "
\e$,4!#"W
\e(B")
403 ("
\e$,16=
\e(B" . "
\e$,4!'"X
\e(B")
404 ("
\e$,16>
\e(B" . "
\e$,4!b"[
\e(B")
405 ("
\e$,16>6-
\e(B" . "
\e$,4!>
\e(B")
406 ("
\e$,16?
\e(B" . "
\e$,4!j"#")
\e(B")
408 ("
\e$,15A
\e(B" . "\
\e$,4"$
\e(B")
409 ("
\e$,15B
\e(B" . "\
\e$,4"&
\e(B")
410 ("
\e$,15C
\e(B" . "
\e$,4 F
\e(B")
411 ("
\e$,15|
\e(B" . "
\e$,4"#
\e(B")
412 ("
\e$,15}
\e(B" . "
\e$,4 E
\e(B")
413 ("
\e$,16-
\e(B" . "
\e$,4""
\e(B")
414 ("
\e$,16-5p
\e(B" . "
\e$,4"%
\e(B") ;; following "r"
415 ;; ("
\e$,160
\e(B" . "
\e$,4 D
\e(B")
416 ("
\e$,16D
\e(B" . "
\e$,4 J
\e(B")
417 ;; ("
\e$,16F
\e(B" . "")
418 ;; ("
\e$,16G
\e(B" . "")
419 ;; ("
\e$,16H
\e(B" . "")
420 ;; ("
\e$,16I
\e(B" . "")
421 ;; ("
\e$,16J
\e(B" . "")
422 ;; ("
\e$,16K
\e(B" . "")
423 ;; ("
\e$,16L
\e(B" . "")
424 ;; ("
\e$,16M
\e(B" . "")
425 ;; ("
\e$,16N
\e(B" . "")
426 ;; ("
\e$,16O
\e(B" . "")
428 "Devanagari characters to glyphs conversion table.
429 Default value contains only the basic rules. You may add your own
430 preferred rule from the sanskrit fonts." )
432 (defvar dev-char-glyph-hash
433 (let* ((hash (make-hash-table :test 'equal)))
434 (mapc (function (lambda (x) (puthash (car x) (cdr x) hash)))
438 (defvar dev-char-glyph-regexp
439 (devanagari-regexp-of-hashtbl-keys dev-char-glyph-hash))
441 ;; glyph-to-glyph conversion table.
442 ;; it is supposed that glyphs are ordered in
443 ;; [consonant/nukta] - [matra/halant] - [preceding-r] - [anuswar].
445 (defvar dev-glyph-glyph
446 '(("\
\e$,4"'
\e(B\
\e$,4"&
\e(B" . "\
\e$,4"(
\e(B")
447 ("\
\e$,4"'
\e(B\
\e$,4"$
\e(B" . "\
\e$,4"(
\e(B")
448 ("
\e$,4"*
\e(B\
\e$,4"&
\e(B" . "
\e$,4"+
\e(B")
449 ("
\e$,4"*
\e(B\
\e$,4"'
\e(B" . "
\e$,4",
\e(B")
450 ("
\e$,4"*
\e(B\
\e$,4"'
\e(B\
\e$,4"&
\e(B" . "
\e$,4"-
\e(B")
451 ("
\e$,4"2
\e(B\
\e$,4"&
\e(B" . "
\e$,4"3
\e(B")
452 ("
\e$,4"2
\e(B\
\e$,4"'
\e(B" . "
\e$,4"4
\e(B")
453 ("
\e$,4"2
\e(B\
\e$,4"'
\e(B\
\e$,4"&
\e(B" . "
\e$,4"5
\e(B")
454 ("
\e$,4"#
\e(B\
\e$,4"6
\e(B" . "
\e$,4"7
\e(B")
455 ("
\e$,4"%
\e(B\
\e$,4"6
\e(B" . "
\e$,4"8
\e(B")
456 ;;("
\e$,4"6
\e(B" . "
\e$,4"9
\e(B")
457 ("
\e$,4"#
\e(B\
\e$,4":
\e(B" . "
\e$,4";
\e(B")
458 ("
\e$,4"%
\e(B\
\e$,4":
\e(B" . "
\e$,4"<
\e(B")
459 ;;("
\e$,4":
\e(B" . "
\e$,4"=
\e(B")
460 ("\
\e$,4"@
\e(B\
\e$,4"&
\e(B" . "\
\e$,4"A
\e(B")
461 ("\
\e$,4"@
\e(B\
\e$,4"'
\e(B" . "\
\e$,4"B
\e(B")
462 ("\
\e$,4"@
\e(B\
\e$,4"'
\e(B\
\e$,4"&
\e(B" . "\
\e$,4"C
\e(B")
463 ("\
\e$,4"D
\e(B\
\e$,4"&
\e(B" . "\
\e$,4"E
\e(B")
464 ("\
\e$,4"D
\e(B\
\e$,4"'
\e(B" . "\
\e$,4"F
\e(B")
465 ("\
\e$,4"D
\e(B\
\e$,4"'
\e(B\
\e$,4"&
\e(B" . "\
\e$,4"G
\e(B")
466 ("\
\e$,4"H
\e(B\
\e$,4"&
\e(B" . "\
\e$,4"I
\e(B")
467 ("\
\e$,4"H
\e(B\
\e$,4"'
\e(B" . "\
\e$,4"J
\e(B")
468 ("\
\e$,4"H
\e(B\
\e$,4"'
\e(B\
\e$,4"&
\e(B" . "\
\e$,4"K
\e(B")
469 ("\
\e$,4"L
\e(B\
\e$,4"&
\e(B" . "\
\e$,4"M
\e(B")
470 ("\
\e$,4"L
\e(B\
\e$,4"'
\e(B" . "\
\e$,4"N
\e(B")
471 ("\
\e$,4"L
\e(B\
\e$,4"'
\e(B\
\e$,4"&
\e(B" . "\
\e$,4"O
\e(B")
473 (defvar dev-glyph-glyph-hash
474 (let* ((hash (make-hash-table :test 'equal)))
475 (mapc (function (lambda (x) (puthash (car x) (cdr x) hash)))
478 (defvar dev-glyph-glyph-regexp
479 (devanagari-regexp-of-hashtbl-keys dev-glyph-glyph-hash))
482 ;; yet another glyph-to-glyph conversions.
483 (defvar dev-glyph-glyph-2
484 '(("
\e$,4"*
\e(B" . "
\e$,4".
\e(B")
485 ("
\e$,4"+
\e(B" . "
\e$,4"/
\e(B")
486 ("
\e$,4",
\e(B" . "
\e$,4"0
\e(B")
487 ("
\e$,4"-
\e(B" . "
\e$,4"1
\e(B")))
488 (defvar dev-glyph-glyph-2-hash
489 (let* ((hash (make-hash-table :test 'equal)))
490 (mapc (function (lambda (x) (puthash (car x) (cdr x) hash)))
493 (defvar dev-glyph-glyph-2-regexp
494 (devanagari-regexp-of-hashtbl-keys dev-glyph-glyph-2-hash))
496 (defun dev-charseq (from &optional to)
497 (if (null to) (setq to from))
498 (number-sequence (decode-char 'devanagari-cdac from)
499 (decode-char 'devanagari-cdac to)))
501 (defvar dev-glyph-cvn
504 (dev-charseq #x3c #xc1)
506 "Devanagari Consonants/Vowels/Nukta Glyphs")
508 (defvar dev-glyph-space
509 (dev-charseq #xf0 #xfe)
510 "Devanagari Spacing Glyphs")
512 (defvar dev-glyph-right-modifier
515 (dev-charseq #xd2 #xd5))
516 "Devanagari Modifiers attached at the right side.")
518 (defvar dev-glyph-right-modifier-regexp
519 (concat "[" dev-glyph-right-modifier "]"))
521 (defvar dev-glyph-left-matra
522 (dev-charseq #xca #xd1)
523 "Devanagari Matras attached at the left side.")
525 (defvar dev-glyph-top-matra
526 (dev-charseq #xe0 #xef)
527 "Devanagari Matras attached at the top side.")
529 (defvar dev-glyph-bottom-modifier
531 (dev-charseq #xd6 #xdf)
533 "Devanagari Modifiers attached at the bottom.")
535 (defvar dev-glyph-order
536 `((,dev-glyph-cvn . 1)
537 (,dev-glyph-space . 2)
538 (,dev-glyph-right-modifier . 3)
539 (,dev-glyph-left-matra . 3) ;; processed by reference point.
540 (,dev-glyph-top-matra . 4)
541 (,(dev-charseq #xc7 #xc8) . 5)
542 (,(dev-charseq #xc4) . 6)
543 (,(dev-charseq #xc6) . 6)
544 (,(dev-charseq #xc5) . 7)
545 (,dev-glyph-bottom-modifier . 8)))
548 (function (lambda (x)
550 (function (lambda (y)
551 (put-char-code-property y 'composition-order (cdr x))))
556 (function (lambda (x)
557 (put-char-code-property x 'reference-point '(3 . 5))))
558 dev-glyph-left-matra)
560 (defun devanagari-compose-syllable-string (string)
562 (insert (decompose-string string))
563 (devanagari-compose-syllable-region (point-min) (point-max))
566 (defun devanagari-compose-syllable-region (from to)
567 "Compose devanagari syllable in region FROM to TO."
568 (let ((glyph-str nil) (cons-num 0) glyph-str-list
569 (last-halant nil) (preceding-r nil) (last-modifier nil)
570 (last-char (char-before to)) match-str
571 glyph-block split-pos)
574 ;;; *** char-to-glyph conversion ***
575 ;; Special rule 1. -- Last halant must be preserved.
576 (if (eq last-char ?
\e$,16-
\e(B)
579 (narrow-to-region from (1- to)))
580 (narrow-to-region from to)
581 ;; note if the last char is modifier.
582 (if (or (eq last-char ?
\e$,15A
\e(B) (eq last-char ?
\e$,15B
\e(B))
583 (setq last-modifier t)))
584 (goto-char (point-min))
585 ;; Special rule 2. -- preceding "r halant" must be modifier.
586 (when (looking-at "
\e$,15p6-
\e(B.")
588 (goto-char (+ 2 (point))))
589 ;; translate the rest characters into glyphs
590 (while (re-search-forward dev-char-glyph-regexp nil t)
591 (setq match-str (match-string 0))
594 (gethash match-str dev-char-glyph-hash)))
595 ;; count the number of consonant-glyhs.
596 (if (string-match devanagari-consonant match-str)
597 (setq cons-num (1+ cons-num))))
598 ;; preceding-r must be attached before the anuswar if exists.
601 (setq glyph-str (concat (substring glyph-str 0 -1)
602 "
\e$,4"'
\e(B" (substring glyph-str -1)))
603 (setq glyph-str (concat glyph-str "
\e$,4"'
\e(B"))))
604 (if last-halant (setq glyph-str (concat glyph-str "
\e$,4""
\e(B")))
605 ;;; *** glyph-to-glyph conversion ***
606 (when (string-match dev-glyph-glyph-regexp glyph-str)
608 (replace-match (gethash (match-string 0 glyph-str)
609 dev-glyph-glyph-hash)
611 (if (and (> cons-num 1)
612 (string-match dev-glyph-glyph-2-regexp glyph-str))
614 (replace-match (gethash (match-string 0 glyph-str)
615 dev-glyph-glyph-2-hash)
617 ;;; *** glyph reordering ***
618 (while (setq split-pos (string-match "
\e$,4""
\e(B\\|.$" glyph-str))
619 (setq glyph-block (substring glyph-str 0 (1+ split-pos)))
620 (setq glyph-str (substring glyph-str (1+ split-pos)))
623 (if (string-match dev-glyph-right-modifier-regexp glyph-block)
624 (sort (string-to-list glyph-block)
625 (function (lambda (x y)
626 (< (get-char-code-property x 'composition-order)
627 (get-char-code-property y 'composition-order)))))
628 (sort (string-to-list glyph-block)
629 (function (lambda (x y)
630 (let ((xo (get-char-code-property x 'composition-order))
631 (yo (get-char-code-property y 'composition-order)))
632 (if (= xo 2) nil (if (= yo 2) t (< xo yo)))))))))
633 (setq glyph-str-list (nconc glyph-str-list glyph-block)))
634 ;; concatenate and attach reference-points.
640 (function (lambda (x)
642 (or (get-char-code-property x 'reference-point)
643 '(5 . 3) ;; default reference point.
647 (compose-region from to glyph-str)))
649 (provide 'devan-util)
651 ;;; arch-tag: 9bc4d6e3-f2b9-4110-886e-ff9b66b7eebc
652 ;;; devan-util.el ends here