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4ed46869
KH		 1;;; devan-util.el --- Support for Devanagari Script Composition
2
3;; Copyright (C) 1996 Free Software Foundation, Inc.
4
5;; Author: KAWABATA, Taichi <kawabata@is.s.u-tokyo.ac.jp>
6
7;; Keywords: multilingual, Indian, Devanagari
8
9;; This file is part of GNU Emacs.
10
11;; GNU Emacs is free software; you can redistribute it and/or modify
12;; it under the terms of the GNU General Public License as published by
13;; the Free Software Foundation; either version 2, or (at your option)
14;; any later version.
15
16;; GNU Emacs is distributed in the hope that it will be useful,
17;; but WITHOUT ANY WARRANTY; without even the implied warranty of
18;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19;; GNU General Public License for more details.
20
21;; You should have received a copy of the GNU General Public License
e803d6bd
KH		 22;; along with GNU Emacs; see the file COPYING. If not, write to the
23;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
24;; Boston, MA 02111-1307, USA.
4ed46869
KH		 25
26;;; Commentary:
27
28;; History:
29;; 1996.10.18 written by KAWABATA, Taichi <kawabata@is.s.u-tokyo.ac.jp>
bd09f27b 30;; 1997.1.20 fixed some bugs.
37cdc7ad
KH		 31;; 1997.3.24 fixed some bugs.
32
33;; Future work ::
34;; Decompose the input characters and process them on the character basis.
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KH		 35
36;; Devanagari script composition rules and related programs.
37
38;;; Code:
39
40;;;
41;;; Steps toward composition of Devanagari Characters.
42;;;
43
37cdc7ad
KH		 44;;; Intersection Function will be used.
45(require 'cl)
46
335a7ad7
KH		 47;;;###autoload
48(defun setup-devanagari-environment ()
49 "Setup multilingual environment (MULE) for languages using Devanagari."
50 (interactive)
5e92d2b8 51 (setup-8-bit-environment "Devanagari" nil "devanagari-itrans"))
335a7ad7 52
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KH		 53;;; Basic functions.
54
55;;;###autoload
56(defun indian-to-devanagari (ch)
57 "Convert IS 13194 characters to Devanagari basic characters."
58 (let ((charcodes (split-char ch)))
59 (if (eq (car charcodes) 'indian-is13194)
60 (make-char 'indian-2-column ?\x21 (nth 1 charcodes))
61 ch)))
62
63;;;###autoload
64(defun devanagari-to-indian (ch)
65 "Convert Devanagari basic characters to IS 13194 characters."
66 (let* ((charcodes (split-char ch))
67 (charset (car charcodes))
68 (code-h (car (cdr charcodes))))
69 (if (and (eq (car charcodes) 'indian-2-column)
70 (= (nth 1 charcodes) ?\x21))
71 (make-char 'indian-is13194 (nth 2 charcodes))
72 ch)))
73
74;;;###autoload
75(defun indian-to-devanagari-region (from to)
76 "Convert IS 13194 characters in region to Devanagari basic characters."
77 (interactive "r")
78 (save-restriction
79 (narrow-to-region from to)
80 (goto-char (point-min))
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KH		 81; (while (re-search-forward "\\cd" nil t)
82 (while (re-search-forward "." nil t)
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KH		 83 (let* ((devanagari-char (indian-to-devanagari (preceding-char))))
84 (delete-char -1)
85 (insert devanagari-char)))))
86
87;;;###autoload
88(defun devanagari-to-indian-region (from to)
89 "Convert Devanagari basic characters in region to Indian characters."
90 (interactive "r")
91 (save-restriction
92 (narrow-to-region from to)
93 (goto-char (point-min))
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KH		 94; (while (re-search-forward "\\cD" nil t) ; Devanagari Character Code.
95 (while (re-search-forward "." nil t)
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KH		 96 (let* ((indian-char (devanagari-to-indian (preceding-char))))
97 (delete-char -1)
98 (insert indian-char)))))
99
100;;;###autoload
101(defun indian-to-devanagari-string (str)
102 "Convert Indian String to Devanagari Basic Character String."
103 (let ((pos 0) (dst "") (src str) char)
104 (while (not (equal src ""))
105 (setq char (string-to-char src))
106 (setq src (substring src (char-bytes char)))
107 (setq dst (concat dst (char-to-string (indian-to-devanagari char)))))
108 dst))
109
110;; Phase 0 - Determine whether the characters can be composed.
111;;
112;;;
113;;; Regular expressions to split characters for composition.
114;;;
115;;
116;; Indian script word contains one or more syllables.
117;; In BNF, it can be expressed as follows:
118;;
119;; Word ::= {Syllable} [Cons-Syllable]
120;; Syllable ::= Cons-Vowel-Syllable | Vowel-Syllable
121;; Vowel-Syllable ::= V[D]
122;; Cons-Vowel-Syllable ::= [Cons-Syllable] Full-Cons [M] [D]
bd09f27b 123;; Cons-Syllable ::= [Pure-Cons] [Pure-Cons] [Pure-Cons] Pure-Cons
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KH		 124;; Pure-Cons ::= Full-Cons H
125;; Full-Cons ::= C [N]
126;;
127;; {} repeat, [] optional
128;;
129;; C - Consonant (\e$(5!3!4!5!6!7!8!9!:!;!<!=!>!?!@!A!B!C!D!E\e(B
130;; \e$(5!F!G!H!I!J!K!L!M!N!O!P!Q!R!S!T!U!V!W!X\e(B)
131;; N - Nukta (\e$(5!i\e(B)
bd09f27b
KH		 132;; H - Halant(\e$(5!h\e(B) or Virama
133;; V - Vowel (\e$(5!$!%!&!'!(!)!*!+!,!-!.!/!0!1!2#&#'#*\e(B)
134;; ("\e$(5#&#'#*\e(B" can be obtained by IS13194 vowels with nukta.)
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KH		 135;; D - Vowel Modifiers, i.e. Anuswar, Chandrabindu (\e$(5!!!"\e(B)
136;; (Visaraga (\e$(5!#\e(B) is excluded.)
bd09f27b
KH		 137;; M - Matra (\e$(5!Z![!\!]!^!_!`!a!b!c!d!e!f!g#K#L#M\e(B)
138;; ("\e$(5#K#L#M\e(B" can be obtained by IS13194 matras with nukta.)
4ed46869 139;;
37cdc7ad
KH		 140;; In Emacs, one syllable of Indian language is considered to be one
141;; composite glyph. If we expand the above expression for
142;; cons-vowel-syllable, it would be:
4ed46869 143;;
37cdc7ad 144;; [[C [N] H] [C [N] H] [C [N] H] C [N] H] C [N] [M] [D]
4ed46869 145;;
37cdc7ad 146;; Therefore, in worst case, the one syllable may contain
4ed46869
KH		 147;; following characters.
148;;
bd09f27b
KH		 149;; C N H C N H C N H C N H C N M D
150;;
37cdc7ad
KH		 151;; The example is a sanskrit word "kArtsnya", where five consecutive
152;; consonants appear.
4ed46869 153;;
37cdc7ad
KH		 154;; On the other hand, consonant-syllable, which appears at the end of
155;; the word, would have the following expression:
4ed46869 156;;
bd09f27b 157;; [C [N] H] [C [N] H] [C [N] H] C [N] H
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KH		 158;;
159;; This is acceptable BEFORE proper consonant-syllable is input. The
160;; string which doesn't match with the above expression is invalid and
161;; thus must be fixed.
162;;
163;; Note:
164;; Third case can be considered, which is acceptable syllable and can
165;; not add any code more.
166;;
bd09f27b 167;; [[C [N] H] [C [N] H] [C [N] H] C [N] H] C [N] [M] D
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KH		 168;;
169;; However, to make editing possible even in this condition, we will
170;; not consider about this case.
37cdc7ad
KH		 171;;
172;; Note:
173;; Currently, it seems that the only following consonants would have
174;; Nukta sign attatched.
175;; (\e$(5!3!4!5!:!?!@!I\e(B)
176;; Therefore, [\e$(5!3\e(B-\e$(5!X\e(B]\e$(5!i\e(B? can be re-written as
177;; \\([\e$(5!3!4!5!:!?!@!I\e(B]\e$(5!i\e(B\\)\\|[\e$(5!3\e(B-\e$(5!X\e(B]
178
179(defconst devanagari-full-cons
180 "\\(\\([\e$(5!3!4!5!:!?!@!I\e(B]\e$(5!i\e(B\\)\\|[\e$(5!3\e(B-\e$(5!X$.$E"%\e(B]\\)"
181 "Devanagari full consonant")
182
183(defconst devanagari-pure-cons
184 (concat "\\(" devanagari-full-cons "\e$(5!h\e(B\\)")
185 "Devanagari pure consonant")
186
187(defconst devanagari-matra
188 "\\(\\([\e$(5!_![!\\e(B]\e$(5!i\e(B\\)\\|[\e$(5!Z\e(B-\e$(5!g#K#L#M\e(B]\\)"
189 "Devanagari Matra Signs. '\e$(5#K#L#M\e(B' can also be created from the combination
190of '\e$(5!_![!\\e(B' and nukta sign.")
191
192(defconst devanagari-vowel
193 "\\(\\([\e$(5!*!&!'\e(B]\e$(5!i\e(B\\)\\|[\e$(5!$\e(B-\e$(5!2#&#'#*\e(B]\\)"
194 "Devanagari Vowels. '\e$(5#&#'#*\e(B' can also be created from the combination
195of '\e$(5!*!&!'\e(B' and nukta sign.")
196
197(defconst devanagari-vowel-syllable
198 (concat devanagari-vowel "[\e$(5!!!"\e(B]?")
199 "Devanagari vowel syllable.")
200
201(defconst devanagari-cons-syllable
202 (concat devanagari-pure-cons "?" devanagari-pure-cons "?"
203 devanagari-pure-cons "?" devanagari-pure-cons "$")
204 "Devanagari consonant syllable")
205
206(defconst devanagari-cons-vowel-syllable
207 (concat "\\("
208 devanagari-pure-cons "?" devanagari-pure-cons "?"
209 devanagari-pure-cons "?" devanagari-pure-cons "\\)?"
210 devanagari-full-cons devanagari-matra "?[\e$(5!!!"\e(B]?")
211 "Devanagari consonant vowel syllable.")
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KH		 212
213;;
214;; Also, digits and virams should be processed other than syllables.
215;;
216;; In IS 13194, Avagrah is obtained by Nukta after Viram, and
217;; OM is obtained by Nukta after Chandrabindu
218;;
37cdc7ad
KH		 219
220(defconst devanagari-digit-viram-visarga
221 "[\e$(5!q\e(B-\e$(5!z!j!#\e(B]")
222(defconst devanagari-other-sign
bd09f27b 223 "\\([\e$(5!!!j\e(B]\e$(5!i\e(B\\)\\|\\([\e$(5#!#J\e(B]\\)")
4ed46869 224
37cdc7ad
KH		 225(defconst devanagari-composite-glyph-unit
226 (concat "\\(" devanagari-cons-syllable
227 "\\)\\|\\(" devanagari-vowel-syllable
228 "\\)\\|\\(" devanagari-digit-viram-visarga
229 "\\)\\|\\(" devanagari-cons-vowel-syllable
230 "\\)\\|\\(" devanagari-other-sign "\\)")
4ed46869
KH		 231 "Regexp matching to Devanagari string to be composed form one glyph.")
232
233;;(put-charset-property charset-devanagari-1-column
234;; 'char-to-glyph 'devanagari-compose-string)
235;;(put-charset-property charset-devanagari-2-column
236;; 'char-to-glyph 'devanagari-compose-string)
237
238;; Sample
239;;
37cdc7ad
KH		 240;;(string-match devanagari-cons-vowel-syllable-examine "\e$(5!X![\e(B") => 0
241;;(string-match devanagari-cons-vowel-syllable-examine "\e$(5!F!h!D!\\e(B") => 0
242;;(string-match devanagari-cons-vowel-syllable-examine "\e$(5!X![!F!h!D!\\e(B") => 0
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KH		 243
244;;
245;; Steps toward the composition
37cdc7ad 246;; Converting Character Codes to Composite Glyph.
4ed46869
KH		 247;;
248;; Example : \e$(5!X![\e(B/\e$(5!F!h!D!\\e(B
249;;
250;; First, convert Characters to appropriate glyphs.
251;;
252;; => \e$(5!X![\e(B/\e$(5"F!D!\\e(B
253;;
254;; Then, determine the base glyph, apply-orders and apply-rules.
255;;
256;; => \e$(5!X\e(B (ml.mr) \e$(5![\e(B / \e$(5!D\e(B (ml.mr) \e$(5"F\e(B (mr ml) \e$(5!\\e(B
257;;
258;; Finally, convert 2-column glyphs to 1-column glyph
259;; if such a glyph exist.
260;;
261;; => \e$(6![\e(B (ml.mr) \e$(6!X\e(B / \e$(6!D\e(B (ml.mr) \e$(6"F\e(B (mr ml) \e$(6!\\e(B
262;;
263;; Compose the glyph.
264;;
265;; => \e2\e$(6!X@![\e1\e(B/\e2\e$(6!D@"FP!\\e1\e(B
266;; => \e2\e$(6!X@![\e1\e2!D@"FP!\\e1\e(B
267;;
268
269;;
270;; Phase 1: Converting Character Code to Glyph Code.
271;;
272;;
273;; IMPORTANT:
274;; There may be many rules which you many want to be suppressed.
275;; In that case, please comment out that rule.
276;;
277;; RULES WILL BE EVALUATED FROM FIRST TO LAST.
278;; PUT MORE SPECIFIC RULES FIRST.
279;;
280;; TO DO:
281;; Prepare multiple specific list of rules for each languages
282;; which adopts Devanagari script.
283;;
284
285
286(defconst devanagari-char-to-glyph-rules
287 '(
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KH		 288
289 ;; `r' at the top of syllable and followed by other consonants.
37cdc7ad
KH		 290 ;; ("[^\e$(5!h\e(B]\\(\e$(5!O!h\e(B\\)[\e$(5!3\e(B-\e$(5!X\e(B]" "\e$(5"p\e(B")
291 ("^\\(\e$(5!O!h\e(B\\)[\e$(5!3\e(B-\e$(5!X\e(B]" "\e$(5"p\e(B")
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KH		 292
293 ;; Ligature Rules
37cdc7ad
KH		 294 ("\\(\e$(5!3!h!B!h!O!h!M\e(B\\)" "\e$(5$!\e(B" sanskrit)
295 ("\\(\e$(5!3!h!B!h!T\e(B\\)" "\e$(5$"\e(B" sanskrit)
296 ("\\(\e$(5!3!h!B!h!M\e(B\\)" "\e$(5$#\e(B" sanskrit)
297 ("\\(\e$(5!3!h!F!h!M\e(B\\)" "\e$(5$$\e(B")
298 ("\\(\e$(5!3!h!O!h!M\e(B\\)" "\e$(5$%\e(B")
299 ("\\(\e$(5!3!h!O\e(B\\)" "\e$(5"#\e(B") ; Post "r"
300 ("\\(\e$(5!3!h!T!h!M\e(B\\)" "\e$(5$&\e(B" sanskrit)
301 ("\\(\e$(5!3!h\e(B\\)\e$(5!3!h\e(B[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"3\e(B") ; Special Half Form
302 ("\\(\e$(5!3!h!3\e(B\\)" "\e$(5$'\e(B")
303 ("\\(\e$(5!3!h\e(B\\)\e$(5!B!h!O\e(B" "\e$(5"3\e(B") ; Special Rules for "k-tr"
304 ("\\(\e$(5!3!h!B\e(B\\)" "\e$(5$(\e(B")
305 ("\\(\e$(5!3!h!F\e(B\\)" "\e$(5$)\e(B")
306 ("\\(\e$(5!3!h!L\e(B\\)" "\e$(5$*\e(B")
307 ("\\(\e$(5!3!h!M\e(B\\)" "\e$(5$+\e(B")
308 ("\\(\e$(5!3!h!Q\e(B\\)" "\e$(5$,\e(B")
309 ("\\(\e$(5!3!h!T\e(B\\)" "\e$(5$-\e(B")
310 ("\\(\e$(5!3!h!V!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"l\e(B") ; Half Form
311 ("\\(\e$(5$.!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"l\e(B") ; Half Form
312 ("\\(\e$(5!3!h!V\e(B\\)" "\e$(5$.\e(B")
313 ("\\(\e$(5!3!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"3\e(B") ; Half Form
314 ("\\(\e$(5!3!i!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"s\e(B") ; Nukta Half Form
315 ("\\(\e$(5!3!i\e(B\\)" "\e$(5#3\e(B") ; Nukta
316 ("\\(\e$(5!4!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"4\e(B") ; Half Form
317 ("\\(\e$(5!4!i!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"t\e(B") ; Nukta Half Form
318 ("\\(\e$(5!4!i\e(B\\)" "\e$(5#4\e(B") ; Nukta
319 ("\\(\e$(5!5!h!O!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"`\e(B") ; Half Form
320 ("\\(\e$(5!5!h!O\e(B\\)" "\e$(5"$\e(B") ; Post "r"
321 ("\\(\e$(5!5!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"5\e(B") ; Half Form
322 ("\\(\e$(5!5!i!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"u\e(B") ; Nukta Half Form
323 ("\\(\e$(5!5!i\e(B\\)" "\e$(5#5\e(B") ; Nukta
324 ("\\(\e$(5!6!h!F!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"a\e(B") ; Half Form
325 ("\\(\e$(5!6!h!F\e(B\\)" "\e$(5$/\e(B")
326 ; Slot
327 ("\\(\e$(5!6!h!O\e(B\\)" "\e$(5!6"q\e(B") ; Post "r"
328 ("\\(\e$(5!6!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"6\e(B") ; Half Form
329 ("\\(\e$(5!7!h!3!h!B!h!M\e(B\\)" "\e$(5$0\e(B" sanskrit)
330 ("\\(\e$(5!7!h!3!h!V!h!T\e(B\\)" "\e$(5$1\e(B" sanskrit)
331 ("\\(\e$(5!7!h!3!h!B\e(B\\)" "\e$(5$2\e(B" sanskrit)
332 ("\\(\e$(5!7!h!3!h!V\e(B\\)" "\e$(5$3\e(B" sanskrit)
333 ("\\(\e$(5!7!h!3!h!O\e(B\\)" "\e$(5$9"q\e(B") ; Special Rule. May be precomposed font needed.
334 ("\\(\e$(5!7!h!6!h!O\e(B\\)" "\e$(5$4\e(B" sanskrit)
335 ("\\(\e$(5!7!h!3!h!M\e(B\\)" "\e$(5$5\e(B" sanskrit)
336 ("\\(\e$(5!7!h!4!h!M\e(B\\)" "\e$(5$6\e(B" sanskrit)
337 ("\\(\e$(5!7!h!5!h!M\e(B\\)" "\e$(5$7\e(B" sanskrit)
338 ("\\(\e$(5!7!h!6!h!M\e(B\\)" "\e$(5$8\e(B" sanskrit)
339 ("\\(\e$(5!7!h!3\e(B\\)" "\e$(5$9\e(B")
340 ("\\(\e$(5!7!h!4\e(B\\)" "\e$(5$:\e(B")
341 ("\\(\e$(5!7!h!5!h!O\e(B\\)" "\e$(5$;"q\e(B") ; Special Rule. May be precomposed font needed.
342 ("\\(\e$(5!7!h!5\e(B\\)" "\e$(5$;\e(B")
343 ("\\(\e$(5!7!h!6\e(B\\)" "\e$(5$<\e(B")
344 ("\\(\e$(5!7!h!7\e(B\\)" "\e$(5$=\e(B")
345 ("\\(\e$(5!7!h!F\e(B\\)" "\e$(5$>\e(B")
346 ("\\(\e$(5!7!h!L\e(B\\)" "\e$(5$?\e(B")
347 ("\\(\e$(5!7!h!M\e(B\\)" "\e$(5$@\e(B")
348 ("\\(\e$(5!8!h\e(B\\)[\e$(5!8!<\e(B]\e$(5!h\e(B" "\e$(5"8\e(B") ; Half Form
349 ("\\(\e$(5!8!h!8\e(B\\)" "\e$(5$A\e(B")
350 ("\\(\e$(5!8!h!<\e(B\\)" "\e$(5$B\e(B")
351 ("\\(\e$(5!8!h!O!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"8"q\e(B") ; Half Form Post "r"
352 ("\\(\e$(5!8!h!O\e(B\\)" "\e$(5!8"q\e(B") ; Post "r"
353 ("\\(\e$(5!8!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"8\e(B") ; Half Form
354 ("\\(\e$(5!9!h!M\e(B\\)" "\e$(5$C\e(B")
355 ("\\(\e$(5!:!h!O\e(B\\)" "\e$(5$D\e(B")
356 ("\\(\e$(5!:!h!<!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"m\e(B") ; Half Form
357 ("\\(\e$(5!:!h!<\e(B\\)" "\e$(5$E\e(B")
358 ("\\(\e$(5!:!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5":\e(B") ; Half Form
359 ("\\(\e$(5!:!i!h!O\e(B\\)" "\e$(5"!\e(B") ; Nukta Post "r"
360 ("\\(\e$(5!:!i!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"z\e(B") ; Nukta Half Form
361 ("\\(\e$(5!:!i\e(B\\)" "\e$(5#:\e(B") ; Nukta
362 ("\\(\e$(5!;!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5";\e(B") ; Half Form
363 ("\\(\e$(5!<!h\e(B\\)\e$(5!8!h\e(B[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"<\e(B") ; Special Half Form
364 ("\\(\e$(5!<!h!8\e(B\\)" "\e$(5$F\e(B")
365 ("\\(\e$(5!<!h\e(B\\)\e$(5!:!h\e(B[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"<\e(B") ; Special Half Form
366 ("\\(\e$(5!<!h!:\e(B\\)" "\e$(5$G\e(B")
367 ("\\(\e$(5!<!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"<\e(B") ; Half Form
368 ("\\(\e$(5!=!h!3\e(B\\)" "\e$(5$H\e(B")
369 ("\\(\e$(5!=!h!=\e(B\\)" "\e$(5$I\e(B")
370 ("\\(\e$(5!=!h!>\e(B\\)" "\e$(5$J\e(B")
371 ("\\(\e$(5!=!h!M\e(B\\)" "\e$(5$K\e(B")
372 ("\\(\e$(5!>!h!M\e(B\\)" "\e$(5$L\e(B")
373 ("\\(\e$(5!?!h!5!h!M\e(B\\)" "\e$(5$M\e(B" sanskrit)
374 ("\\(\e$(5!?!h!6!h!O\e(B\\)" "\e$(5$N\e(B" sanskrit)
375 ("\\(\e$(5!?!h!O!h!M\e(B\\)" "\e$(5$O\e(B")
376 ("\\(\e$(5!?!h!5\e(B\\)" "\e$(5$P\e(B")
377 ("\\(\e$(5!?!h!6\e(B\\)" "\e$(5$Q\e(B")
378 ("\\(\e$(5!?!h!?\e(B\\)" "\e$(5$R\e(B")
379 ("\\(\e$(5!?!h!L\e(B\\)" "\e$(5$S\e(B")
380 ("\\(\e$(5!?!h!M\e(B\\)" "\e$(5$T\e(B")
381 ("\\(\e$(5!?!i\e(B\\)" "\e$(5#?\e(B") ; Nukta
382 ("\\(\e$(5!@!h!M\e(B\\)" "\e$(5$`\e(B")
383 ("\\(\e$(5!@!i\e(B\\)" "\e$(5#@\e(B") ; Nukta
384 ("\\(\e$(5!A!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"A\e(B") ; Half Form
385 ("\\(\e$(5!B!h\e(B\\)\e$(5!B!h!O\e(B" "\e$(5"B\e(B") ; Special Rule for "t-tr"
386 ("\\(\e$(5!B!h!B!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"c\e(B") ; Half Form
387 ("\\(\e$(5!B!h!B\e(B\\)" "\e$(5$a\e(B")
388 ("\\(\e$(5!B!h!F\e(B\\)" "\e$(5$b\e(B")
389 ("\\(\e$(5!B!h!O!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"d\e(B") ; Half Form Post "r"
390 ("\\(\e$(5!B!h!O\e(B\\)" "\e$(5"%\e(B") ; Post "r"
391 ("\\(\e$(5!B!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"B\e(B") ; Half Form
392 ("\\(\e$(5!C!h!O\e(B\\)" "\e$(5!C"q\e(B") ; Post "r"
393 ("\\(\e$(5!C!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"C\e(B") ; Half Form
394 ("\\(\e$(5!D!h!D!h!M\e(B\\)" "\e$(5$c\e(B")
395 ("\\(\e$(5!D!h!E!h!M\e(B\\)" "\e$(5$d\e(B")
396 ("\\(\e$(5!D!h!K!h!M\e(B\\)" "\e$(5$e\e(B")
397 ("\\(\e$(5!D!h!K!h!O\e(B\\)" "\e$(5$r"r\e(B") ; Special Case for "dbhr" ; ***
398 ("\\(\e$(5!D!h!O!h!M\e(B\\)" "\e$(5$f\e(B")
399 ("\\(\e$(5!D!h!T!h!M\e(B\\)" "\e$(5$g\e(B")
400 ("\\(\e$(5!D!h!5!h!O\e(B\\)" "\e$(5$h\e(B")
401 ("\\(\e$(5!D!h!6!h!O\e(B\\)" "\e$(5$i\e(B")
402 ("\\(\e$(5!D!h!D!h!T\e(B\\)" "\e$(5$j\e(B")
403 ("\\(\e$(5!D!h!E!h!T\e(B\\)" "\e$(5$k\e(B")
404 ("\\(\e$(5!D!h\e(B\\)\e$(5!E!h\e(B[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5!D!h\e(B") ; Special Half Form (for ddhra)
405 ("\\(\e$(5!D!h!5\e(B\\)" "\e$(5$l\e(B")
406 ("\\(\e$(5!D!h!6\e(B\\)" "\e$(5$m\e(B")
407 ("\\(\e$(5!D!h!D\e(B\\)" "\e$(5$n\e(B")
408 ("\\(\e$(5!D!h!E\e(B\\)" "\e$(5$o\e(B")
409 ("\\(\e$(5!D!h!F\e(B\\)" "\e$(5$p\e(B")
410 ("\\(\e$(5!D!h\e(B\\)\e$(5!J!h\e(B" "\e$(5!D!h\e(B") ; Suppressing "db-"
411 ("\\(\e$(5!D!h!J\e(B\\)" "\e$(5$q\e(B")
412 ("\\(\e$(5!D!h!K\e(B\\)" "\e$(5$r\e(B")
413 ("\\(\e$(5!D!h!L\e(B\\)" "\e$(5$s\e(B")
414 ("\\(\e$(5!D!h!M\e(B\\)" "\e$(5$t\e(B")
415 ("\\(\e$(5!D!h!T\e(B\\)" "\e$(5$u\e(B")
416 ("\\(\e$(5!E!h!F!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"e\e(B") ; Half Form
417 ("\\(\e$(5!E!h!F\e(B\\)" "\e$(5$v\e(B")
418 ("\\(\e$(5!E!h!O!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"f\e(B") ; Half Form Post "r"
419 ("\\(\e$(5!E!h!O\e(B\\)" "\e$(5!E"q\e(B") ; Post "r"
420 ("\\(\e$(5!E!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"E\e(B") ; Half Form
421 ("\\(\e$(5!F!h!F!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"k\e(B") ; Half Form
422 ("\\(\e$(5!F!h!F\e(B\\)" "\e$(5$w\e(B")
423 ("\\(\e$(5!F!h!O\e(B\\)" "\e$(5!F"q\e(B")
424 ("\\(\e$(5!F!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"F\e(B") ; Half Form
425 ("\\(\e$(5!G!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"G\e(B") ; Nukta Half Form
426 ("\\(\e$(5!H!h\e(B\\)\e$(5!B!h!O\e(B" "\e$(5"H\e(B") ; Special Rule for "p-tr"
427 ("\\(\e$(5!H!h!B!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"g\e(B") ; Half Form
428 ("\\(\e$(5!H!h!B\e(B\\)" "\e$(5$x\e(B")
429 ("\\(\e$(5!H!h!F\e(B\\)" "\e$(5$y\e(B")
430 ("\\(\e$(5!H!h!Q\e(B\\)" "\e$(5$z\e(B")
431 ("\\(\e$(5!H!h!O\e(B\\)" "\e$(5"&\e(B") ; Post "r"
432 ("\\(\e$(5!H!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"H\e(B") ; Half Form
433 ("\\(\e$(5!I!h!O\e(B\\)" "\e$(5"'\e(B") ; Post "r"
434 ("\\(\e$(5!I!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"I\e(B") ; Half Form
435 ("\\(\e$(5!I!i!h!O\e(B\\)" "\e$(5""\e(B") ; Nukta Post "r"
436 ("\\(\e$(5!I!i!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"y\e(B") ; Nukta Half Form
437 ("\\(\e$(5!I!i\e(B\\)" "\e$(5#I\e(B") ; Nukta
438 ("\\(\e$(5!J!h\e(B\\)\e$(5!F!h\e(B[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"J\e(B") ; Special Half Form
439 ("\\(\e$(5!J!h!F\e(B\\)" "\e$(5${\e(B")
440 ("\\(\e$(5!J!h\e(B\\)\e$(5!J!h\e(B[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"J\e(B") ; Special Half Form
441 ("\\(\e$(5!J!h!J\e(B\\)" "\e$(5$|\e(B")
442 ("\\(\e$(5!J!h\e(B\\)\e$(5!T!h\e(B[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"J\e(B") ; Special Half Form
443 ("\\(\e$(5!J!h!T\e(B\\)" "\e$(5$}\e(B")
444 ("\\(\e$(5!J!h!O\e(B\\)" "\e$(5!J"q\e(B") ; Post "r"
445 ("\\(\e$(5!J!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"J\e(B") ; Half Form
446 ("\\(\e$(5!K!h!F\e(B\\)" "\e$(5$~\e(B")
447 ("\\(\e$(5!K!h!O\e(B\\)" "\e$(5!K"q\e(B") ; Post "r"
448 ("\\(\e$(5!K!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"K\e(B") ; Half Form
449 ("\\(\e$(5!L!h!F\e(B\\)" "\e$(5#P\e(B")
450 ("\\(\e$(5!L!h!Q\e(B\\)" "\e$(5#Q\e(B")
451 ("\\(\e$(5!L!h!O\e(B\\)" "\e$(5!L"q\e(B") ; Post "r"
452 ("\\(\e$(5!L!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"L\e(B") ; Half Form
453 ("\\(\e$(5!M!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"M\e(B") ; Half Form
454 ("\\(\e$(5!N!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"N\e(B") ; Half Form
455 ;; special form for "ru".
456 ("\\(\e$(5!O!]\e(B\\)" "\e$(5",\e(B")
457 ("\\(\e$(5!O!^\e(B\\)" "\e$(5"-\e(B")
458 ("\\(\e$(5!P!]\e(B\\)" "\e$(5".\e(B")
459 ("\\(\e$(5!P!^\e(B\\)" "\e$(5"/\e(B")
4ed46869 460 ;;
37cdc7ad
KH		 461 ("\\(\e$(5!Q!h!Q\e(B\\)" "\e$(5#`\e(B" sanskrit)
462 ("\\(\e$(5!Q!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"Q\e(B") ; Half Form
463 ("\\(\e$(5!R!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"R\e(B") ; Half Form
464 ("\\(\e$(5!S!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"S\e(B") ; Half Form
465 ("\\(\e$(5!T!h!F\e(B\\)" "\e$(5#a\e(B")
466 ("\\(\e$(5!T!h!T\e(B\\)" "\e$(5#b\e(B")
467 ("\\(\e$(5!T!h!O\e(B\\)" "\e$(5!T"q\e(B") ; Post "r"
468 ("\\(\e$(5!T!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"T\e(B") ; Half Form
469 ("\\(\e$(5!U!h!8!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"h\e(B") ; Half Form
470 ("\\(\e$(5!U!h!8\e(B\\)" "\e$(5#c\e(B")
471 ("\\(\e$(5!U!h!F\e(B\\)" "\e$(5#d\e(B")
472 ("\\(\e$(5!U!h!J\e(B\\)" "\e$(5#e\e(B")
473 ("\\(\e$(5!U!h!Q\e(B\\)" "\e$(5#f\e(B")
474 ("\\(\e$(5!U!h\e(B\\)\e$(5!T!h!O\e(B" "\e$(5"U\e(B") ; Special Half Form
475 ("\\(\e$(5!U!h!T!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"j\e(B") ; Half Form
476; ("\\(\e$(5!U!h!T\e(B\\)" "\e$(5#g\e(B")
477 ("\\(\e$(5!U!h!O!h!T\e(B\\)" "\e$(5#g\e(B")
478 ("\\(\e$(5!U!h!O!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"i\e(B") ; Half Form
479 ("\\(\e$(5!U!h!O\e(B\\)" "\e$(5")\e(B") ; Post "r"
480 ("\\(\e$(5!U!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"U\e(B") ; Half Form
481 ("\\(\e$(5!V!h!=!h!O!h!M\e(B\\)" "\e$(5#h\e(B")
482 ("\\(\e$(5!V!h!=!h!M\e(B\\)" "\e$(5#i\e(B")
483 ("\\(\e$(5!V!h!=!h!T\e(B\\)" "\e$(5#j\e(B")
484 ("\\(\e$(5!V!h!=\e(B\\)" "\e$(5#k\e(B")
485 ("\\(\e$(5!V!h!>\e(B\\)" "\e$(5#l\e(B")
486 ("\\(\e$(5!V!h!O\e(B\\)" "\e$(5!V"q\e(B") ; Post "r"
487 ("\\(\e$(5!V!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"V\e(B") ; Half Form
488 ("\\(\e$(5!W!h!F!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"W"F\e(B") ; Special Half Form
489 ("\\(\e$(5!W!h!F\e(B\\)" "\e$(5#m\e(B")
490 ("\\(\e$(5!W!h!O\e(B\\)" "\e$(5#n\e(B")
491 ("\\(\e$(5!W!h\e(B\\)[\e$(5!3\e(B-\e$(5!N!P\e(B-\e$(5!X\e(B]" "\e$(5"W\e(B") ; Half Form
492 ("\\(\e$(5!X!h!A\e(B\\)" "\e$(5#p\e(B")
493 ("\\(\e$(5!X!h!F\e(B\\)" "\e$(5#q\e(B")
494 ("\\(\e$(5!X!h!L\e(B\\)" "\e$(5#r\e(B")
495 ("\\(\e$(5!X!h!M\e(B\\)" "\e$(5#s\e(B")
496 ("\\(\e$(5!X!h!O\e(B\\)" "\e$(5#t\e(B")
497 ("\\(\e$(5!X!h!Q\e(B\\)" "\e$(5#u\e(B")
498 ("\\(\e$(5!X!h!T\e(B\\)" "\e$(5#v\e(B")
499 ;; Special Ligature Rules
500 ("\\(\e$(5!X!_\e(B\\)" "\e$(5#R\e(B")
4ed46869
KH		 501
502 ;; For consonants other than listed above, glyph-composition will
503 ;; be applied. If the consonant which is preceding "\e$(5!O\e(B" does not
504 ;; have the vertical line (such as "\e$(5!?\e(B"), "\e$(5"r\e(B" is put beneath the
505 ;; consonant.
506 ;;
37cdc7ad
KH		 507 ("[\e$(5!7!9!=!>!?!@!D!O!P!R!S!X\e(B]\\(\e$(5!h!O\e(B\\)" "\e$(5"r\e(B")
508 ("[\e$(5!6!8!C!E!F!H!J!K!L!M!T!V\e(B]\\(\e$(5!h!O\e(B\\)" "\e$(5"q\e(B")
509 ("\e$(5!?!i\e(B\\(\e$(5!h!O\e(B\\)" "\e$(5"r\e(B")
510 ("\e$(5!@!i\e(B\\(\e$(5!h!O\e(B\\)" "\e$(5"r\e(B")
511
512 ;; Nukta with Non-Consonants
513 ("\\(\e$(5!!!i\e(B\\)" "\e$(5#!\e(B")
514 ("\\(\e$(5!&!i\e(B\\)" "\e$(5#&\e(B")
515 ("\\(\e$(5!'!i\e(B\\)" "\e$(5#'\e(B")
516 ("\\(\e$(5!*!i\e(B\\)" "\e$(5#*\e(B")
517 ("\\(\e$(5![!i\e(B\\)" "\e$(5#L\e(B")
518 ("\\(\e$(5!\!i\e(B\\)" "\e$(5#M\e(B")
519 ("\\(\e$(5!_!i\e(B\\)" "\e$(5#K\e(B")
520 ("\\(\e$(5!j!i\e(B\\)" "\e$(5#J\e(B")
521
522 ;; Special rule for "r + some vowels"
523 ("\\(\e$(5!O!_\e(B\\)" "\e$(5!*"p\e(B")
524 ("\\(\e$(5!O#L\e(B\\)" "\e$(5#&"p\e(B")
525 ("\\(\e$(5!O#K\e(B\\)" "\e$(5#*"p\e(B")
526 ("\\(\e$(5!O#M\e(B\\)" "\e$(5#'"p\e(B")
bd09f27b 527 ;; If everything fails, "y" will connect to the front consonant.
37cdc7ad 528 ("\\(\e$(5!h!M\e(B\\)" "\e$(5"]\e(B")
4ed46869
KH		 529 )
530 "Alist of regexps of Devanagari character sequences vs composed characters.")
531
4ed46869
KH		 532(let ((rules devanagari-char-to-glyph-rules))
533 (while rules
534 (let ((rule (car rules))
37cdc7ad 535 (chars) (char) (glyphs) (glyph))
4ed46869
KH		 536 (setq rules (cdr rules))
537 (string-match "\\\\(\\(.+\\)\\\\)" (car rule))
538 (setq chars (substring (car rule) (match-beginning 1) (match-end 1)))
539 (setq char (string-to-char chars))
37cdc7ad
KH		 540 (setq glyphs (cdr rule))
541 (setq glyph (string-to-char (car glyphs)))
4ed46869 542 (put-char-code-property
37cdc7ad
KH		 543 char 'char-to-glyph
544 ;; We don't "cons" it since priority is top to down.
545 (append (get-char-code-property char 'char-to-glyph) (list rule)))
546
547 (if (and (< ?\e(5z\e(B glyph) ; Glyphs only.
548 (null (get-char-code-property glyph 'glyph-to-char)))
549 ; One glyph may corresponds to multiple characters,
550 ; e.g., surrounding vowel in Tamil, etc.
551 ; but for Devanagari, we put this restriction
552 ; to make sure the fact that one glyph corresponds to one char.
553 (put-char-code-property
554 glyph 'glyph-to-char
555 (cons (list (car glyphs) chars)
556 (get-char-code-property glyph 'glyph-to-char)
557 ))))))
4ed46869
KH		 558
559;;
37cdc7ad
KH		 560;; Function used in both characters-to-glyphs conversion and
561;; glyphs-to-characters conversion.
4ed46869
KH		 562;;
563
37cdc7ad
KH		 564(defun max-match-len (regexp-str)
565 "This returns the possible length of matched string of given regexp.
566 Only [...] pattern of regexp is recognized. The last character of
567 inside of [....] is used for its length."
568 (let ((dest-str regexp-str))
569 (while (string-match "\\[\\([^\]]\\)+\\]" dest-str)
570 (setq dest-str
571 (concat (substring dest-str 0 (match-beginning 0))
572 (substring dest-str (match-beginning 1) (match-end 1))
573 (substring dest-str (match-end 0)))))
574 (length dest-str)))
575
576(defun string-conversion-by-rule (src-str symbol &rest specs)
577 " This function converts the SRC-STR to the new string according to
578the rules described in the each character's SYMBOL property. The
579rules are described in the forms of '((regexp str <specs>) ...), and
580the character sequence in the string which matches to 'regexp' are
581replaced with str. If SPECS are not specified, only rules with no
582<specs> would be applied. If SPECS are specified, then rules with no
583<specs> specified and rules with <spec> matches with SPECS would be
584applied. Rules are tested in the order of the list, thus more
585specific rules should be placed in front of less important rules. No
586composite character is supported, thus such must be converted by
587decompose-char before applying to this function. If rule is given in
588the forms of regexp '...\\(...\\)...', then inside the parenthesis is
589the subject of the match. Otherwise, the entire expression is the
590subject of the match."
4ed46869
KH		 591 (let ((pos 0)
592 (dst-str ""))
593 (while (< pos (length src-str))
594 (let ((found nil)
595 (rules (get-char-code-property
596 (string-to-char
37cdc7ad 597 (substring src-str pos)) symbol)))
4ed46869
KH		 598 (while rules
599 (let* ((rule (car rules))
37cdc7ad
KH		 600 (regexp (car rule))
601 (replace-str (car (cdr rule)))
602 (rule-specs (cdr (cdr rule)))
603 search-pos)
604 (if (not (or (null rule-specs)
605 (intersection specs rule-specs)))
606 (setq rules (cdr rules))
607 (if (null (string-match "\\\\(.+\\\\)" regexp))
608 (progn
609 (setq regexp (concat "\\(" regexp "\\)"))
610 (setq search-pos pos))
611 (setq search-pos (- pos (max-match-len
612 (substring regexp
613 (string-match "^[^\\\\]*" regexp)
614 (match-end 0))))))
615 (if (< search-pos 0) (setq search-pos 0))
616 (if (string-match regexp src-str search-pos)
617 (if (= (match-beginning 1) pos)
618 (progn
619 (setq dst-str (concat dst-str replace-str))
620 (setq rules nil) ; Get out of the loop.
621 (setq found t)
622 ;; proceed `pos' for replaced characters.
623 (setq pos (match-end 1)))
624 (setq rules (cdr rules)))
625 (setq rules (cdr rules))))))
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KH		 626 ;; proceed to next position
627 (if (not found)
628 (let ((nextchar (string-to-char (substring src-str pos))))
629 (setq pos (+ pos
630 (char-bytes (string-to-char (substring src-str pos)))))
631 (setq dst-str (concat dst-str (char-to-string nextchar)))))))
632 dst-str))
633
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KH		 634
635;;
636;; Convert Character Code to Glyph Code
637;;
638
639;;;###autoload
640(defun char-to-glyph-devanagari (src-str &rest langs)
641 "Convert Devanagari characters in the string to Devanagari glyphs.
642Ligatures and special rules are processed."
643 (apply
644 'string-conversion-by-rule
645 (append (list src-str 'char-to-glyph) langs)))
646
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KH		 647;; Example:
648;;(char-to-glyph-devanagari "\e$(5!X![!F!h!D!\\e(B") => "\e$(5!X!["F!D!\\e(B"
649;;(char-to-glyph-devanagari "\e$(5!O!Z!V!h!=!h!O![!M\e(B") => ???
650
651;;
652;; Phase 2: Compose Glyphs to form One Glyph.
653;;
654
655;; Each list consist of glyph, application-priority and application-direction.
656;;
657;; Glyphs will be ordered from low priority number to high priority number.
658;; If application-priority is omitted, it is assumed to be 0.
659;; If application-direction is omitted, it is asumbed to be '(mr . ml).
660
661(defconst devanagari-composition-rules
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KH		 662 '((?\e$(5!!\e(B 0 (tr . br))
663 (?\e$(5!"\e(B 0 (mr . mr))
664 (?\e$(5!#\e(B 0)
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KH		 665 (?\e$(5!$\e(B 0)
666 (?\e$(5!%\e(B 0)
667 (?\e$(5!&\e(B 0)
668 (?\e$(5!'\e(B 0)
669 (?\e$(5!(\e(B 0)
670 (?\e$(5!)\e(B 0)
671 (?\e$(5!*\e(B 0)
672 (?\e$(5!+\e(B 0)
673 (?\e$(5!,\e(B 0)
674 (?\e$(5!-\e(B 0)
675 (?\e$(5!.\e(B 0)
676 (?\e$(5!/\e(B 0)
677 (?\e$(5!0\e(B 0)
678 (?\e$(5!1\e(B 0)
679 (?\e$(5!2\e(B 0)
680 (?\e$(5!3\e(B 0)
681 (?\e$(5!4\e(B 0)
682 (?\e$(5!5\e(B 0)
683 (?\e$(5!6\e(B 0)
684 (?\e$(5!7\e(B 0)
685 (?\e$(5!8\e(B 0)
686 (?\e$(5!9\e(B 0)
687 (?\e$(5!:\e(B 0)
688 (?\e$(5!;\e(B 0)
689 (?\e$(5!<\e(B 0)
690 (?\e$(5!=\e(B 0)
691 (?\e$(5!>\e(B 0)
692 (?\e$(5!?\e(B 0)
693 (?\e$(5!@\e(B 0)
694 (?\e$(5!A\e(B 0)
695 (?\e$(5!B\e(B 0)
696 (?\e$(5!C\e(B 0)
697 (?\e$(5!D\e(B 0)
698 (?\e$(5!E\e(B 0)
699 (?\e$(5!F\e(B 0)
700 (?\e$(5!G\e(B 0)
701 (?\e$(5!H\e(B 0)
702 (?\e$(5!I\e(B 0)
703 (?\e$(5!J\e(B 0)
704 (?\e$(5!K\e(B 0)
705 (?\e$(5!L\e(B 0)
706 (?\e$(5!M\e(B 0)
707 (?\e$(5!N\e(B 0)
708 (?\e$(5!O\e(B 0)
709 (?\e$(5!P\e(B 0)
710 (?\e$(5!Q\e(B 0)
711 (?\e$(5!R\e(B 0)
712 (?\e$(5!S\e(B 0)
713 (?\e$(5!T\e(B 0)
714 (?\e$(5!U\e(B 0)
715 (?\e$(5!V\e(B 0)
716 (?\e$(5!W\e(B 0)
717 (?\e$(5!X\e(B 0)
718 (?\e$(5!Y\e(B 0)
37cdc7ad
KH		 719 (?\e$(5!Z\e(B 0)
720 (?\e$(5![\e(B 0 (ml . mr))
721 (?\e$(5!\\e(B 0)
722 (?\e$(5!]\e(B 0 (br . tr))
723 (?\e$(5!^\e(B 0 (br . tr))
724 (?\e$(5!_\e(B 0 (br . tr))
725 (?\e$(5!`\e(B 0 (mr . mr)) ; (tc . bc)
726 (?\e$(5!a\e(B 0 (mr . mr))
727 (?\e$(5!b\e(B 0 (mr . mr))
728 (?\e$(5!c\e(B 0 (mr . mr))
729 (?\e$(5!d\e(B 0)
730 (?\e$(5!e\e(B 0)
731 (?\e$(5!f\e(B 0)
732 (?\e$(5!g\e(B 0)
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KH		 733 (?\e$(5!h\e(B 0 (br . tr))
734 (?\e$(5!i\e(B 0 (br . tr))
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KH		 735 (?\e$(5!j\e(B 0)
736 (nil 0)
737 (nil 0)
738 (nil 0)
739 (nil 0)
740 (nil 0)
741 (nil 0)
742 (?\e$(5!q\e(B 0)
743 (?\e$(5!r\e(B 0)
744 (?\e$(5!s\e(B 0)
745 (?\e$(5!t\e(B 0)
746 (?\e$(5!u\e(B 0)
747 (?\e$(5!v\e(B 0)
748 (?\e$(5!w\e(B 0)
749 (?\e$(5!x\e(B 0)
750 (?\e$(5!y\e(B 0)
751 (?\e$(5!z\e(B 0)
752 (nil 0)
753 (nil 0)
754 (nil 0)
755 (nil 0)
756 (?\e$(5"!\e(B 0)
757 (?\e$(5""\e(B 0)
758 (?\e$(5"#\e(B 0)
759 (?\e$(5"$\e(B 0)
760 (?\e$(5"%\e(B 0)
761 (?\e$(5"&\e(B 0)
762 (?\e$(5"'\e(B 0)
763 (?\e$(5"(\e(B 0)
764 (?\e$(5")\e(B 0)
765 (?\e$(5"*\e(B 0)
766 (?\e$(5"+\e(B 0)
767 (?\e$(5",\e(B 0)
768 (?\e$(5"-\e(B 0)
769 (?\e$(5".\e(B 0)
770 (?\e$(5"/\e(B 0)
771 (?\e$(5"0\e(B 0)
772 (?\e$(5"1\e(B 0)
773 (?\e$(5"2\e(B 0)
774 (?\e$(5"3\e(B 0)
775 (?\e$(5"4\e(B 0)
776 (?\e$(5"5\e(B 0)
777 (?\e$(5"6\e(B 0)
778 (?\e$(5"7\e(B 0)
779 (?\e$(5"8\e(B 0)
780 (?\e$(5"9\e(B 0)
781 (?\e$(5":\e(B 0)
782 (?\e$(5";\e(B 0)
783 (?\e$(5"<\e(B 0)
784 (?\e$(5"=\e(B 0)
785 (?\e$(5">\e(B 0)
786 (?\e$(5"?\e(B 0)
787 (?\e$(5"@\e(B 0)
788 (?\e$(5"A\e(B 0)
789 (?\e$(5"B\e(B 0)
790 (?\e$(5"C\e(B 0)
791 (?\e$(5"D\e(B 0)
792 (?\e$(5"E\e(B 0)
793 (?\e$(5"F\e(B 0)
794 (?\e$(5"G\e(B 0)
795 (?\e$(5"H\e(B 0)
796 (?\e$(5"I\e(B 0)
797 (?\e$(5"J\e(B 0)
798 (?\e$(5"K\e(B 0)
799 (?\e$(5"L\e(B 0)
800 (?\e$(5"M\e(B 0)
801 (?\e$(5"N\e(B 0)
802 (?\e$(5"O\e(B 0)
803 (?\e$(5"P\e(B 0)
804 (?\e$(5"Q\e(B 0)
805 (?\e$(5"R\e(B 0)
806 (?\e$(5"S\e(B 0)
807 (?\e$(5"T\e(B 0)
808 (?\e$(5"U\e(B 0)
809 (?\e$(5"V\e(B 0)
810 (?\e$(5"W\e(B 0)
811 (?\e$(5"X\e(B 0)
812 (?\e$(5"Y\e(B 0)
813 (?\e$(5"Z\e(B 0)
814 (?\e$(5"[\e(B 0)
815 (?\e$(5"\\e(B 0)
816 (?\e$(5"]\e(B 0)
817 (?\e$(5"^\e(B 0)
818 (?\e$(5"_\e(B 0)
819 (?\e$(5"`\e(B 0)
820 (?\e$(5"a\e(B 0)
821 (?\e$(5"b\e(B 0)
822 (?\e$(5"c\e(B 0)
823 (?\e$(5"d\e(B 0)
824 (?\e$(5"e\e(B 0)
825 (?\e$(5"f\e(B 0)
826 (?\e$(5"g\e(B 0)
827 (?\e$(5"h\e(B 0)
828 (?\e$(5"i\e(B 0)
829 (?\e$(5"j\e(B 0)
830 (?\e$(5"k\e(B 0)
831 (?\e$(5"l\e(B 0)
832 (?\e$(5"m\e(B 0)
833 (?\e$(5"n\e(B 0)
834 (?\e$(5"o\e(B 0)
37cdc7ad
KH		 835 (?\e$(5"p\e(B 10 (mr . mr))
836 (?\e$(5"q\e(B 0 (br . br))
837 (?\e$(5"r\e(B 0 (br . tr))
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KH		 838 (?\e$(5"s\e(B 0)
839 (?\e$(5"t\e(B 0)
840 (?\e$(5"u\e(B 0)
841 (?\e$(5"v\e(B 0)
842 (?\e$(5"w\e(B 0)
843 (?\e$(5"x\e(B 0)
844 (?\e$(5"y\e(B 0)
845 (?\e$(5"z\e(B 0)
846 (?\e$(5"{\e(B 0)
847 (?\e$(5"|\e(B 0)
848 (?\e$(5"}\e(B 0)
849 (?\e$(5"~\e(B 0)
850 (?\e$(5#!\e(B 0)
851 (?\e$(5#"\e(B 0)
852 (?\e$(5##\e(B 0)
853 (?\e$(5#$\e(B 0)
854 (?\e$(5#%\e(B 0)
855 (?\e$(5#&\e(B 0)
856 (?\e$(5#'\e(B 0)
857 (?\e$(5#(\e(B 0)
858 (?\e$(5#)\e(B 0)
859 (?\e$(5#*\e(B 0)
860 (?\e$(5#+\e(B 0)
861 (?\e$(5#,\e(B 0)
862 (?\e$(5#-\e(B 0)
863 (?\e$(5#.\e(B 0)
864 (?\e$(5#/\e(B 0)
865 (?\e$(5#0\e(B 0)
866 (?\e$(5#1\e(B 0)
867 (?\e$(5#2\e(B 0)
868 (?\e$(5#3\e(B 0)
869 (?\e$(5#4\e(B 0)
870 (?\e$(5#5\e(B 0)
871 (?\e$(5#6\e(B 0)
872 (?\e$(5#7\e(B 0)
873 (?\e$(5#8\e(B 0)
874 (?\e$(5#9\e(B 0)
875 (?\e$(5#:\e(B 0)
876 (?\e$(5#;\e(B 0)
877 (?\e$(5#<\e(B 0)
878 (?\e$(5#=\e(B 0)
879 (?\e$(5#>\e(B 0)
880 (?\e$(5#?\e(B 0)
881 (?\e$(5#@\e(B 0)
882 (?\e$(5#A\e(B 0)
883 (?\e$(5#B\e(B 0)
884 (?\e$(5#C\e(B 0)
885 (?\e$(5#D\e(B 0)
886 (?\e$(5#E\e(B 0)
887 (?\e$(5#F\e(B 0)
888 (?\e$(5#G\e(B 0)
889 (?\e$(5#H\e(B 0)
890 (?\e$(5#I\e(B 0)
891 (?\e$(5#J\e(B 0)
37cdc7ad
KH		 892 (?\e$(5#K\e(B 0 (br . tr))
893 (?\e$(5#L\e(B 0 (br . tr))
894 (?\e$(5#M\e(B 0 (br . tr))
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KH		 895 (?\e$(5#N\e(B 0)
896 (?\e$(5#O\e(B 0)
897 (?\e$(5#P\e(B 0)
898 (?\e$(5#Q\e(B 0)
899 (?\e$(5#R\e(B 0)
900 (?\e$(5#S\e(B 0)
901 (?\e$(5#T\e(B 0)
902 (?\e$(5#U\e(B 0)
903 (?\e$(5#V\e(B 0)
904 (?\e$(5#W\e(B 0)
905 (?\e$(5#X\e(B 0)
906 (?\e$(5#Y\e(B 0)
907 (?\e$(5#Z\e(B 0)
908 (?\e$(5#[\e(B 0)
909 (?\e$(5#\\e(B 0)
910 (?\e$(5#]\e(B 0)
911 (?\e$(5#^\e(B 0)
912 (?\e$(5#_\e(B 0)
913 (?\e$(5#`\e(B 0)
914 (?\e$(5#a\e(B 0)
915 (?\e$(5#b\e(B 0)
916 (?\e$(5#c\e(B 0)
917 (?\e$(5#d\e(B 0)
918 (?\e$(5#e\e(B 0)
919 (?\e$(5#f\e(B 0)
920 (?\e$(5#g\e(B 0)
921 (?\e$(5#h\e(B 0)
922 (?\e$(5#i\e(B 0)
923 (?\e$(5#j\e(B 0)
924 (?\e$(5#k\e(B 0)
925 (?\e$(5#l\e(B 0)
926 (?\e$(5#m\e(B 0)
927 (?\e$(5#n\e(B 0)
928 (?\e$(5#o\e(B 0)
929 (?\e$(5#p\e(B 0)
930 (?\e$(5#q\e(B 0)
931 (?\e$(5#r\e(B 0)
932 (?\e$(5#s\e(B 0)
933 (?\e$(5#t\e(B 0)
934 (?\e$(5#u\e(B 0)
935 (?\e$(5#v\e(B 0)
936 (?\e$(5#w\e(B 0)
937 (?\e$(5#x\e(B 0)
938 (?\e$(5#y\e(B 0)
939 (?\e$(5#z\e(B 0)
940 (?\e$(5#{\e(B 0)
941 (?\e$(5#|\e(B 0)
942 (?\e$(5#}\e(B 0)
943 (?\e$(5#~\e(B 0)
944 (?\e$(5$!\e(B 0)
945 (?\e$(5$"\e(B 0)
946 (?\e$(5$#\e(B 0)
947 (?\e$(5$$\e(B 0)
948 (?\e$(5$%\e(B 0)
949 (?\e$(5$&\e(B 0)
950 (?\e$(5$'\e(B 0)
951 (?\e$(5$(\e(B 0)
952 (?\e$(5$)\e(B 0)
953 (?\e$(5$*\e(B 0)
954 (?\e$(5$+\e(B 0)
955 (?\e$(5$,\e(B 0)
956 (?\e$(5$-\e(B 0)
957 (?\e$(5$.\e(B 0)
958 (?\e$(5$/\e(B 0)
959 (?\e$(5$0\e(B 0)
960 (?\e$(5$1\e(B 0)
961 (?\e$(5$2\e(B 0)
962 (?\e$(5$3\e(B 0)
963 (?\e$(5$4\e(B 0)
964 (?\e$(5$5\e(B 0)
965 (?\e$(5$6\e(B 0)
966 (?\e$(5$7\e(B 0)
967 (?\e$(5$8\e(B 0)
968 (?\e$(5$9\e(B 0)
969 (?\e$(5$:\e(B 0)
970 (?\e$(5$;\e(B 0)
971 (?\e$(5$<\e(B 0)
972 (?\e$(5$=\e(B 0)
973 (?\e$(5$>\e(B 0)
974 (?\e$(5$?\e(B 0)
975 (?\e$(5$@\e(B 0)
976 (?\e$(5$A\e(B 0)
977 (?\e$(5$B\e(B 0)
978 (?\e$(5$C\e(B 0)
979 (?\e$(5$D\e(B 0)
980 (?\e$(5$E\e(B 0)
981 (?\e$(5$F\e(B 0)
982 (?\e$(5$G\e(B 0)
983 (?\e$(5$H\e(B 0)
984 (?\e$(5$I\e(B 0)
985 (?\e$(5$J\e(B 0)
986 (?\e$(5$K\e(B 0)
987 (?\e$(5$L\e(B 0)
988 (?\e$(5$M\e(B 0)
989 (?\e$(5$N\e(B 0)
990 (?\e$(5$O\e(B 0)
991 (?\e$(5$P\e(B 0)
992 (?\e$(5$Q\e(B 0)
993 (?\e$(5$R\e(B 0)
994 (?\e$(5$S\e(B 0)
995 (?\e$(5$T\e(B 0)
996 (?\e$(5$U\e(B 0)
997 (?\e$(5$V\e(B 0)
998 (?\e$(5$W\e(B 0)
999 (?\e$(5$X\e(B 0)
1000 (?\e$(5$Y\e(B 0)
1001 (?\e$(5$Z\e(B 0)
1002 (?\e$(5$[\e(B 0)
1003 (?\e$(5$\\e(B 0)
1004 (?\e$(5$]\e(B 0)
1005 (?\e$(5$^\e(B 0)
1006 (?\e$(5$_\e(B 0)
1007 (?\e$(5$`\e(B 0)
1008 (?\e$(5$a\e(B 0)
1009 (?\e$(5$b\e(B 0)
1010 (?\e$(5$c\e(B 0)
1011 (?\e$(5$d\e(B 0)
1012 (?\e$(5$e\e(B 0)
1013 (?\e$(5$f\e(B 0)
1014 (?\e$(5$g\e(B 0)
1015 (?\e$(5$h\e(B 0)
1016 (?\e$(5$i\e(B 0)
1017 (?\e$(5$j\e(B 0)
1018 (?\e$(5$k\e(B 0)
1019 (?\e$(5$l\e(B 0)
1020 (?\e$(5$m\e(B 0)
1021 (?\e$(5$n\e(B 0)
1022 (?\e$(5$o\e(B 0)
1023 (?\e$(5$p\e(B 0)
1024 (?\e$(5$q\e(B 0)
1025 (?\e$(5$r\e(B 0)
1026 (?\e$(5$s\e(B 0)
1027 (?\e$(5$t\e(B 0)
1028 (?\e$(5$u\e(B 0)
1029 (?\e$(5$v\e(B 0)
1030 (?\e$(5$w\e(B 0)
1031 (?\e$(5$x\e(B 0)
1032 (?\e$(5$y\e(B 0)
1033 (?\e$(5$z\e(B 0)
1034 (?\e$(5${\e(B 0)
1035 (?\e$(5$|\e(B 0)
1036 (?\e$(5$}\e(B 0)
1037 (?\e$(5$~\e(B 0)
1038 ))
1039
1040;; Determine composition priority and rule of the array of Glyphs.
1041;; Sort the glyphs with their priority.
1042
37cdc7ad 1043(defun devanagari-reorder-glyphs-for-composition (glyph-alist)
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KH		 1044 (let* ((pos 0)
1045 (ordered-glyphs '()))
1046 (while (< pos (length glyph-alist))
1047 (let* ((glyph (aref glyph-alist pos)))
1048 (setq pos (1+ pos))
1049 (setq ordered-glyphs
1050 (append ordered-glyphs (list (assq glyph devanagari-composition-rules))))))
1051 (sort ordered-glyphs '(lambda (x y) (< (car (cdr x)) (car (cdr y)))))))
1052
1053;;(devanagari-compose-to-one-glyph "\e$(5"5!X![\e(B") => "\e2\e$(6!XP"5@![\e1\e(B"
1054
1055(defun devanagari-compose-to-one-glyph (devanagari-string)
37cdc7ad 1056 (let* ((o-glyph-list (devanagari-reorder-glyphs-for-composition
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KH		 1057 (string-to-vector devanagari-string)))
1058 ;; List of glyphs to be composed.
1059 (cmp-glyph-list (list (car (car o-glyph-list))))
1060 (o-glyph-list (cdr o-glyph-list)))
1061 (while o-glyph-list
1062 (let* ((o-glyph (car o-glyph-list))
1063 (glyph (if (< 2 (length o-glyph))
1064 ;; default composition
1065 (list (car (cdr (cdr o-glyph))) (car o-glyph))
1066 ;; composition with a specified rule
1067 (list '(mr . ml) (car o-glyph)))))
1068 (setq o-glyph-list (cdr o-glyph-list))
1069 (setq cmp-glyph-list (append cmp-glyph-list glyph))))
1070 ;; Before applying compose-chars, convert glyphs to
1071 ;; 1-column width if possible.
1072 (setq cmp-glyph-list (devanagari-wide-to-narrow cmp-glyph-list))
1073 (if (= (length cmp-glyph-list) 1) (char-to-string (car cmp-glyph-list))
1074 (apply 'compose-chars cmp-glyph-list))))
1075
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KH		 1076;; Utility function for Phase 2.5
1077;; Check whether given glyph is a Devanagari vertical modifier or not.
1078;; If it is a vertical modifier, whether it should be 1-column shape or not
1079;; depends on previous non-vertical modifier.
1080 ; return nil if it is not vertical modifier.
1081(defun devanagari-vertical-modifier-p (glyph)
1082 (string-match (char-to-string glyph)
1083 "[\e$(5!]!^!_!`!a!b!c!h!i"p"q"r#K#L#M\e(B]"))
1084
1085(defun devanagari-non-vertical-modifier-p (glyph)
1086 (string-match (char-to-string glyph)
1087 "[\e$(5!Z![!\!d!e!f!g\e(B]"))
1088
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KH		 1089
1090;;
1091;; Phase 2.5 Convert Appropriate Character to 1-column shape.
1092;;
1093;; This is temporary and should be removed out when Emacs supports
1094;; variable width characters.
1095;;
1096;; This will convert the composing glyphs (2 column glyphs)
1097;; to narrow (1 column) glyphs if they exist.
1098;;
1099;; devanagari-wide-to-narrow-old converts glyphs simply.
1100;; devanagari-wide-to-narrow takes care of upper/lower apply-glyphs
1101;; with 2 column base-glyph.
1102;;
1103;; Execution Examples
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KH		 1104;;(devanagari-wide-to-narrow '(?\e$(5!3\e(B (ml . ml) ?\e$(5!a\e(B))
1105;;(devanagari-wide-to-narrow '(?\e$(5!F\e(B (ml . ml) ?\e$(5!a\e(B))
1106
1107;(defun devanagari-wide-to-narrow (src-list)
1108; (if (null src-list) '()
1109; (cons
1110; (if (and (numberp (car src-list))
1111; (cdr (assq (car src-list) devanagari-1-column-char)))
1112; (cdr (assq (car src-list) devanagari-1-column-char))
1113; (car src-list))
1114; (devanagari-wide-to-narrow (cdr src-list)))))
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KH		 1115
1116(defun devanagari-wide-to-narrow (src-list)
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KH		 1117 (devanagari-wide-to-narrow-iter src-list t))
1118
1119(defun devanagari-wide-to-narrow-iter (src-list wide-p)
1120 (let ((glyph (car src-list)))
1121 (cond ((null src-list) '())
1122 ; not glyph code
1123 ((not (numberp glyph))
1124 (cons glyph (devanagari-wide-to-narrow-iter (cdr src-list) wide-p)))
1125 ; vertical modifier glyph
1126 ((devanagari-vertical-modifier-p glyph)
1127 (if (and (null wide-p)
1128 (cdr (assq glyph devanagari-1-column-char)))
1129 (cons (cdr (assq glyph devanagari-1-column-char))
1130 (devanagari-wide-to-narrow-iter (cdr src-list) nil))
1131 (cons glyph
1132 (devanagari-wide-to-narrow-iter (cdr src-list) t))))
1133 ; nonvertical modifier glyph
1134 ((devanagari-non-vertical-modifier-p glyph)
1135 (if (cdr (assq glyph devanagari-1-column-char))
1136 (cons (cdr (assq glyph devanagari-1-column-char))
1137 (devanagari-wide-to-narrow-iter (cdr src-list) wide-p))
1138 (cons glyph
1139 (devanagari-wide-to-narrow-iter (cdr src-list) wide-p))))
1140 ; normal glyph
1141 (t
1142 (if (cdr (assq glyph devanagari-1-column-char))
1143 (cons (cdr (assq glyph devanagari-1-column-char))
1144 (devanagari-wide-to-narrow-iter (cdr src-list) nil))
1145 (cons glyph
1146 (devanagari-wide-to-narrow-iter (cdr src-list) t)))))))
1147
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KH		 1148
1149;;
1150;; Summary
1151;;
1152
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KH		 1153;;
1154;; Decomposition of composite font.
1155;;
1156
1157(defun devanagari-normalize-narrow-glyph (charlist)
1158 (let ((wide-char (car (rassoc (car charlist) devanagari-1-column-char))))
1159 (if (null charlist) nil
1160 (cons (if (null wide-char) (car charlist) wide-char)
1161 (devanagari-normalize-narrow-glyph (cdr charlist))))))
1162
1163(defvar devanagari-decomposition-rules
1164 '(
37cdc7ad 1165 (?\e$(5"p\e(B -10)
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KH		 1166 )
1167 )
1168
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KH		 1169(defun devanagari-reorder-glyphs-for-decomposition (glyphlist)
1170 "This function re-orders glyph list for decomposition."
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KH		 1171 (sort glyphlist
1172 '(lambda (x y)
1173 (let ((xx (assoc x devanagari-decomposition-rules))
1174 (yy (assoc y devanagari-decomposition-rules)))
1175 (if (null xx) (setq xx 0))
1176 (if (null yy) (setq yy 0))
1177 (< xx yy)))))
1178
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KH		 1179(defun devanagari-decompose-char (glyph)
1180 "This function decomposes one Devanagari composite glyph to
1181 basic Devanagari characters as a string."
1182 (let ((glyphlist
1183 (if (eq (car (split-char glyph)) 'composition)
1184 (string-to-list (decompose-composite-char glyph))
1185 (list glyph))))
4ed46869 1186 (setq glyphlist (devanagari-normalize-narrow-glyph glyphlist))
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KH		 1187 (setq glyphlist (devanagari-reorder-glyphs-for-decomposition glyphlist))
1188 (string-conversion-by-rule
1189 (mapconcat 'char-to-string glyphlist "") 'glyph-to-char)))
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KH		 1190
1191;;;###autoload
1192(defun devanagari-decompose-string (str)
1193 "This function Decomposes Devanagari glyph string to
1194basic Devanagari character string."
1195 (let ((src str) (dst ""))
1196 (while (not (equal src ""))
1197 (let* ((char (string-to-char src))
1198 (clen (char-bytes char)))
1199 (setq src (substring src clen))
1200 (setq dst (concat dst
1201 (devanagari-decompose-char char)))))
1202 dst))
1203
1204;;;###autoload
1205(defun devanagari-decompose-region (from to)
1206 (interactive "r")
1207 (save-restriction
1208 (narrow-to-region from to)
1209 (goto-char (point-min))
1210 (while (re-search-forward "." nil t)
1211 (let* ((match-b (match-beginning 0)) (match-e (match-end 0))
1212 (decmps (devanagari-decompose-string (buffer-substring match-b match-e))))
1213 (delete-char -1)
1214 (insert decmps)))))
1215
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KH		 1216;;;
1217;;; Composition
1218;;;
1219
1220;;;###autoload
1221(defun devanagari-compose-string (str &rest langs)
1222 (let ((len (length str))
1223 (src (devanagari-decompose-string str)) (dst "") rest match-b match-e)
1224 (while (string-match devanagari-composite-glyph-unit src)
1225 (setq match-b (match-beginning 0) match-e (match-end 0))
1226 (setq dst
1227 (concat dst
1228 (substring src 0 match-b)
1229 (devanagari-compose-to-one-glyph
1230 (apply
1231 'char-to-glyph-devanagari
1232 (cons (substring src match-b match-e)
1233 langs)))))
1234 (setq src (substring src match-e)))
1235 (setq dst (concat dst src))
1236 dst))
4ed46869 1237
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KH		 1238;;;###autoload
1239(defun devanagari-compose-region (from to &rest langs)
1240 (interactive "r")
1241 (save-restriction
1242 (narrow-to-region from to)
1243 (goto-char (point-min))
1244 (while (re-search-forward devanagari-composite-glyph-unit nil t)
1245 (let* ((match-b (match-beginning 0)) (match-e (match-end 0))
1246 (cmps (devanagari-compose-to-one-glyph
1247 (apply
1248 'char-to-glyph-devanagari
1249 (cons (buffer-substring match-b match-e)
1250 langs)))))
1251 (delete-region match-b match-e)
1252 (insert cmps)))))
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KH		 1253
1254;; For pre-write and post-read conversion
1255
1256;;;###autoload
1257(defun devanagari-compose-from-is13194-region (from to)
1258 "Compose IS 13194 characters in the region to Devanagari characters."
1259 (interactive "r")
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KH		 1260 (save-excursion
1261 (save-restriction
1262 (narrow-to-region from to)
1263 (indian-to-devanagari-region (point-min) (point-max))
1264 (devanagari-compose-region (point-min) (point-max))
1265 (- (point-max) (point-min)))))
4ed46869 1266
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KH		 1267;;;###autoload
1268(defun in-is13194-devanagari-post-read-conversion (len)
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KH		 1269 (let ((pos (point))
1270 (buffer-modified-p (buffer-modified-p)))
1271 (prog1
1272 (devanagari-compose-from-is13194-region pos (+ pos len))
1273 (set-buffer-modified-p buffer-modified-p))))
cefa701a 1274
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KH		 1275;;;###autoload
1276(defun devanagari-decompose-to-is13194-region (from to)
1277 "Decompose Devanagari characters in the region to IS 13194 characters."
1278 (interactive "r")
1279 (save-restriction
1280 (narrow-to-region from to)
1281 (devanagari-decompose-region (point-min) (point-max))
1282 (devanagari-to-indian-region (point-min) (point-max))))
1283
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KH		 1284;;;###autoload
1285(defun in-is13194-devanagari-pre-write-conversion (from to)
1286 (let ((old-buf (current-buffer))
1287 (work-buf (get-buffer-create " *devanagari-work*")))
1288 (set-buffer work-buf)
1289 (erase-buffer)
1290 (if (stringp from)
1291 (insert from)
1292 (insert-buffer-substring old-buf from to))
1293 (devanagari-decompose-to-is13194-region (point-min) (point-max))
1294 ;; Should return nil as annotations.
1295 nil))
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KH		 1296
1297;; For input/output of ITRANS
1298
1299;;;###autoload
1300(defun devanagari-encode-itrans-region (from to)
1301 (interactive "r")
1302 (save-restriction
1303 (narrow-to-region from to)
1304 (devanagari-decompose-to-is13194-region (point-min) (point-max))
1305 (indian-encode-itrans-region (point-min) (point-max))))
1306
1307;;;###autoload
1308(defun devanagari-decode-itrans-region (from to)
1309 (interactive "r")
1310 (save-restriction
1311 (narrow-to-region from to)
1312 (indian-decode-itrans-region (point-min) (point-max))
1313 (devanagari-compose-from-is13194-region (point-min) (point-max))))
1314
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RS		 1315;; Test comment.
1316
4ed46869 1317;;
650e8505 1318(provide 'devan-util)
4ed46869 1319
37cdc7ad 1320;;; devan-util.el end here
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