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[Emacs-diffs] Changes to emacs/lisp/language/devan-util.el [emacs-unicod
|
From: |
Kenichi Handa |
|
Subject: |
[Emacs-diffs] Changes to emacs/lisp/language/devan-util.el [emacs-unicode-2] |
|
Date: |
Mon, 08 Sep 2003 08:55:20 -0400 |
Index: emacs/lisp/language/devan-util.el
diff -c /dev/null emacs/lisp/language/devan-util.el:1.42.2.1
*** /dev/null Mon Sep 8 08:55:20 2003
--- emacs/lisp/language/devan-util.el Mon Sep 8 08:53:41 2003
***************
*** 0 ****
--- 1,655 ----
+ ;;; devan-util.el --- Support for composing Devanagari characters -*-coding:
iso-2022-7bit;-*-
+
+ ;; Copyright (C) 2001 Free Software Foundation, Inc.
+
+ ;; Maintainer: KAWABATA, Taichi <address@hidden>
+ ;; Keywords: multilingual, Devanagari
+
+ ;; This file is part of GNU Emacs.
+
+ ;; GNU Emacs is free software; you can redistribute it and/or modify
+ ;; it under the terms of the GNU General Public License as published by
+ ;; the Free Software Foundation; either version 2, or (at your option)
+ ;; any later version.
+
+ ;; GNU Emacs is distributed in the hope that it will be useful,
+ ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
+ ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ ;; GNU General Public License for more details.
+
+ ;; You should have received a copy of the GNU General Public License
+ ;; along with GNU Emacs; see the file COPYING. If not, write to the
+ ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
+ ;; Boston, MA 02111-1307, USA.
+
+ ;; Created: Feb. 17. 2001
+
+ ;;; Commentary:
+
+ ;; This file provides character(Unicode) to glyph(CDAC) conversion and
+ ;; composition of Devanagari script characters.
+
+ ;;; Code:
+
+ ;; Devanagari Composable Pattern
+ ;; C .. Consonants
+ ;; V .. Vowel
+ ;; H .. Halant
+ ;; M .. Matra
+ ;; V .. Vowel
+ ;; A .. Anuswar
+ ;; D .. Chandrabindu
+ ;; (N .. Zerowidth Non Joiner)
+ ;; (J .. Zerowidth Joiner. )
+ ;; 1. vowel
+ ;; V(A/D)?
+ ;; 2. syllable : maximum of 5 consecutive consonants. (e.g. kartsnya)
+ ;; ((CH)?(CH)?(CH)?CH)?C(H|M?(A|D)?)?
+
+ (defconst devanagari-consonant
+ "[$,15U(B-$,15y68(B-$,16?(B]")
+
+ ;;("$,16B(B" . nil)
+ ;;("$,16A(B" . nil)
+ ;;("$,16C(B" . nil)
+
+
+ (defconst devanagari-composable-pattern
+ (concat
+ "\\([$,15E(B-$,address@hidden(B][$,15A5B(B]?\\)\\|[$,15C6D(B]"
+ "\\|\\("
+
"\\(?:\\(?:[$,15U(B-$,15y68(B-$,16?(B]$,16-(B\\)?\\(?:[$,15U(B-$,15y68(B-$,16?(B]$,16-(B\\)?\\(?:[$,15U(B-$,15y68(B-$,16?(B]$,16-(B\\)?[$,15U(B-$,15y68(B-$,16?(B]$,16-(B\\)?"
+
"[$,15U(B-$,15y68(B-$,16?(B]\\(?:$,16-(B\\|[$,15~(B-$,16-6B6C(B]?[$,15B5A(B]?\\)?"
+ "\\)")
+ "Regexp matching a composable sequence of Devanagari characters.")
+
+ (dolist (range '((#x0903 . #x0903)
+ (#x0905 . #x0939)
+ (#x0958 . #x0961)))
+ (set-char-table-range indian-composable-pattern range
+ devanagari-composable-pattern))
+
+ ;;;###autoload
+ (defun devanagari-compose-region (from to)
+ (interactive "r")
+ (save-excursion
+ (save-restriction
+ (narrow-to-region from to)
+ (goto-char (point-min))
+ (while (re-search-forward devanagari-composable-pattern nil t)
+ (devanagari-compose-syllable-region (match-beginning 0)
+ (match-end 0))))))
+ (defun devanagari-compose-string (string)
+ (with-temp-buffer
+ (insert (decompose-string string))
+ (devanagari-compose-region (point-min) (point-max))
+ (buffer-string)))
+
+ (defun devanagari-post-read-conversion (len)
+ (save-excursion
+ (save-restriction
+ (let ((buffer-modified-p (buffer-modified-p)))
+ (narrow-to-region (point) (+ (point) len))
+ (devanagari-compose-region (point-min) (point-max))
+ (set-buffer-modified-p buffer-modified-p)
+ (- (point-max) (point-min))))))
+
+ (defun devanagari-regexp-of-hashtbl-keys (hashtbl)
+ "Return a regular expression that matches all keys in hashtable HASHTBL."
+ (let ((max-specpdl-size 1000))
+ (regexp-opt
+ (sort
+ (let (dummy)
+ (maphash (function (lambda (key val) (setq dummy (cons key dummy))))
hashtbl)
+ dummy)
+ (function (lambda (x y) (> (length x) (length y))))))))
+
+ ;;;###autoload
+ (defun devanagari-composition-function (pos &optional string)
+ "Compose Devanagari characters after the position POS.
+ If STRING is not nil, it is a string, and POS is an index to the string.
+ In this case, compose characters after POS of the string."
+ (if string
+ ;; Not yet implemented.
+ nil
+ (goto-char pos)
+ (if (looking-at devanagari-composable-pattern)
+ (prog1 (match-end 0)
+ (devanagari-compose-syllable-region pos (match-end 0))))))
+
+ ;; Notes on conversion steps.
+
+ ;; 1. chars to glyphs
+ ;;
+ ;; Rules will not be applied to the halant appeared at the end of the
+ ;; text. Also, the preceding/following "r" will be treated as special case.
+
+ ;; 2. glyphs reordering.
+ ;;
+ ;; The glyphs are split by halant, and each glyph groups are
+ ;; re-ordered in the following order.
+ ;;
+ ;; Note that `consonant-glyph' mentioned here does not contain the
+ ;; vertical bar (right modifier) attached at the right of the
+ ;; consonant.
+ ;;
+ ;; If the glyph-group contains right modifier,
+ ;; (1) consonant-glyphs/vowels, with nukta sign
+ ;; (2) spacing
+ ;; (3) right modifier (may be matra)
+ ;; (4) top matra
+ ;; (5) preceding "r"
+ ;; (6) anuswar
+ ;; (7) following "r"
+ ;; (8) bottom matra or halant.
+ ;;
+ ;; Otherwise,
+ ;; (1) consonant-glyph/vowels, with nukta sign
+ ;; (3) left matra
+ ;; (4) top matra
+ ;; (5) preceding "r"
+ ;; (6) anuswar
+ ;; (7) following "r"
+ ;; (8) bottom matra or halant.
+ ;; (2) spacing
+
+ ;; 3. glyph to glyph
+ ;;
+ ;; For better display, some glyph display would be tuned.
+
+ ;; 4. Composition.
+ ;;
+ ;; left modifiers will be attached at the left.
+ ;; others will be attached right.
+
+ ;; Problem::
+ ;; Can we generalize this methods to other Indian scripts?
+
+ (defvar dev-char-glyph
+ '(("$,15E(B" . "$,4 K(B")
+ ("$,15F(B" . "$,4 K")(B")
+ ("$,15~(B" . "$,4")(B")
+ ("$,15G(B" . "$,4 \(B")
+ ("$,15(B" . "$,4"*(B")
+ ("$,155A(B" . "$,4"*(B\$,4"&(B")
+ ("$,15H(B" . "$,4 \"'(B")
+ ("$,15H5A(B" . "$,4 \"'"&(B")
+ ("$,16 (B" . "$,4"2(B")
+ ("$,16 5A(B" . "$,4"2"&(B")
+ ("$,15I(B" . "$,4 ](B")
+ ("$,16!(B" . "$,4"6(B")
+ ("$,15J(B" . "$,4 ^"P(B")
+ ("$,16"(B" . "$,4":(B")
+ ("$,15K(B" . "$,4 `"Q(B")
+ ("$,16#(B" . "$,4">(B")
+ ;;("$,15L(B" . nil) ; not implemented.
+ ("$,16$(B" . "$,4"?(B")
+ ("$,15M(B" . "$,4 b"L(B")
+ ("$,15M5A(B" . "$,4 b"$(B")
+ ("$,15M5B(B" . "$,4 b"$(B")
+ ("$,16%(B" . "\$,4"L(B")
+ ("$,15N(B" . "$,4 b"@(B")
+ ("$,15N5A(B" . "$,4 b"@"&(B")
+ ("$,16&(B" . "\$,4"@(B")
+ ("$,16&5A(B" . "\$,4"@(B\$,4"&(B")
+ ("$,15O(B" . "$,4 b(B")
+ ("$,16'(B" . "\$,4"D(B")
+ ("$,16'5A(B" . "\$,4"D(B\$,4"&(B")
+ ("$,15P(B" . "$,4 b"D(B")
+ ("$,15P5A(B" . "$,4 b"D"&(B")
+ ("$,16((B" . "\$,4"H(B")
+ ("$,16(5A(B" . "\$,4"H(B\$,4"&(B")
+ ("$,15Q(B" . "$,4 K")"L(B") ;; special rule for reodering.
+ ("$,15Q5A(B" . "$,4 K")"$(B")
+ ("$,15Q5B(B" . "$,4 K")"$(B")
+ ("$,16)(B" . "\$,4")"L(B")
+ ("$,16)5A(B" . "\$,4")"$(B")
+ ("$,16)5B(B" . "\$,4")"$(B")
+ ("$,15R(B" . "$,4 K")"@(B")
+ ("$,15R5A(B" . "$,4 K")"@"&(B")
+ ("$,16*(B" . "\$,4")"@(B")
+ ("$,16*5A(B" . "\$,4")"@"&(B")
+ ("$,15S(B" . "$,4 K")"D(B")
+ ("$,15S5A(B" . "$,4 K")"D"&(B")
+ ("$,16+(B" . "\$,4")"D(B")
+ ("$,16+5A(B" . "\$,4")"D"&(B")
+ ("$,15T(B" . "$,4 K")"H(B")
+ ("$,15T5A(B" . "$,4 K")"H"&(B")
+ ("$,16,(B" . "\$,4")"H(B")
+ ("$,16,5A(B" . "\$,4")"H"&(B")
+ ("$,address@hidden(B" . "$,4 a"Q(B")
+ ;;("$,16B(B" . nil)
+ ;;("$,16A(B" . nil)
+ ;;("$,16C(B" . nil)
+
+ ;; GRUTTALS
+ ("$,15U(B" . "$,4 e"R(B")
+ ("$,15U6-(B" . "$,4 c(B")
+ ("$,15U6-5p(B" . "$,4 g"R(B")
+ ("$,15U6-5d(B" . "$,4 h"R(B")
+ ("$,15U6-5w(B" . "$,4 i")(B")
+ ("$,15U6-5w6-(B" . "$,4 i(B")
+
+ ("$,15V(B" . "$,4 j")(B")
+ ("$,15V6-(B" . "$,4 j(B")
+ ("$,15V6-5p(B" . "$,4 l")(B")
+ ("$,15V6-5p6-(B" . "$,4 l(B")
+
+ ("$,15W(B" . "$,4 m")(B")
+ ("$,15W6-(B" . "$,4 m(B")
+ ("$,15W6-5p(B" . "$,4 o")(B")
+ ("$,15W6-5p6-(B" . "$,4 o(B")
+
+ ("$,15X(B" . "$,4 p")(B")
+ ("$,15X6-(B" . "$,4 p(B")
+ ("$,15X6-5p(B" . "$,4 q")(B")
+ ("$,15X6-5p6-(B" . "$,4 q(B")
+
+ ("$,15Y(B" . "$,4 r"S(B")
+ ;; PALATALS
+ ("$,15Z(B" . "$,4 s")(B")
+ ("$,15Z6-(B" . "$,4 s(B")
+ ("$,15Z6-5p(B" . "$,4 t")(B")
+ ("$,15Z6-5p6-(B" . "$,4 t(B")
+
+ ("$,15[(B" . "$,4 u"T(B")
+
+ ("$,15\(B" . "$,4 v")(B")
+ ("$,15\6-(B" . "$,4 v(B")
+ ("$,15\6-5p(B" . "$,4 x")(B")
+ ("$,15\6-5p6-(B" . "$,4 x(B")
+ ("$,15\6-5^(B" . "$,4 y")(B")
+ ("$,15\6-5^6-(B" . "$,4 y(B")
+
+ ("$,15](B" . "$,4 z")(B")
+ ("$,15]6-(B" . "$,4 z(B")
+ ("$,15]6-5p(B" . "$,4 {")(B")
+ ("$,15]6-5p6-(B" . "$,4 {(B")
+
+ ("$,15^(B" . "$,4 |")(B")
+ ("$,15^6-(B" . "$,4 |(B")
+ ;; CEREBRALS
+ ("$,15_(B" . "$,4 }"U(B")
+ ("$,15_6-5_(B" . "$,4 ~"U(B")
+ ("$,15_6-5`(B" . "$,4 "U(B")
+
+ ("$,15`(B" . "$,4! "V(B")
+ ("$,15`6-5`(B" . "$,4!!"V(B")
+
+ ("$,15a(B" . "$,4!""W(B")
+ ("$,15a6-5a(B" . "$,4!$"W(B")
+ ("$,15a6-5b(B" . "$,4!%"W(B")
+
+ ("$,15b(B" . "$,4!&"X(B")
+
+ ("$,15c(B" . "$,4!(")(B")
+ ("$,15c6-(B" . "$,4!((B")
+ ;; DENTALS
+ ("$,15d(B" . "$,4!)")(B")
+ ("$,15d6-(B" . "$,4!)(B")
+ ("$,15d6-5p(B" . "$,4!*")(B")
+ ("$,15d6-5p6-(B" . "$,4!*(B")
+ ("$,15d6-5d(B" . "$,4!+")(B")
+ ("$,15d6-5d6-(B" . "$,4!+(B")
+
+ ("$,15e(B" . "$,4!,")(B")
+ ("$,15e6-(B" . "$,4!,(B")
+ ("$,15e6-5p(B" . "$,4!-")(B")
+ ("$,15e6-5p6-(B" . "$,4!-(B")
+
+ ("$,15f(B" . "$,4!."Y(B")
+ ("$,15f6#(B" . "$,4!/"Y(B")
+ ("$,15f6-5p(B" . "$,4!0"Y(B")
+ ("$,15f6-5f(B" . "$,4!1"Y(B")
+ ("$,15f6-5g(B" . "$,4!2"Y(B")
+ ("$,15f6-5n(B" . "$,4!3(B")
+ ("$,15f6-5o(B" . "$,4!4(B")
+ ("$,15f6-5u(B" . "$,4!5"Y(B")
+
+ ("$,15g(B" . "$,4!6")(B")
+ ("$,15g6-(B" . "$,4!6(B")
+ ("$,15g6-5p(B" . "$,4!7")(B")
+ ("$,15g6-5p6-(B" . "$,4!7(B")
+
+ ("$,15h(B" . "$,4!8")(B")
+ ("$,15h6-(B" . "$,4!8(B")
+ ("$,15h6-5p(B" . "$,4!9")(B")
+ ("$,15h6-5p6-(B" . "$,4!9")(B")
+ ("$,15h6-5h(B" . "$,4!:")(B")
+ ("$,15h6-5h6-(B" . "$,4!:(B")
+
+ ("$,15i(B" . "$,4!8"#")(B")
+ ;; LABIALS
+ ("$,15j(B" . "$,4!;")(B")
+ ("$,15j6-(B" . "$,4!;(B")
+ ("$,15j6-5p(B" . "$,4!<")(B")
+ ("$,15j6-5p6-(B" . "$,4!<(B")
+
+ ("$,15k(B" . "$,4!a"[(B")
+ ("$,15k6-(B" . "$,4!=(B")
+ ("$,15k6-5p(B" . "$,4!c"[(B")
+
+ ("$,15l(B" . "$,4!d")(B")
+ ("$,15l6-(B" . "$,4!d(B")
+ ("$,15l6-5p(B" . "$,4!e")(B")
+ ("$,15l6-5p6-(B" . "$,4!e(B")
+
+ ("$,15m(B" . "$,4!f")(B")
+ ("$,15m6-(B" . "$,4!f(B")
+ ("$,15m6-5p(B" . "$,4!g")(B")
+ ("$,15m6-5p6-(B" . "$,4!g(B")
+
+ ("$,15n(B" . "$,4!h")(B")
+ ("$,15n6-(B" . "$,4!h(B")
+ ("$,15n6-5p(B" . "$,4!i")(B")
+ ("$,15n6-5p6-(B" . "$,4!i(B")
+ ;; SEMIVOWELS
+ ("$,15o(B" . "$,4!j")(B")
+ ("$,15o6-(B" . "$,4!j(B")
+ ("$,15o6-5p(B" . "$,4!k")(B")
+ ("$,15o6-5p6-(B" . "$,4!k(B")
+ ("$,16-5o(B" . "$,4!l(B") ;; when every ohter lig. fails.
+
+ ("$,15p(B" . "$,4!n"W(B")
+ ;; ("$,15p6-(B" . "\$,4"'(B") ;; special case. only the topmost pos.
+ ("$,15q(B" . "$,4!n"#"W(B")
+ ("$,15q6-(B" . "$,4!m(B") ;; IS 13194 speical rule.
+ ("$,15p6!(B" . "$,4!o"[(B")
+ ("$,15p6"(B" . "$,4!p"\(B")
+
+ ("$,15r(B" . "$,4!q")(B")
+ ("$,15r6-(B" . "$,4!q(B")
+ ("$,15s(B" . "$,4!s(B")
+ ("$,15s6-(B" . "$,4!r(B")
+ ("$,15t(B" . "$,4!s"#(B")
+ ("$,15t6-(B" . "$,4!r"#(B")
+
+ ("$,15u(B" . "$,4!t")(B")
+ ("$,15u6-(B" . "$,4!t(B")
+ ("$,15u6-5p(B" . "$,4!u")(B")
+ ("$,15u6-5p6-(B" . "$,4!u(B")
+ ;; SIBILANTS
+ ("$,15v(B" . "$,4!v")(B")
+ ("$,15v6-(B" . "$,4!v(B")
+ ("$,15v6-5u(B" . "$,4!w")(B")
+ ("$,15v6-5u6-(B" . "$,4!w(B")
+ ("$,15v6-5p(B" . "$,4!x")(B")
+ ("$,15v6-5p6-(B" . "$,4!x(B")
+
+ ("$,15w(B" . "$,4!y")(B")
+ ("$,15w6-(B" . "$,4!y(B")
+ ("$,15x(B" . "$,4!z")(B")
+ ("$,15x6-(B" . "$,4!z(B")
+ ("$,15x6-5p(B" . "$,4!{")(B")
+ ("$,15x6-5p6-(B" . "$,4!{(B")
+
+ ("$,15y(B" . "$,4!}(B")
+ ("$,15y6-(B" . "$,4!|(B")
+ ("$,15y6#(B" . "$,4!~(B")
+ ("$,15y6-5p(B" . "$,4!(B")
+ ("$,15y6-5n(B" . "$,4" (B")
+ ("$,15y6-5o(B" . "$,4"!(B")
+ ;; NUKTAS
+ ("$,168(B" . "$,4 f"R"S(B")
+ ("$,1686-(B" . "$,4 d(B")
+ ("$,169(B" . "$,4 k")(B")
+ ("$,1696-(B" . "$,4 k(B")
+ ("$,16:(B" . "$,4 n")(B")
+ ("$,16:6-(B" . "$,4 n(B")
+ ("$,16;(B" . "$,4 w")(B")
+ ("$,16;6-(B" . "$,4 w(B")
+ ("$,16<(B" . "$,4!#"W(B")
+ ("$,16=(B" . "$,4!'"X(B")
+ ("$,16>(B" . "$,4!b"[(B")
+ ("$,16>6-(B" . "$,4!>(B")
+ ("$,16?(B" . "$,4!j"#")(B")
+ ;; misc modifiers.
+ ("$,15A(B" . "\$,4"$(B")
+ ("$,15B(B" . "\$,4"&(B")
+ ("$,15C(B" . "$,4 F(B")
+ ("$,15|(B" . "$,4"#(B")
+ ("$,15}(B" . "$,4 E(B")
+ ("$,16-(B" . "$,4""(B")
+ ("$,16-5p(B" . "$,4"%(B") ;; following "r"
+ ;; ("$,160(B" . "$,4 D(B")
+ ("$,16D(B" . "$,4 J(B")
+ ;; ("$,16F(B" . "")
+ ;; ("$,16G(B" . "")
+ ;; ("$,16H(B" . "")
+ ;; ("$,16I(B" . "")
+ ;; ("$,16J(B" . "")
+ ;; ("$,16K(B" . "")
+ ;; ("$,16L(B" . "")
+ ;; ("$,16M(B" . "")
+ ;; ("$,16N(B" . "")
+ ;; ("$,16O(B" . "")
+ )
+ "Devanagari characters to glyphs conversion table.
+ Default value contains only the basic rules. You may add your own
+ preferred rule from the sanskrit fonts." )
+
+ (defvar dev-char-glyph-hash
+ (let* ((hash (make-hash-table :test 'equal)))
+ (mapc (function (lambda (x) (puthash (car x) (cdr x) hash)))
+ dev-char-glyph)
+ hash))
+
+ (defvar dev-char-glyph-regexp
+ (devanagari-regexp-of-hashtbl-keys dev-char-glyph-hash))
+
+ ;; glyph-to-glyph conversion table.
+ ;; it is supposed that glyphs are ordered in
+ ;; [consonant/nukta] - [matra/halant] - [preceding-r] - [anuswar].
+
+ (defvar dev-glyph-glyph
+ '(("\$,4"'(B\$,4"&(B" . "\$,4"((B")
+ ("\$,4"'(B\$,4"$(B" . "\$,4"((B")
+ ("$,4"*(B\$,4"&(B" . "$,4"+(B")
+ ("$,4"*(B\$,4"'(B" . "$,4",(B")
+ ("$,4"*(B\$,4"'(B\$,4"&(B" . "$,4"-(B")
+ ("$,4"2(B\$,4"&(B" . "$,4"3(B")
+ ("$,4"2(B\$,4"'(B" . "$,4"4(B")
+ ("$,4"2(B\$,4"'(B\$,4"&(B" . "$,4"5(B")
+ ("$,4"#(B\$,4"6(B" . "$,4"7(B")
+ ("$,4"%(B\$,4"6(B" . "$,4"8(B")
+ ;;("$,4"6(B" . "$,4"9(B")
+ ("$,4"#(B\$,4":(B" . "$,4";(B")
+ ("$,4"%(B\$,4":(B" . "$,4"<(B")
+ ;;("$,4":(B" . "$,4"=(B")
+ ("\$,4"@(B\$,4"&(B" . "\$,4"A(B")
+ ("\$,4"@(B\$,4"'(B" . "\$,4"B(B")
+ ("\$,4"@(B\$,4"'(B\$,4"&(B" . "\$,4"C(B")
+ ("\$,4"D(B\$,4"&(B" . "\$,4"E(B")
+ ("\$,4"D(B\$,4"'(B" . "\$,4"F(B")
+ ("\$,4"D(B\$,4"'(B\$,4"&(B" . "\$,4"G(B")
+ ("\$,4"H(B\$,4"&(B" . "\$,4"I(B")
+ ("\$,4"H(B\$,4"'(B" . "\$,4"J(B")
+ ("\$,4"H(B\$,4"'(B\$,4"&(B" . "\$,4"K(B")
+ ("\$,4"L(B\$,4"&(B" . "\$,4"M(B")
+ ("\$,4"L(B\$,4"'(B" . "\$,4"N(B")
+ ("\$,4"L(B\$,4"'(B\$,4"&(B" . "\$,4"O(B")
+ ))
+ (defvar dev-glyph-glyph-hash
+ (let* ((hash (make-hash-table :test 'equal)))
+ (mapc (function (lambda (x) (puthash (car x) (cdr x) hash)))
+ dev-glyph-glyph)
+ hash))
+ (defvar dev-glyph-glyph-regexp
+ (devanagari-regexp-of-hashtbl-keys dev-glyph-glyph-hash))
+
+
+ ;; yet another glyph-to-glyph conversions.
+ (defvar dev-glyph-glyph-2
+ '(("$,4"*(B" . "$,4".(B")
+ ("$,4"+(B" . "$,4"/(B")
+ ("$,4",(B" . "$,4"0(B")
+ ("$,4"-(B" . "$,4"1(B")))
+ (defvar dev-glyph-glyph-2-hash
+ (let* ((hash (make-hash-table :test 'equal)))
+ (mapc (function (lambda (x) (puthash (car x) (cdr x) hash)))
+ dev-glyph-glyph-2)
+ hash))
+ (defvar dev-glyph-glyph-2-regexp
+ (devanagari-regexp-of-hashtbl-keys dev-glyph-glyph-2-hash))
+
+ (defun dev-charseq (from &optional to)
+ (if (null to) (setq to from))
+ (number-sequence (decode-char 'devanagari-cdac from)
+ (decode-char 'devanagari-cdac to)))
+
+ (defvar dev-glyph-cvn
+ (append
+ (dev-charseq #x2b)
+ (dev-charseq #x3c #xc1)
+ (dev-charseq #xc3))
+ "Devanagari Consonants/Vowels/Nukta Glyphs")
+
+ (defvar dev-glyph-space
+ (dev-charseq #xf0 #xfe)
+ "Devanagari Spacing Glyphs")
+
+ (defvar dev-glyph-right-modifier
+ (append
+ (dev-charseq #xc9)
+ (dev-charseq #xd2 #xd5))
+ "Devanagari Modifiers attached at the right side.")
+
+ (defvar dev-glyph-right-modifier-regexp
+ (concat "[" dev-glyph-right-modifier "]"))
+
+ (defvar dev-glyph-left-matra
+ (dev-charseq #xca #xd1)
+ "Devanagari Matras attached at the left side.")
+
+ (defvar dev-glyph-top-matra
+ (dev-charseq #xe0 #xef)
+ "Devanagari Matras attached at the top side.")
+
+ (defvar dev-glyph-bottom-modifier
+ (append
+ (dev-charseq #xd6 #xdf)
+ (dev-charseq #xc2))
+ "Devanagari Modifiers attached at the bottom.")
+
+ (defvar dev-glyph-order
+ `((,dev-glyph-cvn . 1)
+ (,dev-glyph-space . 2)
+ (,dev-glyph-right-modifier . 3)
+ (,dev-glyph-left-matra . 3) ;; processed by reference point.
+ (,dev-glyph-top-matra . 4)
+ (,(dev-charseq #xc7 #xc8) . 5)
+ (,(dev-charseq #xc4) . 6)
+ (,(dev-charseq #xc6) . 6)
+ (,(dev-charseq #xc5) . 7)
+ (,dev-glyph-bottom-modifier . 8)))
+
+ (mapc
+ (function (lambda (x)
+ (mapc
+ (function (lambda (y)
+ (put-char-code-property y 'composition-order (cdr x))))
+ (car x))))
+ dev-glyph-order)
+
+ (mapc
+ (function (lambda (x)
+ (put-char-code-property x 'reference-point '(3 . 5))))
+ dev-glyph-left-matra)
+
+ (defun devanagari-compose-syllable-string (string)
+ (with-temp-buffer
+ (insert (decompose-string string))
+ (devanagari-compose-syllable-region (point-min) (point-max))
+ (buffer-string)))
+
+ (defun devanagari-compose-syllable-region (from to)
+ "Compose devanagari syllable in region FROM to TO."
+ (let ((glyph-str nil) (cons-num 0) glyph-str-list
+ (last-halant nil) (preceding-r nil) (last-modifier nil)
+ (last-char (char-before to)) match-str
+ glyph-block split-pos)
+ (save-excursion
+ (save-restriction
+ ;;; *** char-to-glyph conversion ***
+ ;; Special rule 1. -- Last halant must be preserved.
+ (if (eq last-char ?$,16-(B)
+ (progn
+ (setq last-halant t)
+ (narrow-to-region from (1- to)))
+ (narrow-to-region from to)
+ ;; note if the last char is modifier.
+ (if (or (eq last-char ?$,15A(B) (eq last-char ?$,15B(B))
+ (setq last-modifier t)))
+ (goto-char (point-min))
+ ;; Special rule 2. -- preceding "r halant" must be modifier.
+ (when (looking-at "$,15p6-(B.")
+ (setq preceding-r t)
+ (goto-char (+ 2 (point))))
+ ;; translate the rest characters into glyphs
+ (while (not (eobp))
+ (if (looking-at dev-char-glyph-regexp)
+ (let ((end (match-end 0)))
+ (setq match-str (match-string 0)
+ glyph-str
+ (concat glyph-str
+ (gethash match-str dev-char-glyph-hash)))
+ ;; count the number of consonant-glyhs.
+ (if (string-match devanagari-consonant match-str)
+ (setq cons-num (1+ cons-num)))
+ (goto-char end))
+ (setq glyph-str (concat glyph-str (string (following-char))))
+ (forward-char 1)))
+ ;; preceding-r must be attached before the anuswar if exists.
+ (if preceding-r
+ (if last-modifier
+ (setq glyph-str (concat (substring glyph-str 0 -1)
+ "$,4"'(B" (substring glyph-str -1)))
+ (setq glyph-str (concat glyph-str "$,4"'(B"))))
+ (if last-halant (setq glyph-str (concat glyph-str "$,4""(B")))
+ ;;; *** glyph-to-glyph conversion ***
+ (when (string-match dev-glyph-glyph-regexp glyph-str)
+ (setq glyph-str
+ (replace-match (gethash (match-string 0 glyph-str)
+ dev-glyph-glyph-hash)
+ nil t glyph-str))
+ (if (and (> cons-num 1)
+ (string-match dev-glyph-glyph-2-regexp glyph-str))
+ (setq glyph-str
+ (replace-match (gethash (match-string 0 glyph-str)
+ dev-glyph-glyph-2-hash)
+ nil t glyph-str))))
+ ;;; *** glyph reordering ***
+ (while (setq split-pos (string-match "$,4""(B\\|.$" glyph-str))
+ (setq glyph-block (substring glyph-str 0 (1+ split-pos)))
+ (setq glyph-str (substring glyph-str (1+ split-pos)))
+ (setq
+ glyph-block
+ (if (string-match dev-glyph-right-modifier-regexp glyph-block)
+ (sort (string-to-list glyph-block)
+ (function (lambda (x y)
+ (< (get-char-code-property x 'composition-order)
+ (get-char-code-property y 'composition-order)))))
+ (sort (string-to-list glyph-block)
+ (function (lambda (x y)
+ (let ((xo (get-char-code-property x 'composition-order))
+ (yo (get-char-code-property y 'composition-order)))
+ (if (= xo 2) nil (if (= yo 2) t (< xo yo)))))))))
+ (setq glyph-str-list (nconc glyph-str-list glyph-block)))
+ ;; concatenate and attach reference-points.
+ (setq glyph-str
+ (cdr
+ (apply
+ 'nconc
+ (mapcar
+ (function (lambda (x)
+ (list
+ (or (get-char-code-property x 'reference-point)
+ '(5 . 3) ;; default reference point.
+ )
+ x)))
+ glyph-str-list))))))
+ (compose-region from to glyph-str)))
+
+ (provide 'devan-util)
+
+ ;;; devan-util.el ends here
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