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[Emacs-diffs] Changes to emacs/lisp/language/knd-util.el [lexbind]
|
From: |
Miles Bader |
|
Subject: |
[Emacs-diffs] Changes to emacs/lisp/language/knd-util.el [lexbind] |
|
Date: |
Thu, 20 Nov 2003 19:36:37 -0500 |
Index: emacs/lisp/language/knd-util.el
diff -c /dev/null emacs/lisp/language/knd-util.el:1.3.2.1
*** /dev/null Thu Nov 20 19:36:37 2003
--- emacs/lisp/language/knd-util.el Thu Nov 20 19:35:50 2003
***************
*** 0 ****
--- 1,544 ----
+ ;;; knd-util.el --- Support for composing Kannada characters
+
+ ;; Copyright (C) 2003 Free Software Foundation, Inc.
+
+ ;; Maintainer: Maintainer: CHOWKSEY, Kailash C. <address@hidden>
+ ;; Keywords: multilingual, Kannada
+
+ ;; 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: Jul. 14. 2003
+
+ ;;; Commentary:
+
+ ;; This file provides character(Unicode) to glyph(CDAC) conversion and
+ ;; composition of Kannada script characters.
+
+ ;;; Code:
+
+ ;;;###autoload
+
+ ;; Kannada Composable Pattern
+ ;; C .. Consonants
+ ;; V .. Vowel
+ ;; H .. Virama
+ ;; M .. Matra
+ ;; V .. Vowel
+ ;; (N .. Zerowidth Non Joiner)
+ ;; (J .. Zerowidth Joiner. )
+ ;; 1. vowel
+ ;; V(A)?
+ ;; 2. syllable : maximum of 5 consecutive consonants. (e.g. kartsnya)
+ ;; ((CH)?(CH)?(CH)?CH)?C(H|M?)?
+
+ (defconst kannada-consonant
+ "[$,1>u(B-$,1?9(B]")
+
+ (defconst kannada-consonant-needs-twirl
+ "[$,1>u>w(B-$,1>{>}(B-$,1>~?
(B-$,1?"?$(B-$,1?+?-?0?3(B-$,1?9(B]\\($,1?M(B[$,1>u(B-$,1?9(B]\\)*[$,1?A?B?C?D>b(B]?$")
+
+ (defconst kannada-composable-pattern
+ (concat
+ "\\([$,1>b(B-$,1>t?`>l(B]\\)\\|[$,1>c(B]"
+ "\\|\\("
+
"\\(?:\\(?:[$,1>u(B-$,1?9(B]$,1?M(B\\)?\\(?:[$,1>u(B-$,1?9(B]$,1?M(B\\)?\\(?:[$,1>u(B-$,1?9(B]$,1?M(B\\)?[$,1>u(B-$,1?9(B]$,1?M(B\\)?"
+ "[$,1>u(B-$,1?9(B]\\(?:$,1?M(B\\|[$,1?>(B-$,1?M?U?C(B]?\\)?"
+ "\\)")
+ "Regexp matching a composable sequence of Kannada characters.")
+
+ ;;;###autoload
+ (defun kannada-compose-region (from to)
+ (interactive "r")
+ (save-excursion
+ (save-restriction
+ (narrow-to-region from to)
+ (goto-char (point-min))
+ (while (re-search-forward kannada-composable-pattern nil t)
+ (kannada-compose-syllable-region (match-beginning 0)
+ (match-end 0))))))
+ ;;;###autoload
+ (defun kannada-compose-string (string)
+ (with-temp-buffer
+ (insert (decompose-string string))
+ (kannada-compose-region (point-min) (point-max))
+ (buffer-string)))
+
+ ;;;###autoload
+ (defun kannada-post-read-conversion (len)
+ (save-excursion
+ (save-restriction
+ (let ((buffer-modified-p (buffer-modified-p)))
+ (narrow-to-region (point) (+ (point) len))
+ (kannada-compose-region (point-min) (point-max))
+ (set-buffer-modified-p buffer-modified-p)
+ (- (point-max) (point-min))))))
+
+ (defun kannada-range (from to)
+ "Make the list of the integers of range FROM to TO."
+ (let (result)
+ (while (<= from to) (setq result (cons to result) to (1- to))) result))
+
+ (defun kannada-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))))))))
+
+ (defun kannada-regexp-of-hashtbl-vals (hashtbl)
+ "Return a regular expression that matches all values in hashtable HASHTBL."
+ (let ((max-specpdl-size 1000))
+ (regexp-opt
+ (sort
+ (let (dummy)
+ (maphash (function (lambda (key val) (setq dummy (cons val dummy))))
hashtbl)
+ dummy)
+ (function (lambda (x y) (> (length x) (length y))))))))
+
+ (defun kannada-composition-function (from to pattern &optional string)
+ "Compose Kannada characters in REGION, or STRING if specified.
+ Assume that the REGION or STRING must fully match the composable
+ PATTERN regexp."
+ (if string (kannada-compose-syllable-string string)
+ (kannada-compose-syllable-region from to))
+ (- to from))
+
+ ;; Register a function to compose Kannada characters.
+ (mapc
+ (function (lambda (ucs)
+ (aset composition-function-table (decode-char 'ucs ucs)
+ (list (cons kannada-composable-pattern
+ 'kannada-composition-function)))))
+ (kannada-range #x0c80 #x0cff))
+
+ ;; Notes on conversion steps.
+
+ ;; 1. chars to glyphs
+ ;;
+ ;; Rules will not be applied to the virama 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 virama, 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
+ ;; (2) spacing
+ ;; (3) right modifier (may be matra)
+ ;; (4) top matra
+ ;; (5) preceding "r"
+ ;; (7) following "r"
+ ;; (8) bottom matra or virama.
+ ;;
+ ;; Otherwise,
+ ;; (1) consonant-glyph/vowels, with nukta sign
+ ;; (3) left matra
+ ;; (4) top matra
+ ;; (5) preceding "r"
+ ;; (7) following "r"
+ ;; (8) bottom matra or virama.
+ ;; (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 knd-char-glyph
+ '(("$,1>e(B" . "$,address@hidden(B")
+ ("$,1>f(B" . "$,43A(B")
+ ("$,1?>(B" . "$,44{(B")
+ ("$,1>g(B" . "$,43B(B")
+ ("$,1??(B" . nil)
+ ("$,1>h(B" . "$,43C(B")
+ ("$,address@hidden(B" . nil)
+ ("$,1>i(B" . "$,43D(B")
+ ("$,1?A(B" . "\$,44(B")
+ ("$,1>j(B" . "$,43E(B")
+ ("$,1?B(B" . "\$,45 (B")
+ ("$,1>k(B" . "$,43F4(B")
+ ("$,1?C(B" . "\$,45$(B")
+ ("$,1?`(B" . "$,43F5 (B")
+ ("$,1?D(B" . "\$,45%(B")
+ ;;("$,1>l(B" . nil) ; not implemented.
+ ;;("$,1?a(B" . nil)
+ ("$,1>n(B" . "$,43G(B")
+ ("$,1>o(B" . "$,43H(B")
+ ("$,1>p(B" . "$,43I(B")
+ ("$,1?F(B" . "\$,45&(B")
+ ("$,1?G(B" . "\$,45&4~(B")
+ ("$,1?H(B" . "\$,45&5'(B")
+ ("$,1>r(B" . "$,43J(B")
+ ("$,1?J(B" . "$,45&5 (B")
+ ("$,1>s(B" . "$,43K(B")
+ ("$,1?K(B" . "\$,45&5 4~(B")
+ ("$,1>t(B" . "$,43L(B")
+ ("$,1?L(B" . "\$,45((B")
+ ("$,1>b(B" . "$,43M(B")
+ ("$,1>c(B" . "$,43N(B")
+ ("$,1>u?M(B" . "$,43O5)(B") ("$,1>u(B" . "$,43O(B")
("$,1>u??(B" . "$,43P(B") ("$,1>address@hidden(B" . "$,43P4~(B")
+ ("$,1>v?M(B" . "$,43S5)(B") ("$,1>v(B" . "$,43S(B")
("$,1>v??(B" . "$,43T(B") ("$,1>address@hidden(B" . "$,43T4~(B")
("$,1>v?F(B" . "$,43S5&(B") ("$,1>v?G(B" . "$,43S5&4~(B")
("$,1>v?H(B" . "$,43S5&5'(B") ("$,1>v?J(B" . "$,43S5&5&5 (B")
("$,1>v?K(B" . "$,43S5&5&5 4~(B") ("$,1>v?L(B" . "$,43S5((B")
+ ("$,1>w?M(B" . "$,43V5)(B") ("$,1>w(B" . "$,43V(B")
("$,1>w??(B" . "$,43W(B") ("$,1>address@hidden(B" . "$,43W4~(B")
+ ("$,1>x?M(B" . "$,43Y5)(B") ("$,1>x(B" . "$,43Y(B")
("$,1>x??(B" . "$,43Z(B") ("$,1>address@hidden(B" . "$,43Z4~(B")
+ ("$,1>y?M(B" . "$,43\5)(B") ("$,1>y(B" . "$,43\(B")
+ ("$,1>z?M(B" . "$,43^5)(B") ("$,1>z(B" . "$,43^(B")
("$,1>z??(B" . "$,43_(B") ("$,1>address@hidden(B" . "$,43_4~(B")
+ ("$,1>{?M(B" . "$,43a5)(B") ("$,1>{(B" . "$,43a(B")
("$,1>{??(B" . "$,43b(B") ("$,1>address@hidden(B" . "$,43b4~(B")
+ ("$,1>|?M(B" . "$,43d5)(B") ("$,1>|(B" . "$,43d(B")
("$,1>|??(B" . "$,43f(B") ("$,1>|address@hidden(B" . "$,43f4~(B")
("$,1>|?F(B" . "$,43e5&(B") ("$,1>|?G(B" . "$,43e5&4~(B")
("$,1>|?H(B" . "$,43e5&5'(B") ("$,1>|?J(B" . "$,43e5&5&5 (B")
("$,1>|?K(B" . "$,43e5&5&5 4~(B") ("$,1>|?L(B" . "$,43e5((B")
+ ("$,1>}?M(B" . "$,44a4z3h45)(B") ("$,1>}(B" . "$,44a4z3h4(B")
("$,1>}??(B" . "$,44b3h4(B") ("$,1>address@hidden(B" . "$,44b3h44~(B")
("$,1>}?B(B". "$,44a4z3h5 (B") ("$,1>}?J(B". "$,44a5&3h5 (B")
("$,1>}?K(B". "$,44a5&3h5 4~(B")
+ ("$,1>~?M(B" . "$,43j5)(B") ("$,1>~(B" . "$,43j(B")
+ ("$,1>?M(B" . "$,43m5)(B") ("$,1>(B" . "$,43l(B")
("$,1?#?>(B" . "$,43m4{(B") ("$,1>??(B" . "$,43n(B")
("$,1>address@hidden(B" . "$,43n4~(B") ("$,1>?F(B" . "$,43m5&(B")
("$,1>?G(B" . "$,43m5&4~(B") ("$,1>?H(B" . "$,43m5&5'(B")
("$,1>?J(B" . "$,43m5&5&5 (B") ("$,1>?K(B" . "$,43m5&5&5 4~(B")
("$,1>?L(B" . "$,43m5((B")
+ ("$,1? ?M(B" . "$,43p5)(B") ("$,1? (B" . "$,43p(B") ("$,1?
??(B" . "$,43q(B") ("$,1? address@hidden(B" . "$,43q4~(B")
+ ("$,1?!?M(B" . "$,43s5)(B") ("$,1?!(B" . "$,43s(B")
("$,1?!??(B" . "$,43t(B") ("$,address@hidden(B" . "$,43t4~(B")
+ ("$,1?"?M(B" . "$,43v5)(B") ("$,1?"(B" . "$,43v(B")
("$,1?"??(B" . "$,43w(B") ("$,1?"address@hidden(B" . "$,43w4~(B")
+ ("$,1?#?M(B" . "$,43z5)(B") ("$,1?#(B" . "$,43y(B")
("$,1?#?>(B" . "$,43z4{(B") ("$,1?#??(B" . "$,43{(B")
("$,address@hidden(B" . "$,43{4~(B") ("$,1?#?F(B" . "$,43z5&(B")
("$,1?#?G(B" . "$,43z5&4~(B") ("$,1?#?H(B" . "$,43z5&5'(B")
("$,1?#?J(B" . "$,43z5&5&5 (B") ("$,1?#?K(B" . "$,43z5&5&5 4~(B")
("$,1?#?L(B" . "$,43z5((B")
+ ("$,1?$?M(B" . "$,43}5)(B") ("$,1?$(B" . "$,43}(B")
("$,1?$??(B" . "$,43~(B") ("$,address@hidden(B" . "$,43~4~(B")
+ ("$,1?%?M(B" . "$,44B5)(B") ("$,1?%(B" . "$,44B(B")
("$,1?%??(B" . "$,44C(B") ("$,address@hidden(B" . "$,44C4~(B")
+ ("$,1?&?M(B" . "$,44E5)(B") ("$,1?&(B" . "$,44E(B")
("$,1?&??(B" . "$,44F(B") ("$,1?&address@hidden(B" . "$,44F4~(B")
+ ("$,1?'?M(B" . "$,44H5)(B") ("$,1?'(B" . "$,44H(B")
("$,1?'??(B" . "$,44I(B") ("$,1?'address@hidden(B" . "$,44I4~(B")
+ ("$,1?(?M(B" . "$,44K5)(B") ("$,1?((B" . "$,44K(B")
("$,1?(??(B" . "$,44L(B") ("$,1?(address@hidden(B" . "$,44L4~(B")
+ ("$,1?*?M(B" . "$,44N5)(B") ("$,1?*(B" . "$,44N(B")
("$,1?*??(B" . "$,44O(B") ("$,address@hidden(B" . "$,44O4~(B")
("$,1?*?A(B" . "$,44N5"(B") ("$,1?*?B(B" . "$,44N5#(B") ("$,1?*?J(B"
. "$,44N5&5#(B") ("$,1?*?K(B" . "$,44N5&5#4~(B")
+ ("$,1?+?M(B" . "$,44Q5)(B") ("$,1?+(B" . "$,44Q(B")
("$,1?+??(B" . "$,44R(B") ("$,address@hidden(B" . "$,44R4~(B")
("$,1?+?A(B" . "$,44Q5"(B") ("$,1?+?B(B" . "$,44Q5#(B") ("$,1?+?J(B"
. "$,44Q5&5#(B") ("$,1?+?K(B" . "$,44Q5&5#4~(B")
+ ("$,1?,?M(B" . "$,44W5)(B") ("$,1?,(B" . "$,44V(B")
("$,1?,?>(B". "$,44W4{(B") ("$,1?,??(B" . "$,44X(B")
("$,1?,address@hidden(B" . "$,44X4~(B") ("$,1?,?F(B" . "$,44W5&(B")
("$,1?,?G(B" . "$,44W5&4~(B") ("$,1?,?H(B" . "$,44W5&5'(B")
("$,1?,?J(B" . "$,44W5&5&5 (B") ("$,1?,?K(B" . "$,44W5&5&5 4~(B")
("$,1?,?L(B" . "$,44W5((B")
+ ("$,1?-?M(B" . "$,44Z5)(B") ("$,1?-(B" . "$,44Z(B")
("$,1?-??(B" . "$,44[(B") ("$,address@hidden(B" . "$,44[4~(B")
+ ("$,1?.?M(B" . "$,44h5!5)(B") ("$,1?.(B" . "$,44h4z4(B")
("$,1?.?>(B" . "$,44h4z5!4{(B") ("$,1?.??(B" . "$,44i4(B")
("$,address@hidden(B" . "$,44i44~(B") ("$,1?.?J(B". "$,44h5&5 (B")
("$,1?.?K(B". "$,44h5&5 4~(B")
+ ("$,1?/?M(B" . "$,44^4z5!5)(B") ("$,1?/(B" . "$,44^4z4(B")
("$,1?/?>(B" . "$,44^4z5!4{(B")("$,1?/??(B" . "$,44_4(B")
("$,1?/address@hidden(B" . "$,44_44~(B") ("$,1?/?J(B" . "$,44^5&5 (B")
("$,1?/?K(B" . "$,44^5&5 4~(B")
+ ("$,1?0?M(B" . "$,44a5)(B") ("$,1?0(B" . "$,44a(B")
("$,1?0??(B" . "$,44b(B") ("$,address@hidden(B" . "$,44b4~(B")
+ ("$,1?0?M(B" . "$,44a5)(B") ("$,1?0(B" . "$,44a(B")
("$,1?0??(B" . "$,44b(B") ("$,address@hidden(B" . "$,44b4~(B")
+ ("$,1?2?M(B" . "$,44e5)(B") ("$,1?2(B" . "$,44d(B")
("$,1?2?>(B" . "$,44e4{(B") ("$,1?2??(B" . "$,44f(B")
("$,address@hidden(B" . "$,44f4~(B") ("$,1?2?F(B" . "$,44e5&(B")
("$,1?2?G(B" . "$,44e5&4~(B") ("$,1?2?H(B" . "$,44e5&5'(B")
("$,1?2?J(B" . "$,44e5&5&5 (B") ("$,1?2?K(B" . "$,44e5&5&5 4~(B")
("$,1?2?L(B" . "$,44e5((B")
+ ("$,1?5?M(B" . "$,44h5)(B") ("$,1?5(B" . "$,44h(B")
("$,1?5??(B" . "$,44i(B") ("$,address@hidden(B" . "$,44i4~(B")
("$,1?5?A(B" . "$,44h5"(B") ("$,1?5?B(B" . "$,44h5#(B") ("$,1?5?J(B"
. "$,44h5&5#(B") ("$,1?5?K(B" . "$,44h5&5#4~(B")
+ ("$,1?6?M(B" . "$,44k5)(B") ("$,1?6(B" . "$,44k(B")
("$,1?6??(B" . "$,44l(B") ("$,address@hidden(B" . "$,44l4~(B")
+ ("$,1?7?M(B" . "$,44n5)(B") ("$,1?7(B" . "$,44n(B")
("$,1?7??(B" . "$,44o(B") ("$,address@hidden(B" . "$,44o4~(B")
+ ("$,1?8?M(B" . "$,44q5)(B") ("$,1?8(B" . "$,44q(B")
("$,1?8??(B" . "$,44r(B") ("$,address@hidden(B" . "$,44r4~(B")
+ ("$,1?9?M(B" . "$,44t5)(B") ("$,1?9(B" . "$,44t(B")
("$,1?9??(B" . "$,44u(B") ("$,address@hidden(B" . "$,44u4~(B")
+ ("$,1?3?M(B" . "$,44w5)(B") ("$,1?3(B" . "$,44w(B")
("$,1?3??(B" . "$,44x(B") ("$,address@hidden(B" . "$,44x4~(B"))
+ "Kannada characters to glyphs conversion table.
+ Default value contains only the basic rules.")
+
+ (defvar knd-char-glyph-hash
+ (let* ((hash (make-hash-table :test 'equal)))
+ (mapc (function (lambda (x) (puthash (car x) (cdr x) hash)))
+ knd-char-glyph)
+ hash))
+
+ (defvar knd-char-glyph-regexp
+ (kannada-regexp-of-hashtbl-keys knd-char-glyph-hash))
+
+ (defvar knd-conjunct-glyph
+ '(("$,1>u(B" . "$,43Q(B") ("$,1>v(B" . "$,43U(B") ("$,1>w(B" .
"$,43X(B") ("$,1>x(B" . "$,43[(B") ("$,1>y(B" . "$,43](B")
+ ("$,1>z(B" . "$,43`(B") ("$,1>{(B" . "$,43c(B") ("$,1>|(B" .
"$,43g(B") ("$,1>}(B" . "$,43i(B") ("$,1>~(B" . "$,43k(B")
+ ("$,1>(B" . "$,43o(B") ("$,1? (B" . "$,43r(B") ("$,1?!(B" .
"$,43u(B") ("$,1?"(B" . "$,43x(B") ("$,1?#(B" . "$,43|(B")
+ ("$,1?$(B" . "$,44A(B") ("$,1?%(B" . "$,44D(B") ("$,1?&(B" .
"$,44G(B") ("$,1?'(B" . "$,44J(B") ("$,1?((B" . "$,44M(B")
+ ("$,1?*(B" . "$,44P(B") ("$,1?+(B" . "$,44U(B") ("$,1?,(B" .
"$,44Y(B") ("$,1?-(B" . "$,44\(B") ("$,1?.(B" . "$,44](B")
+ ("$,1?/(B" . "$,44`(B") ("$,1?0(B" . "$,44c(B") ("$,1?2(B" .
"$,44g(B") ("$,1?3(B" . "$,44y(B") ("$,1?5(B" . "$,44j(B")
+ ("$,1?6(B" . "$,44m(B") ("$,1?7(B" . "$,44p(B") ("$,1?8(B" .
"$,44s(B") ("$,1?9(B" . "$,44v(B"))
+ "Kannada characters to conjunct glyphs conversion table.")
+
+ (defvar knd-conjunct-glyph-hash
+ (let* ((hash (make-hash-table :test 'equal)))
+ (mapc (function (lambda (x) (puthash (car x) (cdr x) hash)))
+ knd-conjunct-glyph)
+ hash))
+
+ (defvar knd-conjunct-glyph-regexp
+ (kannada-regexp-of-hashtbl-vals knd-conjunct-glyph-hash))
+
+ (mapc
+ (function (lambda (x)
+ (put-char-code-property (aref (cdr x) 0) 'reference-point '(5 . 3))))
+ knd-conjunct-glyph)
+
+ ;; glyph-to-glyph conversion table.
+ ;; it is supposed that glyphs are ordered in
+ ;; [consonant/nukta] - [matra/virama] - [preceding-r] - [anuswar].
+
+ (defvar knd-glyph-glyph
+ '(("$,45$4A(B" . "$,45*(B")
+ ("$,45'4A(B" . "$,45+(B")
+ ("$,44A3g(B" . "$,45,(B")
+ ("$,45$3Q(B" . "$,45-(B")))
+
+ (defvar knd-glyph-glyph-hash
+ (let* ((hash (make-hash-table :test 'equal)))
+ (mapc (function (lambda (x) (puthash (car x) (cdr x) hash)))
+ knd-glyph-glyph)
+ hash))
+ (defvar knd-glyph-glyph-regexp
+ (kannada-regexp-of-hashtbl-keys knd-glyph-glyph-hash))
+
+ (defun knd-charseq (from &optional to)
+ (if (null to) (setq to from))
+ (mapcar (function (lambda (x) (indian-glyph-char x 'kannada)))
+ (kannada-range from to)))
+
+ (defvar knd-glyph-cv
+ (append
+ (knd-charseq #x40 #x50)
+ (knd-charseq #x52 #x54)
+ (knd-charseq #x56 #x57)
+ (knd-charseq #x59 #x5a)
+ (knd-charseq #x5c)
+ (knd-charseq #x5e #x5f)
+ (knd-charseq #x61 #x62)
+ (knd-charseq #x64 #x66)
+ (knd-charseq #x6a)
+ (knd-charseq #x6c #x6e)
+ (knd-charseq #x70 #x71)
+ (knd-charseq #x73 #x74)
+ (knd-charseq #x76 #x77)
+ (knd-charseq #x79 #x7b)
+ (knd-charseq #x7d #x7e)
+ (knd-charseq #xa2 #xa3)
+ (knd-charseq #xa5 #xa6)
+ (knd-charseq #xa8 #xa9)
+ (knd-charseq #xab #xac)
+ (knd-charseq #xae #xaf)
+ (knd-charseq #xb1 #xb2)
+ (knd-charseq #xb6 #xb8)
+ (knd-charseq #xb6 #xb8)
+ (knd-charseq #xba #xbb)
+ (knd-charseq #xbe #xbf)
+ (knd-charseq #xc1 #xc2)
+ (knd-charseq #xc4 #xc6)
+ (knd-charseq #xc8 #xc9)
+ (knd-charseq #xcb #xcc)
+ (knd-charseq #xce #xcf)
+ (knd-charseq #xd1 #xd2)
+ (knd-charseq #xd4 #xd5)
+ (knd-charseq #xd7 #xd8)
+ (knd-charseq #xc3))
+ "Kannada Consonants/Vowels/Nukta Glyphs")
+
+ (defvar knd-glyph-space
+ (knd-charseq #xb3 #xb4)
+ "Kannada Spacing Glyphs")
+
+ (defvar knd-glyph-right-modifier
+ (append
+ (knd-charseq #xdb #xdd)
+ (knd-charseq #xdf)
+ (knd-charseq #xe0 #xe3)
+ (knd-charseq #xe9))
+ "Kannada Modifiers attached at the right side.")
+
+ (defvar knd-glyph-right-modifier-regexp
+ (concat "[" knd-glyph-right-modifier "]"))
+
+ (defvar knd-glyph-jha-tail
+ (knd-charseq #x68)
+ "Kannada tail for jha.")
+
+ (defvar knd-glyph-top-matra
+ (append
+ (knd-charseq #xda)
+ (knd-charseq #xdd)
+ (knd-charseq #xe6)
+ (knd-charseq #xe8))
+ "Kannada Matras attached at the top side.")
+
+ (defvar knd-glyph-bottom-matra
+ (append
+ (knd-charseq #xe4 #xe5)
+ (knd-charseq #xe7))
+ "Kannada Matras attached at the bottom.")
+
+ (defvar knd-glyph-end-marks
+ (append
+ (knd-charseq #x25)
+ (knd-charseq #x4d #x4e)
+ (knd-charseq #xde))
+ "Kannada end marks: arkavattu, virama, au and diirghaa.")
+
+ (defvar knd-glyph-bottom-modifier
+ (append
+ (knd-charseq #x51)
+ (knd-charseq #x55)
+ (knd-charseq #x58)
+ (knd-charseq #x5b)
+ (knd-charseq #x5d)
+ (knd-charseq #x60)
+ (knd-charseq #x63)
+ (knd-charseq #x67)
+ (knd-charseq #x69)
+ (knd-charseq #x6b)
+ (knd-charseq #x6f)
+ (knd-charseq #x72)
+ (knd-charseq #x75)
+ (knd-charseq #x78)
+ (knd-charseq #x7c)
+ (knd-charseq #xa1)
+ (knd-charseq #xa4)
+ (knd-charseq #xa7)
+ (knd-charseq #xaa)
+ (knd-charseq #xad)
+ (knd-charseq #xb0)
+ (knd-charseq #xb5)
+ (knd-charseq #xb9)
+ (knd-charseq #xbc #xbd)
+ (knd-charseq #xc0)
+ (knd-charseq #xc3)
+ (knd-charseq #xc7)
+ (knd-charseq #xca)
+ (knd-charseq #xcd)
+ (knd-charseq #xd0)
+ (knd-charseq #xd3)
+ (knd-charseq #xd6)
+ (knd-charseq #xd9)
+ (knd-charseq #xea #xef))
+ "Kannada Modifiers attached at the bottom.")
+
+ (defvar knd-glyph-order
+ `((,knd-glyph-cv . 1)
+ (,knd-glyph-top-matra . 2)
+ (,knd-glyph-jha-tail . 3)
+ (,knd-glyph-right-modifier . 4)
+ (,knd-glyph-space . 5)
+ (,knd-glyph-bottom-modifier . 5)
+ (,knd-glyph-bottom-matra . 6)
+ (,knd-glyph-end-marks . 7)
+ ))
+
+ (mapc
+ (function (lambda (x)
+ (mapc
+ (function (lambda (y)
+ (put-char-code-property y 'composition-order (cdr x))))
+ (car x))))
+ knd-glyph-order)
+
+ (defun kannada-compose-syllable-string (string)
+ (with-temp-buffer
+ (insert (decompose-string string))
+ (kannada-compose-syllable-region (point-min) (point-max))
+ (buffer-string)))
+
+ ;; kch
+ (defun kannada-compose-syllable-region (from to)
+ "Compose kannada syllable in region FROM to TO."
+ (let ((glyph-str nil) (cons-num 0) (glyph-str-list nil)
+ (last-virama nil) (preceding-r nil) (last-modifier nil)
+ (last-char (char-before to)) match-str pos
+ glyph-block split-pos (conj nil) (rest nil))
+ (save-excursion
+ (save-restriction
+ ;;; *** char-to-glyph conversion ***
+ ;; Special rule 1. -- Last virama must be preserved.
+ (if (eq last-char ?$,1?M(B)
+ (progn
+ (setq last-virama t)
+ (narrow-to-region from (1- to)))
+ (narrow-to-region from to))
+ (goto-char (point-min))
+ ;; Special rule 2. -- preceding "r virama" must be modifier.
+ (when (looking-at "$,1?0?M(B.")
+ (setq preceding-r t)
+ (goto-char (+ 2 (point))))
+ ;; remove conjunct consonants
+ (while (re-search-forward knd-char-glyph-regexp nil t)
+ (setq match-str (match-string 0))
+ (if (and (string-match kannada-consonant match-str)
+ (> cons-num 0))
+ (progn
+ (setq conj (concat conj (gethash (match-string 0 match-str)
+ knd-conjunct-glyph-hash)))
+ (setq match-str (replace-match "" t nil match-str))
+ (if (string-match "$,1?M(B" rest)
+ (setq rest (replace-match "" t nil rest)))))
+ (setq rest (concat rest match-str))
+ ;; count the number of consonant-glyhs.
+ (if (string-match kannada-consonant match-str)
+ (setq cons-num (1+ cons-num))))
+ ;; translate the rest characters into glyphs
+ (setq pos 0)
+ (while (string-match knd-char-glyph-regexp rest pos)
+ (setq match-str (match-string 0 rest))
+ (setq pos (match-end 0))
+ (setq glyph-str
+ (concat glyph-str (gethash match-str knd-char-glyph-hash))))
+
+ (if conj (setq glyph-str (concat glyph-str conj)))
+ (if last-virama (setq glyph-str (concat glyph-str "$,45)(B"))
+ (goto-char (point-min))
+ (if (re-search-forward kannada-consonant-needs-twirl nil t)
+ (progn
+ (setq match-str (match-string 0))
+ (setq glyph-str (concat glyph-str "$,44z(B")))))
+ ;; preceding-r must be attached
+ (if preceding-r
+ (setq glyph-str (concat glyph-str "$,43%(B")))
+ ;;; *** glyph-to-glyph conversion ***
+ (when (string-match knd-glyph-glyph-regexp glyph-str)
+ (setq glyph-str
+ (replace-match (gethash (match-string 0 glyph-str)
+ knd-glyph-glyph-hash)
+ nil t glyph-str)))
+ ;;; *** glyph reordering ***
+ (while (setq split-pos (string-match "$,45)(B\\|.$" glyph-str))
+ (setq glyph-block (substring glyph-str 0 (1+ split-pos)))
+ (setq glyph-str (substring glyph-str (1+ split-pos)))
+ (setq
+ glyph-block
+ (sort (string-to-list glyph-block)
+ (function (lambda (x y)
+ (< (get-char-code-property x 'composition-order)
+ (get-char-code-property y 'composition-order))))))
+ (setq glyph-str-list (nconc glyph-str-list glyph-block)))
+ ;;; *** insert space glyphs for kerning ***
+ (if (> cons-num 0)
+ (let ((curr glyph-str-list) (prev nil) (last-bott nil) bott co)
+ (while curr
+ (setq co (get-char-code-property
+ (car curr) 'composition-order)
+ bott (or (eq co 5) (eq co 6)))
+ (if (and bott last-bott)
+ (setcdr prev (cons ?$,44T(B curr)))
+ (setq last-bott bott prev curr curr (cdr curr)))))
+ ;; 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 'knd-util)
+
+ ;;; arch-tag: 78d32230-a960-46a5-b622-61ed6ffcf8fc
+ ;;; knd-util.el ends here
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