--- /dev/null
+;;; malayalam.el --- Support for Malayalam -*- coding: iso-2022-7bit; no-byte-compile: t -*-
+
+;; Copyright (C) 2003 Free Software Foundation, Inc.
+
+;; Maintainer: KAWABATA, Taichi <kawabata@m17n.org>
+;; Keywords: multilingual, Indian, Malayalam
+
+;; 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.
+
+;;; Commentary:
+
+;; This file defines language-info of Malayalam script.
+
+;;; Code:
+
+(set-language-info-alist
+ "Malayalam" '((charset mule-unicode-0100-24ff indian-glyph )
+ ;; indian-2-column
+ ;; comment out later
+ ;; )
+ (coding-system utf-8)
+ (coding-priority utf-8)
+ (input-method . "malayalam-itrans")
+ (features mlm-util)
+ (documentation . "\
+South Indian language Malayalam is supported in this language environment."))
+ '("Indian"))
+
+(provide 'malayalam)
+
+;;; malayalam.el ends here
--- /dev/null
+;;; mlm-util.el --- support for composing malayalam characters -*-coding: iso-2022-7bit;-*-
+
+;; Copyright (C) 2003 Free Software Foundation, Inc.
+
+;; Maintainer: KAWABATA, Taichi <kawabata@m17n.org>
+;; Keywords: multilingual, Malayalam
+
+;; 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. 11. 2003
+
+;;; Commentary:
+
+;; This file provides character(Unicode) to glyph(CDAC) conversion and
+;; composition of Malayalam script characters.
+
+;;; Code:
+
+;; Malayalam 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|visargam)?
+;; 2. syllable : maximum of 5 consecutive consonants. (e.g. kartsnya)
+;; ((CH)?(CH)?(CH)?CH)?C(H|M?(A|D)?)?
+
+(defconst malayalam-consonant
+ "[\e$,1@5\e(B-\e$,1@Y\e(B]")
+
+(defconst malayalam-composable-pattern
+ (concat
+ "\\([\e$,1@%\e(B-\e$,1@4\e(B][\e$,1@"\e(B]?\\)\\|\e$,1@#\e(B"
+ "\\|\\("
+ "\\(?:\\(?:[\e$,1@5\e(B-\e$,1@Y\e(B]\e$,1@m\e(B\\)?\\(?:[\e$,1@5\e(B-\e$,1@Y\e(B]\e$,1@m\e(B\\)?\\(?:[\e$,1@5\e(B-\e$,1@Y\e(B]\e$,1@m\e(B\\)?[\e$,1@5\e(B-\e$,1@Y\e(B]\e$,1@m\e(B\\)?"
+ "[\e$,1@5\e(B-\e$,1@Y\e(B]\\(?:\e$,1@m\e(B\\|[\e$,1@^\e(B-\e$,1@c@f@g@h@j@j@k@l\e(B]?[\e$,1@"@m\e(B]?\\)?"
+ "\\)")
+ "Regexp matching a composable sequence of Malayalam characters.")
+
+;;;###autoload
+(defun malayalam-compose-region (from to)
+ (interactive "r")
+ (save-excursion
+ (save-restriction
+ (narrow-to-region from to)
+ (goto-char (point-min))
+ (while (re-search-forward malayalam-composable-pattern nil t)
+ (malayalam-compose-syllable-region (match-beginning 0)
+ (match-end 0))))))
+(defun malayalam-compose-string (string)
+ (with-temp-buffer
+ (insert (decompose-string string))
+ (malayalam-compose-region (point-min) (point-max))
+ (buffer-string)))
+
+(defun malayalam-post-read-conversion (len)
+ (save-excursion
+ (save-restriction
+ (let ((buffer-modified-p (buffer-modified-p)))
+ (narrow-to-region (point) (+ (point) len))
+ (malayalam-compose-region (point-min) (point-max))
+ (set-buffer-modified-p buffer-modified-p)
+ (- (point-max) (point-min))))))
+
+(defun malayalam-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 malayalam-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 malayalam-composition-function (from to pattern &optional string)
+ "Compose Malayalam characters in REGION, or STRING if specified.
+Assume that the REGION or STRING must fully match the composable
+PATTERN regexp."
+ (if string (malayalam-compose-syllable-string string)
+ (malayalam-compose-syllable-region from to))
+ (- to from))
+
+;; Register a function to compose Malayalam characters.
+(mapc
+ (function (lambda (ucs)
+ (aset composition-function-table (decode-char 'ucs ucs)
+ (list (cons malayalam-composable-pattern
+ 'malayalam-composition-function)))))
+ (nconc '(#x0d02 #x0d03) (malayalam-range #x0d05 #x0d39)))
+
+;; Notes on conversion steps.
+
+;; 1. chars to glyphs
+;;
+;; Simple replacement of characters to glyphs is done.
+
+;; 2. glyphs reordering.
+;;
+;; Two special reordering rule takes place.
+;; a. following "\e$,46[\e(B" goes to the front.
+;; b. following "\e$,46S6S\e(B", "\e$,46S\e(B" or "\e$,46T\e(B" goes to the front.
+;; This reordering occurs only to the last cluster of consonants.
+;; Preceding consonants with halant characters are not affected.
+
+;; 3. Composition.
+;;
+;; left modifiers will be attached at the left.
+;; others will be attached right.
+
+(defvar mlm-char-glyph
+ '(;; various signs
+ ("\e$,1@"\e(B" . "\e$,46W\e(B")
+ ("\e$,1@#\e(B" . "\e$,46X\e(B")
+ ;; Independent Vowels
+ ("\e$,1@%\e(B" . "\e$,46!\e(B")
+ ("\e$,1@&\e(B" . "\e$,46"\e(B")
+ ("\e$,1@'\e(B" . "\e$,46#\e(B")
+ ("\e$,1@(\e(B" . "\e$,46#6U\e(B")
+ ("\e$,1@)\e(B" . "\e$,46$\e(B")
+ ("\e$,1@*\e(B" . "\e$,46$6U\e(B")
+ ("\e$,1@+\e(B" . "\e$,46%\e(B")
+ ("\e$,1@,\e(B" . "nil") ;; not in present use, not supported.
+ ("\e$,1@.\e(B" . "\e$,46&\e(B")
+ ("\e$,1@/\e(B" . "\e$,46'\e(B")
+ ("\e$,1@0\e(B" . "\e$,46S6&\e(B")
+ ("\e$,1@2\e(B" . "\e$,46(\e(B")
+ ("\e$,1@3\e(B" . "\e$,46(6M\e(B")
+ ("\e$,1@4\e(B" . "\e$,46(6U\e(B")
+ ;; Consonants
+ ("\e$,1@5\e(B" . "\e$,46)\e(B")
+ ("\e$,1@5@m@5\e(B" . "\e$,47!\e(B")
+ ("\e$,1@5@m@7\e(B" . "\e$,47"\e(B")
+ ("\e$,1@5@m@W\e(B" . "\e$,47#\e(B")
+ ("\e$,1@5@m@?\e(B" . "\e$,47N\e(B") ;; ?
+ ("\e$,1@5@m@D\e(B" . "\e$,47`\e(B")
+ ("\e$,1@5@m@F\e(B" . "\e$,47f\e(B") ;; ? ;; vowel u?
+ ("\e$,1@5@m@5@m@F\e(B" . "\e$,47g\e(B") ;; ? ;; vowel u?
+
+ ("\e$,1@6\e(B" . "\e$,46*\e(B")
+
+ ("\e$,1@7\e(B" . "\e$,46+\e(B")
+ ("\e$,1@7@m@7\e(B" . "\e$,47$\e(B")
+ ("\e$,1@7@m@R\e(B" . "\e$,47%\e(B")
+ ("\e$,1@7@m@N\e(B" . "\e$,47\\e(B")
+ ("\e$,1@7@m@H\e(B" . "\e$,47a\e(B")
+
+ ("\e$,1@8\e(B" . "\e$,46,\e(B")
+
+ ("\e$,1@9\e(B" . "\e$,46-\e(B")
+ ("\e$,1@9@m@5\e(B" . "\e$,47&\e(B")
+ ("\e$,1@9@m@9\e(B" . "\e$,47'\e(B")
+ ("\e$,1@9@m@5@m@F\e(B" . "\e$,47h\e(B") ;; ? ;; vowel u?
+
+ ("\e$,1@:\e(B" . "\e$,46.\e(B")
+ ("\e$,1@:@m@:\e(B" . "\e$,47(\e(B") ;; duplicate
+ ("\e$,1@:@m@;\e(B" . "\e$,47Q\e(B") ;; ?
+
+ ("\e$,1@;\e(B" . "\e$,46/\e(B")
+
+ ("\e$,1@<\e(B" . "\e$,460\e(B")
+ ("\e$,1@<@m@<\e(B" . "\e$,47V\e(B")
+ ("\e$,1@<@m@>\e(B" . "\e$,47Z\e(B")
+
+ ("\e$,1@=\e(B" . "\e$,461\e(B")
+
+ ("\e$,1@>\e(B" . "\e$,462\e(B")
+ ("\e$,1@>@m@:\e(B" . "\e$,47)\e(B")
+ ("\e$,1@>@m@>\e(B" . "\e$,47*\e(B")
+
+ ("\e$,1@?\e(B" . "\e$,463\e(B")
+ ("\e$,1@?@m@?\e(B" . "\e$,47+\e(B")
+
+ ("\e$,1@@\e(B" . "\e$,464\e(B")
+ ("\e$,1@A\e(B" . "\e$,465\e(B")
+ ("\e$,1@A@m@A\e(B" . "\e$,47M\e(B")
+ ("\e$,1@B\e(B" . "\e$,466\e(B")
+
+ ("\e$,1@C\e(B" . "\e$,467\e(B")
+ ("\e$,1@C@m\e(B" . "\e$,47,\e(B") ;; half consonant
+ ("\e$,1@C@m@?\e(B" . "\e$,47-\e(B")
+ ("\e$,1@C@m@C\e(B" . "\e$,47.\e(B")
+ ("\e$,1@C@m@N\e(B" . "\e$,47W\e(B")
+ ("\e$,1@C@m@G\e(B" . "\e$,47^\e(B") ;; ?
+ ("\e$,1@C@m@V\e(B" . "\e$,47i\e(B") ;; ?
+
+ ("\e$,1@D\e(B" . "\e$,468\e(B")
+ ("\e$,1@D@m@D\e(B" . "\e$,47/\e(B")
+ ("\e$,1@D@m@E\e(B" . "\e$,470\e(B")
+ ("\e$,1@D@m@X\e(B" . "\e$,47U\e(B")
+ ("\e$,1@D@m@M\e(B" . "\e$,47[\e(B")
+ ("\e$,1@D@m@N\e(B" . "\e$,47_\e(B")
+ ("\e$,1@D@m@F\e(B" . "\e$,47j\e(B") ;; ? ;; vowel u ?
+
+ ("\e$,1@E\e(B" . "\e$,469\e(B")
+
+ ("\e$,1@F\e(B" . "\e$,46:\e(B")
+ ("\e$,1@F@m@F\e(B" . "\e$,471\e(B")
+ ("\e$,1@F@m@G\e(B" . "\e$,472\e(B")
+
+ ("\e$,1@G\e(B" . "\e$,46;\e(B")
+
+ ("\e$,1@H\e(B" . "\e$,46<\e(B")
+ ("\e$,1@H@m\e(B" . "\e$,473\e(B") ;; half consonant
+ ("\e$,1@H@m@D\e(B" . "\e$,474\e(B")
+ ("\e$,1@H@m@F\e(B" . "\e$,475\e(B")
+ ("\e$,1@H@m@H\e(B" . "\e$,476\e(B")
+ ("\e$,1@H@m@N\e(B" . "\e$,477\e(B")
+ ("\e$,1@H@m@G\e(B" . "\e$,47T\e(B")
+ ("\e$,1@H@m@E\e(B" . "\e$,47Y\e(B")
+ ("\e$,1@H@m@Q\e(B" . "\e$,47b\e(B")
+ ("\e$,1@H@m@V\e(B" . "\e$,47k\e(B") ;; ?
+ ("\e$,1@H@m@H@m@V\e(B" . "\e$,47l\e(B") ;; ?
+
+ ("\e$,1@J\e(B" . "\e$,46=\e(B")
+ ("\e$,1@J@m@J\e(B" . "\e$,478\e(B") ;; duplicate
+ ("\e$,1@J@m@R\e(B" . "\e$,479\e(B") ;; lakar
+
+ ("\e$,1@K\e(B" . "\e$,46>\e(B")
+
+ ("\e$,1@L\e(B" . "\e$,46?\e(B")
+ ("\e$,1@L@m@L\e(B" . "\e$,47:\e(B") ;; duplicate
+ ("\e$,1@L@m@R\e(B" . "\e$,47;\e(B") ;; lakar
+ ("\e$,1@L@m@G\e(B" . "\e$,47O\e(B") ;; ?
+ ("\e$,1@L@m@F\e(B" . "\e$,47P\e(B") ;; ?
+
+ ("\e$,1@M\e(B" . "\e$,46@\e(B")
+
+ ("\e$,1@N\e(B" . "\e$,46A\e(B")
+ ("\e$,1@N@m@J\e(B" . "\e$,47<\e(B")
+ ("\e$,1@N@m@N\e(B" . "\e$,47=\e(B")
+ ("\e$,1@N@m@R\e(B" . "\e$,47>\e(B") ;; lakar
+
+ ("\e$,1@O\e(B" . "\e$,46B\e(B")
+ ("\e$,1@O@m@O\e(B" . "\e$,47?\e(B") ;; duplicate
+ ("\e$,1@O@m@5@m@5\e(B" . "\e$,47m\e(B") ;; ?
+
+ ("\e$,1@P\e(B" . "\e$,46C\e(B")
+ ("\e$,1@P@m\e(B" . "\e$,47@\e(B")
+
+ ("\e$,1@Q\e(B" . "\e$,46D\e(B")
+ ("\e$,1@Q@m\e(B" . "\e$,47@\e(B") ;; same glyph as "\e$,1@P@m\e(B"
+ ;;("\e$,1@Q@m@Q\e(B" . "\e$,47A\e(B")
+ ("\e$,1@Q@m@Q\e(B" . "\e$,47d\e(B")
+
+ ("\e$,1@R\e(B" . "\e$,46E\e(B")
+ ("\e$,1@R@m\e(B" . "\e$,47B\e(B")
+ ("\e$,1@R@m@R\e(B" . "\e$,47C\e(B") ;; lakar
+ ("\e$,1@R@m@J\e(B" . "\e$,47e\e(B") ;; ?
+
+ ("\e$,1@S\e(B" . "\e$,46F\e(B")
+ ("\e$,1@S@m\e(B" . "\e$,47D\e(B")
+ ("\e$,1@S@m@S\e(B" . "\e$,47E\e(B")
+
+ ("\e$,1@T\e(B" . "\e$,46G\e(B")
+ ("\e$,1@T@m\e(B" . "\e$,47D\e(B")
+
+ ("\e$,1@U\e(B" . "\e$,46H\e(B")
+ ("\e$,1@U@m@U\e(B" . "\e$,47F\e(B")
+
+ ("\e$,1@V\e(B" . "\e$,46I\e(B")
+ ("\e$,1@V@m@R\e(B" . "\e$,47G\e(B")
+ ("\e$,1@V@m@V\e(B" . "\e$,47H\e(B")
+ ("\e$,1@V@m@:\e(B" . "\e$,47]\e(B")
+
+ ("\e$,1@W\e(B" . "\e$,46J\e(B")
+ ("\e$,1@W@m@?\e(B" . "\e$,47c\e(B")
+
+ ("\e$,1@X\e(B" . "\e$,46K\e(B")
+ ("\e$,1@X@m@R\e(B" . "\e$,47I\e(B")
+ ("\e$,1@X@m@X\e(B" . "\e$,47J\e(B")
+ ("\e$,1@X@m@Q@m@Q\e(B" . "\e$,47L\e(B")
+ ("\e$,1@X@m@E\e(B" . "\e$,47X\e(B")
+
+ ("\e$,1@Y\e(B" . "\e$,46L\e(B")
+ ("\e$,1@Y@m@R\e(B" . "\e$,47K\e(B")
+ ("\e$,1@Y@m@N\e(B" . "\e$,47R\e(B")
+ ("\e$,1@Y@m@H\e(B" . "\e$,47S\e(B")
+
+ ;; Dependent vowel signs
+ ("\e$,1@^\e(B" . "\e$,46M\e(B")
+ ("\e$,1@_\e(B" . "\e$,46N\e(B")
+ ("\e$,1@`\e(B" . "\e$,46O\e(B")
+ ("\e$,1@a\e(B" . "\e$,46P\e(B")
+ ("\e$,1@b\e(B" . "\e$,46Q\e(B")
+ ("\e$,1@c\e(B" . "\e$,46R\e(B")
+ ("\e$,1@f\e(B" . "\e$,46S\e(B")
+ ("\e$,1@g\e(B" . "\e$,46T\e(B")
+ ("\e$,1@h\e(B" . "\e$,46S6S\e(B")
+ ("\e$,1@j\e(B" . "\e$,46S6M\e(B")
+ ("\e$,1@k\e(B" . "\e$,46T6M\e(B")
+ ("\e$,1@l\e(B" . "\e$,46U\e(B")
+ ;; Various signs
+ ("\e$,1@m\e(B" . "\e$,46V\e(B")
+ ("\e$,1@m@O\e(B" . "\e$,46Y\e(B") ;; yakar
+ ("\e$,1@m@O@a\e(B" . "\e$,46\\e(B") ;; yakar + u ;; ?
+ ("\e$,1@m@O@b\e(B" . "\e$,46]\e(B") ;; yakar + uu ;; ?
+ ("\e$,1@m@U\e(B" . "\e$,46Z\e(B") ;; vakar modifier
+ ("\e$,1@m@P\e(B" . "\e$,46[\e(B") ;; rakar modifier is the same to rra modifier.
+ ("\e$,1@m@Q\e(B" . "\e$,46[\e(B") ;; rrakar modifier
+ ("\e$,1@m@m\e(B" . "\e$,46V\e(B") ;; double omission sign to stop forming half consonant.
+ ("\e$,1@w\e(B" . "\e$,46U\e(B") ;; not in present use, already at 0D4C.
+ ))
+
+(defvar mlm-char-glyph-hash
+ (let* ((hash (make-hash-table :test 'equal)))
+ (mapc (function (lambda (x) (puthash (car x) (cdr x) hash)))
+ mlm-char-glyph)
+ hash))
+
+(defvar mlm-char-glyph-regexp
+ (malayalam-regexp-of-hashtbl-keys mlm-char-glyph-hash))
+
+;; Malayalam languages needed to be reordered in a complex mannar.
+
+(defvar mlm-consonants
+ (concat
+ "\e$,46)6*6+6,6-6.6/606162636465666768696:6;6<6=6>6?6@6A6B6C6D6E6F6G6H6I6J6K6L\e(B"
+ "\e$,47!7"7#7$7%7&7'7(7)7*7+7,7-7.7/707172737475767778797:7;7<7=7>7?7@7A7B7C7D7E7F7G7H7I7J7K7L7M7N7O7P7Q7R7S7T7U7V7W7X7Y7Z7[7\7]7^7_7`7a7b7c7d7e\e(B"
+ ))
+
+(defvar mlm-consonants-regexp
+ (concat "\\(\e$,46[\e(B?[" mlm-consonants "][\e$,46Y6Z\e(B]?\\)"))
+
+(defvar mlm-glyph-reorder-key-glyphs "[\e$,46[6S6T\e(B]")
+
+(defvar mlm-glyph-reordering-regexp-list
+ `((,(concat "\\([" mlm-consonants "][\e$,46Y6Z\e(B]?\\)\e$,46[\e(B") . "\e$,46[\e(B\\1")
+ (,(concat mlm-consonants-regexp "\e$,46S6S\e(B") . "\e$,46S6S\e(B\\1")
+ (,(concat mlm-consonants-regexp "\e$,46S\e(B") . "\e$,46S\e(B\\1")
+ (,(concat mlm-consonants-regexp "\e$,46T\e(B") . "\e$,46T\e(B\\1")))
+
+(defun malayalam-compose-syllable-string (string)
+ (with-temp-buffer
+ (insert (decompose-string string))
+ (malayalam-compose-syllable-region (point-min) (point-max))
+ (buffer-string)))
+
+(defun malayalam-compose-syllable-region (from to)
+ "Compose malayalam syllable in region FROM to TO."
+ (let (glyph-str
+ match-str
+ glyph-reorder-regexps
+ glyph-reorder-replace
+ glyph-reorder-regexp)
+ (save-excursion
+ (save-restriction
+ (narrow-to-region from to)
+ (goto-char (point-min))
+ ;; char-glyph-conversion
+ (while (re-search-forward mlm-char-glyph-regexp nil t)
+ (setq match-str (match-string 0))
+ (setq glyph-str
+ (concat glyph-str (gethash match-str mlm-char-glyph-hash))))
+ (when (string-match mlm-glyph-reorder-key-glyphs glyph-str)
+ ;; glyph reordering
+ (setq glyph-reorder-regexps mlm-glyph-reordering-regexp-list)
+ (while glyph-reorder-regexps
+ (setq glyph-reorder-regexp (caar glyph-reorder-regexps))
+ (setq glyph-reorder-replace (cdar glyph-reorder-regexps))
+ (setq glyph-reorder-regexps (cdr glyph-reorder-regexps))
+ (if (string-match glyph-reorder-regexp glyph-str)
+ (setq glyph-str
+ (replace-match glyph-reorder-replace nil nil
+ glyph-str)))))
+ ;; concatenate and attach reference-points.
+ (setq glyph-str
+ (cdr
+ (apply
+ 'nconc
+ (mapcar
+ (function
+ (lambda (x) (list '(5 . 3) x))) ;; default ref. point.
+ glyph-str))))
+ (compose-region from to glyph-str)))))
+
+(provide 'mlm-util)
+
+;;; devan-util.el ends here
--- /dev/null
+;;; tamil.el --- Support for Tamil -*- coding: iso-2022-7bit; no-byte-compile: t -*-
+
+;; Copyright (C) 2003 Free Software Foundation, Inc.
+
+;; Maintainer: KAWABATA, Taichi <batta@beige.ocn.ne.jp>
+;; Keywords: multilingual, Indian, Tamil
+
+;; 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.
+
+;;; Commentary:
+
+;; This file defines language-info of Tamil script.
+
+;;; Code:
+
+(set-language-info-alist
+ "Tamil" '((charset mule-unicode-0100-24ff indian-glyph )
+ (coding-system utf-8)
+ (coding-priority utf-8)
+ (input-method . "tamil-itrans")
+ (features tml-util)
+ (documentation . "\
+South Indian Language Tamikl supported in this language environment."))
+ '("Indian"))
+
+(provide 'tamil)
+
+;;; tamil.el ends here
--- /dev/null
+;;; tml-util.el --- support for composing tamil characters -*-coding: iso-2022-7bit;-*-
+
+;; Copyright (C) 2001 Free Software Foundation, Inc.
+
+;; Maintainer: KAWABATA, Taichi <kawabata@m17n.org>
+;; Keywords: multilingual, Indian, Tamil
+
+;; 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: Nov. 08. 2002
+
+;;; Commentary:
+
+;; This file provides character(Unicode) to glyph(CDAC) conversion and
+;; composition of Tamil script characters.
+
+;;; Code:
+
+;; Tamil Composable Pattern
+;; C .. Consonants
+;; V .. Vowel
+;; H .. Pulli
+;; M .. Matra
+;; V .. Vowel
+;; A .. Anuswar
+;; D .. Chandrabindu
+;; 1. vowel
+;; V
+;; 2. syllable : only ligature-formed pattern forms composition.
+;; (CkHCs|C)(H|M)?
+;; 3. sri special
+;; (CsHCrVi)
+
+;; oririnal
+;; ((CH)?(CH)?(CH)?CH)?C(H|M?(A|D)?)?
+
+(defconst tamil-consonant
+ "[\e$,1<5\e(B-\e$,1<Y\e(B]")
+
+(defconst tamil-composable-pattern
+ (concat
+ "\\([\e$,1<%\e(B-\e$,1<4\e(B]\\)\\|"
+ "[\e$,1<"<#\e(B]\\|" ;; vowel modifier considered independent
+ "\\(\\(?:\\(?:\e$,1<5<m<W\e(B\\)\\|[\e$,1<5\e(B-\e$,1<Y\e(B]\\)[\e$,1<m<^\e(B-\e$,1<l\e(B]?\\)\\|"
+ "\\(
\e$,1<W<m<P<`
\e(B\\)")
+ "Regexp matching a composable sequence of Tamil characters.")
+
+;;;###autoload
+(defun tamil-compose-region (from to)
+ (interactive "r")
+ (save-excursion
+ (save-restriction
+ (narrow-to-region from to)
+ (goto-char (point-min))
+ (while (re-search-forward tamil-composable-pattern nil t)
+ (tamil-compose-syllable-region (match-beginning 0)
+ (match-end 0))))))
+(defun tamil-compose-string (string)
+ (with-temp-buffer
+ (insert (decompose-string string))
+ (tamil-compose-region (point-min) (point-max))
+ (buffer-string)))
+
+(defun tamil-post-read-conversion (len)
+ (save-excursion
+ (save-restriction
+ (let ((buffer-modified-p (buffer-modified-p)))
+ (narrow-to-region (point) (+ (point) len))
+ (tamil-compose-region (point-min) (point-max))
+ (set-buffer-modified-p buffer-modified-p)
+ (- (point-max) (point-min))))))
+
+(defun tamil-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 tamil-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 tamil-composition-function (from to pattern &optional string)
+ "Compose Tamil characters in REGION, or STRING if specified.
+Assume that the REGION or STRING must fully match the composable
+PATTERN regexp."
+ (if string (tamil-compose-syllable-string string)
+ (tamil-compose-syllable-region from to))
+ (- to from))
+
+;; Register a function to compose Tamil characters.
+(mapc
+ (function (lambda (ucs)
+ (aset composition-function-table (decode-char 'ucs ucs)
+ (list (cons tamil-composable-pattern
+ 'tamil-composition-function)))))
+ (nconc '(#x0b82 #x0b83) (tamil-range #x0b85 #x0bb9)))
+
+;; Notes on conversion steps.
+
+;; 1. chars to glyphs
+;; Simple replacement of characters to glyphs is done.
+
+;; 2. glyphs reordering.
+;; following "\e$,4)j\e(B", "\e$,4)k\e(B", "\e$,4)l\e(B" goes to the front.
+
+;; 3. glyphs to glyphs
+;; reordered vowels are ligatured to consonants.
+
+;; 4. Composition.
+;; left modifiers will be attached at the left.
+;; others will be attached right.
+
+(defvar tml-char-glyph
+ '(;; various signs
+ ;;("\e$,1<"\e(B" . "")
+ ("\e$,1<#\e(B" . "\e$,4*G\e(B")
+ ;; Independent Vowels
+ ("\e$,1<%\e(B" . "\e$,4*<\e(B")
+ ("\e$,1<&\e(B" . "\e$,4*=\e(B")
+ ("\e$,1<'\e(B" . "\e$,4*>\e(B")
+ ("\e$,1<(\e(B" . "\e$,4*?\e(B")
+ ("\e$,1<)\e(B" . "\e$,4*@\e(B")
+ ("\e$,1<*\e(B" . "\e$,4*A\e(B")
+ ("\e$,1<.\e(B" . "\e$,4*B\e(B")
+ ("\e$,1</\e(B" . "\e$,4*C\e(B")
+ ("\e$,1<0\e(B" . "\e$,4*D\e(B")
+ ("\e$,1<2\e(B" . "\e$,4*E\e(B")
+ ("\e$,1<3\e(B" . "\e$,4*F\e(B")
+ ("\e$,1<4\e(B" . "\e$,4*E*W\e(B")
+ ;; Consonants
+ ("\e$,1<5<m<W<m\e(B" . "\e$,4):\e(B") ; ks.
+ ("\e$,1<5<m<W\e(B" . "\e$,4*^\e(B") ; ks
+ ("\e$,1<5\e(B" . "\e$,4*H\e(B")
+
+ ("\e$,1<9\e(B" . "\e$,4*I\e(B")
+ ("\e$,1<:\e(B" . "\e$,4*J\e(B")
+ ("\e$,1<<\e(B" . "\e$,4*\\e(B")
+ ("\e$,1<<<m\e(B" . "\e$,4)8\e(B")
+ ("\e$,1<>\e(B" . "\e$,4*K\e(B")
+ ("\e$,1<?\e(B" . "\e$,4*L\e(B")
+ ("\e$,1<C\e(B" . "\e$,4*M\e(B")
+ ("\e$,1<D\e(B" . "\e$,4*N\e(B")
+ ("\e$,1<H\e(B" . "\e$,4*O\e(B")
+ ("\e$,1<I\e(B" . "\e$,4*Y\e(B")
+ ("\e$,1<I<m\e(B" . "\e$,4)a\e(B")
+ ("\e$,1<J\e(B" . "\e$,4*P\e(B")
+ ("\e$,1<N\e(B" . "\e$,4*Q\e(B")
+ ("\e$,1<O\e(B" . "\e$,4*R\e(B")
+ ("
\e$,1<P
\e(B" . "
\e$,4*S
\e(B")
+ ("\e$,1<Q\e(B" . "\e$,4*X\e(B")
+ ("\e$,1<R\e(B" . "\e$,4*T\e(B")
+ ("\e$,1<S\e(B" . "\e$,4*W\e(B")
+ ("\e$,1<T\e(B" . "\e$,4*V\e(B")
+ ("\e$,1<U\e(B" . "\e$,4*U\e(B")
+ ("\e$,1<W\e(B" . "\e$,4*[\e(B")
+ ("\e$,1<W<m\e(B" . "\e$,4)7\e(B")
+ ("
\e$,1<W<m<P<`
\e(B" . "
\e$,4*_
\e(B")
+ ("\e$,1<X\e(B" . "\e$,4*Z\e(B")
+ ("\e$,1<X<m\e(B" . "\e$,4)6\e(B")
+ ("\e$,1<Y\e(B" . "\e$,4*]\e(B")
+ ("\e$,1<Y<m\e(B" . "\e$,4)9\e(B")
+
+ ;; Dependent vowel signs
+ ("\e$,1<^\e(B" . "\e$,4)c\e(B")
+ ("\e$,1<_\e(B" . "\e$,4)d\e(B")
+ ("\e$,1<`\e(B" . "\e$,4)f\e(B")
+ ("
\e$,1<a
\e(B" . "
\e$,4)g
\e(B")
+ ("\e$,1<b\e(B" . "\e$,4)h\e(B")
+ ("\e$,1<f\e(B" . "\e$,4)j\e(B")
+ ("\e$,1<g\e(B" . "\e$,4)k\e(B")
+ ("\e$,1<h\e(B" . "\e$,4)l\e(B")
+ ("\e$,1<j\e(B" . "\e$,4)j)c\e(B")
+ ("\e$,1<k\e(B" . "\e$,4)k)c\e(B")
+ ("\e$,1<l\e(B" . "\e$,4)j*W\e(B")
+
+ ;; Various signs
+ ("\e$,1<m\e(B" . "\e$,4)b\e(B")
+ ("\e$,1<w\e(B" . "nil") ;; not supported?
+ ))
+
+(defvar tml-char-glyph-hash
+ (let* ((hash (make-hash-table :test 'equal)))
+ (mapc (function (lambda (x) (puthash (car x) (cdr x) hash)))
+ tml-char-glyph)
+ hash))
+
+(defvar tml-char-glyph-regexp
+ (tamil-regexp-of-hashtbl-keys tml-char-glyph-hash))
+
+;; Tamil languages needed to be reordered.
+
+(defvar tml-consonants-regexp
+ "[\e$,4*H*^*I*J*\*K*L*M*N*O*Y*P*Q*R*S*X*T*W*V*U*[*Z*]\e(B]")
+
+(defvar tml-glyph-reorder-key-glyphs "[\e$,4)j)k)l\e(B]")
+
+(defvar tml-glyph-reordering-regexp-list
+ (cons
+ (concat "\\(" tml-consonants-regexp "\\)\\([\e$,4)j)k)l\e(B]\\)") "\\2\\1"))
+
+;; Tamil vowel modifiers to be ligatured.
+(defvar tml-glyph-glyph
+ '(
+ ("\e$,4*H)d\e(B" . "\e$,4(a\e(B") ; ki
+ ("\e$,4*^)d\e(B" . "\e$,4(v\e(B") ; ksi
+ ("\e$,4*^)f\e(B" . "\e$,4)2\e(B") ; ksi~
+ ("\e$,4*I)d\e(B" . "\e$,4(b\e(B") ; n^i
+ ("\e$,4*J)d\e(B" . "\e$,4(c\e(B") ; ci
+ ("\e$,4*K)d\e(B" . "\e$,4(d\e(B") ; n~i
+ ("\e$,4*L)d\e(B" . "\e$,4)n\e(B") ; t.i
+ ("\e$,4*M)d\e(B" . "\e$,4(e\e(B") ; n.i
+ ("\e$,4*N)d\e(B" . "\e$,4(f\e(B") ; ti
+ ("\e$,4*O)d\e(B" . "\e$,4(g\e(B") ; ni
+ ("\e$,4*P)d\e(B" . "\e$,4(h\e(B") ; pi
+ ("\e$,4*Q)d\e(B" . "\e$,4(i\e(B") ; mi
+ ("\e$,4*R)d\e(B" . "\e$,4(j\e(B") ; yi
+ ("\e$,4*S)d\e(B" . "\e$,4(k\e(B") ; ri
+ ("\e$,4*T)d\e(B" . "\e$,4(l\e(B") ; li
+ ("\e$,4*U)d\e(B" . "\e$,4(m\e(B") ; vi
+ ("\e$,4*V)d\e(B" . "\e$,4(n\e(B") ; l_i
+ ("\e$,4*W)d\e(B" . "\e$,4(o\e(B") ; l.i
+ ("\e$,4*X)d\e(B" . "\e$,4(p\e(B") ; r_i
+ ("\e$,4*Y)d\e(B" . "\e$,4(q\e(B") ; n_i
+ ("\e$,4*Z)d\e(B" . "\e$,4(r\e(B") ; si
+ ("\e$,4*[)d\e(B" . "\e$,4(s\e(B") ; s'i
+ ("\e$,4*\)d\e(B" . "\e$,4(t\e(B") ; ji
+ ("\e$,4*])d\e(B" . "\e$,4(u\e(B") ; hi
+
+ ("\e$,4*H)f\e(B" . "\e$,4(w\e(B") ; ki~
+ ("\e$,4*I)f\e(B" . "\e$,4(x\e(B") ; n^i~
+ ("\e$,4*J)f\e(B" . "\e$,4(y\e(B") ; ci~
+ ("\e$,4*K)f\e(B" . "\e$,4(z\e(B") ; n~i~
+ ("\e$,4*L)f\e(B" . "\e$,4)o\e(B") ; t.i~
+ ("\e$,4*M)f\e(B" . "\e$,4)!\e(B") ; n.i~
+ ("\e$,4*N)f\e(B" . "\e$,4)"\e(B") ; ti~
+ ("\e$,4*O)f\e(B" . "\e$,4)#\e(B") ; ni~
+ ("\e$,4*P)f\e(B" . "\e$,4)$\e(B") ; pi~
+ ("\e$,4*Q)f\e(B" . "\e$,4)%\e(B") ; mi~
+ ("\e$,4*R)f\e(B" . "\e$,4)&\e(B") ; yi~
+ ("\e$,4*S)f\e(B" . "\e$,4)'\e(B") ; ri~
+ ("\e$,4*T)f\e(B" . "\e$,4)(\e(B") ; li~
+ ("\e$,4*U)f\e(B" . "\e$,4))\e(B") ; vi~
+ ("\e$,4*V)f\e(B" . "\e$,4)*\e(B") ; l_i~
+ ("\e$,4*W)f\e(B" . "\e$,4)+\e(B") ; l.i~
+ ("\e$,4*X)f\e(B" . "\e$,4),\e(B") ; r_i~
+ ("\e$,4*Y)f\e(B" . "\e$,4)-\e(B") ; n_i~
+ ("\e$,4*Z)f\e(B" . "\e$,4).\e(B") ; si~
+ ("\e$,4*[)f\e(B" . "\e$,4)/\e(B") ; s'i~
+ ("\e$,4*\)f\e(B" . "\e$,4)0\e(B") ; ji~
+ ("\e$,4*])f\e(B" . "\e$,4)1\e(B") ; hi~
+
+ ("\e$,4*H)g\e(B" . "\e$,4)p\e(B") ; ku
+ ("\e$,4*I)g\e(B" . "\e$,4)q\e(B") ; n^u
+ ("\e$,4*J)g\e(B" . "\e$,4)r\e(B") ; cu
+ ("\e$,4*K)g\e(B" . "\e$,4)s\e(B") ; n~u
+ ("\e$,4*L)g\e(B" . "\e$,4)t\e(B") ; t.u
+ ("\e$,4*M)g\e(B" . "\e$,4)u\e(B") ; n.u
+ ("\e$,4*N)g\e(B" . "\e$,4)v\e(B") ; tu
+ ("\e$,4*O)g\e(B" . "\e$,4)x\e(B") ; nu
+ ("\e$,4*P)g\e(B" . "\e$,4)y\e(B") ; pu
+ ("\e$,4*Q)g\e(B" . "\e$,4)z\e(B") ; mu
+ ("\e$,4*R)g\e(B" . "\e$,4){\e(B") ; yu
+ ("\e$,4*S)g\e(B" . "\e$,4)|\e(B") ; ru
+ ("\e$,4*T)g\e(B" . "\e$,4)}\e(B") ; lu
+ ("\e$,4*U)g\e(B" . "\e$,4)~\e(B") ; vu
+ ("\e$,4*V)g\e(B" . "\e$,4)\7f\e(B") ; l_u
+ ("\e$,4*W)g\e(B" . "\e$,4* \e(B") ; l.u
+ ("\e$,4*X)g\e(B" . "\e$,4*!\e(B") ; r_u
+ ("\e$,4*Y)g\e(B" . "\e$,4*"\e(B") ; n_u
+
+ ("\e$,4*H)h\e(B" . "\e$,4*#\e(B") ; ku~
+ ("\e$,4*I)h\e(B" . "\e$,4*$\e(B") ; n^u~
+ ("\e$,4*J)h\e(B" . "\e$,4*%\e(B") ; cu~
+ ("\e$,4*K)h\e(B" . "\e$,4*&\e(B") ; n~u~
+ ("\e$,4*L)h\e(B" . "\e$,4*'\e(B") ; t.u~
+ ("\e$,4*M)h\e(B" . "\e$,4*(\e(B") ; n.u~
+ ("\e$,4*N)h\e(B" . "\e$,4*)\e(B") ; tu~
+ ("\e$,4*O)h\e(B" . "\e$,4*+\e(B") ; nu~
+ ("\e$,4*P)h\e(B" . "\e$,4*,\e(B") ; pu~
+ ("\e$,4*Q)h\e(B" . "\e$,4*-\e(B") ; mu~
+ ("\e$,4*R)h\e(B" . "\e$,4*.\e(B") ; yu~
+ ("\e$,4*S)h\e(B" . "\e$,4*/\e(B") ; ru~
+ ("\e$,4*T)h\e(B" . "\e$,4*6\e(B") ; lu~
+ ("\e$,4*U)h\e(B" . "\e$,4*7\e(B") ; vu~
+ ("\e$,4*V)h\e(B" . "\e$,4*8\e(B") ; l_u~
+ ("\e$,4*W)h\e(B" . "\e$,4*9\e(B") ; l.u~
+ ("\e$,4*X)h\e(B" . "\e$,4*:\e(B") ; r_u~
+ ("\e$,4*Y)h\e(B" . "\e$,4*;\e(B") ; n_u~
+ ))
+
+(defvar tml-glyph-glyph-hash
+ (let* ((hash (make-hash-table :test 'equal)))
+ (mapc (function (lambda (x) (puthash (car x) (cdr x) hash)))
+ tml-glyph-glyph)
+ hash))
+
+(defvar tml-glyph-glyph-regexp
+ (tamil-regexp-of-hashtbl-keys tml-glyph-glyph-hash))
+
+(defun tamil-compose-syllable-string (string)
+ (with-temp-buffer
+ (insert (decompose-string string))
+ (tamil-compose-syllable-region (point-min) (point-max))
+ (buffer-string)))
+
+(defun tamil-compose-syllable-region (from to)
+ "Compose tamil syllable in region FROM to TO."
+ (let (glyph-str match-str glyph-reorder-regexps)
+ (save-excursion
+ (save-restriction
+ (narrow-to-region from to)
+ (goto-char (point-min))
+ ;; char-glyph-conversion
+ (while (re-search-forward tml-char-glyph-regexp nil t)
+ (setq match-str (match-string 0))
+ (setq glyph-str
+ (concat glyph-str (gethash match-str tml-char-glyph-hash))))
+ ;; glyph reordering
+ (when (string-match tml-glyph-reorder-key-glyphs glyph-str)
+ (if (string-match (car tml-glyph-reordering-regexp-list)
+ glyph-str)
+ (setq glyph-str
+ (replace-match (cdr tml-glyph-reordering-regexp-list)
+ nil nil glyph-str))))
+ ;; glyph-glyph-conversion
+ (when (string-match tml-glyph-glyph-regexp glyph-str)
+ (setq match-str (match-string 0 glyph-str))
+ (setq glyph-str
+ (replace-match (gethash match-str tml-glyph-glyph-hash)
+ nil nil glyph-str)))
+ ;; concatenate and attach reference-points.
+ (setq glyph-str
+ (cdr
+ (apply
+ 'nconc
+ (mapcar
+ (function
+ (lambda (x) (list '(5 . 3) x))) ;; default ref. point.
+ glyph-str))))
+ (compose-region from to glyph-str)))))
+
+(provide 'tml-util)
+
+;;; tml-util.el ends here