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author | Kenichi Handa <handa@m17n.org> | 2008-02-21 07:38:40 +0000 |
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committer | Kenichi Handa <handa@m17n.org> | 2008-02-21 07:38:40 +0000 |
commit | b3c54c013de83e58b1ba0ace8d92d437c69a47bc (patch) | |
tree | c1a5aec21fcc2efe7ffb6123e96f1af08b3094b0 /lisp/language | |
parent | 23e046978621711d97cef8fa93cee4ef524eaff9 (diff) | |
download | emacs-b3c54c013de83e58b1ba0ace8d92d437c69a47bc.tar.gz |
*** empty log message ***
Diffstat (limited to 'lisp/language')
-rw-r--r-- | lisp/language/devan-util.el | 664 |
1 files changed, 0 insertions, 664 deletions
diff --git a/lisp/language/devan-util.el b/lisp/language/devan-util.el deleted file mode 100644 index 85cf1f9a673..00000000000 --- a/lisp/language/devan-util.el +++ /dev/null @@ -1,664 +0,0 @@ -;;; devan-util.el --- Support for composing Devanagari characters -*-coding: iso-2022-7bit;-*- - -;; Copyright (C) 1997, 1998, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 -;; Free Software Foundation, Inc. -;; Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, -;; 2007, 2008 -;; National Institute of Advanced Industrial Science and Technology (AIST) -;; Registration Number H14PRO021 - -;; Maintainer: KAWABATA, Taichi <kawabata@m17n.org> -;; 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 3, 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., 51 Franklin Street, Fifth Floor, -;; Boston, MA 02110-1301, 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 - "\\([$,15E(B-$,15T6@6A(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]?[$,15B5A(B]?\\)?" - "\\)") - "Regexp matching a composable sequence of Devanagari characters.") - -(dolist (range '((#x0903 . #x0903) - (#x0905 . #x0939) - (#x0958 . #x0961))) - (set-char-table-range indian-composable-pattern range - devanagari-composable-pattern)) - -;;;###autoload -(defun devanagari-compose-region (from to) - (interactive "r") - (save-excursion - (save-restriction - (narrow-to-region from to) - (goto-char (point-min)) - (while (re-search-forward devanagari-composable-pattern nil t) - (devanagari-compose-syllable-region (match-beginning 0) - (match-end 0)))))) -(defun devanagari-compose-string (string) - (with-temp-buffer - (insert (decompose-string string)) - (devanagari-compose-region (point-min) (point-max)) - (buffer-string))) - -;;;###autoload -(defun devanagari-post-read-conversion (len) - (save-excursion - (save-restriction - (let ((buffer-modified-p (buffer-modified-p))) - (narrow-to-region (point) (+ (point) len)) - (devanagari-compose-region (point-min) (point-max)) - (set-buffer-modified-p buffer-modified-p) - (- (point-max) (point-min)))))) - -(defun devanagari-regexp-of-hashtbl-keys (hashtbl) - "Return a regular expression that matches all keys in hashtable HASHTBL." - (let ((max-specpdl-size 1000)) - (regexp-opt - (sort - (let (dummy) - (maphash (function (lambda (key val) (setq dummy (cons key dummy)))) hashtbl) - dummy) - (function (lambda (x y) (> (length x) (length y)))))))) - -;;;###autoload -(defun devanagari-composition-function (pos &optional string) - "Compose Devanagari characters after the position POS. -If STRING is not nil, it is a string, and POS is an index to the string. -In this case, compose characters after POS of the string." - (if string - (if auto-compose-current-font - (if (eq (string-match "[$,15@(B-$,16_(B]+" pos) pos) - (or (font-shape-text 0 (match-end 0) auto-compose-current-font - string) - pos))) - (goto-char pos) - (if auto-compose-current-font - (if (looking-at "[$,15@(B-$,16_(B]+") - (or (font-shape-text pos (match-end 0) auto-compose-current-font) - pos) - (if (looking-at devanagari-composable-pattern) - (prog1 (match-end 0) - (devanagari-compose-syllable-region pos (match-end 0)))))))) - -;; Notes on conversion steps. - -;; 1. chars to glyphs -;; -;; Rules will not be applied to the halant appeared at the end of the -;; text. Also, the preceding/following "r" will be treated as special case. - -;; 2. glyphs reordering. -;; -;; The glyphs are split by halant, and each glyph groups are -;; re-ordered in the following order. -;; -;; Note that `consonant-glyph' mentioned here does not contain the -;; vertical bar (right modifier) attached at the right of the -;; consonant. -;; -;; If the glyph-group contains right modifier, -;; (1) consonant-glyphs/vowels, with nukta sign -;; (2) spacing -;; (3) right modifier (may be matra) -;; (4) top matra -;; (5) preceding "r" -;; (6) anuswar -;; (7) following "r" -;; (8) bottom matra or halant. -;; -;; Otherwise, -;; (1) consonant-glyph/vowels, with nukta sign -;; (3) left matra -;; (4) top matra -;; (5) preceding "r" -;; (6) anuswar -;; (7) following "r" -;; (8) bottom matra or halant. -;; (2) spacing - -;; 3. glyph to glyph -;; -;; For better display, some glyph display would be tuned. - -;; 4. Composition. -;; -;; left modifiers will be attached at the left. -;; others will be attached right. - -;; Problem:: -;; Can we generalize this methods to other Indian scripts? - -(defvar dev-char-glyph - '(("$,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") - ("$,16@(B" . "$,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 (re-search-forward dev-char-glyph-regexp nil t) - (setq match-str (match-string 0)) - (setq 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)))) - ;; 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) - -;;; arch-tag: 9bc4d6e3-f2b9-4110-886e-ff9b66b7eebc -;;; devan-util.el ends here |