mirror of
https://git.savannah.gnu.org/git/emacs.git
synced 2024-12-22 10:26:20 +00:00
313 lines
9.1 KiB
EmacsLisp
313 lines
9.1 KiB
EmacsLisp
;;; indian.el --- Support for Indian Languages -*- coding: iso-2022-7bit; -*-
|
||
|
||
;; Copyright (C) 1995 Free Software Foundation, Inc.
|
||
|
||
;; Author: KAWABATA, Taichi <kawabata@is.s.u-tokyo.ac.jp>
|
||
|
||
;; Keywords: multilingual, Indian
|
||
|
||
;; 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:
|
||
|
||
;; History:
|
||
;; 1996.10.18 written by KAWABATA, Taichi <kawabata@is.s.u-tokyo.ac.jp>
|
||
|
||
;; For Indian, the character set IS 13194 is supported.
|
||
;;
|
||
;; IS 13194 does not specifically assign glyphs for each characters.
|
||
;; Following code is not specific to each Indian language.
|
||
;;
|
||
;; Eventually, this code will support generic information about
|
||
;; following scripts.
|
||
;;
|
||
;; Devanagari
|
||
;; Bengali
|
||
;; Gurmukhi
|
||
;; Gujarati
|
||
;; Oriya
|
||
;; Tamil
|
||
;; Telgu
|
||
;; Kannada
|
||
;; Malayalam
|
||
;;
|
||
;; In this file, charsets other than charset-ascii and charset-indian-is13194
|
||
;; should not be used except in the comment.
|
||
|
||
;;; Code:
|
||
|
||
;; Followings are what you see when you refer to the Emacs
|
||
;; representations of IS 13194 charcters. However, this is merely
|
||
;; tentative apperance, and you must convert them by
|
||
;; indian-to-xxxxxx(specific script) function to use them.
|
||
;; Devanagari is not an exception of this rule.
|
||
|
||
;; 0xa0 //(5!"#$%&'()*+,-./(B
|
||
;; 0xb0 (50123456789:;<=>?(B
|
||
;; 0xc0 (5@ABCDEFGHIJKLMNO(B
|
||
;; 0xd0 (5PQRSTUVWXYZ[\]^_(B
|
||
;; 0xe0 (5`abcdefghijklmno(B
|
||
;; 0xf0 (5pqrstuvwxyz{|}~(B//
|
||
|
||
;; Note - In IS 13194, several symbols are obtained by special
|
||
;; combination of several characters and Nukta sign.
|
||
;;
|
||
;; Sanskrit Vowel R -> (5*(B + (5i(B
|
||
;; Sanskrit Vowel L -> (5&(B + (5i(B
|
||
;; Sanskrit Vowel LL -> (5'(B + (5i(B
|
||
;; Sanskrit Avagrah -> (5j(B + (5i(B
|
||
;; OM -> (5!(B + (5i(B
|
||
;;
|
||
;; Note - IS 13194 defines ATR(0xEF) and EXT(0xF0), but they are
|
||
;; not used in Emacs.
|
||
;;
|
||
;; Note - the above characters DO NOT represent any script. For
|
||
;; example, if you want to obtain Devanagari character, you must do
|
||
;; something like the following.
|
||
;;
|
||
;; (char-to-string (indian-to-devanagari ?(5$(B))
|
||
;; "$(5!$(B"
|
||
|
||
;;; ITRANS
|
||
;;
|
||
;; ITRANS is one of the most popular method to exchange indian scripts
|
||
;; electronically. Here is the table to convert between ITRANS code and
|
||
;; IS 13194 code.
|
||
|
||
(defvar indian-itrans-consonant-alist
|
||
'(
|
||
("k" . "(53(B")
|
||
("kh" . "(54(B")
|
||
("g" . "(55(B")
|
||
("gh" . "(56(B")
|
||
("N^" . "(57(B")
|
||
("ch" . "(58(B")
|
||
("chh" . "(59(B")
|
||
("j" . "(5:(B")
|
||
("jh" . "(5;(B")
|
||
("JN" . "(5<(B")
|
||
("T" . "(5=(B")
|
||
("Th" . "(5>(B")
|
||
("D" . "(5?(B")
|
||
("Dh" . "(5@(B")
|
||
("N" . "(5A(B")
|
||
("t" . "(5B(B")
|
||
("th" . "(5C(B")
|
||
("d" . "(5D(B")
|
||
("dh" . "(5E(B")
|
||
("n" . "(5F(B")
|
||
("nh" . "(5G(B") ; For transcription of non-Devanagari Languages.
|
||
("p" . "(5H(B")
|
||
("ph" . "(5I(B")
|
||
("b" . "(5J(B")
|
||
("bh" . "(5K(B")
|
||
("m" . "(5L(B")
|
||
("y" . "(5M(B")
|
||
("yh" . "(5N(B") ; For transcription of non-Devanagari Languages.
|
||
("r" . "(5O(B")
|
||
("rh" . "(5P(B") ; For transcription of non-Devanagari Languages.
|
||
("l" . "(5Q(B")
|
||
("v" . "(5T(B")
|
||
("sh" . "(5U(B")
|
||
("shh" . "(5V(B")
|
||
("s" . "(5W(B")
|
||
("h" . "(5X(B")
|
||
("ld" . "(5R(B")
|
||
("L" . "(5R(B")
|
||
("ksh" . "$(5!3!h!V(B")
|
||
("GY" . "***GY***") ; Must check out later.
|
||
;; special consonants
|
||
("q" . "(53i(B")
|
||
("K" . "(54i(B")
|
||
("G" . "(55i(B")
|
||
("z" . "(5:i(B")
|
||
("f" . "(5Ii(B")
|
||
(".D" . "(5?i(B")
|
||
(".Dh" . "(5@i(B")
|
||
))
|
||
|
||
(defvar indian-itrans-vowel-sign-alist
|
||
'(
|
||
;; Special treatment unique to IS 13194 Transliteration
|
||
("" . "(5h(B")
|
||
("a" . "")
|
||
;; Matra (Vowel Sign)
|
||
("aa" . "(5Z(B")
|
||
("A" . "(5Z(B")
|
||
("i" . "(5[(B")
|
||
("ii" . "(5\(B")
|
||
("I" . "(5\(B")
|
||
("u" . "(5](B")
|
||
("uu" . "(5^(B")
|
||
("U" . "(5^(B")
|
||
("R^i" . "(5_(B") ; These must be checked out later.
|
||
("R^I" . "(5_i(B")
|
||
("L^i" . "(5[i(B")
|
||
("L^I" . "(5\i(B")
|
||
("E" . "(5`(B") ; For transcription of non-Devanangri Languages.
|
||
("e" . "(5a(B")
|
||
("ai" . "(5b(B")
|
||
;; ("e.c" . "(5c(B") ; Tentatively suppressed.
|
||
("O" . "(5d(B") ; For transcription of non-Devanagari Languages.
|
||
("o" . "(5e(B")
|
||
("au" . "(5f(B")
|
||
;; ("o.c" . "(5g(B") ; Tentatively suppressed.
|
||
))
|
||
|
||
;;
|
||
;; Independent vowels and other signs.
|
||
;;
|
||
|
||
(defvar indian-itrans-other-letters-alist
|
||
'(
|
||
("a" . "(5$(B")
|
||
("aa" . "(5%(B")
|
||
("A" . "(5%(B")
|
||
("i" . "(5&(B")
|
||
("ii" . "(5'(B")
|
||
("I" . "(5'(B")
|
||
("u" . "(5((B")
|
||
("uu" . "(5)(B")
|
||
("U" . "(5)(B")
|
||
("R^i" . "(5*(B")
|
||
("R^I" . "(5*i(B")
|
||
("L^i" . "(5&i(B")
|
||
("L^I" . "(5'i(B")
|
||
("E" . "(5+(B") ; For transcription of non-Devanagari Languages.
|
||
("e" . "(5,(B")
|
||
("ai" . "(5-(B")
|
||
;; ("e.c" . "(5.(B") ; Candra E
|
||
("O" . "(5/(B") ; For transcription of non-Devanagari Languages.
|
||
("o" . "(50(B")
|
||
("au" . "(51(B")
|
||
;; ("o.c" . "(52(B") ; Candra O
|
||
("M" . "(5$(B")
|
||
("H" . "(5#(B")
|
||
("AUM" . "(5!i(B")
|
||
("OM" . "(5!i(B")
|
||
(".r" . "(5Oh(B")
|
||
(".n" . "(5"(B")
|
||
(".N" . "(5!(B")
|
||
(".h" . "(5h(B") ; Halant
|
||
(".." . "(5j(B")
|
||
(".a" . "(5ji(B") ; Avagrah
|
||
("0" . "(5q(B")
|
||
("1" . "(5r(B")
|
||
("2" . "(5s(B")
|
||
("3" . "(5t(B")
|
||
("4" . "(5u(B")
|
||
("5" . "(5v(B")
|
||
("6" . "(5w(B")
|
||
("7" . "(5x(B")
|
||
("8" . "(5y(B")
|
||
("9" . "(5z(B")
|
||
))
|
||
|
||
;; Regular expression matching single Indian character represented
|
||
;; by ITRANS.
|
||
|
||
(defvar indian-itrans-regexp
|
||
(let ((consonant "\\([cs]hh?\\)\\|[kgjTDnpbyr]h?\\|\\(N\\^?\\)\\|\\(jN\\)\\|[mvqKGzfs]\\|\\(ld?\\)\\|\\(ksh\\)\\|\\(GY\\)\\|\\(\\.Dh?\\)")
|
||
(vowel "\\(a[aiu]\\)\\|\\(ii\\)\\|\\(uu\\)\\|\\([RL]\\^[iI]\\)\\|[AIEOeoaiu]")
|
||
(misc "[MH0-9]\\|\\(AUM\\)\\|\\(OM\\)\\|\\(\\.[rnNh\\.a]\\)")
|
||
(lpre "\\(") (rpre "\\)") (orre "\\|"))
|
||
(concat lpre misc rpre orre
|
||
lpre lpre consonant rpre "?" lpre vowel rpre rpre orre
|
||
lpre consonant rpre )))
|
||
|
||
;;
|
||
;; Regular expression matching single ITRANS unit for IS 13194 characters.
|
||
;;
|
||
|
||
(defvar itrans-indian-regexp
|
||
(let ((vowel "[(5$(B-(52(B]")
|
||
(consonant "[(53(B-(5X(B]")
|
||
(matra "[(5Z(B-(5g(B]")
|
||
(misc "[(5q(B-(5z(B]")
|
||
(lpre "\\(") (rpre "\\)") (orre "\\|"))
|
||
(concat misc orre
|
||
lpre consonant matra "?" rpre orre
|
||
vowel)))
|
||
|
||
;;
|
||
;; IS13194 - ITRANS conversion table for string matching above regexp.
|
||
;;
|
||
|
||
(defvar indian-itrans-alist
|
||
(let ((cl indian-itrans-consonant-alist)
|
||
(ml indian-itrans-other-letters-alist) rules)
|
||
(while cl
|
||
(let ((vl indian-itrans-vowel-sign-alist))
|
||
(while vl
|
||
(setq rules
|
||
(cons (cons (concat (car (car cl)) (car (car vl)))
|
||
(concat (cdr (car cl)) (cdr (car vl))))
|
||
rules))
|
||
(setq vl (cdr vl))))
|
||
(setq cl (cdr cl)))
|
||
(while ml
|
||
(setq rules (cons (cons (car (car ml))
|
||
(cdr (car ml)))
|
||
rules))
|
||
(setq ml (cdr ml)))
|
||
rules))
|
||
|
||
;;
|
||
;; Utility program to convert from ITRANS to IS 13194 in specified region.
|
||
;;
|
||
|
||
(defun indian-decode-itrans-region (from to)
|
||
"Convert `ITRANS' mnemonics of the current region to Indian characters.
|
||
When called from a program, expects two arguments,
|
||
positions (integers or markers) specifying the stretch of the region."
|
||
(interactive "r")
|
||
(save-restriction
|
||
(narrow-to-region from to)
|
||
(goto-char (point-min))
|
||
(while (re-search-forward indian-itrans-regexp nil t)
|
||
(let* ((itrans (buffer-substring (match-beginning 0) (match-end 0)))
|
||
(ch (cdr (assoc itrans indian-itrans-alist))))
|
||
(if ch
|
||
(progn
|
||
(delete-region (match-beginning 0) (match-end 0))
|
||
(insert ch)))))
|
||
(goto-char (point-min))
|
||
(while (re-search-forward "\\((5h(B\\)[^\\c0]" nil t)
|
||
(delete-region (match-beginning 1) (match-end 1)))))
|
||
|
||
;;
|
||
;; Utility program to convert from IS 13194 to ITRANS in specified region.
|
||
;;
|
||
|
||
(defun indian-encode-itrans-region (from to)
|
||
"Convert indian region to ITRANS mnemonics."
|
||
(interactive "r")
|
||
(save-restriction
|
||
(narrow-to-region from to)
|
||
(goto-char (point-min))
|
||
(while (re-search-forward itrans-indian-regexp nil t)
|
||
(let* ((indian (buffer-substring (match-beginning 0) (match-end 0)))
|
||
(ch (car (rassoc indian indian-itrans-alist))))
|
||
(if ch
|
||
(progn
|
||
(delete-region (match-beginning 0) (match-end 0))
|
||
(insert ch)))))
|
||
(goto-char (point-min))))
|
||
|
||
;;; indian.el ends here
|