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emacs/leim/quail/indian.el
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2003-09-01 15:45:59 +00:00

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;;; indian.el --- Quail packages for inputting Indian
;; Copyright (C) 2000, 2001 Free Software Foundation, Inc.
;; Author: KAWABATA, Taichi <kawabata@m17n.org>
;; Keywords: multilingual, input method, Indian, 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.
;;; Commentary:
;; History:
;; 2000.12.12
;; Totally re-written from devanagari.el to handle multiple Indian Scripts.
;;; Code:
(require 'quail)
(require 'devan-util)
(require 'ind-util)
(defun quail-indian-preceding-char-position (position)
"Return the position of preceding composite character."
(let (prec-composed)
(if (char-valid-p (char-before position)) ;; range o.k.
(if (setq prec-composed (find-composition (1- position)))
(car prec-composed)
(1- position))
nil)))
(defvar quail-indian-update-preceding-char nil)
(make-variable-frame-local 'quail-indian-update-preceding-char)
;; Input value ::
;; CONTROL-FLAG is integer `n'
;; quail-current-key :: keyboard input.
;; Only first `n' can be translated.
;; quail-current-str :: corresonding string.
;; jobs :: (1) put last (len-n) char to unrread-command-event.
;; (2) put translated string to quail-current-str.
;;
;; CONTROL-FLAG is t (terminate) or nil (proceed the translation)
;; quail-current-key :: keyboard input.
;; quail-current-str :: corresponding string.
;; jobs :: (1) put modified translated string to quail-current-str.
;;
;; When non-nil value is returned from quail-translation-update-function,
;; the quail-current-str is split to characters and put into event queue,
;; with `compose-last-char' event with composition info at the end.
(defun quail-indian-update-translation (control-flag)
;; make quail-current-str string when possible.
(if (char-valid-p quail-current-str)
(setq quail-current-str (char-to-string quail-current-str)))
;(message "\n input control-flag=%s, str=%s, key=%s q-ind-upd-prec-char=%s"
; control-flag quail-current-str quail-current-key
; quail-indian-update-preceding-char)
;; reset quail-indian-update-preceding-char if it's initial.
(if (= (overlay-start quail-overlay) (overlay-end quail-overlay))
(setq quail-indian-update-preceding-char nil))
;; Check the preceding character of the quail region. If the
;; preceding character can be composed with quail-current-str, then
;; grab that preceding character into the quail-current-str and
;; remove that char from the region.
(let* (prec-char-position composition-regexp
prec-char-str candidate-str match-pos match-end)
(when (and quail-current-str
(null quail-indian-update-preceding-char)
(null input-method-use-echo-area)
(null input-method-exit-on-first-char)
(setq prec-char-position
(quail-indian-preceding-char-position
(overlay-start quail-overlay)))
(setq composition-regexp
(if prec-char-position
(caar (elt composition-function-table
(char-after prec-char-position)))))
(setq prec-char-str
(buffer-substring prec-char-position
(overlay-start quail-overlay))
candidate-str (concat prec-char-str quail-current-str)
match-pos (string-match composition-regexp candidate-str)
match-end (match-end 0))
(> match-end (length prec-char-str)))
(setq quail-indian-update-preceding-char prec-char-str)
(delete-region prec-char-position
(overlay-start quail-overlay))))
(setq quail-current-str
(indian-compose-string
(concat quail-indian-update-preceding-char
quail-current-str)))
(if (numberp control-flag)
(setq unread-command-events
(string-to-list
(substring quail-current-key control-flag))))
(when control-flag
(setq quail-indian-update-preceding-char nil))
;(message "output control-flag=%s, str=%s, key=%s q-ind-upd-prec-char=%s"
; control-flag quail-current-str quail-current-key
; quail-indian-update-preceding-char)
control-flag)
;;;
;;; Input by transliteration
;;;
(defun quail-define-indian-trans-package (hashtbls pkgname
lang title doc)
(funcall 'quail-define-package pkgname lang title t doc
nil nil nil nil nil nil t nil
'quail-indian-update-translation)
(maphash
(lambda (key val)
(quail-defrule key (if (= (length val) 1)
(string-to-char val)
(vector val))))
(cdr hashtbls)))
;; This needs to be seen by quail-update-leim-list-file, but cannot be
;; commented out because quail-update-leim-list-file ignores
;; commented-out lines.
(if nil
(quail-define-package "devanagari-itrans" "Devanagari" "DevIT" t "Devanagari ITRANS"))
(quail-define-indian-trans-package
indian-dev-itrans-v5-hash "devanagari-itrans" "Devanagari" "DevIT"
"Devanagari transliteration by ITRANS method.")
(if nil
(quail-define-package "devanagari-kyoto-harvard" "Devanagari" "DevKH" t "Devanagari Kyoto-Harvard"))
(quail-define-indian-trans-package
indian-dev-kyoto-harvard-hash
"devanagari-kyoto-harvard" "Devanagari" "DevKH"
"Devanagari transliteration by Kyoto-Harvard method.")
(if nil
(quail-define-package "devanagari-aiba" "Devanagari" "DevAB" t "Devanagari Aiba"))
(quail-define-indian-trans-package
indian-dev-aiba-hash "devanagari-aiba" "Devanagari" "DevAB"
"Devanagari transliteration by Aiba-method.")
(if nil
(quail-define-package "punjabi-itrans" "Punjabi" "PnjIT" t "Punjabi ITRANS"))
(quail-define-indian-trans-package
indian-pnj-itrans-v5-hash "punjabi-itrans" "Punjabi" "PnjIT"
"Punjabi transliteration by ITRANS method.")
(if nil
(quail-define-package "gujarati-itrans" "Gujarati" "GjrIT" t "Gujarati ITRANS"))
(quail-define-indian-trans-package
indian-gjr-itrans-v5-hash "gujarati-itrans" "Gujarati" "GjrIT"
"Gujarati transliteration by ITRANS method.")
(if nil
(quail-define-package "oriya-itrans" "Oriya" "OriIT" t "Oriya ITRANS"))
(quail-define-indian-trans-package
indian-ori-itrans-v5-hash "oriya-itrans" "Oriya" "OriIT"
"Oriya transliteration by ITRANS method.")
(if nil
(quail-define-package "bengali-itrans" "Bengali" "BngIT" t "Bengali ITRANS"))
(quail-define-indian-trans-package
indian-bng-itrans-v5-hash "bengali-itrans" "Bengali" "BngIT"
"Bengali transliteration by ITRANS method.")
(if nil
(quail-define-package "assamese-itrans" "Assamese" "AsmIT" t "Assamese ITRANS"))
(quail-define-indian-trans-package
indian-asm-itrans-v5-hash "assamese-itrans" "Assamese" "AsmIT"
"Assamese transliteration by ITRANS method.")
(if nil
(quail-define-package "telugu-itrans" "Telugu" "TlgIT" t "Telugu ITRANS"))
(quail-define-indian-trans-package
indian-tlg-itrans-v5-hash "telugu-itrans" "Telugu" "TlgIT"
"Telugu transliteration by ITRANS method.")
(if nil
(quail-define-package "kannada-itrans" "Kannada" "KndIT" t "Kannada ITRANS"))
(quail-define-indian-trans-package
indian-knd-itrans-v5-hash "kannada-itrans" "Kannada" "KndIT"
"Kannada transliteration by ITRANS method.")
(if nil
(quail-define-package "malayalam-itrans" "Malayalam" "MlmIT" t "Malayalam ITRANS"))
(quail-define-indian-trans-package
indian-mlm-itrans-v5-hash "malayalam-itrans" "Malayalam" "MlmIT"
"Malayalam transliteration by ITRANS method.")
(if nil
(quail-define-package "tamil-itrans" "Tamil" "TmlIT" t "Tamil ITRANS"))
(quail-define-indian-trans-package
indian-tml-itrans-v5-hash "tamil-itrans" "Tamil" "TmlIT"
"Tamil transliteration by ITRANS method.")
;;;
;;; Input by Inscript
;;;
(defun quail-indian-flatten-list (lst)
"Flatten the nested LIST so that there would be no innner list."
(if (listp lst)
(apply 'append (mapcar 'quail-indian-flatten-list lst))
(list lst)))
(defun quail-define-inscript-package (char-table key-table pkgname lang title
docstring)
(setq char-table (quail-indian-flatten-list char-table))
(setq key-table (quail-indian-flatten-list key-table))
(funcall 'quail-define-package pkgname lang title nil docstring
nil nil nil nil nil nil nil nil
'quail-indian-update-translation)
(dolist (key key-table)
(let ((val (pop char-table)))
(if (and key val)
(quail-defrule
(if (char-valid-p key) (char-to-string key) key)
(if (stringp val) (vector val) val))))))
;;
(defvar inscript-dev-keytable
'(
(;; VOWELS (18)
(?D nil) (?E ?e) (?F ?f) (?R ?r) (?G ?g) (?T ?t)
(?+ ?=) ("F]" "f]") (?! ?@) (?Z ?z) (?S ?s) (?W ?w)
(?| ?\\) (?~ ?`) (?A ?a) (?Q ?q) ("+]" "=]") ("R]" "r]"))
(;; CONSONANTS (42)
?k ?K ?i ?I ?U ;; GRUTTALS
?\; ?: ?p ?P ?} ;; PALATALS
?' ?\" ?\[ ?{ ?C ;; CEREBRALS
?l ?L ?o ?O ?v ?V ;; DENTALS
?h ?H ?y ?Y ?c ;; LABIALS
?/ ?j ?J ?n ?N "N]" ?b ;; SEMIVOWELS
?M ?< ?m ?u ;; SIBILANTS
"k]" "K]" "i]" "p]" "[]" "{]" "H]" "/]" ;; NUKTAS
?% ?&)
(;; Misc Symbols (7)
?X ?x ?_ ">]" ?d "X]" ?>)
(;; Digits
?0 ?1 ?2 ?3 ?4 ?5 ?6 ?7 ?8 ?9)
(;; Inscripts
?# ?$ ?^ ?* ?\])))
(if nil
(quail-define-package "devanagari-inscript" "Devanagari" "DevIS" t "Devanagari keyboard Inscript"))
(quail-define-inscript-package
indian-dev-base-table inscript-dev-keytable
"devanagari-inscript" "Devanagari" "DevIS"
"Devanagari keyboard Inscript.")
(if nil
(quail-define-package "punjabi-inscript" "Punjabi" "PnjIS" t "Punjabi keyboard Inscript"))
(quail-define-inscript-package
indian-pnj-base-table inscript-dev-keytable
"punjabi-inscript" "Punjabi" "PnjIS"
"Punjabi keyboard Inscript.")
(if nil
(quail-define-package "gujarati-inscript" "Gujarati" "GjrIS" t "Gujarati keyboard Inscript"))
(quail-define-inscript-package
indian-gjr-base-table inscript-dev-keytable
"gujarati-inscript" "Gujarati" "GjrIS"
"Gujarati keyboard Inscript.")
(if nil
(quail-define-package "oriya-inscript" "Oriya" "OriIS" t "Oriya keyboard Inscript"))
(quail-define-inscript-package
indian-ori-base-table inscript-dev-keytable
"oriya-inscript" "Oriya" "OriIS"
"Oriya keyboard Inscript.")
(if nil
(quail-define-package "bengali-inscript" "Bengali" "BngIS" t "Bengali keyboard Inscript"))
(quail-define-inscript-package
indian-bng-base-table inscript-dev-keytable
"bengali-inscript" "Bengali" "BngIS"
"Bengali keyboard Inscript.")
(if nil
(quail-define-package "assamese-inscript" "Assamese" "AsmIS" t "Assamese keyboard Inscript"))
(quail-define-inscript-package
indian-asm-base-table inscript-dev-keytable
"assamese-inscript" "Assamese" "AsmIS"
"Assamese keyboard Inscript.")
(if nil
(quail-define-package "telugu-inscript" "Telugu" "TlgIS" t "Telugu keyboard Inscript"))
(quail-define-inscript-package
indian-dev-base-table inscript-dev-keytable
"telugu-inscript" "Telugu" "TlgIS"
"Telugu keyboard Inscript.")
(if nil
(quail-define-package "kannada-inscript" "Kannada" "KndIS" t "Kannada keyboard Inscript"))
(quail-define-inscript-package
indian-knd-base-table inscript-dev-keytable
"kannada-inscript" "Kannada" "KndIS"
"Kannada keyboard Inscript.")
(if nil
(quail-define-package "malayalam-inscript" "Malayalam" "MlmIS" t "Malayalam keyboard Inscript"))
(quail-define-inscript-package
indian-mlm-base-table inscript-dev-keytable
"malayalam-inscript" "Malayalam" "MlmIS"
"Malayalam keyboard Inscript.")
(if nil
(quail-define-package "tamil-inscript" "Tamil" "TmlIS" t "Tamil keyboard Inscript"))
(quail-define-inscript-package
indian-tml-base-table inscript-dev-keytable
"tamil-inscript" "Tamil" "TmlIS"
"Tamil keyboard Inscript.")
;;; arch-tag: 9e5a621e-f7d5-4fce-9543-0a51b407c940
;;; indian.el ends here
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