leim/quail/lrt.el

   1 ;;; lrt.el --- Quail package for inputting Lao characters by LRT method  -*-coding: iso-2022-7bit;-*-
   2
   3 ;; Copyright (C) 1997 Electrotechnical Laboratory, JAPAN.
   4 ;; Licensed to the Free Software Foundation.
   5
   6 ;; Keywords: multilingual, input method, Lao, LRT.
   7
   8 ;; This file is part of GNU Emacs.
   9
  10 ;; GNU Emacs is free software; you can redistribute it and/or modify
  11 ;; it under the terms of the GNU General Public License as published by
  12 ;; the Free Software Foundation; either version 2, or (at your option)
  13 ;; any later version.
  14
  15 ;; GNU Emacs is distributed in the hope that it will be useful,
  16 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 ;; GNU General Public License for more details.
  19
  20 ;; You should have received a copy of the GNU General Public License
  21 ;; along with GNU Emacs; see the file COPYING.  If not, write to the
  22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  23 ;; Boston, MA 02111-1307, USA.
  24
  25 ;;; Commentary:
  26
  27 ;;; Code:
  28
  29 (require 'quail)
  30 (require 'lao-util)
  31
  32 ;; LRT (Lao Roman Transcription) input method accepts the following
  33 ;; key sequence:
  34 ;;      consonant [+ semi-vowel-sign-lo ] + vowel [+ maa-sakod ] [+ tone-mark ]
  35
  36 (defun quail-lao-update-translation (control-flag)
  37   (if (integerp control-flag)
  38       ;; Non-composable character typed.
  39       (setq quail-current-str
  40             (buffer-substring (overlay-start quail-overlay)
  41                               (overlay-end quail-overlay))
  42             unread-command-events
  43             (string-to-list
  44              (substring quail-current-key control-flag)))
  45     (let ((lao-str (lao-transcribe-roman-to-lao-string quail-current-key)))
  46       (if (> (aref lao-str 0) 255)
  47           (setq quail-current-str lao-str)
  48         (or quail-current-str
  49             (setq quail-current-str quail-current-key)))))
  50   control-flag)
  51
  52
  53 (quail-define-package
  54  "lao-lrt" "Lao" "\e(1E\e(BR" t
  55  "Lao input method using LRT (Lao Roman Transcription).
  56 `\\' (backslash) + number-key   => \e(1p\e(B,\e(1q\e(B,\e(1r\e(B,...  LAO DIGIT ZERO, ONE, TWO, ...
  57 `\\' (backslash) + `\\'         => \e(1f\e(B              LAO KO LA (REPETITION)
  58 `\\' (backslash) + `$'          => \e(1O\e(B              LAO ELLIPSIS
  59 "
  60  nil 'forget-last-selection 'deterministic 'kbd-translate 'show-layout
  61   nil nil nil 'quail-lao-update-translation nil t)
  62
  63 ;; LRT (Lao Roman Transcription) input method accepts the following
  64 ;; key sequence:
  65 ;;      consonant [ semi-vowel-sign-lo ] vowel [ maa-sakod ] [ tone-mark ]
  66
  67 (quail-install-map
  68  (quail-map-from-table
  69   '((base-state (lao-transcription-consonant-alist . sv-state)
  70                 lao-transcription-vowel-alist
  71                 lao-transcription-tone-alist)
  72     (sv-state (lao-transcription-semi-vowel-alist . v-state)
  73               (lao-transcription-vowel-alist . mt-state))
  74     (v-state (lao-transcription-vowel-alist . mt-state))
  75     (mt-state (lao-transcription-maa-sakod-alist . t-state)
  76               lao-transcription-tone-alist)
  77     (t-state lao-transcription-tone-alist))))
  78
  79 ;;; lrt.el ends here