leim/quail/lrt.el

   1 ;;; lrt.el --- Quail package for inputting Lao characters by LRT method  -*-coding: iso-2022-7bit;-*-
   2
   3 ;; Copyright (C) 1998, 2001-2011  Free Software Foundation, Inc.
   4 ;; Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005,
   5 ;;   2006, 2007, 2008, 2009, 2010, 2011
   6 ;;   National Institute of Advanced Industrial Science and Technology (AIST)
   7 ;;   Registration Number H14PRO021
   8
   9 ;; Keywords: multilingual, input method, Lao, LRT.
  10
  11 ;; This file is part of GNU Emacs.
  12
  13 ;; GNU Emacs is free software: you can redistribute it and/or modify
  14 ;; it under the terms of the GNU General Public License as published by
  15 ;; the Free Software Foundation, either version 3 of the License, or
  16 ;; (at your option) any later version.
  17
  18 ;; GNU Emacs is distributed in the hope that it will be useful,
  19 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  20 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21 ;; GNU General Public License for more details.
  22
  23 ;; You should have received a copy of the GNU General Public License
  24 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  25
  26 ;;; Commentary:
  27
  28 ;;; Code:
  29
  30 (require 'quail)
  31 (require 'lao-util)
  32
  33 ;; LRT (Lao Roman Transcription) input method accepts the following
  34 ;; key sequence:
  35 ;;      consonant [+ semi-vowel-sign-lo ] + vowel [+ maa-sakod ] [+ tone-mark ]
  36
  37 (defun quail-lao-update-translation (control-flag)
  38   (if (integerp control-flag)
  39       ;; Non-composable character typed.
  40       (setq quail-current-str
  41             (buffer-substring (overlay-start quail-overlay)
  42                               (overlay-end quail-overlay))
  43             unread-command-events
  44             (string-to-list
  45              (substring quail-current-key control-flag)))
  46     (let ((lao-str (lao-transcribe-roman-to-lao-string quail-current-key)))
  47       (if (> (aref lao-str 0) 255)
  48           (setq quail-current-str lao-str)
  49         (or quail-current-str
  50             (setq quail-current-str quail-current-key)))))
  51   control-flag)
  52
  53
  54 (quail-define-package
  55  "lao-lrt" "Lao" "\e(1E\e(BR" t
  56  "Lao input method using LRT (Lao Roman Transcription).
  57 `\\' (backslash) + number-key   => \e(1p\e(B,\e(1q\e(B,\e(1r\e(B,...  LAO DIGIT ZERO, ONE, TWO, ...
  58 `\\' (backslash) + `\\'         => \e(1f\e(B              LAO KO LA (REPETITION)
  59 `\\' (backslash) + `$'          => \e(1O\e(B              LAO ELLIPSIS
  60 "
  61  nil 'forget-last-selection 'deterministic 'kbd-translate 'show-layout
  62   nil nil nil 'quail-lao-update-translation nil t)
  63
  64 ;; LRT (Lao Roman Transcription) input method accepts the following
  65 ;; key sequence:
  66 ;;      consonant [ semi-vowel-sign-lo ] vowel [ maa-sakod ] [ tone-mark ]
  67
  68 (quail-install-map
  69  (quail-map-from-table
  70   '((base-state (lao-transcription-consonant-alist . sv-state)
  71                 lao-transcription-vowel-alist
  72                 lao-transcription-tone-alist)
  73     (sv-state (lao-transcription-semi-vowel-alist . v-state)
  74               (lao-transcription-vowel-alist . mt-state))
  75     (v-state (lao-transcription-vowel-alist . mt-state))
  76     (mt-state (lao-transcription-maa-sakod-alist . t-state)
  77               lao-transcription-tone-alist)
  78     (t-state lao-transcription-tone-alist))))
  79
  80 ;;; lrt.el ends here