[Emacs-diffs] Changes to emacs/lisp/language/indian.el [emacs-unicode-2]

[Kenichi Handa]

Index: emacs/lisp/language/indian.el
diff -c /dev/null emacs/lisp/language/indian.el:1.24.4.1
*** /dev/null   Mon Sep  8 08:55:35 2003
--- emacs/lisp/language/indian.el       Mon Sep  8 08:53:41 2003
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*** 0 ****
--- 1,160 ----
+ ;;; indian.el --- Indian languages support -*- coding: iso-2022-7bit; -*-
+ 
+ ;; Copyright (C) 1999, 2001 Free Software Foundation, Inc.
+ 
+ ;; Maintainer:  KAWABATA, Taichi <address@hidden>
+ ;; Keywords:  multilingual, i18n, 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:
+ 
+ ;; This file defines in-is13194 coding system and relationship between
+ ;; indian-glyph character-set and various CDAC fonts.
+ 
+ ;;; Code:
+ 
+ (define-coding-system 'in-is13194-devanagari
+   "8-bit encoding for ASCII (MSB=0) and IS13194-Devanagari (MSB=1)."
+   :coding-type 'iso-2022
+   :mnemonic ?D
+   :designation [ascii indian-is13194 nil nil]
+   :charset-list '(ascii indian-is13194)
+   :post-read-conversion 'in-is13194-post-read-conversion
+   :pre-write-conversion 'in-is13194-pre-write-conversion)
+ 
+ (define-coding-system-alias 'devanagari 'in-is13194-devanagari)
+ 
+ (defvar indian-font-foundry 'cdac
+   "Font foundry for Indian characters.
+ Currently supported foundries are `cdac' and `akruti'.")
+ 
+ (defvar indian-script-language-alist
+   "Alist of Indian scripts vs the corresponding language list and font 
foundry.
+ Each element has this form:
+ 
+   (SCRIPT LANGUAGE-LIST FONT-FOUNDRY)
+ 
+ SCRIPT is one of Indian script names.
+ 
+ LANGUAGE-LIST is a list of Indian langauge names SCRIPT is used for.
+ The list is in the priority order.
+ 
+ FONT-FOUNDRY is a font foundry representing a group of Indian
+ fonts.  If the value is nil, the value of `indian-font-foundry'
+ is used."
+   '((devanagari (hindi sanskrit) nil)
+     (bengali (bengali assamese) nil)
+     (gurmukhi (punjabi) nil)
+     (gujarati (gujarati) nil)
+     (oriya (oriya) nil)
+     (tamil (tamil) nil)
+     (telugu (telugu) nil)
+     (kannada (kannada) nil)
+     (malayalam (malayalam) nil)))
+ 
+ (defconst indian-font-char-index-table
+   '(                                  ; for which language(s)
+     ;; CDAC fonts
+     (#x0000 . cdac:dv-ttsurekh)               ; hindi, etc
+     (#x0100 . cdac:sd-ttsurekh)               ; sanskrit
+     (#x0200 . cdac:bn-ttdurga)                ; bengali
+     (#x0300 . cdac:tm-ttvalluvar)     ; tamil
+     (#x0400 . cdac:tl-tthemalatha)    ; telugu
+     (#x0500 . cdac:as-ttdurga)                ; assamese
+     (#x0600 . cdac:or-ttsarala)               ; oriya
+     (#x0700 . cdac:kn-ttuma)          ; kannada
+     (#x0800 . cdac:ml-ttkarthika)     ; malayalam
+     (#x0900 . cdac:gj-ttavantika)     ; gujarati
+     (#x0A00 . cdac:pn-ttamar)         ; punjabi
+ 
+     ;; AKRUTI fonts
+     (#x0B00 . akruti:dev)             ; hindi, etc
+     (#x0C00 . akruti:bng)             ; bengali
+     (#x0D00 . akruti:pnj)             ; punjabi
+     (#x0E00 . akruti:guj)             ; gujarati
+     (#x0F00 . akruti:ori)             ; oriya
+     (#x1000 . akruti:tml)             ; tamil
+     (#x1100 . akruti:tlg)             ; telugu
+     (#x1200 . akruti:knd)             ; kannada
+     (#x1300 . akruti:mal)             ; malayalam
+     )
+   "Aliat of indices of `indian-glyph' character vs Indian font identifiers.
+ Each element has this form: (INDEX . FONT-IDENTIFIER)
+ 
+ INDEX is an index number of the first character in the charset
+ `indian-glyph' assigned for glyphs in the font specified by
+ FONT-IDENTIFIER.  Currently FONT-IDENTIFIERs are defined for CDAC
+ and AKRUTI font groups.")
+   
+ (defun indian-font-char (index font-identifier)
+   "Return character of charset `indian-glyph' made from glyph index INDEX.
+ FONT-IDENTIFIER is an identifier of an Indian font listed in the
+ variable `indian-font-char-index-table'.  It specifies which
+ font INDEX is for."
+   (if (or (< index 0) (> index 255))
+       (error "Invalid glyph index: %d" index))
+   (let ((start (car (rassq font-identifier indian-font-char-index-table))))
+     (if (not start)
+       (error "Unknown font identifier: %s" font-identifier))
+     (setq index (+ start index))
+     (make-char 'indian-glyph (+ (/ index 96) 32) (+ (% index 96) 32))))
+ 
+ ;; Return a range of characters (cons of min and max character) of the
+ ;; charset `indian-glyph' for displaying SCRIPT in LANGUAGE by a font
+ ;; of FOUNDRY.
+ 
+ (defun indian-font-char-range (font-identifier)
+   (cons (indian-font-char 0 font-identifier)
+       (indian-font-char 255 font-identifier)))
+        
+ (defvar indian-script-table
+   '[
+     devanagari
+     sanskrit
+     bengali
+     tamil
+     telugu
+     assamese
+     oriya
+     kannada
+     malayalam
+     gujarati
+     punjabi
+     ]
+   "Vector of Indian script names.")
+ 
+ (let ((len (length indian-script-table))
+       (i 0))
+   (while (< i len)
+     (put (aref indian-script-table i) 'indian-glyph-code-offset (* 256 i))
+     (setq i (1+ i))))
+ 
+ (defvar indian-default-script 'devanagari
+   "Default script for Indian languages.
+ Each Indian language environment sets this value
+ to one of `indian-script-table' (which see).
+ The default value is `devanagari'.")
+ 
+ (defvar indian-composable-pattern
+   (make-char-table nil)
+   "Char table of regexps for composable Indian character sequence.")
+ 
+ (provide 'indian)
+ 
+ ;;; indian.el ends here