lisp/language/cyrillic.el

   1 ;;; cyrillic.el --- support for Cyrillic -*- coding: utf-8; -*-
   2
   3 ;; Copyright (C) 1997-1998, 2001-2016 Free Software Foundation, Inc.
   4 ;; Copyright (C) 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004,
   5 ;;   2005, 2006, 2007, 2008, 2009, 2010, 2011
   6 ;;   National Institute of Advanced Industrial Science and Technology (AIST)
   7 ;;   Registration Number H14PRO021
   8 ;; Copyright (C) 2003
   9 ;;   National Institute of Advanced Industrial Science and Technology (AIST)
  10 ;;   Registration Number H13PRO009
  11
  12 ;; Author: Kenichi Handa <handa@etl.go.jp>
  13 ;; Keywords: multilingual, Cyrillic, i18n
  14
  15 ;; This file is part of GNU Emacs.
  16
  17 ;; GNU Emacs is free software: you can redistribute it and/or modify
  18 ;; it under the terms of the GNU General Public License as published by
  19 ;; the Free Software Foundation, either version 3 of the License, or
  20 ;; (at your option) any later version.
  21
  22 ;; GNU Emacs is distributed in the hope that it will be useful,
  23 ;; but WITHOUT ANY WARRANTY; without even the implied warranty of
  24 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  25 ;; GNU General Public License for more details.
  26
  27 ;; You should have received a copy of the GNU General Public License
  28 ;; along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.
  29
  30 ;;; Commentary:
  31
  32 ;; The character set ISO8859-5 is supported.  KOI-8 and ALTERNATIVNYJ
  33 ;; are converted to Unicode internally.  See
  34 ;; <URL:http://www.ecma.ch/ecma1/STAND/ECMA-113.HTM>.  For more info
  35 ;; on Cyrillic charsets, see
  36 ;; <URL:http://czyborra.com/charsets/cyrillic.html>.  The KOI and
  37 ;; Alternativnyj coding systems should live in code-pages.el, but
  38 ;; they've always been preloaded and the coding system autoload
  39 ;; mechanism didn't get accepted, so they have to stay here and
  40 ;; duplicate code-pages stuff.
  41
  42 ;; Note that 8859-5 maps directly onto the Unicode Cyrillic block,
  43 ;; apart from codepoints 160 (NBSP, c.f. U+0400), 173 (soft hyphen,
  44 ;; c.f. U+04OD) and 253 (section sign, c.f U+045D).  The KOI-8 and
  45 ;; Alternativnyj coding systems encode both 8859-5 and Unicode.
  46 ;; ucs-tables.el provides unification for cyrillic-iso-8bit.
  47
  48 ;; Customizing `utf-fragment-on-decoding' allows decoding characters
  49 ;; from KOI and Alternativnyj into 8859-5 where that's possible.
  50 ;; cyrillic-iso8859-5 characters take half as much space in the buffer
  51 ;; as the mule-unicode-0100-24ff equivalents, though that's probably
  52 ;; not normally a big deal.
  53
  54 ;;; Code:
  55
  56 ;; Cyrillic (general)
  57
  58 ;; ISO-8859-5 stuff
  59
  60 (define-coding-system 'cyrillic-iso-8bit
  61   "ISO 2022 based 8-bit encoding for Cyrillic script (MIME:ISO-8859-5)."
  62   :coding-type 'charset
  63   :mnemonic ?5
  64   :charset-list '(iso-8859-5)
  65   :mime-charset 'iso-8859-5)
  66
  67 (define-coding-system-alias 'iso-8859-5 'cyrillic-iso-8bit)
  68
  69 (set-language-info-alist
  70  "Cyrillic-ISO" '((charset iso-8859-5)
  71                   (coding-system cyrillic-iso-8bit)
  72                   (coding-priority cyrillic-iso-8bit)
  73                   (input-method . "cyrillic-yawerty") ; fixme
  74                   (nonascii-translation . iso-8859-5)
  75                   (unibyte-display . cyrillic-iso-8bit)
  76                   (features cyril-util)
  77                   (sample-text . "Russian (Русский)      Здравствуйте!")
  78                   (documentation . "Support for Cyrillic ISO-8859-5."))
  79  '("Cyrillic"))
  80
  81 ;; KOI-8R stuff
  82
  83 (define-coding-system 'cyrillic-koi8
  84   "KOI8 8-bit encoding for Cyrillic (MIME: KOI8-R)."
  85   :coding-type 'charset
  86   ;; We used to use ?K.  It is true that ?K is more strictly correct,
  87   ;; but it is also used for Korean.  So people who use koi8 for
  88   ;; languages other than Russian will have to forgive us.
  89   :mnemonic ?R
  90   :charset-list '(koi8)
  91   :mime-charset 'koi8-r)
  92
  93 (define-coding-system-alias 'koi8-r 'cyrillic-koi8)
  94 (define-coding-system-alias 'koi8 'cyrillic-koi8)
  95 (define-coding-system-alias 'cp878 'cyrillic-koi8)
  96
  97 (set-language-info-alist
  98  "Cyrillic-KOI8" `((charset koi8)
  99                    (coding-system cyrillic-koi8)
 100                    (coding-priority cyrillic-koi8 cyrillic-iso-8bit)
 101                    (ctext-non-standard-encodings "koi8-r")
 102                    (nonascii-translation . koi8)
 103                    (input-method . "russian-typewriter")
 104                    (features cyril-util)
 105                    (unibyte-display . cyrillic-koi8)
 106                    (sample-text . "Russian (Русский)     Здравствуйте!")
 107                    (documentation . "Support for Cyrillic KOI8-R."))
 108  '("Cyrillic"))
 109
 110 (set-language-info-alist
 111  "Russian" `((charset cyrillic-iso8859-5)
 112              (nonascii-translation
 113               . ,(get 'cyrillic-koi8-r-nonascii-translation-table
 114                       'translation-table))
 115              (coding-system cyrillic-koi8)
 116              (coding-priority cyrillic-koi8 cyrillic-iso-8bit)
 117              (input-method . "russian-computer")
 118              (features cyril-util)
 119              (unibyte-display . cyrillic-koi8)
 120              (sample-text . "Russian (Русский)   Здравствуйте!")
 121              (documentation . "\
 122 Support for Russian using koi8-r and the russian-computer input method.")
 123              (tutorial . "TUTORIAL.ru"))
 124  '("Cyrillic"))
 125
 126 (define-coding-system 'koi8-u
 127   "KOI8-U 8-bit encoding for Cyrillic (MIME: KOI8-U)"
 128   :coding-type 'charset
 129   :mnemonic ?U
 130   :charset-list '(koi8-u)
 131   :mime-charset 'koi8-u)
 132
 133 (set-language-info-alist
 134  "Ukrainian" `((charset koi8-u)
 135                (coding-system koi8-u)
 136                (coding-priority koi8-u)
 137                (nonascii-translation . koi8-u)
 138                (input-method . "ukrainian-computer")
 139                (documentation
 140                 . "Support for Ukrainian with KOI8-U character set."))
 141  '("Cyrillic"))
 142
 143 ;;; ALTERNATIVNYJ stuff
 144
 145 (define-coding-system 'cyrillic-alternativnyj
 146   "ALTERNATIVNYJ 8-bit encoding for Cyrillic."
 147   :coding-type 'charset
 148   :mnemonic ?A
 149   :charset-list '(alternativnyj))
 150
 151 (define-coding-system-alias 'alternativnyj 'cyrillic-alternativnyj)
 152
 153 (set-language-info-alist
 154  "Cyrillic-ALT" `((charset alternativnyj)
 155                   (coding-system cyrillic-alternativnyj)
 156                   (coding-priority cyrillic-alternativnyj)
 157                   (nonascii-translation . alternativnyj)
 158                   (input-method . "russian-typewriter")
 159                   (features cyril-util)
 160                   (unibyte-display . cyrillic-alternativnyj)
 161                   (sample-text . "Russian (Русский)      Здравствуйте!")
 162                   (documentation . "Support for Cyrillic ALTERNATIVNYJ."))
 163  '("Cyrillic"))
 164
 165 (define-coding-system 'cp866
 166   "CP866 encoding for Cyrillic."
 167   :coding-type 'charset
 168   :mnemonic ?*
 169   :charset-list '(ibm866)
 170   :mime-charset 'cp866)
 171
 172 (define-coding-system 'koi8-u
 173   "KOI8-U 8-bit encoding for Cyrillic (MIME: KOI8-U)"
 174   :coding-type 'charset
 175   :mnemonic ?U
 176   :charset-list '(koi8-u)
 177   :mime-charset 'koi8-u)
 178
 179 (define-coding-system 'koi8-t
 180   "KOI8-T 8-bit encoding for Cyrillic"
 181   :coding-type 'charset
 182   :mnemonic ?*
 183   :charset-list '(koi8-t)
 184   :mime-charset 'koi8-t)
 185
 186 (define-coding-system 'windows-1251
 187   "windows-1251 8-bit encoding for Cyrillic (MIME: WINDOWS-1251)"
 188   :coding-type 'charset
 189   :mnemonic ?b
 190   :charset-list '(windows-1251)
 191   :mime-charset 'windows-1251)
 192 (define-coding-system-alias 'cp1251 'windows-1251)
 193
 194 (define-coding-system 'cp1125
 195   "cp1125 8-bit encoding for Cyrillic"
 196   :coding-type 'charset
 197   :mnemonic ?*
 198   :charset-list '(cp1125))
 199 (define-coding-system-alias 'ruscii 'cp1125)
 200 ;; Original name for cp1125, says Serhii Hlodin <hlodin@lutsk.bank.gov.ua>
 201 (define-coding-system-alias 'cp866u 'cp1125)
 202
 203 (define-coding-system 'cp855
 204   "DOS codepage 855 (Russian)"
 205   :coding-type 'charset
 206   :mnemonic ?D
 207   :charset-list '(cp855)
 208   :mime-charset 'cp855)
 209 (define-coding-system-alias 'ibm855 'cp855)
 210
 211 (define-coding-system 'mik
 212   "Bulgarian DOS codepage"
 213   :coding-type 'charset
 214   :mnemonic ?D
 215   :charset-list '(mik))
 216
 217 (define-coding-system 'pt154
 218   "ParaType Asian Cyrillic codepage"
 219   :coding-type 'charset
 220   :mnemonic ?D
 221   :charset-list '(pt154))
 222
 223 ;; (set-language-info-alist
 224 ;;  "Windows-1251" `((coding-system windows-1251)
 225 ;;                (coding-priority windows-1251)
 226 ;;                (input-method . "russian-typewriter") ; fixme?
 227 ;;                (features code-pages)
 228 ;;                (documentation . "Support for windows-1251 character set."))
 229 ;;  '("Cyrillic"))
 230
 231 (set-language-info-alist
 232  "Tajik" `((coding-system koi8-t)
 233            (coding-priority koi8-t)
 234            (nonascii-translation . cyrillic-koi8-t)
 235            (charset koi8-t)
 236            (input-method . "russian-typewriter") ; fixme?
 237            (features code-pages)
 238            (documentation . "Support for Tajik using KOI8-T."))
 239  '("Cyrillic"))
 240
 241 (set-language-info-alist
 242  "Bulgarian" `((coding-system windows-1251)
 243                (coding-priority windows-1251)
 244                (nonascii-translation . windows-1251)
 245                (charset windows-1251)
 246                (ctext-non-standard-encodings "microsoft-cp1251")
 247                (input-method . "bulgarian-bds")
 248                (documentation
 249                 . "Support for Bulgarian with windows-1251 character set."))
 250  '("Cyrillic"))
 251
 252 (set-language-info-alist
 253  "Belarusian" `((coding-system windows-1251)
 254                 (coding-priority windows-1251)
 255                 (nonascii-translation . windows-1251)
 256                 (charset windows-1251)
 257                 (ctext-non-standard-encodings "microsoft-cp1251")
 258                 (input-method . "belarusian")
 259                 (documentation
 260                  . "Support for Belarusian with windows-1251 character set.
 261 \(The name Belarusian replaced Byelorussian in the early 1990s.)"))
 262  '("Cyrillic"))
 263
 264 (set-language-info-alist
 265  "Ukrainian" `((coding-system koi8-u)
 266                (coding-priority koi8-u)
 267                (input-method . "ukrainian-computer")
 268                (documentation
 269                 . "Support for Ukrainian with koi8-u character set."))
 270  '("Cyrillic"))
 271
 272 (provide 'cyrillic)
 273
 274 ;;; cyrillic.el ends here