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1 ;;; mule-coding.el --- Coding-system functions for Mule. -*- coding: iso-2022-7bit; -*-
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2
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3 ;; Copyright (C) 1995 Electrotechnical Laboratory, JAPAN.
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4 ;; Licensed to the Free Software Foundation.
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5 ;; Copyright (C) 1995 Amdahl Corporation.
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6 ;; Copyright (C) 1995 Sun Microsystems.
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7 ;; Copyright (C) 1997 MORIOKA Tomohiko
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8
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9 ;; This file is part of XEmacs.
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10
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11 ;; XEmacs is free software; you can redistribute it and/or modify it
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12 ;; under the terms of the GNU General Public License as published by
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13 ;; the Free Software Foundation; either version 2, or (at your option)
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14 ;; any later version.
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15
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16 ;; XEmacs is distributed in the hope that it will be useful, but
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17 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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18 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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19 ;; General Public License for more details.
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20
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21 ;; You should have received a copy of the GNU General Public License
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444
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22 ;; along with XEmacs; see the file COPYING. If not, write to the
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333
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23 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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24 ;; Boston, MA 02111-1307, USA.
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25
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26 ;;; Commentary:
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27
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28 ;;; split off of mule.el and mostly moved to coding.el
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29
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30 ;;; Code:
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31
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32 (defun coding-system-force-on-output (coding-system register)
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33 "Return the 'force-on-output property of CODING-SYSTEM for the specified REGISTER."
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444
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34 (check-type register integer)
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333
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35 (coding-system-property
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36 coding-system
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37 (case register
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38 (0 'force-g0-on-output)
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39 (1 'force-g1-on-output)
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40 (2 'force-g2-on-output)
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41 (3 'force-g3-on-output)
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42 (t (signal 'args-out-of-range (list register 0 3))))))
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43
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44 (defun coding-system-short (coding-system)
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45 "Return the 'short property of CODING-SYSTEM."
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46 (coding-system-property coding-system 'short))
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47
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48 (defun coding-system-no-ascii-eol (coding-system)
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49 "Return the 'no-ascii-eol property of CODING-SYSTEM."
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50 (coding-system-property coding-system 'no-ascii-eol))
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51
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52 (defun coding-system-no-ascii-cntl (coding-system)
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53 "Return the 'no-ascii-cntl property of CODING-SYSTEM."
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54 (coding-system-property coding-system 'no-ascii-cntl))
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55
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56 (defun coding-system-seven (coding-system)
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57 "Return the 'seven property of CODING-SYSTEM."
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58 (coding-system-property coding-system 'seven))
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59
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60 (defun coding-system-lock-shift (coding-system)
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61 "Return the 'lock-shift property of CODING-SYSTEM."
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62 (coding-system-property coding-system 'lock-shift))
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63
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64 (defun coding-system-charset (coding-system register)
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65 "Return the charset initially designated to REGISTER in CODING-SYSTEM.
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66 The allowable range of REGISTER is 0 through 3."
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67 (if (or (< register 0) (> register 3))
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68 (error 'args-out-of-range "coding-system-charset REGISTER" register 0 3))
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69 (coding-system-property coding-system (nth register '(charset-g0
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70 charset-g1
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71 charset-g2
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72 charset-g3))))
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73
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333
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74 ;;(defun coding-system-use-japanese-jisx0201-roman (coding-system)
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75 ;; "Return the 'use-japanese-jisx0201-roman property of CODING-SYSTEM."
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76 ;; (coding-system-property coding-system 'use-japanese-jisx0201-roman))
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77
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78 ;;(defun coding-system-use-japanese-jisx0208-1978 (coding-system)
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79 ;; "Return the 'use-japanese-jisx0208-1978 property of CODING-SYSTEM."
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80 ;; (coding-system-property coding-system 'use-japanese-jisx0208-2978))
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81
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82 (defun coding-system-no-iso6429 (coding-system)
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83 "Return the 'no-iso6429 property of CODING-SYSTEM."
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84 (coding-system-property coding-system 'no-iso6429))
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85
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86 (defun coding-system-ccl-encode (coding-system)
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87 "Return the CCL 'encode property of CODING-SYSTEM."
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88 (coding-system-property coding-system 'encode))
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89
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90 (defun coding-system-ccl-decode (coding-system)
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91 "Return the CCL 'decode property of CODING-SYSTEM."
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92 (coding-system-property coding-system 'decode))
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93
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94
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95 ;;;; Definitions of predefined coding systems
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96
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97 (make-coding-system
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98 'ctext 'iso2022
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99 "Coding-system used in X as Compound Text Encoding."
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100 '(charset-g0 ascii
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101 charset-g1 latin-iso8859-1
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102 eol-type nil
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103 mnemonic "CText"))
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104
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105 ;;; iso-8859-1 and ctext are aliases.
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106
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107 ;; (copy-coding-system 'ctext 'iso-8859-1)
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108 (make-coding-system
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109 'iso-8859-1 'no-conversion
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110 "Coding-system used in X as Compound Text Encoding."
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111 '(eol-type nil mnemonic "Noconv"))
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112
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113 (make-coding-system
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114 'iso-2022-8bit-ss2 'iso2022
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115 "ISO-2022 coding system using SS2 for 96-charset in 8-bit code."
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116 '(charset-g0 ascii
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117 charset-g1 latin-iso8859-1
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118 charset-g2 t ;; unspecified but can be used later.
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119 short t
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120 mnemonic "ISO8/SS"
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121 ))
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122
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123 (make-coding-system
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124 'iso-2022-7bit-ss2 'iso2022
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125 "ISO-2022 coding system using SS2 for 96-charset in 7-bit code."
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126 '(charset-g0 ascii
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127 charset-g2 t ;; unspecified but can be used later.
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128 seven t
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129 short t
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130 mnemonic "ISO7/SS"
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131 eol-type nil))
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132
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133 ;; (copy-coding-system 'iso-2022-7bit-ss2 'iso-2022-jp-2)
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134 (make-coding-system
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135 'iso-2022-jp-2 'iso2022
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136 "ISO-2022 coding system using SS2 for 96-charset in 7-bit code."
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137 '(charset-g0 ascii
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138 charset-g2 t ;; unspecified but can be used later.
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139 seven t
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140 short t
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141 mnemonic "ISO7/SS"
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142 eol-type nil))
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143
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144 (make-coding-system
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145 'iso-2022-7bit 'iso2022
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146 "ISO 2022 based 7-bit encoding using only G0"
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147 '(charset-g0 ascii
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148 seven t
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149 short t
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150 mnemonic "ISO7"))
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151
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152 ;; compatibility for old XEmacsen
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153 (copy-coding-system 'iso-2022-7bit 'iso-2022-7)
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154
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155 (make-coding-system
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156 'iso-2022-8 'iso2022
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157 "ISO-2022 eight-bit coding system. No single-shift or locking-shift."
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158 '(charset-g0 ascii
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159 charset-g1 latin-iso8859-1
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160 short t
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161 mnemonic "ISO8"
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162 ))
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163
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164 (make-coding-system
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165 'escape-quoted 'iso2022
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166 "ISO-2022 eight-bit coding system with escape quoting; used for .ELC files."
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167 '(charset-g0 ascii
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168 charset-g1 latin-iso8859-1
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169 eol-type lf
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170 escape-quoted t
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171 mnemonic "ESC/Quot"
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172 ))
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173
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174 (make-coding-system
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175 'iso-2022-lock 'iso2022
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176 "ISO-2022 coding system using Locking-Shift for 96-charset."
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177 '(charset-g0 ascii
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178 charset-g1 t ;; unspecified but can be used later.
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179 seven t
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180 lock-shift t
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181 mnemonic "ISO7/Lock"
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182 ))
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183
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184 ;; initialize the coding categories to something semi-reasonable
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185 ;; so that the remaining Lisp files can contain extended characters.
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186 ;; (They will be in ISO-7 format)
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448
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187 ;; #### This list needs to be synched with the ones in mule-cmds.el.
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188
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448
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189 (set-coding-priority-list '(iso-7
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190 no-conversion
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191 ;; utf-8
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192 iso-8-1
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193 iso-8-2
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194 iso-8-designate
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195 iso-lock-shift
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196 shift-jis
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197 big5
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198 ;; ucs-4
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199 ))
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200
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201 (set-coding-category-system 'iso-7 'iso-2022-7)
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202 (set-coding-category-system 'iso-8-designate 'ctext)
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203 (set-coding-category-system 'iso-8-1 'ctext)
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204 (set-coding-category-system 'iso-lock-shift 'iso-2022-lock)
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205 (set-coding-category-system 'no-conversion 'no-conversion)
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206
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207 (setq-default buffer-file-coding-system 'iso-2022-8)
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208
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209 ;;; mule-coding.el ends here
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