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1 ;;; mule-coding.el --- Coding-system functions for Mule.
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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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22 ;; along with XEmacs; see the file COPYING. If not, write to the
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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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34 (unless (integerp register)
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35 (signal 'wrong-type-argument (list 'integerp register)))
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36 (coding-system-property
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37 coding-system
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38 (case register
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39 (0 'force-g0-on-output)
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40 (1 'force-g1-on-output)
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41 (2 'force-g2-on-output)
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42 (3 'force-g3-on-output)
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43 (t (signal 'args-out-of-range (list register 0 3))))))
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44
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45 (defun coding-system-short (coding-system)
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46 "Return the 'short property of CODING-SYSTEM."
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47 (coding-system-property coding-system 'short))
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48
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49 (defun coding-system-no-ascii-eol (coding-system)
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50 "Return the 'no-ascii-eol property of CODING-SYSTEM."
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51 (coding-system-property coding-system 'no-ascii-eol))
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52
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53 (defun coding-system-no-ascii-cntl (coding-system)
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54 "Return the 'no-ascii-cntl property of CODING-SYSTEM."
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55 (coding-system-property coding-system 'no-ascii-cntl))
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56
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57 (defun coding-system-seven (coding-system)
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58 "Return the 'seven property of CODING-SYSTEM."
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59 (coding-system-property coding-system 'seven))
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60
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61 (defun coding-system-lock-shift (coding-system)
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62 "Return the 'lock-shift property of CODING-SYSTEM."
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63 (coding-system-property coding-system 'lock-shift))
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64
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65 ;;(defun coding-system-use-japanese-jisx0201-roman (coding-system)
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66 ;; "Return the 'use-japanese-jisx0201-roman property of CODING-SYSTEM."
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67 ;; (coding-system-property coding-system 'use-japanese-jisx0201-roman))
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68
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69 ;;(defun coding-system-use-japanese-jisx0208-1978 (coding-system)
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70 ;; "Return the 'use-japanese-jisx0208-1978 property of CODING-SYSTEM."
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71 ;; (coding-system-property coding-system 'use-japanese-jisx0208-2978))
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72
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73 (defun coding-system-no-iso6429 (coding-system)
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74 "Return the 'no-iso6429 property of CODING-SYSTEM."
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75 (coding-system-property coding-system 'no-iso6429))
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76
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77 (defun coding-system-ccl-encode (coding-system)
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78 "Return the CCL 'encode property of CODING-SYSTEM."
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79 (coding-system-property coding-system 'encode))
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80
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81 (defun coding-system-ccl-decode (coding-system)
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82 "Return the CCL 'decode property of CODING-SYSTEM."
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83 (coding-system-property coding-system 'decode))
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84
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85
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86 ;;;; Definitions of predefined coding systems
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87
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88 (make-coding-system
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89 'ctext 'iso2022
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90 "Coding-system used in X as Compound Text Encoding."
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91 '(charset-g0 ascii
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92 charset-g1 latin-iso8859-1
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93 eol-type nil
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94 mnemonic "CText"))
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95
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96 ;;; iso-8859-1 and ctext are aliases.
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97
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98 ;; (copy-coding-system 'ctext 'iso-8859-1)
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99 (make-coding-system
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100 'iso-8859-1 'no-conversion
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101 "Coding-system used in X as Compound Text Encoding."
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102 '(eol-type nil mnemonic "Noconv"))
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103
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104 (make-coding-system
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105 'iso-2022-8bit-ss2 'iso2022
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106 "ISO-2022 coding system using SS2 for 96-charset in 8-bit code."
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107 '(charset-g0 ascii
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108 charset-g1 latin-iso8859-1
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109 charset-g2 t ;; unspecified but can be used later.
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110 short t
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111 mnemonic "ISO8/SS"
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112 ))
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113
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114 (make-coding-system
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115 'iso-2022-7bit-ss2 'iso2022
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116 "ISO-2022 coding system using SS2 for 96-charset in 7-bit code."
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117 '(charset-g0 ascii
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118 charset-g2 t ;; unspecified but can be used later.
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119 seven t
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120 short t
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121 mnemonic "ISO7/SS"
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122 eol-type nil))
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123
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124 ;; (copy-coding-system 'iso-2022-7bit-ss2 'iso-2022-jp-2)
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125 (make-coding-system
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126 'iso-2022-jp-2 'iso2022
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127 "ISO-2022 coding system using SS2 for 96-charset in 7-bit code."
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128 '(charset-g0 ascii
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129 charset-g2 t ;; unspecified but can be used later.
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130 seven t
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131 short t
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132 mnemonic "ISO7/SS"
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133 eol-type nil))
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134
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135 (make-coding-system
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136 'iso-2022-7bit 'iso2022
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137 "ISO 2022 based 7-bit encoding using only G0"
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138 '(charset-g0 ascii
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139 seven t
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140 short t
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141 mnemonic "ISO7"))
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142
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143 ;; compatibility for old XEmacsen
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144 (copy-coding-system 'iso-2022-7bit 'iso-2022-7)
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145
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146 (make-coding-system
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147 'iso-2022-8 'iso2022
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148 "ISO-2022 eight-bit coding system. No single-shift or locking-shift."
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149 '(charset-g0 ascii
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150 charset-g1 latin-iso8859-1
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151 short t
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152 mnemonic "ISO8"
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153 ))
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154
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155 (make-coding-system
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156 'escape-quoted 'iso2022
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157 "ISO-2022 eight-bit coding system with escape quoting; used for .ELC files."
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158 '(charset-g0 ascii
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159 charset-g1 latin-iso8859-1
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160 eol-type lf
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161 escape-quoted t
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162 mnemonic "ESC/Quot"
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163 ))
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164
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165 (make-coding-system
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166 'iso-2022-lock 'iso2022
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167 "ISO-2022 coding system using Locking-Shift for 96-charset."
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168 '(charset-g0 ascii
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169 charset-g1 t ;; unspecified but can be used later.
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170 seven t
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171 lock-shift t
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172 mnemonic "ISO7/Lock"
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173 ))
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174
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175 ;; initialize the coding categories to something semi-reasonable
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176 ;; so that the remaining Lisp files can contain extended characters.
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177 ;; (They will be in ISO-7 format)
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178
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179 (set-coding-priority-list '(iso-8-2 iso-8-designate iso-8-1
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180 iso-7 iso-lock-shift no-conversion))
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181
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182 (set-coding-category-system 'iso-7 'iso-2022-7)
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183 (set-coding-category-system 'iso-8-designate 'ctext)
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184 (set-coding-category-system 'iso-8-1 'ctext)
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185 (set-coding-category-system 'iso-lock-shift 'iso-2022-lock)
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186 (set-coding-category-system 'no-conversion 'no-conversion)
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187
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188 ;;; mule-coding.el ends here
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