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1 ;;; emu-x20.el --- emu API implementation for XEmacs 20 with mule
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2
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3 ;; Copyright (C) 1994,1995,1996,1997 MORIOKA Tomohiko
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4
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5 ;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
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6 ;; Version: $Id: emu-x20.el,v 1.1 1997/06/03 04:18:35 steve Exp $
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7 ;; Keywords: emulation, compatibility, Mule, XEmacs
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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 ;; This program is free software; you can redistribute it and/or
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12 ;; modify it under the terms of the GNU General Public License as
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13 ;; published by the Free Software Foundation; either version 2, or (at
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14 ;; your option) any later version.
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15
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16 ;; This program 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 GNU 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 ;; This module requires XEmacs 20.1 b12 or later with mule.
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29
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30 ;;; Code:
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31
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32 (require 'cyrillic)
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33 (require 'emu-xemacs)
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34
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35
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36 ;;; @ coding-system
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37 ;;;
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38
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39 (defconst *noconv* 'binary)
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40
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41 (defmacro as-binary-process (&rest body)
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42 `(let (selective-display ; Disable ^M to nl translation.
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43 (coding-system-for-read 'binary)
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44 (coding-system-for-write 'binary))
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45 ,@body))
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46
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47 (defmacro as-binary-input-file (&rest body)
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48 `(let ((coding-system-for-read 'binary))
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49 ,@body))
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50
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51 (defmacro as-binary-output-file (&rest body)
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52 `(let ((coding-system-for-write 'binary))
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53 ,@body))
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54
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55
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56 ;;; @ binary access
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57 ;;;
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58
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59 (defun insert-binary-file-contents-literally
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60 (filename &optional visit beg end replace)
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61 "Like `insert-file-contents-literally', q.v., but don't code conversion.
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62 A buffer may be modified in several ways after reading into the buffer due
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63 to advanced Emacs features, such as file-name-handlers, format decoding,
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64 find-file-hooks, etc.
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65 This function ensures that none of these modifications will take place."
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66 (let ((coding-system-for-read 'binary))
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67 (insert-file-contents-literally filename visit beg end replace)
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68 ))
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69
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70
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71 ;;; @ MIME charset
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72 ;;;
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73
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74 (defvar charsets-mime-charset-alist
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75 '(((ascii) . us-ascii)
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76 ((ascii latin-iso8859-1) . iso-8859-1)
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77 ((ascii latin-iso8859-2) . iso-8859-2)
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78 ((ascii latin-iso8859-3) . iso-8859-3)
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79 ((ascii latin-iso8859-4) . iso-8859-4)
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80 ;;; ((ascii cyrillic-iso8859-5) . iso-8859-5)
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81 ((ascii cyrillic-iso8859-5) . koi8-r)
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82 ((ascii arabic-iso8859-6) . iso-8859-6)
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83 ((ascii greek-iso8859-7) . iso-8859-7)
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84 ((ascii hebrew-iso8859-8) . iso-8859-8)
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85 ((ascii latin-iso8859-9) . iso-8859-9)
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86 ((ascii latin-jisx0201
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87 japanese-jisx0208-1978 japanese-jisx0208) . iso-2022-jp)
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88 ((ascii korean-ksc5601) . euc-kr)
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89 ((ascii chinese-gb2312) . cn-gb-2312)
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90 ((ascii chinese-big5-1 chinese-big5-2) . cn-big5)
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91 ((ascii latin-iso8859-1 greek-iso8859-7
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92 latin-jisx0201 japanese-jisx0208-1978
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93 chinese-gb2312 japanese-jisx0208
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94 korean-ksc5601 japanese-jisx0212) . iso-2022-jp-2)
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95 ((ascii latin-iso8859-1 greek-iso8859-7
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96 latin-jisx0201 japanese-jisx0208-1978
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97 chinese-gb2312 japanese-jisx0208
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98 korean-ksc5601 japanese-jisx0212
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99 chinese-cns11643-1 chinese-cns11643-2) . iso-2022-int-1)
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100 ((ascii latin-iso8859-1 latin-iso8859-2
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101 cyrillic-iso8859-5 greek-iso8859-7
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102 latin-jisx0201 japanese-jisx0208-1978
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103 chinese-gb2312 japanese-jisx0208
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104 korean-ksc5601 japanese-jisx0212
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105 chinese-cns11643-1 chinese-cns11643-2
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106 chinese-cns11643-3 chinese-cns11643-4
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107 chinese-cns11643-5 chinese-cns11643-6
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108 chinese-cns11643-7) . iso-2022-int-1)
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109 ))
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110
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111 (defvar default-mime-charset 'x-ctext)
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112
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113 (defvar mime-charset-coding-system-alist
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114 '((iso-8859-1 . ctext)
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115 (x-ctext . ctext)
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116 (hz-gb-2312 . hz)
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117 (cn-gb-2312 . euc-china)
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118 (gb2312 . euc-china)
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119 (cn-big5 . big5)
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120 (koi8-r . koi8)
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121 (iso-2022-jp-2 . iso-2022-ss2-7)
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122 ))
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123
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124 (defun mime-charset-to-coding-system (charset)
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125 "Return coding-system by MIME charset."
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126 (if (stringp charset)
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127 (setq charset (intern (downcase charset)))
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128 )
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129 (or (cdr (assq charset mime-charset-coding-system-alist))
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130 (and (memq charset (coding-system-list)) charset)
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131 ))
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132
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133 (defun detect-mime-charset-region (start end)
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134 "Return MIME charset for region between START and END."
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135 (charsets-to-mime-charset (charsets-in-region start end)))
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136
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137 (defun encode-mime-charset-region (start end charset)
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138 "Encode the text between START and END as MIME CHARSET."
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139 (let ((cs (mime-charset-to-coding-system charset)))
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140 (if cs
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141 (encode-coding-region start end cs)
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142 )))
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143
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144 (defun decode-mime-charset-region (start end charset)
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145 "Decode the text between START and END as MIME CHARSET."
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146 (let ((cs (mime-charset-to-coding-system charset)))
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147 (if cs
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148 (decode-coding-region start end cs)
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149 )))
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150
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151 (defun encode-mime-charset-string (string charset)
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152 "Encode the STRING as MIME CHARSET."
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153 (let ((cs (mime-charset-to-coding-system charset)))
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154 (if cs
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155 (encode-coding-string string cs)
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156 string)))
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157
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158 (defun decode-mime-charset-string (string charset)
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159 "Decode the STRING as MIME CHARSET."
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160 (let ((cs (mime-charset-to-coding-system charset)))
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161 (if cs
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162 (decode-coding-string string cs)
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163 string)))
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164
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165
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166 ;;; @ character
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167 ;;;
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168
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169 ;;; @@ Mule emulating aliases
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170 ;;;
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171 ;;; You should not use them.
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172
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173 (defalias 'char-leading-char 'char-charset)
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174
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175 (defun char-category (character)
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176 "Return string of category mnemonics for CHAR in TABLE.
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177 CHAR can be any multilingual character
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178 TABLE defaults to the current buffer's category table."
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179 (mapconcat (lambda (chr)
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180 (char-to-string (int-char chr))
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181 )
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182 (char-category-list character)
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183 ""))
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184
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185
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186 ;;; @ string
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187 ;;;
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188
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189 (defun string-to-int-list (str)
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190 (mapcar #'char-int str)
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191 )
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192
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193
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194 ;;; @ end
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195 ;;;
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196
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197 (provide 'emu-x20)
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198
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199 ;;; emu-x20.el ends here
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