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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) 1995 Free Software Foundation, Inc.
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4 ;; Copyright (C) 1994,1995,1996 MORIOKA Tomohiko
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5
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6 ;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
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7 ;; Version: $Id: emu-x20.el,v 1.1.1.1 1996/12/18 22:43:38 steve Exp $
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8 ;; Keywords: emulation, compatibility, Mule, XEmacs
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9
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10 ;; This file is part of tl (Tiny Library).
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11
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12 ;; This program is free software; you can redistribute it and/or
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13 ;; modify it under the terms of the GNU General Public License as
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14 ;; published by the Free Software Foundation; either version 2, or (at
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15 ;; your option) any later version.
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16
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17 ;; This program is distributed in the hope that it will be useful, but
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18 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
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19 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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20 ;; General Public License for more details.
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21
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22 ;; You should have received a copy of the GNU General Public License
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23 ;; along with GNU XEmacs; see the file COPYING. If not, write to the
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24 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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25 ;; Boston, MA 02111-1307, USA.
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26
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27 ;;; Code:
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28
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29 (require 'cyrillic)
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30 (require 'emu-xemacs)
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31
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32 (defvar xemacs-beta-version
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33 (if (string-match "(beta\\([0-9]+\\))" emacs-version)
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34 (string-to-number
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35 (substring emacs-version (match-beginning 1)(match-end 1))
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36 )))
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37
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38
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39 ;;; @ character set
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40 ;;;
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41
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42 (defalias 'charset-description 'charset-doc-string)
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43
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44 (defalias 'find-charset-string 'charsets-in-string)
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45 (defalias 'find-charset-region 'charsets-in-region)
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46
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47 (defun find-non-ascii-charset-string (string)
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48 "Return a list of charsets in the STRING except ascii.
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49 \[emu-x20.el; Mule emulating function]"
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50 (delq 'ascii (charsets-in-string string))
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51 )
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52
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53 (defun find-non-ascii-charset-region (start end)
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54 "Return a list of charsets except ascii
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55 in the region between START and END.
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56 \[emu-x20.el; Mule emulating function]"
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57 (delq 'ascii (charsets-in-region start end))
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58 )
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59
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60 ;;; @@ for Mule emulation
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61 ;;;
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62
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63 (defconst lc-ascii 'ascii)
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64 (defconst lc-ltn1 'latin-1)
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65 (defconst lc-ltn2 'latin-2)
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66 (defconst lc-ltn3 'latin-3)
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67 (defconst lc-ltn4 'latin-4)
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68 (defconst lc-crl 'cyrillic)
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69 (defconst lc-arb 'arabic)
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70 (defconst lc-grk 'greek)
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71 (defconst lc-hbw 'hebrew)
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72 (defconst lc-ltn5 'latin-5)
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73 (defconst lc-jp 'japanese-jisx0208)
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74 (defconst lc-jp2 'japanese-jisx0212)
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75 (defconst lc-kr 'korean-ksc5601)
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76 (defconst lc-big5-1 'chinese-big5-1)
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77 (defconst lc-big5-2 'chinese-big5-2)
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78 (defconst lc-cn 'chinese-gb)
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79 (defconst lc-cns1 'chinese-cns11643-1)
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80 (defconst lc-cns2 'chinese-cns11643-2)
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81 (defconst lc-cns3 'chinese-cns11643-3)
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82 (defconst lc-cns4 'chinese-cns11643-4)
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83 (defconst lc-cns5 'chinese-cns11643-5)
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84 (defconst lc-cns6 'chinese-cns11643-6)
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85 (defconst lc-cns7 'chinese-cns11643-7)
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86
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87
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88 ;;; @ coding-system
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89 ;;;
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90
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91 (defconst *noconv* 'no-conversion)
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92 (defconst *ctext* 'ctext)
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93 (defconst *hz* 'hz)
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94 (defconst *big5* 'big5)
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95 (defconst *euc-kr* 'euc-kr)
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96 (defconst *koi8* 'koi8)
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97
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98 (defalias 'set-buffer-file-coding-system 'set-file-coding-system)
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99
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100 (defmacro as-binary-process (&rest body)
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101 `(let (selective-display ; Disable ^M to nl translation.
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102 process-input-coding-system
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103 process-output-coding-system)
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104 ,@body))
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105
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106 (defmacro as-binary-input-file (&rest body)
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107 `(let ((file-coding-system-for-read 'no-conversion))
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108 ,@body))
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109
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110
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111 ;;; @ MIME charset
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112 ;;;
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113
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114 (defvar charsets-mime-charset-alist
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115 '(((ascii) . us-ascii)
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116 ((ascii latin-1) . iso-8859-1)
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117 ((ascii latin-2) . iso-8859-2)
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118 ((ascii latin-3) . iso-8859-3)
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119 ((ascii latin-4) . iso-8859-4)
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120 ;;; ((ascii cyrillic) . iso-8859-5)
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121 ((ascii cyrillic) . koi8-r)
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122 ((ascii arabic) . iso-8859-6)
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123 ((ascii greek) . iso-8859-7)
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124 ((ascii hebrew) . iso-8859-8)
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125 ((ascii latin-5) . iso-8859-9)
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126 ((ascii japanese-jisx0208-1978 japanese-jisx0208) . iso-2022-jp)
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127 ((ascii korean-ksc5601) . euc-kr)
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128 ((ascii chinese-big5-1 chinese-big5-2) . big5)
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129 ((ascii japanese-jisx0208-1978 chinese-gb
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130 japanese-jisx0208 korean-ksc5601
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131 japanese-jisx0212 latin-1 greek) . iso-2022-jp-2)
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132 ((ascii japanese-jisx0208-1978 chinese-gb japanese-jisx0208 korean-ksc5601
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133 japanese-jisx0212 chinese-cns11643-1 chinese-cns11643-2
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134 latin-1 greek) . iso-2022-int-1)
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135 ))
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136
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137 (defvar default-mime-charset 'iso-2022-int-1)
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138
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139 (defvar mime-charset-coding-system-alist
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140 '((iso-8859-1 . ctext)
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141 (gb2312 . euc-china)
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142 (koi8-r . koi8)
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143 (iso-2022-jp-2 . iso-2022-ss2-7)
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144 (x-iso-2022-jp-2 . iso-2022-ss2-7)
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145 (shift_jis . sjis)
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146 (x-shiftjis . sjis)
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147 ))
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148
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149 (defun mime-charset-to-coding-system (charset)
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150 "Return coding-system by MIME charset. [emu-x20.el]"
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151 (if (stringp charset)
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152 (setq charset (intern (downcase charset)))
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153 )
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154 (or (cdr (assq charset mime-charset-coding-system-alist))
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155 (and (memq charset (coding-system-list)) charset)
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156 ))
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157
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158 (defun detect-mime-charset-region (start end)
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159 "Return MIME charset for region between START and END.
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160 \[emu-x20.el]"
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161 (charsets-to-mime-charset (charsets-in-region start end)))
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162
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163 (defun encode-mime-charset-region (start end charset)
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164 "Encode the text between START and END as MIME CHARSET.
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165 \[emu-x20.el]"
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166 (let ((cs (mime-charset-to-coding-system charset)))
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167 (if cs
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168 (encode-coding-region start end cs)
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169 )))
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170
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171 (defun decode-mime-charset-region (start end charset)
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172 "Decode the text between START and END as MIME CHARSET.
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173 \[emu-x20.el]"
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174 (let ((cs (mime-charset-to-coding-system charset)))
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175 (if cs
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176 (decode-coding-region start end cs)
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177 )))
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178
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179 (defun encode-mime-charset-string (string charset)
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180 "Encode the STRING as MIME CHARSET. [emu-x20.el]"
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181 (let ((cs (mime-charset-to-coding-system charset)))
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182 (if cs
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183 (encode-coding-string string cs)
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184 string)))
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185
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186 (defun decode-mime-charset-string (string charset)
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187 "Decode the STRING as MIME CHARSET. [emu-x20.el]"
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188 (let ((cs (mime-charset-to-coding-system charset)))
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189 (if cs
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190 (decode-coding-string string cs)
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191 string)))
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192
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193
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194 ;;; @ character
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195 ;;;
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196
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197 (defun char-bytes (chr) 1)
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198
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199 (defun char-length (character)
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200 "Return number of elements a CHARACTER occupies in a string or buffer.
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201 \[emu-x20.el]"
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202 1)
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203
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204 (defun char-columns (character)
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205 "Return number of columns a CHARACTER occupies when displayed.
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206 \[emu-x20.el]"
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207 (charset-columns (char-charset character))
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208 )
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209
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210 ;;; @@ Mule emulating aliases
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211 ;;;
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212 ;;; You should not use them.
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213
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214 (defalias 'char-width 'char-columns)
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215
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216 (defalias 'char-leading-char 'char-charset)
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217
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218 (defun char-category (character)
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219 "Return string of category mnemonics for CHAR in TABLE.
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220 CHAR can be any multilingual character
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221 TABLE defaults to the current buffer's category table.
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222 \[emu-x20.el; Mule emulating function]"
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223 (mapconcat (lambda (chr)
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224 (char-to-string (int-char chr))
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225 )
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226 (char-category-list character)
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227 ""))
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228
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229
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230 ;;; @ string
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231 ;;;
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232
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233 (defun string-columns (string)
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234 "Return number of columns STRING occupies when displayed.
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235 \[emu-x20.el]"
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236 (let ((col 0)
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237 (len (length string))
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238 (i 0))
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239 (while (< i len)
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240 (setq col (+ col (char-columns (aref string i))))
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241 (setq i (1+ i))
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242 )
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243 col))
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244
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245 (defalias 'string-width 'string-columns)
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246
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247 (defun string-to-int-list (str)
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248 (mapcar #'char-int str)
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249 )
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250
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251 (defalias 'sref 'aref)
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252
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253 (defun truncate-string (str width &optional start-column)
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254 "Truncate STR to fit in WIDTH columns.
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255 Optional non-nil arg START-COLUMN specifies the starting column.
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256 \[emu-x20.el; Mule 2.3 emulating function]"
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257 (or start-column
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258 (setq start-column 0))
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259 (substring str start-column width)
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260 )
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261
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262
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263 ;;; @ end
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264 ;;;
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265
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266 (provide 'emu-x20)
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267
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268 ;;; emu-x20.el ends here
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