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1 ;;; mule-coding.el --- Coding-system functions for Mule.
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2
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197
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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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70
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5 ;; Copyright (C) 1995 Amdahl Corporation.
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6 ;; Copyright (C) 1995 Sun Microsystems.
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197
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7 ;; Copyright (C) 1997 MORIOKA Tomohiko
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70
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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.
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29
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30 ;;; Code:
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31
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197
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32 (defalias 'check-coding-system 'get-coding-system)
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33
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34 (defun modify-coding-system-alist (target-type regexp coding-system)
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35 "Modify one of look up tables for finding a coding system on I/O operation.
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36 There are three of such tables, `file-coding-system-alist',
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37 `process-coding-system-alist', and `network-coding-system-alist'.
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38
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39 TARGET-TYPE specifies which of them to modify.
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40 If it is `file', it affects `file-coding-system-alist' (which see).
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41 If it is `process', it affects `process-coding-system-alist' (which see).
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42 If it is `network', it affects `network-codign-system-alist' (which see).
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43
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44 REGEXP is a regular expression matching a target of I/O operation.
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45 The target is a file name if TARGET-TYPE is `file', a program name if
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46 TARGET-TYPE is `process', or a network service name or a port number
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47 to connect to if TARGET-TYPE is `network'.
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48
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49 CODING-SYSTEM is a coding system to perform code conversion on the I/O
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50 operation, or a cons cell (DECODING . ENCODING) specifying the coding systems
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51 for decoding and encoding respectively,
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52 or a function symbol which, when called, returns such a cons cell."
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53 (or (memq target-type '(file process network))
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54 (error "Invalid target type: %s" target-type))
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55 (or (stringp regexp)
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56 (and (eq target-type 'network) (integerp regexp))
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57 (error "Invalid regular expression: %s" regexp))
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58 (if (symbolp coding-system)
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59 (if (not (fboundp coding-system))
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60 (progn
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61 (check-coding-system coding-system)
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62 (setq coding-system (cons coding-system coding-system))))
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63 (check-coding-system (car coding-system))
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64 (check-coding-system (cdr coding-system)))
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65 (cond ((eq target-type 'file)
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66 (let ((slot (assoc regexp file-coding-system-alist)))
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67 (if slot
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68 (setcdr slot coding-system)
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69 (setq file-coding-system-alist
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70 (cons (cons regexp coding-system)
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71 file-coding-system-alist)))))
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72 ((eq target-type 'process)
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73 (let ((slot (assoc regexp process-coding-system-alist)))
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74 (if slot
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75 (setcdr slot coding-system)
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76 (setq process-coding-system-alist
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77 (cons (cons regexp coding-system)
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78 process-coding-system-alist)))))
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79 (t
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80 (let ((slot (assoc regexp network-coding-system-alist)))
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81 (if slot
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82 (setcdr slot coding-system)
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83 (setq network-coding-system-alist
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84 (cons (cons regexp coding-system)
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85 network-coding-system-alist)))))))
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86
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102
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87 (defun set-keyboard-coding-system (coding-system)
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88 "Set the coding system used for TTY keyboard input. Currently broken."
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89 (interactive "zkeyboard-coding-system: ")
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90 (get-coding-system coding-system) ; correctness check
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91 (setq keyboard-coding-system coding-system)
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92 (redraw-modeline t))
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93
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94 (defun set-terminal-coding-system (coding-system)
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102
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95 "Set the coding system used for TTY display output. Currently broken."
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96 (interactive "zterminal-coding-system: ")
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102
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97 (get-coding-system coding-system) ; correctness check
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98 (setq terminal-coding-system coding-system)
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99 (redraw-modeline t))
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100
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101 (defun set-pathname-coding-system (coding-system)
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102 "Set the coding system used for file system path names."
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103 (interactive "zPathname-coding-system: ")
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102
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104 (get-coding-system coding-system) ; correctness check
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105 (setq file-name-coding-system coding-system))
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106
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107 (defun what-coding-system (start end &optional arg)
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108 "Show the encoding of text in the region.
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109 This function is meant to be called interactively;
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110 from a Lisp program, use `detect-coding-region' instead."
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111 (interactive "r\nP")
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112 (princ (detect-coding-region start end)))
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113
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114 (defun decode-coding-string (str coding-system)
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115 "Decode the string STR which is encoded in CODING-SYSTEM.
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116 Does not modify STR. Returns the decoded string on successful conversion."
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117 (with-string-as-buffer-contents
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118 str (decode-coding-region (point-min) (point-max) coding-system)))
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119
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120 (defun encode-coding-string (str coding-system)
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121 "Encode the string STR using CODING-SYSTEM.
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122 Does not modify STR. Returns the encoded string on successful conversion."
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123 (with-string-as-buffer-contents
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124 str (encode-coding-region (point-min) (point-max) coding-system)))
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125
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126
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127 ;;;; Coding system accessors
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128
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129 (defun coding-system-mnemonic (coding-system)
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130 "Return the 'mnemonic property of CODING-SYSTEM."
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131 (coding-system-property coding-system 'mnemonic))
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132
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133 (defalias 'coding-system-docstring 'coding-system-doc-string)
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134
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135 (defun coding-system-eol-type (coding-system)
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136 "Return the 'eol-type property of CODING-SYSTEM."
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137 (coding-system-property coding-system 'eol-type))
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138
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139 (defun coding-system-eol-lf (coding-system)
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140 "Return the 'eol-lf property of CODING-SYSTEM."
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141 (coding-system-property coding-system 'eol-lf))
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142
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143 (defun coding-system-eol-crlf (coding-system)
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144 "Return the 'eol-crlf property of CODING-SYSTEM."
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145 (coding-system-property coding-system 'eol-crlf))
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146
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147 (defun coding-system-eol-cr (coding-system)
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148 "Return the 'eol-cr property of CODING-SYSTEM."
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149 (coding-system-property coding-system 'eol-cr))
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150
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151 (defun coding-system-post-read-conversion (coding-system)
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152 "Return the 'post-read-conversion property of CODING-SYSTEM."
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153 (coding-system-property coding-system 'post-read-conversion))
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154
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155 (defun coding-system-pre-write-conversion (coding-system)
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156 "Return the 'pre-write-conversion property of CODING-SYSTEM."
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157 (coding-system-property coding-system 'pre-write-conversion))
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158
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159 (defun coding-system-charset (coding-system register)
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160 "Return the 'charset property of CODING-SYSTEM for the specified REGISTER."
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102
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161 (unless (integerp register)
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162 (signal 'wrong-type-argument (list 'integerp register)))
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163 (coding-system-property
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164 coding-system
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165 (case register
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166 (0 'charset-g0)
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167 (1 'charset-g1)
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168 (2 'charset-g2)
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169 (3 'charset-g3)
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170 (t (signal 'args-out-of-range (list register 0 3))))))
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171
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172 (defun coding-system-force-on-output (coding-system register)
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173 "Return the 'force-on-output property of CODING-SYSTEM for the specified REGISTER."
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102
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174 (unless (integerp register)
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175 (signal 'wrong-type-argument (list 'integerp register)))
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176 (coding-system-property
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177 coding-system
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178 (case register
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179 (0 'force-g0-on-output)
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180 (1 'force-g1-on-output)
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181 (2 'force-g2-on-output)
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182 (3 'force-g3-on-output)
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183 (t (signal 'args-out-of-range (list register 0 3))))))
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184
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185 (defun coding-system-short (coding-system)
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186 "Return the 'short property of CODING-SYSTEM."
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187 (coding-system-property coding-system 'short))
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188
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189 (defun coding-system-no-ascii-eol (coding-system)
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190 "Return the 'no-ascii-eol property of CODING-SYSTEM."
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191 (coding-system-property coding-system 'no-ascii-eol))
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192
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193 (defun coding-system-no-ascii-cntl (coding-system)
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194 "Return the 'no-ascii-cntl property of CODING-SYSTEM."
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195 (coding-system-property coding-system 'no-ascii-cntl))
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196
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197 (defun coding-system-seven (coding-system)
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198 "Return the 'seven property of CODING-SYSTEM."
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199 (coding-system-property coding-system 'seven))
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200
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201 (defun coding-system-lock-shift (coding-system)
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202 "Return the 'lock-shift property of CODING-SYSTEM."
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203 (coding-system-property coding-system 'lock-shift))
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204
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102
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205 ;;(defun coding-system-use-japanese-jisx0201-roman (coding-system)
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206 ;; "Return the 'use-japanese-jisx0201-roman property of CODING-SYSTEM."
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207 ;; (coding-system-property coding-system 'use-japanese-jisx0201-roman))
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208
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102
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209 ;;(defun coding-system-use-japanese-jisx0208-1978 (coding-system)
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210 ;; "Return the 'use-japanese-jisx0208-1978 property of CODING-SYSTEM."
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211 ;; (coding-system-property coding-system 'use-japanese-jisx0208-2978))
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212
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213 (defun coding-system-no-iso6429 (coding-system)
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214 "Return the 'no-iso6429 property of CODING-SYSTEM."
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215 (coding-system-property coding-system 'no-iso6429))
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216
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217 (defun coding-system-ccl-encode (coding-system)
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218 "Return the CCL 'encode property of CODING-SYSTEM."
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219 (coding-system-property coding-system 'encode))
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220
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221 (defun coding-system-ccl-decode (coding-system)
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222 "Return the CCL 'decode property of CODING-SYSTEM."
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223 (coding-system-property coding-system 'decode))
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224
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225
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226 ;;;; Definitions of predefined coding systems
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227
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228 (make-coding-system
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229 'automatic-conversion 'automatic-conversion
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230 "Automatic conversion."
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231 '(mnemonic "Auto"))
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232
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233 (make-coding-system
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234 'ctext 'iso2022
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235 "Coding-system used in X as Compound Text Encoding."
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236 '(charset-g0 ascii
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237 charset-g1 latin-iso8859-1
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238 eol-type lf
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239 mnemonic "CText"
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240 ))
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241
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102
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242 ;;; iso-8859-1 and ctext are aliases.
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243
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244 (copy-coding-system 'ctext 'iso-8859-1)
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245
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246 (make-coding-system
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185
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247 'iso-2022-8bit-ss2 'iso2022
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248 "ISO-2022 coding system using SS2 for 96-charset in 8-bit code."
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249 '(charset-g0 ascii
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250 charset-g1 latin-iso8859-1
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251 charset-g2 t ;; unspecified but can be used later.
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252 short t
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253 mnemonic "ISO8/SS"
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254 ))
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255
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256 (make-coding-system
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257 'iso-2022-7bit-ss2 'iso2022
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258 "ISO-2022 coding system using SS2 for 96-charset in 7-bit code."
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259 '(charset-g0 ascii
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260 charset-g2 t ;; unspecified but can be used later.
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261 seven t
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262 short t
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263 mnemonic "ISO7/SS"
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264 ))
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265
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266 (copy-coding-system 'iso-2022-7bit-ss2 'iso-2022-jp-2)
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267
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268 (make-coding-system
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269 'iso-2022-7bit 'iso2022
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270 "ISO 2022 based 7-bit encoding using only G0"
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271 '(charset-g0 ascii
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272 seven t
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273 short t
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274 mnemonic "ISO7"))
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275
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276 ;; compatibility for old XEmacsen
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277 (copy-coding-system 'iso-2022-7bit 'iso-2022-7)
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278
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279 (make-coding-system
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280 'iso-2022-8 'iso2022
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281 "ISO-2022 eight-bit coding system. No single-shift or locking-shift."
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282 '(charset-g0 ascii
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283 charset-g1 latin-iso8859-1
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284 short t
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285 mnemonic "ISO8"
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286 ))
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287
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288 (make-coding-system
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289 'escape-quoted 'iso2022
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290 "ISO-2022 eight-bit coding system with escape quoting; used for .ELC files."
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291 '(charset-g0 ascii
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292 charset-g1 latin-iso8859-1
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293 eol-type lf
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294 escape-quoted t
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295 mnemonic "ESC/Quot"
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296 ))
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297
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298 (make-coding-system
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299 'iso-2022-lock 'iso2022
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300 "ISO-2022 coding system using Locking-Shift for 96-charset."
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301 '(charset-g0 ascii
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302 charset-g1 t ;; unspecified but can be used later.
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303 seven t
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304 lock-shift t
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305 mnemonic "ISO7/Lock"
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306 ))
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307
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308 ;; initialize the coding categories to something semi-reasonable
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309 ;; so that the remaining Lisp files can contain extended characters.
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310 ;; (They will be in ISO-7 format)
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311
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312 (set-coding-priority-list '(iso-8-2 iso-8-designate iso-8-1
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313 iso-7 iso-lock-shift no-conversion))
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314
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315 (set-coding-category-system 'iso-7 'iso-2022-7)
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316 (set-coding-category-system 'iso-8-designate 'ctext)
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317 (set-coding-category-system 'iso-8-1 'ctext)
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318 (set-coding-category-system 'iso-lock-shift 'iso-2022-lock)
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319 (set-coding-category-system 'no-conversion 'no-conversion)
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114
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320
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321 (make-compatible-variable 'enable-multibyte-characters "Unimplemented")
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322
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197
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323 (define-obsolete-variable-alias
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324 'pathname-coding-system 'file-name-coding-system)
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325
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114
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326 ;;; mule-coding.el ends here
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