1 | ;;; pces-om.el --- pces implementation for Mule 1.* and Mule 2.* |
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2 | |
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3 | ;; Copyright (C) 1995,1996,1997,1998,1999 Free Software Foundation, Inc. |
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4 | |
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5 | ;; Author: MORIOKA Tomohiko <tomo@m17n.org> |
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6 | ;; Katsumi Yamaoka <yamaoka@jpl.org> |
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7 | ;; Keywords: emulation, compatibility, Mule |
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8 | |
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9 | ;; This file is part of APEL (A Portable Emacs Library). |
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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 Emacs; 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 | ;;; Code: |
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27 | |
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28 | (require 'poe) |
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29 | |
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30 | |
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31 | ;;; @ version specific features |
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32 | ;;; |
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33 | |
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34 | (cond ((= emacs-major-version 19) |
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35 | (define-ccl-program poem-ccl-decode-raw-text |
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36 | '(1 |
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37 | ((r2 = 0) |
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38 | (read r0) |
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39 | (loop |
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40 | (if (r0 == ?\x0d) |
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41 | ((r2 = 1) |
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42 | (read-if (r1 == ?\x0a) |
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43 | ((r0 = ?\x0a) |
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44 | (r2 = 0) |
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45 | (write-read-repeat r0)) |
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46 | ((write r0) |
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47 | (r0 = (r1 + 0)) |
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48 | (repeat)))) |
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49 | ((r2 = 0) |
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50 | (write-read-repeat r0))))) |
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51 | ;; This EOF BLOCK won't work out in practice. So the last datum |
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52 | ;; might be lost if it's value is ?\x0d. |
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53 | (if r2 |
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54 | (write r0)) |
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55 | ) |
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56 | "Convert line-break code from CRLF to LF.") |
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57 | |
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58 | (define-ccl-program poem-ccl-encode-raw-text |
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59 | '(1 |
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60 | ((read r0) |
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61 | (loop (write-read-repeat r0)))) |
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62 | "Pass through without any conversions.") |
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63 | |
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64 | (define-ccl-program poem-ccl-encode-raw-text-CRLF |
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65 | '(2 |
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66 | ((loop |
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67 | (read-if (r0 == ?\x0a) |
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68 | (write "\x0d\x0a") |
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69 | (write r0)) |
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70 | (repeat)))) |
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71 | "Convert line-break code from LF to CRLF.") |
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72 | |
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73 | (make-coding-system |
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74 | 'raw-text 4 ?= |
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75 | "No conversion" |
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76 | nil |
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77 | (cons poem-ccl-decode-raw-text poem-ccl-encode-raw-text)) |
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78 | |
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79 | (make-coding-system |
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80 | 'raw-text-dos 4 ?= |
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81 | "No conversion" |
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82 | nil |
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83 | (cons poem-ccl-decode-raw-text poem-ccl-encode-raw-text-CRLF)) |
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84 | ) |
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85 | (t |
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86 | (defun poem-decode-raw-text (from to) |
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87 | (save-restriction |
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88 | (narrow-to-region from to) |
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89 | (goto-char (point-min)) |
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90 | (while (re-search-forward "\r$" nil t) |
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91 | (replace-match "") |
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92 | ))) |
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93 | (defun poem-encode-raw-text-CRLF (from to) |
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94 | (save-restriction |
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95 | (narrow-to-region from to) |
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96 | (goto-char (point-min)) |
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97 | (while (re-search-forward "\\(\\=\\|[^\r]\\)\n" nil t) |
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98 | (replace-match "\\1\r\n") |
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99 | ))) |
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100 | |
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101 | (make-coding-system 'raw-text nil ?= "No conversion") |
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102 | (put 'raw-text 'post-read-conversion 'poem-decode-raw-text) |
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103 | |
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104 | (make-coding-system 'raw-text-dos nil ?= "No conversion") |
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105 | (put 'raw-text-dos 'post-read-conversion 'poem-decode-raw-text) |
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106 | (put 'raw-text-dos 'pre-write-conversion 'poem-encode-raw-text-CRLF) |
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107 | )) |
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108 | |
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109 | |
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110 | ;;; @ coding system |
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111 | ;;; |
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112 | |
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113 | (defun-maybe find-coding-system (obj) |
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114 | "Return OBJ if it is a coding-system." |
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115 | (if (coding-system-p obj) |
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116 | obj)) |
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117 | |
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118 | (defun encode-coding-region (start end coding-system) |
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119 | "Encode the text between START and END to CODING-SYSTEM. |
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120 | \[EMACS 20 emulating function]" |
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121 | ;; If `coding-system' is nil, do nothing. |
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122 | (code-convert-region start end *internal* coding-system)) |
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123 | |
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124 | (defun decode-coding-region (start end coding-system) |
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125 | "Decode the text between START and END which is encoded in CODING-SYSTEM. |
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126 | \[EMACS 20 emulating function]" |
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127 | ;; If `coding-system' is nil, do nothing. |
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128 | (code-convert-region start end coding-system *internal*)) |
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129 | |
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130 | ;; XXX: Should we support optional NOCOPY argument? (only in Emacs 20.x) |
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131 | (defun encode-coding-string (str coding-system) |
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132 | "Encode the STRING to CODING-SYSTEM. |
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133 | \[EMACS 20 emulating function]" |
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134 | (if coding-system |
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135 | (code-convert-string str *internal* coding-system) |
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136 | ;;(code-convert-string str *internal* nil) returns nil instead of str. |
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137 | str)) |
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138 | |
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139 | ;; XXX: Should we support optional NOCOPY argument? (only in Emacs 20.x) |
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140 | (defun decode-coding-string (str coding-system) |
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141 | "Decode the string STR which is encoded in CODING-SYSTEM. |
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142 | \[EMACS 20 emulating function]" |
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143 | (if coding-system |
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144 | (let ((len (length str)) |
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145 | ret) |
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146 | (while (and (< 0 len) |
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147 | (null (setq ret |
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148 | (code-convert-string |
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149 | (substring str 0 len) |
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150 | coding-system *internal*)))) |
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151 | (setq len (1- len))) |
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152 | (concat ret (substring str len))) |
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153 | str)) |
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154 | |
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155 | (defalias 'detect-coding-region 'code-detect-region) |
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156 | |
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157 | (defalias 'set-buffer-file-coding-system 'set-file-coding-system) |
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158 | |
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159 | |
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160 | ;;; @ with code-conversion |
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161 | ;;; |
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162 | |
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163 | (cond |
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164 | ((and (>= emacs-major-version 19) (>= emacs-minor-version 23)) |
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165 | ;; Mule 2.0 or later. |
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166 | (defun insert-file-contents-as-coding-system |
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167 | (coding-system filename &optional visit beg end replace) |
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168 | "Like `insert-file-contents', q.v., but CODING-SYSTEM the first arg will |
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169 | be applied to `file-coding-system-for-read'." |
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170 | (let ((file-coding-system-for-read coding-system)) |
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171 | (insert-file-contents filename visit beg end replace)))) |
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172 | (t |
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173 | ;; Mule 1.1 or earlier. |
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174 | (defun insert-file-contents-as-coding-system |
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175 | (coding-system filename &optional visit beg end replace) |
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176 | "Like `insert-file-contents', q.v., but CODING-SYSTEM the first arg will |
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177 | be applied to `file-coding-system-for-read'." |
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178 | (let ((file-coding-system-for-read coding-system)) |
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179 | (insert-file-contents filename visit))))) |
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180 | |
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181 | (cond |
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182 | ((and (>= emacs-major-version 19) (>= emacs-minor-version 29)) |
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183 | ;; for MULE 2.3 based on Emacs 19.34. |
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184 | (defun write-region-as-coding-system |
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185 | (coding-system start end filename &optional append visit lockname) |
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186 | "Like `write-region', q.v., but CODING-SYSTEM the first arg will be |
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187 | applied to `file-coding-system'." |
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188 | (let ((file-coding-system coding-system) |
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189 | jka-compr-compression-info-list jam-zcat-filename-list) |
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190 | (write-region start end filename append visit lockname))) |
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191 | |
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192 | (defun find-file-noselect-as-coding-system |
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193 | (coding-system filename &optional nowarn rawfile) |
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194 | "Like `find-file-noselect', q.v., but CODING-SYSTEM the first arg will |
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195 | be applied to `file-coding-system-for-read'." |
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196 | (let ((file-coding-system-for-read coding-system)) |
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197 | (find-file-noselect filename nowarn rawfile))) |
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198 | ) |
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199 | (t |
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200 | ;; for MULE 2.3 based on Emacs 19.28 or MULE 1.*. |
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201 | (defun write-region-as-coding-system |
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202 | (coding-system start end filename &optional append visit lockname) |
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203 | "Like `write-region', q.v., but CODING-SYSTEM the first arg will be |
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204 | applied to `file-coding-system'." |
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205 | (let ((file-coding-system coding-system) |
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206 | jka-compr-compression-info-list jam-zcat-filename-list) |
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207 | (write-region start end filename append visit))) |
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208 | |
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209 | (defun find-file-noselect-as-coding-system |
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210 | (coding-system filename &optional nowarn rawfile) |
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211 | "Like `find-file-noselect', q.v., but CODING-SYSTEM the first arg will |
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212 | be applied to `file-coding-system-for-read'." |
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213 | (let ((file-coding-system-for-read coding-system)) |
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214 | (find-file-noselect filename nowarn))) |
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215 | )) |
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216 | |
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217 | (defun save-buffer-as-coding-system (coding-system &optional args) |
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218 | "Like `save-buffer', q.v., but CODING-SYSTEM the first arg will be |
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219 | applied to `coding-system-for-write'." |
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220 | (let ((file-coding-system coding-system)) |
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221 | (save-buffer args))) |
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222 | |
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223 | |
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224 | ;;; @ without code-conversion |
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225 | ;;; |
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226 | |
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227 | (make-coding-system 'binary nil ?= "No conversion") |
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228 | |
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229 | (defmacro as-binary-process (&rest body) |
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230 | (` (let (selective-display ; Disable ^M to nl translation. |
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231 | ;; Mule |
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232 | mc-flag |
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233 | (default-process-coding-system (cons *noconv* *noconv*)) |
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234 | program-coding-system-alist) |
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235 | (,@ body)))) |
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236 | |
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237 | (defmacro as-binary-input-file (&rest body) |
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238 | (` (let (mc-flag |
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239 | (file-coding-system-for-read *noconv*) |
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240 | ) |
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241 | (,@ body)))) |
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242 | |
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243 | (defmacro as-binary-output-file (&rest body) |
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244 | (` (let (mc-flag |
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245 | (file-coding-system *noconv*) |
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246 | ) |
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247 | (,@ body)))) |
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248 | |
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249 | (defalias 'set-process-input-coding-system 'set-process-coding-system) |
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250 | |
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251 | (cond |
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252 | ((and (>= emacs-major-version 19) (>= emacs-minor-version 23)) |
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253 | ;; Mule 2.0 or later. |
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254 | (defun insert-file-contents-as-binary (filename |
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255 | &optional visit beg end replace) |
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256 | "Like `insert-file-contents', q.v., but don't code and format conversion. |
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257 | Like `insert-file-contents-literary', but it allows find-file-hooks, |
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258 | automatic uncompression, etc. |
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259 | |
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260 | Namely this function ensures that only format decoding and character |
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261 | code conversion will not take place." |
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262 | (as-binary-input-file |
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263 | ;; Returns list absolute file name and length of data inserted. |
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264 | (insert-file-contents filename visit beg end replace)))) |
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265 | (t |
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266 | ;; Mule 1.1 or earlier. |
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267 | (defun insert-file-contents-as-binary (filename |
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268 | &optional visit beg end replace) |
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269 | "Like `insert-file-contents', q.v., but don't code and format conversion. |
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270 | Like `insert-file-contents-literary', but it allows find-file-hooks, |
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271 | automatic uncompression, etc. |
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272 | |
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273 | Namely this function ensures that only format decoding and character |
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274 | code conversion will not take place." |
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275 | (as-binary-input-file |
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276 | ;; Returns list absolute file name and length of data inserted. |
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277 | (insert-file-contents filename visit))))) |
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278 | |
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279 | (defun insert-file-contents-as-raw-text (filename |
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280 | &optional visit beg end replace) |
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281 | "Like `insert-file-contents', q.v., but don't code and format conversion. |
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282 | Like `insert-file-contents-literary', but it allows find-file-hooks, |
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283 | automatic uncompression, etc. |
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284 | Like `insert-file-contents-as-binary', but it converts line-break |
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285 | code." |
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286 | ;; Returns list absolute file name and length of data inserted. |
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287 | (insert-file-contents-as-coding-system 'raw-text |
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288 | filename visit beg end replace)) |
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289 | |
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290 | (defalias 'insert-file-contents-as-raw-text-CRLF |
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291 | 'insert-file-contents-as-raw-text) |
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292 | |
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293 | (defun write-region-as-binary (start end filename |
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294 | &optional append visit lockname) |
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295 | "Like `write-region', q.v., but don't code conversion." |
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296 | (write-region-as-coding-system 'binary |
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297 | start end filename append visit lockname)) |
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298 | |
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299 | (defun write-region-as-raw-text-CRLF (start end filename |
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300 | &optional append visit lockname) |
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301 | "Like `write-region', q.v., but don't code conversion." |
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302 | (write-region-as-coding-system 'raw-text-dos |
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303 | start end filename append visit lockname)) |
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304 | |
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305 | (defun find-file-noselect-as-binary (filename &optional nowarn rawfile) |
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306 | "Like `find-file-noselect', q.v., but don't code and format conversion." |
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307 | (find-file-noselect-as-coding-system 'binary filename nowarn rawfile)) |
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308 | |
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309 | (defun find-file-noselect-as-raw-text (filename &optional nowarn rawfile) |
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310 | "Like `find-file-noselect', q.v., but it does not code and format |
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311 | conversion except for line-break code." |
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312 | (find-file-noselect-as-coding-system 'raw-text filename nowarn rawfile)) |
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313 | |
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314 | (defalias 'find-file-noselect-as-raw-text-CRLF |
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315 | 'find-file-noselect-as-raw-text) |
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316 | |
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317 | (defun save-buffer-as-binary (&optional args) |
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318 | "Like `save-buffer', q.v., but don't encode." |
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319 | (let ((file-coding-system 'binary)) |
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320 | (save-buffer args))) |
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321 | |
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322 | (defun save-buffer-as-raw-text-CRLF (&optional args) |
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323 | "Like `save-buffer', q.v., but save as network representation." |
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324 | (let ((file-coding-system 'raw-text-dos)) |
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325 | (save-buffer args))) |
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326 | |
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327 | (defun open-network-stream-as-binary (name buffer host service) |
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328 | "Like `open-network-stream', q.v., but don't code conversion." |
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329 | (let ((process (open-network-stream name buffer host service))) |
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330 | (set-process-coding-system process *noconv* *noconv*) |
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331 | process)) |
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332 | |
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333 | |
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334 | ;;; @ end |
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335 | ;;; |
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336 | |
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337 | (require 'product) |
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338 | (product-provide (provide 'pces-om) (require 'apel-ver)) |
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339 | |
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340 | ;;; pces-om.el ends here |
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