1 ;;; emu-20.el --- emu API implementation for Emacs 20 and XEmacs/mule
3 ;; Copyright (C) 1997,1998 Free Software Foundation, Inc.
5 ;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
6 ;; Keywords: emulation, compatibility, Mule
8 ;; This file is part of emu.
10 ;; This program is free software; you can redistribute it and/or
11 ;; modify it under the terms of the GNU General Public License as
12 ;; published by the Free Software Foundation; either version 2, or (at
13 ;; your option) any later version.
15 ;; This program is distributed in the hope that it will be useful, but
16 ;; WITHOUT ANY WARRANTY; without even the implied warranty of
17 ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
18 ;; General Public License for more details.
20 ;; You should have received a copy of the GNU General Public License
21 ;; along with GNU Emacs; see the file COPYING. If not, write to the
22 ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
23 ;; Boston, MA 02111-1307, USA.
27 ;; This module requires Emacs 20.0.93, XEmacs 20.3-b5 (with mule)
33 (eval-when-compile (require 'wid-edit))
36 ;;; @ without code-conversion
39 (defmacro as-binary-process (&rest body)
40 `(let (selective-display ; Disable ^M to nl translation.
41 (coding-system-for-read 'binary)
42 (coding-system-for-write 'binary))
45 (defmacro as-binary-input-file (&rest body)
46 `(let ((coding-system-for-read 'binary))
49 (defmacro as-binary-output-file (&rest body)
50 `(let ((coding-system-for-write 'binary))
53 (defun write-region-as-binary (start end filename
54 &optional append visit lockname)
55 "Like `write-region', q.v., but don't encode."
56 (let ((coding-system-for-write 'binary))
57 (write-region start end filename append visit lockname)
60 (defun insert-file-contents-as-binary (filename
61 &optional visit beg end replace)
62 "Like `insert-file-contents', q.v., but don't code and format conversion.
63 Like `insert-file-contents-literary', but it allows find-file-hooks,
64 automatic uncompression, etc.
66 Namely this function ensures that only format decoding and character
67 code conversion will not take place."
68 (let ((coding-system-for-read 'binary)
70 (insert-file-contents filename visit beg end replace)
73 (defun insert-file-contents-as-raw-text (filename
74 &optional visit beg end replace)
75 "Like `insert-file-contents', q.v., but don't code and format conversion.
76 Like `insert-file-contents-literary', but it allows find-file-hooks,
77 automatic uncompression, etc.
78 Like `insert-file-contents-as-binary', but it converts line-break
80 (let ((coding-system-for-read 'raw-text)
82 (insert-file-contents filename visit beg end replace)
85 (defun write-region-as-raw-text-CRLF (start end filename
86 &optional append visit lockname)
87 "Like `write-region', q.v., but write as network representation."
88 (let ((coding-system-for-write 'raw-text-dos))
89 (write-region start end filename append visit lockname)
93 ;;; @@ Mule emulating aliases
95 ;;; You should not use it.
97 (defconst *noconv* 'binary
98 "Coding-system for binary.
99 This constant is defined to emulate old MULE anything older than MULE
100 2.3. It is obsolete, so don't use it.")
106 (defcustom mime-charset-coding-system-alist
108 '((us-ascii . raw-text)
109 (gb2312 . cn-gb-2312)
110 (iso-2022-jp-2 . iso-2022-7bit-ss2)
112 (unknown . undecided)
113 (x-unknown . undecided)
117 (let ((pair (car rest)))
118 (or (find-coding-system (car pair))
119 (setq dest (cons pair dest))
121 (setq rest (cdr rest))
124 "Alist MIME CHARSET vs CODING-SYSTEM.
125 MIME CHARSET and CODING-SYSTEM must be symbol."
127 :type '(repeat (cons symbol coding-system)))
129 (defsubst mime-charset-to-coding-system (charset &optional lbt)
130 "Return coding-system corresponding with CHARSET.
131 CHARSET is a symbol whose name is MIME charset.
132 If optional argument LBT (`CRLF', `LF', `CR', `unix', `dos' or `mac')
133 is specified, it is used as line break code type of coding-system."
134 (if (stringp charset)
135 (setq charset (intern (downcase charset)))
137 (let ((ret (assq charset mime-charset-coding-system-alist)))
139 (setq charset (cdr ret))
142 (setq charset (intern (format "%s-%s" charset
143 (cond ((eq lbt 'CRLF) 'dos)
148 (if (find-coding-system charset)
151 (defsubst mime-charset-list ()
152 "Return a list of all existing MIME-charset."
153 (nconc (mapcar (function car) mime-charset-coding-system-alist)
154 (coding-system-list)))
157 (defvar widget-mime-charset-prompt-value-history nil
158 "History of input to `widget-mime-charset-prompt-value'.")
160 (define-widget 'mime-charset 'coding-system
164 :prompt-history 'widget-mime-charset-prompt-value-history
165 :prompt-value 'widget-mime-charset-prompt-value
166 :action 'widget-mime-charset-action)
168 (defun widget-mime-charset-prompt-value (widget prompt value unbound)
169 ;; Read mime-charset from minibuffer.
171 (completing-read (format "%s (default %s) " prompt value)
174 (list (symbol-name sym))
176 (mime-charset-list)))))
178 (defun widget-mime-charset-action (widget &optional event)
179 ;; Read a mime-charset from the minibuffer.
181 (widget-mime-charset-prompt-value
183 (widget-apply widget :menu-tag-get)
184 (widget-value widget)
186 (widget-value-set widget answer)
187 (widget-apply widget :notify widget event)
190 (defcustom default-mime-charset 'x-ctext
191 "Default value of MIME-charset.
192 It is used when MIME-charset is not specified.
197 (defsubst detect-mime-charset-region (start end)
198 "Return MIME charset for region between START and END."
199 (charsets-to-mime-charset (find-charset-region start end)))
201 (defun write-region-as-mime-charset (charset start end filename
202 &optional append visit lockname)
203 "Like `write-region', q.v., but encode by MIME CHARSET."
204 (let ((coding-system-for-write
205 (or (mime-charset-to-coding-system charset)
207 (write-region start end filename append visit lockname)
216 ;;; emu-20.el ends here