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)))
59 (defun insert-file-contents-as-binary (filename
60 &optional visit beg end replace)
61 "Like `insert-file-contents', q.v., but don't code and format conversion.
62 Like `insert-file-contents-literary', but it allows find-file-hooks,
63 automatic uncompression, etc.
65 Namely this function ensures that only format decoding and character
66 code conversion will not take place."
67 (let ((coding-system-for-read 'binary)
69 ;; Returns list of absolute file name and length of data inserted.
70 (insert-file-contents filename visit beg end replace)))
72 (defun insert-file-contents-as-raw-text (filename
73 &optional visit beg end replace)
74 "Like `insert-file-contents', q.v., but don't code and format conversion.
75 Like `insert-file-contents-literary', but it allows find-file-hooks,
76 automatic uncompression, etc.
77 Like `insert-file-contents-as-binary', but it converts line-break
79 (let ((coding-system-for-read 'raw-text)
81 ;; Returns list of absolute file name and length of data inserted.
82 (insert-file-contents filename visit beg end replace)))
84 (defun write-region-as-raw-text-CRLF (start end filename
85 &optional append visit lockname)
86 "Like `write-region', q.v., but write as network representation."
87 (let ((coding-system-for-write 'raw-text-dos))
88 (write-region start end filename append visit lockname)))
91 ;;; @@ Mule emulating aliases
93 ;;; You should not use it.
95 (defconst *noconv* 'binary
96 "Coding-system for binary.
97 This constant is defined to emulate old MULE anything older than MULE
98 2.3. It is obsolete, so don't use it.")
104 (defcustom mime-charset-coding-system-alist
106 '((us-ascii . raw-text)
107 (gb2312 . cn-gb-2312)
108 (iso-2022-jp-2 . iso-2022-7bit-ss2)
110 (unknown . undecided)
111 (x-unknown . undecided)
115 (let ((pair (car rest)))
116 (or (find-coding-system (car pair))
117 (setq dest (cons pair dest))
119 (setq rest (cdr rest))
122 "Alist MIME CHARSET vs CODING-SYSTEM.
123 MIME CHARSET and CODING-SYSTEM must be symbol."
125 :type '(repeat (cons symbol coding-system)))
127 (defsubst mime-charset-to-coding-system (charset &optional lbt)
128 "Return coding-system corresponding with CHARSET.
129 CHARSET is a symbol whose name is MIME charset.
130 If optional argument LBT (`CRLF', `LF', `CR', `unix', `dos' or `mac')
131 is specified, it is used as line break code type of coding-system."
132 (if (stringp charset)
133 (setq charset (intern (downcase charset)))
135 (let ((ret (assq charset mime-charset-coding-system-alist)))
137 (setq charset (cdr ret))
140 (setq charset (intern (format "%s-%s" charset
141 (cond ((eq lbt 'CRLF) 'dos)
146 (if (find-coding-system charset)
150 (defsubst mime-charset-list ()
151 "Return a list of all existing MIME-charset."
152 (nconc (mapcar (function car) mime-charset-coding-system-alist)
153 (coding-system-list)))
156 (defvar widget-mime-charset-prompt-value-history nil
157 "History of input to `widget-mime-charset-prompt-value'.")
159 (define-widget 'mime-charset 'coding-system
163 :prompt-history 'widget-mime-charset-prompt-value-history
164 :prompt-value 'widget-mime-charset-prompt-value
165 :action 'widget-mime-charset-action)
167 (defun widget-mime-charset-prompt-value (widget prompt value unbound)
168 ;; Read mime-charset from minibuffer.
170 (completing-read (format "%s (default %s) " prompt value)
173 (list (symbol-name sym))))
174 (mime-charset-list)))))
176 (defun widget-mime-charset-action (widget &optional event)
177 ;; Read a mime-charset from the minibuffer.
179 (widget-mime-charset-prompt-value
181 (widget-apply widget :menu-tag-get)
182 (widget-value widget)
184 (widget-value-set widget answer)
185 (widget-apply widget :notify widget event)
188 (defcustom default-mime-charset 'x-ctext
189 "Default value of MIME-charset.
190 It is used when MIME-charset is not specified.
195 (defsubst detect-mime-charset-region (start end)
196 "Return MIME charset for region between START and END."
197 (charsets-to-mime-charset (find-charset-region start end)))
199 (defun write-region-as-mime-charset (charset start end filename
200 &optional append visit lockname)
201 "Like `write-region', q.v., but encode by MIME CHARSET."
202 (let ((coding-system-for-write
203 (or (mime-charset-to-coding-system charset)
205 (write-region start end filename append visit lockname)))
213 ;;; emu-20.el ends here