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- ;;; emu-20.el --- emu API implementation for Emacs 20 and XEmacs/mule
-
- ;; Copyright (C) 1997 Free Software Foundation, Inc.
-
- ;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
- ;; Version: $Id: emu-20.el,v 7.18 1997/11/04 08:36:40 morioka Exp $
- ;; Keywords: emulation, compatibility, Mule
-
- ;; This file is part of emu.
-
- ;; This program is free software; you can redistribute it and/or
- ;; modify it under the terms of the GNU General Public License as
- ;; published by the Free Software Foundation; either version 2, or (at
- ;; your option) any later version.
-
- ;; This program is distributed in the hope that it will be useful, but
- ;; WITHOUT ANY WARRANTY; without even the implied warranty of
- ;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- ;; General Public License for more details.
-
- ;; You should have received a copy of the GNU General Public License
- ;; along with GNU Emacs; see the file COPYING. If not, write to the
- ;; Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- ;; Boston, MA 02111-1307, USA.
-
- ;;; Commentary:
-
- ;; This module requires Emacs 20.0.93, XEmacs 20.3-b5 (with mule)
- ;; or later.
-
- ;;; Code:
-
- (require 'custom)
-
-
- ;;; @ binary access
- ;;;
-
- (defmacro as-binary-process (&rest body)
- `(let (selective-display ; Disable ^M to nl translation.
- (coding-system-for-read 'binary)
- (coding-system-for-write 'binary))
- ,@body))
-
- (defmacro as-binary-input-file (&rest body)
- `(let ((coding-system-for-read 'binary))
- ,@body))
-
- (defmacro as-binary-output-file (&rest body)
- `(let ((coding-system-for-write 'binary))
- ,@body))
-
- (defun insert-binary-file-contents-literally
- (filename &optional visit beg end replace)
- "Like `insert-file-contents-literally', q.v., but don't code conversion.
- A buffer may be modified in several ways after reading into the buffer due
- to advanced Emacs features, such as file-name-handlers, format decoding,
- find-file-hooks, etc.
- This function ensures that none of these modifications will take place."
- (let ((coding-system-for-read 'binary))
- (insert-file-contents-literally filename visit beg end replace)
- ))
-
- ;;; @@ Mule emulating aliases
- ;;;
- ;;; You should not use it.
-
- (defconst *noconv* 'binary
- "Coding-system for binary.
- This constant is defined to emulate old MULE anything older than MULE
- 2.3. It is obsolete, so don't use it.")
-
-
- ;;; @ MIME charset
- ;;;
-
- (defvar mime-charset-coding-system-alist
- `,(let ((rest
- '((us-ascii . iso-8859-1)
- (gb2312 . cn-gb-2312)
- (iso-2022-jp-2 . iso-2022-7bit-ss2)
- (x-ctext . ctext)
- ))
- dest)
- (while rest
- (let ((pair (car rest)))
- (or (find-coding-system (car pair))
- (setq dest (cons pair dest))
- ))
- (setq rest (cdr rest))
- )
- dest)
- "Alist MIME CHARSET vs CODING-SYSTEM.
- MIME CHARSET and CODING-SYSTEM must be symbol.")
-
- (defun mime-charset-to-coding-system (charset &optional lbt)
- "Return coding-system corresponding with CHARSET.
- CHARSET is a symbol whose name is MIME charset.
- If optional argument LBT (`unix', `dos' or `mac') is specified, it is
- used as line break code type of coding-system."
- (if (stringp charset)
- (setq charset (intern (downcase charset)))
- )
- (let ((ret (assq charset mime-charset-coding-system-alist)))
- (if ret
- (setq charset (cdr ret))
- ))
- (if lbt
- (setq charset (intern (format "%s-%s" charset lbt)))
- )
- (if (find-coding-system charset)
- charset))
-
- (defun mime-charset-list ()
- "Return a list of all existing MIME-charset."
- (nconc (mapcar (function car) mime-charset-coding-system-alist)
- (coding-system-list)))
-
-
- (defvar widget-mime-charset-prompt-value-history nil
- "History of input to `widget-mime-charset-prompt-value'.")
-
- (define-widget 'mime-charset 'coding-system
- "A mime-charset."
- :format "%{%t%}: %v"
- :tag "MIME-charset"
- :prompt-history 'widget-mime-charset-prompt-value-history
- :prompt-value 'widget-mime-charset-prompt-value
- :action 'widget-mime-charset-action)
-
- (defun widget-mime-charset-prompt-value (widget prompt value unbound)
- ;; Read mime-charset from minibuffer.
- (intern
- (completing-read (format "%s (default %s) " prompt value)
- (mapcar (function
- (lambda (sym)
- (list (symbol-name sym))
- ))
- (mime-charset-list)))))
-
- (defun widget-mime-charset-action (widget &optional event)
- ;; Read a mime-charset from the minibuffer.
- (let ((answer
- (widget-mime-charset-prompt-value
- widget
- (widget-apply widget :menu-tag-get)
- (widget-value widget)
- t)))
- (widget-value-set widget answer)
- (widget-apply widget :notify widget event)
- (widget-setup)))
-
- (defcustom default-mime-charset 'x-ctext
- "Default value of MIME-charset.
- It is used when MIME-charset is not specified.
- It must be symbol."
- :group 'i18n
- :type 'mime-charset)
-
- (defun detect-mime-charset-region (start end)
- "Return MIME charset for region between START and END."
- (charsets-to-mime-charset (find-charset-region start end)))
-
-
- ;;; @ end
- ;;;
-
- (provide 'emu-20)
-
- ;;; emu-20.el ends here
-