Don't require 'emu-xemacs or 'emu-e19.

[elisp/apel.git] / emu-x20.el

diff --git a/emu-x20.el b/emu-x20.el
index ba3240a..c893038 100644 (file)
--- a/emu-x20.el
+++ b/emu-x20.el
@@ -1,27 +1,26 @@
-;;; emu-x20.el --- emu API implementation for XEmacs 20 with mule
+;;; emu-x20.el --- emu API implementation for XEmacs with mule
 
-;; Copyright (C) 1994,1995,1996,1997 MORIOKA Tomohiko
+;; Copyright (C) 1994,1995,1996,1997,1998 MORIOKA Tomohiko
 
 ;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
-;; Version: $Id: emu-x20.el,v 7.66 1997/08/30 07:09:21 morioka Exp $
 ;; Keywords: emulation, compatibility, Mule, XEmacs
 
-;; This file is part of XEmacs.
+;; This file is part of emu.
 
-;; XEmacs 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 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.
 
-;; XEmacs is distributed in the hope that it will be useful, but
+;; 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 XEmacs; see the file COPYING.  If not, write to the Free
-;; Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
-;; 02111-1307, USA.
+;; 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:
 
@@ -33,17 +32,81 @@
 (require 'emu-20)
 
 
+(and (coding-system-property 'iso-2022-jp 'input-charset-conversion)
+     (copy-coding-system 'iso-2022-7bit 'iso-2022-jp))
+
+
+;;; @ binary access
+;;;
+
+(defun insert-file-contents-as-binary (filename
+                                      &optional visit beg end replace)
+  "Like `insert-file-contents', q.v., but don't code and format conversion.
+Like `insert-file-contents-literary', but it allows find-file-hooks,
+automatic uncompression, etc.
+
+Namely this function ensures that only format decoding and character
+code conversion will not take place."
+  (let ((coding-system-for-read 'binary)
+       format-alist)
+    (insert-file-contents filename visit beg end replace)
+    ))
+
+(define-obsolete-function-alias 'insert-binary-file-contents
+  'insert-file-contents-as-binary)
+
+(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)
+    ))
+
+    
 ;;; @ MIME charset
 ;;;
 
+(defun encode-mime-charset-region (start end charset)
+  "Encode the text between START and END as MIME CHARSET."
+  (let ((cs (mime-charset-to-coding-system charset)))
+    (if cs
+       (encode-coding-region start end cs)
+      )))
+
+(defun decode-mime-charset-region (start end charset)
+  "Decode the text between START and END as MIME CHARSET."
+  (let ((cs (mime-charset-to-coding-system charset)))
+    (if cs
+       (decode-coding-region start end cs)
+      )))
+
+(defsubst encode-mime-charset-string (string charset)
+  "Encode the STRING as MIME CHARSET."
+  (let ((cs (mime-charset-to-coding-system charset)))
+    (if cs
+       (encode-coding-string string cs)
+      string)))
+
+(defsubst decode-mime-charset-string (string charset)
+  "Decode the STRING as MIME CHARSET."
+  (let ((cs (mime-charset-to-coding-system charset)))
+    (if cs
+       (decode-coding-string string cs)
+      string)))
+
+
 (defvar charsets-mime-charset-alist
   '(((ascii)                                           . us-ascii)
     ((ascii latin-iso8859-1)                           . iso-8859-1)
     ((ascii latin-iso8859-2)                           . iso-8859-2)
     ((ascii latin-iso8859-3)                           . iso-8859-3)
     ((ascii latin-iso8859-4)                           . iso-8859-4)
-;;; ((ascii cyrillic-iso8859-5)                                . iso-8859-5)
-    ((ascii cyrillic-iso8859-5)                                . koi8-r)
+    ((ascii cyrillic-iso8859-5)                                . iso-8859-5)
+;;; ((ascii cyrillic-iso8859-5)                                . koi8-r)
     ((ascii arabic-iso8859-6)                          . iso-8859-6)
     ((ascii greek-iso8859-7)                           . iso-8859-7)
     ((ascii hebrew-iso8859-8)                          . iso-8859-8)
@@ -81,11 +144,15 @@
 ;;; @ character
 ;;;
 
+(defmacro char-next-index (char index)
+  "Return index of character succeeding CHAR whose index is INDEX."
+  `(1+ index))
+
 ;;; @@ Mule emulating aliases
 ;;;
 ;;; You should not use them.
 
-(defalias 'char-leading-char 'char-charset)
+;;(defalias 'char-leading-char 'char-charset)
 
 (defun char-category (character)
   "Return string of category mnemonics for CHAR in TABLE.