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emu-e19.el
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emu-e19.el
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;;; emu-e19.el --- emu module for Emacs 19 and XEmacs 19
;; Copyright (C) 1995,1996 Free Software Foundation, Inc.
;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
;; Version:
;; $Id$
;; Keywords: emulation, compatibility, mule, Latin-1
;; This file is part of tl (Tiny Library).
;; 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 this program; see the file COPYING. If not, write to
;; the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
;; Boston, MA 02111-1307, USA.
;;; Code:
;;; @ version and variant specific features
;;;
(cond (running-xemacs
(require 'emu-xemacs))
(running-emacs-19
(require 'emu-19)
))
;;; @ character set
;;;
(defconst charset-ascii 0 "Character set of ASCII")
(defconst charset-latin-1 129 "Character set of ISO-8859-1")
(defun charset-description (charset)
"Return description of CHARSET. [emu-e19.el]"
(if (< charset 128)
(documentation-property 'charset-ascii 'variable-documentation)
(documentation-property 'charset-latin-1 'variable-documentation)
))
(defun charset-registry (charset)
"Return registry name of CHARSET. [emu-e19.el]"
(if (< charset 128)
"ASCII"
"ISO8859-1"))
(defun charset-columns (charset)
"Return number of columns a CHARSET occupies when displayed.
\[emu-e19.el]"
1)
(defun charset-direction (charset)
"Return the direction of a character of CHARSET by
0 (left-to-right) or 1 (right-to-left). [emu-e19.el]"
0)
(defun find-charset-string (str)
"Return a list of charsets in the string.
\[emu-e19.el; Mule emulating function]"
(if (string-match "[\200-\377]" str)
(list lc-ltn1)
))
(defun find-charset-region (start end)
"Return a list of charsets in the region between START and END.
\[emu-e19.el; Mule emulating function]"
(if (save-excursion
(save-restriction
(narrow-to-region start end)
(goto-char start)
(re-search-forward "[\200-\377]" nil t)
))
(list lc-ltn1)
))
;;; @@ for Mule emulation
;;;
(defconst lc-ascii 0)
(defconst lc-ltn1 129)
;;; @ coding-system
;;;
(defconst *internal* nil)
(defconst *ctext* nil)
(defconst *noconv* nil)
(defun code-convert-string (str ic oc)
"Convert code in STRING from SOURCE code to TARGET code,
On successful converion, returns the result string,
else returns nil. [emu-e19.el; Mule emulating function]"
str)
(defun code-convert-region (beg end ic oc)
"Convert code of the text between BEGIN and END from SOURCE
to TARGET. On successful conversion returns t,
else returns nil. [emu-e19.el; Mule emulating function]"
t)
(defun decode-coding-string (string coding-system)
"Decode the STRING which is encoded in CODING-SYSTEM.
\[emu-e19.el]"
string)
(defun code-detect-region (beg end)
"Detect coding-system of the text in the region
between START and END. [emu-e19.el; Mule emulating function]"
)
(defun set-file-coding-system (coding-system &optional force)
)
(defmacro as-binary-process (&rest body)
(` (let (selective-display) ; Disable ^M to nl translation.
(,@ body)
)))
;;; @ MIME charset
;;;
(defvar charsets-mime-charset-alist
(list (cons (list charset-ascii) 'us-ascii)))
(defvar default-mime-charset 'iso-8859-1)
(defun mime-charset-to-coding-system (charset)
(if (stringp charset)
(setq charset (intern (downcase charset)))
)
(and (memq charset (list 'us-ascii default-mime-charset))
charset)
)
(defun detect-mime-charset-region (start end)
"Return MIME charset for region between START and END.
\[emu-e19.el]"
(if (save-excursion
(save-restriction
(narrow-to-region start end)
(goto-char start)
(re-search-forward "[\200-\377]" nil t)
))
default-mime-charset
'us-ascii))
(defun encode-mime-charset-region (start end charset)
"Encode the text between START and END as MIME CHARSET.
\[emu-e19.el]"
)
(defun decode-mime-charset-region (start end charset)
"Decode the text between START and END as MIME CHARSET.
\[emu-e19.el]"
)
(defun encode-mime-charset-string (string charset)
"Encode the STRING as MIME CHARSET. [emu-e19.el]"
string)
(defun decode-mime-charset-string (string charset)
"Decode the STRING as MIME CHARSET. [emu-e19.el]"
string)
;;; @ character
;;;
(defun char-charset (chr)
"Return the character set of char CHR.
\[emu-e19.el; XEmacs 20 emulating function]"
(if (< chr 128)
charset-ascii
charset-latin-1))
(defun char-bytes (char)
"Return number of bytes a character in CHAR occupies in a buffer.
\[emu-e19.el; Mule emulating function]"
1)
(defalias 'char-length 'char-bytes)
(defun char-columns (character)
"Return number of columns a CHARACTER occupies when displayed.
\[emu-nemacs.el]"
1)
;;; @@ for Mule emulation
;;;
(defalias 'char-width 'char-columns)
(defalias 'char-leading-char 'char-charset)
;;; @ string
;;;
(defalias 'string-columns 'length)
(defun string-to-char-list (str)
(mapcar (function identity) str)
)
(defalias 'string-to-int-list 'string-to-char-list)
(defalias 'sref 'aref)
(defun truncate-string (str width &optional start-column)
"Truncate STR to fit in WIDTH columns.
Optional non-nil arg START-COLUMN specifies the starting column.
\[emu-e19.el; Mule 2.3 emulating function]"
(or start-column
(setq start-column 0))
(substring str start-column width)
)
;;; @@ for Mule emulation
;;;
(defalias 'string-width 'length)
;;; @ end
;;;
(provide 'emu-e19)
;;; emu-e19.el ends here