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;;; mcs-xm.el --- MIME charset implementation for XEmacs-mule
;; Copyright (C) 1997,1998,1999,2000,2002,2010 Free Software Foundation, Inc.
;; Author: MORIOKA Tomohiko <tomo@m17n.org>
;; Keywords: MIME-charset, coding-system, emulation, compatibility, Mule
;; This file is part of APEL (A Portable Emacs 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 GNU Emacs; see the file COPYING. If not, write to the
;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
;; Boston, MA 02110-1301, USA.
;;; Commentary:
;; This module requires Emacs 20.0.93, XEmacs 20.3-b5 (with mule)
;; or later.
;;; Code:
(require 'poem)
(defun encode-mime-charset-region (start end charset &optional lbt)
"Encode the text between START and END as MIME CHARSET."
(let ((cs (mime-charset-to-coding-system charset lbt)))
(if cs
(encode-coding-region start end cs)
)))
(defcustom mime-charset-decoder-alist
(let ((alist
'((hz-gb-2312 . decode-mime-charset-region-for-hz)
(t . decode-mime-charset-region-default))))
(if (featurep 'utf-2000)
alist
(list*
'(iso-2022-jp . decode-mime-charset-region-with-iso646-unification)
'(iso-2022-jp-2 . decode-mime-charset-region-with-iso646-unification)
alist)))
"Alist MIME-charset vs. decoder function."
:group 'i18n
:type '(repeat (cons mime-charset function)))
(defsubst decode-mime-charset-region-default (start end charset lbt)
(let ((cs (mime-charset-to-coding-system charset lbt)))
(if cs
(decode-coding-region start end cs)
)))
(unless (featurep 'utf-2000)
(require 'mcs-xmu))
(defun decode-mime-charset-region-for-hz (start end charset lbt)
(if lbt
(save-restriction
(narrow-to-region start end)
(decode-coding-region (point-min)(point-max)
(mime-charset-to-coding-system 'raw-text lbt))
(decode-hz-region (point-min)(point-max)))
(decode-hz-region start end)))
(defun decode-mime-charset-region (start end charset &optional lbt)
"Decode the text between START and END as MIME CHARSET."
(if (stringp charset)
(setq charset (intern (downcase charset)))
)
(let ((func (cdr (or (assq charset mime-charset-decoder-alist)
(assq t mime-charset-decoder-alist)))))
(funcall func start end charset lbt)))
(defun encode-mime-charset-string (string charset &optional lbt)
"Encode the STRING as MIME CHARSET."
(let ((cs (mime-charset-to-coding-system charset lbt)))
(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)))
(defun decode-mime-charset-string (string charset &optional lbt)
"Decode the STRING as MIME CHARSET."
(with-temp-buffer
(insert string)
(decode-mime-charset-region (point-min)(point-max) charset lbt)
(buffer-string)))
(defvar charsets-mime-charset-alist
(delq
nil
`(((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)
,(if (find-coding-system 'iso-8859-15)
'((ascii latin-iso8859-15) . iso-8859-15))
((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)
((ascii latin-iso8859-9) . iso-8859-9)
,(if (find-coding-system 'iso-8859-14)
'((ascii latin-iso8859-14) . iso-8859-14))
;; ,(if (featurep 'utf-2000)
;; '((ascii latin-jisx0201
;; japanese-jisx0208-1978
;; japanese-jisx0208
;; japanese-jisx0208-1990) . iso-2022-jp)
;; '((ascii latin-jisx0201
;; japanese-jisx0208-1978 japanese-jisx0208)
;; . iso-2022-jp))
((ascii latin-jisx0201
japanese-jisx0208-1978 japanese-jisx0208) . iso-2022-jp)
;; ,(if (featurep 'utf-2000)
;; '((ascii latin-jisx0201
;; japanese-jisx0208-1978
;; japanese-jisx0208
;; japanese-jisx0208-1990
;; japanese-jisx0213-1
;; japanese-jisx0213-2) . iso-2022-jp-3)
;; '((ascii latin-jisx0201
;; japanese-jisx0208-1978 japanese-jisx0208
;; japanese-jisx0213-1
;; japanese-jisx0213-2) . iso-2022-jp-3))
,(if (featurep 'utf-2000)
'((ascii latin-jisx0201 katakana-jisx0201
japanese-jisx0208-1990) . utf-8)
'((ascii latin-jisx0201
katakana-jisx0201 japanese-jisx0208) . shift_jis))
((ascii korean-ksc5601) . euc-kr)
((ascii chinese-gb2312) . gb2312)
((ascii chinese-big5-1 chinese-big5-2) . big5)
((ascii thai-xtis) . tis-620)
;; ,(if (featurep 'utf-2000)
;; '((ascii latin-jisx0201 latin-iso8859-1
;; greek-iso8859-7
;; japanese-jisx0208-1978 japanese-jisx0208
;; japanese-jisx0208-1990
;; japanese-jisx0212
;; chinese-gb2312
;; korean-ksc5601) . iso-2022-jp-2)
;; '((ascii latin-jisx0201 latin-iso8859-1
;; greek-iso8859-7
;; japanese-jisx0208-1978 japanese-jisx0208
;; japanese-jisx0212
;; chinese-gb2312
;; korean-ksc5601) . iso-2022-jp-2))
;;((ascii latin-iso8859-1 greek-iso8859-7
;; latin-jisx0201 japanese-jisx0208-1978
;; chinese-gb2312 japanese-jisx0208
;; korean-ksc5601 japanese-jisx0212
;; chinese-cns11643-1 chinese-cns11643-2) . iso-2022-int-1)
)))
(defun coding-system-to-mime-charset (coding-system)
"Convert CODING-SYSTEM to a MIME-charset.
Return nil if corresponding MIME-charset is not found."
(setq coding-system
(coding-system-name (coding-system-base coding-system)))
(or (car (rassq coding-system mime-charset-coding-system-alist))
coding-system))
(defun mime-charset-list ()
"Return a list of all existing MIME-charset."
(let ((dest (mapcar (function car) mime-charset-coding-system-alist))
(rest (coding-system-list))
cs)
(while rest
(setq cs (coding-system-name (coding-system-base (car rest))))
(unless (memq cs dest)
(setq dest (cons cs dest)))
(setq rest (cdr rest)))
dest))
;;; @ end
;;;
(require 'product)
(product-provide (provide 'mcs-xm) (require 'apel-ver))
;;; mcs-xm.el ends here
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