202 lines
6.6 KiB
EmacsLisp
202 lines
6.6 KiB
EmacsLisp
;;; mcs-xm.el --- MIME charset implementation for XEmacs-mule
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;; Copyright (C) 1997,1998,1999,2000 Free Software Foundation, Inc.
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;; Author: MORIOKA Tomohiko <tomo@m17n.org>
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;; Keywords: MIME-charset, coding-system, emulation, compatibility, Mule
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;; This file is part of APEL (A Portable Emacs Library).
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;; This program is free software; you can redistribute it and/or
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;; modify it under the terms of the GNU General Public License as
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;; published by the Free Software Foundation; either version 2, or (at
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;; your option) any later version.
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;; This program is distributed in the hope that it will be useful, but
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;; WITHOUT ANY WARRANTY; without even the implied warranty of
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;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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;; General Public License for more details.
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;; You should have received a copy of the GNU General Public License
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;; along with GNU Emacs; see the file COPYING. If not, write to the
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;; Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
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;; Boston, MA 02110-1301, USA.
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;;; Commentary:
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;; This module requires Emacs 20.0.93, XEmacs 20.3-b5 (with mule)
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;; or later.
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;;; Code:
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(require 'poem)
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(defun encode-mime-charset-region (start end charset &optional lbt)
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"Encode the text between START and END as MIME CHARSET."
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(let ((cs (mime-charset-to-coding-system charset lbt)))
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(if cs
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(encode-coding-region start end cs)
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)))
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(defcustom mime-charset-decoder-alist
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(let ((alist
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'((hz-gb-2312 . decode-mime-charset-region-for-hz)
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(t . decode-mime-charset-region-default))))
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(if (featurep 'utf-2000)
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alist
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(list*
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'(iso-2022-jp . decode-mime-charset-region-with-iso646-unification)
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'(iso-2022-jp-2 . decode-mime-charset-region-with-iso646-unification)
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alist)))
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"Alist MIME-charset vs. decoder function."
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:group 'i18n
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:type '(repeat (cons mime-charset function)))
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(defsubst decode-mime-charset-region-default (start end charset lbt)
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(let ((cs (mime-charset-to-coding-system charset lbt)))
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(if cs
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(decode-coding-region start end cs)
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)))
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(unless (featurep 'utf-2000)
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(require 'mcs-xmu))
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(defun decode-mime-charset-region-for-hz (start end charset lbt)
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(if lbt
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(save-restriction
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(narrow-to-region start end)
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(decode-coding-region (point-min)(point-max)
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(mime-charset-to-coding-system 'raw-text lbt))
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(decode-hz-region (point-min)(point-max)))
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(decode-hz-region start end)))
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(defun decode-mime-charset-region (start end charset &optional lbt)
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"Decode the text between START and END as MIME CHARSET."
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(if (stringp charset)
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(setq charset (intern (downcase charset)))
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)
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(let ((func (cdr (or (assq charset mime-charset-decoder-alist)
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(assq t mime-charset-decoder-alist)))))
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(funcall func start end charset lbt)))
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(defun encode-mime-charset-string (string charset &optional lbt)
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"Encode the STRING as MIME CHARSET."
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(let ((cs (mime-charset-to-coding-system charset lbt)))
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(if cs
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(encode-coding-string string cs)
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string)))
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;; (defsubst decode-mime-charset-string (string charset)
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;; "Decode the STRING as MIME CHARSET."
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;; (let ((cs (mime-charset-to-coding-system charset)))
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;; (if cs
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;; (decode-coding-string string cs)
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;; string)))
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(defun decode-mime-charset-string (string charset &optional lbt)
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"Decode the STRING as MIME CHARSET."
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(with-temp-buffer
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(insert string)
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(decode-mime-charset-region (point-min)(point-max) charset lbt)
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(buffer-string)))
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(defvar charsets-mime-charset-alist
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(delq
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nil
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`(((ascii) . us-ascii)
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((ascii latin-iso8859-1) . iso-8859-1)
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((ascii latin-iso8859-2) . iso-8859-2)
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((ascii latin-iso8859-3) . iso-8859-3)
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((ascii latin-iso8859-4) . iso-8859-4)
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((ascii cyrillic-iso8859-5) . iso-8859-5)
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;;((ascii cyrillic-iso8859-5) . koi8-r)
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((ascii arabic-iso8859-6) . iso-8859-6)
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((ascii greek-iso8859-7) . iso-8859-7)
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((ascii hebrew-iso8859-8) . iso-8859-8)
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((ascii latin-iso8859-9) . iso-8859-9)
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,(if (find-coding-system 'iso-8859-14)
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'((ascii latin-iso8859-14) . iso-8859-14))
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,(if (find-coding-system 'iso-8859-15)
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'((ascii latin-iso8859-15) . iso-8859-15))
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,(if (featurep 'utf-2000)
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'((ascii latin-jisx0201
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japanese-jisx0208-1978
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japanese-jisx0208
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japanese-jisx0208-1990) . iso-2022-jp)
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'((ascii latin-jisx0201
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japanese-jisx0208-1978 japanese-jisx0208)
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. iso-2022-jp))
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,(if (featurep 'utf-2000)
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'((ascii latin-jisx0201
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japanese-jisx0208-1978
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japanese-jisx0208
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japanese-jisx0208-1990
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japanese-jisx0213-1
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japanese-jisx0213-2) . iso-2022-jp-3)
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'((ascii latin-jisx0201
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japanese-jisx0208-1978 japanese-jisx0208
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japanese-jisx0213-1
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japanese-jisx0213-2) . iso-2022-jp-3))
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,(if (featurep 'utf-2000)
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'((ascii latin-jisx0201 katakana-jisx0201
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japanese-jisx0208-1990) . shift_jis)
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'((ascii latin-jisx0201
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katakana-jisx0201 japanese-jisx0208) . shift_jis))
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((ascii korean-ksc5601) . euc-kr)
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((ascii chinese-gb2312) . gb2312)
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((ascii chinese-big5-1 chinese-big5-2) . big5)
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((ascii thai-xtis) . tis-620)
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,(if (featurep 'utf-2000)
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'((ascii latin-jisx0201 latin-iso8859-1
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greek-iso8859-7
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japanese-jisx0208-1978 japanese-jisx0208
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japanese-jisx0208-1990
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japanese-jisx0212
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chinese-gb2312
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korean-ksc5601) . iso-2022-jp-2)
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'((ascii latin-jisx0201 latin-iso8859-1
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greek-iso8859-7
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japanese-jisx0208-1978 japanese-jisx0208
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japanese-jisx0212
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chinese-gb2312
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korean-ksc5601) . iso-2022-jp-2))
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;;((ascii latin-iso8859-1 greek-iso8859-7
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;; latin-jisx0201 japanese-jisx0208-1978
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;; chinese-gb2312 japanese-jisx0208
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;; korean-ksc5601 japanese-jisx0212
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;; chinese-cns11643-1 chinese-cns11643-2) . iso-2022-int-1)
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)))
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(defun coding-system-to-mime-charset (coding-system)
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"Convert CODING-SYSTEM to a MIME-charset.
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Return nil if corresponding MIME-charset is not found."
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(setq coding-system
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(coding-system-name (coding-system-base coding-system)))
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(or (car (rassq coding-system mime-charset-coding-system-alist))
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coding-system))
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(defun mime-charset-list ()
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"Return a list of all existing MIME-charset."
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(let ((dest (mapcar (function car) mime-charset-coding-system-alist))
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(rest (coding-system-list))
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cs)
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(while rest
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(setq cs (coding-system-name (coding-system-base (car rest))))
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(or (rassq cs mime-charset-coding-system-alist)
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(memq cs dest)
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(setq dest (cons cs dest)))
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(setq rest (cdr rest)))
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dest))
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;;; @ end
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;;;
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(require 'product)
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(product-provide (provide 'mcs-xm) (require 'apel-ver))
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;;; mcs-xm.el ends here
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