131 lines
3.8 KiB
EmacsLisp
131 lines
3.8 KiB
EmacsLisp
;;; mcs-nemacs.el --- MIME charset implementation for Nemacs
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;; Copyright (C) 1995,1996,1997,1998,2000 Free Software Foundation, Inc.
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;; Author: MORIOKA Tomohiko <tomo@m17n.org>
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;; Keywords: 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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;;; Code:
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(defvar charsets-mime-charset-alist
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'(((ascii) . us-ascii)))
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(defvar default-mime-charset 'iso-2022-jp)
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(defvar mime-charset-coding-system-alist
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'((iso-2022-jp . 2)
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(shift_jis . 1)
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))
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(defsubst lbt-to-string (lbt)
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(cdr (assq lbt '((nil . nil)
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(CRLF . "\r\n")
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(CR . "\r")
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(dos . "\r\n")
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(mac . "\r"))))
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)
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(defun mime-charset-to-coding-system (charset &optional lbt)
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(if (stringp charset)
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(setq charset (intern (downcase charset)))
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)
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(cdr (assq charset mime-charset-coding-system-alist)))
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(fset 'mime-charset-p 'mime-charset-to-coding-system)
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(defun detect-mime-charset-region (start end)
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"Return MIME charset for region between START and END.
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\[emu-nemacs.el]"
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(if (save-excursion
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(save-restriction
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(narrow-to-region start end)
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(goto-char start)
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(re-search-forward "[\200-\377]" nil t)))
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default-mime-charset
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'us-ascii))
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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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\[emu-nemacs.el]"
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(let ((cs (mime-charset-to-coding-system charset))
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(nl (lbt-to-string lbt)))
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(and (numberp cs)
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(or (= cs 3)
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(save-excursion
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(save-restriction
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(narrow-to-region start end)
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(convert-region-kanji-code start end 3 cs)
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(if nl
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(progn
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(goto-char (point-min))
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(while (search-forward "\n" nil t)
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(replace-match nl)))
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)))
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))))
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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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\[emu-nemacs.el]"
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(let ((cs (mime-charset-to-coding-system charset))
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(nl (lbt-to-string lbt)))
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(and (numberp cs)
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(or (= cs 3)
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(save-excursion
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(save-restriction
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(narrow-to-region start end)
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(convert-region-kanji-code start end cs 3)
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(if nl
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(progn
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(goto-char (point-min))
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(while (search-forward nl nil t)
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(replace-match "\n")))
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)))
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))))
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(defun encode-mime-charset-string (string charset &optional lbt)
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"Encode the STRING as MIME CHARSET. [emu-nemacs.el]"
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(with-temp-buffer
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(insert string)
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(encode-mime-charset-region (point-min)(point-max) charset lbt)
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(buffer-string)))
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(defun decode-mime-charset-string (string charset &optional lbt)
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"Decode the STRING as MIME CHARSET. [emu-nemacs.el]"
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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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(defun write-region-as-mime-charset (charset start end filename)
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"Like `write-region', q.v., but code-convert by MIME CHARSET.
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\[emu-nemacs.el]"
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(let ((kanji-fileio-code
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(or (mime-charset-to-coding-system charset) 0)))
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(write-region start end filename)))
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;;; @ end
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;;;
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(require 'product)
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(product-provide (provide 'mcs-nemacs) (require 'apel-ver))
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;;; mcs-nemacs.el ends here
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