--- /dev/null
+;;; mcs-om.el --- MIME charset implementation for Mule 1.* and Mule 2.*
+
+;; Copyright (C) 1995,1996,1997,1998 MORIOKA Tomohiko
+
+;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
+;; Keywords: 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., 59 Temple Place - Suite 330,
+;; Boston, MA 02111-1307, USA.
+
+;;; Code:
+
+(require 'poem)
+
+(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
+ (code-convert start end *internal* cs)
+ )))
+
+(defun decode-mime-charset-region (start end charset &optional lbt)
+ "Decode the text between START and END as MIME CHARSET."
+ (let ((cs (mime-charset-to-coding-system charset lbt))
+ newline)
+ (if cs
+ (code-convert start end cs *internal*)
+ (if (and lbt (setq cs (mime-charset-to-coding-system charset)))
+ (progn
+ (if (setq newline (cdr (assq lbt '((CRLF . "\r\n") (CR . "\r")))))
+ (save-excursion
+ (save-restriction
+ (narrow-to-region start end)
+ (goto-char (point-min))
+ (while (search-forward newline nil t)
+ (replace-match "\n")))
+ (code-convert (point-min) (point-max) cs *internal*))
+ (code-convert start end cs *internal*)))))))
+
+(defun encode-mime-charset-string (string charset)
+ "Encode the STRING as MIME CHARSET."
+ (let ((cs (mime-charset-to-coding-system charset)))
+ (if cs
+ (code-convert-string string *internal* cs)
+ string)))
+
+(defun decode-mime-charset-string (string charset &optional lbt)
+ "Decode the STRING which is encoded in MIME CHARSET."
+ (let ((cs (mime-charset-to-coding-system charset lbt))
+ newline)
+ (if cs
+ (decode-coding-string string cs)
+ (if (and lbt (setq cs (mime-charset-to-coding-system charset)))
+ (progn
+ (if (setq newline (cdr (assq lbt '((CRLF . "\r\n") (CR . "\r")))))
+ (with-temp-buffer
+ (insert string)
+ (goto-char (point-min))
+ (while (search-forward newline nil t)
+ (replace-match "\n"))
+ (code-convert (point-min) (point-max) cs *internal*)
+ (buffer-string))
+ (decode-coding-string string cs)))
+ string))))
+
+(cond
+ (running-emacs-19_29-or-later
+ ;; for MULE 2.3 based on Emacs 19.34.
+ (defun write-region-as-mime-charset (charset start end filename
+ &optional append visit lockname)
+ "Like `write-region', q.v., but code-convert by MIME CHARSET."
+ (let ((file-coding-system
+ (or (mime-charset-to-coding-system charset)
+ *noconv*)))
+ (write-region start end filename append visit lockname)))
+ )
+ (t
+ ;; for MULE 2.3 based on Emacs 19.28.
+ (defun write-region-as-mime-charset (charset start end filename
+ &optional append visit lockname)
+ "Like `write-region', q.v., but code-convert by MIME CHARSET."
+ (let ((file-coding-system
+ (or (mime-charset-to-coding-system charset)
+ *noconv*)))
+ (write-region start end filename append visit)))
+ ))
+
+
+;;; @ to coding-system
+;;;
+
+(require 'cyrillic)
+
+(defvar mime-charset-coding-system-alist
+ '((iso-8859-1 . *ctext*)
+ (x-ctext . *ctext*)
+ (gb2312 . *euc-china*)
+ (koi8-r . *koi8*)
+ (iso-2022-jp-2 . *iso-2022-ss2-7*)
+ (x-iso-2022-jp-2 . *iso-2022-ss2-7*)
+ (shift_jis . *sjis*)
+ (x-shiftjis . *sjis*)
+ ))
+
+(defsubst mime-charset-to-coding-system (charset &optional lbt)
+ (if (stringp charset)
+ (setq charset (intern (downcase charset)))
+ )
+ (setq charset (or (cdr (assq charset mime-charset-coding-system-alist))
+ (intern (concat "*" (symbol-name charset) "*"))))
+ (if lbt
+ (setq charset (intern (format "%s%s" charset
+ (cond ((eq lbt 'CRLF) 'dos)
+ ((eq lbt 'LF) 'unix)
+ ((eq lbt 'CR) 'mac)
+ (t lbt)))))
+ )
+ (if (coding-system-p charset)
+ charset
+ ))
+
+
+;;; @ detection
+;;;
+
+(defvar charsets-mime-charset-alist
+ (let ((alist
+ '(((lc-ascii) . us-ascii)
+ ((lc-ascii lc-ltn1) . iso-8859-1)
+ ((lc-ascii lc-ltn2) . iso-8859-2)
+ ((lc-ascii lc-ltn3) . iso-8859-3)
+ ((lc-ascii lc-ltn4) . iso-8859-4)
+;;; ((lc-ascii lc-crl) . iso-8859-5)
+ ((lc-ascii lc-crl) . koi8-r)
+ ((lc-ascii lc-arb) . iso-8859-6)
+ ((lc-ascii lc-grk) . iso-8859-7)
+ ((lc-ascii lc-hbw) . iso-8859-8)
+ ((lc-ascii lc-ltn5) . iso-8859-9)
+ ((lc-ascii lc-roman lc-jpold lc-jp) . iso-2022-jp)
+ ((lc-ascii lc-kr) . euc-kr)
+ ((lc-ascii lc-cn) . gb2312)
+ ((lc-ascii lc-big5-1 lc-big5-2) . big5)
+ ((lc-ascii lc-roman lc-ltn1 lc-grk
+ lc-jpold lc-cn lc-jp lc-kr
+ lc-jp2) . iso-2022-jp-2)
+ ((lc-ascii lc-roman lc-ltn1 lc-grk
+ lc-jpold lc-cn lc-jp lc-kr lc-jp2
+ lc-cns1 lc-cns2) . iso-2022-int-1)
+ ((lc-ascii lc-roman
+ lc-ltn1 lc-ltn2 lc-crl lc-grk
+ lc-jpold lc-cn lc-jp lc-kr lc-jp2
+ lc-cns1 lc-cns2 lc-cns3 lc-cns4
+ lc-cns5 lc-cns6 lc-cns7) . iso-2022-int-1)
+ ))
+ dest)
+ (while alist
+ (catch 'not-found
+ (let ((pair (car alist)))
+ (setq dest
+ (append dest
+ (list
+ (cons (mapcar (function
+ (lambda (cs)
+ (if (boundp cs)
+ (symbol-value cs)
+ (throw 'not-found nil)
+ )))
+ (car pair))
+ (cdr pair)))))))
+ (setq alist (cdr alist)))
+ dest))
+
+(defvar default-mime-charset 'x-ctext
+ "Default value of MIME-charset.
+It is used when MIME-charset is not specified.
+It must be symbol.")
+
+(defun detect-mime-charset-region (start end)
+ "Return MIME charset for region between START and END."
+ (charsets-to-mime-charset
+ (cons lc-ascii (find-charset-region start end))))
+
+
+;;; @ end
+;;;
+
+(provide 'mcs-om)
+
+;;; mcs-om.el ends here
projects / elisp / apel.git / blobdiff