;;; tm-def.el --- definition module for tm
;;;
;;; Copyright (C) 1995 Free Software Foundation, Inc.
-;;; Copyright (C) 1995 MORIOKA Tomohiko
+;;; Copyright (C) 1995,1996 MORIOKA Tomohiko
;;;
;;; Author: MORIOKA Tomohiko <morioka@jaist.ac.jp>
;;; Version:
-;;; $Id: tm-def.el,v 7.8 1995/12/23 12:43:20 morioka Exp $
+;;; $Id: tm-def.el,v 7.42 1996/05/09 18:24:39 morioka Exp $
;;; Keywords: mail, news, MIME, multimedia, definition
;;;
;;; This file is part of tm (Tools for MIME).
;;;
+;;; 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. If not, write to the Free Software
+;;; Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
+;;;
+;;; Code:
(require 'emu)
(require 'tl-822)
(defconst mime/temp-buffer-name " *MIME-temp*")
-;;; @ for various Emacs variants
+;;; @ leading-character and charset
;;;
-(cond ((boundp 'MULE) (require 'tm-mule))
- ((boundp 'NEMACS)(require 'tm-nemacs))
- (t (require 'tm-orig))
- )
+(defvar mime/lc-charset-alist
+ (foldr (function
+ (lambda (a cell)
+ (or (catch 'tag
+ (cons (cons (foldr (function
+ (lambda (a sym)
+ (if (boundp sym)
+ (cons (symbol-value sym) a)
+ (throw 'tag nil)
+ )))
+ nil
+ (car cell))
+ (cdr cell))
+ a))
+ a)
+ ))
+ nil
+ '(((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-grk) . "ISO-8859-7")
+ ((lc-ascii lc-hbw) . "ISO-8859-8")
+ ((lc-ascii lc-ltn5) . "ISO-8859-9")
+ ((lc-ascii lc-jp) . "ISO-2022-JP")
+ ((lc-ascii lc-kr) . "EUC-KR")
+ ((lc-ascii
+ lc-big5-1
+ lc-big5-2) . "BIG5")
+ ((lc-ascii
+ lc-jp lc-cn
+ lc-kr lc-jp2
+ lc-ltn1 lc-grk) . "ISO-2022-JP-2")
+ ((lc-ascii
+ lc-jp lc-cn
+ lc-kr lc-jp2
+ lc-cns1 lc-cns2
+ lc-ltn1 lc-grk) . "ISO-2022-INT-1")
+ )))
+
+(defvar mime/unknown-charset "ISO-2022-INT-1")
+
+
+;;; @ charset and encoding
+;;;
+
+(defun mime/find-charset (lcl)
+ (if lcl
+ (or (cdr (some-element
+ (function
+ (lambda (elt)
+ (subsetp lcl (car elt))
+ ))
+ mime/lc-charset-alist)
+ )
+ mime/unknown-charset)
+ ))
+
+(defun mime/find-charset-region (beg end)
+ (mime/find-charset (cons lc-ascii (find-charset-region beg end)))
+ )
+
+(defvar mime/charset-type-list
+ '(("US-ASCII" 7 nil)
+ ("ISO-8859-1" 8 "quoted-printable")
+ ("ISO-8859-2" 8 "quoted-printable")
+ ("ISO-8859-3" 8 "quoted-printable")
+ ("ISO-8859-4" 8 "quoted-printable")
+ ("ISO-8859-5" 8 "quoted-printable")
+ ("KOI8-R" 8 "quoted-printable")
+ ("ISO-8859-7" 8 "quoted-printable")
+ ("ISO-8859-8" 8 "quoted-printable")
+ ("ISO-8859-9" 8 "quoted-printable")
+ ("ISO-2022-JP" 7 "base64")
+ ("ISO-2022-KR" 7 "base64")
+ ("EUC-KR" 8 "base64")
+ ("BIG5" 8 "base64")
+ ("ISO-2022-JP-2" 7 "base64")
+ ("ISO-2022-INT-1" 7 "base64")
+ ))
+
+(defun mime/encoding-name (transfer-level &optional not-omit)
+ (cond ((> transfer-level 8) "binary")
+ ((= transfer-level 8) "8bit")
+ (not-omit "7bit")
+ ))
+
+(defun mime/make-charset-default-encoding-alist (transfer-level)
+ (mapcar (function
+ (lambda (charset-type)
+ (let ((charset (car charset-type))
+ (type (nth 1 charset-type))
+ (encoding (nth 2 charset-type))
+ )
+ (if (<= type transfer-level)
+ (cons charset (mime/encoding-name type))
+ (cons charset encoding)
+ ))))
+ mime/charset-type-list))
+
+
+;;; @ coding-system
+;;;
+
+(defvar mime/charset-coding-system-alist
+ (let* (csl
+ (f (if (and running-xemacs-20 (featurep 'mule))
+ (progn
+ (setq csl (coding-system-list))
+ (function
+ (lambda (a cell)
+ (if (memq (cdr cell) csl)
+ (cons cell a)
+ a))))
+ (function
+ (lambda (a cell)
+ (let ((sym (symbol-concat "*" (cdr cell) "*")))
+ (if (boundp sym)
+ (cons (cons (car cell) (symbol-value sym)) a)
+ a))))
+ )))
+ (foldr f nil
+ '(("ISO-2022-JP" . junet)
+ ("ISO-2022-KR" . iso-2022-kr)
+ ("EUC-KR" . euc-kr)
+ ("ISO-8859-1" . ctext)
+ ("ISO-8859-2" . iso-8859-2)
+ ("ISO-8859-3" . iso-8859-3)
+ ("ISO-8859-4" . iso-8859-4)
+ ("ISO-8859-5" . iso-8859-5)
+ ("KOI8-R" . koi8)
+ ("ISO-8859-7" . iso-8859-7)
+ ("ISO-8859-8" . iso-8859-8)
+ ("ISO-8859-9" . iso-8859-9)
+ ("ISO-2022-JP-2" . iso-2022-ss2-7)
+ ("X-ISO-2022-JP-2" . iso-2022-ss2-7)
+ ("ISO-2022-INT-1" . iso-2022-int-1)
+ ("SHIFT_JIS" . sjis)
+ ("X-SHIFTJIS" . sjis)
+ ("BIG5" . big5)
+ ))))
+
+(defvar mime/default-coding-system *ctext*)
+
+(defun mime-charset-encode-string (str charset)
+ (let ((cs (assoc charset mime/charset-coding-system-alist)))
+ (if cs
+ (character-encode-string str (cdr cs))
+ )))
+
+(defun mime-charset-decode-string (str charset)
+ (let ((cs (assoc charset mime/charset-coding-system-alist)))
+ (if cs
+ (character-decode-string str (cdr cs))
+ )))
+
+(defun mime-charset-encode-region (beg end charset &optional encoding)
+ (let ((ct
+ (if (stringp charset)
+ (cdr (assoc (upcase charset) mime/charset-coding-system-alist))
+ mime/default-coding-system)))
+ (if ct
+ (character-encode-region beg end ct)
+ )))
+
+(defun mime-charset-decode-region (beg end charset &optional encoding)
+ (let ((ct
+ (if (stringp charset)
+ (cdr (assoc (upcase charset) mime/charset-coding-system-alist))
+ mime/default-coding-system)))
+ (if ct
+ (character-decode-region beg end ct)
+ )))
;;; @ button
;;;
(provide 'tm-def)
+
+;;; tm-def.el ends here
projects / elisp / tm.git / blobdiff