;;; mcs-e20.el --- MIME charset implementation for Emacs 20.1 and 20.2 ;; Copyright (C) 1996,1997,1998,1999,2000 Free Software Foundation, Inc. ;; Author: MORIOKA Tomohiko ;; 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. ;;; Commentary: ;; This module requires Emacs 20.1 and 20.2. ;;; Code: (require 'pces) (eval-when-compile (require 'static)) (defsubst encode-mime-charset-region (start end charset &optional lbt) "Encode the text between START and END as MIME CHARSET." (let (cs) (if (and enable-multibyte-characters (setq cs (mime-charset-to-coding-system charset lbt))) (encode-coding-region start end cs) ))) (defsubst decode-mime-charset-region (start end charset &optional lbt) "Decode the text between START and END as MIME CHARSET." (let (cs) (if (and enable-multibyte-characters (setq cs (mime-charset-to-coding-system charset lbt))) (decode-coding-region start end cs) ))) (defsubst encode-mime-charset-string (string charset &optional lbt) "Encode the STRING as MIME CHARSET." (let (cs) (if (and enable-multibyte-characters (setq cs (mime-charset-to-coding-system charset lbt))) (encode-coding-string string cs) string))) (defsubst decode-mime-charset-string (string charset &optional lbt) "Decode the STRING as MIME CHARSET." (let (cs) (if (and enable-multibyte-characters (setq cs (mime-charset-to-coding-system charset lbt))) (decode-coding-string string cs) 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) ;;((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 (find-coding-system 'iso-8859-15) '((ascii latin-iso8859-15) . iso-8859-15)) ((ascii latin-jisx0201 japanese-jisx0208-1978 japanese-jisx0208) . iso-2022-jp) ((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-tis620 composition) . tis-620) ((ascii latin-iso8859-1 greek-iso8859-7 latin-jisx0201 japanese-jisx0208-1978 chinese-gb2312 japanese-jisx0208 korean-ksc5601 japanese-jisx0212) . 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) ;;((ascii latin-iso8859-1 latin-iso8859-2 ;; cyrillic-iso8859-5 greek-iso8859-7 ;; latin-jisx0201 japanese-jisx0208-1978 ;; chinese-gb2312 japanese-jisx0208 ;; korean-ksc5601 japanese-jisx0212 ;; chinese-cns11643-1 chinese-cns11643-2 ;; chinese-cns11643-3 chinese-cns11643-4 ;; chinese-cns11643-5 chinese-cns11643-6 ;; chinese-cns11643-7) . iso-2022-int-1) ))) (defun-maybe coding-system-get (coding-system prop) "Extract a value from CODING-SYSTEM's property list for property PROP." (plist-get (coding-system-plist coding-system) prop) ) (defun coding-system-to-mime-charset (coding-system) "Convert CODING-SYSTEM to a MIME-charset. Return nil if corresponding MIME-charset is not found." (or (car (rassq coding-system mime-charset-coding-system-alist)) (coding-system-get coding-system 'mime-charset) )) (defun-maybe-cond mime-charset-list () "Return a list of all existing MIME-charset." ((boundp 'coding-system-list) (let ((dest (mapcar (function car) mime-charset-coding-system-alist)) (rest coding-system-list) cs) (while rest (setq cs (car rest)) (unless (rassq cs mime-charset-coding-system-alist) (if (setq cs (coding-system-get cs 'mime-charset)) (or (rassq cs mime-charset-coding-system-alist) (memq cs dest) (setq dest (cons cs dest)) ))) (setq rest (cdr rest))) dest)) (t (let ((dest (mapcar (function car) mime-charset-coding-system-alist)) (rest (coding-system-list)) cs) (while rest (setq cs (car rest)) (unless (rassq cs mime-charset-coding-system-alist) (when (setq cs (or (coding-system-get cs 'mime-charset) (and (setq cs (aref (coding-system-get cs 'coding-spec) 2)) (string-match "(MIME:[ \t]*\\([^,)]+\\)" cs) (match-string 1 cs)))) (setq cs (intern (downcase cs))) (or (rassq cs mime-charset-coding-system-alist) (memq cs dest) (setq dest (cons cs dest)) ))) (setq rest (cdr rest))) dest) )) (static-when (and (string= (decode-coding-string "\e.A\eN!" 'ctext) "\eN!") (or (not (find-coding-system 'x-ctext)) (coding-system-get 'x-ctext 'apel))) (unless (find-coding-system 'x-ctext) (make-coding-system 'x-ctext 2 ?x "Compound text based generic encoding for decoding unknown messages." '((ascii t) (latin-iso8859-1 t) t t nil ascii-eol ascii-cntl nil locking-shift single-shift nil nil nil init-bol nil nil) '((safe-charsets . t) (mime-charset . x-ctext))) (coding-system-put 'x-ctext 'apel t) )) ;;; @ end ;;; (require 'product) (product-provide (provide 'mcs-e20) (require 'apel-ver)) ;;; mcs-e20.el ends here