#ifndef RFCDECODER_H
#define RFCDECODER_H
/**********************************************************************
 *
 *   rfcdecoder.h  - handler for various rfc/mime encodings
 *   Copyright (C) 2000 s.carstens@gmx.de
 *
 *   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 of the License, 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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 *
 *   Send comments and bug fixes to s.carstens@gmx.de
 *
 *********************************************************************/

#include <tqstring.h>

class QTextCodec;

/**
 * handler for various rfc/mime encodings
 * @author Sven Carstens <s.carstens@gmx.de>
 * @date 2000
 * @todo rename to rfcCodecs as it encodes too.
 */
class rfcDecoder
{

public:

/** Convert an IMAP mailbox to a Unicode path
 */
  static TQString fromIMAP (const TQString & src);
/** Convert Unicode path to modified UTF-7 IMAP mailbox
 */
  static TQString toIMAP (const TQString & inSrc);
/** replace " with \" and \ with \\ " and \ characters */
  static TQString quoteIMAP (const TQString & src);

  /** remove \ from a string 
   * @bug I'm pretty sure this doesn't do what the author meant it to do
   */
  static TQString decodeQuoting(const TQString &aStr);

  /**
   * fetch a codec by name
   * @return Text Codec object
   */
  static TQTextCodec *codecForName (const TQString &);

  // decoder for RFC2047 and RFC1522
  /** decode a RFC2047 String */
  static const TQString decodeRFC2047String (const TQString & _str,
                                            TQString & charset,
                                            TQString & language);
  /** decode a RFC2047 String */
  static const TQString decodeRFC2047String (const TQString & _str,
                                            TQString & charset);
  /** decode a RFC2047 String */
  static const TQString decodeRFC2047String (const TQString & _str);

  // encoder for RFC2047 and RFC1522
  /** encode a RFC2047 String */
  static const TQString encodeRFC2047String (const TQString & _str,
                                            TQString & charset,
                                            TQString & language);
  /** encode a RFC2047 String */
  static const TQString encodeRFC2047String (const TQString & _str,
                                            TQString & charset);
  /** encode a RFC2047 String */
  static const TQString encodeRFC2047String (const TQString & _str);

  /** encode a RFC2231 String */
  static const TQString encodeRFC2231String (const TQString & _str);
  /** decode a RFC2231 String */
  static const TQString decodeRFC2231String (const TQString & _str);
};

#endif