vos/corelibs/typechain/handlers/type_base64.hh

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/* $Id: type_base64.hh,v 1.10 2003/07/04 16:36:26 reed Exp $ */

/** @file type_base64.hh    
    Defines type handler class for base64-encoded data.
    @author Reed 10/01
*/

/*
    This file is part of the Virtual Object System of
    the Interreality project (http://interreality.org).

    Copyright (C) 2001, 2002 Reed Hedges <reed@zerohour.net>

    This library is free software; you can redistribute it and/or
    modify it under the terms of the GNU Lesser General Public
    License as published by the Free Software Foundation; either
    version 2 of the License, or (at your option) any later version.

    This library 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
    Lesser General Public License for more details.

    You should have received a copy of the GNU Lesser General Public
    License along with this library; if not, write to the Free Software
    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307  USA
*/

#ifndef _TYPE_BASE64_HH_
#define _TYPE_BASE64_HH_

#include "typechain/typehandler.hh"

#define LINELEN 72            /* Encoded line length (max 76) */

typedef unsigned char byte;       /* Byte type */




/** Class to encode and decode base64 data.
    @see TypeHandler
    @see TypeChain
    @author Reed Hedges <reed@zerohour.net> December, 2001

*/

class TypeBase64 : public TypeHandler  {
protected:
    byte dtable[256];         /* Encode / decode table */
    int linelength;       /* Length of encoded output line */

public:
    char* eol;          /* End of line sequence */
    int errcheck;  /* Check decode input for errors ? */

    TypeBase64();
    
    /** Decode data. 
    @param data the base64 data to decode.
    @param params not used.
    @warning Returns partial data on error, and prints message to stderr (i think).
    */
    virtual void decode(string& data, TypeParams& params); 
    
    /** Encode data. 
    @todo not finished yet.
    @param data the data to encode into base64.
    @param params not used.
    */
    virtual void encode(string& data, TypeParams& params);
};


#endif

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