/*
 * Copyright (C) 2011 Tommi Maekitalo
 * 
 * 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 2.1 of the License, or (at your option) any later version.
 * 
 * As a special exception, you may use this file as part of a free
 * software library without restriction. Specifically, if other files
 * instantiate templates or use macros or inline functions from this
 * file, or you compile this file and link it with other files to
 * produce an executable, this file does not by itself cause the
 * resulting executable to be covered by the GNU General Public
 * License. This exception does not however invalidate any other
 * reasons why the executable file might be covered by the GNU Library
 * General Public License.
 * 
 * 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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */

#include <cxxtools/bin/deserializer.h>
#include <cxxtools/bin/parser.h>
#include <cxxtools/serializationerror.h>
#include <cxxtools/log.h>

#include <sstream>

log_define("cxxtools.bin.deserializer")

namespace cxxtools
{
namespace bin
{

Deserializer::Deserializer(const char* data, size_t size)
{
    begin();

    std::stringbuf in(std::string(data, size));
    if (_parser.advance(in) && !in.in_avail())
    {
        _parser.finish();
        return;
    }

    SerializationError::doThrow("binary deserialization failed - unexpected eof");
}

void Deserializer::read(std::istream& in)
{
    log_trace("read from input stream");

    begin();

    while (in.rdbuf()->sgetc() != std::streambuf::traits_type::eof())
    {
        log_debug("call advance - in_avail=" << in.rdbuf()->in_avail() << " ch=" << in.rdbuf()->sgetc());
        if (_parser.advance(*in.rdbuf(), true))
        {
            _parser.finish();
            return;
        }
    }

    in.setstate(std::ios::eofbit);
    SerializationError::doThrow("binary deserialization failed - unexpected eof");
}

void Deserializer::begin(bool resetDictionary)
{
    cxxtools::Deserializer::begin();
    _parser.begin(*this, resetDictionary);
}

}
}

