/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
#include <log4cxx/logstring.h>
#include <log4cxx/helpers/bufferedwriter.h>
#include <log4cxx/helpers/pool.h>

using namespace LOG4CXX_NS;
using namespace LOG4CXX_NS::helpers;

struct BufferedWriter::BufferedWriterPriv
{
	BufferedWriterPriv(WriterPtr& out1, size_t sz1) :
		out(out1),
		sz(sz1)
	{}

	WriterPtr out;
	size_t sz;
	LogString buf;
};

IMPLEMENT_LOG4CXX_OBJECT(BufferedWriter)

BufferedWriter::BufferedWriter(WriterPtr& out1)
	: BufferedWriter(out1, 1024)
{
}

BufferedWriter::BufferedWriter(WriterPtr& out1, size_t sz1)
	: m_priv(std::make_unique<BufferedWriterPriv>(out1, sz1))
{
}

BufferedWriter::~BufferedWriter()
{
}

void BufferedWriter::close(Pool& p)
{
	flush(p);
	m_priv->out->close(p);
}

void BufferedWriter::flush(Pool& p)
{
	if (m_priv->buf.length() > 0)
	{
		m_priv->out->write(m_priv->buf, p);
		m_priv->buf.erase(m_priv->buf.begin(), m_priv->buf.end());
	}
}

void BufferedWriter::write(const LogString& str, Pool& p)
{
	if (m_priv->buf.length() + str.length() > m_priv->sz)
	{
		m_priv->out->write(m_priv->buf, p);
		m_priv->buf.erase(m_priv->buf.begin(), m_priv->buf.end());
	}

	if (str.length() > m_priv->sz)
	{
		m_priv->out->write(str, p);
	}
	else
	{
		m_priv->buf.append(str);
	}
}

WriterPtr BufferedWriter::getWriter() const
{
	return m_priv->out;
}

