//-------------------------------------------------------------------------------
// <copyright file="LqrSMACLineMachine.cpp" company="LiquidRobotics">
//
// Copyright (c) 2014 Liquid Robotics, Inc.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
//
// This software is associated with a release.  Liquid Robotics makes no
// representation that the design, interfaces or component distribution will
// remain unchanged in future releases.
//
// </copyright>
//
// <summary>
//   Implementation of the LineMachine class, which blocks bytes of received data
//   into lines and fires events
// </summary>
//
// <owner>Mike Cookson</owner>
//-------------------------------------------------------------------------------

#include "LqrSMACLineMachine.h"
#include <boost/foreach.hpp>

using namespace std;
using namespace boost;
using namespace LiquidRobotics::SMACFramework;

namespace LiquidRobotics {
namespace SMACFramework {

LineMachine::LineMachine()
: gotCR(false)
{
}

LineMachine::~LineMachine()
{
}

void LineMachine::Feed(const ByteArray& bytes)
{
	for (ByteArray::size_type idx = 0; idx < bytes.size(); ++idx)
	{
		const byte b = bytes[idx];
		bool newLine = false;

		switch((char) b)
		{
		case '\r':

			gotCR = true;
			newLine = true;
			break;

		case '\n':

			newLine = !gotCR;
			break;

		default:

			current << (char) b;

			if (current.tellp() == 1000)
				newLine = true;

			break;
		}

		gotCR = (((char) b) == '\r');

		if (newLine)
		{
			string temp = current.str();

			current.str("");

			hereIsLine_Signal(*this, temp);
		}
	}
}

void LineMachine::Reset()
{
	current.str("");
}

LineMachine::ScopedConnectionPtr LineMachine::Subscribe(T_HereIsLine_Signal::slot_type slot)
{
	ScopedConnectionPtr result;

	result.reset(new ScopedConnection(hereIsLine_Signal.connect(slot)));
	return result;
}

}
}
