layeredconfiguration.cpp

来自「This software aims to create an applet a」· C++ 代码 · 共 124 行

//
// LayeredConfiguration.cpp
//
// $Id: //poco/Main/Util/src/LayeredConfiguration.cpp#1 $
//
// Copyright (c) 2004-2005, Guenter Obiltschnig/Applied Informatics.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
//
// 3. Redistributions in any form must be accompanied by information on
//    how to obtain complete source code for this software and any
//    accompanying software that uses this software.  The source code
//    must either be included in the distribution or be available for no
//    more than the cost of distribution plus a nominal fee, and must be
//    freely redistributable under reasonable conditions.  For an
//    executable file, complete source code means the source code for all
//    modules it contains.  It does not include source code for modules or
//    files that typically accompany the major components of the operating
//    system on which the executable file runs.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//


#include "Util/LayeredConfiguration.h"
#include "Foundation/Exception.h"
#include <set>


using Foundation::AutoPtr;
using Foundation::RuntimeException;


Util_BEGIN


LayeredConfiguration::LayeredConfiguration()
{
}


LayeredConfiguration::~LayeredConfiguration()
{
}


void LayeredConfiguration::add(AbstractConfiguration* pConfig)
{
	poco_check_ptr (pConfig);

	_configs.push_back(ConfigPtr(pConfig, true));
}


void LayeredConfiguration::addFront(AbstractConfiguration* pConfig)
{
	poco_check_ptr (pConfig);

	_configs.insert(_configs.begin(), ConfigPtr(pConfig, true));
}


bool LayeredConfiguration::getRaw(const std::string& key, std::string& value) const
{
	for (ConfigVec::const_iterator it = _configs.begin(); it != _configs.end(); ++it)
	{
		if ((*it)->getRaw(key, value))
			return true;
	}
	return false;
}


void LayeredConfiguration::setRaw(const std::string& key, const std::string& value)
{
	if (!_configs.empty())
		_configs.back()->setRaw(key, value);
	else
		throw RuntimeException("No configuration object to store the property", key);
}


void LayeredConfiguration::enumerate(const std::string& key, Keys& range) const
{
	std::set<std::string> keys;
	for (ConfigVec::const_iterator itc = _configs.begin(); itc != _configs.end(); ++itc)
	{
		Keys partRange;
		(*itc)->enumerate(key, partRange);
		for (Keys::const_iterator itr = partRange.begin(); itr != partRange.end(); ++itr)
		{
			if (keys.find(*itr) == keys.end())
			{
				range.push_back(*itr);
				keys.insert(*itr);
			}
		}
	}
}


Util_END