//
// ConfigurationMapper.cpp
//
// $Id: //poco/Main/Util/src/ConfigurationMapper.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
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//
// 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
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//


#include "Util/ConfigurationMapper.h"


Util_BEGIN


ConfigurationMapper::ConfigurationMapper(const std::string& fromPrefix, const std::string& toPrefix, AbstractConfiguration* pConfig):
	_fromPrefix(fromPrefix),
	_toPrefix(toPrefix),
	_pConfig(pConfig)
{
	poco_check_ptr (pConfig);

	if (!_fromPrefix.empty()) _fromPrefix += '.';
	if (!_toPrefix.empty()) _toPrefix += '.';

	_pConfig->duplicate();
}


ConfigurationMapper::~ConfigurationMapper()
{
	_pConfig->release();
}


bool ConfigurationMapper::getRaw(const std::string& key, std::string& value) const
{
	std::string translatedKey = translateKey(key);
	return _pConfig->getRaw(translatedKey, value);
}


void ConfigurationMapper::setRaw(const std::string& key, const std::string& value)
{
	std::string translatedKey = translateKey(key);
	_pConfig->setRaw(translatedKey, value); 
}


void ConfigurationMapper::enumerate(const std::string& key, Keys& range) const
{
	std::string cKey(key);
	if (!cKey.empty()) cKey += '.';
	std::string::size_type keyLen = cKey.length();
	if (keyLen < _toPrefix.length())
	{
		if (_toPrefix.compare(0, keyLen, cKey) == 0)
		{
			std::string::size_type pos = _toPrefix.find_first_of('.', keyLen);
			poco_assert_dbg(pos != std::string::npos);
			range.push_back(_toPrefix.substr(keyLen, pos - keyLen));
		}
	}
	else
	{
		std::string translatedKey;
		if (cKey == _toPrefix)
		{
			translatedKey = _fromPrefix;
			if (!translatedKey.empty())
				translatedKey.resize(translatedKey.length() - 1);
		}
		else translatedKey = translateKey(key);
		_pConfig->enumerate(translatedKey, range);
	}
}


std::string ConfigurationMapper::translateKey(const std::string& key) const
{
	std::string result(key);
	if (result.compare(0, _toPrefix.size(), _toPrefix) == 0)
		result.replace(0, _toPrefix.size(), _fromPrefix);
	return result;
}


Util_END