inifileconfiguration.cpp

This software aims to create an applet and panel tools to manage a wireless interface card, such as

//
// IniFileConfiguration.cpp
//
// $Id: //poco/Main/Util/src/IniFileConfiguration.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/IniFileConfiguration.h"
#include "Foundation/Exception.h"
#include "Foundation/String.h"
#include <fstream>
#include <locale>
#include <set>


using Foundation::icompare;
using Foundation::trim;


Util_BEGIN


IniFileConfiguration::IniFileConfiguration()
{
}


IniFileConfiguration::IniFileConfiguration(std::istream& istr)
{
	load(istr);
}

	
IniFileConfiguration::IniFileConfiguration(const std::string& path)
{
	load(path);
}


IniFileConfiguration::~IniFileConfiguration()
{
}


void IniFileConfiguration::load(std::istream& istr)
{
	_map.clear();
	_sectionKey.clear();
	while (!istr.eof())
	{
		parseLine(istr);
	}
}
	

void IniFileConfiguration::load(const std::string& path)
{
	std::ifstream istr(path.c_str());
	if (istr.good())
		load(istr);
	else
		throw Foundation::OpenFileException(path);
}


bool IniFileConfiguration::getRaw(const std::string& key, std::string& value) const
{
	IStringMap::const_iterator it = _map.find(key);
	if (it != _map.end())
	{
		value = it->second;
		return true;
	}
	else return false;
}


void IniFileConfiguration::setRaw(const std::string& key, const std::string& value)
{
	throw Foundation::NotImplementedException("Setting a property in an IniFileConfiguration");
}


void IniFileConfiguration::enumerate(const std::string& key, Keys& range) const
{
	std::set<std::string> keys;
	std::string prefix = key;
	if (!prefix.empty()) prefix += '.';
	std::string::size_type psize = prefix.size();
	for (IStringMap::const_iterator it = _map.begin(); it != _map.end(); ++it)
	{
		if (icompare(it->first, psize, prefix) == 0)
		{
			std::string subKey;
			std::string::size_type end = it->first.find('.', psize);
			if (end == std::string::npos)
				subKey = it->first.substr(psize);
			else
				subKey = it->first.substr(psize, end - psize);
			if (keys.find(subKey) == keys.end())
			{
				range.push_back(subKey);
				keys.insert(subKey);
			}
		}
	}
}


bool IniFileConfiguration::ICompare::operator () (const std::string& s1, const std::string& s2) const
{
	return icompare(s1, s2) < 0;
}


void IniFileConfiguration::parseLine(std::istream& istr)
{
	static const int eof = std::char_traits<char>::eof(); 
	std::locale loc;

	int c = istr.get();
	while (c != eof && isspace((char) c, loc)) c = istr.get();
	if (c != eof)
	{
		if (c == ';')
		{
			while (c != eof && c != '\n') c = istr.get();
		}
		else if (c == '[')
		{
			std::string key;
			c = istr.get();
			while (c != eof && c != ']' && c != '\n') { key += (char) c; c = istr.get(); }
			_sectionKey = trim(key);
		}
		else
		{
			std::string key;
			while (c != eof && c != '=' && c != '\n') { key += (char) c; c = istr.get(); }
			std::string value;
			if (c == '=')
			{
				c = istr.get();
				while (c != eof && c != '\n') { value += (char) c; c = istr.get(); }
			}
			std::string fullKey = _sectionKey;
			if (!fullKey.empty()) fullKey += '.';
			fullKey.append(trim(key));
			_map[fullKey] = trim(value);
		}
	}
}


Util_END