uristreamopener.cpp

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

//
// URIStreamOpener.cpp
//
// $Id: //poco/Main/Foundation/src/URIStreamOpener.cpp#5 $
//
// Copyright (c) 2004, 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 "Foundation/URIStreamOpener.h"
#include "Foundation/URIStreamFactory.h"
#include "Foundation/URIFileStreamFactory.h"
#include "Foundation/URI.h"
#include "Foundation/SingletonHolder.h"
#include "Foundation/Exception.h"


Foundation_BEGIN


URIStreamOpener::URIStreamOpener()
{
	registerStreamFactory("file", new URIFileStreamFactory);
}


URIStreamOpener::~URIStreamOpener()
{
	for (FactoryMap::iterator it = _map.begin(); it != _map.end(); ++it)
		delete it->second;
}


std::istream* URIStreamOpener::open(const URI& uri) const
{
	FastMutex::ScopedLock lock(_mutex);

	std::string scheme;
	if (uri.isRelative())
		scheme = "file";
	else
		scheme = uri.getScheme();
	FactoryMap::const_iterator it = _map.find(scheme);
	if (it != _map.end())
		return it->second->open(uri);
	else
		throw UnknownURISchemeException(scheme);
}

	
void URIStreamOpener::registerStreamFactory(const std::string& scheme, URIStreamFactory* pFactory)
{
	poco_check_ptr (pFactory);

	FastMutex::ScopedLock lock(_mutex);
	if (_map.find(scheme) == _map.end())
	{
		_map[scheme] = pFactory;
	}
	else throw ExistsException("An URIStreamFactory for the given scheme has already been registered", scheme);
}


URIStreamOpener& URIStreamOpener::defaultOpener()
{
	static SingletonHolder<URIStreamOpener> sh;
	return *sh.get();
}


Foundation_END