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//
// EntityResolverImpl.h
//
// Library: XML
// Package: SAX
// Module: SAX
//
// An implementation of EntityResolver.
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#ifndef SAX_EntityResolverImpl_INCLUDED
#define SAX_EntityResolverImpl_INCLUDED
#include "Poco/XML/XML.h"
#include "Poco/XML/XMLString.h"
#include "Poco/SAX/EntityResolver.h"
#include "Poco/URIStreamOpener.h"
namespace Poco {
namespace XML {
class XML_API EntityResolverImpl: public EntityResolver
/// A default implementation of the EntityResolver interface.
///
/// The system ID is first interpreted as an URI and the
/// URIStreamOpener is used to create and open an istream
/// for an InputSource.
///
/// If the system ID is not a valid URI, it is
/// interpreted as a filesystem path and a Poco::FileInputStream
/// is opened for it.
{
public:
EntityResolverImpl();
/// Creates an EntityResolverImpl that uses the default
/// URIStreamOpener.
EntityResolverImpl(const Poco::URIStreamOpener& opener);
/// Creates an EntityResolverImpl that uses the given
/// URIStreamOpener.
~EntityResolverImpl();
/// Destroys the EntityResolverImpl.
InputSource* resolveEntity(const XMLString* publicId, const XMLString& systemId);
/// Tries to use the URIStreamOpener to create and open an istream
/// for the given systemId, which is interpreted as an URI.
///
/// If the systemId is not a valid URI, it is interpreted as
/// a local filesystem path and a Poco::FileInputStream is opened for it.
void releaseInputSource(InputSource* pSource);
/// Deletes the InputSource's stream.
protected:
std::istream* resolveSystemId(const XMLString& systemId);
private:
EntityResolverImpl(const EntityResolverImpl&);
EntityResolverImpl& operator = (const EntityResolverImpl&);
const Poco::URIStreamOpener& _opener;
};
} } // namespace Poco::XML
#endif // SAX_EntityResolverImpl_INCLUDED
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