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120 lines
3.3 KiB
C++
120 lines
3.3 KiB
C++
//
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// URIStreamFactory.h
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//
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// $Id: //poco/1.4/Foundation/include/Poco/URIStreamFactory.h#1 $
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//
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// Library: Foundation
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// Package: URI
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// Module: URIStreamFactory
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//
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// Definition of the URIStreamFactory class.
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//
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// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// Permission is hereby granted, free of charge, to any person or organization
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// obtaining a copy of the software and accompanying documentation covered by
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// this license (the "Software") to use, reproduce, display, distribute,
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// execute, and transmit the Software, and to prepare derivative works of the
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// Software, and to permit third-parties to whom the Software is furnished to
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// do so, all subject to the following:
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//
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// The copyright notices in the Software and this entire statement, including
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// the above license grant, this restriction and the following disclaimer,
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// must be included in all copies of the Software, in whole or in part, and
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// all derivative works of the Software, unless such copies or derivative
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// works are solely in the form of machine-executable object code generated by
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// a source language processor.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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// SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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// FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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// ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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#ifndef Foundation_URIStreamFactory_INCLUDED
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#define Foundation_URIStreamFactory_INCLUDED
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#include "Poco/Foundation.h"
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#include <istream>
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namespace Poco {
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class URI;
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class Foundation_API URIStreamFactory
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/// This class defines the interface that all
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/// URI stream factories must implement.
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///
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/// Subclasses must implement the open() method.
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{
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public:
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URIStreamFactory();
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/// Creates the URIStreamFactory.
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virtual std::istream* open(const URI& uri) = 0;
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/// Tries to create and open an input stream for the
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/// resource specified by the given URI.
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///
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/// If the stream cannot be opened for whatever reason,
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/// an appropriate IOException must be thrown.
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///
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/// If opening the stream results in a redirect, a
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/// URIRedirection exception should be thrown.
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protected:
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virtual ~URIStreamFactory();
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/// Destroys the URIStreamFactory.
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private:
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URIStreamFactory(const URIStreamFactory&);
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URIStreamFactory& operator = (const URIStreamFactory&);
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friend class URIStreamOpener;
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};
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class Foundation_API URIRedirection
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/// An instance of URIRedirection is thrown by a URIStreamFactory::open()
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/// if opening the original URI resulted in a redirection response
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/// (such as a MOVED PERMANENTLY in HTTP).
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{
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public:
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URIRedirection(const std::string& uri);
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URIRedirection(const URIRedirection& redir);
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URIRedirection& operator = (const URIRedirection& redir);
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void swap(URIRedirection& redir);
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const std::string& uri() const;
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/// Returns the new URI.
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private:
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URIRedirection();
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std::string _uri;
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};
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//
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// inlines
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//
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inline const std::string& URIRedirection::uri() const
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{
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return _uri;
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}
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} // namespace Poco
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#endif // Foundation_URIStreamFactory_INCLUDED
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