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cos-cpp-sdk/third_party/include/Poco/Net/HTTPFixedLengthStream.h

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+//
+// HTTPFixedLengthStream.h
+//
+// Library: Net
+// Package: HTTP
+// Module:  HTTPFixedLengthStream
+//
+// Definition of the HTTPFixedLengthStream class.
+//
+// Copyright (c) 2005-2006, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier:	BSL-1.0
+//
+
+
+#ifndef Net_HTTPFixedLengthStream_INCLUDED
+#define Net_HTTPFixedLengthStream_INCLUDED
+
+
+#include "Poco/Net/Net.h"
+#include "Poco/Net/HTTPBasicStreamBuf.h"
+#include <cstddef>
+#include <istream>
+#include <ostream>
+
+
+namespace Poco {
+namespace Net {
+
+
+class HTTPSession;
+
+
+class Net_API HTTPFixedLengthStreamBuf: public HTTPBasicStreamBuf
+	/// This is the streambuf class used for reading and writing fixed-size
+	/// HTTP message bodies.
+	///
+	/// At most a given number of bytes are read or written.
+{
+public:
+	typedef HTTPBasicStreamBuf::openmode openmode;
+
+#if defined(POCO_HAVE_INT64)
+	typedef Poco::Int64 ContentLength;
+#else
+	typedef std::streamsize ContentLength;
+#endif
+
+	HTTPFixedLengthStreamBuf(HTTPSession& session, ContentLength length, openmode mode);
+	~HTTPFixedLengthStreamBuf();
+	
+protected:
+	int readFromDevice(char* buffer, std::streamsize length);
+	int writeToDevice(const char* buffer, std::streamsize length);
+
+private:
+	HTTPSession&    _session;
+	ContentLength _length;
+	ContentLength _count;
+};
+
+
+class Net_API HTTPFixedLengthIOS: public virtual std::ios
+	/// The base class for HTTPFixedLengthInputStream.
+{
+public:
+	HTTPFixedLengthIOS(HTTPSession& session, HTTPFixedLengthStreamBuf::ContentLength length, HTTPFixedLengthStreamBuf::openmode mode);
+	~HTTPFixedLengthIOS();
+	HTTPFixedLengthStreamBuf* rdbuf();
+
+protected:
+	HTTPFixedLengthStreamBuf _buf;
+};
+
+
+class Net_API HTTPFixedLengthInputStream: public HTTPFixedLengthIOS, public std::istream
+	/// This class is for internal use by HTTPSession only.
+{
+public:
+	HTTPFixedLengthInputStream(HTTPSession& session, HTTPFixedLengthStreamBuf::ContentLength length);
+	~HTTPFixedLengthInputStream();
+	
+	void* operator new(std::size_t size);
+	void operator delete(void* ptr);
+	
+private:
+	static Poco::MemoryPool _pool;
+};
+
+
+class Net_API HTTPFixedLengthOutputStream: public HTTPFixedLengthIOS, public std::ostream
+	/// This class is for internal use by HTTPSession only.
+{
+public:
+	HTTPFixedLengthOutputStream(HTTPSession& session, HTTPFixedLengthStreamBuf::ContentLength length);
+	~HTTPFixedLengthOutputStream();
+
+	void* operator new(std::size_t size);
+	void operator delete(void* ptr);
+	
+private:
+	static Poco::MemoryPool _pool;
+};
+
+
+} } // namespace Poco::Net
+
+
+#endif // Net_HTTPFixedLengthStream_INCLUDED