Major plugin refactor and cleanup.

Switched to POCO library for unified platform/library interface.
Deprecated the external module API. It was creating more problems than solving.
Removed most built-in libraries in favor of system libraries for easier maintenance.
Cleaned and secured code with help from static analyzers.

vendor/POCO/Foundation/include/Poco/Pipe.h

@@ -0,0 +1,142 @@
+//
+// Pipe.h
+//
+// Library: Foundation
+// Package: Processes
+// Module:  Pipe
+//
+// Definition of the Pipe class.
+//
+// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
+// and Contributors.
+//
+// SPDX-License-Identifier:	BSL-1.0
+//
+
+
+#ifndef Foundation_Pipe_INCLUDED
+#define Foundation_Pipe_INCLUDED
+
+
+#include "Poco/Foundation.h"
+#include "Poco/PipeImpl.h"
+
+
+namespace Poco {
+
+
+class Foundation_API Pipe
+	/// This class implements an anonymous pipe.
+	///
+	/// Pipes are a common method of inter-process communication -
+	/// on Unix, pipes are the oldest form of IPC.
+	///
+	/// A pipe is a half-duplex communication channel, which means
+	/// that data only flows in one direction.
+	/// Pipes have a read-end and a write-end. One process writes to
+	/// the pipe and another process reads the data written by
+	/// its peer. 
+	/// Read and write operations are always synchronous. A read will
+	/// block until data is available and a write will block until
+	/// the reader reads the data.
+	///
+	/// The sendBytes() and readBytes() methods of Pipe are usually
+	/// used through a PipeOutputStream or PipeInputStream and are
+	/// not called directly.
+	///
+	/// Pipe objects have value semantics; the actual work is delegated
+	/// to a reference-counted PipeImpl object.
+{
+public:
+	typedef PipeImpl::Handle Handle; /// The read/write handle or file descriptor.
+	
+	enum CloseMode /// used by close()
+	{
+		CLOSE_READ  = 0x01, /// Close reading end of pipe.
+		CLOSE_WRITE = 0x02, /// Close writing end of pipe.
+		CLOSE_BOTH  = 0x03  /// Close both ends of pipe.
+	};
+	
+	Pipe();
+		/// Creates the Pipe.
+		///
+		/// Throws a CreateFileException if the pipe cannot be
+		/// created.
+		
+	Pipe(const Pipe& pipe);
+		/// Creates the Pipe using the PipeImpl from another one.
+
+	~Pipe();
+		/// Closes and destroys the Pipe.
+
+	Pipe& operator = (const Pipe& pipe);
+		/// Releases the Pipe's PipeImpl and assigns another one.
+
+	int writeBytes(const void* buffer, int length);
+		/// Sends the contents of the given buffer through
+		/// the pipe. Blocks until the receiver is ready
+		/// to read the data.
+		///
+		/// Returns the number of bytes sent.
+		///
+		/// Throws a WriteFileException if the data cannot be written.
+
+	int readBytes(void* buffer, int length);
+		/// Receives data from the pipe and stores it
+		/// in buffer. Up to length bytes are received.
+		/// Blocks until data becomes available.
+		///
+		/// Returns the number of bytes received, or 0
+		/// if the pipe has been closed.
+		///
+		/// Throws a ReadFileException if nothing can be read.
+
+	Handle readHandle() const;
+		/// Returns the read handle or file descriptor
+		/// for the Pipe. For internal use only.
+		
+	Handle writeHandle() const;
+		/// Returns the write handle or file descriptor
+		/// for the Pipe. For internal use only.
+
+	void close(CloseMode mode = CLOSE_BOTH);
+		/// Depending on the argument, closes either the
+		/// reading end, the writing end, or both ends
+		/// of the Pipe.
+		
+private:
+	PipeImpl* _pImpl;
+};
+
+
+//
+// inlines
+//
+inline int Pipe::writeBytes(const void* buffer, int length)
+{
+	return _pImpl->writeBytes(buffer, length);
+}
+
+
+inline int Pipe::readBytes(void* buffer, int length)
+{
+	return _pImpl->readBytes(buffer, length);
+}
+
+
+inline Pipe::Handle Pipe::readHandle() const
+{
+	return _pImpl->readHandle();
+}
+
+
+inline Pipe::Handle Pipe::writeHandle() const
+{
+	return _pImpl->writeHandle();
+}
+
+
+} // namespace Poco
+
+
+#endif // Foundation_Pipe_INCLUDED