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Minecraft.World/FileOutputStream.cpp

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+#include "stdafx.h"
+#include "File.h"
+#include "FileOutputStream.h"
+
+//Creates a file output stream to write to the file represented by the specified File object. A new FileDescriptor object is
+//created to represent this file connection.
+//First, if there is a security manager, its checkWrite method is called with the path represented by the file argument as its argument.
+//
+//If the file exists but is a directory rather than a regular file, does not exist but cannot be created, or cannot be opened
+//for any other reason then a FileNotFoundException is thrown.
+//
+//Parameters:
+//file - the file to be opened for writing.
+FileOutputStream::FileOutputStream(const File &file) : m_fileHandle( INVALID_HANDLE_VALUE )
+{
+	if( file.exists() && file.isDirectory())
+	{
+		// TODO 4J Stu - FileNotFoundException
+		return;
+	}
+
+#ifdef _DURANGO
+	m_fileHandle = CreateFile(
+		file.getPath().c_str() , // file name
+		GENERIC_WRITE, // access mode
+		0, // share mode // TODO 4J Stu - Will we need to share file? Probably not but...
+		NULL, // Unused
+		OPEN_ALWAYS , // how to create
+		FILE_ATTRIBUTE_NORMAL , // file attributes
+		NULL // Unsupported
+		);
+#else
+	m_fileHandle = CreateFile(
+		wstringtofilename(file.getPath()) , // file name
+		GENERIC_WRITE, // access mode
+		0, // share mode // TODO 4J Stu - Will we need to share file? Probably not but...
+		NULL, // Unused
+		OPEN_ALWAYS , // how to create
+		FILE_ATTRIBUTE_NORMAL , // file attributes
+		NULL // Unsupported
+		);
+#endif
+
+	if( m_fileHandle == INVALID_HANDLE_VALUE )
+	{
+		DWORD error = GetLastError();
+		// TODO 4J Stu - Any form of error/exception handling
+	}
+}
+
+FileOutputStream::~FileOutputStream()
+{
+	if( m_fileHandle != INVALID_HANDLE_VALUE )
+		CloseHandle( m_fileHandle );
+}
+
+//Writes the specified byte to this file output stream. Implements the write method of OutputStream.
+//Parameters:
+//b - the byte to be written.
+void FileOutputStream::write(unsigned int b)
+{	
+	DWORD numberOfBytesWritten;
+
+	byte value = (byte) b;
+
+	BOOL result = WriteFile(
+		m_fileHandle, // handle to file
+		&value, // data buffer
+		1, // number of bytes to write
+		&numberOfBytesWritten, // number of bytes written
+		NULL // overlapped buffer
+		);
+
+	if( result == 0 )
+	{
+		// TODO 4J Stu - Some kind of error handling
+	}
+	else if( numberOfBytesWritten == 0 )
+	{
+		// File pointer is past the end of the file
+	}
+}
+
+//Writes b.length bytes from the specified byte array to this file output stream.
+//Parameters:
+//b - the data.
+void FileOutputStream::write(byteArray b)
+{
+	DWORD numberOfBytesWritten;
+
+	BOOL result = WriteFile(
+		m_fileHandle, // handle to file
+		&b.data, // data buffer
+		b.length, // number of bytes to write
+		&numberOfBytesWritten, // number of bytes written
+		NULL // overlapped buffer
+		);
+
+	if( result == 0 )
+	{
+		// TODO 4J Stu - Some kind of error handling
+	}
+	else if( numberOfBytesWritten == 0 || numberOfBytesWritten != b.length  )
+	{
+		// File pointer is past the end of the file
+	}
+}
+
+//Writes len bytes from the specified byte array starting at offset off to this file output stream.
+//Parameters:
+//b - the data.
+//off - the start offset in the data.
+//len - the number of bytes to write.
+void FileOutputStream::write(byteArray b, unsigned int offset, unsigned int length)
+{
+	// 4J Stu - We don't want to write any more than the array buffer holds
+	assert( length <= ( b.length - offset ) );
+
+	DWORD numberOfBytesWritten;
+
+	BOOL result = WriteFile(
+		m_fileHandle, // handle to file
+		&b[offset], // data buffer
+		length, // number of bytes to write
+		&numberOfBytesWritten, // number of bytes written
+		NULL // overlapped buffer
+		);
+
+	if( result == 0 )
+	{
+		// TODO 4J Stu - Some kind of error handling
+	}
+	else if( numberOfBytesWritten == 0 || numberOfBytesWritten != length  )
+	{
+		// File pointer is past the end of the file
+	}
+}
+//
+//Closes this file output stream and releases any system resources associated with this stream.
+//This file output stream may no longer be used for writing bytes.
+//If this stream has an associated channel then the channel is closed as well.
+void FileOutputStream::close()
+{
+	BOOL result = CloseHandle( m_fileHandle );
+
+	if( result == 0 )
+	{
+		// TODO 4J Stu - Some kind of error handling
+	}
+
+	// Stop the dtor from trying to close it again
+	m_fileHandle = INVALID_HANDLE_VALUE;
+}