first commit

Minecraft.World/ByteArrayOutputStream.cpp

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+#include "stdafx.h"
+
+#include "ByteArrayOutputStream.h"
+
+// Creates a new byte array output stream. The buffer capacity is initially 32 bytes, though its size increases if necessary.
+ByteArrayOutputStream::ByteArrayOutputStream()
+{
+	count = 0;
+	buf = byteArray( 32 );
+}
+
+//Creates a new byte array output stream, with a buffer capacity of the specified size, in bytes.
+//Parameters:
+//size - the initial size.
+ByteArrayOutputStream::ByteArrayOutputStream(unsigned int size)
+{
+	count = 0;
+	buf = byteArray( size );
+}
+
+ByteArrayOutputStream::~ByteArrayOutputStream()
+{
+	if (buf.data != NULL)
+		delete[] buf.data;
+}
+
+//Writes the specified byte to this byte array output stream.
+//Parameters:
+//b - the byte to be written.
+void ByteArrayOutputStream::write(unsigned int b)
+{
+	// If we will fill the buffer we need to make it bigger
+	if( count + 1 >=  buf.length )
+		buf.resize( buf.length * 2 );
+
+	buf[count] = (byte) b;
+	count++;
+}
+
+// Writes b.length bytes from the specified byte array to this output stream.
+//The general contract for write(b) is that it should have exactly the same effect as the call write(b, 0, b.length).
+void ByteArrayOutputStream::write(byteArray b)
+{
+	write(b, 0, b.length);
+}
+
+//Writes len bytes from the specified byte array starting at offset off to this byte array output stream.
+//Parameters:
+//b - the data.
+//off - the start offset in the data.
+//len - the number of bytes to write.
+void ByteArrayOutputStream::write(byteArray b, unsigned int offset, unsigned int length)
+{
+	assert( b.length >= offset + length );
+
+	// If we will fill the buffer we need to make it bigger
+	if( count + length >=  buf.length )
+		buf.resize( max( count + length + 1, buf.length * 2 ) );
+
+	XMemCpy( &buf[count], &b[offset], length );
+	//std::copy( b->data+offset, b->data+offset+length, buf->data + count ); // Or this instead?
+
+	count += length;
+}
+
+//Closing a ByteArrayOutputStream has no effect.
+//The methods in this class can be called after the stream has been closed without generating an IOException.
+void ByteArrayOutputStream::close()
+{
+}
+
+//Creates a newly allocated byte array. Its size is the current size of this output stream and the valid contents of the buffer have been copied into it.
+//Returns:
+//the current contents of this output stream, as a byte array.
+byteArray ByteArrayOutputStream::toByteArray()
+{
+	byteArray out(count);
+	memcpy(out.data,buf.data,count);
+	return out;
+}