diff options
Diffstat (limited to 'dotnet/Qpid.Buffer/SimpleByteBuffer.cs')
-rw-r--r-- | dotnet/Qpid.Buffer/SimpleByteBuffer.cs | 240 |
1 files changed, 120 insertions, 120 deletions
diff --git a/dotnet/Qpid.Buffer/SimpleByteBuffer.cs b/dotnet/Qpid.Buffer/SimpleByteBuffer.cs index d3b7245cb1..956c59aa45 100644 --- a/dotnet/Qpid.Buffer/SimpleByteBuffer.cs +++ b/dotnet/Qpid.Buffer/SimpleByteBuffer.cs @@ -1,120 +1,120 @@ -/*
- *
- * Licensed to the Apache Software Foundation (ASF) under one
- * or more contributor license agreements. See the NOTICE file
- * distributed with this work for additional information
- * regarding copyright ownership. The ASF licenses this file
- * to you under the Apache License, Version 2.0 (the
- * "License"); you may not use this file except in compliance
- * with the License. You may obtain a copy of the License at
- *
- * http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing,
- * software distributed under the License is distributed on an
- * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
- * KIND, either express or implied. See the License for the
- * specific language governing permissions and limitations
- * under the License.
- *
- */
-using System;
-
-namespace Apache.Qpid.Buffer
-{
- internal sealed class SimpleByteBuffer : ByteBuffer
- {
- private byte[] _buffer;
-
- public override int Capacity
- {
- get { return _buffer.Length; }
- }
-
- public override byte[] Array
- {
- get { return _buffer; }
- }
-
- /// <summary>
- /// Initialize a new instance with the desired size
- /// </summary>
- /// <param name="desiredSize">Initial Length of the array</param>
- internal SimpleByteBuffer(int desiredSize)
- {
- _buffer = new byte[desiredSize];
- Position = 0;
- Limit = Capacity;
- }
-
- /// <summary>
- /// Initialize a new instance with the data from
- /// an underlying array
- /// </summary>
- /// <param name="buffer">Initial data</param>
- /// <remarks>The original array is copied during construction and is not modified</remarks>
- internal SimpleByteBuffer(byte[] buffer)
- {
- _buffer = (byte[])buffer.Clone();
- // position at end
- Position = Limit = Capacity;
- }
-
- protected override void DoWrite(int position, byte value)
- {
- // available space is already handled by base class
- _buffer[position] = value;
- }
-
- protected override void DoWrite(int position, byte[] src, int offset, int length)
- {
- // available space is already handled by base class
- for ( int i = 0; i < length; i++ )
- {
- _buffer[position+i] = src[offset+i];
- }
- }
-
- protected override byte DoReadByte(int position)
- {
- return _buffer[position];
- }
-
- protected override void DoReadBytes(int position, byte[] dest, int offset, int length)
- {
- System.Array.Copy(_buffer, position, dest, offset, length);
- }
-
- protected override void DoCompact()
- {
- if ( Remaining > 0 )
- {
- if ( Position > 0 )
- {
- System.Array.Copy(_buffer, Position, _buffer, 0, Remaining);
- }
- Position = Remaining;
- } else
- {
- Position = 0;
- }
- Limit = Capacity;
- }
-
- protected override void DoResize(int newSize)
- {
- if ( newSize < Capacity )
- throw new NotSupportedException("Cannot resize a buffer to make it smaller");
-
- int newCapacity = 1;
- while ( newCapacity < newSize )
- {
- newCapacity <<= 1;
- }
-
- byte[] newBuffer = new byte[newCapacity];
- System.Array.Copy(_buffer, newBuffer, _buffer.Length);
- _buffer = newBuffer;
- }
- } // class SimpleByteBuffer
-}
+/* + * + * Licensed to the Apache Software Foundation (ASF) under one + * or more contributor license agreements. See the NOTICE file + * distributed with this work for additional information + * regarding copyright ownership. The ASF licenses this file + * to you under the Apache License, Version 2.0 (the + * "License"); you may not use this file except in compliance + * with the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, + * software distributed under the License is distributed on an + * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY + * KIND, either express or implied. See the License for the + * specific language governing permissions and limitations + * under the License. + * + */ +using System; + +namespace Apache.Qpid.Buffer +{ + internal sealed class SimpleByteBuffer : ByteBuffer + { + private byte[] _buffer; + + public override int Capacity + { + get { return _buffer.Length; } + } + + public override byte[] Array + { + get { return _buffer; } + } + + /// <summary> + /// Initialize a new instance with the desired size + /// </summary> + /// <param name="desiredSize">Initial Length of the array</param> + internal SimpleByteBuffer(int desiredSize) + { + _buffer = new byte[desiredSize]; + Position = 0; + Limit = Capacity; + } + + /// <summary> + /// Initialize a new instance with the data from + /// an underlying array + /// </summary> + /// <param name="buffer">Initial data</param> + /// <remarks>The original array is copied during construction and is not modified</remarks> + internal SimpleByteBuffer(byte[] buffer) + { + _buffer = (byte[])buffer.Clone(); + // position at end + Position = Limit = Capacity; + } + + protected override void DoWrite(int position, byte value) + { + // available space is already handled by base class + _buffer[position] = value; + } + + protected override void DoWrite(int position, byte[] src, int offset, int length) + { + // available space is already handled by base class + for ( int i = 0; i < length; i++ ) + { + _buffer[position+i] = src[offset+i]; + } + } + + protected override byte DoReadByte(int position) + { + return _buffer[position]; + } + + protected override void DoReadBytes(int position, byte[] dest, int offset, int length) + { + System.Array.Copy(_buffer, position, dest, offset, length); + } + + protected override void DoCompact() + { + if ( Remaining > 0 ) + { + if ( Position > 0 ) + { + System.Array.Copy(_buffer, Position, _buffer, 0, Remaining); + } + Position = Remaining; + } else + { + Position = 0; + } + Limit = Capacity; + } + + protected override void DoResize(int newSize) + { + if ( newSize < Capacity ) + throw new NotSupportedException("Cannot resize a buffer to make it smaller"); + + int newCapacity = 1; + while ( newCapacity < newSize ) + { + newCapacity <<= 1; + } + + byte[] newBuffer = new byte[newCapacity]; + System.Array.Copy(_buffer, newBuffer, _buffer.Length); + _buffer = newBuffer; + } + } // class SimpleByteBuffer +} |