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InputStreamDataInput.cs
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InputStreamDataInput.cs
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using System;
using System.IO;
namespace Lucene.Net.Store
{
/*
* 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.
*/
/// <summary>
/// A <see cref="DataInput"/> wrapping a plain <see cref="Stream"/>.
/// </summary>
public class InputStreamDataInput : DataInput, IDisposable
{
private BinaryReader _reader;
public InputStreamDataInput(Stream @is)
{
this._reader = new BinaryReader(@is);
}
public override byte ReadByte()
{
int v = _reader.ReadByte();
if (v == -1)
{
throw EOFException.Create();
}
return (byte)v;
}
public override void ReadBytes(byte[] b, int offset, int len)
{
while (len > 0)
{
int cnt = _reader.Read(b, offset, len);
if (cnt < 0)
{
// Partially read the input, but no more data available in the stream.
throw EOFException.Create();
}
len -= cnt;
offset += cnt;
}
}
public void Dispose()
{
Dispose(true);
GC.SuppressFinalize(this);
}
private bool disposed = false;
protected virtual void Dispose(bool disposing)
{
if (!disposed)
{
if (disposing)
{
_reader.Dispose();
}
_reader = null;
disposed = true;
}
}
}
}