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/*
KeePass Password Safe - The Open-Source Password Manager
Copyright (C) 2003-2017 Dominik Reichl <dominik.reichl@t-online.de>
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
using System;
using System.Collections.Generic;
using System.IO;
using System.Text;
using KeePassLib.Utility;
namespace KeePassLib.Serialization
{
public sealed class BinaryReaderEx
{
private Stream m_s;
// private Encoding m_enc; // See constructor
private string m_strReadExcp; // May be null
public string ReadExceptionText
{
get { return m_strReadExcp; }
set { m_strReadExcp = value; }
}
private Stream m_sCopyTo = null;
/// <summary>
/// If this property is set to a non-null stream, all data that
/// is read from the input stream is automatically written to
/// the copy stream (before returning the read data).
/// </summary>
public Stream CopyDataTo
{
get { return m_sCopyTo; }
set { m_sCopyTo = value; }
}
public BinaryReaderEx(Stream input, Encoding encoding,
string strReadExceptionText)
{
if(input == null) throw new ArgumentNullException("input");
m_s = input;
// m_enc = encoding; // Not used yet
m_strReadExcp = strReadExceptionText;
}
public byte[] ReadBytes(int nCount)
{
try
{
byte[] pb = MemUtil.Read(m_s, nCount);
if((pb == null) || (pb.Length != nCount))
{
if(!string.IsNullOrEmpty(m_strReadExcp))
throw new EndOfStreamException(m_strReadExcp);
else throw new EndOfStreamException();
}
if(m_sCopyTo != null) m_sCopyTo.Write(pb, 0, pb.Length);
return pb;
}
catch(Exception)
{
if(!string.IsNullOrEmpty(m_strReadExcp))
throw new IOException(m_strReadExcp);
else throw;
}
}
public byte ReadByte()
{
byte[] pb = ReadBytes(1);
return pb[0];
}
}
}
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