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/*
KeePass Password Safe - The Open-Source Password Manager
Copyright (C) 2003-2012 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;
using System.Collections.Generic;
using System.Text;
using System.Diagnostics;
using KeePassLib.Interfaces;
using KeePassLib.Security;
using KeePassLib.Utility;
#if KeePassLibSD
using KeePassLibSD;
#endif
namespace KeePassLib.Collections
{
/// <summary>
/// A list of <c>ProtectedBinary</c> objects (dictionary).
/// </summary>
public sealed class ProtectedBinaryDictionary :
IDeepCloneable<ProtectedBinaryDictionary>,
IEnumerable<KeyValuePair<string, ProtectedBinary>>
{
private SortedDictionary<string, ProtectedBinary> m_vBinaries =
new SortedDictionary<string, ProtectedBinary>();
/// <summary>
/// Get the number of binaries in this entry.
/// </summary>
public uint UCount
{
get { return (uint)m_vBinaries.Count; }
}
/// <summary>
/// Construct a new list of protected binaries.
/// </summary>
public ProtectedBinaryDictionary()
{
}
IEnumerator IEnumerable.GetEnumerator()
{
return m_vBinaries.GetEnumerator();
}
public IEnumerator<KeyValuePair<string, ProtectedBinary>> GetEnumerator()
{
return m_vBinaries.GetEnumerator();
}
public void Clear()
{
m_vBinaries.Clear();
}
/// <summary>
/// Clone the current <c>ProtectedBinaryList</c> object, including all
/// stored protected strings.
/// </summary>
/// <returns>New <c>ProtectedBinaryList</c> object.</returns>
public ProtectedBinaryDictionary CloneDeep()
{
ProtectedBinaryDictionary plNew = new ProtectedBinaryDictionary();
foreach(KeyValuePair<string, ProtectedBinary> kvpBin in m_vBinaries)
{
// ProtectedBinary objects are immutable
plNew.Set(kvpBin.Key, kvpBin.Value);
}
return plNew;
}
public bool EqualsDictionary(ProtectedBinaryDictionary dict)
{
if(dict == null) { Debug.Assert(false); return false; }
if(m_vBinaries.Count != dict.m_vBinaries.Count) return false;
foreach(KeyValuePair<string, ProtectedBinary> kvp in m_vBinaries)
{
ProtectedBinary pb = dict.Get(kvp.Key);
if(pb == null) return false;
if(!pb.Equals(kvp.Value)) return false;
}
return true;
}
/// <summary>
/// Get one of the stored binaries.
/// </summary>
/// <param name="strName">Binary identifier.</param>
/// <returns>Protected binary. If the binary identified by
/// <paramref name="strName" /> cannot be found, the function
/// returns <c>null</c>.</returns>
/// <exception cref="System.ArgumentNullException">Thrown if the input
/// parameter is <c>null</c>.</exception>
public ProtectedBinary Get(string strName)
{
Debug.Assert(strName != null); if(strName == null) throw new ArgumentNullException("strName");
ProtectedBinary pb;
if(m_vBinaries.TryGetValue(strName, out pb)) return pb;
return null;
}
/// <summary>
/// Set a binary object.
/// </summary>
/// <param name="strField">Identifier of the binary field to modify.</param>
/// <param name="pbNewValue">New value. This parameter must not be <c>null</c>.</param>
/// <exception cref="System.ArgumentNullException">Thrown if any of the input
/// parameters is <c>null</c>.</exception>
public void Set(string strField, ProtectedBinary pbNewValue)
{
Debug.Assert(strField != null); if(strField == null) throw new ArgumentNullException("strField");
Debug.Assert(pbNewValue != null); if(pbNewValue == null) throw new ArgumentNullException("pbNewValue");
m_vBinaries[strField] = pbNewValue;
}
/// <summary>
/// Remove a binary object.
/// </summary>
/// <param name="strField">Identifier of the binary field to remove.</param>
/// <returns>Returns <c>true</c> if the object has been successfully
/// removed, otherwise <c>false</c>.</returns>
/// <exception cref="System.ArgumentNullException">Thrown if the input parameter
/// is <c>null</c>.</exception>
public bool Remove(string strField)
{
Debug.Assert(strField != null); if(strField == null) throw new ArgumentNullException("strField");
return m_vBinaries.Remove(strField);
}
public string KeysToString()
{
if(m_vBinaries.Count == 0) return string.Empty;
StringBuilder sb = new StringBuilder();
foreach(KeyValuePair<string, ProtectedBinary> kvp in m_vBinaries)
{
if(sb.Length > 0) sb.Append(", ");
sb.Append(kvp.Key);
}
return sb.ToString();
}
}
}
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