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/*
KeePass Password Safe - The Open-Source Password Manager
Copyright (C) 2003-2024 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.Diagnostics;
using System.Text;
using KeePassLib.Interfaces;
using KeePassLib.Utility;
#if KeePassLibSD
using KeePassLibSD;
#endif
namespace KeePassLib.Collections
{
public sealed class StringDictionaryEx : IDeepCloneable<StringDictionaryEx>,
IEnumerable<KeyValuePair<string, string>>, IEquatable<StringDictionaryEx>
{
private readonly SortedDictionary<string, string> m_d =
new SortedDictionary<string, string>();
// Non-null if and only if last mod. times should be remembered
private Dictionary<string, DateTime> m_dLastMod = null;
public int Count
{
get { return m_d.Count; }
}
public StringDictionaryEx()
{
}
internal StringDictionaryEx(bool bRememberLastMod)
{
if(bRememberLastMod) m_dLastMod = new Dictionary<string, DateTime>();
}
IEnumerator IEnumerable.GetEnumerator()
{
return m_d.GetEnumerator();
}
public IEnumerator<KeyValuePair<string, string>> GetEnumerator()
{
return m_d.GetEnumerator();
}
public StringDictionaryEx CloneDeep()
{
StringDictionaryEx sdNew = new StringDictionaryEx();
foreach(KeyValuePair<string, string> kvp in m_d)
sdNew.m_d[kvp.Key] = kvp.Value;
if(m_dLastMod != null)
sdNew.m_dLastMod = new Dictionary<string, DateTime>(m_dLastMod);
Debug.Assert(Equals(sdNew));
return sdNew;
}
public override int GetHashCode()
{
int h = ((m_dLastMod != null) ? 0x208F391C : 0);
foreach(KeyValuePair<string, string> kvp in m_d)
h += kvp.Key.GetHashCode() + kvp.Value.GetHashCode();
return h;
}
public override bool Equals(object obj)
{
return Equals(obj as StringDictionaryEx);
}
public bool Equals(StringDictionaryEx sdOther)
{
if(object.ReferenceEquals(sdOther, this)) return true;
if(object.ReferenceEquals(sdOther, null)) { Debug.Assert(false); return false; }
if(m_d.Count != sdOther.m_d.Count) return false;
foreach(KeyValuePair<string, string> kvp in sdOther.m_d)
{
string str = Get(kvp.Key);
if((str == null) || (str != kvp.Value)) return false;
}
int cLastModT = ((m_dLastMod != null) ? m_dLastMod.Count : -1);
int cLastModO = ((sdOther.m_dLastMod != null) ? sdOther.m_dLastMod.Count : -1);
if(cLastModT != cLastModO) return false;
if(m_dLastMod != null)
{
foreach(KeyValuePair<string, DateTime> kvp in sdOther.m_dLastMod)
{
DateTime? odt = GetLastModificationTime(kvp.Key);
if(!odt.HasValue) return false;
if(!TimeUtil.EqualsFloor(odt.Value, kvp.Value)) return false;
}
}
return true;
}
public string Get(string strName)
{
if(strName == null) { Debug.Assert(false); throw new ArgumentNullException("strName"); }
string str;
m_d.TryGetValue(strName, out str);
return str;
}
internal DateTime? GetLastModificationTime(string strName)
{
if(strName == null) { Debug.Assert(false); throw new ArgumentNullException("strName"); }
if(m_dLastMod == null) return null;
DateTime dt;
if(m_dLastMod.TryGetValue(strName, out dt)) return dt;
return null;
}
public bool Exists(string strName)
{
if(strName == null) { Debug.Assert(false); throw new ArgumentNullException("strName"); }
return m_d.ContainsKey(strName);
}
public void Set(string strName, string strValue)
{
if(strName == null) { Debug.Assert(false); throw new ArgumentNullException("strName"); }
if(strValue == null) { Debug.Assert(false); throw new ArgumentNullException("strValue"); }
m_d[strName] = strValue;
if(m_dLastMod != null) m_dLastMod[strName] = DateTime.UtcNow;
}
internal void Set(string strName, string strValue, DateTime? odtLastMod)
{
if(strName == null) { Debug.Assert(false); throw new ArgumentNullException("strName"); }
if(strValue == null) { Debug.Assert(false); throw new ArgumentNullException("strValue"); }
m_d[strName] = strValue;
if(m_dLastMod != null)
{
if(odtLastMod.HasValue) m_dLastMod[strName] = odtLastMod.Value;
else m_dLastMod.Remove(strName);
}
}
public bool Remove(string strName)
{
if(strName == null) { Debug.Assert(false); throw new ArgumentNullException("strName"); }
if(m_dLastMod != null) m_dLastMod.Remove(strName);
return m_d.Remove(strName);
}
}
}
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