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Initial commit — M3U playlist tool with MP3/AAC encoding

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poprhythm
2026-05-10 03:02:53 +00:00
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Backup/KeyedList.cs
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/*
Copyright (c) 2005, Marc Clifton
All rights reserved.
Redistribution and use in source and binary forms, with or without modification,
are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this list
of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice, this
list of conditions and the following disclaimer in the documentation and/or other
materials provided with the distribution.
* Neither the name of MyXaml nor the names of its contributors may be
used to endorse or promote products derived from this software without specific
prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
using System;
using System.Collections;
using System.Collections.Generic;
namespace Clifton.Collections.Generic
{
[Serializable]
public class KeyedList<K, V> : IDictionary<K, V>, IList<KeyValuePair<K, V>>
{
private Dictionary<K, V> objectTable = new Dictionary<K, V>();
private List<KeyValuePair<K, V>> objectList = new List<KeyValuePair<K, V>>();
/// <summary>
/// Returns false.
/// </summary>
public bool IsReadOnly
{
get { return false; }
}
/// <summary>
/// Returns the number of entries in the KeyedList.
/// </summary>
public int Count
{
get { return objectList.Count; }
}
/// <summary>
/// Get/Set the value at the specified index.
/// </summary>
/// <param name="idx">The index.</param>
/// <returns>The value.</returns>
public KeyValuePair<K, V> this[int idx]
{
get
{
if (idx < 0 || idx >= Count)
{
throw new ArgumentOutOfRangeException("index");
}
return objectList[idx];
}
set
{
if (idx < 0 || idx >= Count)
{
throw new ArgumentOutOfRangeException("index");
}
objectList[idx] = value;
objectTable[value.Key] = value.Value;
}
}
/// <summary>
/// Get/Set the value associated with the specified key.
/// </summary>
/// <param name="key">The key.</param>
/// <returns>The associated value.</returns>
public virtual V this[K key]
{
get { return objectTable[key]; }
set
{
if (objectTable.ContainsKey(key))
{
objectTable[key] = value;
objectList[IndexOf(key)] = new KeyValuePair<K, V>(key, value);
}
else
{
Add(key, value);
}
}
}
/// <summary>
/// Get an unordered list of keys.
/// This collection refers back to the keys in the original Dictionary.
/// </summary>
public ICollection<K> Keys
{
get { return objectTable.Keys; }
}
/// <summary>
/// Get an unordered list of values.
/// This collection refers back to the values in the original Dictionary.
/// </summary>
public ICollection<V> Values
{
get { return objectTable.Values; }
}
/// <summary>
/// Get the ordered list of keys.
/// This is a copy of the keys in the original Dictionary.
/// </summary>
public List<K> OrderedKeys
{
get
{
List<K> retList = new List<K>();
foreach (KeyValuePair<K, V> kvp in objectList)
{
retList.Add(kvp.Key);
}
return retList;
}
}
/// <summary>
/// Get the ordered list of values.
/// This is a copy of the values in the original Dictionary.
/// </summary>
public List<V> OrderedValues
{
get
{
List<V> retList = new List<V>();
foreach (KeyValuePair<K, V> kvp in objectList)
{
retList.Add(kvp.Value);
}
return retList;
}
}
/// <summary>
/// Returns the key at the specified index.
/// </summary>
/// <param name="idx">The index.</param>
/// <returns>The key at the index.</returns>
public K GetKey(int idx)
{
if (idx < 0 || idx >= Count)
{
throw new ArgumentOutOfRangeException("index");
}
return objectList[idx].Key;
}
/// <summary>
/// Returns the value at the specified index.
/// </summary>
/// <param name="idx">The index.</param>
/// <returns>The value at the index.</returns>
public V GetValue(int idx)
{
if (idx < 0 || idx >= Count)
{
throw new ArgumentOutOfRangeException("index");
}
return objectList[idx].Value;
}
/// <summary>
/// Get the index of a particular key.
/// </summary>
/// <param name="key">The key to find the index of.</param>
/// <returns>The index of the key, or -1 if not found.</returns>
public int IndexOf(K key)
{
int ret = -1;
for (int i = 0; i < objectList.Count; i++)
{
if (objectList[i].Key.Equals(key))
{
ret = i;
break;
}
}
return ret;
}
/// <summary>
/// Given the key-value pair, find the index.
/// </summary>
/// <param name="kvp">The key-value pair.</param>
/// <returns>The index, or -1 if not found.</returns>
public int IndexOf(KeyValuePair<K, V> kvp)
{
return IndexOf(kvp.Key);
}
/// <summary>
/// Gets the Dictionary class backing the KeyedList.
/// </summary>
public Dictionary<K, V> ObjectTable
{
get { return objectTable; }
}
/// <summary>
/// Clears all entries in the KeyedList.
/// </summary>
public void Clear()
{
objectTable.Clear();
objectList.Clear();
}
/// <summary>
/// Test if the KeyedList contains the key.
/// </summary>
/// <param name="key">The key.</param>
/// <returns>True if the key is found.</returns>
public bool ContainsKey(K key)
{
return objectTable.ContainsKey(key);
}
/// <summary>
/// Test if the KeyedList contains the key in the key-value pair.
/// </summary>
/// <param name="kvp">The key-value pair.</param>
/// <returns>True if the key is found.</returns>
public bool Contains(KeyValuePair<K, V> kvp)
{
return objectTable.ContainsKey(kvp.Key);
}
/// <summary>
/// Adds a key-value pair to the KeyedList.
/// </summary>
/// <param name="key">The key.</param>
/// <param name="value">The associated value.</param>
public void Add(K key, V value)
{
objectTable.Add(key, value);
objectList.Add(new KeyValuePair<K, V>(key, value));
}
/// <summary>
/// Adds a key-value pair to the KeyedList.
/// </summary>
/// <param name="kvp">The KeyValuePair instance.</param>
public void Add(KeyValuePair<K, V> kvp)
{
Add(kvp.Key, kvp.Value);
}
/// <summary>
/// Copy the entire key-value pairs to the KeyValuePair array, starting
/// at the specified index of the target array. The array is populated
/// as an ordered list.
/// </summary>
/// <param name="kvpa">The KeyValuePair array.</param>
/// <param name="idx">The position to start the copy.</param>
public void CopyTo(KeyValuePair<K, V>[] kvpa, int idx)
{
objectList.CopyTo(kvpa, idx);
}
/// <summary>
/// Insert the key-value at the specified index.
/// </summary>
/// <param name="idx">The zero-based insert point.</param>
/// <param name="key">The key.</param>
/// <param name="value">The value.</param>
public void Insert(int idx, K key, V value)
{
if ((idx < 0) || (idx > Count))
{
throw new ArgumentOutOfRangeException("index");
}
objectTable.Add(key, value);
objectList.Insert(idx, new KeyValuePair<K, V>(key, value));
}
/// <summary>
/// Insert the key-value pair at the specified index location.
/// </summary>
/// <param name="idx">The key.</param>
/// <param name="kvp">The value.</param>
public void Insert(int idx, KeyValuePair<K, V> kvp)
{
if ((idx < 0) || (idx > Count))
{
throw new ArgumentOutOfRangeException("index");
}
objectTable.Add(kvp.Key, kvp.Value);
objectList.Insert(idx, kvp);
}
/// <summary>
/// Remove the entry.
/// </summary>
/// <param name="key">The key identifying the key-value pair.</param>
/// <returns>True if removed.</returns>
public bool Remove(K key)
{
bool found = objectTable.Remove(key);
if (found)
{
objectList.RemoveAt(IndexOf(key));
}
return found;
}
/// <summary>
/// Remove the key in the specified KeyValuePair instance. The Value
/// property is ignored.
/// </summary>
/// <param name="kvp">The key-value identifying the entry.</param>
/// <returns>True if removed.</returns>
public bool Remove(KeyValuePair<K, V> kvp)
{
return Remove(kvp.Key);
}
/// <summary>
/// Remove the entry at the specified index.
/// </summary>
/// <param name="idx">The index to the entry to be removed.</param>
public void RemoveAt(int idx)
{
if ((idx < 0) || (idx >= Count))
{
throw new ArgumentOutOfRangeException("index");
}
objectTable.Remove(objectList[idx].Key);
objectList.RemoveAt(idx);
}
/// <summary>
/// Attempt to get the value, given the key, without throwing an exception if not found.
/// </summary>
/// <param name="key">The key indentifying the entry.</param>
/// <param name="val">The value, if found.</param>
/// <returns>True if found.</returns>
public bool TryGetValue(K key, out V val)
{
return objectTable.TryGetValue(key, out val);
}
/// <summary>
/// Returns an ordered System.Collections KeyValuePair objects.
/// </summary>
IEnumerator IEnumerable.GetEnumerator()
{
return objectList.GetEnumerator();
}
/// <summary>
/// Returns an ordered KeyValuePair enumerator.
/// </summary>
IEnumerator<KeyValuePair<K, V>> IEnumerable<KeyValuePair<K, V>>.GetEnumerator()
{
return objectList.GetEnumerator();
}
}
}