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//----------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//----------------------------------------------------------------
namespace System.ServiceModel.Channels
{
using System;
using System.Collections;
using System.Collections.Generic;
using System.Collections.ObjectModel;
using System.Runtime;
[Serializable]
class ContextDictionary : IDictionary<string, string>
{
static ContextDictionary empty;
IDictionary<string, string> dictionaryStore;
public ContextDictionary()
{
this.dictionaryStore = new Dictionary<string, string>();
}
public ContextDictionary(IDictionary<string, string> context)
{
this.dictionaryStore = new Dictionary<string, string>();
if (context != null)
{
bool ignoreValidation = context is ContextDictionary;
foreach (KeyValuePair<string, string> pair in context)
{
if (ignoreValidation)
{
this.dictionaryStore.Add(pair);
}
else
{
this.Add(pair);
}
}
}
}
internal static ContextDictionary Empty
{
get
{
if (empty == null)
{
ContextDictionary localEmpty = new ContextDictionary();
localEmpty.dictionaryStore = new ReadOnlyDictionaryInternal<string, string>(new Dictionary<string, string>(0));
empty = localEmpty;
}
return empty;
}
}
public int Count
{
get { return this.dictionaryStore.Count; }
}
public bool IsReadOnly
{
get { return this.dictionaryStore.IsReadOnly; }
}
public ICollection<string> Keys
{
get { return this.dictionaryStore.Keys; }
}
public ICollection<string> Values
{
get { return this.dictionaryStore.Values; }
}
public string this[string key]
{
get
{
ValidateKeyValueSpace(key);
return this.dictionaryStore[key];
}
set
{
if (value == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("value");
}
ValidateKeyValueSpace(key);
this.dictionaryStore[key] = value;
}
}
public void Add(string key, string value)
{
if (value == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("value");
}
ValidateKeyValueSpace(key);
this.dictionaryStore.Add(key, value);
}
public void Add(KeyValuePair<string, string> item)
{
if (item.Key == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("item.Key");
}
if (item.Value == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("item.Value");
}
ValidateKeyValueSpace(item.Key);
this.dictionaryStore.Add(item);
}
public void Clear()
{
this.dictionaryStore.Clear();
}
public bool Contains(KeyValuePair<string, string> item)
{
if (item.Key == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("item.Key");
}
if (item.Value == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("item.Value");
}
ValidateKeyValueSpace(item.Key);
return this.dictionaryStore.Contains(item);
}
public bool ContainsKey(string key)
{
ValidateKeyValueSpace(key);
return this.dictionaryStore.ContainsKey(key);
}
public void CopyTo(KeyValuePair<string, string>[] array, int arrayIndex)
{
this.dictionaryStore.CopyTo(array, arrayIndex);
}
public IEnumerator<KeyValuePair<string, string>> GetEnumerator()
{
return this.dictionaryStore.GetEnumerator();
}
IEnumerator IEnumerable.GetEnumerator()
{
return ((IEnumerable)this.dictionaryStore).GetEnumerator();
}
public bool Remove(string key)
{
ValidateKeyValueSpace(key);
return this.dictionaryStore.Remove(key);
}
public bool Remove(KeyValuePair<string, string> item)
{
if (item.Key == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("item.Key");
}
if (item.Value == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("item.Value");
}
ValidateKeyValueSpace(item.Key);
return this.dictionaryStore.Remove(item);
}
public bool TryGetValue(string key, out string value)
{
ValidateKeyValueSpace(key);
return this.dictionaryStore.TryGetValue(key, out value);
}
internal static bool TryValidateKeyValueSpace(string key)
{
if (string.IsNullOrEmpty(key))
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("key");
}
for (int counter = 0; counter < key.Length; ++counter)
{
char currentCharacter = key[counter];
if (!IsLetterOrDigit(currentCharacter) && currentCharacter != '-' && currentCharacter != '_' && currentCharacter != '.')
{
return false;
}
}
return true;
}
static bool IsLetterOrDigit(char c)
{
return (('A' <= c) && (c <= 'Z')) ||
(('a' <= c) && (c <= 'z')) ||
(('0' <= c) && (c <= '9'));
}
static void ValidateKeyValueSpace(string key)
{
if (!TryValidateKeyValueSpace(key))
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new ArgumentOutOfRangeException("key", SR.GetString(SR.InvalidCookieContent, key)));
}
}
}
}
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