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//------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//------------------------------------------------------------
#pragma warning disable 1634, 1691
namespace System.ServiceModel.Dispatcher
{
using System;
using System.Collections;
using System.ComponentModel;
using System.Diagnostics;
using System.Diagnostics.CodeAnalysis;
using System.Globalization;
using System.Reflection;
using System.Runtime;
using System.Runtime.InteropServices;
using System.ServiceModel;
using System.Xml;
// Thread Safety: This class is thread safe
public class QueryStringConverter
{
Hashtable defaultSupportedQueryStringTypes;
// the cache does not have a quota since it is per endpoint and is
// bounded by the number of types in the contract at the endpoint
Hashtable typeConverterCache;
public QueryStringConverter()
{
this.defaultSupportedQueryStringTypes = new Hashtable();
this.defaultSupportedQueryStringTypes.Add(typeof(Byte), null);
this.defaultSupportedQueryStringTypes.Add(typeof(SByte), null);
this.defaultSupportedQueryStringTypes.Add(typeof(Int16), null);
this.defaultSupportedQueryStringTypes.Add(typeof(Int32), null);
this.defaultSupportedQueryStringTypes.Add(typeof(Int64), null);
this.defaultSupportedQueryStringTypes.Add(typeof(UInt16), null);
this.defaultSupportedQueryStringTypes.Add(typeof(UInt32), null);
this.defaultSupportedQueryStringTypes.Add(typeof(UInt64), null);
this.defaultSupportedQueryStringTypes.Add(typeof(Single), null);
this.defaultSupportedQueryStringTypes.Add(typeof(Double), null);
this.defaultSupportedQueryStringTypes.Add(typeof(Boolean), null);
this.defaultSupportedQueryStringTypes.Add(typeof(Char), null);
this.defaultSupportedQueryStringTypes.Add(typeof(Decimal), null);
this.defaultSupportedQueryStringTypes.Add(typeof(String), null);
this.defaultSupportedQueryStringTypes.Add(typeof(Object), null);
this.defaultSupportedQueryStringTypes.Add(typeof(DateTime), null);
this.defaultSupportedQueryStringTypes.Add(typeof(TimeSpan), null);
this.defaultSupportedQueryStringTypes.Add(typeof(byte[]), null);
this.defaultSupportedQueryStringTypes.Add(typeof(Guid), null);
this.defaultSupportedQueryStringTypes.Add(typeof(Uri), null);
this.defaultSupportedQueryStringTypes.Add(typeof(DateTimeOffset), null);
this.typeConverterCache = new Hashtable();
}
public virtual bool CanConvert(Type type)
{
if (this.defaultSupportedQueryStringTypes.ContainsKey(type))
{
return true;
}
// otherwise check if its an enum
if (typeof(Enum).IsAssignableFrom(type))
{
return true;
}
// check if there's a typeconverter defined on the type
return (GetStringConverter(type) != null);
}
public virtual object ConvertStringToValue(string parameter, Type parameterType)
{
if (parameterType == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("parameterType");
}
switch (Type.GetTypeCode(parameterType))
{
case TypeCode.Byte:
return parameter == null ? default(Byte) : XmlConvert.ToByte(parameter);
case TypeCode.SByte:
return parameter == null ? default(SByte) : XmlConvert.ToSByte(parameter);
case TypeCode.Int16:
return parameter == null ? default(Int16) : XmlConvert.ToInt16(parameter);
case TypeCode.Int32:
{
if (typeof(Enum).IsAssignableFrom(parameterType))
{
return Enum.Parse(parameterType, parameter, true);
}
else
{
return parameter == null ? default(Int32) : XmlConvert.ToInt32(parameter);
}
}
case TypeCode.Int64:
return parameter == null ? default(Int64) : XmlConvert.ToInt64(parameter);
case TypeCode.UInt16:
return parameter == null ? default(UInt16) : XmlConvert.ToUInt16(parameter);
case TypeCode.UInt32:
return parameter == null ? default(UInt32) : XmlConvert.ToUInt32(parameter);
case TypeCode.UInt64:
return parameter == null ? default(UInt64) : XmlConvert.ToUInt64(parameter);
case TypeCode.Single:
return parameter == null ? default(Single) : XmlConvert.ToSingle(parameter);
case TypeCode.Double:
return parameter == null ? default(Double) : XmlConvert.ToDouble(parameter);
case TypeCode.Char:
return parameter == null ? default(Char) : XmlConvert.ToChar(parameter);
case TypeCode.Decimal:
return parameter == null ? default(Decimal) : XmlConvert.ToDecimal(parameter);
case TypeCode.Boolean:
return parameter == null ? default(Boolean) : Convert.ToBoolean(parameter, CultureInfo.InvariantCulture);
case TypeCode.String:
return parameter;
case TypeCode.DateTime:
return parameter == null ? default(DateTime) : DateTime.Parse(parameter, CultureInfo.InvariantCulture, DateTimeStyles.RoundtripKind);
default:
{
if (parameterType == typeof(TimeSpan))
{
// support the XML as well as default way of representing timespans
TimeSpan result;
if (!TimeSpan.TryParse(parameter, out result))
{
result = parameter == null ? default(TimeSpan) : XmlConvert.ToTimeSpan(parameter);
}
return result;
}
else if (parameterType == typeof(Guid))
{
return parameter == null ? default(Guid) : XmlConvert.ToGuid(parameter);
}
else if (parameterType == typeof(DateTimeOffset))
{
return (parameter == null) ? default(DateTimeOffset) : DateTimeOffset.Parse(parameter, CultureInfo.InvariantCulture, DateTimeStyles.RoundtripKind | DateTimeStyles.AllowWhiteSpaces);
}
else if (parameterType == typeof(byte[]))
{
return (!string.IsNullOrEmpty(parameter)) ? Convert.FromBase64String(parameter) : new byte[] { };
}
else if (parameterType == typeof(Uri))
{
return (!string.IsNullOrEmpty(parameter)) ? new Uri(parameter, UriKind.RelativeOrAbsolute) : null;
}
else if (parameterType == typeof(object))
{
return parameter;
}
else
{
TypeConverter stringConverter = GetStringConverter(parameterType);
if (stringConverter == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new NotSupportedException(
SR2.GetString(
SR2.TypeNotSupportedByQueryStringConverter,
parameterType.ToString(), this.GetType().Name)));
}
return stringConverter.ConvertFromInvariantString(parameter);
}
}
}
}
public virtual string ConvertValueToString(object parameter, Type parameterType)
{
if (parameterType == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("parameterType");
}
if (parameterType.IsValueType && parameter == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperArgumentNull("parameter");
}
switch (Type.GetTypeCode(parameterType))
{
case TypeCode.Byte:
return XmlConvert.ToString((Byte) parameter);
case TypeCode.SByte:
return XmlConvert.ToString((SByte) parameter);
case TypeCode.Int16:
return XmlConvert.ToString((Int16) parameter);
case TypeCode.Int32:
{
if (typeof(Enum).IsAssignableFrom(parameterType))
{
return Enum.Format(parameterType, parameter, "G");
}
else
{
return XmlConvert.ToString((int) parameter);
}
}
case TypeCode.Int64:
return XmlConvert.ToString((Int64) parameter);
case TypeCode.UInt16:
return XmlConvert.ToString((UInt16) parameter);
case TypeCode.UInt32:
return XmlConvert.ToString((uint) parameter);
case TypeCode.UInt64:
return XmlConvert.ToString((UInt64) parameter);
case TypeCode.Single:
return XmlConvert.ToString((Single) parameter);
case TypeCode.Double:
return XmlConvert.ToString((double) parameter);
case TypeCode.Char:
return XmlConvert.ToString((char) parameter);
case TypeCode.Decimal:
return XmlConvert.ToString((decimal) parameter);
case TypeCode.Boolean:
return XmlConvert.ToString((bool) parameter);
case TypeCode.String:
return (string) parameter;
case TypeCode.DateTime:
return XmlConvert.ToString((DateTime) parameter, XmlDateTimeSerializationMode.RoundtripKind);
default:
{
if (parameterType == typeof(TimeSpan))
{
return XmlConvert.ToString((TimeSpan) parameter);
}
else if (parameterType == typeof(Guid))
{
return XmlConvert.ToString((Guid) parameter);
}
else if (parameterType == typeof(DateTimeOffset))
{
return XmlConvert.ToString((DateTimeOffset) parameter);
}
else if (parameterType == typeof(byte[]))
{
return (parameter != null) ? Convert.ToBase64String((byte[]) parameter, Base64FormattingOptions.None) : null;
}
else if (parameterType == typeof(Uri) || parameterType == typeof(object))
{
// URI or object
return (parameter != null) ? Convert.ToString(parameter, CultureInfo.InvariantCulture) : null;
}
else
{
TypeConverter stringConverter = GetStringConverter(parameterType);
if (stringConverter == null)
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(new NotSupportedException(
SR2.GetString(
SR2.TypeNotSupportedByQueryStringConverter,
parameterType.ToString(), this.GetType().Name)));
}
else
{
return stringConverter.ConvertToInvariantString(parameter);
}
}
}
}
}
// hash table is safe for multiple readers single writer
[SuppressMessage("Reliability", "Reliability104:CaughtAndHandledExceptionsRule", Justification = "The exception is traced in the finally clause")]
TypeConverter GetStringConverter(Type parameterType)
{
if (this.typeConverterCache.ContainsKey(parameterType))
{
return (TypeConverter) this.typeConverterCache[parameterType];
}
TypeConverterAttribute[] typeConverterAttrs = parameterType.GetCustomAttributes(typeof(TypeConverterAttribute), true) as TypeConverterAttribute[];
if (typeConverterAttrs != null)
{
foreach (TypeConverterAttribute converterAttr in typeConverterAttrs)
{
Type converterType = Type.GetType(converterAttr.ConverterTypeName, false, true);
if (converterType != null)
{
TypeConverter converter = null;
Exception handledException = null;
try
{
converter = (TypeConverter) Activator.CreateInstance(converterType);
}
catch (TargetInvocationException e)
{
handledException = e;
}
catch (MemberAccessException e)
{
handledException = e;
}
catch (TypeLoadException e)
{
handledException = e;
}
catch (COMException e)
{
handledException = e;
}
catch (InvalidComObjectException e)
{
handledException = e;
}
finally
{
if (handledException != null)
{
if (Fx.IsFatal(handledException))
{
throw DiagnosticUtility.ExceptionUtility.ThrowHelperError(handledException);
}
DiagnosticUtility.TraceHandledException(handledException, TraceEventType.Warning);
}
}
if (converter == null)
{
continue;
}
if (converter.CanConvertTo(typeof(string)) && converter.CanConvertFrom(typeof(string)))
{
this.typeConverterCache.Add(parameterType, converter);
return converter;
}
}
}
}
return null;
}
}
}
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