?? patternlayoutconverter.cs
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#region Copyright & License
//
// Copyright 2001-2005 The Apache Software Foundation
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
#endregion
using System;
using System.Text;
using log4net.Layout;
namespace log4net.Util.TypeConverters
{
/// <summary>
/// Supports conversion from string to <see cref="PatternLayout"/> type.
/// </summary>
/// <remarks>
/// <para>
/// Supports conversion from string to <see cref="PatternLayout"/> type.
/// </para>
/// <para>
/// The string is used as the <see cref="PatternLayout.ConversionPattern"/>
/// of the <see cref="PatternLayout"/>.
/// </para>
/// </remarks>
/// <seealso cref="ConverterRegistry"/>
/// <seealso cref="IConvertFrom"/>
/// <seealso cref="IConvertTo"/>
/// <author>Nicko Cadell</author>
internal class PatternLayoutConverter : IConvertFrom
{
#region Implementation of IConvertFrom
/// <summary>
/// Can the source type be converted to the type supported by this object
/// </summary>
/// <param name="sourceType">the type to convert</param>
/// <returns>true if the conversion is possible</returns>
/// <remarks>
/// <para>
/// Returns <c>true</c> if the <paramref name="sourceType"/> is
/// the <see cref="String"/> type.
/// </para>
/// </remarks>
public bool CanConvertFrom(System.Type sourceType)
{
return (sourceType == typeof(string));
}
/// <summary>
/// Overrides the ConvertFrom method of IConvertFrom.
/// </summary>
/// <param name="source">the object to convert to a PatternLayout</param>
/// <returns>the PatternLayout</returns>
/// <remarks>
/// <para>
/// Creates and returns a new <see cref="PatternLayout"/> using
/// the <paramref name="source"/> <see cref="String"/> as the
/// <see cref="PatternLayout.ConversionPattern"/>.
/// </para>
/// </remarks>
/// <exception cref="ConversionNotSupportedException">
/// The <paramref name="source"/> object cannot be converted to the
/// target type. To check for this condition use the <see cref="CanConvertFrom"/>
/// method.
/// </exception>
public object ConvertFrom(object source)
{
string str = source as string;
if (str != null)
{
return new PatternLayout(str);
}
throw ConversionNotSupportedException.Create(typeof(PatternLayout), source);
}
#endregion
}
}
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