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