| #region Apache License |
| // |
| // Licensed to the Apache Software Foundation (ASF) under one or more |
| // contributor license agreements. See the NOTICE file distributed with |
| // this work for additional information regarding copyright ownership. |
| // The ASF licenses this file to you 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; |
| #if NETSTANDARD1_3 |
| using System.Reflection; |
| #endif |
| using System.Text; |
| |
| using log4net.Util; |
| |
| namespace log4net.Util.TypeConverters |
| { |
| /// <summary> |
| /// Convert between string and <see cref="PatternString"/> |
| /// </summary> |
| /// <remarks> |
| /// <para> |
| /// Supports conversion from string to <see cref="PatternString"/> type, |
| /// and from a <see cref="PatternString"/> type to a string. |
| /// </para> |
| /// <para> |
| /// The string is used as the <see cref="PatternString.ConversionPattern"/> |
| /// of the <see cref="PatternString"/>. |
| /// </para> |
| /// </remarks> |
| /// <seealso cref="ConverterRegistry"/> |
| /// <seealso cref="IConvertFrom"/> |
| /// <seealso cref="IConvertTo"/> |
| /// <author>Nicko Cadell</author> |
| internal class PatternStringConverter : IConvertTo, IConvertFrom |
| { |
| #region Implementation of IConvertTo |
| |
| /// <summary> |
| /// Can the target type be converted to the type supported by this object |
| /// </summary> |
| /// <param name="targetType">A <see cref="Type"/> that represents the type you want to convert to</param> |
| /// <returns>true if the conversion is possible</returns> |
| /// <remarks> |
| /// <para> |
| /// Returns <c>true</c> if the <paramref name="targetType"/> is |
| /// assignable from a <see cref="String"/> type. |
| /// </para> |
| /// </remarks> |
| public bool CanConvertTo(Type targetType) |
| { |
| return (typeof(string).IsAssignableFrom(targetType)); |
| } |
| |
| /// <summary> |
| /// Converts the given value object to the specified type, using the arguments |
| /// </summary> |
| /// <param name="source">the object to convert</param> |
| /// <param name="targetType">The Type to convert the value parameter to</param> |
| /// <returns>the converted object</returns> |
| /// <remarks> |
| /// <para> |
| /// Uses the <see cref="M:PatternString.Format()"/> method to convert the |
| /// <see cref="PatternString"/> argument to a <see cref="String"/>. |
| /// </para> |
| /// </remarks> |
| /// <exception cref="ConversionNotSupportedException"> |
| /// The <paramref name="source"/> object cannot be converted to the |
| /// <paramref name="targetType"/>. To check for this condition use the |
| /// <see cref="CanConvertTo"/> method. |
| /// </exception> |
| public object ConvertTo(object source, Type targetType) |
| { |
| PatternString patternString = source as PatternString; |
| if (patternString != null && CanConvertTo(targetType)) |
| { |
| return patternString.Format(); |
| } |
| throw ConversionNotSupportedException.Create(targetType, source); |
| } |
| |
| #endregion |
| |
| #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 PatternString</param> |
| /// <returns>the PatternString</returns> |
| /// <remarks> |
| /// <para> |
| /// Creates and returns a new <see cref="PatternString"/> using |
| /// the <paramref name="source"/> <see cref="String"/> as the |
| /// <see cref="PatternString.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 PatternString(str); |
| } |
| throw ConversionNotSupportedException.Create(typeof(PatternString), source); |
| } |
| |
| #endregion |
| } |
| } |