103 lines
3.7 KiB
C#
103 lines
3.7 KiB
C#
#region License
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// <copyright file="PropertyWriter.cs" company="Giacomo Stelluti Scala">
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// Copyright 2015-2013 Giacomo Stelluti Scala
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// </copyright>
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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#endregion
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#region Using Directives
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using System;
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using System.ComponentModel;
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using System.Diagnostics.CodeAnalysis;
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using System.Globalization;
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using System.Reflection;
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#endregion
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namespace CommandLine.Parsing
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{
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/// <summary>
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/// Encapsulates property writing primitives.
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/// </summary>
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internal sealed class PropertyWriter
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{
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private readonly CultureInfo _parsingCulture;
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public PropertyWriter(PropertyInfo property, CultureInfo parsingCulture)
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{
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_parsingCulture = parsingCulture;
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Property = property;
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}
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public PropertyInfo Property { get; private set; }
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public bool WriteScalar(string value, object target)
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{
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try
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{
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object propertyValue = null;
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if (Property.PropertyType.IsEnum)
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{
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propertyValue = Enum.Parse(Property.PropertyType, value, true);
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}
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else
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{
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propertyValue = Convert.ChangeType(value, Property.PropertyType, _parsingCulture);
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}
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Property.SetValue(target, propertyValue, null);
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}
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catch (InvalidCastException)
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{
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return false;
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}
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catch (FormatException)
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{
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return false;
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}
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catch (ArgumentException)
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{
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return false;
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}
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catch (OverflowException)
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{
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return false;
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}
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return true;
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}
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[SuppressMessage("Microsoft.Design", "CA1031:DoNotCatchGeneralExceptionTypes", Justification = "FormatException (thrown by ConvertFromString) is thrown as Exception.InnerException, so we've to catch directly System.Exception")]
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public bool WriteNullable(string value, object target)
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{
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var nc = new NullableConverter(Property.PropertyType);
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// FormatException (thrown by ConvertFromString) is thrown as Exception.InnerException, so we've to catch directly System.Exception
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try
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{
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Property.SetValue(target, nc.ConvertFromString(null, _parsingCulture, value), null);
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}
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catch (Exception)
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{
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return false;
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}
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return true;
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}
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}
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}
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