118 lines
No EOL
4.3 KiB
C#
118 lines
No EOL
4.3 KiB
C#
#region License
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// <copyright file="ValueMapper.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.Collections.Generic;
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using System.Globalization;
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using System.Linq;
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using System.Reflection;
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using CommandLine.Infrastructure;
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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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/// Maps unnamed options to property using <see cref="CommandLine.ValueOptionAttribute"/> and <see cref="CommandLine.ValueListAttribute"/>.
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/// </summary>
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internal sealed class ValueMapper
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{
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private readonly CultureInfo _parsingCulture;
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private readonly object _target;
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private IList<string> _valueList;
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private ValueListAttribute _valueListAttribute;
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private IList<Pair<PropertyInfo, ValueOptionAttribute>> _valueOptionAttributeList;
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private int _valueOptionIndex;
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public ValueMapper(object target, CultureInfo parsingCulture)
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{
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_target = target;
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_parsingCulture = parsingCulture;
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InitializeValueList();
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InitializeValueOption();
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}
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public bool CanReceiveValues
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{
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get { return IsValueListDefined || IsValueOptionDefined; }
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}
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private bool IsValueListDefined
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{
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get { return _valueListAttribute != null; }
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}
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private bool IsValueOptionDefined
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{
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get { return _valueOptionAttributeList.Count > 0; }
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}
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public bool MapValueItem(string item)
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{
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if (IsValueOptionDefined &&
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_valueOptionIndex < _valueOptionAttributeList.Count)
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{
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var valueOption = _valueOptionAttributeList[_valueOptionIndex++];
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var propertyWriter = new PropertyWriter(valueOption.Left, _parsingCulture);
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return ReflectionHelper.IsNullableType(propertyWriter.Property.PropertyType) ?
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propertyWriter.WriteNullable(item, _target) :
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propertyWriter.WriteScalar(item, _target);
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}
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return IsValueListDefined && AddValueItem(item);
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}
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private bool AddValueItem(string item)
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{
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if (_valueListAttribute.MaximumElements == 0 ||
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_valueList.Count == _valueListAttribute.MaximumElements)
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{
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return false;
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}
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_valueList.Add(item);
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return true;
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}
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private void InitializeValueList()
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{
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_valueListAttribute = ValueListAttribute.GetAttribute(_target);
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if (IsValueListDefined)
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{
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_valueList = ValueListAttribute.GetReference(_target);
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}
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}
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private void InitializeValueOption()
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{
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var list = ReflectionHelper.RetrievePropertyList<ValueOptionAttribute>(_target);
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// default is index 0, so skip sorting if all have it
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_valueOptionAttributeList = list.All(x => x.Right.Index == 0)
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? list : list.OrderBy(x => x.Right.Index).ToList();
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}
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}
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} |