73 lines
2.3 KiB
C#
73 lines
2.3 KiB
C#
using System;
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using System.Collections;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.Linq;
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using System.Reflection;
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namespace zero.Core.Utils
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{
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public class ObjectCloner
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{
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const string SEPARATOR = ".";
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static Type STRING_TYPE = typeof(string);
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static ConcurrentDictionary<string, IEnumerable<PropertyInfo>> PublicPropertiesPerType { get; set; } = new();
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public static T CopyProperties<T>(T source, T target, params string[] exceptions)
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{
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return CopyPropertiesInternal(source, target, null, exceptions);
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}
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static T CopyPropertiesInternal<T>(T source, T target, string keyPrefix = null, params string[] exceptions)
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{
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Type type = source.GetType();
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if (!PublicPropertiesPerType.TryGetValue(type.FullName, out IEnumerable<PropertyInfo> properties))
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{
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properties = type.GetProperties(BindingFlags.Public | BindingFlags.NonPublic | BindingFlags.Instance).Where(x => x.CanWrite);
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PublicPropertiesPerType.TryAdd(type.FullName, properties);
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}
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foreach (PropertyInfo property in properties)
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{
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string propertyNameWithPrefix = CombineKey(SEPARATOR, keyPrefix, property.Name);
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if (exceptions.Contains(propertyNameWithPrefix, StringComparer.InvariantCultureIgnoreCase))
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{
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continue;
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}
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object propertyValue = property.GetValue(source, null);
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if (property.PropertyType.IsValueType || property.PropertyType.IsEnum || property.PropertyType.Equals(STRING_TYPE) || propertyValue == null || propertyValue is IEnumerable)
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{
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Console.WriteLine("copy: " + propertyNameWithPrefix);
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property.SetValue(target, propertyValue, null);
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}
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else if (property.PropertyType.IsClass)
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{
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string[] nestedExceptions = exceptions.Where(x => x.StartsWith(propertyNameWithPrefix, StringComparison.InvariantCultureIgnoreCase)).ToArray();
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property.SetValue(target, CopyPropertiesInternal(propertyValue, property.GetValue(target, null), propertyNameWithPrefix, nestedExceptions), null);
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}
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}
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return target;
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}
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private static string CombineKey(string sep, string key1, string key2)
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{
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if (String.IsNullOrEmpty(key1))
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{
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return key2;
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}
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return String.Join(sep, key1, key2);
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}
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}
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}
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