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jellyfin/Jellyfin.Api/Helpers/ClassMigrationHelper.cs

72 lines
2.4 KiB

using System;
using System.Reflection;
namespace Jellyfin.Api.Migrations
{
/// <summary>
/// A static class for copying matching properties from one object to another.
/// TODO: remove at the point when a fixed migration path has been decided upon.
/// </summary>
public static class ClassMigrationHelper
{
/// <summary>
/// Extension for 'Object' that copies the properties to a destination object.
/// </summary>
/// <param name="source">The source.</param>
/// <param name="destination">The destination.</param>
public static void CopyProperties(this object source, object destination)
{
// If any this null throw an exception.
if (source == null || destination == null)
{
throw new Exception("Source or/and Destination Objects are null");
}
// Getting the Types of the objects.
Type typeDest = destination.GetType();
Type typeSrc = source.GetType();
// Iterate the Properties of the source instance and populate them from their destination counterparts.
PropertyInfo[] srcProps = typeSrc.GetProperties();
foreach (PropertyInfo srcProp in srcProps)
{
if (!srcProp.CanRead)
{
continue;
}
var targetProperty = typeDest.GetProperty(srcProp.Name);
if (targetProperty == null)
{
continue;
}
if (!targetProperty.CanWrite)
{
continue;
}
var obj = targetProperty.GetSetMethod(true);
if (obj != null && obj.IsPrivate)
{
continue;
}
var target = targetProperty.GetSetMethod();
if (target != null && (target.Attributes & MethodAttributes.Static) != 0)
{
continue;
}
if (!targetProperty.PropertyType.IsAssignableFrom(srcProp.PropertyType))
{
continue;
}
// Passed all tests, lets set the value.
targetProperty.SetValue(destination, srcProp.GetValue(source, null), null);
}
}
}
}