Synnefo » Pithos MS Client

using System;

using System.Collections.Generic;

using Pithos.Core.Agents;

namespace Pithos.Core

{

    public class LocalFileComparer:EqualityComparer<CloudAction>

    {

        public override bool Equals(CloudAction x, CloudAction y)

        {

            if (x.Action != y.Action)

                return false;

            if (x.LocalFile != null && y.LocalFile != null && !x.LocalFile.FullName.Equals(y.LocalFile.FullName))

                return false;

            if (x.CloudFile != null && y.CloudFile != null )

            {

                if (x.CloudFile.X_Object_Hash == null & y.CloudFile.X_Object_Hash != null)

                    return false;

                if (x.CloudFile.X_Object_Hash != null & y.CloudFile.X_Object_Hash == null)

                    return false;

                if (x.CloudFile.X_Object_Hash == null & y.CloudFile.X_Object_Hash == null)

                    return (x.CloudFile.Name == y.CloudFile.Name);

                if (!x.CloudFile.X_Object_Hash.Equals(y.CloudFile.X_Object_Hash))

                    return false;

                //All directories have the same hash. Compare them using their names instead

                if (x.CloudFile.Content_Type == y.CloudFile.Content_Type && x.CloudFile.IsDirectory)

                {

                    return (x.CloudFile.Name == y.CloudFile.Name);

                }

            }

            if (x.CloudFile == null ^ y.CloudFile == null ||

                x.LocalFile == null ^ y.LocalFile == null)

                return false;

            return true;

        }

        public override int GetHashCode(CloudAction obj)

        {

            if (obj == null)

                return 0;

            var hash1 = (obj.LocalFile == null) ? Int32.MaxValue : obj.LocalFile.FullName.GetHashCode();

            var hash2 = Int32.MaxValue;

            if (obj.CloudFile != null)

            {

                //All directories have the same hash code. Use their name's hash code instead

                hash2 = obj.CloudFile.IsDirectory 

                            ? obj.CloudFile.Name.GetHashCode()

                            : (obj.CloudFile.X_Object_Hash ?? obj.CloudFile.Name ?? "").GetHashCode();

            }

            var hash3 = obj.Action.GetHashCode();

            return hash1 ^ hash2 & hash3;

        }

    }

}