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using Ryujinx.HLE.HOS.Ipc;
using System;
using System.Collections.Generic;
namespace Ryujinx.HLE.HOS.Services.Am
{
class IStorageAccessor : IpcService
{
private Dictionary<int, ServiceProcessRequest> m_Commands;
public override IReadOnlyDictionary<int, ServiceProcessRequest> Commands => m_Commands;
private IStorage Storage;
public IStorageAccessor(IStorage Storage)
{
m_Commands = new Dictionary<int, ServiceProcessRequest>()
{
{ 0, GetSize },
{ 10, Write },
{ 11, Read }
};
this.Storage = Storage;
}
public long GetSize(ServiceCtx Context)
{
Context.ResponseData.Write((long)Storage.Data.Length);
return 0;
}
public long Write(ServiceCtx Context)
{
//TODO: Error conditions.
long WritePosition = Context.RequestData.ReadInt64();
(long Position, long Size) = Context.Request.GetBufferType0x21();
if (Size > 0)
{
long MaxSize = Storage.Data.Length - WritePosition;
if (Size > MaxSize)
{
Size = MaxSize;
}
byte[] Data = Context.Memory.ReadBytes(Position, Size);
Buffer.BlockCopy(Data, 0, Storage.Data, (int)WritePosition, (int)Size);
}
return 0;
}
public long Read(ServiceCtx Context)
{
//TODO: Error conditions.
long ReadPosition = Context.RequestData.ReadInt64();
(long Position, long Size) = Context.Request.GetBufferType0x22();
byte[] Data;
if (Storage.Data.Length > Size)
{
Data = new byte[Size];
Buffer.BlockCopy(Storage.Data, 0, Data, 0, (int)Size);
}
else
{
Data = Storage.Data;
}
Context.Memory.WriteBytes(Position, Data);
return 0;
}
}
}
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