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using Ryujinx.HLE.HOS.Ipc;
using System;
using System.Collections.Generic;
using System.IO;
namespace Ryujinx.HLE.HOS.Services.FspSrv
{
class IFile : IpcService, IDisposable
{
private Dictionary<int, ServiceProcessRequest> _commands;
public override IReadOnlyDictionary<int, ServiceProcessRequest> Commands => _commands;
private Stream _baseStream;
public event EventHandler<EventArgs> Disposed;
public string HostPath { get; private set; }
public IFile(Stream baseStream, string hostPath)
{
_commands = new Dictionary<int, ServiceProcessRequest>
{
{ 0, Read },
{ 1, Write },
{ 2, Flush },
{ 3, SetSize },
{ 4, GetSize }
};
_baseStream = baseStream;
HostPath = hostPath;
}
// Read(u32, u64 offset, u64 size) -> (u64 out_size, buffer<u8, 0x46, 0> out_buf)
public long Read(ServiceCtx context)
{
long position = context.Request.ReceiveBuff[0].Position;
long zero = context.RequestData.ReadInt64();
long offset = context.RequestData.ReadInt64();
long size = context.RequestData.ReadInt64();
byte[] data = new byte[size];
_baseStream.Seek(offset, SeekOrigin.Begin);
int readSize = _baseStream.Read(data, 0, (int)size);
context.Memory.WriteBytes(position, data);
context.ResponseData.Write((long)readSize);
return 0;
}
// Write(u32, u64 offset, u64 size, buffer<u8, 0x45, 0>)
public long Write(ServiceCtx context)
{
long position = context.Request.SendBuff[0].Position;
long zero = context.RequestData.ReadInt64();
long offset = context.RequestData.ReadInt64();
long size = context.RequestData.ReadInt64();
byte[] data = context.Memory.ReadBytes(position, size);
_baseStream.Seek(offset, SeekOrigin.Begin);
_baseStream.Write(data, 0, (int)size);
return 0;
}
// Flush()
public long Flush(ServiceCtx context)
{
_baseStream.Flush();
return 0;
}
// SetSize(u64 size)
public long SetSize(ServiceCtx context)
{
long size = context.RequestData.ReadInt64();
_baseStream.SetLength(size);
return 0;
}
// GetSize() -> u64 fileSize
public long GetSize(ServiceCtx context)
{
context.ResponseData.Write(_baseStream.Length);
return 0;
}
public void Dispose()
{
Dispose(true);
}
protected virtual void Dispose(bool disposing)
{
if (disposing && _baseStream != null)
{
_baseStream.Dispose();
Disposed?.Invoke(this, EventArgs.Empty);
}
}
}
}
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