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using System;

namespace UnityDataTools.FileSystem;

// Use this class to read data from a Unity file.

public class UnityFile : IDisposable

{

internal UnityFile()

{

}

internal UnityFileHandle m_Handle;

public long Read(long size, byte[] buffer)

{

var r = DllWrapper.ReadFile(m_Handle, size, buffer, out var actualSize);

UnityFileSystem.HandleErrors(r);

return actualSize;

}

public long Seek(long offset, SeekOrigin origin = SeekOrigin.Begin)

{

var r = DllWrapper.SeekFile(m_Handle, offset, origin, out var newPosition);

UnityFileSystem.HandleErrors(r);

return newPosition;

}

public long GetSize()

{

// This could be a property but as it may throw an exception, it's probably better as a method.

var r = DllWrapper.GetFileSize(m_Handle, out var size);

UnityFileSystem.HandleErrors(r);

return size;

}

public void Dispose()

{

if (m_Handle != null && !m_Handle.IsInvalid)

{

m_Handle.Dispose();

}

}

}