using JDC;
using System;
using System.Runtime.InteropServices;

public class JDCZlibWrapper : Singleton<JDCZlibWrapper>
{
	private object _lock = new object();

	private JDCZlibWrapper()
	{
		JDCZlibWrapper.JDCZlibInitialize();
	}

	[DllImport("JDCZlibForUnity")]
	private static extern void JDCZlibInitialize();

	[DllImport("JDCZlibForUnity")]
	private static extern bool JDCZlibCompress(string source, ref long resultAddress, ref long resultSize);

	[DllImport("JDCZlibForUnity")]
	private static extern IntPtr JDCZlibDeCompress([MarshalAs(UnmanagedType.LPArray)] byte[] source, int length);

	public int doCompressOnBytes(string source, ref byte[] buffer, int bufferIdx = 0)
	{
		object @lock = this._lock;
		int result;
		lock (@lock)
		{
			if (buffer == null)
			{
				buffer = BufferPool<byte>.GetBuffer((long)source.Length);
			}
			long value = 0L;
			long num = 0L;
			bool flag = JDCZlibWrapper.JDCZlibCompress(source, ref value, ref num);
			if (flag)
			{
				int num2 = bufferIdx + (int)num;
				BufferPool<byte>.EnsureNewSize(ref buffer, (long)num2, (long)bufferIdx, false);
				IntPtr source2 = new IntPtr(value);
				Marshal.Copy(source2, buffer, bufferIdx, (int)num);
				result = (int)num;
			}
			else
			{
				result = 0;
			}
		}
		return result;
	}

	public byte[] doCompress(string source)
	{
		object @lock = this._lock;
		byte[] result;
		lock (@lock)
		{
			long value = 0L;
			long num = 0L;
			bool flag = JDCZlibWrapper.JDCZlibCompress(source, ref value, ref num);
			if (flag)
			{
				IntPtr source2 = new IntPtr(value);
				byte[] array = new byte[num];
				Marshal.Copy(source2, array, 0, (int)num);
				result = array;
			}
			else
			{
				result = null;
			}
		}
		return result;
	}

	public string doDeCompress(byte[] source)
	{
		object @lock = this._lock;
		string result;
		lock (@lock)
		{
			IntPtr ptr = JDCZlibWrapper.JDCZlibDeCompress(source, source.Length);
			result = Marshal.PtrToStringAnsi(ptr);
		}
		return result;
	}

	public string doDeCompress(byte[] source, int length)
	{
		object @lock = this._lock;
		string result;
		lock (@lock)
		{
			IntPtr ptr = JDCZlibWrapper.JDCZlibDeCompress(source, length);
			result = Marshal.PtrToStringAnsi(ptr);
		}
		return result;
	}

	public string UnzipFile(string zipFilePath, string targetFolder)
	{
		object @lock = this._lock;
		string empty;
		lock (@lock)
		{
			empty = string.Empty;
		}
		return empty;
	}
}