LethalCompany/Lethal Company/ExportedProject/Assets/Plugins/Assembly-CSharp-firstpass/ES3Internal/ES3Stream.cs

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2023-12-22 22:51:17 +00:00
using System;
using System.IO;
using System.IO.Compression;
using System.Security.Cryptography;
using UnityEngine;
namespace ES3Internal
{
public static class ES3Stream
{
public static Stream CreateStream(ES3Settings settings, ES3FileMode fileMode)
{
bool flag = fileMode != ES3FileMode.Read;
Stream stream = null;
new FileInfo(settings.FullPath);
try
{
if (settings.location == ES3.Location.InternalMS)
{
if (!flag)
{
return null;
}
stream = new MemoryStream(settings.bufferSize);
}
else if (settings.location == ES3.Location.File)
{
if (!flag && !ES3IO.FileExists(settings.FullPath))
{
return null;
}
stream = new ES3FileStream(settings.FullPath, fileMode, settings.bufferSize, useAsync: false);
}
else if (settings.location == ES3.Location.PlayerPrefs)
{
if (flag)
{
stream = new ES3PlayerPrefsStream(settings.FullPath, settings.bufferSize, fileMode == ES3FileMode.Append);
}
else
{
if (!PlayerPrefs.HasKey(settings.FullPath))
{
return null;
}
stream = new ES3PlayerPrefsStream(settings.FullPath);
}
}
else if (settings.location == ES3.Location.Resources)
{
if (flag)
{
if (Application.isEditor)
{
throw new NotSupportedException("Cannot write directly to Resources folder. Try writing to a directory outside of Resources, and then manually move the file there.");
}
throw new NotSupportedException("Cannot write to Resources folder at runtime. Use a different save location at runtime instead.");
}
ES3ResourcesStream eS3ResourcesStream = new ES3ResourcesStream(settings.FullPath);
if (!eS3ResourcesStream.Exists)
{
eS3ResourcesStream.Dispose();
return null;
}
stream = eS3ResourcesStream;
}
return CreateStream(stream, settings, fileMode);
}
catch (Exception ex)
{
stream?.Dispose();
throw ex;
}
}
public static Stream CreateStream(Stream stream, ES3Settings settings, ES3FileMode fileMode)
{
try
{
bool flag = fileMode != ES3FileMode.Read;
if (settings.encryptionType != 0 && stream.GetType() != typeof(UnbufferedCryptoStream))
{
EncryptionAlgorithm alg = null;
if (settings.encryptionType == ES3.EncryptionType.AES)
{
alg = new AESEncryptionAlgorithm();
}
stream = new UnbufferedCryptoStream(stream, !flag, settings.encryptionPassword, settings.bufferSize, alg);
}
if (settings.compressionType != 0 && stream.GetType() != typeof(GZipStream) && settings.compressionType == ES3.CompressionType.Gzip)
{
stream = (flag ? new GZipStream(stream, CompressionMode.Compress) : new GZipStream(stream, CompressionMode.Decompress));
}
return stream;
}
catch (Exception ex)
{
stream?.Dispose();
if (ex.GetType() == typeof(CryptographicException))
{
throw new CryptographicException("Could not decrypt file. Please ensure that you are using the same password used to encrypt the file.");
}
throw ex;
}
}
public static void CopyTo(Stream source, Stream destination)
{
source.CopyTo(destination);
}
}
}