private static async Task ExtractBarFileContents(BarEntry barFileInfo, string rootPath, FileStream fileStream, string outputPath, bool convertFile)
{
fileStream.Seek(barFileInfo.Offset, SeekOrigin.Begin); //Seek to file
var path = Path.Combine(outputPath, rootPath,
Path.GetDirectoryName(barFileInfo.FileName) ?? string.Empty);
if (!Directory.Exists(path))
{
Directory.CreateDirectory(path);
}
var filePath = Path.Combine(outputPath, rootPath, barFileInfo.FileName);
//Extract to tmp file
var tempFileName = await CreateTempFileForBarFile(fileStream, barFileInfo);
await ConvertFile(convertFile, tempFileName, barFileInfo, filePath);
}
private static async Task <string> CreateTempFileForBarFile(FileStream fileStream, BarEntry barFileInfo)
{
var tempFileName = Path.GetTempFileName();
using (var fileStreamFinal = File.Open(tempFileName, FileMode.Create, FileAccess.Write, FileShare.None))
{
var buffer = bufferPool.Rent(81920);
try
{
int read;
var totalread = 0L;
while ((read = await fileStream.ReadAsync(buffer, 0, buffer.Length)) > 0)
{
if (read > barFileInfo.FileSize)
{
totalread = barFileInfo.FileSize;
await fileStreamFinal.WriteAsync(buffer, 0, barFileInfo.FileSize);
}
else if (totalread + read <= barFileInfo.FileSize)
{
totalread += read;
await fileStreamFinal.WriteAsync(buffer, 0, read);
}
else if (totalread + read > barFileInfo.FileSize)
{
var leftToRead = barFileInfo.FileSize - totalread;
totalread = barFileInfo.FileSize;
await fileStreamFinal.WriteAsync(buffer, 0, Convert.ToInt32(leftToRead));
}
if (totalread >= barFileInfo.FileSize)
{
break;
}
}
}
finally
{
bufferPool.Return(buffer);
}
}
return(tempFileName);
}
private static async Task ConvertFile(bool convertFile, string tempFileName, BarEntry barFileInfo, string filePath)
{
//Convert file
if (convertFile)
{
if (L33TZipUtils.IsL33TZipFile(tempFileName) &&
!barFileInfo.FileName.EndsWith(".age4scn", StringComparison.OrdinalIgnoreCase))
{
var rnd = new Random(Guid.NewGuid().GetHashCode());
var tempFileName2 =
Path.Combine(Path.GetTempPath(),
$"{Path.GetFileName(barFileInfo.FileName)}-{rnd.Next()}.tmp");
await L33TZipUtils.ExtractL33TZipFileAsync(tempFileName, tempFileName2);
if (File.Exists(tempFileName))
{
File.Delete(tempFileName);
}
tempFileName = tempFileName2;
}
if (barFileInfo.FileName.EndsWith(".xmb", StringComparison.OrdinalIgnoreCase))
{
try
{
var rnd = new Random(Guid.NewGuid().GetHashCode());
var tempFileName2 =
Path.Combine(Path.GetTempPath(),
$"{Path.GetFileName(barFileInfo.FileName)}-{rnd.Next()}.tmp");
XmbFileUtils.XmbToXml(tempFileName, tempFileName2);
if (File.Exists(tempFileName))
{
File.Delete(tempFileName);
}
tempFileName = tempFileName2;
filePath = filePath.Substring(0, filePath.Length - 4);
}
catch (Exception)
{
//
}
}
else if (barFileInfo.FileName.EndsWith(".age4scn",
StringComparison.OrdinalIgnoreCase) &&
!L33TZipUtils.IsL33TZipFile(tempFileName))
{
var rnd = new Random(Guid.NewGuid().GetHashCode());
var tempFileName2 =
Path.Combine(Path.GetTempPath(),
$"{Path.GetFileName(barFileInfo.FileName)}-{rnd.Next()}.tmp");
await L33TZipUtils.CompressFileAsL33TZipAsync(tempFileName, tempFileName2);
if (File.Exists(tempFileName))
{
File.Delete(tempFileName);
}
tempFileName = tempFileName2;
}
}
//Move new file
if (File.Exists(filePath))
{
File.Delete(filePath);
}
File.Move(tempFileName, filePath);
File.SetCreationTimeUtc(filePath,
new DateTime(barFileInfo.LastWriteTime.Year, barFileInfo.LastWriteTime.Month,
barFileInfo.LastWriteTime.Day, barFileInfo.LastWriteTime.Hour,
barFileInfo.LastWriteTime.Minute, barFileInfo.LastWriteTime.Second));
File.SetLastWriteTimeUtc(filePath,
new DateTime(barFileInfo.LastWriteTime.Year, barFileInfo.LastWriteTime.Month,
barFileInfo.LastWriteTime.Day, barFileInfo.LastWriteTime.Hour,
barFileInfo.LastWriteTime.Minute, barFileInfo.LastWriteTime.Second));
}
