public static PssgFile Open(Stream stream)
{
PssgFileType fileType = PssgFile.GetPssgType(stream);
if (fileType == PssgFileType.Pssg)
{
return(PssgFile.ReadPssg(stream, fileType));
}
else if (fileType == PssgFileType.Xml)
{
return(PssgFile.ReadXml(stream, fileType));
}
else // CompressedPssg
{
string tempPath = "temp.pssg";
try
{
using (var fs = File.Open(tempPath, FileMode.Create, FileAccess.ReadWrite, FileShare.Read))
{
// Decompress stream into temp file
using (GZipStream gZipStream = new GZipStream(stream, CompressionMode.Decompress, true))
{
gZipStream.CopyTo(fs);
}
// Determine the file type after inflate, add CompressedPssg to make compressed
fs.Seek(0, SeekOrigin.Begin);
fileType = GetPssgType(fs) + (int)PssgFileType.CompressedPssg;
PssgFile pFile = fileType switch
{
PssgFileType.CompressedPssg => PssgFile.ReadPssg(fs, fileType),
PssgFileType.CompressedXml => PssgFile.ReadXml(fs, fileType),
_ => throw new FileFormatException("This is not a pssg file.")
};
return(pFile);
}
}
finally
{
// Attempt to delete the temporary file
try
{
File.Delete(tempPath);
}
catch { }
}
}
}
public static PssgFile Open(Stream stream)
{
PssgFileType fileType = PssgFile.GetPssgType(stream);
if (fileType == PssgFileType.Pssg)
{
return(PssgFile.ReadPssg(stream, fileType));
}
else if (fileType == PssgFileType.Xml)
{
return(PssgFile.ReadXml(stream));
}
else // CompressedPssg
{
string tempPath = "temp.pssg";
try
{
FileStream fs = File.Open(tempPath, FileMode.Create, FileAccess.ReadWrite, FileShare.Read);
// Decompress stream into temp file
using (stream)
{
using (GZipStream gZipStream = new GZipStream(stream, CompressionMode.Decompress))
{
gZipStream.CopyTo(fs);
}
}
// Read temp file, and close it
fs.Seek(0, SeekOrigin.Begin);
PssgFile pFile = PssgFile.ReadPssg(fs, fileType);
return(pFile);
}
finally
{
// Attempt to delete the temporary file
try
{
File.Delete(tempPath);
}
catch { }
}
}
}
