Hey Guys,
I’m trying to read the contents of a .GZ file in max by using the dotnet GZIPStream class. Now I am a little inexperienced when it comes to .NET so I am currently looking at this example for extracting a set of files provided with the class description and I am trying to put that into proper MXS:
public static void Decompress(FileInfo fileToDecompress)
{
using (FileStream originalFileStream = fileToDecompress.OpenRead())
{
string currentFileName = fileToDecompress.FullName;
string newFileName = currentFileName.Remove(currentFileName.Length - fileToDecompress.Extension.Length);
using (FileStream decompressedFileStream = File.Create(newFileName))
{
using (GZipStream decompressionStream = new GZipStream(originalFileStream, CompressionMode.Decompress))
{
decompressionStream.CopyTo(decompressedFileStream);
Console.WriteLine($"Decompressed: {fileToDecompress.Name}");
}
}
}
}
I know how to use dotnet classes and objects, but I cannot wrap my head around the bits where the GZIPStream class is being used in the following way and how to translate that to MXS:
using (GZipStream decompressionStream = new GZipStream(originalFileStream, CompressionMode.Decompress))
What I have so far is this;
fn decompress fileName newFileName= (
currentFileName = fileName
newFileName = newFileName
decompressedFileStream = undefined
(dotnetClass "System.IO.FileStream") decompressedFileStream = ((dotnetClass "System.IO.File").create fileName)
decompressionStream = dotnetClass "System.IO.Compression.GZIPStream" decompressedFileStream (dotnetClass "System.IO.Compression)"CompressionMode.Decompress
)
obviously that doesn’t work and isn’t finished but can anybody point me in the right direction?
Ok, I now have extracting GZip Files working, now on to the live reading instead of creating a file. I’ll just post the extraction function for those interested. Note that I have thrown the decompression in a try/catch because I didn’t want max to lock the files each time the function would error. But basically, you can remove this:
fn decompress fileName newFileName = (
compressedFileStream = (dotnetClass "System.IO.File").open fileName (dotnetClass "system.io.filemode").open
decompressedFileStream = (dotnetClass "System.IO.File").create newFileName
try (
decompressionStream = dotnetobject "System.IO.Compression.GZipStream" compressedFileStream (dotnetclass "System.IO.Compression.Compressionmode").decompress
decompressionStream.CopyTo(decompressedFileStream)
)
catch (
print "yeah, that didn't work obviously"
)
compressedFileStream.Close()
decompressedFileStream.Close()
)
decompress fileName newFileName