Utilities.ungzip() GmailAttachment object

[Harry Hoffman]

Hi Folks,

Wondering if anyone has successfully used Utilities.ungzip to take a Gmail Attachment and decompress it. I have the following code which is bombing on on trying to use Utilities.ungzip(). The error message, Error

Exception: Invalid argument,  is not helpful :-(

The console output shows a file with a byte count and mime type of gzip (see below code). I have no idea what I'm doing wrong. Can anyone point me in the right direction?

for (var f of files)

{

var file_name = f.getName();

console.log("Attachment found for: " + file_name);

if ( file_name.match(/\.gz/) )

{

var blob = f.copyBlob();

console.log(files);

console.log(f);

console.log(blob.getSize(), blob.getContentType(), typeof blob);

var uncompressedBlob = Utilities.ungzip(blob.copyBlob());

console.log(typeof uncompressdBlob);

}

}

8:01:17 AM

Info

Attachment found for: Host - Applicable Errata-2022-06-05.csv.gz

8:01:17 AM

Info

[ { toString: [Function], getSize: [Function], getHash: [Function], getName: [Function], getBytes: [Function], setName: [Function], getContentType: [Function], setContentType: [Function], setContentTypeFromExtension: [Function], getDataAsString: [Function], setDataFromString: [Function], isGoogleType: [Function], getAllBlobs: [Function], copyBlob: [Function], setBytes: [Function], getAs: [Function] } ]

8:01:17 AM

Info

{ toString: [Function], getSize: [Function], getHash: [Function], getName: [Function], getBytes: [Function], setName: [Function], getContentType: [Function], setContentType: [Function], setContentTypeFromExtension: [Function], getDataAsString: [Function], setDataFromString: [Function], isGoogleType: [Function], getAllBlobs: [Function], copyBlob: [Function], setBytes: [Function], getAs: [Function] }

8:01:17 AM

Info

1980026 'application/gzip' 'object'

[Clark Lind]

Since you have already made a copy of the blob (gzip file), I think it doesn't like creating a second copy. Try just   var uncompressedBlob = Utilities.ungzip(blob);

[Harry Hoffman]

Thanks, I had originally tried that but it doesn't work either. The docs say it takes a function as an argument but I'm wondering if I'm passing the wrong thing into it.