Unzipping large zip files?

[jmanden]

Hi Greggman,

Thank you for making this library available - it is greatly appreciated that you in addition to your webgl tutorials also provides this respository!

I was hoping you could spare a few minutes to help me out!?

Here goes:

I have managed to use the library to unzip a zip file using the following code calling "unzipper":

// Define the lolo function
window.unzipper = async function() {

const {entries} = await unzip('zipTest/dicomTHXMed.zip');

// print all entries and their sizes
for (const [name, entry] of Object.entries(entries)) {
console.log(name, entry.size);
names.push(name);

}

nFiles = names.length;

for(n=0;n<names.length;n++) {

   blobber[n] = await entries[names[n]].blob();
   
   loadFile(blobber[n],n,nFiles);
   
   console.log(n+" : "+n);

}

}

---

The zip file contains .dcm files at a size each of about 0.5 Mb. The function works fine for extracting the files as a blob when the zip file contains ~ 10 dcm files. However, if I try to unzip a file containing say 100 dcm files (approx 30 Mb compressed) then the browser freezes and gives the error message:
"Uncaught (in promise) Error: invalid local file header signature: 0x0
at readEntryDataHeader (unzipit.module.js:1057:11)
at async readEntryDataAsBlob (unzipit.module.js:1125:39)
at async ZipEntry.blob (unzipit.module.js:697:12)
at async window.lolo "

Is this error due to memory limitation with regards to max size of zip file to be unzipped?
Or am I doing something else wrong?

Kind regards