How to remove an entry from a zip file and create a new Blob from the modified zip file

[surajg90]

I'm trying to remove a zip entry from a zip file which user has selected zip file and create a new Blob from the modified zip. I've encountered an issue while implementing the code as follows:

zip.createWriter(new zip.BlobWriter("application/zip"), (writer) => {
  writer.add(modifiedEntries, (newZipBlob) => {
    // The newZipBlob now contains the modified zip file
     
    // newZipBlob is a Blob containing the modified zip file
  });
});

Any help or suggestions you can provide would be invaluable to me.

[seasick]

I think this might help you. I used something similar to modify a specific file and add it to a new Zip file.
This code adds all files to a new zip file, except that one you want to remove. There might be a better way though :)

const zipFileWriter = new BlobWriter();
const zipFileReader = new BlobReader(file);
const zipWriter = new ZipWriter(zipFileWriter);
const zipReader = new ZipReader(zipFileReader);
const entries = await zipReader.getEntries();
const specificFile = 'XXX.tmp';

for (const entry of entries) {
  if (entry.filename.endsWith(specificFile)) {
    // Do nothing here, since you want to remove the file
  } else {
    const writer = new BlobWriter();
    const data = await entry.getData!(writer);
    await zipWriter.add(entry.filename, new BlobReader(data));
  }
}

await zipWriter.close();
const newZipFileBlob = await zipFileWriter.getData();