React Native

Create Zip in a BinData Object

See more Zip Examples

Recursively appends files in a directory tree and writes a zip archive into a Chilkat BinData object. React Native

import { BinData, Zip } from '@chilkat/react-native'

async function chilkatExample() {
  // This example assumes the Chilkat API to have been previously unlocked.
  // See Global Unlock Sample for sample code.

  const zip = new Zip();

  // Initialize the zip object.  Because we will never actually write a zip file to the filesystem,
  // the filepath passed to NewZip does not matter.
  try {
    zip.newZip('x.zip');
  } catch {
    console.log(zip.lastErrorText);
    return;
  }

  // Append a directory tree.  The call to AppendFiles does
  // not read the file contents or append them to the zip
  // object in memory.  It simply appends references
  // to the files so that when WriteBd, WriteZip, or WriteZipAndClose 
  // is called, the referenced files are streamed and compressed
  // into the .zip output file (or BinData object).

  const recurse = true;
  try {
    await zip.appendFilesAsync('c:/temp/a/*', recurse);
  } catch {
    console.log(zip.lastErrorText);
    return;
  }

  // Write the zip archive into the bdZip object.
  const bdZip = new BinData();
  try {
    await zip.writeBdAsync(bdZip);
  } catch {
    console.log(zip.lastErrorText);
    return;
  }

  // We could directly access the bytes of the zip archive, or perhaps
  // get the zip bytes in base64 format.
  const zipAsBase64 = bdZip.getEncoded('base64');
  console.log(zipAsBase64);

  // Or the zip can be used by some other Chilkat method call that accepts
  // a BinData object as an argument.
}