React Native

Compress Bytes

See more Compression Examples

Demonstrates how to compress binary data. React Native

import { Compression, FileAccess } 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 fac = new FileAccess();

  const fileBytes = fac.readEntireFile('qa_data/bmp/big.bmp');
  if (!fac.lastMethodSuccess) {
    console.log(fac.lastErrorText);
    return;
  }

  const compress = new Compression();
  compress.algorithm = 'deflate';

  const compressedBytes = await compress.compressBytesAsync(fileBytes);
  if (!compress.lastMethodSuccess) {
    console.log(compress.lastErrorText);
    return;
  }

  try {
    fac.writeEntireFile('qa_output/compressedBmp.dat', compressedBytes);
  } catch {
    console.log(fac.lastErrorText);
    return;
  }
}