Dart

Add Binary Data to a ZIP Using AddBd

See more Zip Examples

This example demonstrates how to use the AddBd method to add binary data from a BinData object as a file entry within a ZIP archive.

The data is created entirely in memory, added to the ZIP as data/binary.dat, and then written to disk.

Dart

import 'package:chilkat/chilkat.dart';

void main() {
  // Create a new ZIP archive.
  final zip = CkZip();

  try {
    zip.newZip('inMemoryData.zip');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Create a BinData object containing binary content.
  final bd = CkBinData();

  // Append some bytes as hexadecimal.
  // The decoded bytes will become the contents of the ZIP entry.
  try {
    bd.appendEncoded('000102030405060708090A0B0C0D0E0F', 'hex');
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Add the BinData contents as a file entry within the ZIP.
  // The file will be stored as "data/binary.dat" inside the ZIP archive.
  try {
    zip.addBd('data/binary.dat', bd);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Write the ZIP archive to disk and close it.
  try {
    zip.writeZipAndClose();
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  print('ZIP archive created successfully.');
}