Dart

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. Dart

import 'package:chilkat/chilkat.dart';

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

  final zip = CkZip();

  // 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');
  } on ChilkatException catch (e) {
    print(e.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).

  final recurse = true;
  try {
    zip.appendFiles('c:/temp/a/*', recurse);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Write the zip archive into the bdZip object.
  final bdZip = CkBinData();
  try {
    zip.writeBd(bdZip);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

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

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