Dart

Gzip Compress In Memory and Base64 Encode

See more Gzip Examples

Demonstrates how to Gzip compress in-memory data and then encode the compressed data to base64. 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 gzip = CkGzip();

  // This example will load a file into the fileData object.
  // Your application might load fileData from other sources..
  final fileData = CkBinData();
  try {
    fileData.loadFile('qa_data/xml/hamlet.xml');
  } on ChilkatException {
    print('Failed to load file.');
    return;
  }

  // In-place compress the contents of fileData
  try {
    gzip.compressBd(fileData);
  } on ChilkatException catch (e) {
    print(e.lastErrorText);
    return;
  }

  // Get the base64 encoded compressed data (in a single line).
  final strBase64 = fileData.getEncoded('base64');
  print(strBase64);
  print('--------');

  // To get the base64 in multiple lines, as it might appear in MIME,
  // use "base64-mime".
  final strBase64MultiLine = fileData.getEncoded('base64-mime');
  print(strBase64MultiLine);
}