extractFile static method

Future<void> extractFile(
  1. File file,
  2. String destinationPath
)

Extracts a ZIP file to the specified destination path.

This method reads a ZIP file and extracts all its contents to the specified destination directory, preserving the directory structure and creating any necessary directories.

Parameters:

  • file: The ZIP file to extract
  • destinationPath: The directory path where files should be extracted

Example:

final zipFile = File('my_archive.zip');
await ArchiveHelper.extractFile(zipFile, './extracted_files');
// All files from my_archive.zip are now in the ./extracted_files directory

Note: This method will overwrite existing files with the same names in the destination directory.

Implementation

static Future<void> extractFile(File file, String destinationPath) async {
  try {
    var bytes = await file.readAsBytes();
    var archive = ZipDecoder().decodeBytes(bytes);
    for (var file in archive) {
      var filename = file.name;
      if (file.isFile) {
        var data = file.content as List<int>;
        File('$destinationPath/$filename')
          ..createSync(recursive: true)
          ..writeAsBytesSync(data);
      } else {
        Directory('$destinationPath/$filename').create(recursive: true);
      }
    }
  } catch (e) {
    // Re-throw the exception to allow callers to handle extraction errors
    throw Exception('Failed to extract archive: ${e.toString()}');
  }
}