runSubProcess static method

Future<String> runSubProcess(String executablePath, { String? workingDirectory, List<String> args = const [], StdoutSession? stdoutSession, bool runInShell = false, })

runs the given executablePath with the given args and returns the stdout as a string In case of an error the stderr is thrown as an exception

If workingDirectory is given then this directory will be passed to the Process as working directory

If stdoutSession is given then the output of the subprocess will be written to the StdoutSession and the StdoutSession will be opened and closed

Implementation

static Future<String> runSubProcess(
  String executablePath, {
  String? workingDirectory,
  List<String> args = const [],
  StdoutSession? stdoutSession,
  bool runInShell = false,
}) async {
  final process = await Process.start(
    executablePath,
    args,
    workingDirectory: workingDirectory,
    runInShell: runInShell,
  );

  List<StreamSubscription> subscriptions = [];

  List<int> stdoutBytes = [];
  List<int> stderrBytes = [];

  stdoutSession?.openSubprocessOutputWindow();

  subscriptions.add(
    process.stdout.listen(
      (event) {
        stdoutBytes.addAll(event);
        stdoutSession?.write(event);
      },
    ),
  );
  subscriptions.add(
    process.stderr.listen(
      (event) {
        stderrBytes.addAll(event);
        stdoutSession?.write(event);
      },
    ),
  );

  final exitCode = await process.exitCode;
  for (var element in subscriptions) {
    await element.cancel();
  }
  stdoutSession?.closeSubprocessOutputWindow();
  final decoder = Utf8Decoder();
  if (exitCode != 0) {
    throw Exception(decoder.convert(stderrBytes));
  }
  return decoder.convert(stdoutBytes);
}