packages/pigeon/tool/shared/process_utils.dart

// Copyright 2013 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

import 'dart:async';
import 'dart:io' show Process, ProcessStartMode, stderr, stdout;

Future<int> runProcess(String command, List<String> arguments,
    {String? workingDirectory,
    bool streamOutput = true,
    bool logFailure = false}) async {
  final Process process = await Process.start(
    command,
    arguments,
    workingDirectory: workingDirectory,
    mode:
        streamOutput ? ProcessStartMode.inheritStdio : ProcessStartMode.normal,
  );

  if (streamOutput) {
    return process.exitCode;
  }

  final List<int> stdoutBuffer = <int>[];
  final List<int> stderrBuffer = <int>[];
  final Future<void> stdoutFuture = process.stdout.forEach(stdoutBuffer.addAll);
  final Future<void> stderrFuture = process.stderr.forEach(stderrBuffer.addAll);
  final int exitCode = await process.exitCode;
  await Future.wait(<Future<void>>[
    stdoutFuture,
    stderrFuture,
  ]);

  if (exitCode != 0 && logFailure) {
    // ignore: avoid_print
    print('$command $arguments failed:');
    stdout.add(stdoutBuffer);
    stderr.add(stderrBuffer);
    await Future.wait(<Future<void>>[
      stdout.flush(),
      stderr.flush(),
    ]);
  }
  return exitCode;
}