void _updateBinStubs()

in lib/src/global_packages.dart [598:686]
69 lines of code
20 McCabe index (conditional complexity)

  void _updateBinStubs(
      Entrypoint entrypoint, Package package, List<String>? executables,
      {required bool overwriteBinStubs, bool suggestIfNotOnPath = true}) {
    // Remove any previously activated binstubs for this package, in case the
    // list of executables has changed.
    _deleteBinStubs(package.name);

    if ((executables != null && executables.isEmpty) ||
        package.pubspec.executables.isEmpty) {
      return;
    }

    ensureDir(_binStubDir);

    var installed = <String>[];
    var collided = <String, String>{};
    var allExecutables = ordered(package.pubspec.executables.keys);
    for (var executable in allExecutables) {
      if (executables != null && !executables.contains(executable)) continue;

      var script = package.pubspec.executables[executable]!;

      var previousPackage = _createBinStub(
        package,
        executable,
        script,
        overwrite: overwriteBinStubs,
        snapshot: entrypoint.pathOfExecutable(
          exec.Executable.adaptProgramName(package.name, script),
        ),
      );
      if (previousPackage != null) {
        collided[executable] = previousPackage;

        if (!overwriteBinStubs) continue;
      }

      installed.add(executable);
    }

    if (installed.isNotEmpty) {
      var names = namedSequence('executable', installed.map(log.bold));
      log.message('Installed $names.');
    }

    // Show errors for any collisions.
    if (collided.isNotEmpty) {
      for (var command in ordered(collided.keys)) {
        if (overwriteBinStubs) {
          log.warning('Replaced ${log.bold(command)} previously installed from '
              '${log.bold(collided[command])}.');
        } else {
          log.warning('Executable ${log.bold(command)} was already installed '
              'from ${log.bold(collided[command])}.');
        }
      }

      if (!overwriteBinStubs) {
        log.warning('Deactivate the other package(s) or activate '
            '${log.bold(package.name)} using --overwrite.');
      }
    }

    // Show errors for any unknown executables.
    if (executables != null) {
      var unknown = ordered(executables
          .where((exe) => !package.pubspec.executables.keys.contains(exe)));
      if (unknown.isNotEmpty) {
        dataError("Unknown ${namedSequence('executable', unknown)}.");
      }
    }

    // Show errors for any missing scripts.
    // TODO(rnystrom): This can print false positives since a script may be
    // produced by a transformer. Do something better.
    var binFiles = package.executablePaths;
    for (var executable in installed) {
      var script = package.pubspec.executables[executable];
      var scriptPath = p.join('bin', '$script.dart');
      if (!binFiles.contains(scriptPath)) {
        log.warning('Warning: Executable "$executable" runs "$scriptPath", '
            'which was not found in ${log.bold(package.name)}.');
      }
    }

    if (suggestIfNotOnPath && installed.isNotEmpty) {
      _suggestIfNotOnPath(installed.first);
    }
  }