exec method

@override Future<void> exec(ExecContext context)

Run command.

The contents of katana.yaml and the arguments of the command are passed to context.

コマンドを実行します。

contextにkatana.yamlの内容やコマンドの引数が渡されます。

Implementation

@override
Future<void> exec(ExecContext context) async {
  final bin = context.yaml.getAsMap("bin");
  final flutter = bin.get("flutter", "flutter");
  final melos = bin.get("melos", "melos");
  final builderArguments = _tidbSchemaBuilderArguments(context);
  final builderShellArguments = _shellArguments(builderArguments);
  final builderShellSuffix =
      builderShellArguments.isEmpty ? "" : " $builderShellArguments";
  var output = "";
  void onOutput(Process process, String chunk) {
    output += chunk;
    if (output.contains("Built with build_runner")) {
      _finalizeTidbSchemas(context);
      output = "";
    } else if (output.length > 4096) {
      output = output.substring(output.length - 2048);
    }
  }

  if (File("melos.yaml").existsSync()) {
    await command(
      "Watch build_runner for all packages to generate code.",
      [
        melos,
        "exec",
        "--",
        "$flutter packages pub run build_runner watch "
            "--delete-conflicting-outputs$builderShellSuffix",
      ],
      action: onOutput,
      catchError: true,
      failOnStderr: false,
    );
  } else {
    await command(
      "Watch the project's build_runner to generate code.",
      [
        flutter,
        "packages",
        "pub",
        "run",
        "build_runner",
        "watch",
        "--delete-conflicting-outputs",
        ...builderArguments,
      ],
      action: onOutput,
      catchError: true,
      failOnStderr: false,
    );
  }
}