| #!/usr/bin/env dart |
| // Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file |
| // for details. 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'; |
| |
| import 'package:kernel/ast.dart'; |
| import 'package:kernel/binary/ast_to_binary.dart'; |
| import 'package:kernel/kernel.dart'; |
| import 'package:kernel/src/tool/command_line_util.dart'; |
| |
| void usage() { |
| print("Split a dill file into separate dill files (one library per file)."); |
| print("Dart internal libraries are not included in the output."); |
| print(""); |
| print("Usage: dart <script> dillFile.dill"); |
| print("The given argument should be an existing file"); |
| print("that is valid to load as a dill file."); |
| exit(1); |
| } |
| |
| main(args) async { |
| CommandLineHelper.requireExactlyOneArgument(args, usage, |
| requireFileExists: true); |
| Component binary = CommandLineHelper.tryLoadDill(args[0]); |
| |
| int part = 1; |
| for (int i = 0; i < binary.libraries.length; ++i) { |
| Library lib = binary.libraries[i]; |
| if (lib.name?.startsWith("dart.") == true || |
| lib.name == "builtin" || |
| lib.name == "nativewrappers") continue; |
| String path = args[0] + ".part${part++}.dill"; |
| await writeComponentToFile(binary, path, lib); |
| print("Wrote $path"); |
| } |
| } |
| |
| Future<Null> writeComponentToFile( |
| Component component, String path, Library wantedLibrary) async { |
| File output = new File(path); |
| IOSink sink = output.openWrite(); |
| try { |
| BinaryPrinter printer = |
| new BinaryPrinter(sink, libraryFilter: (lib) => lib == wantedLibrary); |
| printer.writeComponentFile(component); |
| } finally { |
| await sink.close(); |
| } |
| } |