blob: 149f28e1b129e9bcb98dd32f95f8fb4d2fb53289 [file] [log] [blame]
#!/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/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("Usage: dart <script> dillFile.dill");
print("The given argument should be an existing file");
print("that is valid to load as a dill file.");
void 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 ("dart.") == true || == "builtin" || == "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);
} finally {
await sink.close();