Peter von der Ahé
4f2bdff90b
Change-Id: I1a3cc03fba9783807fa637a9d42fdbad68ee7686 Reviewed-on: https://dart-review.googlesource.com/31040 Commit-Queue: Peter von der Ahé <ahe@google.com> Reviewed-by: Kevin Millikin <kmillikin@google.com>
56 lines
1.8 KiB
Dart
Executable File
56 lines
1.8 KiB
Dart
Executable File
#!/usr/bin/env dart
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// Copyright (c) 2017, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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import 'dart:async';
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import 'dart:io';
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import 'package:kernel/ast.dart';
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import 'package:kernel/binary/ast_to_binary.dart';
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import 'package:kernel/binary/limited_ast_to_binary.dart';
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import 'package:kernel/kernel.dart';
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import 'util.dart';
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void usage() {
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print("Split a dill file into separate dill files (one library per file).");
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print("Dart internal libraries are not included in the output.");
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print("");
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print("Usage: dart <script> dillFile.dill");
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print("The given argument should be an existing file");
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print("that is valid to load as a dill file.");
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exit(1);
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}
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main(args) async {
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CommandLineHelper.requireExactlyOneArgument(true, args, usage);
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Component binary = CommandLineHelper.tryLoadDill(args[0], usage);
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int part = 1;
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binary.libraries.forEach((lib) => lib.isExternal = true);
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for (int i = 0; i < binary.libraries.length; ++i) {
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Library lib = binary.libraries[i];
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if (lib.name?.startsWith("dart.") == true ||
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lib.name == "builtin" ||
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lib.name == "nativewrappers") continue;
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lib.isExternal = false;
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String path = args[0] + ".part${part++}.dill";
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await writeComponentToFile(binary, path);
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print("Wrote $path");
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lib.isExternal = true;
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}
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}
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Future<Null> writeComponentToFile(Component component, String path) async {
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File output = new File(path);
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IOSink sink = output.openWrite();
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try {
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BinaryPrinter printer =
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new LimitedBinaryPrinter(sink, (lib) => !lib.isExternal, false);
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printer.writeComponentFile(component);
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} finally {
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await sink.close();
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}
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}
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