Jens Johansen
70b4ffae4b
Change-Id: I11277942cd8bb9f3f3b875233934ec0281c0369b Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/138085 Commit-Queue: Jens Johansen <jensj@google.com> Reviewed-by: Johnni Winther <johnniwinther@google.com>
53 lines
1.7 KiB
Dart
Executable File
53 lines
1.7 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/kernel.dart';
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import 'package:kernel/src/tool/command_line_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(args, usage,
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requireFileExists: true);
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Component binary = CommandLineHelper.tryLoadDill(args[0]);
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int part = 1;
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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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String path = args[0] + ".part${part++}.dill";
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await writeComponentToFile(binary, path, lib);
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print("Wrote $path");
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}
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}
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Future<Null> writeComponentToFile(
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Component component, String path, Library wantedLibrary) 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 BinaryPrinter(sink, libraryFilter: (lib) => lib == wantedLibrary);
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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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