dart-sdk/pkg/kernel/bin/split.dart
Sam Rawlins 8d04e49078 Remove redundant imports
Each of these imports removed is redundant with
'package:kernel/ast.dart'.

Bug: https://github.com/dart-lang/sdk/issues/44569
Change-Id: Ia9bc08b4ffd863572c84fe8a4fa465d2e8e04f7c
Reviewed-on: https://dart-review.googlesource.com/c/sdk/+/213845
Reviewed-by: Jens Johansen <jensj@google.com>
Commit-Queue: Samuel Rawlins <srawlins@google.com>
2021-09-20 15:25:01 +00:00

52 lines
1.6 KiB
Dart
Executable file

#!/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("");
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);
}
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 (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();
}
}