Skip license processing for top-level source directories that are unchanged (#3437)

See https://github.com/flutter/flutter/issues/8106

tools/licenses/lib/main.dart

@@ -4,11 +4,16 @@
 
 // See README in this directory for information on how this code is organised.
 
+import 'dart:async';
 import 'dart:collection';
 import 'dart:convert';
 import 'dart:io' as system;
 import 'dart:math' as math;
 
+import 'package:args/args.dart';
+import 'package:crypto/crypto.dart' as crypto;
+import 'package:path/path.dart' as path;
+
 import 'filesystem.dart' as fs;
 import 'licenses.dart';
 import 'patterns.dart';
@@ -919,6 +924,8 @@ class RepositoryDirectory extends RepositoryEntry implements LicenseSource {
   final List<RepositoryLicensedFile> _files = <RepositoryLicensedFile>[];
   final List<RepositoryLicenseFile> _licenses = <RepositoryLicenseFile>[];
 
+  List<RepositoryDirectory> get subdirectories => _subdirectories;
+
   final Map<String, RepositoryEntry> _childrenByName = <String, RepositoryEntry>{};
 
   // the bit at the beginning excludes files like "license.py".
@@ -1235,6 +1242,33 @@ class RepositoryDirectory extends RepositoryEntry implements LicenseSource {
       result += directory.fileCount;
     return result;
   }
+
+  Iterable<RepositoryLicensedFile> get _allFiles sync* {
+    for (RepositoryLicensedFile file in _files) {
+      if (file.isIncludedInBuildProducts)
+        yield file;
+    }
+    for (RepositoryDirectory directory in _subdirectories) {
+      yield* directory._allFiles;
+    }
+  }
+
+  Stream<List<int>> _signatureStream(List files) async* {
+    for (RepositoryLicensedFile file in files) {
+      yield file.io.fullName.codeUnits;
+      yield file.io.readBytes();
+    }
+  }
+
+  /// Compute a signature representing a hash of all the licensed files within
+  /// this directory tree.
+  Future<String> get signature async {
+    List allFiles = _allFiles.toList();
+    allFiles.sort((RepositoryLicensedFile a, RepositoryLicensedFile b) =>
+        a.io.fullName.compareTo(b.io.fullName));
+    crypto.Digest digest = await crypto.md5.bind(_signatureStream(allFiles)).single;
+    return digest.bytes.map((int e) => e.toRadixString(16).padLeft(2, '0')).join();
+  }
 }
 
 class RepositoryGenericThirdPartyDirectory extends RepositoryDirectory {
@@ -2237,53 +2271,115 @@ class Progress {
 
 // MAIN
 
-void main(List<String> arguments) {
-  if (arguments.length != 1) {
-    print('Usage: dart lib/main.dart path/to/engine/root/src');
+Future<Null> main(List<String> arguments) async {
+  final ArgParser parser = new ArgParser()
+    ..addOption('src', help: 'The root of the engine source')
+    ..addOption('out', help: 'The directory where output is written')
+    ..addOption('golden', help: 'The directory containing golden results')
+    ..addFlag('release', help: 'Print output in the format used for product releases');
+
+  ArgResults argResults = parser.parse(arguments);
+  bool releaseMode = argResults['release'];
+  if (argResults['src'] == null) {
+    print('Flutter license script: Must provide --src directory');
+    print(parser.usage);
     system.exit(1);
   }
+  if (!releaseMode) {
+    if (argResults['out'] == null || argResults['golden'] == null) {
+      print('Flutter license script: Must provide --out and --golden directories in non-release mode');
+      print(parser.usage);
+      system.exit(1);
+    }
+    if (!system.FileSystemEntity.isDirectorySync(argResults['golden'])) {
+      print('Flutter license script: Golden directory does not exist');
+      print(parser.usage);
+      system.exit(1);
+    }
+    system.Directory out = new system.Directory(argResults['out']);
+    if (!out.existsSync())
+      out.createSync(recursive: true);
+  }
 
   try {
     system.stderr.writeln('Finding files...');
-    final RepositoryDirectory root = new RepositoryRoot(new fs.FileSystemDirectory.fromPath(arguments.single));
-    system.stderr.writeln('Collecting licenses...');
-    Progress progress = new Progress(root.fileCount);
-    List<License> licenses = new Set<License>.from(root.getLicenses(progress).toList()).toList();
-    progress.label = 'Dumping results...';
-    bool done = false;
-    List<License> usedLicenses = licenses.where((License license) => license.isUsed).toList();
-    assert(() {
-      print('UNUSED LICENSES:\n');
-      List<String> unusedLicenses = licenses
-        .where((License license) => !license.isUsed)
-        .map((License license) => license.toString())
-        .toList();
-      unusedLicenses.sort();
-      print(unusedLicenses.join('\n\n'));
-      print('~' * 80);
-      print('USED LICENSES:\n');
-      List<String> output = usedLicenses.map((License license) => license.toString()).toList();
-      output.sort();
-      print(output.join('\n\n'));
-      done = true;
-      return true;
-    });
-    if (!done) {
+    final RepositoryDirectory root = new RepositoryRoot(new fs.FileSystemDirectory.fromPath(argResults['src']));
+
+    if (releaseMode) {
+      system.stderr.writeln('Collecting licenses...');
+      Progress progress = new Progress(root.fileCount);
+      List<License> licenses = new Set<License>.from(root.getLicenses(progress).toList()).toList();
       if (progress.hadErrors)
         throw 'Had failures while collecting licenses.';
-      List<String> output = usedLicenses
+      progress.label = 'Dumping results...';
+      List<String> output = licenses
+        .where((License license) => license.isUsed)
         .map((License license) => license.toStringFormal())
         .where((String text) => text != null)
         .toList();
       output.sort();
       print(output.join('\n${"-" * 80}\n'));
+    } else {
+      RegExp signaturePattern = new RegExp(r'Signature: (\w+)');
+
+      for (RepositoryDirectory component in root.subdirectories) {
+        system.stderr.writeln('Collecting licenses for ${component.io.name}');
+
+        String signature;
+        if (component.io.name == 'flutter') {
+          // Always run the full license check on the flutter tree.  This tree is
+          // relatively small but changes frequently in ways that do not affect
+          // the license output, and we don't want to require updates to the golden
+          // signature for those changes.
+          signature = null;
+        } else {
+          signature = await component.signature;
+        }
+
+        // Check whether the golden file matches the signature of the current contents
+        // of this directory.
+        system.File goldenFile = new system.File(
+            path.join(argResults['golden'], 'licenses_${component.io.name}'));
+        String goldenSignature = await goldenFile.openRead()
+            .transform(UTF8.decoder).transform(new LineSplitter()).first;
+        Match goldenMatch = signaturePattern.matchAsPrefix(goldenSignature);
+        if (goldenMatch != null && goldenMatch.group(1) == signature) {
+          system.stderr.writeln('    Skipping this component - no change in signature');
+          continue;
+        }
+
+        Progress progress = new Progress(component.fileCount);
+
+        system.File outFile = new system.File(
+            path.join(argResults['out'], 'licenses_${component.io.name}'));
+        system.IOSink sink = outFile.openWrite();
+        if (signature != null)
+          sink.writeln('Signature: $signature\n');
+
+        List<License> licenses = new Set<License>.from(
+            component.getLicenses(progress).toList()).toList();
+
+        sink.writeln('UNUSED LICENSES:\n');
+        List<String> unusedLicenses = licenses
+          .where((License license) => !license.isUsed)
+          .map((License license) => license.toString())
+          .toList();
+        unusedLicenses.sort();
+        sink.writeln(unusedLicenses.join('\n\n'));
+        sink.writeln('~' * 80);
+
+        sink.writeln('USED LICENSES:\n');
+        List<License> usedLicenses = licenses.where((License license) => license.isUsed).toList();
+        List<String> output = usedLicenses.map((License license) => license.toString()).toList();
+        output.sort();
+        sink.writeln(output.join('\n\n'));
+        sink.writeln('Total license count: ${licenses.length}');
+
+        await sink.close();
+        progress.label = 'Done.';
+        system.stderr.writeln('');
+      }
     }
-    assert(() {
-      print('Total license count: ${licenses.length}');
-      progress.label = 'Done.';
-      print('$progress');
-      return true;
-    });
   } catch (e, stack) {
     system.stderr.writeln('failure: $e\n$stack');
     system.stderr.writeln('aborted.');

tools/licenses/pubspec.yaml

@@ -3,4 +3,4 @@ dependencies:
   path: ^1.3.0
   archive: ^1.0.24
   args: 0.13.7
-
+  crypto: ^2.0.1

travis/licenses.sh

+shopt -s nullglob
+
 echo "Verifying license script is still happy..."
-(cd flutter/tools/licenses; pub get; dart --checked lib/main.dart ../../.. > ../../../out/license-script-output)
+(cd flutter/tools/licenses; pub get; dart --checked lib/main.dart --src ../../.. --out ../../../out/license_script_output --golden ../../travis/licenses_golden)
+
+for f in out/license_script_output/licenses_*; do
+    if ! cmp -s flutter/travis/licenses_golden/$(basename $f) $f
+    then
+        echo "License script got different results than expected for $f."
+        echo "Please rerun the licenses script locally to verify that it is"
+        echo "correctly catching any new licenses for anything you may have"
+        echo "changed, and then update this file:"
+        echo "  flutter/sky/packages/sky_engine/LICENSE"
+        echo "For more information, see the script in:"
+        echo "  https://github.com/flutter/engine/tree/master/tools/licenses"
+        echo ""
+        diff -U 6 flutter/travis/licenses_golden/$(basename $f) $f
+        exit 1
+    fi
+done
 
-if cmp -s flutter/travis/licenses.golden out/license-script-output
-then
-    echo "Licenses are as expected."
-    exit 0
-else
-    echo "License script got different results than expected."
-    echo "Please rerun the licenses script locally to verify that it is"
-    echo "correctly catching any new licenses for anything you may have"
-    echo "changed, and then update this file:"
-    echo "  flutter/sky/packages/sky_engine/LICENSE"
-    echo "For more information, see the script in:"
-    echo "  https://github.com/flutter/engine/tree/master/tools/licenses"
-    echo ""
-    diff -U 6 flutter/travis/licenses.golden out/license-script-output
-    exit 1
-fi
+echo "Licenses are as expected."
+exit 0

travis/licenses_golden/licenses_lib

+Signature: 5565bfd8b8db2375e0c0cc7e9611b386
+
+UNUSED LICENSES:
+
+
+~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
+USED LICENSES:
+
+====================================================================================================
+LIBRARY: icu
+ORIGIN: ../../../base/third_party/icu/LICENSE
+TYPE: LicenseType.unknown
+FILE: ../../../lib/ftl/third_party/icu/icu_utf.cc
+FILE: ../../../lib/ftl/third_party/icu/icu_utf.h
+----------------------------------------------------------------------------------------------------
+ICU License - ICU 1.8.1 and later
+
+COPYRIGHT AND PERMISSION NOTICE
+
+Copyright (c) 1995-2009 International Business Machines Corporation and others
+
+All rights reserved.
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, and/or sell copies of the Software, and to permit persons
+to whom the Software is furnished to do so, provided that the above
+copyright notice(s) and this permission notice appear in all copies of
+the Software and that both the above copyright notice(s) and this
+permission notice appear in supporting documentation.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
+OF THIRD PARTY RIGHTS. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
+HOLDERS INCLUDED IN THIS NOTICE BE LIABLE FOR ANY CLAIM, OR ANY
+SPECIAL INDIRECT OR CONSEQUENTIAL DAMAGES, OR ANY DAMAGES WHATSOEVER
+RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
+CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
+CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+
+Except as contained in this notice, the name of a copyright holder
+shall not be used in advertising or otherwise to promote the sale, use
+or other dealings in this Software without prior written authorization
+of the copyright holder.
+====================================================================================================
+
+====================================================================================================
+LIBRARY: lib
+ORIGIN: ../../../lib/ftl/LICENSE
+TYPE: LicenseType.bsd
+FILE: ../../../lib/ftl/arraysize.h
+FILE: ../../../lib/ftl/arraysize_unittest.cc
+FILE: ../../../lib/ftl/build_config.h
+FILE: ../../../lib/ftl/command_line.cc
+FILE: ../../../lib/ftl/command_line.h
+FILE: ../../../lib/ftl/command_line_unittest.cc
+FILE: ../../../lib/ftl/compiler_specific.h
+FILE: ../../../lib/ftl/debug/debugger.cc
+FILE: ../../../lib/ftl/debug/debugger.h
+FILE: ../../../lib/ftl/files/directory.cc
+FILE: ../../../lib/ftl/files/directory.h
+FILE: ../../../lib/ftl/files/eintr_wrapper.h
+FILE: ../../../lib/ftl/files/file.cc
+FILE: ../../../lib/ftl/files/file.h
+FILE: ../../../lib/ftl/files/file_descriptor.cc
+FILE: ../../../lib/ftl/files/file_descriptor.h
+FILE: ../../../lib/ftl/files/file_unittest.cc
+FILE: ../../../lib/ftl/files/path.cc
+FILE: ../../../lib/ftl/files/path.h
+FILE: ../../../lib/ftl/files/path_unittest.cc
+FILE: ../../../lib/ftl/files/scoped_temp_dir.cc
+FILE: ../../../lib/ftl/files/scoped_temp_dir.h
+FILE: ../../../lib/ftl/files/scoped_temp_dir_unittest.cc
+FILE: ../../../lib/ftl/files/symlink.cc
+FILE: ../../../lib/ftl/files/symlink.h
+FILE: ../../../lib/ftl/files/unique_fd.cc
+FILE: ../../../lib/ftl/files/unique_fd.h
+FILE: ../../../lib/ftl/functional/closure.h
+FILE: ../../../lib/ftl/functional/make_copyable.h
+FILE: ../../../lib/ftl/functional/make_copyable_unittest.cc
+FILE: ../../../lib/ftl/functional/make_runnable.h
+FILE: ../../../lib/ftl/log_level.h
+FILE: ../../../lib/ftl/log_settings.cc
+FILE: ../../../lib/ftl/log_settings.h
+FILE: ../../../lib/ftl/log_settings_state.cc
+FILE: ../../../lib/ftl/log_settings_unittest.cc
+FILE: ../../../lib/ftl/logging.cc
+FILE: ../../../lib/ftl/logging.h
+FILE: ../../../lib/ftl/macros.h
+FILE: ../../../lib/ftl/memory/ref_counted.h
+FILE: ../../../lib/ftl/memory/ref_counted_internal.h
+FILE: ../../../lib/ftl/memory/ref_counted_unittest.cc
+FILE: ../../../lib/ftl/memory/ref_ptr.h
+FILE: ../../../lib/ftl/memory/ref_ptr_internal.h
+FILE: ../../../lib/ftl/memory/unique_object.h
+FILE: ../../../lib/ftl/memory/weak_ptr.h
+FILE: ../../../lib/ftl/memory/weak_ptr_internal.cc
+FILE: ../../../lib/ftl/memory/weak_ptr_internal.h
+FILE: ../../../lib/ftl/memory/weak_ptr_unittest.cc
+FILE: ../../../lib/ftl/strings/ascii.cc
+FILE: ../../../lib/ftl/strings/ascii.h
+FILE: ../../../lib/ftl/strings/ascii_unittest.cc
+FILE: ../../../lib/ftl/strings/concatenate.cc
+FILE: ../../../lib/ftl/strings/concatenate.h
+FILE: ../../../lib/ftl/strings/concatenate_unittest.cc
+FILE: ../../../lib/ftl/strings/split_string.cc
+FILE: ../../../lib/ftl/strings/split_string.h
+FILE: ../../../lib/ftl/strings/split_string_unittest.cc
+FILE: ../../../lib/ftl/strings/string_number_conversions.cc
+FILE: ../../../lib/ftl/strings/string_number_conversions.h
+FILE: ../../../lib/ftl/strings/string_number_conversions_unittest.cc
+FILE: ../../../lib/ftl/strings/string_printf.cc
+FILE: ../../../lib/ftl/strings/string_printf.h
+FILE: ../../../lib/ftl/strings/string_printf_unittest.cc
+FILE: ../../../lib/ftl/strings/string_view.cc
+FILE: ../../../lib/ftl/strings/string_view.h
+FILE: ../../../lib/ftl/strings/string_view_unittest.cc
+FILE: ../../../lib/ftl/strings/trim.cc
+FILE: ../../../lib/ftl/strings/trim.h
+FILE: ../../../lib/ftl/strings/trim_unittest.cc
+FILE: ../../../lib/ftl/strings/utf_codecs.cc
+FILE: ../../../lib/ftl/strings/utf_codecs.h
+FILE: ../../../lib/ftl/synchronization/cond_var.cc
+FILE: ../../../lib/ftl/synchronization/cond_var.h
+FILE: ../../../lib/ftl/synchronization/cond_var_unittest.cc
+FILE: ../../../lib/ftl/synchronization/mutex_unittest.cc
+FILE: ../../../lib/ftl/synchronization/sleep.cc
+FILE: ../../../lib/ftl/synchronization/sleep.h
+FILE: ../../../lib/ftl/synchronization/thread_annotations.h
+FILE: ../../../lib/ftl/synchronization/thread_annotations_unittest.cc
+FILE: ../../../lib/ftl/synchronization/thread_checker.h
+FILE: ../../../lib/ftl/synchronization/thread_checker_unittest.cc
+FILE: ../../../lib/ftl/synchronization/waitable_event.cc
+FILE: ../../../lib/ftl/synchronization/waitable_event.h
+FILE: ../../../lib/ftl/synchronization/waitable_event_unittest.cc
+FILE: ../../../lib/ftl/tasks/one_shot_timer.cc
+FILE: ../../../lib/ftl/tasks/one_shot_timer.h
+FILE: ../../../lib/ftl/tasks/one_shot_timer_unittest.cc
+FILE: ../../../lib/ftl/tasks/task_runner.cc
+FILE: ../../../lib/ftl/tasks/task_runner.h
+FILE: ../../../lib/ftl/time/stopwatch.cc
+FILE: ../../../lib/ftl/time/stopwatch.h
+FILE: ../../../lib/ftl/time/time_delta.h
+FILE: ../../../lib/ftl/time/time_point.cc
+FILE: ../../../lib/ftl/time/time_point.h
+FILE: ../../../lib/ftl/time/time_unittest.cc
+FILE: ../../../lib/tonic/converter/dart_converter.cc
+FILE: ../../../lib/tonic/converter/dart_converter.h
+FILE: ../../../lib/tonic/dart_message_handler.cc
+FILE: ../../../lib/tonic/dart_message_handler.h
+FILE: ../../../lib/tonic/dart_microtask_queue.cc
+FILE: ../../../lib/tonic/dart_microtask_queue.h
+FILE: ../../../lib/tonic/dart_sticky_error.cc
+FILE: ../../../lib/tonic/dart_sticky_error.h
+FILE: ../../../lib/tonic/debugger/dart_debugger.cc
+FILE: ../../../lib/tonic/debugger/dart_debugger.h
+FILE: ../../../lib/tonic/file_loader/file_loader.cc
+FILE: ../../../lib/tonic/file_loader/file_loader.h
+FILE: ../../../lib/tonic/logging/dart_error.cc
+FILE: ../../../lib/tonic/logging/dart_error.h
+FILE: ../../../lib/tonic/logging/dart_invoke.cc
+FILE: ../../../lib/tonic/logging/dart_invoke.h
+FILE: ../../../lib/tonic/parsers/packages_map.cc
+FILE: ../../../lib/tonic/parsers/packages_map.h
+FILE: ../../../lib/tonic/scopes/dart_api_scope.h
+FILE: ../../../lib/tonic/scopes/dart_isolate_scope.cc
+FILE: ../../../lib/tonic/scopes/dart_isolate_scope.h
+FILE: ../../../lib/tonic/typed_data/dart_byte_data.h
+FILE: ../../../lib/tonic/typed_data/int32_list.h
+FILE: ../../../lib/tonic/typed_data/uint8_list.h
+FILE: ../../../lib/zip/create_unzipper.cc
+FILE: ../../../lib/zip/create_unzipper.h
+FILE: ../../../lib/zip/memory_io.cc
+FILE: ../../../lib/zip/memory_io.h
+FILE: ../../../lib/zip/unique_unzipper.cc
+FILE: ../../../lib/zip/unique_unzipper.h
+FILE: ../../../lib/zip/unique_zipper.cc
+FILE: ../../../lib/zip/unique_zipper.h
+FILE: ../../../lib/zip/unzipper.cc
+FILE: ../../../lib/zip/unzipper.h
+FILE: ../../../lib/zip/zipper.cc
+FILE: ../../../lib/zip/zipper.h
+----------------------------------------------------------------------------------------------------
+Copyright 2016 The Fuchsia Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+====================================================================================================
+
+====================================================================================================
+LIBRARY: lib
+ORIGIN: ../../../lib/ftl/synchronization/monitor.cc + ../../../lib/ftl/LICENSE
+TYPE: LicenseType.bsd
+FILE: ../../../lib/ftl/synchronization/monitor.cc
+FILE: ../../../lib/ftl/synchronization/monitor.h
+FILE: ../../../lib/ftl/synchronization/mutex.cc
+FILE: ../../../lib/ftl/synchronization/mutex.h
+----------------------------------------------------------------------------------------------------
+Copyright 2016 The Fuchisa Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+====================================================================================================
+
+====================================================================================================
+LIBRARY: lib
+ORIGIN: ../../../lib/tonic/mx/mx_converter.h + ../../../lib/ftl/LICENSE
+TYPE: LicenseType.bsd
+FILE: ../../../lib/tonic/dart_args.h
+FILE: ../../../lib/tonic/dart_binding_macros.h
+FILE: ../../../lib/tonic/dart_class_library.cc
+FILE: ../../../lib/tonic/dart_class_library.h
+FILE: ../../../lib/tonic/dart_class_provider.cc
+FILE: ../../../lib/tonic/dart_class_provider.h
+FILE: ../../../lib/tonic/dart_library_natives.cc
+FILE: ../../../lib/tonic/dart_library_natives.h
+FILE: ../../../lib/tonic/dart_persistent_value.cc
+FILE: ../../../lib/tonic/dart_persistent_value.h
+FILE: ../../../lib/tonic/dart_state.cc
+FILE: ../../../lib/tonic/dart_state.h
+FILE: ../../../lib/tonic/dart_wrappable.cc
+FILE: ../../../lib/tonic/dart_wrappable.h
+FILE: ../../../lib/tonic/dart_wrapper_info.h
+FILE: ../../../lib/tonic/mx/mx_converter.h
+FILE: ../../../lib/tonic/typed_data/dart_byte_data.cc
+FILE: ../../../lib/tonic/typed_data/float32_list.cc
+FILE: ../../../lib/tonic/typed_data/float32_list.h
+FILE: ../../../lib/tonic/typed_data/float64_list.cc
+FILE: ../../../lib/tonic/typed_data/float64_list.h
+FILE: ../../../lib/tonic/typed_data/int32_list.cc
+FILE: ../../../lib/tonic/typed_data/uint8_list.cc
+----------------------------------------------------------------------------------------------------
+Copyright 2015 The Fuchsia Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+   * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+   * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+   * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+====================================================================================================
+Total license count: 4