Move pub into sdk/lib/_internal.

utils/pub/validator/utf8_readme.dart

-// Copyright (c) 2013, 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.
-
-library utf8_readme_validator;
-
-import 'dart:async';
-import 'dart:utf';
-
-import 'package:pathos/path.dart' as path;
-
-import '../entrypoint.dart';
-import '../io.dart';
-import '../utils.dart';
-import '../validator.dart';
-
-/// Validates that a package's README is valid utf-8.
-class Utf8ReadmeValidator extends Validator {
-  Utf8ReadmeValidator(Entrypoint entrypoint)
-    : super(entrypoint);
-
-  Future validate() {
-    return new Future.sync(() {
-      var readme = entrypoint.root.readmePath;
-      if (readme == null) return;
-      var bytes = readBinaryFile(readme);
-      try {
-        // The second and third arguments here are the default values. The
-        // fourth tells [decodeUtf8] to throw an ArgumentError if `bytes` isn't
-        // valid utf-8.
-        decodeUtf8(bytes, 0, null, null);
-      } on ArgumentError catch (_) {
-        warnings.add("$readme contains invalid UTF-8.\n"
-            "This will cause it to be displayed incorrectly on "
-                "pub.dartlang.org.");
-      }
-    });
-  }
-}
-