Move pub into sdk/lib/_internal.

utils/pub/validator/pubspec_field.dart

-// Copyright (c) 2012, 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 pubspec_field_validator;
-
-import 'dart:async';
-
-import '../entrypoint.dart';
-import '../system_cache.dart';
-import '../validator.dart';
-import '../version.dart';
-
-/// A validator that checks that the pubspec has valid "author" and "homepage"
-/// fields.
-class PubspecFieldValidator extends Validator {
-  PubspecFieldValidator(Entrypoint entrypoint)
-    : super(entrypoint);
-
-  Future validate() {
-    // The types of all fields are validated when the pubspec is parsed.
-    var pubspec = entrypoint.root.pubspec;
-    var author = pubspec.fields['author'];
-    var authors = pubspec.fields['authors'];
-    if (author == null && authors == null) {
-      errors.add('Your pubspec.yaml must have an "author" or "authors" field.');
-    } else {
-      if (authors == null) authors = [author];
-
-      var hasName = new RegExp(r"^ *[^< ]");
-      var hasEmail = new RegExp(r"<[^>]+> *$");
-      for (var authorName in authors) {
-        if (!hasName.hasMatch(authorName)) {
-          warnings.add('Author "$authorName" in pubspec.yaml should have a '
-              'name.');
-        }
-        if (!hasEmail.hasMatch(authorName)) {
-          warnings.add('Author "$authorName" in pubspec.yaml should have an '
-              'email address\n(e.g. "name <email>").');
-        }
-      }
-    }
-
-    var homepage = pubspec.fields['homepage'];
-    if (homepage == null) {
-      errors.add('Your pubspec.yaml is missing a "homepage" field.');
-    }
-
-    var description = pubspec.fields['description'];
-    if (description == null) {
-      errors.add('Your pubspec.yaml is missing a "description" field.');
-    }
-
-    var version = pubspec.fields['version'];
-    if (version == null) {
-      errors.add('Your pubspec.yaml is missing a "version" field.');
-    }
-
-    return new Future.value();
-  }
-}