Move pub into sdk/lib/_internal.

utils/pub/validator/name.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 name_validator;
-
-import 'dart:async';
-import 'dart:io';
-
-import 'package:pathos/path.dart' as path;
-
-import '../entrypoint.dart';
-import '../io.dart';
-import '../utils.dart';
-import '../validator.dart';
-
-/// Dart reserved words, from the Dart spec.
-final _RESERVED_WORDS = [
-  "assert", "break", "case", "catch", "class", "const", "continue", "default",
-  "do", "else", "extends", "false", "final", "finally", "for", "if", "in", "is",
-  "new", "null", "return", "super", "switch", "this", "throw", "true", "try",
-  "var", "void", "while", "with"
-];
-
-/// A validator that validates the name of the package and its libraries.
-class NameValidator extends Validator {
-  NameValidator(Entrypoint entrypoint)
-    : super(entrypoint);
-
-  Future validate() {
-    return new Future.sync(() {
-      _checkName(entrypoint.root.name, 'Package name "${entrypoint.root.name}"',
-          isPackage: true);
-
-      var libraries = _libraries;
-      for (var library in libraries) {
-        var libName = path.basenameWithoutExtension(library);
-        _checkName(libName, 'The name of "$library", "$libName",',
-            isPackage: false);
-      }
-
-      if (libraries.length == 1) {
-        var libName = path.basenameWithoutExtension(libraries[0]);
-        if (libName == entrypoint.root.name) return;
-        warnings.add('The name of "${libraries[0]}", "$libName", should match '
-            'the name of the package, "${entrypoint.root.name}".\n'
-            'This helps users know what library to import.');
-      }
-    });
-  }
-
-  /// Returns a list of all libraries in the current package as paths relative
-  /// to the package's root directory.
-  List<String> get _libraries {
-    var libDir = path.join(entrypoint.root.dir, "lib");
-    if (!dirExists(libDir)) return [];
-    return listDir(libDir, recursive: true)
-        .map((file) => path.relative(file, from: path.dirname(libDir)))
-        .where((file) => !path.split(file).contains("src") &&
-                         path.extension(file) == '.dart')
-        .toList();
-  }
-
-  void _checkName(String name, String description, {bool isPackage}) {
-    // Packages names are more stringent than libraries.
-    var messages = isPackage ? errors : warnings;
-
-    if (name == "") {
-      errors.add("$description may not be empty.");
-    } else if (!new RegExp(r"^[a-zA-Z0-9_]*$").hasMatch(name)) {
-      messages.add("$description may only contain letters, numbers, and "
-          "underscores.\n"
-          "Using a valid Dart identifier makes the name usable in Dart code.");
-    } else if (!new RegExp(r"^[a-zA-Z]").hasMatch(name)) {
-      messages.add("$description must begin with letter.\n"
-          "Using a valid Dart identifier makes the name usable in Dart code.");
-    } else if (_RESERVED_WORDS.contains(name.toLowerCase())) {
-      messages.add("$description may not be a reserved word in Dart.\n"
-          "Using a valid Dart identifier makes the name usable in Dart code.");
-    } else if (new RegExp(r"[A-Z]").hasMatch(name)) {
-      warnings.add('$description should be lower-case. Maybe use '
-          '"${_unCamelCase(name)}"?');
-    }
-  }
-
-  String _unCamelCase(String source) {
-    var builder = new StringBuffer();
-    var lastMatchEnd = 0;
-    for (var match in new RegExp(r"[a-z]([A-Z])").allMatches(source)) {
-      builder
-        ..write(source.substring(lastMatchEnd, match.start + 1))
-        ..write("_")
-        ..write(match.group(1).toLowerCase());
-      lastMatchEnd = match.end;
-    }
-    builder.write(source.substring(lastMatchEnd));
-    return builder.toString().toLowerCase();
-  }
-}