Reorganize some pub libraries.

sdk/lib/_internal/pub/lib/src/path_source.dart

Index: sdk/lib/_internal/pub/lib/src/path_source.dart
diff --git a/sdk/lib/_internal/pub/lib/src/path_source.dart b/sdk/lib/_internal/pub/lib/src/path_source.dart
deleted file mode 100644
index 597205051790cc882398ee0917833e519f289f42..0000000000000000000000000000000000000000
--- a/sdk/lib/_internal/pub/lib/src/path_source.dart
+++ /dev/null
@@ -1,118 +0,0 @@
-// 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 path_source;
-
-import 'dart:async';
-import 'dart:io';
-
-import 'package:pathos/path.dart' as path;
-
-import 'log.dart' as log;
-
-import 'io.dart';
-import 'package.dart';
-import 'pubspec.dart';
-import 'version.dart';
-import 'source.dart';
-import 'utils.dart';
-
-/// A package [Source] that installs packages from a given local file path.
-class PathSource extends Source {
-  final name = 'path';
-  final shouldCache = false;
-
-  Future<Pubspec> describeUncached(PackageId id) {
-    return new Future.sync(() {
-      _validatePath(id.name, id.description);
-      return new Pubspec.load(id.name, id.description["path"],
-          systemCache.sources);
-    });
-  }
-
-  bool descriptionsEqual(description1, description2) {
-    // Compare real paths after normalizing and resolving symlinks.
-    var path1 = canonicalize(description1["path"]);
-    var path2 = canonicalize(description2["path"]);
-    return path1 == path2;
-  }
-
-  Future<bool> install(PackageId id, String destination) {
-    return new Future.sync(() {
-      try {
-        _validatePath(id.name, id.description);
-      } on FormatException catch(err) {
-        return false;
-      }
-
-      createPackageSymlink(id.name, id.description["path"], destination,
-          relative: id.description["relative"]);
-      return true;
-    });
-  }
-
-  /// Parses a path dependency. This takes in a path string and returns a map.
-  /// The "path" key will be the original path but resolved relative to the
-  /// containing path. The "relative" key will be `true` if the original path
-  /// was relative.
-  ///
-  /// A path coming from a pubspec is a simple string. From a lock file, it's
-  /// an expanded {"path": ..., "relative": ...} map.
-  dynamic parseDescription(String containingPath, description,
-                           {bool fromLockFile: false}) {
-    if (fromLockFile) {
-      if (description is! Map) {
-        throw new FormatException("The description must be a map.");
-      }
-
-      if (description["path"] is! String) {
-        throw new FormatException("The 'path' field of the description must "
-            "be a string.");
-      }
-
-      if (description["relative"] is! bool) {
-        throw new FormatException("The 'relative' field of the description "
-            "must be a boolean.");
-      }
-
-      return description;
-    }
-
-    if (description is! String) {
-      throw new FormatException("The description must be a path string.");
-    }
-
-    // Resolve the path relative to the containing file path, and remember
-    // whether the original path was relative or absolute.
-    bool isRelative = path.isRelative(description);
-    if (path.isRelative(description)) {
-      // Can't handle relative paths coming from pubspecs that are not on the
-      // local file system.
-      assert(containingPath != null);
-
-      description = path.join(path.dirname(containingPath), description);
-    }
-
-    return {
-      "path": description,
-      "relative": isRelative
-    };
-  }
-
-  /// Ensures that [description] is a valid path description. It must be a map,
-  /// with a "path" key containing a path that points to an existing directory.
-  /// Throws an [ApplicationException] if the path is invalid.
-  void _validatePath(String name, description) {
-    var dir = description["path"];
-
-    if (dirExists(dir)) return;
-
-    if (fileExists(dir)) {
-      fail("Path dependency for package '$name' must refer to a "
-           "directory, not a file. Was '$dir'.");
-    }
-
-    fail("Could not find package '$name' at '$dir'.");
-  }
-}