Add a "pub dependencies" command.

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

Index: sdk/lib/_internal/pub/lib/src/directory_tree.dart
diff --git a/sdk/lib/_internal/pub/lib/src/directory_tree.dart b/sdk/lib/_internal/pub/lib/src/directory_tree.dart
deleted file mode 100644
index b0d07109b622751316d2ffc306f8c3717460a54d..0000000000000000000000000000000000000000
--- a/sdk/lib/_internal/pub/lib/src/directory_tree.dart
+++ /dev/null
@@ -1,134 +0,0 @@
-// 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.
-
-/// A simple library for rendering a list of files as a directory tree.
-library pub.directory_tree;
-
-import 'package:path/path.dart' as path;
-
-import 'utils.dart';
-
-/// Draws a directory tree for the given list of files. Given a list of files
-/// like:
-///
-///     TODO
-///     example/console_example.dart
-///     example/main.dart
-///     example/web copy/web_example.dart
-///     test/absolute_test.dart
-///     test/basename_test.dart
-///     test/dirname_test.dart
-///     test/extension_test.dart
-///     test/is_absolute_test.dart
-///     test/is_relative_test.dart
-///     test/join_test.dart
-///     test/normalize_test.dart
-///     test/relative_test.dart
-///     test/split_test.dart
-///     .gitignore
-///     README.md
-///     lib/path.dart
-///     pubspec.yaml
-///     test/all_test.dart
-///     test/path_posix_test.dart
-///     test/path_windows_test.dart
-///
-/// this will render:
-///
-///     |-- .gitignore
-///     |-- README.md
-///     |-- TODO
-///     |-- example
-///     |   |-- console_example.dart
-///     |   |-- main.dart
-///     |   '-- web copy
-///     |       '-- web_example.dart
-///     |-- lib
-///     |   '-- path.dart
-///     |-- pubspec.yaml
-///     '-- test
-///         |-- absolute_test.dart
-///         |-- all_test.dart
-///         |-- basename_test.dart
-///         | (7 more...)
-///         |-- path_windows_test.dart
-///         |-- relative_test.dart
-///         '-- split_test.dart
-///
-/// If [baseDir] is passed, it will be used as the root of the tree.
-String generateTree(List<String> files, {String baseDir}) {
-  // Parse out the files into a tree of nested maps.
-  var root = {};
-  for (var file in files) {
-    if (baseDir != null) file = path.relative(file, from: baseDir);
-    var parts = path.split(file);
-    var directory = root;
-    for (var part in path.split(file)) {
-      directory = directory.putIfAbsent(part, () => {});
-    }
-  }
-
-  // Walk the map recursively and render to a string.
-  var buffer = new StringBuffer();
-  _draw(buffer, '', false, null, root);
-  return buffer.toString();
-}
-
-void _drawLine(StringBuffer buffer, String prefix, bool isLastChild,
-               String name) {
-  // Print lines.
-  buffer.write(prefix);
-  if (name != null) {
-    if (isLastChild) {
-      buffer.write("'-- ");
-    } else {
-      buffer.write("|-- ");
-    }
-  }
-
-  // Print name.
-  buffer.writeln(name);
-}
-
-String _getPrefix(bool isRoot, bool isLast) {
-  if (isRoot) return "";
-  if (isLast) return "    ";
-  return "|   ";
-}
-
-void _draw(StringBuffer buffer, String prefix, bool isLast,
-                 String name, Map children) {
-  // Don't draw a line for the root node.
-  if (name != null) _drawLine(buffer, prefix, isLast, name);
-
-  // Recurse to the children.
-  var childNames = ordered(children.keys);
-
-  _drawChild(bool isLastChild, String child) {
-    var childPrefix = _getPrefix(name == null, isLast);
-    _draw(buffer, '$prefix$childPrefix', isLastChild, child, children[child]);
-  }
-
-  if (name == null || childNames.length <= 10) {
-    // Not too many, so show all the children.
-    for (var i = 0; i < childNames.length; i++) {
-      _drawChild(i == childNames.length - 1, childNames[i]);
-    }
-  } else {
-    // Show the first few.
-    _drawChild(false, childNames[0]);
-    _drawChild(false, childNames[1]);
-    _drawChild(false, childNames[2]);
-
-    // Elide the middle ones.
-    buffer.write(prefix);
-    buffer.write(_getPrefix(name == null, isLast));
-    buffer.writeln('| (${childNames.length - 6} more...)');
-
-    // Show the last few.
-    _drawChild(false, childNames[childNames.length - 3]);
-    _drawChild(false, childNames[childNames.length - 2]);
-    _drawChild(true, childNames[childNames.length - 1]);
-  }
-}