Remove frogsh.

dart/frog/file_system_node.dart

-// Copyright (c) 2011, 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('file_system_node');
-
-#import('file_system.dart');
-#import('lib/node/node.dart');
-
-/** File system implementation using nodejs api's (for self-hosted compiler). */
-class NodeFileSystem implements FileSystem {
-  void writeString(String outfile, String text) {
-    fs.writeFileSync(outfile, text);
-  }
-
-  String readAll(String filename) {
-    return fs.readFileSync(filename, 'utf8');
-  }
-
-  bool fileExists(String filename) {
-    return path.existsSync(filename);
-  }
-
-  void createDirectory(String path, [bool recursive = false]) {
-    if (!recursive) {
-      fs.mkdirSync(path);
-      return;
-    }
-
-    // See how much of the path already exists and how much we need to create.
-    final parts = path.split('/');
-    var existing = '.';
-    var part;
-    for (part = 0; part < parts.length; part++) {
-      final subpath = joinPaths(existing, parts[part]);
-
-      try {
-        final stat = fs.statSync(subpath);
-
-        if (stat.isDirectory()) {
-          existing = subpath;
-        } else {
-          throw 'Cannot create directory $path because $existing exists and ' +
-              'is not a directory.';
-        }
-      } catch (var e) {
-        // Ugly hack. We only want to catch ENOENT exceptions from fs.statSync
-        // which means the path we're trying doesn't exist. Since this is coming
-        // from node, we can't check the exception's type.
-        if (e.toString().indexOf('ENOENT') != -1) break;
-
-        // Re-throw any other exceptions.
-        throw e;
-      }
-    }
-
-    // Create the remaining directories.
-    for (; part < parts.length; part++) {
-      existing = joinPaths(existing, parts[part]);
-      fs.mkdirSync(existing);
-    }
-  }
-
-  void removeDirectory(String path, [bool recursive = false]) {
-    if (recursive) {
-      // Remove the contents first.
-      for (final file in fs.readdirSync(path)) {
-        final subpath = joinPaths(path, file);
-        final stat = fs.statSync(subpath);
-
-        if (stat.isDirectory()) {
-          // Recurse into subdirectories.
-          removeDirectory(subpath, recursive: true);
-        } else if (stat.isFile()) {
-          // Try to remove the file.
-          fs.unlinkSync(subpath);
-        }
-      }
-    }
-
-    fs.rmdirSync(path);
-  }
-}