Check in pkg/stack_trace/lib/src/utils.dart.

Review URL: https://codereview.chromium.org//13371002

git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart/pkg/stack_trace@20710 260f80e4-7a28-3924-810f-c04153c831b5

pkgs/stack_trace/lib/src/utils.dart

diff --git a/pkgs/stack_trace/lib/src/utils.dart b/pkgs/stack_trace/lib/src/utils.dart
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+++ b/pkgs/stack_trace/lib/src/utils.dart
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+// 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 utils;
+
+import 'dart:io';
+import 'dart:uri';
+
+import 'package:pathos/path.dart' as path;
+
+/// Converts a `file:` [Uri] to a local path string.
+String fileUriToPath(Uri uri) {
+  if (uri.scheme != 'file') {
+    throw new ArgumentError("Uri $uri must have scheme 'file:'.");
+  }
+  if (Platform.operatingSystem != 'windows') return uri.path;
+  return uri.path.replaceFirst("/", "").replaceAll("/", "\\");
+}
+
+/// Converts a local path string to a `file:` [Uri].
+Uri pathToFileUri(String pathString) {
+  pathString = path.absolute(pathString);
+  if (Platform.operatingSystem != 'windows') {
+    return Uri.parse('file://$pathString');
+  } else {
+    return Uri.parse('file:///${pathString.replaceAll("\\", "/")}');
+  }
+}