Split the URI library across multiple files.

dart/lib/uri/helpers.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.
+
+String merge(String base, String reference) {
+  if (base == "") return "/$reference";
+  return "${base.substring(0, base.lastIndexOf("/") + 1)}$reference";
+}
+
+String removeDotSegments(String path) {
+  List<String> output = [];
+  bool appendSlash = false;
+  for (String segment in path.split("/")) {
+    appendSlash = false;
+    if (segment == "..") {
+      if (!output.isEmpty() &&
+          ((output.length != 1) || (output[0] != ""))) output.removeLast();
+      appendSlash = true;
+    } else if ("." == segment) {

[ngeoffray, 2012/05/11 12:41:23]

consistency: put segment lhs

[ahe, 2012/05/11 12:51:32]

I did not change this code (but I think I wrote it originally). Let me just send
you a subversion based CL to create this file.

+      appendSlash = true;
+    } else {
+      output.add(segment);
+    }
+  }
+  if (appendSlash) output.add("");
+  return Strings.join(output, "/");
+}