Merge the dart:uri library into dart:core and update the Uri class

tests/corelib/uri_path_test.dart

+// 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.
+
+import "package:expect/expect.dart";
+
+void testInvalidArguments() {
+}
+
+void testPath() {
+  test(s, uri) {
+    Expect.equals(s, uri.toString());
+    Expect.equals(uri, Uri.parse(s));
+  }
+
+  test("urn:", new Uri(scheme: "urn"));
+  test("urn:xxx", new Uri(scheme: "urn", path: "xxx"));
+  test("urn:xxx:yyy", new Uri(scheme: "urn", path: "xxx:yyy"));
+}
+
+void testPathSegments() {
+  test(String path, List<String> segments) {
+    void check(uri) {
+      Expect.equals(path, uri.path);
+      Expect.equals(path, uri.toString());
+      Expect.listEquals(segments, uri.pathSegments);
+    }
+
+    var uri1 = new Uri(pathSegments: segments);
+    var uri2 = new Uri(path: path);
+    var uri3 = Uri.parse(path);
+    check(uri1);
+    check(uri2);
+    check(uri3);
+    Expect.equals(uri1, uri3);
+    Expect.equals(uri2, uri3);
+  }
+
+  test("", []);
+  test("%20", [" "]);
+  test("%20/%20%20", [" ", "  "]);
+  test("A", ["A"]);
+  test("%C3%B8", ["ø"]);
+  test("%C3%B8/%C3%A5", ["ø", "å"]);
+  test("%C8%A4/%E5%B9%B3%E4%BB%AE%E5%90%8D", ["Ȥ", "平仮名"]);
+  test("A/b", ["A", "b"]);
+  test("A/%25", ["A", "%"]);
+  test("%2F/a%2Fb", ["/", "a/b"]);
+  test("name;v=1.1", ["name;v=1.1"]);
+  test("name,v=1.1", ["name,v=1.1"]);
+  test("name;v=1.1/name,v=1.1", ["name;v=1.1", "name,v=1.1"]);
+
+  var unreserved = "-._~0123456789"
+                   "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
+                   "abcdefghijklmnopqrstuvwxyz";
+  var subDelimiters = r"!$&'()*+,;=";
+  var additionalPathChars = ":@";
+  var pchar = unreserved + subDelimiters + additionalPathChars;
+
+  var encoded = new StringBuffer();
+  var unencoded = new StringBuffer();
+  for (int i = 32; i < 128; i++) {
+    if (pchar.indexOf(new String.fromCharCode(i)) != -1) {
+      encoded.writeCharCode(i);
+    } else {
+      encoded.write("%");
+      encoded.write(i.toRadixString(16).toUpperCase());
+    }
+    unencoded.writeCharCode(i);
+  }
+  encoded = encoded.toString();
+  unencoded = unencoded.toString();
+  print(encoded);
+  print(unencoded);
+  test(encoded, [unencoded]);
+  test(encoded + "/" + encoded, [unencoded, unencoded]);
+}
+
+main() {
+  testInvalidArguments();
+  testPath();
+  testPathSegments();
+}