Write custom URI-parser, to avoid using regexp.

tests/corelib/uri_parse_test.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.
+
+import "package:expect/expect.dart";
+
+
+void testUriCombi() {
+  var schemes = ["", "file", "ws", "ftp"];
+  var fragments = ["", "#", "#f", "#fragment", "#l:?/"];
+  var queries = ["", "?", "?q", "?query", "?q:/"];
+  var paths = ["/", "/x", "/x/y", "/x/y/", "/x:y"];
+  var userInfos = ["", "x", "xxx", "x:4", "xxx:444", "x:4:x"];
+  var hosts = ["", "h", "hhh", "h:4", "hhh:444", "[::1.2.3.4]"];
+
+  void check(uriString, scheme, fragment, query, path, user, host) {
+    var uri = Uri.parse(uriString);
+    Expect.equals(scheme, uri.scheme);
+    var uriFragment = uri.fragment;
+    if (fragment.startsWith('#')) uriFragment = "#$uriFragment";
+    Expect.equals(fragment, uriFragment);
+    var uriQuery = uri.query;
+    if (query.startsWith('?')) uriQuery = "?$uriQuery";
+    Expect.equals(query, uriQuery);
+    Expect.equals(path, uri.path);
+    Expect.equals(user, uri.userInfo);
+    var uriHost = uri.host;
+    if (host.startsWith("[")) uriHost = "[$uriHost]";
+    if (uri.port != 0) uriHost += ":${uri.port}";
+    Expect.equals(host, uriHost);
+  }
+
+  for (var scheme in schemes) {
+    for (var fragment in fragments) {
+      for (var query in queries) {
+        for (var path in paths) {
+          for (var user in userInfos) {
+            for (var host in hosts) {
+              var auth = host;
+              var s = scheme;
+              if (user.isNotEmpty) auth = "$user@$auth";
+              if (auth.isNotEmpty) auth = "//$auth";
+              check("$scheme${scheme.isEmpty ? "" : ":"}"
+                        "$auth$path$query$fragment",
+                    scheme,
+                    fragment,
+                    query,
+                    path,
+                    user,
+                    host);
+            }
+          }
+        }
+      }
+    }
+  }
+}
+
+void main() {
+  testUriCombi();
+}