Make the HttpParser and HttpUtil classes private

runtime/bin/http_utils.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.
+
+class _HttpUtils {
+  static String decodeUrlEncodedString(String urlEncoded) {
+    void invalidEscape() {
+      // TODO(sgjesse): Handle the error.
+    }
+
+    StringBuffer result = new StringBuffer();
+    for (int ii = 0; urlEncoded.length > ii; ++ii) {
+      if ('+' == urlEncoded[ii]) {
+        result.add(' ');
+      } else if ('%' == urlEncoded[ii] &&
+                 urlEncoded.length - 2 > ii) {
+        try {
+          int charCode =
+            Math.parseInt('0x' + urlEncoded.substring(ii + 1, ii + 3));
+          if (charCode <= 0x7f) {
+            result.add(new String.fromCharCodes([charCode]));
+            ii += 2;
+          } else {
+            invalidEscape();
+            return '';
+          }
+        } catch (BadNumberFormatException ignored) {
+          invalidEscape();
+          return '';
+        }
+      } else {
+        result.add(urlEncoded[ii]);
+      }
+    }
+    return result.toString();
+  }
+
+  static Map<String, String> splitQueryString(String queryString) {
+    Map<String, String> result = new Map<String, String>();
+    int currentPosition = 0;
+    while (currentPosition < queryString.length) {
+      int position = queryString.indexOf("=", currentPosition);
+      if (position == -1) {
+        break;
+      }
+      String name = queryString.substring(currentPosition, position);
+      currentPosition = position + 1;
+      position = queryString.indexOf("&", currentPosition);
+      String value;
+      if (position == -1) {
+        value = queryString.substring(currentPosition);
+        currentPosition = queryString.length;
+      } else {
+        value = queryString.substring(currentPosition, position);
+        currentPosition = position + 1;
+      }
+      result[_HttpUtils.decodeUrlEncodedString(name)] =
+        _HttpUtils.decodeUrlEncodedString(value);
+    }
+    return result;
+  }
+}