Move utils/{uri, utf8} to lib/{uri, utf8} .

utils/utf8/utf8.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.
-
-#library('utf8');
-
-class Utf8Decoder implements Iterable<int>, Iterator<int> {
-  final List<int> bytes;
-  int offset;
-  final int end;
-
-  Utf8Decoder(List<int> this.bytes, int offset, int length)
-      : this.offset = offset, end = offset + length;
-
-  /** Decode the remaininder of the characters in this decoder
-    * into a [List<int>].
-    */
-  List<int> decodeRest() {
-    List<int> result = <int>[];
-    for (int char in this) result.add(char);
-    return result;
-  }
-
-  Iterator<int> iterator() => this;
-
-  bool hasNext() => offset < end;
-
-  int next() {
-    assert(hasNext());
-    int byte = bytes[offset++];
-    if (byte < 0x80) {
-      return byte;
-    }
-    if (byte < 0xC2) {
-      throw new Exception('Cannot decode UTF-8 @ $offset');
-    }
-    if (byte < 0xE0) {
-      int char = (byte & 0x1F) << 6;
-      char += decodeTrailing(bytes[offset++]);
-      if (char < 0x80) {
-        throw new Exception('Cannot decode UTF-8 @ ${offset-1}');
-      }
-      return char;
-    }
-    if (byte < 0xF0) {
-      int char = (byte & 0x0F) << 6;
-      char += decodeTrailing(bytes[offset++]);
-      char <<= 6;
-      char += decodeTrailing(bytes[offset++]);
-      if (char < 0x800 || (0xD800 <= char && char <= 0xDFFF)) {
-        throw new Exception('Cannot decode UTF-8 @ ${offset-2}');
-      }
-      return char;
-    }
-    if (byte < 0xF8) {
-      int char = (byte & 0x07) << 6;
-      char += decodeTrailing(bytes[offset++]);
-      char <<= 6;
-      char += decodeTrailing(bytes[offset++]);
-      char <<= 6;
-      char += decodeTrailing(bytes[offset++]);
-      if (char < 0x10000) {
-        throw new Exception('Cannot decode UTF-8 @ ${offset-3}');
-      }
-      return char;
-    }
-    throw new Exception('Cannot decode UTF-8 @ ${offset}');
-  }
-
-  static int decodeTrailing(int byte) {
-    if (byte < 0x80 || 0xBF < byte) {
-      throw new Exception('Cannot decode UTF-8 $byte');
-    } else {
-      return byte & 0x3F;
-    }
-  }
-
-  static List<int> decodeUtf8(List<int> bytes) {
-    return new Utf8Decoder(bytes, 0, bytes.length).decodeRest();
-  }
-}