Delete a bunch of packages that are now on GitHub.

pkg/oauth2/lib/src/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.
-
-library utils;
-
-import 'dart:async';
-
-/// Adds additional query parameters to [url], overwriting the original
-/// parameters if a name conflict occurs.
-Uri addQueryParameters(Uri url, Map<String, String> parameters) {
-  var queryMap = queryToMap(url.query);
-  queryMap.addAll(parameters);
-  return url.resolve("?${mapToQuery(queryMap)}");
-}
-
-/// Convert a URL query string (or `application/x-www-form-urlencoded` body)
-/// into a [Map] from parameter names to values.
-Map<String, String> queryToMap(String queryList) {
-  var map = {};
-  for (var pair in queryList.split("&")) {
-    var split = split1(pair, "=");
-    if (split.isEmpty) continue;
-    var key = urlDecode(split[0]);
-    var value = split.length > 1 ? urlDecode(split[1]) : "";
-    map[key] = value;
-  }
-  return map;
-}
-
-/// Convert a [Map] from parameter names to values to a URL query string.
-String mapToQuery(Map<String, String> map) {
-  var pairs = <List<String>>[];
-  map.forEach((key, value) {
-    key = Uri.encodeQueryComponent(key);
-    value = (value == null || value.isEmpty)
-            ? null
-            : Uri.encodeQueryComponent(value);
-    pairs.add([key, value]);
-  });
-  return pairs.map((pair) {
-    if (pair[1] == null) return pair[0];
-    return "${pair[0]}=${pair[1]}";
-  }).join("&");
-}
-
-/// Decode a URL-encoded string. Unlike [Uri.decodeComponent], this includes
-/// replacing `+` with ` `.
-String urlDecode(String encoded) =>
-  Uri.decodeComponent(encoded.replaceAll("+", " "));
-
-/// Like [String.split], but only splits on the first occurrence of the pattern.
-/// This will always return a list of two elements or fewer.
-List<String> split1(String toSplit, String pattern) {
-  if (toSplit.isEmpty) return <String>[];
-
-  var index = toSplit.indexOf(pattern);
-  if (index == -1) return [toSplit];
-  return [toSplit.substring(0, index),
-      toSplit.substring(index + pattern.length)];
-}
-
-/// A WWW-Authenticate header value, parsed as per [RFC 2617][].
-///
-/// [RFC 2617]: http://tools.ietf.org/html/rfc2617
-class AuthenticateHeader {
-  final String scheme;
-  final Map<String, String> parameters;
-
-  AuthenticateHeader(this.scheme, this.parameters);
-
-  /// Parses a header string. Throws a [FormatException] if the header is
-  /// invalid.
-  factory AuthenticateHeader.parse(String header) {
-    var split = split1(header, ' ');
-    if (split.length == 0) {
-      throw new FormatException('Invalid WWW-Authenticate header: "$header"');
-    } else if (split.length == 1 || split[1].trim().isEmpty) {
-      return new AuthenticateHeader(split[0].toLowerCase(), {});
-    }
-    var scheme = split[0].toLowerCase();
-    var paramString = split[1];
-
-    // From http://www.w3.org/Protocols/rfc2616/rfc2616-sec2.html.
-    var tokenChar = r'[^\0-\x1F()<>@,;:\\"/\[\]?={} \t\x7F]';
-    var quotedStringChar = r'(?:[^\0-\x1F\x7F"]|\\.)';
-    var regexp = new RegExp('^ *($tokenChar+)="($quotedStringChar*)" *(, *)?');
-
-    var parameters = {};
-    var match;
-    do {
-      match = regexp.firstMatch(paramString);
-      if (match == null) {
-        throw new FormatException('Invalid WWW-Authenticate header: "$header"');
-      }
-
-      paramString = paramString.substring(match.end);
-      parameters[match.group(1).toLowerCase()] = match.group(2);
-    } while (match.group(3) != null);
-
-    if (!paramString.trim().isEmpty) {
-      throw new FormatException('Invalid WWW-Authenticate header: "$header"');
-    }
-
-    return new AuthenticateHeader(scheme, parameters);
-  }
-}
-
-/// Returns a [Future] that asynchronously completes to `null`.
-Future get async => new Future.delayed(const Duration(milliseconds: 0),
-                                       () => null);