Use little endian

Author: szakarias

pkg/_pub_shared/lib/format/encoding.dart

@@ -10,7 +10,7 @@ import 'dart:typed_data';
 String encodeIntsAsBigEndianBase64String(List<int> dataPoints) {
   final byteData = ByteData(4 * dataPoints.length);
   for (int i = 0; i < dataPoints.length; i++) {
-    byteData.setUint32(4 * i, dataPoints[i]);
+    byteData.setUint32(4 * i, dataPoints[i], Endian.little);
   }
   return base64Encode(byteData.buffer.asUint8List());
 }
@@ -22,7 +22,7 @@ List<int> decodeIntsFromBigEndianBase64String(String encoded) {
   final dataPoints = List.filled(resLength, -1);
   final sublist = ByteData.sublistView(bytes);
   for (int i = 0; i < resLength; i++) {
-    dataPoints[i] = sublist.getUint32(4 * i);
+    dataPoints[i] = sublist.getUint32(4 * i, Endian.little);
   }
   return dataPoints;
 }

pkg/_pub_shared/test/format/encoding_test.dart

@@ -9,7 +9,7 @@ void main() {
   test('encode/decode success', () {
     final data = [1, 2, 3, 4, 5, 6, 7, 8, 9];
     final encoded = encodeIntsAsBigEndianBase64String(data);
-    expect(encoded, 'AAAAAQAAAAIAAAADAAAABAAAAAUAAAAGAAAABwAAAAgAAAAJ');
+    expect(encoded, 'AQAAAAIAAAADAAAABAAAAAUAAAAGAAAABwAAAAgAAAAJAAAA');
     expect(decodeIntsFromBigEndianBase64String(encoded), data);
   });
 
@@ -23,7 +23,7 @@ void main() {
   test('encode/decode failure with negative integers', () {
     final data = <int>[-1, -2];
     final encoded = encodeIntsAsBigEndianBase64String(data);
-    expect(encoded, '//////////4=');
+    expect(encoded, '//////7///8=');
     expect(decodeIntsFromBigEndianBase64String(encoded), isNot(data));
   });
 }