nem_mosaics: Refactor and use Python 2

firmware/nem_mosaics.py

@@ -1,8 +1,13 @@
-#!/usr/bin/env python3
-import json, os
+#!/usr/bin/env python2
+import json, os, sys
+
+import collections, numbers
+
 from google.protobuf import json_format
 from itertools import chain
-import protob.types_pb2 as types
+
+sys.path.insert(0, os.path.join(os.path.dirname(__file__), "protob"))
+import types_pb2 as types
 
 HEADER_TEMPLATE = """
 // This file is automatically generated by nem_mosaics.py -- DO NOT EDIT!
@@ -31,13 +36,13 @@ const NEMMosaicDefinition *NEM_MOSAIC_DEFINITION_XEM = NEM_MOSAIC_DEFINITIONS;
 """.lstrip()
 
 def format_primitive(value):
-    if type(value) is bool:
+    if isinstance(value, bool):
         return ("false", "true")[value]
-    elif type(value) in (int, float):
+    elif isinstance(value, numbers.Number):
         return str(value)
-    elif type(value) is str:
+    elif isinstance(value, basestring):
         return json.dumps(value)
-    elif type(value) is list:
+    elif isinstance(value, collections.Sequence):
         return "{ " + ", ".join(
             format_primitive(item) for item in value
         ) + " }"
@@ -61,14 +66,14 @@ def format_field(field, value):
         return format_primitive(value)
 
 def field_to_meta(field, value):
-    if hasattr(value, "_values"):
-        return ("{}_count".format(field.name), format_primitive(len(value._values)))
+    if field.label == field.LABEL_REPEATED:
+        return ("{}_count".format(field.name), format_primitive(len(value)))
     else:
         return ("has_{}".format(field.name), format_primitive(True))
 
 def message_to_struct(_message, proto):
     message = json_format.ParseDict(_message, proto())
-    return dict(chain.from_iterable(
+    return collections.OrderedDict(chain.from_iterable(
         (
             field_to_meta(field, value),
             (field.name, format_field(field, value)),