Windows fixes (#185)

* utf-8 required to be explicitly set when importing on windows

* Updating version

exetera/_version.py

@@ -1,2 +1,2 @@
 
-__version__ = '0.5.2'
+__version__ = '0.5.3'

exetera/core/exporter.py

@@ -36,7 +36,7 @@ def export_to_csv(destination, datastore, fields):
     readers = [datastore.get_reader(f[1]) for f in fields]
     transforms = [transform_from_reader_type(r) for r in readers]
 
-    with open(destination, 'w') as d:
+    with open(destination, 'w', encoding='utf-8') as d:
         csvw = csv.writer(d)
         #header
         header = [None] * len(fields)

exetera/core/importer.py

@@ -30,7 +30,7 @@ def import_with_schema(timestamp, dest_file_name, schema_file, files, overwrite,
     print(schema_file)
     print(files)
 
-    with open(schema_file) as sf:
+    with open(schema_file, encoding='utf-8') as sf:
         schema = load_schema(sf)
 
     any_parts_present = False
@@ -73,7 +73,7 @@ def import_with_schema(timestamp, dest_file_name, schema_file, files, overwrite,
 
             fields = schema[sk].fields
 
-            with open(files[sk]) as f:
+            with open(files[sk], encoding='utf-8') as f:
                 ds = dataset.Dataset(f, stop_after=1)
             names = set([n.strip() for n in ds.names_])
             missing_names = names.difference(fields.keys())
@@ -137,7 +137,7 @@ def __init__(self, datastore, source, hf, space, schema, timestamp,
             hf.create_group(space)
         group = hf[space]
 
-        with open(source) as sf:
+        with open(source, encoding='utf-8') as sf:
             csvf = csv.DictReader(sf, delimiter=',', quotechar='"')
             # self.names_ = csvf.fieldnames
 

exetera/core/operations.py

@@ -10,7 +10,7 @@
 
 DEFAULT_CHUNKSIZE = 1 << 20
 INVALID_INDEX = 1 << 62
-MAX_DATETIME = datetime(year=9999, month=1, day=1) #.timestamp()
+MAX_DATETIME = datetime(year=3000, month=1, day=1) #.timestamp()
 
 
 def chunks(length, chunksize=1 << 20):