content-type kwarg for all sparql result parsers

Author: gromgull

rdflib/plugins/sparql/results/csvresults.py

@@ -21,7 +21,7 @@ class CSVResultParser(ResultParser):
     def __init__(self):
         self.delim = ","
 
-    def parse(self, source):
+    def parse(self, source, content_type=None):
 
         r = Result('SELECT')
 

rdflib/plugins/sparql/results/jsonresults.py

@@ -21,7 +21,7 @@
 
 class JSONResultParser(ResultParser):
 
-    def parse(self, source):
+    def parse(self, source, content_type=None):
         inp = source.read()
         if isinstance(inp, binary_type):
             inp = inp.decode('utf-8')

rdflib/plugins/sparql/results/tsvresults.py

@@ -47,7 +47,7 @@
 
 
 class TSVResultParser(ResultParser):
-    def parse(self, source):
+    def parse(self, source, content_type=None):
 
         if isinstance(source.read(0), binary_type):
             # if reading from source returns bytes do utf-8 decoding