[tools/xmlparser] Strip ws and quotes on to_csv

When writing multiple values to csv make sure
that whitespaces and carriage return linefeeds
as well as quotation marks that have been
added by the csv writer are removed before
returning the csv string.

Author: mpsonntag

odml/tools/xmlparser.py

@@ -27,11 +27,15 @@
 
 
 def to_csv(val):
-    unicode_values = list(map(unicode, val))
+    # Make sure all individual values do not contain
+    # leading or trailing whitespaces.
+    unicode_values = list(map(unicode.strip, map(unicode, val)))
     stream = StringIO()
     writer = csv.writer(stream, dialect="excel")
     writer.writerow(unicode_values)
-    csv_string = stream.getvalue().strip()
+    # Strip any csv.writer added carriage return line feeds
+    # and double quotes before saving.
+    csv_string = stream.getvalue().strip().strip('"')
     if len(unicode_values) > 1:
         csv_string = "[" + csv_string + "]"
     return csv_string