--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/planemo/lib/python3.7/site-packages/rdflib/plugins/serializers/trig.py	Fri Jul 31 00:32:28 2020 -0400
@@ -0,0 +1,93 @@
+"""
+Trig RDF graph serializer for RDFLib.
+See <http://www.w3.org/TR/trig/> for syntax specification.
+"""
+
+from collections import defaultdict
+
+from rdflib.plugins.serializers.turtle import TurtleSerializer, _GEN_QNAME_FOR_DT, VERB
+
+from rdflib.term import BNode, Literal
+
+__all__ = ['TrigSerializer']
+
+
+class TrigSerializer(TurtleSerializer):
+
+    short_name = "trig"
+    indentString = 4 * ' '
+
+    def __init__(self, store):
+        if store.context_aware:
+            self.contexts = list(store.contexts())
+            self.default_context = store.default_context.identifier
+            if store.default_context:
+                self.contexts.append(store.default_context)
+        else:
+            self.contexts = [store]
+            self.default_context = None
+
+        super(TrigSerializer, self).__init__(store)
+
+    def preprocess(self):
+        for context in self.contexts:
+            self.store = context
+            self.getQName(context.identifier)
+            self._references = defaultdict(int)
+            self._subjects = {}
+
+            for triple in context:
+                self.preprocessTriple(triple)
+
+            self._contexts[context]=(self.orderSubjects(), self._subjects, self._references)
+
+    def reset(self):
+        super(TrigSerializer, self).reset()
+        self._contexts = {}
+
+    def serialize(self, stream, base=None, encoding=None,
+                  spacious=None, **args):
+        self.reset()
+        self.stream = stream
+        self.base = base
+
+        if spacious is not None:
+            self._spacious = spacious
+
+        self.preprocess()
+
+        self.startDocument()
+
+        firstTime = True
+        for store, (ordered_subjects, subjects, ref) in list(self._contexts.items()):
+            if not ordered_subjects: continue
+
+            self._references = ref
+            self._serialized = {}
+            self.store = store
+            self._subjects = subjects
+
+            if self.default_context and store.identifier==self.default_context:
+                self.write(self.indent() + '\n{')
+            else:
+                if isinstance(store.identifier, BNode):
+                    iri = store.identifier.n3()
+                else:
+                    iri = self.getQName(store.identifier)
+                    if iri is None:
+                        iri = store.identifier.n3()
+                self.write(self.indent() + '\n%s {' % iri)
+
+            self.depth += 1
+            for subject in ordered_subjects:
+                if self.isDone(subject):
+                    continue
+                if firstTime:
+                    firstTime = False
+                if self.statement(subject) and not firstTime:
+                    self.write('\n')
+            self.depth -= 1
+            self.write('}\n')
+
+        self.endDocument()
+        stream.write("\n".encode('ascii'))