Test generating and querying Xapian indexes.

scripts/brain-query

@@ -0,0 +1,40 @@
+#!/usr/bin/env python3
+
+import xapian
+import sys
+import os
+import json
+
+def main(path, query):
+    db = xapian.Database(path, xapian.DB_OPEN)
+    docid_map_path = os.path.join(path, "docid_map.json")
+    with open(docid_map_path, 'rt') as f:
+        docid_to_node = json.load(f)
+
+    qp = xapian.QueryParser()
+    stemmer = xapian.Stem("english")
+    qp.set_stemmer(stemmer)
+    qp.set_database(db)
+    qp.set_stemming_strategy(xapian.QueryParser.STEM_SOME)
+    xap_query = qp.parse_query(query)
+    print("Parsed query is: {}".format(xap_query))
+
+    enquire = xapian.Enquire(db)
+    enquire.set_query(xap_query)
+    matches = enquire.get_mset(0, 10)
+    for match in matches:
+        print(
+            "ID {} {}% | DocId: {}".format(
+                match.rank + 1,
+                match.percent,
+                docid_to_node[str(match.document.get_docid())],
+            )
+        )
+
+
+if __name__ == '__main__':
+    if len(sys.argv) != 3:
+        print("Brain-Query")
+        print("Usage: {} <path> <query>".format(sys.argv[0]))
+        exit(0)
+    main(sys.argv[1], sys.argv[2])