Add to_csv.py tool

tools/to_csv.py

+#!/usr/bin/env python3
+
+import argparse
+import csv
+import sys
+import xml.etree.ElementTree as et
+
+nsmap = {
+    'dc': '{http://purl.org/dc/elements/1.1/}'
+}
+
+parser = argparse.ArgumentParser()
+parser.add_argument('file')
+args = parser.parse_args()
+
+writer = csv.writer(sys.stdout, delimiter=',', quotechar='"', quoting=csv.QUOTE_MINIMAL)
+
+tree = et.parse(args.file)
+root = tree.getroot()
+
+for child in root:
+    uri = child.attrib['{dc}uri'.format(**nsmap)]
+    row = [uri] + [node.text or '' for node in child]
+    writer.writerow(row)