add fix-rdf-file.py

passed an rdf file w/ bad iris on stdin, it returns
a fixed version

ulo/fix-rdf-file.py

+#! /usr/bin/env python3
+
+
+from urllib import parse
+import re
+import sys
+
+
+def fix_quoted(s: str) -> str:
+    payload = s.strip('"')
+    fixed = parse.quote(payload)
+    return '"%s"' % fixed
+
+
+def print_fixed_line(line: str):
+    # https://stackoverflow.com/questions/249791
+    regex = r"(\"(?:[^\"]|\\.)*\")"
+    matches = re.findall(regex, line)
+
+    for match in matches:
+        fixed = fix_quoted(match)
+        line = line.replace(match, fixed)
+
+    print(line, end='')
+
+
+def main():
+    for line in sys.stdin:
+        print_fixed_line(line)
+
+
+if __name__ == '__main__':
+    try:
+        main()
+    except (KeyboardInterrupt, SystemExit, BrokenPipeError):
+        pass