update_eads.py

from lxml import etree
import os
from os.path import join

ead_dir = "path/to/eads"

unsplit_lines = []
for filename in os.listdir("reelmapfiles"):
  with open(join("reelmapfiles", filename), "r") as f:
    unsplit_lines.extend(f.readlines())
    
itemid_handle_map = {line.split(" ")[0].strip():line.split(" ")[1].strip() for line in unsplit_lines}
itemids_to_match = itemid_handle_map.keys()
    
for filename in os.listdir(ead_dir):
  tree = etree.parse(join(ead_dir, filename))
  unitids = tree.xpath("//unitid")
  for unitid in unitids:
    if "sr" in unitid.text.lower():
      identifier = unitid.text.strip("[] ")
      daolink = ""
      while not daolink and identifier:
        if identifier in itemids_to_match:
          daolink = itemid_handle_map[identifier]
          itemids_to_match.remove(identifier)
        else:
          identifier = "-".join(identifier.split("-")[0:-1])
        
      if daolink:
        parent_component = unitid.getparent().getparent().getparent()
        if not parent_component.xpath("./did/dao"):
          # make the dao
  
  # There are still unmatched identifiers that need to be investigated
if itemids_to_match:
  print "\n".join(itemids_to_match)