Importing a properties file into a dictionary

import-export-dictionaries.cli

#   THIS CODE AND INFORMATION ARE PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESSED OR
#   IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS
#   FOR A PARTICULAR PURPOSE. THIS CODE AND INFORMATION ARE NOT SUPPORTED BY XEBIALABS.

from java.util import HashSet
from java.util import Properties
from java.io import FileReader
from java.io import FileWriter

def loadProps(propertiesFile):
  props = Properties()
  reader = FileReader(propertiesFile)
  try:
    props.load(reader)
  except:
    print 'ERROR: Unable to load properties from', propertiesFile
  finally:
    reader.close()
  return props

def saveProps(props, targetFile, comment=""):
  writer = FileWriter(targetFile)
  try:
    props.store(writer, comment)
  except IOError, Arg:
    print Arg.getMessage()
    print 'ERROR: Unable to save properties to', targetFile
  finally:
    writer.close()
  return
  
def importIntoDict(propertiesFile, dictName, overwriteExisting=False):
  try:
    dict = repository.read('Environments/' + dictName)
  except:
    print "ERROR: Unknown Dictionary '%s'. Please verify that an item with ID 'Environments/%s' exists in the repository" % (dictName, dictName)
    return
  props = loadProps(propertiesFile)
  if not props:
    print "ERROR: No properties loaded"
    return
  # copy, no live view
  existingKeys = HashSet(dict.entries.keySet())
  for prop in props.entrySet():
    key = prop.key
    if key in existingKeys:
      if overwriteExisting:
        print "Overwriting existing value for key '%s'." % (key)
        dict.entries[key] = prop.value
      else:
        print "Dictionary already contains key '%s'. Skipping." % (key)
    else:
      dict.entries[key] = prop.value
  print "Saving updated dictionary", dictName
  repository.update(dict)
  return dict

def exportFromDict(dictName, targetFile):
  try:
    dict = repository.read('Environments/' + dictName)
  except:
    print "ERROR: Unknown Dictionary '%s'. Please verify that an item with ID 'Environments/%s' exists in the repository" % (dictName, dictName)
    return
  props = Properties()
  for entry in dict.entries.entrySet():
    props.put(entry.key, entry.value)
  saveProps(props, targetFile, "Export of " + dictName)
  return