def find_newest_matching_prefix()

in scripts/xcresult_logs.py [0:0]

• 14 lines of code
• 5 McCabe index (conditional complexity)

def find_newest_matching_prefix(path, prefix):
  """Lists the given directory and returns the newest entry matching prefix.

  Args:
    path: A directory to list
    prefix: A regular expression that matches the filenames to consider

  Returns:
    The path to the newest entry in the directory whose basename starts with
    the prefix.
  """
  entries = os.listdir(path)
  result = None
  for entry in entries:
    if prefix.match(entry):
      fq_entry = os.path.join(path, entry)
      if result is None:
        result = fq_entry
      else:
        result_mtime = os.path.getmtime(result)
        entry_mtime = os.path.getmtime(fq_entry)
        if entry_mtime > result_mtime:
          result = fq_entry

  return result