1  import logging
       2  
       3  
       4  logger = logging.getLogger(__name__)
       5  
       6  
       7  def unrepr(value):
       8      raise NotImplementedError
       9  
      10  
      11  def parse_entries(entries, *, ignoresep=None):
      12      for entry in entries:
      13          if ignoresep and ignoresep in entry:
      14              subentries = [entry]
      15          else:
      16              subentries = entry.strip().replace(',', ' ').split()
      17          for item in subentries:
      18              if item.startswith('+'):
      19                  filename = item[1:]
      20                  try:
      21                      infile = open(filename)
      22                  except FileNotFoundError:
      23                      logger.debug(f'ignored in parse_entries(): +{filename}')
      24                      return
      25                  with infile:
      26                      # We read the entire file here to ensure the file
      27                      # gets closed sooner rather than later.  Note that
      28                      # the file would stay open if this iterator is never
      29                      # exhausted.
      30                      lines = infile.read().splitlines()
      31                  for line in _iter_significant_lines(lines):
      32                      yield line, filename
      33              else:
      34                  yield item, None
      35  
      36  
      37  def _iter_significant_lines(lines):
      38      for line in lines:
      39          line = line.partition('#')[0]
      40          if not line.strip():
      41              continue
      42          yield line