code: def _loadTwoPartSource(self, sourceFName, sourceLines):
          
          lineno = 1
          enterInConfstems = 0
          if sourceFName.find("conferences")!=-1:
              enterInConfstems = 1
          for ln in sourceLines:
              lineno += 1
              try:
                  stem, source = ln.split("\t", 1)
                  stem = stem.strip()[-9:]
                  if not source.strip():
                      sys.stderr.write("sourcematchers.py: warning: skipping entry %s in file %s\n"%(ln.strip(),sourceFName))
                      continue
                  self._addPub(stem, source)
                  if enterInConfstems:
                      self.confstems[stem] = 1
              except ValueError:
                  sys.stderr.write("sourcematchers.py: %s (%d): skipping source line: %s"%(sourceFName,lineno,ln))
docs: is a helper for _loadOneSource.