code: def get_archive_name(self):
          
          name = self.get_local_name().split('.')[0]
          case = self.case_id
          label = self.commons['cmdlineopts'].label
          date = ''
          rand = ''.join(random.choice(string.ascii_lowercase) for x in range(7))
  
          if self.name_pattern == 'legacy':
              nstr = "sosreport-{name}{case}{date}"
              case = '.' + case if case else ''
              date = '-%Y%m%d%H%M%S'
          elif self.name_pattern == 'friendly':
              nstr = "sosreport-{name}{label}{case}{date}-{rand}"
              case = '-' + case if case else ''
              label = '-' + label if label else ''
              date = '-%Y-%m-%d'
          else:
              nstr = self.name_pattern
  
          nstr = nstr.format(
              name=name,
              label=label,
              case=case,
              date=date,
              rand=rand
          )
          return self.sanitize_filename(time.strftime(nstr))
docs: This function should return the filename of the archive without the
          extension.
  
          This uses the policy's name_pattern attribute to determine the name.
          There are two pre-defined naming patterns - 'legacy' and 'friendly'
          that give names like the following:
  
          legacy - 'sosreport-tux.123456-20171224185433'
          friendly - 'sosreport-tux-mylabel-123456-2017-12-24-ezcfcop.tar.xz'
  
          A custom name_pattern can be used by a policy provided that it
          defines name_pattern using a format() style string substitution.
  
          Usable substitutions are:
  
              name  - the short hostname of the system
              label - the label given by --label
              case  - the case id given by --case-id or --ticker-number
              rand  - a random string of 7 alpha characters
  
          Note that if a datestamp is needed, the substring should be set
          in the name_pattern in the format accepted by strftime().