docs: def get_lecture_filename(combined_section_lectures_nums,
                           section_dir,
                           secnum,
                           lecnum,
                           lecname,
                           title,
                           fmt):
      """
      Prepare a destination lecture filename.
  
      @param combined_section_lectures_nums: Flag that indicates whether
          section lectures should have combined numbering.
      @type combined_section_lectures_nums: bool
  
      @param section_dir: Path to current section directory.
      @type section_dir: str
  
      @param secnum: Section number.
      @type secnum: int
  
      @param lecnum: Lecture number.
      @type lecnum: int
  
      @param lecname: Lecture name.
      @type lecname: str
  
      @param title: Resource title.
      @type title: str
  
      @param fmt: Format of the resource (pdf, csv, etc)
      @type fmt: str
  
      @return: Lecture file name.
      @rtype: str
      """
      # FIXME: this is a quick and dirty solution to Filename too long
      # problem. We need to think of a more general way to solve this
      # issue.
      fmt = fmt[:FORMAT_MAX_LENGTH]
      title = title[:TITLE_MAX_LENGTH]
  
      # Format lecture file name
      if combined_section_lectures_nums:
          lecture_filename = os.path.join(
              section_dir,
              format_combine_number_resource(
                  secnum + 1, lecnum + 1, lecname, title, fmt))
      else:
          lecture_filename = os.path.join(
              section_dir, format_resource(lecnum + 1, lecname, title, fmt))
  
      return lecture_filename