flow.doc

Things to do depending on command line:

  No command line or /ASK /YES /NO /FORCE /VERBOSE /OLD alone
    Display "/? for help"
    print format

  /? /HELP
    Display help

  /DOSFORMAT
    Conjure other parameters
    Execute depending the other parameters

  /A /FATS /CLUSTER /D /DIRENTRIES /S /SECTORSIZE
    format_f shows if some of these changed
    init_drive()
    make_newf() checks if really changed for
    If different from the old
      make_new_format() counts the format
      disable_disk(), configure, resize or WriteNewFormat

  /ERASE /UNCONDITIONAL
    init_drive()
    make_newf() and make_new_format()
    Fresh format the disk

  /DEVICETYPE /HEADS /SIDES /SECTORS /SPT
    Reconfigure

  /ENVIRONMENT
    init_drive()
    Set the environment variables and report done so
    Do what other parameters might require

  /WRITEPROTECT
    Set the write protection flag

  /M /MAXSIZES
    If no size change, reallocate anyway



Function dependences and program structure by functions

main()
  parse_cmdline(argc, argv)
  init_drive()
  format_disk()
  set_env()
  set_write_protect()

init_drive()
  resolve_drive()
  Decide on drive
  Limit variables on operating system type
  retrieve_old_format()

retrieve_old_format()
  Scan the driver list and fill subconfs
  Fill the "f" variable

format()
  make_newf()
  Test for changes in format
  make_new_format()
  count_root()
  WriteNewFormat()
  Resize()

WriteNewFormat()
  DiskAllocate(0)
    fail -> see if old disk OK and if not make old kind of disk if possible
  configure_drive()
  Write the disk

Resize()
  FAT_open(&f) - fail -> abort
  FAT_stats() - fail -> abort
  packdata()
    fail -> try to finnish what we are in middle of and abort
  DiskAllocate(1)
    fail -> if old disk not OK, try WriteNewFormat for new and then old
  MoveSectors
    fail -> try to continue, WriteNewFormat for new and then old format
  FixFAT()
    fail -> try to continue, WriteNewFormat for new and then old format
  DiskAllocate(1)
    fail -> WriteNewFormat for new format
  FAT_close()
    fail -> try to continue, WriteNewFormat for new and then old format
  ClearSectors()
    fail -> try to continue, WriteNewFormat for new and then old format
  configure_drive()