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Some commands can get very unweildy if they have too many positional
arguments. Adding options makes them easier to read, remember, and
understand.
This implementation of getopt has been taken from barebox, which has had
option support for quite a while. I have made a few modifications to their
version, such as the removal of opterr in favor of a separate getopt_silent
function. In addition, I have moved all global variables into struct
getopt_context.
The getopt from barebox also re-orders the arguments passed to it so that
non-options are placed last. This allows users to specify options anywhere.
For example, `ls -l foo/ -R` would be re-ordered to `ls -l -R foo/` as
getopt parsed the options. However, this feature conflicts with the const
argv in cmd_tbl->cmd. This was originally added in
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| .. | ||
| dfu.rst | ||
| efi.rst | ||
| getopt.rst | ||
| index.rst | ||
| linker_lists.rst | ||
| pinctrl.rst | ||
| rng.rst | ||
| serial.rst | ||
| timer.rst | ||
| unicode.rst | ||