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# This function is intended to be used as a validation command for individual option specifications
# given to the `argparse` command. It checks that the argument is a valid integer and optionally
# whether it is in a reasonable range.
function _validate_int --no-scope-shadowing
# Note that we can't use ourself to validate the arguments to the --min and --max flags this
# function recognizes.
set -l options 'm-min=' 'x-max='
argparse -n _argparse_validate_int $options -- $argv
or return
if not string match -qr '^-?\d+$' -- $_flag_value
set -l msg (_ "%s: Value '%s' for flag '%s' is not an integer\n")
printf $msg $_argparse_cmd $_flag_value $_flag_name
return 1
end
if set -q _flag_min
and test $_flag_value -lt $_flag_min
set -l msg (_ "%s: Value '%s' for flag '%s' less than min allowed of '%s'\n")
printf $msg $_argparse_cmd $_flag_value $_flag_name $_flag_min
return 1
end
if set -q _flag_max
and test $_flag_value -gt $_flag_max
set -l msg (_ "%s: Value '%s' for flag '%s' greater than max allowed of '%s'\n")
printf $msg $_argparse_cmd $_flag_value $_flag_name $_flag_max
return 1
end
return 0
end
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