Files
docker-cli/components/engine/pkg/mflag
Dan Walsh bb1bfae794 Remove TestUsage, since Usage will no longer be shown on failure to parse
Docker-DCO-1.1-Signed-off-by: Dan Walsh <dwalsh@redhat.com> (github: rhatdan)
Upstream-commit: 4dc962d09a05b5422c692f4762a32c24cb506e6b
Component: engine
2015-01-06 13:40:14 +01:00
..
2014-01-17 17:33:15 -08:00
2014-06-16 22:20:07 +00:00
2014-01-17 17:33:15 -08:00

Package mflag (aka multiple-flag) implements command-line flag parsing.
It's an hacky fork of the official golang package

It adds:

  • both short and long flag version
    ./example -s red ./example --string blue

  • multiple names for the same option

$>./example -h
Usage of example:
  -s, --string="": a simple string

It is very flexible on purpose, so you can do things like:

$>./example -h
Usage of example:
  -s, -string, --string="": a simple string

Or:

$>./example -h
Usage of example:
  -oldflag, --newflag="": a simple string

You can also hide some flags from the usage, so if we want only --newflag:

$>./example -h
Usage of example:
  --newflag="": a simple string
$>./example -oldflag str
str

See example.go for more details.