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| author | Tristan Sloughter <t@crashfast.com> | 2014-10-10 18:25:15 -0500 |
|---|---|---|
| committer | Tristan Sloughter <t@crashfast.com> | 2014-10-10 18:25:15 -0500 |
| commit | 26a53f323b2238f5d0b4988db6bae5c5ba384eab (patch) | |
| tree | 54eebf91f87e3155e54dd66459cf16fca70135e6 | |
| parent | 90cfb2a794e16dbf583a3591f448ced4a32f579f (diff) | |
print usage and desc of task for 'help task'
| -rw-r--r-- | src/rebar_prv_help.erl | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/src/rebar_prv_help.erl b/src/rebar_prv_help.erl index 4b843ca..5b9b8ca 100644 --- a/src/rebar_prv_help.erl +++ b/src/rebar_prv_help.erl @@ -25,13 +25,30 @@ init(State) -> {deps, ?DEPS}, {example, "rebar help <task>"}, {short_desc, "Display a list of tasks or help for a given task or subtask."}, - {desc, ""}, - {opts, []}])), + {desc, "Display a list of tasks or help for a given task or subtask."}, + {opts, [ + {help_task, undefined, undefined, string, "Task to print help for."} + ]}])), {ok, State1}. -spec do(rebar_state:t()) -> {ok, rebar_state:t()} | {error, string()}. do(State) -> - help(State), + {Args, _} = rebar_state:command_parsed_args(State), + case proplists:get_value(help_task, Args, undefined) of + undefined -> + help(State); + Name -> + Providers = rebar_state:providers(State), + Provider = providers:get_provider(list_to_atom(Name), Providers), + Opts = providers:opts(Provider), + case providers:desc(Provider) of + Desc when length(Desc) > 0 -> + io:format(Desc++"~n~n"); + _ -> + ok + end, + getopt:usage(Opts, "rebar "++Name, "", []) + end, {ok, State}. %% |