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%% -*- erlang-indent-level: 4;indent-tabs-mode: nil -*-
%% ex: ts=4 sw=4 et
%% -------------------------------------------------------------------
%%
%% rebar: Erlang Build Tools
%%
%% Copyright (c) 2009 Dave Smith (dizzyd@dizzyd.com)
%%
%% Permission is hereby granted, free of charge, to any person obtaining a copy
%% of this software and associated documentation files (the "Software"), to deal
%% in the Software without restriction, including without limitation the rights
%% to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
%% copies of the Software, and to permit persons to whom the Software is
%% furnished to do so, subject to the following conditions:
%%
%% The above copyright notice and this permission notice shall be included in
%% all copies or substantial portions of the Software.
%%
%% THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
%% IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
%% FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
%% AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
%% LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
%% OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
%% THE SOFTWARE.
%% -------------------------------------------------------------------
-module(rebar_core).
-export([process_command/2]).
-include("rebar.hrl").
-spec process_command(rebar_state:t(), atom()) -> {ok, rebar_state:t()} | {error, string()}.
process_command(State, Command) ->
%% ? rebar_prv_install_deps:setup_env(State),
Providers = rebar_state:providers(State),
Namespace = rebar_state:namespace(State),
{TargetProviders, CommandProvider} =
case Namespace of
undefined ->
%% undefined namespace means 'default', but on the first run;
%% it is used as an implicit counter for the first vs. subsequent
%% runs.
{providers:get_target_providers(Command, Providers, default),
providers:get_provider(Command, Providers, default)};
_ ->
{providers:get_target_providers(Command, Providers, Namespace),
providers:get_provider(Command, Providers, Namespace)}
end,
case CommandProvider of
not_found ->
case Namespace of
undefined ->
%% On the first run (Namespace = undefined), we use the
%% unfound command name to be a namespace.
case providers:get_providers_by_namespace(Command, Providers) of
[] ->
{error, io_lib:format("Command ~p not found", [Command])};
_ ->
do([{default, do} | TargetProviders],
rebar_state:namespace(State, Command))
end;
default ->
{error, io_lib:format("Command ~p not found", [Command])};
_ ->
{error, io_lib:format("Command ~p not found in namespace ~p",
[Command, Namespace])}
end;
CommandProvider ->
case Command of
Command when Command =:= do, Namespace =:= undefined ->
%% We're definitely in the default namespace. 'do' doesn't
%% properly exist for non-default namespaces outside of
%% dynamic dispatch calls for namespaces.
do(TargetProviders, rebar_state:namespace(State, default));
Command when Command =:= as, Namespace =:= undefined ->
%% Because of the possible forms such as:
%% 'rebar3 as profile task`, `rebar3 as profile do task`
%% and `rebar3 as profile namespace task`, we can only know
%% whether we're in the first 'as' or a namespace 'as' by
%% looking at profiles (as makes them non-default).
%% The namespace 'as' is banned. It also makes it impossible
%% to have both $REBAR_PROFILE set and use 'as' in a command
case rebar_state:current_profiles(State) of
[default] ->
do(TargetProviders, State);
_ ->
{error, "Namespace 'as' is forbidden"}
end;
Command when Command =:= do ->
do(TargetProviders, State);
_ ->
Profiles = providers:profiles(CommandProvider),
State1 = rebar_state:apply_profiles(State, Profiles),
Opts = providers:opts(CommandProvider)++rebar3:global_option_spec_list(),
case getopt:parse(Opts, rebar_state:command_args(State1)) of
{ok, Args} ->
State2 = rebar_state:command_parsed_args(State1, Args),
case Namespace of
undefined -> % we're executing commands, set the default namespace
do(TargetProviders, rebar_state:namespace(State2, default));
_ ->
do(TargetProviders, State2)
end;
{error, {invalid_option, Option}} ->
{error, io_lib:format("Invalid option ~s on task ~p", [Option, Command])}
end
end
end.
-spec do([{atom(), atom()}], rebar_state:t()) -> {ok, rebar_state:t()} | {error, string()}.
do([], State) ->
{ok, State};
do([ProviderName | Rest], State) ->
%% Special providers like 'as', 'do' or some hooks may be passed
%% as a tuple {Namespace, Name}, otherwise not. Handle them
%% on a per-need basis.
Provider = case ProviderName of
{Namespace, Name} ->
providers:get_provider(Name
,rebar_state:providers(State)
,Namespace);
_ ->
providers:get_provider(ProviderName
,rebar_state:providers(State)
,rebar_state:namespace(State))
end,
case providers:do(Provider, State) of
{ok, State1} ->
do(Rest, State1);
{error, Error} ->
{error, Error}
end.
|
