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%% -*- erlang-indent-level: 4;indent-tabs-mode: nil -*-
%% ex: ts=4 sw=4 et
-module(rebar_plugins).
-export([install/1, handle_plugins/2]).
-include("rebar.hrl").
%% ===================================================================
%% Public API
%% ===================================================================
-spec install(rebar_state:t()) -> rebar_state:t().
install(State) ->
Plugins = rebar_state:get(State, plugins, []),
ProjectApps = rebar_state:project_apps(State),
OtherPlugins = lists:flatmap(fun(App) ->
AppDir = rebar_app_info:dir(App),
C = rebar_config:consult(AppDir),
S = rebar_state:new(rebar_state:new(), C, AppDir),
rebar_state:get(S, plugins, [])
end, ProjectApps),
handle_plugins(Plugins++OtherPlugins, State).
-spec handle_plugins([rebar_prv_install_deps:dep()], rebar_state:t()) -> rebar_state:t().
handle_plugins(Plugins, State) ->
PluginProviders = lists:flatmap(fun(Plugin) ->
handle_plugin(Plugin, State)
end, Plugins),
rebar_state:create_logic_providers(PluginProviders, State).
handle_plugin(Plugin, State) ->
try
%% Set deps dir to plugins dir so apps are installed there
State1 = rebar_state:set(State, deps_dir, ?DEFAULT_PLUGINS_DIR),
{ok, _, State2} = rebar_prv_install_deps:handle_deps(default, State1, [Plugin]),
Apps = rebar_state:all_deps(State2),
ToBuild = lists:dropwhile(fun rebar_app_info:valid/1, Apps),
[build_plugin(AppInfo) || AppInfo <- ToBuild],
[true = code:add_patha(filename:join(rebar_app_info:dir(AppInfo), "ebin")) || AppInfo <- Apps],
plugin_providers(Plugin)
catch
C:T ->
?DEBUG("~p ~p", [C, T]),
?WARN("Plugin ~p not available. It will not be used.", [Plugin]),
[]
end.
build_plugin(AppInfo) ->
AppDir = rebar_app_info:dir(AppInfo),
C = rebar_config:consult(AppDir),
S = rebar_state:new(rebar_state:new(), C, AppDir),
rebar_prv_compile:compile(S, AppInfo).
plugin_providers({Plugin, _, _}) when is_atom(Plugin) ->
validate_plugin(Plugin);
plugin_providers({Plugin, _}) when is_atom(Plugin) ->
validate_plugin(Plugin);
plugin_providers(Plugin) when is_atom(Plugin) ->
validate_plugin(Plugin).
validate_plugin(Plugin) ->
_ = application:load(Plugin),
case application:get_env(Plugin, providers) of
{ok, Providers} ->
Providers;
undefined ->
Exports = Plugin:module_info(exports),
case lists:member({init,1}, Exports) of
false ->
?WARN("Plugin ~p does not export init/1. It will not be used.", [Plugin]),
[];
true ->
[Plugin]
end
end.
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