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%% -*- erlang-indent-level: 4;indent-tabs-mode: nil -*-
%% ex: ts=4 sw=4 et
-module(rebar_prv_path).
-behaviour(provider).
-export([init/1,
do/1,
format_error/1]).
-include("rebar.hrl").
-define(PROVIDER, path).
-define(DEPS, [app_discovery]).
%% ===================================================================
%% Public API
%% ===================================================================
-spec init(rebar_state:t()) -> {ok, rebar_state:t()}.
init(State) ->
State1 = rebar_state:add_provider(State, providers:create([{name, ?PROVIDER},
{module, ?MODULE},
{bare, true},
{deps, ?DEPS},
{example, "rebar3 path"},
{short_desc, "Print paths to build dirs in current profile."},
{desc, "Print paths to build dirs in current profile."},
{opts, eunit_opts(State)}])),
{ok, State1}.
-spec do(rebar_state:t()) -> {ok, rebar_state:t()} | {error, string()}.
do(State) ->
{RawOpts, _} = rebar_state:command_parsed_args(State),
%% retrieve apps to filter by for other args
Apps = filter_apps(RawOpts, State),
%% remove apps and separator opts from options
Paths = lists:filter(fun({app, _}) -> false; ({separator, _}) -> false; (_) -> true end, RawOpts),
%% if no paths requested in opts print the base_dir instead
P = case Paths of [] -> [{ebin, true}]; _ -> Paths end,
paths(P, Apps, State, []),
{ok, State}.
-spec format_error(any()) -> iolist().
format_error(Reason) ->
io_lib:format("~p", [Reason]).
filter_apps(RawOpts, State) ->
RawApps = proplists:get_all_values(app, RawOpts),
Apps = lists:foldl(fun(String, Acc) -> string:tokens(String, ",") ++ Acc end, [], RawApps),
case Apps of
[] ->
ProjectDeps = project_deps(State),
ProjectApps = rebar_state:project_apps(State),
lists:map(fun(A) -> binary_to_list(rebar_app_info:name(A)) end, ProjectApps) ++ ProjectDeps;
_ -> Apps
end.
paths([], _, State, Acc) -> print_paths_if_exist(lists:reverse(Acc), State);
paths([{base, true}|Rest], Apps, State, Acc) ->
paths(Rest, Apps, State, [base_dir(State)|Acc]);
paths([{bin, true}|Rest], Apps, State, Acc) ->
paths(Rest, Apps, State, [bin_dir(State)|Acc]);
paths([{ebin, true}|Rest], Apps, State, Acc) ->
paths(Rest, Apps, State, ebin_dirs(Apps, State) ++ Acc);
paths([{lib, true}|Rest], Apps, State, Acc) ->
paths(Rest, Apps, State, [lib_dir(State)|Acc]);
paths([{priv, true}|Rest], Apps, State, Acc) ->
paths(Rest, Apps, State, priv_dirs(Apps, State) ++ Acc);
paths([{src, true}|Rest], Apps, State, Acc) ->
paths(Rest, Apps, State, src_dirs(Apps, State) ++ Acc);
paths([{rel, true}|Rest], Apps, State, Acc) ->
paths(Rest, Apps, State, [rel_dir(State)|Acc]).
base_dir(State) -> io_lib:format("~s", [rebar_dir:base_dir(State)]).
bin_dir(State) -> io_lib:format("~s/bin", [rebar_dir:base_dir(State)]).
lib_dir(State) -> io_lib:format("~s/lib", [rebar_dir:base_dir(State)]).
rel_dir(State) -> io_lib:format("~s/rel", [rebar_dir:base_dir(State)]).
ebin_dirs(Apps, State) ->
lists:map(fun(App) -> io_lib:format("~s/lib/~s/ebin", [rebar_dir:base_dir(State), App]) end, Apps).
priv_dirs(Apps, State) ->
lists:map(fun(App) -> io_lib:format("~s/lib/~s/priv", [rebar_dir:base_dir(State), App]) end, Apps).
src_dirs(Apps, State) ->
lists:map(fun(App) -> io_lib:format("~s/lib/~s/src", [rebar_dir:base_dir(State), App]) end, Apps).
print_paths_if_exist(Paths, State) ->
{RawOpts, _} = rebar_state:command_parsed_args(State),
Sep = proplists:get_value(separator, RawOpts, " "),
RealPaths = lists:filter(fun(P) -> ec_file:is_dir(P) end, Paths),
io:format("~s", [string:join(RealPaths, Sep)]).
project_deps(State) ->
Profiles = rebar_state:current_profiles(State),
List = lists:foldl(fun(Profile, Acc) -> rebar_state:get(State, {deps, Profile}, []) ++ Acc end, [], Profiles),
Deps = [normalize(Name) || {Name, _} <- List],
lists:usort(Deps).
normalize(AppName) when is_list(AppName) -> AppName;
normalize(AppName) when is_atom(AppName) -> atom_to_list(AppName);
normalize(AppName) when is_binary(AppName) -> binary_to_list(AppName).
eunit_opts(_State) ->
[{app, undefined, "app", string, help(app)},
{base, undefined, "base", boolean, help(base)},
{bin, undefined, "bin", boolean, help(bin)},
{ebin, undefined, "ebin", boolean, help(ebin)},
{lib, undefined, "lib", boolean, help(lib)},
{priv, undefined, "priv", boolean, help(priv)},
{separator, $s, "separator", string, help(separator)},
{src, undefined, "src", boolean, help(src)},
{rel, undefined, "rel", boolean, help(rel)}].
help(app) -> "Comma seperated list of applications to return paths for.";
help(base) -> "Return the `base' path of the current profile.";
help(bin) -> "Return the `bin' path of the current profile.";
help(ebin) -> "Return all `ebin' paths of the current profile's applications.";
help(lib) -> "Return the `lib' path of the current profile.";
help(priv) -> "Return the `priv' path of the current profile's applications.";
help(separator) -> "In case of multiple return paths, the separator character to use to join them.";
help(src) -> "Return the `src' path of the current profile's applications.";
help(rel) -> "Return the `rel' path of the current profile.".
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