rebar3/src/rebar_env.erl

89 lines
3.9 KiB
Erlang

-module(rebar_env).
-export([create_env/1,
create_env/2]).
-include("rebar.hrl").
%% @doc The following environment variables are exported when running
%% a hook (absolute paths):
%%
%% REBAR_DEPS_DIR = rebar_dir:deps_dir/1
%% REBAR_BUILD_DIR = rebar_dir:base_dir/1
%% REBAR_ROOT_DIR = rebar_dir:root_dir/1
%% REBAR_CHECKOUTS_DIR = rebar_dir:checkouts_dir/1
%% REBAR_CHECKOUTS_OUT_DIR = rebar_dir:checkouts_out_dir/1
%% REBAR_PLUGINS_DIR = rebar_dir:plugins_dir/1
%% REBAR_GLOBAL_CONFIG_DIR = rebar_dir:global_config_dir/1
%% REBAR_GLOBAL_CACHE_DIR = rebar_dir:global_cache_dir/1
%% REBAR_TEMPLATE_DIR = rebar_dir:template_dir/1
%% REBAR_APP_DIRS = rebar_dir:lib_dirs/1
%% REBAR_SRC_DIRS = rebar_dir:src_dirs/1
%%
%% autoconf compatible variables
%% (see: http://www.gnu.org/software/autoconf/manual/autoconf.html#Erlang-Libraries):
%% ERLANG_ERTS_VER = erlang:system_info(version)
%% ERLANG_ROOT_DIR = code:root_dir/0
%% ERLANG_LIB_DIR_erl_interface = code:lib_dir(erl_interface)
%% ERLANG_LIB_VER_erl_interface = version part of path returned by code:lib_dir(erl_interface)
%% ERL = ERLANG_ROOT_DIR/bin/erl
%% ERLC = ERLANG_ROOT_DIR/bin/erl
%%
-spec create_env(rebar_state:t()) -> proplists:proplist().
create_env(State) ->
Opts = rebar_state:opts(State),
create_env(State, Opts).
-spec create_env(rebar_state:t(), rebar_dict()) -> proplists:proplist().
create_env(State, Opts) ->
BaseDir = rebar_dir:base_dir(State),
EnvVars = [
{"REBAR_DEPS_DIR", filename:absname(rebar_dir:deps_dir(State))},
{"REBAR_BUILD_DIR", filename:absname(rebar_dir:base_dir(State))},
{"REBAR_ROOT_DIR", filename:absname(rebar_dir:root_dir(State))},
{"REBAR_CHECKOUTS_DIR", filename:absname(rebar_dir:checkouts_dir(State))},
{"REBAR_CHECKOUTS_OUT_DIR", filename:absname(rebar_dir:checkouts_out_dir(State))},
{"REBAR_PLUGINS_DIR", filename:absname(rebar_dir:plugins_dir(State))},
{"REBAR_GLOBAL_CONFIG_DIR", filename:absname(rebar_dir:global_config_dir(State))},
{"REBAR_GLOBAL_CACHE_DIR", filename:absname(rebar_dir:global_cache_dir(Opts))},
{"REBAR_TEMPLATE_DIR", filename:absname(rebar_dir:template_dir(State))},
{"REBAR_APP_DIRS", join_dirs(BaseDir, rebar_dir:lib_dirs(State))},
{"REBAR_SRC_DIRS", join_dirs(BaseDir, rebar_dir:all_src_dirs(Opts))},
{"ERLANG_ERTS_VER", erlang:system_info(version)},
{"ERLANG_ROOT_DIR", code:root_dir()},
{"ERL", filename:join([code:root_dir(), "bin", "erl"])},
{"ERLC", filename:join([code:root_dir(), "bin", "erlc"])},
{"ERLANG_ARCH" , rebar_api:wordsize()},
{"ERLANG_TARGET", rebar_api:get_arch()}
],
EInterfaceVars = create_erl_interface_env(),
lists:append([EnvVars, EInterfaceVars]).
-spec create_erl_interface_env() -> list().
create_erl_interface_env() ->
case code:lib_dir(erl_interface) of
{error, bad_name} ->
?WARN("erl_interface is missing. ERLANG_LIB_DIR_erl_interface and "
"ERLANG_LIB_VER_erl_interface will not be added to the environment.", []),
[];
Dir ->
[
{"ERLANG_LIB_DIR_erl_interface", Dir},
{"ERLANG_LIB_VER_erl_interface", re_version(Dir)}
]
end.
%% ====================================================================
%% Internal functions
%% ====================================================================
join_dirs(BaseDir, Dirs) ->
rebar_string:join([filename:join(BaseDir, Dir) || Dir <- Dirs], ":").
re_version(Path) ->
case re:run(Path, "^.*-(?<VER>[^/-]*)$", [{capture,[1],list}, unicode]) of
nomatch -> "";
{match, [Ver]} -> Ver
end.