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%% -*- erlang-indent-level: 4;indent-tabs-mode: nil -*-
%% ex: ts=4 sw=4 et
-module(rebar_relx).
-export([do/4,
format_error/1]).
-include("rebar.hrl").
%% ===================================================================
%% Public API
%% ===================================================================
-spec do(atom(), string(), atom(), rebar_state:t()) -> {ok, rebar_state:t()} | {error, string()}.
do(Module, Command, Provider, State) ->
Options = rebar_state:command_args(State),
DepsDir = rebar_dir:deps_dir(State),
ProjectAppDirs = lists:delete(".", ?DEFAULT_PROJECT_APP_DIRS),
LibDirs = rebar_utils:filtermap(fun ec_file:exists/1,
[?DEFAULT_CHECKOUTS_DIR, DepsDir | ProjectAppDirs]),
OutputDir = filename:join(rebar_dir:base_dir(State), ?DEFAULT_RELEASE_DIR),
AllOptions = string:join([Command | Options], " "),
Cwd = rebar_state:dir(State),
Providers = rebar_state:providers(State),
rebar_hooks:run_all_hooks(Cwd, pre, Provider, Providers, State),
try
case rebar_state:get(State, relx, []) of
[] ->
relx:main([{lib_dirs, LibDirs}
,{caller, api} | output_dir(OutputDir, Options)], AllOptions);
Config ->
Config1 = update_config(Config),
relx:main([{lib_dirs, LibDirs}
,{config, Config1}
,{caller, api} | output_dir(OutputDir, Options)], AllOptions)
end,
rebar_hooks:run_all_hooks(Cwd, post, Provider, Providers, State),
{ok, State}
catch
throw:T ->
{error, {Module, T}}
end.
-spec format_error(any()) -> iolist().
format_error(Reason) ->
io_lib:format("~p", [Reason]).
%% To handle profiles rebar3 expects the provider to use the first entry
%% in a configuration key-value list as the value of a key if dups exist.
%% This does not work with relx. Some config options must not lose their
%% order (release which has an extends option is one). So here we pull out
%% options that are special so we can reverse the rest so what we expect
%% from a rebar3 profile is what we get on the relx side.
-define(SPECIAL_KEYS, [release, vm_args, sys_config, overlay_vars, lib_dirs]).
update_config(Config) ->
{Special, Other} =
lists:foldl(fun(Tuple, {SpecialAcc, OtherAcc}) when is_tuple(Tuple) ->
case lists:member(element(1, Tuple), ?SPECIAL_KEYS) of
true ->
{[Tuple | SpecialAcc], OtherAcc};
false ->
{SpecialAcc, [Tuple | OtherAcc]}
end
end, {[], []}, Config),
lists:reverse(Special) ++ Other.
%% Don't override output_dir if the user passed one on the command line
output_dir(OutputDir, Options) ->
[{output_dir, OutputDir} || not(lists:member("-o", Options))
andalso not(lists:member("--output-dir", Options))].
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