%% -*- mode: Erlang; fill-column: 80; comment-column: 75; -*-
%%% Copyright 2012 Erlware, LLC. All Rights Reserved.
%%%
%%% This file is provided to you under the Apache License,
%%% Version 2.0 (the "License"); you may not use this file
%%% except in compliance with the License. You may obtain
%%% a copy of the License at
%%%
%%% http://www.apache.org/licenses/LICENSE-2.0
%%%
%%% Unless required by applicable law or agreed to in writing,
%%% software distributed under the License is distributed on an
%%% "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
%%% KIND, either express or implied. See the License for the
%%% specific language governing permissions and limitations
%%% under the License.
%%%---------------------------------------------------------------------------
%%% @author Eric Merritt <[email protected]>
%%% @copyright (C) 2012 Erlware, LLC.
%%%
%%% @doc Trivial utility file to help handle common tasks
-module(rcl_cmd_args).
-export([args2state/1]).
%%============================================================================
%% types
%%============================================================================
%%============================================================================
%% API
%%============================================================================
-spec args2state({error, Reason::term()} | {[getopt:option()], [string()]}) ->
{error, Reason::term()} |
{ok, {rcl_state:t(), [string()]}}.
args2state(Error={error, _}) ->
Error;
args2state({ok, {Opts, Targets}}) ->
RelName = proplists:get_value(relname, Opts, undefined),
RelVsn = proplists:get_value(relvsn, Opts, undefined),
case create_log(Opts,
[{relname, RelName},
{relvsn, RelVsn}]) of
Error = {error, _} ->
Error;
{ok, CommandLineConfig} ->
case validate_configs(Targets) of
Error = {error, _} ->
Error;
{ok, Configs} ->
{ok, {rcl_state:new(CommandLineConfig, Configs), Configs}}
end
end.
%%%===================================================================
%%% Internal Functions
%%%===================================================================
-spec validate_configs([file:filename()]) ->
{ok, [file:filename()]} | {error, Reason::term()}.
validate_configs(Configs) ->
Result =
lists:foldl(fun(_Config, Err = {error, _}) ->
Err;
(Config, Acc) ->
case filelib:is_regular(Config) of
true ->
[filename:absname(Config) | Acc];
false ->
{error, {invalid_config_file, Config}}
end
end, [], Configs),
case Result of
{error, _} ->
Result;
_ ->
%% Order may be important so lets make sure they remain in the same
%% order they came in as
{ok, lists:reverse(Result)}
end.
-spec create_log([getopt:option()], rcl_state:cmd_args()) ->
{ok, rcl_state:cmd_args()} | {error, Reason::term()}.
create_log(Opts, Acc) ->
LogLevel = proplists:get_value(log_level, Opts, 0),
if
LogLevel >= 0, LogLevel =< 2 ->
create_goals(Opts, [{log, rcl_log:new(LogLevel)} | Acc]);
true ->
{error, {invalid_log_level, LogLevel}}
end.
-spec create_goals([getopt:option()], rcl_state:cmd_args()) ->
{ok, rcl_state:cmd_args()} | {error, Reason::term()}.
create_goals(Opts, Acc) ->
case convert_goals(proplists:get_all_values(goals, Opts), []) of
Error={error, {failed_to_parse, _Spec}} ->
Error;
{ok, Specs} ->
create_output_dir(Opts, [{goals, Specs} | Acc])
end.
-spec convert_goals([string()], [depsolver:constraint()]) ->
{error,{failed_to_parse, string()}} |
{ok,[depsolver:constraint()]}.
convert_goals([], Specs) ->
%% Reverse the specs because order matters to depsolver
{ok, lists:reverse(Specs)};
convert_goals([RawSpec | Rest], Acc) ->
case rcl_goal:parse(RawSpec) of
{ok, Spec} ->
convert_goals(Rest, [Spec | Acc]);
{fail, _} ->
{error, {failed_to_parse, RawSpec}}
end.
-spec create_output_dir([getopt:option()], rcl_state:cmd_args()) ->
{ok, rcl_state:cmd_args()} | {error, Reason::term()}.
create_output_dir(Opts, Acc) ->
OutputDir = proplists:get_value(output_dir, Opts, "./relcool_output"),
case filelib:is_dir(OutputDir) of
false ->
case rcl_util:mkdir_p(OutputDir) of
ok ->
create_lib_dirs(Opts, [{output_dir, OutputDir} | Acc]);
{error, _} ->
{error, {unable_to_create_output_dir, OutputDir}}
end;
true ->
create_lib_dirs(Opts, [{output_dir, OutputDir} | Acc])
end.
-spec create_lib_dirs([getopt:option()], rcl_state:cmd_args()) ->
{ok, rcl_state:cmd_args()} | {error, Reason::term()}.
create_lib_dirs(Opts, Acc) ->
Dirs = proplists:get_all_values(lib_dir, Opts),
case check_lib_dirs(Dirs) of
Error = {error, _} ->
Error;
ok ->
{ok, [{lib_dirs, [filename:absname(Dir) || Dir <- Dirs]} | Acc]}
end.
-spec check_lib_dirs([string()]) -> ok | {error, {Reason::atom(), Dir::string()}}.
check_lib_dirs([]) ->
ok;
check_lib_dirs([Dir | Rest]) ->
case filelib:is_dir(Dir) of
false ->
{error, {not_directory, Dir}};
true ->
check_lib_dirs(Rest)
end.
