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authorEric <[email protected]>2013-05-09 17:04:18 -0700
committerEric <[email protected]>2013-05-09 17:04:18 -0700
commitefbdfbe117939cd50d0252a210b9b7634de42bb4 (patch)
tree74b0bad39d3a5b25bd4199728c16c0b1a4ade703 /src/rcl_prv_discover.erl
parent0d5a803a28010cc956948b614408b9d38997e9a1 (diff)
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Basic file rename from rcl to rlx
Diffstat (limited to 'src/rcl_prv_discover.erl')
-rw-r--r--src/rcl_prv_discover.erl133
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diff --git a/src/rcl_prv_discover.erl b/src/rcl_prv_discover.erl
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-%% -*- erlang-indent-level: 4; indent-tabs-mode: nil; fill-column: 80 -*-
-%%% 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 This provider uses the lib_dir setting of the state. It searches the
-%%% Lib Dirs looking for all OTP Applications that are available. When it finds
-%%% those OTP Applications it loads the information about them and adds them to
-%%% the state of available apps. This implements the rcl_provider behaviour.
--module(rcl_prv_discover).
--behaviour(rcl_provider).
-
--export([init/1,
- do/1,
- format_error/1]).
-
--include_lib("relcool/include/relcool.hrl").
-
-%%============================================================================
-%% API
-%%============================================================================
--spec init(rcl_state:t()) -> {ok, rcl_state:t()}.
-init(State) ->
- {ok, State}.
-
-%% @doc recursively dig down into the library directories specified in the state
-%% looking for OTP Applications
--spec do(rcl_state:t()) -> {ok, rcl_state:t()} | relcool:error().
-do(State0) ->
- LibDirs = get_lib_dirs(State0),
- case rcl_app_discovery:do(State0, LibDirs) of
- {ok, AppMeta} ->
- case rcl_rel_discovery:do(State0, LibDirs, AppMeta) of
- {ok, Releases} ->
- State1 = rcl_state:available_apps(State0, AppMeta),
- {ok, rcl_state:realized_releases(State1, lists:foldl(fun add/2,
- ec_dictionary:new(ec_dict),
- Releases))};
- Error ->
- Error
- end;
- Error ->
- Error
- end.
-
-%% @doc this is here to comply with the signature. However, we do not actually
-%% produce any errors and so simply return an empty string.
--spec format_error(any()) -> iolist().
-format_error(_) ->
- "".
-
-%%%===================================================================
-%%% Internal Functions
-%%%===================================================================
-%% @doc only add the release if its not documented in the system
-add(Rel, Dict) ->
- RelName = rcl_release:name(Rel),
- RelVsn = rcl_release:vsn(Rel),
- ec_dictionary:add({RelName, RelVsn}, Rel, Dict).
-
-get_lib_dirs(State) ->
- LibDirs0 = rcl_state:lib_dirs(State),
- case rcl_state:get(State, disable_default_libs, false) of
- true ->
- LibDirs0;
- false ->
- lists:flatten([LibDirs0,
- add_common_project_dirs(State),
- add_system_lib_dir(State),
- add_release_output_dir(State)])
- end.
-
--spec add_common_project_dirs(rcl_state:t()) -> [file:name()].
-add_common_project_dirs(State) ->
- %% Check to see if there is a rebar.config. If so then look for a deps
- %% dir. If both are there then we add that to the lib dirs.
- case rcl_state:get(State, disable_project_subdirs, false) of
- true ->
- [];
- false ->
- Root = rcl_state:root_dir(State),
- Apps = filename:join(Root, "apps"),
- Lib = filename:join(Root, "lib"),
- Deps = filename:join(Root, "deps"),
- Ebin = filename:join(Root, "ebin"),
- lists:foldl(fun(Dir, LibDirs) ->
- case ec_file:exists(Dir) of
- true ->
- [erlang:iolist_to_binary(Dir) | LibDirs];
- false ->
- LibDirs
- end
- end, [], [Deps, Lib, Apps, Ebin])
- end.
-
--spec add_system_lib_dir(rcl_state:t()) -> [file:name()].
-add_system_lib_dir(State) ->
- ExcludeSystem = rcl_state:get(State, discover_exclude_system, false),
- case ExcludeSystem of
- true ->
- [];
- false ->
- erlang:iolist_to_binary(code:lib_dir())
- end.
-
-add_release_output_dir(State) ->
- case rcl_state:get(State, disable_discover_release_output, false) of
- true ->
- [];
- false ->
- Output = erlang:iolist_to_binary(rcl_state:output_dir(State)),
- case ec_file:exists(erlang:binary_to_list(Output)) of
- true ->
- Output;
- false ->
- []
- end
- end.