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07070100000000000081A4000003E800000064000000015CF28C3D00002C5E000000000000000000000000000000000000001800000000providers-1.8.1/LICENSE
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07070100000001000081A4000003E800000064000000015CF28C3D00000050000000000000000000000000000000000000001A00000000providers-1.8.1/README.mdproviders
=====

An Erlang providers library.

Build
-----

$ rebar compile
07070100000002000041ED000003E800000064000000025CF28C3D00000000000000000000000000000000000000000000001800000000providers-1.8.1/include07070100000003000081A4000003E800000064000000015CF28C3D00000154000000000000000000000000000000000000002600000000providers-1.8.1/include/providers.hrl%% This is the default form of error messages for the systems using
%% providers. It is expected that everything that returns an error use
%% this and that they all expose a format_error/2 message that returns
%% an iolist and any changes to state it needs to make on error.

-define(PRV_ERROR(Reason),
        {error, {?MODULE, Reason}}).
07070100000004000081A4000003E800000064000000015CF28C3D00000073000000000000000000000000000000000000001D00000000providers-1.8.1/rebar.config{erl_opts, [{platform_define, "R14", no_callback_support}
           ,debug_info]}.
{deps, [{getopt, "1.0.1"}]}.

07070100000005000081A4000003E800000064000000015CF28C3D000000A9000000000000000000000000000000000000001B00000000providers-1.8.1/rebar.lock{"1.1.0",
[{<<"getopt">>,{pkg,<<"getopt">>,<<"1.0.1">>},0}]}.
[
{pkg_hash,[
 {<<"getopt">>, <<"C73A9FA687B217F2FF79F68A3B637711BB1936E712B521D8CE466B29CBF7808A">>}]}
].
07070100000006000041ED000003E800000064000000025CF28C3D00000000000000000000000000000000000000000000001400000000providers-1.8.1/src07070100000007000081A4000003E800000064000000015CF28C3D0000023B000000000000000000000000000000000000002100000000providers-1.8.1/src/provider.erl-module(provider).

-export([]).

-ifdef(no_callback_support).

%% In the case where R14 or lower is being used to compile the system
%% we need to export a behaviour info
-export([behaviour_info/1]).

-spec behaviour_info(atom()) -> [{atom(), arity()}] | undefined.
behaviour_info(callbacks) ->
    [{init, 1},
     {do, 1},
     {format_error, 1}];
behaviour_info(_) ->
    undefined.

-else.

-callback init(any()) -> {ok, any()}.
-callback do(any()) -> {ok, any()} | {error, string()} | {error, {module(), any()}}.
-callback format_error(any()) -> iolist().

-endif.
07070100000008000081A4000003E800000064000000015CF28C3D00000135000000000000000000000000000000000000002600000000providers-1.8.1/src/providers.app.src{application,providers,
             [{description,"Providers provider."},
              {vsn,"1.8.1"},
              {registered,[]},
              {applications,[kernel,stdlib,getopt]},
              {licenses,["Apache 2.0"]},
              {links,[{"Github","https://github.com/tsloughter/providers"}]}]}.
07070100000009000081A4000003E800000064000000015CF28C3D0000301B000000000000000000000000000000000000002200000000providers-1.8.1/src/providers.erl-module(providers).

%% API
-export([create/1,
         new/2,
         do/2,
         profiles/1,
         namespace/1,
         module/1,
         impl/1,
         opts/1,
         desc/1,
         process_deps/2,
         get_provider/2,
         get_provider/3,
         get_provider_by_module/2,
         get_providers_by_namespace/2,
         get_target_providers/2,
         get_target_providers/3,
         hooks/1,
         hooks/2,
         help/1,
         help/2,
         help/3,
         format_error/1,
         format_error/2,
         format/1]).

-export_type([t/0]).

-include("providers.hrl").

%%%===================================================================
%%% Types
%%%===================================================================

-record(provider,  { name              :: atom(),               % The 'user friendly' name of the task
                     module            :: module(),             % The module implementation of the task
                     hooks             :: {list(), list()},
                     bare              :: boolean(),            % Indicates whether task can be run by user
                     deps              :: [atom()],             % The list of dependencies
                     desc              :: string(),             % The description for the task
                     short_desc        :: string(),             % A one line short description of the task
                     example           :: string() | undefined, % An example of the task usage
                     opts              :: list(),               % The list of options that the task requires/understands
                     profiles          :: [atom()],               % Profile to use for provider
                     namespace=default :: atom()                % namespace the provider is registered in
                   }).

-type t() :: #provider{}.

%%%===================================================================
%%% API
%%%===================================================================

%% @doc create a new provider object from the specified module. The
%% module should implement the provider behaviour.
%%
%% @param ModuleName The module name.
%% @param State0 The current state of the system
-spec new(module(), any()) -> {ok, any()} | {error, string()}.
new(ModuleName, State) when is_atom(ModuleName) ->
    case code:which(ModuleName) of
        non_existing ->
            {error, io_lib:format("Module ~p does not exist.", [ModuleName])};
        _ ->
            ModuleName:init(State)
    end.

-spec create(list()) -> t().
create(Attrs) ->
    #provider{ name          = proplists:get_value(name, Attrs, undefined)
             , module        = proplists:get_value(module, Attrs, undefined)
             , hooks         = proplists:get_value(hooks, Attrs, {[], []})
             , bare          = proplists:get_value(bare, Attrs, true)
             , deps          = proplists:get_value(deps, Attrs, [])
             , desc          = proplists:get_value(desc, Attrs, "")
             , short_desc    = proplists:get_value(short_desc, Attrs, "")
             , example       = proplists:get_value(example, Attrs, "")
             , opts          = proplists:get_value(opts, Attrs, [])
             , profiles      = proplists:get_value(profiles, Attrs, [default])
             , namespace     = proplists:get_value(namespace, Attrs, default) }.

%% @doc Run provider and hooks.
%%
%% @param Provider the provider object
%% @param State the current state of the system
-spec do(t(), any()) -> {ok, any()} | {error, string()} | {error, {module(), any()}}.
do(Provider, State) ->
    (Provider#provider.module):do(State).

-spec profiles(t()) -> [atom()].
profiles(Provider) ->
    Provider#provider.profiles.

-spec namespace(t()) -> atom().
namespace(Provider) ->
    Provider#provider.namespace.

%%% @doc get the name of the module that implements the provider
-spec module(t()) -> module().
module(Provider) ->
    Provider#provider.module.

-spec impl(t()) -> atom().
impl(Provider) ->
    Provider#provider.name.

-spec opts(t()) -> list().
opts(Provider) ->
    Provider#provider.opts.

-spec desc(t()) -> string().
desc(Provider) ->
    Provider#provider.desc.

-spec hooks(t()) -> {[t()], [t()]}.
hooks(Provider) ->
    Provider#provider.hooks.

-spec hooks(t(), {[t()], [t()]}) -> t().
hooks(Provider, Hooks) ->
    Provider#provider{hooks=Hooks}.

help(Providers) when is_list(Providers) ->
    Dict = lists:foldl(
        fun(P, Dict) when P#provider.bare =:= true ->
            dict:append(P#provider.namespace,
                        {ec_cnv:to_list(P#provider.name),
                         P#provider.short_desc},
                        Dict)
        ;  (_, Dict) -> Dict
        end,
        dict:new(),
        Providers),
    Namespaces = [default |
                 lists:usort([NS || #provider{namespace=NS} <- Providers,
                                    NS =/= default])],
    namespace_help(Dict, Namespaces);
help(#provider{opts=Opts
              ,desc=Desc
              ,namespace=Namespace
              ,name=Name}) ->
    case Desc of
        Desc when length(Desc) > 0 ->
            io:format(Desc++"~n");
        _ ->
            ok
    end,

StrNS = case Namespace of
        default -> "";
        _ -> atom_to_list(Namespace) ++ " "
    end,

case Opts of
        [] ->
            io:format("Usage: rebar3 ~s~p~n", [StrNS, Name]);
        _ ->
            getopt:usage(Opts, "rebar3 " ++ StrNS ++ atom_to_list(Name), "", [])
    end.

help(Name, Providers) when is_list(Name) ->
    help(list_to_atom(Name), Providers, default);
help(Name, Providers) when is_atom(Name) ->
    help(Name, Providers, default).

help(Name, Providers, Namespace) when is_list(Name) ->
    help(list_to_atom(Name), Providers, Namespace);
help(Name, Providers, Namespace) when is_atom(Name) ->
    Provider = providers:get_provider(Name, Providers, Namespace),
    help(Provider).

format_error({provider_not_found, Namespace, ProviderName}) ->
    io_lib:format("Unable to resolve provider ~s in namespace ~s", [ProviderName, Namespace]).

%% @doc format an error produced from a provider.
-spec format_error(t(), Reason::term()) -> iolist().
format_error(#provider{module=Mod}, Error) ->
    Mod:format_error(Error).

%% @doc print the provider module name
%%
%% @param T - The provider
%% @return An iolist describing the provider
-spec format(t()) -> iolist().
format(#provider{name=Name}) ->
    atom_to_list(Name).

-spec get_target_providers({atom(),atom()} | atom(), list()) -> [{atom(), atom()}].
get_target_providers({Namespace, Target}, Providers) ->
    get_target_providers(Target, Providers, Namespace);
get_target_providers(Target, Providers) ->
    get_target_providers(Target, Providers, default).

get_target_providers(Target, Providers, Namespace) ->
    TargetProviders = lists:filter(fun(#provider{name=T, namespace=NS})
                                         when T =:= Target, NS =:= Namespace ->
                                           true;
                                      (_) ->
                                           false
                                   end, Providers),
    expand_hooks(process_deps(TargetProviders, Providers), [], Providers).

expand_hooks([], TargetProviders, _Providers) ->
    TargetProviders;
expand_hooks([Provider | Tail], TargetProviders, Providers) ->
    {PreHooks, PostHooks} = hooks(get_provider(Provider, Providers)),
    expand_hooks(Tail, TargetProviders++PreHooks++[Provider | PostHooks], Providers).

-spec get_provider(atom() | {atom(), atom()}, [t()]) -> t() | not_found.
get_provider({Namespace, ProviderName}, Providers) ->
    get_provider(ProviderName, Providers, Namespace);
get_provider(ProviderName, Providers) ->
    get_provider(ProviderName, Providers, default).

-spec get_provider(atom(), [t()], atom()) -> t() | not_found.
get_provider(ProviderName,
             [Provider = #provider{name = ProviderName, namespace=Namespace} | _],
             Namespace) ->
    Provider;
get_provider(ProviderName, [_ | Rest], Namespace) ->
    get_provider(ProviderName, Rest, Namespace);
get_provider(_, _, _) ->
    not_found.

-spec get_provider_by_module(atom(), [t()]) -> t() | not_found.
get_provider_by_module(ProviderModule, [Provider = #provider{module = ProviderModule} | _]) ->
    Provider;
get_provider_by_module(ProviderModule, [_ | Rest]) ->
    get_provider_by_module(ProviderModule, Rest);
get_provider_by_module(_ProviderModule, _) ->
    not_found.

-spec get_providers_by_namespace(atom(), [t()]) -> [t()].
get_providers_by_namespace(Namespace, [Provider = #provider{namespace = Namespace} | Rest]) ->
    [Provider | get_providers_by_namespace(Namespace, Rest)];
get_providers_by_namespace(Namespace, [_ | Rest]) ->
    get_providers_by_namespace(Namespace, Rest);
get_providers_by_namespace(_Namespace, []) ->
    [].

process_deps([], _Providers) ->
    [];
process_deps(TargetProviders, Providers) ->
    DepChain = lists:flatmap(fun(Provider) ->
                                     {DC, _, _} = process_deps(Provider, Providers, []),
                                     DC
                             end, TargetProviders),
    Providers1 = lists:flatten([{{none, none},
                               {P#provider.namespace, P#provider.name}} || P <- TargetProviders]
                             ++ DepChain),
    case reorder_providers(Providers1) of
        {error, _}=Error ->
            Error;
        [{none, none} | Rest] ->
            Rest
    end.

process_deps(Provider, Providers, Seen) ->
    case lists:member(Provider, Seen) of
        true ->
            {[], Providers, Seen};
        false ->
            Deps = Provider#provider.deps,
            Namespace = Provider#provider.namespace,
            DepList = lists:map(fun({NS, Dep}) ->
                                        {{NS, Dep}, {Namespace, Provider#provider.name}};
                                   (Dep) ->
                                        {{Namespace, Dep}, {Namespace, Provider#provider.name}}
                                end, Deps),
            {NewDeps, _, NewSeen} =
                lists:foldl(fun({NS, Arg}, Acc) ->
                                    process_dep({NS, Arg}, Acc);
                                (Arg, Acc) ->
                                    process_dep({Namespace, Arg}, Acc)
                            end,
                           {[], Providers, Seen}, Deps),
            {[DepList | NewDeps], Providers, NewSeen}
    end.

process_dep({Namespace, ProviderName}, {Deps, Providers, Seen}) ->
    case get_provider(ProviderName, Providers, Namespace) of
        not_found ->
            throw(?PRV_ERROR({provider_not_found, Namespace, ProviderName}));
        Provider ->
            {NewDeps, _, NewSeen} = process_deps(Provider#provider{namespace=Namespace}, Providers, [ProviderName | Seen]),
            {[Deps | NewDeps], Providers, NewSeen}
    end.

%% @doc Reorder the providers according to thier dependency set.
reorder_providers(OProviderList) ->
    case providers_topo:sort(OProviderList) of
        {ok, ProviderList} ->
            ProviderList;
        {error, _} ->
            {error, "There was a cycle in the provider list. Unable to complete build!"}
    end.

%% @doc Extract help values from a list on a per-namespace order
namespace_help(_, []) -> ok;
namespace_help(Dict, [NS|Namespaces]) ->
    Providers = case dict:find(NS, Dict) of
        {ok, Found} -> Found;
        error -> []
    end,
    Help = [case NS of
                default -> {Name, Desc};
                _ -> {"  "++Name, Desc}
            end || {Name, Desc} <- lists:sort(Providers)],
    if Help =:= [] ->
            no_public_providers;
       NS =/= default ->
            io:format("~n~p <task>:~n", [NS]),
            display_help(Help);
       NS =:= default ->
            display_help(Help)
    end,
    namespace_help(Dict, Namespaces).

display_help(Help) ->
    Longest = lists:max([length(X) || {X, _} <- Help]),
    lists:foreach(fun({Name, ShortDesc}) ->
                Length = length(Name),
                Spacing = lists:duplicate(Longest - Length + 8, " "),
                io:format("~s~s~s~n", [Name, Spacing, ShortDesc])
        end, Help).
0707010000000A000081A4000003E800000064000000015CF28C3D00000E92000000000000000000000000000000000000002700000000providers-1.8.1/src/providers_topo.erl%% -*- 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 Joe Armstrong
%%% @author Eric Merritt
%%% @doc
%%%  This is a pretty simple topological sort for erlang. It was
%%%  originally written for ermake by Joe Armstrong back in '98. It
%%%  has been pretty heavily modified by Eric Merritt since '06 and
%%%  modified again for relx/rebar3 by Tristan Sloughter.
%%%
%%%  A partial order on the set S is a set of pairs {Xi,Xj} such that
%%%  some relation between Xi and Xj is obeyed.
%%%
%%%  A topological sort of a partial order is a sequence of elements
%%%  [X1, X2, X3 ...] such that if whenever {Xi, Xj} is in the partial
%%%  order i &lt; j
%%% @end
%%%-------------------------------------------------------------------
-module(providers_topo).

-export([sort/1]).

%%====================================================================
%% Types
%%====================================================================
-type pair() :: {{atom(), atom()}, {atom(), atom()}}.
-type name() :: {atom(), atom()}.
-type element() :: name() | pair().

%%====================================================================
%% API
%%====================================================================

%% @doc Do a topological sort on the list of pairs.
-spec sort([pair()]) -> {ok, [{atom(), atom()}]} | {error, any()}.
sort(Pairs) ->
    iterate(Pairs, [], all(Pairs)).

%%====================================================================
%% Internal Functions
%%====================================================================

%% @doc Iterate over the system.  @private
-spec iterate([pair()], [name()], [name()]) ->
    {ok, [name()]} | {error, string()}.
iterate([], L, All) ->
    {ok, remove_duplicates(L ++ subtract(All, L))};
iterate(Pairs, L, All) ->
    case subtract(lhs(Pairs), rhs(Pairs)) of
        []  ->
            {error, "Cycle found in providers dependencies."};
        Lhs ->
            iterate(remove_pairs(Lhs, Pairs), L ++ Lhs, All)
    end.

-spec all([pair()]) -> [{atom(), atom()}].
all(L) ->
    lhs(L) ++ rhs(L).

-spec lhs([pair()]) -> [{atom(), atom()}].
lhs(L) ->
    [X || {X, _} <- L].

-spec rhs([pair()]) -> [{atom(), atom()}].
rhs(L) ->
    [Y || {_, Y} <- L].

%% @doc all the elements in L1 which are not in L2
%% @private
-spec subtract([element()], [element()]) -> [element()].
subtract(L1, L2) ->
    [X || X <- L1, not lists:member(X, L2)].

%% @doc remove dups from the list.  @private
-spec remove_duplicates([element()]) -> [element()].
remove_duplicates([H|T]) ->
  case lists:member(H, T) of
      true  ->
          remove_duplicates(T);
      false ->
          [H|remove_duplicates(T)]
  end;
remove_duplicates([]) ->
    [].

%% @doc
%%   removes all pairs from L2 where the first element
%%   of each pair is a member of L1
%%
%%   L2' L1 = [X] L2 = [{X,Y}].
%% @private
-spec remove_pairs([{atom(), atom()}], [pair()]) -> [pair()].
remove_pairs(L1, L2) ->
    [All || All={X, _Y} <- L2, not lists:member(X, L1)].
0707010000000B000041ED000003E800000064000000025CF28C3D00000000000000000000000000000000000000000000001500000000providers-1.8.1/test0707010000000C000081A4000003E800000064000000015CF28C3D00000B7E000000000000000000000000000000000000002900000000providers-1.8.1/test/providers_SUITE.erl-module(providers_SUITE).
-include_lib("common_test/include/ct.hrl").
-include_lib("eunit/include/eunit.hrl").
-compile(export_all).

all() -> [namespaces].

namespaces(_Config) ->
    Providers = make_providers([
        [{name, a},
         {module, mod_default_a},
         {deps, []}],
        [{name, a},
         {module, mod_ns_a},
         {deps, []},
         {namespace, ns}],
        [{name, b},
         {module, mod_default_b},
         {deps, [a]}, % mod_undef_a
         {namespace, default}],
        [{name, c},
         {module, mod_ns_c},
         {deps, [a]}, % mod_ns_a
         {namespace, ns}],
        [{name, d},
         {module, mod_default_d},
         {deps, [b, {ns, c}]}], % undef_b, undef_a, ns_c, ns_a
        [{name, d},
         {module, mod_ns_d},
         {deps, [{default, b}, c]}, % undef_b, undef_a, ns_c, ns_a
         {namespace, ns}]
    ]),
    [DA, NSA, DB, NSC, DD, NSD] = Providers,
    ?assertEqual(DD,  providers:get_provider(d, Providers)),
    ?assertEqual(DD, providers:get_provider(d, Providers, default)),
    ?assertEqual(NSD, providers:get_provider(d, Providers, ns)),
    ?assertEqual(NSD, providers:get_provider({ns,d}, Providers)),
    ?assertNotEqual(DD, NSD),
    ?assertEqual(default, providers:namespace(DA)),
    ?assertEqual(default, providers:namespace(DB)),
    ?assertEqual(default, providers:namespace(DD)),
    ?assertEqual(ns, providers:namespace(NSA)),
    ?assertEqual(ns, providers:namespace(NSC)),
    ?assertEqual(ns, providers:namespace(NSD)),
    ?assertEqual("a", providers:format(DA)),
    ?assertEqual("a", providers:format(NSA)),
    ?assertEqual([{default,a}],
                 providers:get_target_providers(a, Providers)),
    ?assertEqual([{default,a}],
                 providers:get_target_providers(a, Providers, default)),
    ?assertEqual([{ns,a}],
                 providers:get_target_providers(a, Providers, ns)),
    ?assertEqual([{default,a},{default,b}],
                 providers:get_target_providers(b, Providers)),
    ?assertEqual([{default,a},{default,b}],
                 providers:get_target_providers(b, Providers, default)),
    ?assertEqual([{ns,a},{ns,c}],
                 providers:get_target_providers(c, Providers, ns)),
    ?assertEqual([{default,a},{ns,a},{default,b},{ns,c},{default,d}],
                 providers:get_target_providers(d, Providers, default)),
    ?assertEqual([{default,a},{ns,a},{default,b},{ns,c},{ns,d}],
                 providers:get_target_providers(d, Providers, ns)),
    ?assertEqual([{default,a},{ns,a},{default,b},{ns,c},{ns,d}],
                 providers:get_target_providers({ns,d}, Providers)),
    ?assertEqual([DA,DB,DD],
                 providers:get_providers_by_namespace(default,Providers)),
    ?assertEqual([NSA,NSC,NSD],
                 providers:get_providers_by_namespace(ns,Providers)),
    ok.

make_providers(Proplists) ->
    [providers:create(List) || List <- Proplists].

07070100000000000000000000000000000000000000010000000000000000000000000000000000000000000000000000000B00000000TRAILER!!!67 blocks

Places

File providers-1.8.1.obscpio of Package erlang-providers

Places