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rebar3_hex src rebar3_hex_info.erl
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src/rebar3_hex_info.erl

-module(rebar3_hex_info).
-behaviour(provider).
-export([init/1
,do/1
,format_error/1]).
-include("rebar3_hex.hrl").
-include_lib("providers/include/providers.hrl").
-define(PROVIDER, info).
-define(DEPS, []).
-define(ENDPOINT, "packages").
%% ===================================================================
%% Public API
%% ===================================================================
-spec init(rebar_state:t()) -> {ok, rebar_state:t()}.
init(State) ->
Provider = providers:create([
{name, ?PROVIDER},
{module, ?MODULE},
{namespace, hex},
{bare, false},
{deps, ?DEPS},
{example, "rebar3 hex user <command>"},
{short_desc, "."},
{desc, ""},
{opts, []}
]),
State1 = rebar_state:add_provider(State, Provider),
{ok, State1}.
-spec do(rebar_state:t()) -> {ok, rebar_state:t()} | {error, string()}.
do(State) ->
case rebar_state:command_args(State) of
[] ->
general();
[Package] ->
package(Package);
[Package, Version] ->
release(Package, Version)
end,
{ok, State}.
-spec format_error(any()) -> iolist().
format_error(Reason) ->
io_lib:format("~p", [Reason]).
general() ->
ok.
package(Package) ->
case rebar3_hex_http:get(filename:join(?ENDPOINT, Package), []) of
{ok, Json} ->
ec_talk:say("~s", [Package]),
Releases = proplists:get_value(<<"releases">>, Json, []),
ec_talk:say(" Releases: ~s", [string:join([binary_to_list(proplists:get_value(<<"version">>, X)) || X <- Releases], ", ")]),
Meta = proplists:get_value(<<"meta">>, Json, []),
Contributors = proplists:get_value(<<"contributors">>, Meta, []),
ec_talk:say(" Contributors: ~s", [join(Contributors)]),
Licenses = proplists:get_value(<<"licenses">>, Meta, []),
ec_talk:say(" Licenses: ~s", [join(Licenses)]),
Links = proplists:get_value(<<"links">>, Meta, []),
ec_talk:say(" Links:\n ~s", [tup_list_join(Links)]),
Description = proplists:get_value(<<"description">>, Meta, []),
ec_talk:say(Description, []);
{error, 404} ->
rebar_api:error("No package with name ~s", [Package]);
_ ->
rebar_api:error("Failed to retrieve package information")
end.
release(Package, Version) ->
case rebar3_hex_http:get(filename:join([?ENDPOINT, Package, "releases", Version]), []) of
{ok, Json} ->
ec_talk:say("~s ~s", [Package, Version]),
Requirements = proplists:get_value(<<"requirements">>, Json, []),
ec_talk:say(" Dependencies:\n ~s", [req_join(Requirements)]);
{error, 404} ->
rebar_api:error("No package with name ~s", [Package]);
_ ->
rebar_api:error("Failed to retrieve package information")
end.
join(List) ->
string:join([binary_to_list(X) || X <- List], ", ").
tup_list_join(List) ->
string:join([binary_to_list(X)++": "++binary_to_list(Y) || {X, Y} <- List], "\n ").
req_join(List) ->
string:join([binary_to_list(X)++": "++binary_to_list(proplists:get_value(<<"requirement">>, Y)) || {X, Y} <- List], "\n ").