add pkg resource

1 files changed, 28 insertions, 0 deletions

diff --git a/src/rebar_pkg_resource.erl b/src/rebar_pkg_resource.erl
new file mode 100644
index 0000000..1590458
--- /dev/null
+++ b/src/rebar_pkg_resource.erl
@@ -0,0 +1,28 @@
+%% -*- erlang-indent-level: 4;indent-tabs-mode: nil -*-
+%% ex: ts=4 sw=4 et
+-module(rebar_pkg_resource).
+
+-behaviour(rebar_resource).
+
+-export([lock/2
+        ,download/2
+        ,needs_update/2]).
+
+-include("rebar.hrl").
+
+lock(_AppDir, Source) ->
+    Source.
+
+needs_update(Dir, {pkg, _Name, Vsn, _Url}) ->
+    [AppInfo] = rebar_app_discover:find_apps([Dir], all),
+    case rebar_app_info:original_vsn(AppInfo) =:= ec_cnv:to_list(Vsn) of
+        true ->
+            false;
+        false ->
+            true
+    end.
+
+download(Dir, {pkg, _Name, _Vsn, Url}) ->
+    TmpFile = filename:join(Dir, "package.tar.gz"),
+    {ok, saved_to_file} = httpc:request(get, {binary_to_list(Url), []}, [], [{stream, TmpFile}]),
+    {tarball, TmpFile}.