From b2cfdcb34af8e8dab0661820572ec01aa55bf30e Mon Sep 17 00:00:00 2001
From: Dave Smith <dizzyd@dizzyd.com>
Date: Thu, 25 Mar 2010 22:32:53 -0600
Subject: [PATCH] Adding basic NIF template

---
 priv/templates/basicnif.c        | 51 ++++++++++++++++++++++++++++++++
 priv/templates/basicnif.erl      | 36 ++++++++++++++++++++++
 priv/templates/basicnif.template |  3 ++
 3 files changed, 90 insertions(+)
 create mode 100644 priv/templates/basicnif.c
 create mode 100644 priv/templates/basicnif.erl
 create mode 100644 priv/templates/basicnif.template

diff --git a/priv/templates/basicnif.c b/priv/templates/basicnif.c
new file mode 100644
index 0000000..36bf938
--- /dev/null
+++ b/priv/templates/basicnif.c
@@ -0,0 +1,51 @@
+
+#include "erl_nif.h"
+
+static ErlNifResourceType* {{module}}_RESOURCE;
+
+typedef struct
+{
+} {{module}}_handle;
+
+// Prototypes
+ERL_NIF_TERM {{module}}_new(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+ERL_NIF_TERM {{module}}_myfunction(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[]);
+
+static ErlNifFunc nif_funcs[] =
+{
+    {"new", 0, {{module}}_new},
+    {"myfunction", 1, {{module}}_myfunction}
+};
+
+ERL_NIF_TERM {{module}}_new(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{
+    {{module}}_handle* handle = enif_alloc_resource(env,
+                                                    {{module}}_RESOURCE,
+                                                    sizeof({{module}}_handle));
+    ERL_NIF_TERM result = enif_make_resource(env, handle);
+    enif_release_resource(env, handle);
+    return enif_make_tuple2(env, enif_make_atom(env, "ok"), result);
+}
+
+
+ERL_NIF_TERM {{module}}_myfunction(ErlNifEnv* env, int argc, const ERL_NIF_TERM argv[])
+{
+    return enif_make_atom(env, "ok");
+}
+
+static void {{module}}_resource_cleanup(ErlNifEnv* env, void* arg)
+{
+    // Delete any dynamically allocated memory stored in {{module}}_handle
+    // {{module}}_handle* handle = ({{module}}_handle*)arg;
+}
+
+static int on_load(ErlNifEnv* env, void** priv_data, ERL_NIF_TERM load_info)
+{
+    {{module}}_RESOURCE = enif_open_resource_type(env, "{{module}}_resource",
+                                                  &{{module}}_resource_cleanup,
+                                                  ERL_NIF_RT_CREATE | ERL_NIF_RT_TAKEOVER,
+                                                  0);
+    return 0;
+}
+
+ERL_NIF_INIT({{module}}, nif_funcs, &on_load, NULL, NULL, NULL);
diff --git a/priv/templates/basicnif.erl b/priv/templates/basicnif.erl
new file mode 100644
index 0000000..5f1ce11
--- /dev/null
+++ b/priv/templates/basicnif.erl
@@ -0,0 +1,36 @@
+-module({{module}}).
+
+-export([new/0,
+         myfunction/1]).
+
+-on_load(init/0).
+
+-ifdef(TEST).
+-include_lib("eunit/include/eunit.hrl").
+-endif.
+
+init() ->
+    case code:priv_dir({{module}}) of
+        {error, bad_name} ->
+            SoName = filename:join("../priv", {{module}});
+        Dir ->
+            SoName = filename:join(Dir, {{module}})
+    end,
+    erlang:load_nif(SoName, 0).
+
+new() ->
+    "NIF library not loaded".
+
+myfunction(Ref) ->
+    "NIF library not loaded".
+
+%% ===================================================================
+%% EUnit tests
+%% ===================================================================
+-ifdef(TEST).
+
+basic_test() ->
+    {ok, Ref} = new(),
+    ok = myfunction(Ref).
+
+-endif.
diff --git a/priv/templates/basicnif.template b/priv/templates/basicnif.template
new file mode 100644
index 0000000..6dde8bb
--- /dev/null
+++ b/priv/templates/basicnif.template
@@ -0,0 +1,3 @@
+{variables, [{module, "mymodule"}]}.
+{template, "basicnif.erl", "src/{{module}}.erl"}.
+{template, "basicnif.c", "c_src/{{module}}.c"}.