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/*
* Copyright 2014 The Luvit Authors. All Rights Reserved.
*
* Licensed 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.
*
*/
#include "luv.h"
static uv_signal_t* luv_check_signal(lua_State* L, int index) {
uv_signal_t* handle = luv_checkudata(L, index, "uv_signal");
luaL_argcheck(L, handle->type == UV_SIGNAL && handle->data, index, "Expected uv_signal_t");
return handle;
}
static int luv_new_signal(lua_State* L) {
uv_signal_t* handle = luv_newuserdata(L, sizeof(*handle));
int ret = uv_signal_init(luv_loop(L), handle);
if (ret < 0) {
lua_pop(L, 1);
return luv_error(L, ret);
}
handle->data = luv_setup_handle(L);
return 1;
}
static void luv_signal_cb(uv_signal_t* handle, int signum) {
lua_State* L = luv_state(handle->loop);
luv_handle_t* data = handle->data;
lua_pushstring(L, luv_sig_num_to_string(signum));
luv_call_callback(L, data, LUV_SIGNAL, 1);
}
static int luv_signal_start(lua_State* L) {
uv_signal_t* handle = luv_check_signal(L, 1);
int signum, ret;
if (lua_isnumber(L, 2)) {
signum = lua_tointeger(L, 2);
}
else if (lua_isstring(L, 2)) {
signum = luv_sig_string_to_num(luaL_checkstring(L, 2));
luaL_argcheck(L, signum, 2, "Invalid Signal name");
}
else {
return luaL_argerror(L, 2, "Missing Signal name");
}
if (!lua_isnoneornil(L, 3)) {
luv_check_callback(L, handle->data, LUV_SIGNAL, 3);
}
ret = uv_signal_start(handle, luv_signal_cb, signum);
if (ret < 0) return luv_error(L, ret);
lua_pushinteger(L, ret);
return 1;
}
static int luv_signal_stop(lua_State* L) {
uv_signal_t* handle = luv_check_signal(L, 1);
int ret = uv_signal_stop(handle);
if (ret < 0) return luv_error(L, ret);
lua_pushinteger(L, ret);
return 1;
}
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