131 lines
4.3 KiB
C++
131 lines
4.3 KiB
C++
/*=========================================================================*\
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* LuaSocket toolkit
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* Networking support for the Lua language
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* Diego Nehab
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* 26/11/1999
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*
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* This library is part of an effort to progressively increase the network
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* connectivity of the Lua language. The Lua interface to networking
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* functions follows the Sockets API closely, trying to simplify all tasks
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* involved in setting up both client and server connections. The provided
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* IO routines, however, follow the Lua style, being very similar to the
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* standard Lua read and write functions.
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\*=========================================================================*/
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/*=========================================================================*\
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* Standard include files
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\*=========================================================================*/
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#include "lua.h"
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#include "lauxlib.h"
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/*=========================================================================*\
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* LuaSocket includes
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\*=========================================================================*/
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#include "luasocket.h"
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#include "auxiliar.h"
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#include "except.h"
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#include "timeout.h"
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#include "buffer.h"
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#include "inet.h"
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#include "tcp.h"
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#include "udp.h"
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#include "select.h"
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namespace NS_SLUA {
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/*-------------------------------------------------------------------------*\
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* Internal function prototypes
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\*-------------------------------------------------------------------------*/
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static int global_skip(lua_State *L);
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static int global_unload(lua_State *L);
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static int base_open(lua_State *L);
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/*-------------------------------------------------------------------------*\
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* Modules and functions
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\*-------------------------------------------------------------------------*/
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static const luaL_Reg luasocket_mod[] = {
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{"auxiliar", auxiliar_open},
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{"except", except_open},
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{"timeout", timeout_open},
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{"buffer", buffer_open},
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{"inet", inet_open},
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{"tcp", tcp_open},
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{"udp", udp_open},
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{"select", select_open},
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{NULL, NULL}
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};
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static luaL_Reg luasocket_func[] = {
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{"skip", global_skip},
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{"__unload", global_unload},
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{NULL, NULL}
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};
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/*-------------------------------------------------------------------------*\
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* Skip a few arguments
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\*-------------------------------------------------------------------------*/
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static int global_skip(lua_State *L) {
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int amount = luaL_checkinteger(L, 1);
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int ret = lua_gettop(L) - amount - 1;
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return ret >= 0 ? ret : 0;
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}
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/*-------------------------------------------------------------------------*\
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* Unloads the library
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\*-------------------------------------------------------------------------*/
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static int global_unload(lua_State *L) {
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(void) L;
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socket_close();
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return 0;
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}
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#if LUA_VERSION_NUM > 501
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int luaL_typerror (lua_State *L, int narg, const char *tname) {
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const char *msg = lua_pushfstring(L, "%s expected, got %s",
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tname, luaL_typename(L, narg));
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return luaL_argerror(L, narg, msg);
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}
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#endif
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/*-------------------------------------------------------------------------*\
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* Setup basic stuff.
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\*-------------------------------------------------------------------------*/
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static int base_open(lua_State *L) {
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if (socket_open()) {
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/* export functions (and leave namespace table on top of stack) */
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#if LUA_VERSION_NUM > 501 && !defined(LUA_COMPAT_MODULE)
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lua_newtable(L);
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luaL_setfuncs(L, luasocket_func, 0);
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#else
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luaL_openlib(L, "socket", luasocket_func, 0);
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#endif
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#ifdef LUASOCKET_DEBUG
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lua_pushstring(L, "_DEBUG");
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lua_pushboolean(L, 1);
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lua_rawset(L, -3);
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#endif
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/* make version string available to scripts */
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lua_pushstring(L, "_VERSION");
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lua_pushstring(L, LUASOCKET_VERSION);
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lua_rawset(L, -3);
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return 1;
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} else {
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lua_pushstring(L, "unable to initialize library");
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lua_error(L);
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return 0;
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}
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}
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/*-------------------------------------------------------------------------*\
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* Initializes all library modules.
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\*-------------------------------------------------------------------------*/
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LUASOCKET_API int luaopen_socket_core(lua_State *L) {
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int i;
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base_open(L);
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for (i = 0; luasocket_mod[i].name; i++) luasocket_mod[i].func(L);
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return 1;
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}
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} // end NS_SLUA
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