mirror of
https://github.com/lunarmodules/luasocket.git
synced 2024-11-19 11:48:21 +01:00
119 lines
3.9 KiB
C
119 lines
3.9 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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* RCS ID: $Id$
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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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/*-------------------------------------------------------------------------*\
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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 mod[] = {
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{"auxiliar", aux_open},
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{"except", except_open},
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{"timeout", tm_open},
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{"buffer", buf_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 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_checkint(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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sock_close();
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return 0;
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}
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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 (sock_open()) {
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/* whoever is loading the library replaced the global environment
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* with the namespace table */
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lua_pushvalue(L, LUA_GLOBALSINDEX);
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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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/* export other functions */
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luaL_openlib(L, NULL, func, 0);
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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(lua_State *L) {
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int i;
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base_open(L);
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for (i = 0; mod[i].name; i++) mod[i].func(L);
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return 1;
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}
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