moonbridge

annotate moonbridge_io.c @ 88:fca51922b708

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Extended I/O library; Integrated new I/O library into moonbridge.c and moonbridge_http.lua
author jbe
date Tue Apr 07 02:15:17 2015 +0200 (2015-04-07)
parents 1d91c6eedf18
children 54e6104c70a6
rev   line source
jbe@79 1
jbe@79 2 #include <stdlib.h>
jbe@79 3 #include <unistd.h>
jbe@79 4 #include <stdint.h>
jbe@79 5 #include <errno.h>
jbe@79 6 #include <string.h>
jbe@79 7 #include <sys/socket.h>
jbe@79 8 #include <sys/select.h>
jbe@81 9 #include <fcntl.h>
jbe@79 10
jbe@79 11 #include <lua.h>
jbe@79 12 #include <lauxlib.h>
jbe@79 13 #include <lualib.h>
jbe@79 14
jbe@80 15 #define MOONBR_IO_MAXSTRERRORLEN 80
jbe@85 16 #define MOONBR_IO_READBUFLEN 4096
jbe@80 17 #define MOONBR_IO_WRITEBUFLEN 4096
jbe@80 18
jbe@80 19 #define moonbr_io_errmsg() \
jbe@80 20 char errmsg[MOONBR_IO_MAXSTRERRORLEN]; \
jbe@80 21 strerror_r(errno, errmsg, MOONBR_IO_MAXSTRERRORLEN)
jbe@80 22
jbe@79 23 #define MOONBR_IO_HANDLE_MT_REGKEY "moonbridge_io_handle"
jbe@79 24 #define MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY "moonbridge_io_handle_public"
jbe@79 25
jbe@79 26 typedef struct {
jbe@79 27 int fd;
jbe@84 28 int issocket;
jbe@88 29 int canshutdown;
jbe@88 30 int shutwr;
jbe@81 31 int nonblocking;
jbe@85 32 int readerr;
jbe@85 33 int readbufcnt;
jbe@81 34 int writeerr;
jbe@83 35 size_t writeleft;
jbe@83 36 #if LUA_VERSION_NUM >= 503
jbe@83 37 lua_Integer writeqin;
jbe@83 38 lua_Integer writeqout;
jbe@83 39 #else
jbe@83 40 int writeqin;
jbe@83 41 int writeqout;
jbe@83 42 #endif
jbe@83 43 size_t writeqoff;
jbe@81 44 int writebufcnt;
jbe@85 45 char readbuf[MOONBR_IO_READBUFLEN];
jbe@80 46 char writebuf[MOONBR_IO_WRITEBUFLEN];
jbe@79 47 } moonbr_io_handle_t;
jbe@79 48
jbe@81 49 static void moonbr_io_handle_set_nonblocking(lua_State *L, moonbr_io_handle_t *handle, int nonblocking) {
jbe@81 50 if (handle->nonblocking != nonblocking) {
jbe@81 51 int flags;
jbe@81 52 flags = fcntl(handle->fd, F_GETFL, 0);
jbe@81 53 if (flags == -1) {
jbe@81 54 moonbr_io_errmsg();
jbe@81 55 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@81 56 }
jbe@81 57 if (nonblocking) flags |= O_NONBLOCK;
jbe@81 58 else flags &= ~O_NONBLOCK;
jbe@81 59 if (fcntl(handle->fd, F_SETFL, flags) == -1) {
jbe@81 60 moonbr_io_errmsg();
jbe@81 61 luaL_error(L, "Unexpected error in fcntl call: %s", errmsg);
jbe@81 62 }
jbe@81 63 }
jbe@81 64 }
jbe@81 65
jbe@87 66 static void moonbr_io_handle_set_linger(lua_State *L, moonbr_io_handle_t *handle, int timeout) {
jbe@87 67 struct linger lingerval = { 0, };
jbe@87 68 if (!handle->issocket) return;
jbe@87 69 if (timeout >= 0) {
jbe@87 70 lingerval.l_onoff = 1;
jbe@87 71 lingerval.l_linger = timeout;
jbe@87 72 }
jbe@87 73 if (setsockopt(handle->fd, SOL_SOCKET, SO_LINGER, &lingerval, sizeof(lingerval))) {
jbe@87 74 moonbr_io_errmsg();
jbe@87 75 luaL_error(L, "Unexpected error in setsockopt call: %s", errmsg);
jbe@87 76 }
jbe@87 77 }
jbe@87 78
jbe@86 79 static int moonbr_io_read_impl(lua_State *L, int nonblocking, int drain) {
jbe@85 80 moonbr_io_handle_t *handle;
jbe@85 81 lua_Integer maxread;
jbe@85 82 const char *terminatorstr;
jbe@85 83 size_t terminatorlen;
jbe@85 84 char terminator;
jbe@85 85 luaL_Buffer luabuf;
jbe@85 86 size_t luabufcnt = 0;
jbe@86 87 int endcnt;
jbe@85 88 char *terminatorpos;
jbe@85 89 ssize_t result;
jbe@85 90 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@85 91 maxread = luaL_optinteger(L, 2, 0);
jbe@85 92 terminatorstr = luaL_optlstring(L, 3, "", &terminatorlen);
jbe@85 93 if (terminatorlen) {
jbe@85 94 luaL_argcheck(L, terminatorlen == 1, 3, "single byte expected");
jbe@85 95 terminator = terminatorstr[0];
jbe@85 96 }
jbe@86 97 lua_settop(L, 1); /* return handle on drain, terminator string may be garbage collected */
jbe@85 98 if (handle->fd < 0) luaL_error(L, "Attempt to read from a closed I/O handle");
jbe@85 99 if (handle->readerr) {
jbe@85 100 lua_pushnil(L);
jbe@85 101 lua_pushliteral(L, "Previous read error");
jbe@85 102 return 2;
jbe@85 103 }
jbe@85 104 moonbr_io_handle_set_nonblocking(L, handle, nonblocking);
jbe@86 105 if (!drain) luaL_buffinit(L, &luabuf);
jbe@85 106 while (1) {
jbe@86 107 endcnt = -1;
jbe@85 108 if (maxread > 0 && handle->readbufcnt >= maxread - luabufcnt) {
jbe@86 109 endcnt = maxread - luabufcnt;
jbe@85 110 } else if (terminatorlen) {
jbe@85 111 terminatorpos = memchr(handle->readbuf, terminator, handle->readbufcnt);
jbe@86 112 if (terminatorpos) endcnt = 1 + (terminatorpos - handle->readbuf);
jbe@85 113 }
jbe@86 114 if (endcnt >= 0) {
jbe@86 115 if (!drain) {
jbe@86 116 luaL_addlstring(&luabuf, handle->readbuf, endcnt);
jbe@86 117 luaL_pushresult(&luabuf);
jbe@86 118 }
jbe@86 119 handle->readbufcnt -= endcnt;
jbe@86 120 memmove(handle->readbuf, handle->readbuf + endcnt, handle->readbufcnt);
jbe@85 121 return 1;
jbe@85 122 }
jbe@86 123 if (!drain) luaL_addlstring(&luabuf, handle->readbuf, handle->readbufcnt);
jbe@85 124 luabufcnt += handle->readbufcnt;
jbe@85 125 handle->readbufcnt = 0;
jbe@85 126 do {
jbe@85 127 result = read(handle->fd, handle->readbuf, MOONBR_IO_READBUFLEN);
jbe@85 128 } while (result < 0 && (errno == EINTR));
jbe@85 129 if (result == 0 || (nonblocking && result < 0 && (errno == EAGAIN || errno == EWOULDBLOCK))) break;
jbe@85 130 if (result < 0) {
jbe@85 131 moonbr_io_errmsg();
jbe@85 132 handle->readerr = 1;
jbe@85 133 lua_pushnil(L);
jbe@85 134 lua_pushstring(L, errmsg);
jbe@85 135 return 2;
jbe@85 136 }
jbe@85 137 handle->readbufcnt += result;
jbe@85 138 }
jbe@86 139 if (!drain) {
jbe@86 140 luaL_addlstring(&luabuf, handle->readbuf, handle->readbufcnt);
jbe@86 141 luaL_pushresult(&luabuf);
jbe@86 142 }
jbe@85 143 handle->readbufcnt = 0;
jbe@85 144 return 1;
jbe@85 145 }
jbe@85 146
jbe@85 147 static int moonbr_io_read(lua_State *L) {
jbe@86 148 return moonbr_io_read_impl(L, 0, 0);
jbe@85 149 }
jbe@85 150
jbe@85 151 static int moonbr_io_read_nb(lua_State *L) {
jbe@86 152 return moonbr_io_read_impl(L, 1, 0);
jbe@86 153 }
jbe@86 154
jbe@86 155 static int moonbr_io_drain(lua_State *L) {
jbe@86 156 return moonbr_io_read_impl(L, 0, 1);
jbe@86 157 }
jbe@86 158
jbe@86 159 static int moonbr_io_drain_nb(lua_State *L) {
jbe@86 160 return moonbr_io_read_impl(L, 1, 1);
jbe@85 161 }
jbe@85 162
jbe@81 163 static int moonbr_io_write_impl(lua_State *L, int nonblocking, int flush) {
jbe@80 164 moonbr_io_handle_t *handle;
jbe@80 165 int i, top;
jbe@80 166 const char *str;
jbe@81 167 size_t strlen, strpos;
jbe@80 168 size_t written;
jbe@80 169 ssize_t result;
jbe@80 170 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@83 171 if (handle->fd < 0) luaL_error(L, "Attempt to write to a closed I/O handle");
jbe@88 172 if (handle->shutwr) luaL_error(L, "Attempt to write to a finished I/O handle");
jbe@81 173 if (handle->writeerr) {
jbe@80 174 lua_pushnil(L);
jbe@80 175 lua_pushliteral(L, "Previous write error");
jbe@80 176 return 2;
jbe@80 177 }
jbe@81 178 moonbr_io_handle_set_nonblocking(L, handle, nonblocking);
jbe@84 179 top = lua_gettop(L);
jbe@81 180 lua_getuservalue(L, 1);
jbe@81 181 lua_getfield(L, -1, "writebuf");
jbe@84 182 for (i=2; i<=top; i++) {
jbe@84 183 luaL_checklstring(L, i, &strlen);
jbe@84 184 lua_pushvalue(L, i);
jbe@84 185 lua_rawseti(L, -2, handle->writeqin++);
jbe@84 186 handle->writeleft += strlen;
jbe@81 187 }
jbe@83 188 while (handle->writeqout != handle->writeqin) {
jbe@83 189 lua_rawgeti(L, -1, handle->writeqout);
jbe@81 190 str = lua_tolstring(L, -1, &strlen);
jbe@81 191 strpos = handle->writeqoff;
jbe@81 192 while (strpos < strlen) {
jbe@81 193 if (strlen - strpos < MOONBR_IO_WRITEBUFLEN - handle->writebufcnt) {
jbe@81 194 memcpy(handle->writebuf + handle->writebufcnt, str + strpos, strlen - strpos);
jbe@81 195 handle->writebufcnt += strlen - strpos;
jbe@80 196 break;
jbe@80 197 } else {
jbe@80 198 written = 0;
jbe@81 199 memcpy(handle->writebuf + handle->writebufcnt, str + strpos, MOONBR_IO_WRITEBUFLEN - handle->writebufcnt);
jbe@81 200 strpos += MOONBR_IO_WRITEBUFLEN - handle->writebufcnt;
jbe@80 201 while (written < MOONBR_IO_WRITEBUFLEN) {
jbe@80 202 result = write(handle->fd, handle->writebuf + written, MOONBR_IO_WRITEBUFLEN - written);
jbe@80 203 if (result < 0) {
jbe@81 204 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@81 205 if (written) {
jbe@81 206 handle->writebufcnt -= written;
jbe@81 207 memmove(handle->writebuf, handle->writebuf + written, handle->writebufcnt);
jbe@81 208 }
jbe@81 209 handle->writeqoff = strpos;
jbe@81 210 goto moonbr_io_write_impl_block;
jbe@81 211 } else if (errno != EINTR) {
jbe@80 212 moonbr_io_errmsg();
jbe@81 213 handle->writeerr = 1;
jbe@80 214 lua_pushnil(L);
jbe@80 215 lua_pushstring(L, errmsg);
jbe@80 216 return 2;
jbe@80 217 }
jbe@80 218 } else {
jbe@80 219 written += result;
jbe@81 220 handle->writeleft -= result;
jbe@80 221 }
jbe@80 222 }
jbe@81 223 handle->writebufcnt = 0;
jbe@80 224 }
jbe@80 225 }
jbe@81 226 handle->writeqoff = 0;
jbe@81 227 lua_pop(L, 1);
jbe@81 228 lua_pushnil(L);
jbe@83 229 lua_rawseti(L, -2, handle->writeqout++);
jbe@80 230 }
jbe@81 231 if (flush) {
jbe@81 232 written = 0;
jbe@81 233 while (written < handle->writebufcnt) {
jbe@81 234 result = write(handle->fd, handle->writebuf + written, handle->writebufcnt - written);
jbe@81 235 if (result < 0) {
jbe@81 236 if (nonblocking && (errno == EAGAIN || errno == EWOULDBLOCK)) {
jbe@81 237 if (written) {
jbe@81 238 handle->writebufcnt -= written;
jbe@81 239 memmove(handle->writebuf, handle->writebuf + written, handle->writebufcnt);
jbe@81 240 }
jbe@81 241 goto moonbr_io_write_impl_block;
jbe@81 242 } else if (errno != EINTR) {
jbe@81 243 moonbr_io_errmsg();
jbe@81 244 handle->writeerr = -1;
jbe@81 245 lua_pushnil(L);
jbe@81 246 lua_pushstring(L, errmsg);
jbe@81 247 return 2;
jbe@81 248 }
jbe@81 249 } else {
jbe@81 250 written += result;
jbe@81 251 handle->writeleft -= result;
jbe@81 252 }
jbe@81 253 }
jbe@81 254 handle->writebufcnt = 0;
jbe@82 255 if (nonblocking) lua_pushinteger(L, 0);
jbe@81 256 } else {
jbe@82 257 if (nonblocking) lua_pushinteger(L, handle->writeleft - handle->writebufcnt);
jbe@81 258 }
jbe@82 259 if (!nonblocking) lua_pushvalue(L, 1);
jbe@80 260 return 1;
jbe@81 261 moonbr_io_write_impl_block:
jbe@81 262 if (flush) lua_pushinteger(L, handle->writeleft);
jbe@81 263 else lua_pushinteger(L, handle->writeleft - handle->writebufcnt);
jbe@81 264 return 1;
jbe@81 265 }
jbe@81 266
jbe@81 267 static int moonbr_io_write(lua_State *L) {
jbe@81 268 return moonbr_io_write_impl(L, 0, 0);
jbe@81 269 }
jbe@81 270
jbe@81 271 static int moonbr_io_write_nb(lua_State *L) {
jbe@81 272 return moonbr_io_write_impl(L, 1, 0);
jbe@80 273 }
jbe@80 274
jbe@80 275 static int moonbr_io_flush(lua_State *L) {
jbe@81 276 return moonbr_io_write_impl(L, 0, 1);
jbe@81 277 }
jbe@81 278
jbe@81 279 static int moonbr_io_flush_nb(lua_State *L) {
jbe@81 280 return moonbr_io_write_impl(L, 1, 1);
jbe@80 281 }
jbe@80 282
jbe@88 283 static int moonbr_io_finish(lua_State *L) {
jbe@88 284 moonbr_io_handle_t *handle;
jbe@88 285 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@88 286 if (handle->fd < 0) luaL_error(L, "Attempt to finish a closed I/O handle");
jbe@88 287 if (handle->shutwr) luaL_error(L, "Attempt to finish a finished I/O handle");
jbe@88 288 handle->shutwr = 1;
jbe@88 289 if (handle->canshutdown) {
jbe@88 290 if (handle->writeleft) {
jbe@88 291 lua_pushcfunction(L, moonbr_io_flush);
jbe@88 292 lua_pushvalue(L, 1);
jbe@88 293 lua_call(L, 1, 2);
jbe@88 294 if (!lua_toboolean(L, -2)) return 2;
jbe@88 295 }
jbe@88 296 if (shutdown(handle->fd, SHUT_WR)) {
jbe@88 297 moonbr_io_errmsg();
jbe@88 298 lua_pushnil(L);
jbe@88 299 lua_pushstring(L, errmsg);
jbe@88 300 return 2;
jbe@88 301 }
jbe@88 302 }
jbe@88 303 lua_pushboolean(L, 1);
jbe@88 304 return 1;
jbe@88 305 }
jbe@88 306
jbe@87 307 static int moonbr_io_close(lua_State *L) {
jbe@83 308 moonbr_io_handle_t *handle;
jbe@87 309 int timeout;
jbe@83 310 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@87 311 timeout = luaL_optinteger(L, 2, -1);
jbe@83 312 if (handle->fd < 0) luaL_error(L, "Attempt to close a closed I/O handle");
jbe@87 313 if (timeout != 0) {
jbe@87 314 if (handle->writeleft) {
jbe@87 315 lua_pushcfunction(L, moonbr_io_flush);
jbe@87 316 lua_pushvalue(L, 1);
jbe@87 317 lua_call(L, 1, 2);
jbe@87 318 if (!lua_toboolean(L, -2)) {
jbe@87 319 close(handle->fd);
jbe@87 320 handle->fd = -1;
jbe@87 321 return 2;
jbe@87 322 }
jbe@83 323 }
jbe@87 324 moonbr_io_handle_set_linger(L, handle, timeout);
jbe@83 325 }
jbe@83 326 if (close(handle->fd)) {
jbe@83 327 moonbr_io_errmsg();
jbe@83 328 handle->fd = -1;
jbe@83 329 lua_pushnil(L);
jbe@83 330 lua_pushstring(L, errmsg);
jbe@83 331 return 2;
jbe@83 332 }
jbe@83 333 handle->fd = -1;
jbe@83 334 lua_pushboolean(L, 1);
jbe@83 335 return 1;
jbe@84 336
jbe@83 337 }
jbe@83 338
jbe@84 339 static int moonbr_io_reset(lua_State *L) {
jbe@87 340 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@87 341 lua_settop(L, 1);
jbe@87 342 lua_pushcfunction(L, moonbr_io_close);
jbe@87 343 lua_insert(L, 1);
jbe@87 344 lua_pushinteger(L, 0);
jbe@87 345 lua_call(L, 2, LUA_MULTRET);
jbe@87 346 return lua_gettop(L);
jbe@84 347 }
jbe@84 348
jbe@88 349 static int moonbr_io_gc(lua_State *L) {
jbe@88 350 moonbr_io_handle_t *handle;
jbe@88 351 handle = luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@88 352 if (handle->fd >= 0) {
jbe@88 353 lua_pushcfunction(L, moonbr_io_close);
jbe@88 354 lua_pushvalue(L, 1);
jbe@88 355 lua_pushinteger(L, 0);
jbe@88 356 lua_call(L, 2, 0);
jbe@88 357 }
jbe@88 358 return 0;
jbe@88 359 }
jbe@88 360
jbe@88 361 void moonbr_io_closehandle(lua_State *L, int idx, int timeout) {
jbe@88 362 moonbr_io_handle_t *handle;
jbe@88 363 handle = luaL_checkudata(L, idx, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@88 364 if (handle->fd >= 0) {
jbe@88 365 lua_pushcfunction(L, moonbr_io_close);
jbe@88 366 lua_pushvalue(L, idx);
jbe@88 367 lua_pushinteger(L, timeout);
jbe@88 368 lua_call(L, 2, 0);
jbe@88 369 }
jbe@88 370 }
jbe@88 371
jbe@88 372 void moonbr_io_pushhandle(lua_State *L, int fd, int issocket, int canshutdown) {
jbe@79 373 moonbr_io_handle_t *handle;
jbe@79 374 handle = lua_newuserdata(L, sizeof(moonbr_io_handle_t));
jbe@79 375 handle->fd = fd;
jbe@84 376 handle->issocket = issocket;
jbe@88 377 handle->canshutdown = canshutdown;
jbe@88 378 handle->shutwr = 0;
jbe@81 379 handle->nonblocking = -1;
jbe@85 380 handle->readerr = 0;
jbe@85 381 handle->readbufcnt = 0;
jbe@81 382 handle->writeerr = 0;
jbe@81 383 handle->writeleft = 0;
jbe@83 384 handle->writeqin = 0;
jbe@83 385 handle->writeqout = 0;
jbe@81 386 handle->writeqoff = 0;
jbe@81 387 handle->writebufcnt = 0;
jbe@87 388 moonbr_io_handle_set_linger(L, handle, 0);
jbe@79 389 luaL_getmetatable(L, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 390 lua_setmetatable(L, -2);
jbe@79 391 lua_newtable(L); // uservalue
jbe@81 392 lua_newtable(L);
jbe@81 393 lua_setfield(L, -2, "writebuf");
jbe@79 394 lua_newtable(L); // public
jbe@79 395 luaL_getmetatable(L, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79 396 lua_setmetatable(L, -2);
jbe@79 397 lua_setfield(L, -2, "public");
jbe@79 398 lua_setuservalue(L, -2);
jbe@79 399 }
jbe@79 400
jbe@79 401 static int moonbr_io_handleindex(lua_State *L) {
jbe@80 402 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 403 lua_getuservalue(L, 1);
jbe@79 404 lua_getfield(L, -1, "public");
jbe@79 405 lua_pushvalue(L, 2);
jbe@79 406 lua_gettable(L, -2);
jbe@79 407 return 1;
jbe@79 408 }
jbe@79 409
jbe@79 410 static int moonbr_io_handlenewindex(lua_State *L) {
jbe@80 411 luaL_checkudata(L, 1, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 412 lua_getuservalue(L, 1);
jbe@79 413 lua_getfield(L, -1, "public");
jbe@79 414 lua_pushvalue(L, 2);
jbe@79 415 lua_pushvalue(L, 3);
jbe@79 416 lua_settable(L, -3);
jbe@79 417 return 0;
jbe@79 418 }
jbe@79 419
jbe@79 420 static const struct luaL_Reg moonbr_io_handle_methods[] = {
jbe@85 421 {"read", moonbr_io_read},
jbe@85 422 {"read_nb", moonbr_io_read_nb},
jbe@86 423 {"drain", moonbr_io_drain},
jbe@86 424 {"drain_nb", moonbr_io_drain_nb},
jbe@80 425 {"write", moonbr_io_write},
jbe@81 426 {"write_nb", moonbr_io_write_nb},
jbe@80 427 {"flush", moonbr_io_flush},
jbe@81 428 {"flush_nb", moonbr_io_flush_nb},
jbe@88 429 {"finish", moonbr_io_finish},
jbe@87 430 {"close", moonbr_io_close},
jbe@85 431 {"reset", moonbr_io_reset},
jbe@79 432 {NULL, NULL}
jbe@79 433 };
jbe@79 434
jbe@79 435 static const struct luaL_Reg moonbr_io_handle_metamethods[] = {
jbe@79 436 {"__index", moonbr_io_handleindex},
jbe@79 437 {"__newindex", moonbr_io_handlenewindex},
jbe@88 438 {"__gc", moonbr_io_gc},
jbe@79 439 {NULL, NULL}
jbe@79 440 };
jbe@79 441
jbe@79 442 static const struct luaL_Reg moonbr_io_module_funcs[] = {
jbe@79 443 {NULL, NULL}
jbe@79 444 };
jbe@79 445
jbe@79 446 int luaopen_moonbridge_io(lua_State *L) {
jbe@79 447
jbe@80 448 lua_newtable(L); // module
jbe@80 449
jbe@79 450 lua_newtable(L); // public metatable
jbe@79 451 lua_newtable(L); // handle methods
jbe@79 452 luaL_setfuncs(L, moonbr_io_handle_methods, 0);
jbe@80 453 lua_pushvalue(L, -1);
jbe@80 454 lua_setfield(L, -4, "handle");
jbe@79 455 lua_setfield(L, -2, "__index");
jbe@79 456 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_PUBLIC_MT_REGKEY);
jbe@79 457
jbe@79 458 lua_newtable(L); // handle metatable
jbe@79 459 luaL_setfuncs(L, moonbr_io_handle_metamethods, 0);
jbe@79 460 lua_setfield(L, LUA_REGISTRYINDEX, MOONBR_IO_HANDLE_MT_REGKEY);
jbe@79 461
jbe@79 462 luaL_setfuncs(L, moonbr_io_module_funcs, 0);
jbe@79 463 return 1;
jbe@79 464
jbe@79 465 }
jbe@79 466

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