util-src/table.c
author Matthew Wild <mwild1@gmail.com>
Wed, 27 Jul 2016 13:39:19 +0100
changeset 7522 d278a770eddc
parent 6618 8e4572a642cb
child 7541 a3a4ed0d34f4
permissions -rw-r--r--
util.table: Add pack() function (this is already available in Lua 5.2+)
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#include <lua.h>
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#include <lauxlib.h>
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static int Lcreate_table(lua_State* L) {
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	lua_createtable(L, luaL_checkinteger(L, 1), luaL_checkinteger(L, 2));
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	return 1;
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}
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static int Lpack(lua_State* L) {
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	unsigned int n_args = lua_gettop(L);
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	lua_createtable(L, n_args, 1);
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	lua_insert(L, 1);
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	for(int arg = n_args; arg >= 1; arg--) {
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		lua_rawseti(L, 1, arg);
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	}
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	lua_pushinteger(L, n_args);
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	lua_setfield(L, -2, "n");
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	return 1;
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}
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int luaopen_util_table(lua_State* L) {
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	lua_newtable(L);
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	lua_pushcfunction(L, Lcreate_table);
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	lua_setfield(L, -2, "create");
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	lua_pushcfunction(L, Lpack);
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	lua_setfield(L, -2, "pack");
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	return 1;
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}