/usr/include/lua5.1/lauxlib.h is in liblua5.1-0-dev 5.1.5-8ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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** $Id: lauxlib.h,v 1.88.1.1 2007/12/27 13:02:25 roberto Exp $
** Auxiliary functions for building Lua libraries
** See Copyright Notice in lua.h
*/
#ifndef lauxlib_h
#define lauxlib_h
#include <stddef.h>
#include <stdio.h>
#include "lua.h"
#if defined(LUA_COMPAT_GETN)
LUALIB_API int (luaL_getn) (lua_State *L, int t);
LUALIB_API void (luaL_setn) (lua_State *L, int t, int n);
#else
#define luaL_getn(L,i) ((int)lua_objlen(L, i))
#define luaL_setn(L,i,j) ((void)0) /* no op! */
#endif
#if defined(LUA_COMPAT_OPENLIB)
#define luaI_openlib luaL_openlib
#endif
/* extra error code for `luaL_load' */
#define LUA_ERRFILE (LUA_ERRERR+1)
typedef struct luaL_Reg {
const char *name;
lua_CFunction func;
} luaL_Reg;
LUALIB_API void (luaI_openlib) (lua_State *L, const char *libname,
const luaL_Reg *l, int nup);
LUALIB_API void (luaL_register) (lua_State *L, const char *libname,
const luaL_Reg *l);
LUALIB_API int (luaL_getmetafield) (lua_State *L, int obj, const char *e);
LUALIB_API int (luaL_callmeta) (lua_State *L, int obj, const char *e);
LUALIB_API int (luaL_typerror) (lua_State *L, int narg, const char *tname);
LUALIB_API int (luaL_argerror) (lua_State *L, int numarg, const char *extramsg);
LUALIB_API const char *(luaL_checklstring) (lua_State *L, int numArg,
size_t *l);
LUALIB_API const char *(luaL_optlstring) (lua_State *L, int numArg,
const char *def, size_t *l);
LUALIB_API lua_Number (luaL_checknumber) (lua_State *L, int numArg);
LUALIB_API lua_Number (luaL_optnumber) (lua_State *L, int nArg, lua_Number def);
LUALIB_API lua_Integer (luaL_checkinteger) (lua_State *L, int numArg);
LUALIB_API lua_Integer (luaL_optinteger) (lua_State *L, int nArg,
lua_Integer def);
LUALIB_API void (luaL_checkstack) (lua_State *L, int sz, const char *msg);
LUALIB_API void (luaL_checktype) (lua_State *L, int narg, int t);
LUALIB_API void (luaL_checkany) (lua_State *L, int narg);
LUALIB_API int (luaL_newmetatable) (lua_State *L, const char *tname);
LUALIB_API void *(luaL_checkudata) (lua_State *L, int ud, const char *tname);
LUALIB_API void (luaL_where) (lua_State *L, int lvl);
LUALIB_API int (luaL_error) (lua_State *L, const char *fmt, ...);
LUALIB_API int (luaL_checkoption) (lua_State *L, int narg, const char *def,
const char *const lst[]);
LUALIB_API int (luaL_ref) (lua_State *L, int t);
LUALIB_API void (luaL_unref) (lua_State *L, int t, int ref);
LUALIB_API int (luaL_loadfile) (lua_State *L, const char *filename);
LUALIB_API int (luaL_loadbuffer) (lua_State *L, const char *buff, size_t sz,
const char *name);
LUALIB_API int (luaL_loadstring) (lua_State *L, const char *s);
LUALIB_API lua_State *(luaL_newstate) (void);
LUALIB_API const char *(luaL_gsub) (lua_State *L, const char *s, const char *p,
const char *r);
LUALIB_API const char *(luaL_findtable) (lua_State *L, int idx,
const char *fname, int szhint);
/*
** ===============================================================
** some useful macros
** ===============================================================
*/
#define luaL_argcheck(L, cond,numarg,extramsg) \
((void)((cond) || luaL_argerror(L, (numarg), (extramsg))))
#define luaL_checkstring(L,n) (luaL_checklstring(L, (n), NULL))
#define luaL_optstring(L,n,d) (luaL_optlstring(L, (n), (d), NULL))
#define luaL_checkint(L,n) ((int)luaL_checkinteger(L, (n)))
#define luaL_optint(L,n,d) ((int)luaL_optinteger(L, (n), (d)))
#define luaL_checklong(L,n) ((long)luaL_checkinteger(L, (n)))
#define luaL_optlong(L,n,d) ((long)luaL_optinteger(L, (n), (d)))
#define luaL_typename(L,i) lua_typename(L, lua_type(L,(i)))
#define luaL_dofile(L, fn) \
(luaL_loadfile(L, fn) || lua_pcall(L, 0, LUA_MULTRET, 0))
#define luaL_dostring(L, s) \
(luaL_loadstring(L, s) || lua_pcall(L, 0, LUA_MULTRET, 0))
#define luaL_getmetatable(L,n) (lua_getfield(L, LUA_REGISTRYINDEX, (n)))
#define luaL_opt(L,f,n,d) (lua_isnoneornil(L,(n)) ? (d) : f(L,(n)))
/*
** {======================================================
** Generic Buffer manipulation
** =======================================================
*/
typedef struct luaL_Buffer {
char *p; /* current position in buffer */
int lvl; /* number of strings in the stack (level) */
lua_State *L;
char buffer[LUAL_BUFFERSIZE];
} luaL_Buffer;
#define luaL_addchar(B,c) \
((void)((B)->p < ((B)->buffer+LUAL_BUFFERSIZE) || luaL_prepbuffer(B)), \
(*(B)->p++ = (char)(c)))
/* compatibility only */
#define luaL_putchar(B,c) luaL_addchar(B,c)
#define luaL_addsize(B,n) ((B)->p += (n))
LUALIB_API void (luaL_buffinit) (lua_State *L, luaL_Buffer *B);
LUALIB_API char *(luaL_prepbuffer) (luaL_Buffer *B);
LUALIB_API void (luaL_addlstring) (luaL_Buffer *B, const char *s, size_t l);
LUALIB_API void (luaL_addstring) (luaL_Buffer *B, const char *s);
LUALIB_API void (luaL_addvalue) (luaL_Buffer *B);
LUALIB_API void (luaL_pushresult) (luaL_Buffer *B);
/* }====================================================== */
/* compatibility with ref system */
/* pre-defined references */
#define LUA_NOREF (-2)
#define LUA_REFNIL (-1)
#define lua_ref(L,lock) ((lock) ? luaL_ref(L, LUA_REGISTRYINDEX) : \
(lua_pushstring(L, "unlocked references are obsolete"), lua_error(L), 0))
#define lua_unref(L,ref) luaL_unref(L, LUA_REGISTRYINDEX, (ref))
#define lua_getref(L,ref) lua_rawgeti(L, LUA_REGISTRYINDEX, (ref))
#define luaL_reg luaL_Reg
#endif
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