diff options
Diffstat (limited to 'lprefix.h')
| -rw-r--r-- | lprefix.h | 175 |
1 files changed, 175 insertions, 0 deletions
diff --git a/lprefix.h b/lprefix.h new file mode 100644 index 0000000..0eb149f --- /dev/null +++ b/lprefix.h @@ -0,0 +1,175 @@ +/* +** $Id: lprefix.h,v 1.2 2014/12/29 16:54:13 roberto Exp $ +** Definitions for Lua code that must come before any other header file +** See Copyright Notice in lua.h +*/ + +#ifndef lprefix_h +#define lprefix_h + + +/* +** Allows POSIX/XSI stuff +*/ +#if !defined(LUA_USE_C89) /* { */ + +#if !defined(_XOPEN_SOURCE) +#define _XOPEN_SOURCE 600 +#elif _XOPEN_SOURCE == 0 +#undef _XOPEN_SOURCE /* use -D_XOPEN_SOURCE=0 to undefine it */ +#endif + +/* +** Allows manipulation of large files in gcc and some other compilers +*/ +#if !defined(LUA_32BITS) && !defined(_FILE_OFFSET_BITS) +#define _LARGEFILE_SOURCE 1 +#define _FILE_OFFSET_BITS 64 +#endif + +#endif /* } */ + + +/* +** Windows stuff +*/ +#if defined(_WIN32) /* { */ + +#if !defined(_CRT_SECURE_NO_WARNINGS) +#define _CRT_SECURE_NO_WARNINGS /* avoid warnings about ISO C functions */ +#endif + +#endif /* } */ + + +/* COMPAT53 adaptation */ +#include "c-api/compat-5.3.h" + +#undef LUAMOD_API +#define LUAMOD_API extern + + +#ifdef lutf8lib_c +# define luaopen_utf8 luaopen_compat53_utf8 +/* we don't support the %U format string of lua_pushfstring! + * code below adapted from the Lua 5.3 sources: + */ +static const char *compat53_utf8_escape (lua_State* L, long x) { + if (x < 0x80) { /* ASCII */ + char c = (char)x; + lua_pushlstring(L, &c, 1); + } else { + char buff[8] = { 0 }; + unsigned int mfb = 0x3f; + int n = 1; + do { + buff[8 - (n++)] = (char)(0x80|(x & 0x3f)); + x >>= 6; + mfb >>= 1; + } while (x > mfb); + buff[8-n] = (char)((~mfb << 1) | x); + lua_pushlstring(L, buff+8-n, n); + } + return lua_tostring(L, -1); +} +# define lua_pushfstring(L, fmt, l) \ + compat53_utf8_escape(L, l) +#endif + + +#ifdef ltablib_c +# define luaopen_table luaopen_compat53_table +# ifndef LUA_MAXINTEGER +/* conservative estimate: */ +# define LUA_MAXINTEGER INT_MAX +# endif +#endif /* ltablib_c */ + + +#ifdef lstrlib_c +#include <locale.h> +#include <lualib.h> +/* move the string library open function out of the way (we only take + * the string packing functions)! + */ +# define luaopen_string luaopen_string_XXX +/* used in string.format implementation, which we don't use: */ +# ifndef LUA_INTEGER_FRMLEN +# define LUA_INTEGER_FRMLEN "" +# define LUA_NUMBER_FRMLEN "" +# endif +# ifndef LUA_MININTEGER +# define LUA_MININTEGER 0 +# endif +# ifndef LUA_INTEGER_FMT +# define LUA_INTEGER_FMT "%d" +# endif +# ifndef LUAI_UACINT +# define LUAI_UACINT lua_Integer +# endif +/* different Lua 5.3 versions have conflicting variants of this macro + * in luaconf.h, there's a fallback implementation in lstrlib.c, and + * the macro isn't used for string (un)packing anyway! + * */ +# undef lua_number2strx +# if LUA_VERSION_NUM < 503 +/* lstrlib assumes that lua_Integer and lua_Unsigned have the same + * size, so we use the unsigned equivalent of ptrdiff_t! */ +# define lua_Unsigned size_t +# endif +# ifndef l_mathlim +# ifdef LUA_NUMBER_DOUBLE +# define l_mathlim(n) (DBL_##n) +# else +# define l_mathlim(n) (FLT_##n) +# endif +# endif +# ifndef l_mathop +# ifdef LUA_NUMBER_DOUBLE +# define l_mathop(op) op +# else +# define l_mathop(op) op##f +# endif +# endif +# ifndef lua_getlocaledecpoint +# define lua_getlocaledecpoint() (localeconv()->decimal_point[0]) +# endif +# ifndef l_sprintf +# if defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L +# define l_sprintf(s,sz,f,i) (snprintf(s, sz, f, i)) +# else +# define l_sprintf(s,sz,f,i) ((void)(sz), sprintf(s, f, i)) +# endif +# endif + +static int str_pack (lua_State *L); +static int str_packsize (lua_State *L); +static int str_unpack (lua_State *L); +LUAMOD_API int luaopen_compat53_string (lua_State *L) { + luaL_Reg const funcs[] = { + { "pack", str_pack }, + { "packsize", str_packsize }, + { "unpack", str_unpack }, + { NULL, NULL } + }; + luaL_newlib(L, funcs); + return 1; +} +/* fake CLANG feature detection on other compilers */ +# ifndef __has_attribute +# define __has_attribute(x) 0 +# endif +/* make luaopen_string(_XXX) static, so it (and all other referenced + * string functions) won't be included in the resulting dll + * (hopefully). + */ +# undef LUAMOD_API +# if defined(__GNUC__) || __has_attribute(__unused__) +# define LUAMOD_API __attribute__((__unused__)) static +# else +# define LUAMOD_API static +# endif +#endif /* lstrlib.c */ + +#endif + |