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Diffstat (limited to '')
| -rw-r--r-- | mediaplugin/src/lib/Lua/ULua.pas | 1086 |
1 files changed, 1086 insertions, 0 deletions
diff --git a/mediaplugin/src/lib/Lua/ULua.pas b/mediaplugin/src/lib/Lua/ULua.pas new file mode 100644 index 00000000..1de48a3c --- /dev/null +++ b/mediaplugin/src/lib/Lua/ULua.pas @@ -0,0 +1,1086 @@ +unit ULua; + +(* + * A complete Pascal wrapper for Lua 5.1 DLL module. + * + * Created by Geo Massar, 2006 + * Distributed as free/open source. + *) + +interface + +{$IFDEF FPC} + {$MODE Delphi} +{$ENDIF} + +{$IFDEF UNIX} +uses + dl, + UConfig; +{$ENDIF} + +{$DEFINE LUA51} + +type + size_t = type Cardinal; + Psize_t = ^size_t; + PPointer = ^Pointer; + + lua_State = record end; + Plua_State = ^lua_State; + +const +{$IFDEF WIN32} + LuaDLL = 'lua5.1.dll'; +{$ENDIF} +{$IFDEF UNIX} +{$IFDEF DARWIN} + LuaDLL = 'liblua.5.1.dylib'; + {$linklib liblua.5.1} +{$ELSE} + LuaDLL = lua_lib_name; +{$ENDIF} +{$ENDIF} +{$IFDEF MACOS} + SDLgfxLibName = 'lua5.1'; +{$ENDIF} + +(* formats for Lua numbers *) +{$IFNDEF LUA_NUMBER_SCAN} +const + LUA_NUMBER_SCAN = '%lf'; +{$ENDIF} + +{$IFNDEF LUA_NUMBER_FMT} +const + LUA_NUMBER_FMT = '%.14g'; +{$ENDIF} + +(*****************************************************************************) +(* luaconfig.h *) +(*****************************************************************************) + +(* +** $Id: luaconf.h,v 1.81 2006/02/10 17:44:06 roberto Exp $ +** Configuration file for Lua +** See Copyright Notice in lua.h +*) + +(* +** {================================================================== +@@ LUA_NUMBER is the type of numbers in Lua. +** CHANGE the following definitions only if you want to build Lua +** with a number type different from double. You may also need to +** change lua_number2int & lua_number2integer. +** =================================================================== +*) +type + LUA_NUMBER_ = type Double; // ending underscore is needed in Pascal + LUA_INTEGER_ = type Integer; + +(* +@@ LUA_IDSIZE gives the maximum size for the description of the source +@* of a function in debug information. +** CHANGE it if you want a different size. +*) +const + LUA_IDSIZE = 60; + +(* +@@ LUAL_BUFFERSIZE is the buffer size used by the lauxlib buffer system. +*) +const + LUAL_BUFFERSIZE = 1024; + +(* +@@ LUA_PROMPT is the default prompt used by stand-alone Lua. +@@ LUA_PROMPT2 is the default continuation prompt used by stand-alone Lua. +** CHANGE them if you want different prompts. (You can also change the +** prompts dynamically, assigning to globals _PROMPT/_PROMPT2.) +*) +const + LUA_PROMPT = '> '; + LUA_PROMPT2 = '>> '; + +(* +@@ lua_readline defines how to show a prompt and then read a line from +@* the standard input. +@@ lua_saveline defines how to "save" a read line in a "history". +@@ lua_freeline defines how to free a line read by lua_readline. +** CHANGE them if you want to improve this functionality (e.g., by using +** GNU readline and history facilities). +*) +function lua_readline(L : Plua_State; var b : PChar; p : PChar): Boolean; +procedure lua_saveline(L : Plua_State; idx : Integer); +procedure lua_freeline(L : Plua_State; b : PChar); + +(* +@@ lua_stdin_is_tty detects whether the standard input is a 'tty' (that +@* is, whether we're running lua interactively). +** CHANGE it if you have a better definition for non-POSIX/non-Windows +** systems. +*/ +#include <io.h> +#include <stdio.h> +#define lua_stdin_is_tty() _isatty(_fileno(stdin)) +*) +const + lua_stdin_is_tty = TRUE; + +(*****************************************************************************) +(* lua.h *) +(*****************************************************************************) + +(* +** $Id: lua.h,v 1.216 2006/01/10 12:50:13 roberto Exp $ +** Lua - An Extensible Extension Language +** Lua.org, PUC-Rio, Brazil (http://www.lua.org) +** See Copyright Notice at the end of this file +*) + +const + LUA_VERSION = 'Lua 5.1'; + LUA_VERSION_NUM = 501; + LUA_COPYRIGHT = 'Copyright (C) 1994-2006 Tecgraf, PUC-Rio'; + LUA_AUTHORS = 'R. Ierusalimschy, L. H. de Figueiredo & W. Celes'; + + (* mark for precompiled code (`<esc>Lua') *) + LUA_SIGNATURE = #27'Lua'; + + (* option for multiple returns in `lua_pcall' and `lua_call' *) + LUA_MULTRET = -1; + + (* + ** pseudo-indices + *) + LUA_REGISTRYINDEX = -10000; + LUA_ENVIRONINDEX = -10001; + LUA_GLOBALSINDEX = -10002; + +function lua_upvalueindex(idx : Integer) : Integer; // a marco + +const + (* thread status; 0 is OK *) + LUA_YIELD_ = 1; // Note: the ending underscore is needed in Pascal + LUA_ERRRUN = 2; + LUA_ERRSYNTAX = 3; + LUA_ERRMEM = 4; + LUA_ERRERR = 5; + +type + lua_CFunction = function(L : Plua_State) : Integer; cdecl; + + (* + ** functions that read/write blocks when loading/dumping Lua chunks + *) + lua_Reader = function (L : Plua_State; ud : Pointer; + sz : Psize_t) : PChar; cdecl; + lua_Writer = function (L : Plua_State; const p : Pointer; sz : size_t; + ud : Pointer) : Integer; cdecl; + + (* + ** prototype for memory-allocation functions + *) + lua_Alloc = function (ud, ptr : Pointer; + osize, nsize : size_t) : Pointer; cdecl; + +const + (* + ** basic types + *) + LUA_TNONE = -1; + + LUA_TNIL = 0; + LUA_TBOOLEAN = 1; + LUA_TLIGHTUSERDATA = 2; + LUA_TNUMBER = 3; + LUA_TSTRING = 4; + LUA_TTABLE = 5; + LUA_TFUNCTION = 6; + LUA_TUSERDATA = 7; + LUA_TTHREAD = 8; + + (* minimum Lua stack available to a C function *) + LUA_MINSTACK = 20; + +type + (* type of numbers in Lua *) + lua_Number = LUA_NUMBER_; + + (* type for integer functions *) + lua_Integer = LUA_INTEGER_; + +(* +** state manipulation +*) +function lua_newstate(f : lua_Alloc; ud : Pointer) : Plua_State; + cdecl; external LuaDLL; +procedure lua_close(L: Plua_State); + cdecl; external LuaDLL; +function lua_newthread(L : Plua_State) : Plua_State; + cdecl; external LuaDLL; + +function lua_atpanic(L : Plua_State; panicf : lua_CFunction) : lua_CFunction; + cdecl; external LuaDLL; + + +(* +** basic stack manipulation +*) +function lua_gettop(L : Plua_State) : Integer; + cdecl; external LuaDLL; +procedure lua_settop(L : Plua_State; idx : Integer); + cdecl; external LuaDLL; +procedure lua_pushvalue(L : Plua_State; idx : Integer); + cdecl; external LuaDLL; +procedure lua_remove(L : Plua_State; idx : Integer); + cdecl; external LuaDLL; +procedure lua_insert(L : Plua_State; idx : Integer); + cdecl; external LuaDLL; +procedure lua_replace(L : Plua_State; idx : Integer); + cdecl; external LuaDLL; +function lua_checkstack(L : Plua_State; sz : Integer) : LongBool; + cdecl; external LuaDLL; + +procedure lua_xmove(src, dest : Plua_State; n : Integer); + cdecl; external LuaDLL; + + +(* +** access functions (stack -> C) +*) +function lua_isnumber(L : Plua_State; idx : Integer) : LongBool; + cdecl; external LuaDLL; +function lua_isstring(L : Plua_State; idx : Integer) : LongBool; + cdecl; external LuaDLL; +function lua_iscfunction(L : Plua_State; idx : Integer) : LongBool; + cdecl; external LuaDLL; +function lua_isuserdata(L : Plua_State; idx : Integer) : LongBool; + cdecl; external LuaDLL; +function lua_type(L : Plua_State; idx : Integer) : Integer; + cdecl; external LuaDLL; +function lua_typename(L : Plua_State; tp : Integer) : PChar; + cdecl; external LuaDLL; + +function lua_equal(L : Plua_State; idx1, idx2 : Integer) : LongBool; + cdecl; external LuaDLL; +function lua_rawequal(L : Plua_State; idx1, idx2 : Integer) : LongBool; + cdecl; external LuaDLL; +function lua_lessthan(L : Plua_State; idx1, idx2 : Integer) : LongBool; + cdecl; external LuaDLL; + +function lua_tonumber(L : Plua_State; idx : Integer) : lua_Number; + cdecl; external LuaDLL; +function lua_tointeger(L : Plua_State; idx : Integer) : lua_Integer; + cdecl; external LuaDLL; +function lua_toboolean(L : Plua_State; idx : Integer) : LongBool; + cdecl; external LuaDLL; +function lua_tolstring(L : Plua_State; idx : Integer; + len : Psize_t) : PChar; + cdecl; external LuaDLL; +function lua_objlen(L : Plua_State; idx : Integer) : size_t; + cdecl; external LuaDLL; +function lua_tocfunction(L : Plua_State; idx : Integer) : lua_CFunction; + cdecl; external LuaDLL; +function lua_touserdata(L : Plua_State; idx : Integer) : Pointer; + cdecl; external LuaDLL; +function lua_tothread(L : Plua_State; idx : Integer) : Plua_State; + cdecl; external LuaDLL; +function lua_topointer(L : Plua_State; idx : Integer) : Pointer; + cdecl; external LuaDLL; + + +(* +** push functions (C -> stack) +*) +procedure lua_pushnil(L : Plua_State); + cdecl; external LuaDLL; +procedure lua_pushnumber(L : Plua_State; n : lua_Number); + cdecl; external LuaDLL; +procedure lua_pushinteger(L : Plua_State; n : lua_Integer); + cdecl; external LuaDLL; +procedure lua_pushlstring(L : Plua_State; const s : PChar; ls : size_t); + cdecl; external LuaDLL; +procedure lua_pushstring(L : Plua_State; const s : PChar); + cdecl; external LuaDLL; +function lua_pushvfstring(L : Plua_State; + const fmt : PChar; argp : Pointer) : PChar; + cdecl; external LuaDLL; +function lua_pushfstring(L : Plua_State; const fmt : PChar) : PChar; varargs; + cdecl; external LuaDLL; +procedure lua_pushcclosure(L : Plua_State; fn : lua_CFunction; n : Integer); + cdecl; external LuaDLL; +procedure lua_pushboolean(L : Plua_State; b : LongBool); + cdecl; external LuaDLL; +procedure lua_pushlightuserdata(L : Plua_State; p : Pointer); + cdecl; external LuaDLL; +function lua_pushthread(L : Plua_state) : Cardinal; + cdecl; external LuaDLL; + + +(* +** get functions (Lua -> stack) +*) +procedure lua_gettable(L : Plua_State ; idx : Integer); + cdecl; external LuaDLL; +procedure lua_getfield(L : Plua_State; idx : Integer; k : PChar); + cdecl; external LuaDLL; +procedure lua_rawget(L : Plua_State; idx : Integer); + cdecl; external LuaDLL; +procedure lua_rawgeti(L : Plua_State; idx, n : Integer); + cdecl; external LuaDLL; +procedure lua_createtable(L : Plua_State; narr, nrec : Integer); + cdecl; external LuaDLL; +function lua_newuserdata(L : Plua_State; sz : size_t) : Pointer; + cdecl; external LuaDLL; +function lua_getmetatable(L : Plua_State; objindex : Integer) : LongBool; + cdecl; external LuaDLL; +procedure lua_getfenv(L : Plua_State; idx : Integer); + cdecl; external LuaDLL; + + +(* +** set functions (stack -> Lua) +*) +procedure lua_settable(L : Plua_State; idx : Integer); + cdecl; external LuaDLL; +procedure lua_setfield(L : Plua_State; idx : Integer; const k : PChar); + cdecl; external LuaDLL; +procedure lua_rawset(L : Plua_State; idx : Integer); + cdecl; external LuaDLL; +procedure lua_rawseti(L : Plua_State; idx , n: Integer); + cdecl; external LuaDLL; +function lua_setmetatable(L : Plua_State; objindex : Integer): LongBool; + cdecl; external LuaDLL; +function lua_setfenv(L : Plua_State; idx : Integer): LongBool; + cdecl; external LuaDLL; + +(* +** `load' and `call' functions (load and run Lua code) +*) +procedure lua_call(L : Plua_State; nargs, nresults : Integer); + cdecl; external LuaDLL; +function lua_pcall(L : Plua_State; + nargs, nresults, errfunc : Integer) : Integer; + cdecl; external LuaDLL; +function lua_cpcall(L : Plua_State; + func : lua_CFunction; ud : Pointer) : Integer; + cdecl; external LuaDLL; +function lua_load(L : Plua_State; reader : lua_Reader; + dt : Pointer; const chunkname : PChar) : Integer; + cdecl; external LuaDLL; + +function lua_dump(L : Plua_State; writer : lua_Writer; data: Pointer) : Integer; + cdecl; external LuaDLL; + + +(* +** coroutine functions +*) +function lua_yield(L : Plua_State; nresults : Integer) : Integer; + cdecl; external LuaDLL; +function lua_resume(L : Plua_State; narg : Integer) : Integer; + cdecl; external LuaDLL; +function lua_status(L : Plua_State) : Integer; + cdecl; external LuaDLL; + +(* +** garbage-collection functions and options +*) +const + LUA_GCSTOP = 0; + LUA_GCRESTART = 1; + LUA_GCCOLLECT = 2; + LUA_GCCOUNT = 3; + LUA_GCCOUNTB = 4; + LUA_GCSTEP = 5; + LUA_GCSETPAUSE = 6; + LUA_GCSETSTEPMUL = 7; + +function lua_gc(L : Plua_State; what, data : Integer) : Integer; + cdecl; external LuaDLL; + +(* +** miscellaneous functions +*) +function lua_error(L : Plua_State) : Integer; + cdecl; external LuaDLL; + +function lua_next(L : Plua_State; idx : Integer) : Integer; + cdecl; external LuaDLL; + +procedure lua_concat(L : Plua_State; n : Integer); + cdecl; external LuaDLL; + +function lua_getallocf(L : Plua_State; ud : PPointer) : lua_Alloc; + cdecl; external LuaDLL; +procedure lua_setallocf(L : Plua_State; f : lua_Alloc; ud : Pointer); + cdecl; external LuaDLL; + +(* +** =============================================================== +** some useful macros +** =============================================================== +*) +procedure lua_pop(L : Plua_State; n : Integer); + +procedure lua_newtable(L : Plua_State); + +procedure lua_register(L : Plua_State; n : PChar; f : lua_CFunction); + +procedure lua_pushcfunction(L : Plua_State; f : lua_CFunction); + +function lua_strlen(L : Plua_State; idx : Integer) : Integer; + +function lua_isfunction(L : Plua_State; n : Integer) : Boolean; +function lua_istable(L : Plua_State; n : Integer) : Boolean; +function lua_islightuserdata(L : Plua_State; n : Integer) : Boolean; +function lua_isnil(L : Plua_State; n : Integer) : Boolean; +function lua_isboolean(L : Plua_State; n : Integer) : Boolean; +function lua_isthread(L : Plua_State; n : Integer) : Boolean; +function lua_isnone(L : Plua_State; n : Integer) : Boolean; +function lua_isnoneornil(L : Plua_State; n : Integer) : Boolean; + +procedure lua_pushliteral(L : Plua_State; s : PChar); + +procedure lua_setglobal(L : Plua_State; s : PChar); +procedure lua_getglobal(L : Plua_State; s : PChar); + +function lua_tostring(L : Plua_State; idx : Integer) : PChar; + + +(* +** compatibility macros and functions +*) +function lua_open : Plua_State; + +procedure lua_getregistry(L : Plua_State); + +function lua_getgccount(L : Plua_State) : Integer; + +type + lua_Chuckreader = type lua_Reader; + lua_Chuckwriter = type lua_Writer; + +(* ====================================================================== *) + +(* +** {====================================================================== +** Debug API +** ======================================================================= +*) + +(* +** Event codes +*) +const + LUA_HOOKCALL = 0; + LUA_HOOKRET = 1; + LUA_HOOKLINE = 2; + LUA_HOOKCOUNT = 3; + LUA_HOOKTAILRET = 4; + + +(* +** Event masks +*) + LUA_MASKCALL = 1 shl LUA_HOOKCALL; + LUA_MASKRET = 1 shl LUA_HOOKRET; + LUA_MASKLINE = 1 shl LUA_HOOKLINE; + LUA_MASKCOUNT = 1 shl LUA_HOOKCOUNT; + +type + lua_Debug = packed record + event : Integer; + name : PChar; (* (n) *) + namewhat : PChar; (* (n) `global', `local', `field', `method' *) + what : PChar; (* (S) `Lua', `C', `main', `tail' *) + source : PChar; (* (S) *) + currentline : Integer; (* (l) *) + nups : Integer; (* (u) number of upvalues *) + linedefined : Integer; (* (S) *) + short_src : array [0..LUA_IDSIZE-1] of Char; (* (S) *) + (* private part *) + i_ci : Integer; (* active function *) + end; + Plua_Debug = ^lua_Debug; + + (* Functions to be called by the debuger in specific events *) + lua_Hook = procedure (L : Plua_State; ar : Plua_Debug); cdecl; + + +function lua_getstack(L : Plua_State; level : Integer; + ar : Plua_Debug) : Integer; + cdecl; external LuaDLL; +function lua_getinfo(L : Plua_State; const what : PChar; + ar: Plua_Debug): Integer; + cdecl; external LuaDLL; +function lua_getlocal(L : Plua_State; + ar : Plua_Debug; n : Integer) : PChar; + cdecl; external LuaDLL; +function lua_setlocal(L : Plua_State; + ar : Plua_Debug; n : Integer) : PChar; + cdecl; external LuaDLL; +function lua_getupvalue(L : Plua_State; funcindex, n : Integer) : PChar; + cdecl; external LuaDLL; +function lua_setupvalue(L : Plua_State; funcindex, n : Integer) : PChar; + cdecl; external LuaDLL; + +function lua_sethook(L : Plua_State; func : lua_Hook; + mask, count: Integer): Integer; + cdecl; external LuaDLL; +{ +function lua_gethook(L : Plua_State) : lua_Hook; + cdecl; external LuaDLL; +} +function lua_gethookmask(L : Plua_State) : Integer; + cdecl; external LuaDLL; +function lua_gethookcount(L : Plua_State) : Integer; + cdecl; external LuaDLL; + + +(*****************************************************************************) +(* lualib.h *) +(*****************************************************************************) + +(* +** $Id: lualib.h,v 1.36 2005/12/27 17:12:00 roberto Exp $ +** Lua standard libraries +** See Copyright Notice at the end of this file +*) + +const + (* Key to file-handle type *) + LUA_FILEHANDLE = 'FILE*'; + + LUA_COLIBNAME = 'coroutine'; + LUA_TABLIBNAME = 'table'; + LUA_IOLIBNAME = 'io'; + LUA_OSLIBNAME = 'os'; + LUA_STRLIBNAME = 'string'; + LUA_MATHLIBNAME = 'math'; + LUA_DBLIBNAME = 'debug'; + LUA_LOADLIBNAME = 'package'; + +function luaopen_base(L : Plua_State) : Integer; + cdecl; external LuaDLL; + +function luaopen_table(L : Plua_State) : Integer; + cdecl; external LuaDLL; + +function luaopen_io(L : Plua_State) : Integer; + cdecl; external LuaDLL; + +function luaopen_os(L : Plua_State) : Integer; + cdecl; external LuaDLL; + +function luaopen_string(L : Plua_State) : Integer; + cdecl; external LuaDLL; + +function luaopen_math(L : Plua_State) : Integer; + cdecl; external LuaDLL; + +function luaopen_debug(L : Plua_State) : Integer; + cdecl; external LuaDLL; + +function luaopen_package(L : Plua_State) : Integer; + cdecl; external LuaDLL; + +procedure luaL_openlibs(L : Plua_State); + cdecl; external LuaDLL; + +procedure lua_assert(x : Boolean); // a macro + + +(*****************************************************************************) +(* lauxlib.h *) +(*****************************************************************************) + +(* +** $Id: lauxlib.h,v 1.87 2005/12/29 15:32:11 roberto Exp $ +** Auxiliary functions for building Lua libraries +** See Copyright Notice at the end of this file. +*) + +// not compatibility with the behavior of setn/getn in Lua 5.0 +function luaL_getn(L : Plua_State; idx : Integer) : Integer; +procedure luaL_setn(L : Plua_State; i, j : Integer); + +const + LUA_ERRFILE = LUA_ERRERR + 1; + +type + luaL_Reg = packed record + name : PChar; + func : lua_CFunction; + end; + PluaL_Reg = ^luaL_Reg; + + +procedure luaL_openlib(L : Plua_State; const libname : PChar; + const lr : PluaL_Reg; nup : Integer); + cdecl; external LuaDLL; +procedure luaL_register(L : Plua_State; const libname : PChar; + const lr : PluaL_Reg); + cdecl; external LuaDLL; +function luaL_getmetafield(L : Plua_State; obj : Integer; + const e : PChar) : Integer; + cdecl; external LuaDLL; +function luaL_callmeta(L : Plua_State; obj : Integer; + const e : PChar) : Integer; + cdecl; external LuaDLL; +function luaL_typerror(L : Plua_State; narg : Integer; + const tname : PChar) : Integer; + cdecl; external LuaDLL; +function luaL_argerror(L : Plua_State; numarg : Integer; + const extramsg : PChar) : Integer; + cdecl; external LuaDLL; +function luaL_checklstring(L : Plua_State; numArg : Integer; + ls : Psize_t) : PChar; + cdecl; external LuaDLL; +function luaL_optlstring(L : Plua_State; numArg : Integer; + const def: PChar; ls: Psize_t) : PChar; + cdecl; external LuaDLL; +function luaL_checknumber(L : Plua_State; numArg : Integer) : lua_Number; + cdecl; external LuaDLL; +function luaL_optnumber(L : Plua_State; nArg : Integer; + def : lua_Number) : lua_Number; + cdecl; external LuaDLL; + +function luaL_checkinteger(L : Plua_State; numArg : Integer) : lua_Integer; + cdecl; external LuaDLL; +function luaL_optinteger(L : Plua_State; nArg : Integer; + def : lua_Integer) : lua_Integer; + cdecl; external LuaDLL; + +procedure luaL_checkstack(L : Plua_State; sz : Integer; const msg : PChar); + cdecl; external LuaDLL; +procedure luaL_checktype(L : Plua_State; narg, t : Integer); + cdecl; external LuaDLL; +procedure luaL_checkany(L : Plua_State; narg : Integer); + cdecl; external LuaDLL; + +function luaL_newmetatable(L : Plua_State; const tname : PChar) : Integer; + cdecl; external LuaDLL; +function luaL_checkudata(L : Plua_State; ud : Integer; + const tname : PChar) : Pointer; + cdecl; external LuaDLL; + +procedure luaL_where(L : Plua_State; lvl : Integer); + cdecl; external LuaDLL; +function luaL_error(L : Plua_State; const fmt : PChar) : Integer; varargs; + cdecl; external LuaDLL; + +function luaL_checkoption(L : Plua_State; narg : Integer; const def : PChar; + const lst : array of PChar) : Integer; + cdecl; external LuaDLL; + +function luaL_ref(L : Plua_State; t : Integer) : Integer; + cdecl; external LuaDLL; +procedure luaL_unref(L : Plua_State; t, ref : Integer); + cdecl; external LuaDLL; + +function luaL_loadfile(L : Plua_State; const filename : PChar) : Integer; + cdecl; external LuaDLL; +function luaL_loadbuffer(L : Plua_State; const buff : PChar; + sz : size_t; const name: PChar) : Integer; + cdecl; external LuaDLL; + +function luaL_loadstring(L : Plua_State; const s : Pchar) : Integer; + cdecl; external LuaDLL; + +function luaL_newstate : Plua_State; + cdecl; external LuaDLL; + +function luaL_gsub(L : Plua_State; const s, p, r : PChar) : PChar; + cdecl; external LuaDLL; + +function luaL_findtable(L : Plua_State; idx : Integer; + const fname : PChar; szhint : Integer) : PChar; + cdecl; external LuaDLL; + + +(* +** =============================================================== +** some useful macros +** =============================================================== +*) + +function luaL_argcheck(L : Plua_State; cond : Boolean; numarg : Integer; + extramsg : PChar): Integer; +function luaL_checkstring(L : Plua_State; n : Integer) : PChar; +function luaL_optstring(L : Plua_State; n : Integer; d : PChar) : PChar; +function luaL_checkint(L : Plua_State; n : Integer) : Integer; +function luaL_optint(L : Plua_State; n, d : Integer): Integer; +function luaL_checklong(L : Plua_State; n : LongInt) : LongInt; +function luaL_optlong(L : Plua_State; n : Integer; d : LongInt) : LongInt; + +function luaL_typename(L : Plua_State; idx : Integer) : PChar; + +function luaL_dofile(L : Plua_State; fn : PChar) : Integer; + +function luaL_dostring(L : Plua_State; s : PChar) : Integer; + +procedure luaL_getmetatable(L : Plua_State; n : PChar); + +(* not implemented yet +#define luaL_opt(L,f,n,d) (lua_isnoneornil(L,(n)) ? (d) : f(L,(n))) +*) + +(* +** {====================================================== +** Generic Buffer manipulation +** ======================================================= +*) + +type + luaL_Buffer = packed record + p : PChar; (* current position in buffer *) + lvl : Integer; (* number of strings in the stack (level) *) + L : Plua_State; + buffer : array [0..LUAL_BUFFERSIZE-1] of Char; + end; + PluaL_Buffer = ^luaL_Buffer; + +procedure luaL_addchar(B : PluaL_Buffer; c : Char); + +(* compatibility only *) +procedure luaL_putchar(B : PluaL_Buffer; c : Char); + +procedure luaL_addsize(B : PluaL_Buffer; n : Integer); + +procedure luaL_buffinit(L : Plua_State; B : PluaL_Buffer); + cdecl; external LuaDLL; +function luaL_prepbuffer(B : PluaL_Buffer) : PChar; + cdecl; external LuaDLL; +procedure luaL_addlstring(B : PluaL_Buffer; const s : PChar; ls : size_t); + cdecl; external LuaDLL; +procedure luaL_addstring(B : PluaL_Buffer; const s : PChar); + cdecl; external LuaDLL; +procedure luaL_addvalue(B : PluaL_Buffer); + cdecl; external LuaDLL; +procedure luaL_pushresult(B : PluaL_Buffer); + cdecl; external LuaDLL; + +(* ====================================================== *) + + +(* compatibility with ref system *) + +(* pre-defined references *) +const + LUA_NOREF = -2; + LUA_REFNIL = -1; + +function lua_ref(L : Plua_State; lock : Boolean) : Integer; + +procedure lua_unref(L : Plua_State; ref : Integer); + +procedure lua_getref(L : Plua_State; ref : Integer); + + +(******************************************************************************) +(******************************************************************************) +(******************************************************************************) + +implementation + +uses + SysUtils; + +(*****************************************************************************) +(* luaconfig.h *) +(*****************************************************************************) + +function lua_readline(L : Plua_State; var b : PChar; p : PChar): Boolean; +var + s : AnsiString; +begin + Write(p); // show prompt + ReadLn(s); // get line + b := PChar(s); // and return it + lua_readline := (b[0] <> #4); // test for ctrl-D +end; + +procedure lua_saveline(L : Plua_State; idx : Integer); +begin +end; + +procedure lua_freeline(L : Plua_State; b : PChar); +begin +end; + + +(*****************************************************************************) +(* lua.h *) +(*****************************************************************************) + +function lua_upvalueindex(idx : Integer) : Integer; +begin + lua_upvalueindex := LUA_GLOBALSINDEX - idx; +end; + +procedure lua_pop(L : Plua_State; n : Integer); +begin + lua_settop(L, -n - 1); +end; + +procedure lua_newtable(L : Plua_State); +begin + lua_createtable(L, 0, 0); +end; + +procedure lua_register(L : Plua_State; n : PChar; f : lua_CFunction); +begin + lua_pushcfunction(L, f); + lua_setglobal(L, n); +end; + +procedure lua_pushcfunction(L : Plua_State; f : lua_CFunction); +begin + lua_pushcclosure(L, f, 0); +end; + +function lua_strlen(L : Plua_State; idx : Integer) : Integer; +begin + lua_strlen := lua_objlen(L, idx); +end; + +function lua_isfunction(L : Plua_State; n : Integer) : Boolean; +begin + lua_isfunction := lua_type(L, n) = LUA_TFUNCTION; +end; + +function lua_istable(L : Plua_State; n : Integer) : Boolean; +begin + lua_istable := lua_type(L, n) = LUA_TTABLE; +end; + +function lua_islightuserdata(L : Plua_State; n : Integer) : Boolean; +begin + lua_islightuserdata := lua_type(L, n) = LUA_TLIGHTUSERDATA; +end; + +function lua_isnil(L : Plua_State; n : Integer) : Boolean; +begin + lua_isnil := lua_type(L, n) = LUA_TNIL; +end; + +function lua_isboolean(L : Plua_State; n : Integer) : Boolean; +begin + lua_isboolean := lua_type(L, n) = LUA_TBOOLEAN; +end; + +function lua_isthread(L : Plua_State; n : Integer) : Boolean; +begin + lua_isthread := lua_type(L, n) = LUA_TTHREAD; +end; + +function lua_isnone(L : Plua_State; n : Integer) : Boolean; +begin + lua_isnone := lua_type(L, n) = LUA_TNONE; +end; + +function lua_isnoneornil(L : Plua_State; n : Integer) : Boolean; +begin + lua_isnoneornil := lua_type(L, n) <= 0; +end; + +procedure lua_pushliteral(L : Plua_State; s : PChar); +begin + lua_pushlstring(L, s, StrLen(s)); +end; + +procedure lua_setglobal(L : Plua_State; s : PChar); +begin + lua_setfield(L, LUA_GLOBALSINDEX, s); +end; + +procedure lua_getglobal(L: Plua_State; s: PChar); +begin + lua_getfield(L, LUA_GLOBALSINDEX, s); +end; + +function lua_tostring(L : Plua_State; idx : Integer) : PChar; +begin + lua_tostring := lua_tolstring(L, idx, nil); +end; + +function lua_open : Plua_State; +begin + lua_open := luaL_newstate; +end; + +procedure lua_getregistry(L : Plua_State); +begin + lua_pushvalue(L, LUA_REGISTRYINDEX); +end; + +function lua_getgccount(L : Plua_State) : Integer; +begin + lua_getgccount := lua_gc(L, LUA_GCCOUNT, 0); +end; + + +(*****************************************************************************) +(* lualib.h *) +(*****************************************************************************) + +procedure lua_assert(x : Boolean); +begin +end; + + +(*****************************************************************************) +(* lauxlib.h n *) +(*****************************************************************************) + +function luaL_getn(L : Plua_State; idx : Integer) : Integer; +begin + luaL_getn := lua_objlen(L, idx); +end; + +procedure luaL_setn(L : plua_State; i, j : Integer); +begin + (* no op *) +end; + +function luaL_argcheck(L : Plua_State; cond : Boolean; numarg : Integer; + extramsg : PChar): Integer; +begin + if not cond then + luaL_argcheck := luaL_argerror(L, numarg, extramsg) + else + luaL_argcheck := 0; +end; + +function luaL_checkstring(L : Plua_State; n : Integer) : PChar; +begin + luaL_checkstring := luaL_checklstring(L, n, nil); +end; + +function luaL_optstring(L : Plua_State; n : Integer; d : PChar) : PChar; +begin + luaL_optstring := luaL_optlstring(L, n, d, nil); +end; + +function luaL_checkint(L : Plua_State; n : Integer) : Integer; +begin + luaL_checkint := luaL_checkinteger(L, n); +end; + +function luaL_optint(L : Plua_State; n, d : Integer): Integer; +begin + luaL_optint := luaL_optinteger(L, n, d); +end; + +function luaL_checklong(L : Plua_State; n : LongInt) : LongInt; +begin + luaL_checklong := luaL_checkinteger(L, n); +end; + +function luaL_optlong(L : Plua_State; n : Integer; d : LongInt) : LongInt; +begin + luaL_optlong := luaL_optinteger(L, n, d); +end; + +function luaL_typename(L : Plua_State; idx : Integer) : PChar; +begin + luaL_typename := lua_typename( L, lua_type(L, idx) ); +end; + +function luaL_dofile(L : Plua_State; fn : PChar) : Integer; +Var + Res : Integer; +begin + // WC 2007\03\22 - Updated for Delphi + Res := luaL_loadfile(L, fn); + if Res = 0 then + Res := lua_pcall(L, 0, LUA_MULTRET, 0); + Result := Res; +end; + +function luaL_dostring(L : Plua_State; s : PChar) : Integer; +Var + Res : Integer; +begin + // WC 2007\03\22 - Updated for Delphi + Res := luaL_loadstring(L, s); + if Res = 0 then + Res := lua_pcall(L, 0, LUA_MULTRET, 0); + Result := Res; +end; + +procedure luaL_getmetatable(L : Plua_State; n : PChar); +begin + lua_getfield(L, LUA_REGISTRYINDEX, n); +end; + +procedure luaL_addchar(B : PluaL_Buffer; c : Char); +begin + if not(B^.p < B^.buffer + LUAL_BUFFERSIZE) then + luaL_prepbuffer(B); + B^.p^ := c; + Inc(B^.p); +end; + +procedure luaL_putchar(B : PluaL_Buffer; c : Char); +begin + luaL_addchar(B, c); +end; + +procedure luaL_addsize(B : PluaL_Buffer; n : Integer); +begin + Inc(B^.p, n); +end; + +function lua_ref(L : Plua_State; lock : Boolean) : Integer; +begin + if lock then + lua_ref := luaL_ref(L, LUA_REGISTRYINDEX) + else begin + lua_pushstring(L, 'unlocked references are obsolete'); + lua_error(L); + lua_ref := 0; + end; +end; + +procedure lua_unref(L : Plua_State; ref : Integer); +begin + luaL_unref(L, LUA_REGISTRYINDEX, ref); +end; + +procedure lua_getref(L : Plua_State; ref : Integer); +begin + lua_rawgeti(L, LUA_REGISTRYINDEX, ref); +end; + + +(****************************************************************************** +* Original copyright for the lua source and headers: +* 1994-2004 Tecgraf, PUC-Rio. +* www.lua.org. +* +* +* Permission is hereby granted, free of charge, to any person obtaining +* a copy of this software and associated documentation files (the +* "Software"), to deal in the Software without restriction, including +* without limitation the rights to use, copy, modify, merge, publish, +* distribute, sublicense, and/or sell copies of the Software, and to +* permit persons to whom the Software is furnished to do so, subject to +* the following conditions: +* +* The above copyright notice and this permission notice shall be +* included in all copies or substantial portions of the Software. +* +* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, +* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. +* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY +* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, +* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE +* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. +******************************************************************************) + +end. + |