1 files changed, 585 insertions, 0 deletions

diff --git a/libraries/luajit-2.0/src/lib_package.c b/libraries/luajit-2.0/src/lib_package.c
new file mode 100644
index 0000000..a13c45b
--- /dev/null
+++ b/libraries/luajit-2.0/src/lib_package.c
@@ -0,0 +1,585 @@
+/*
+** Package library.
+** Copyright (C) 2005-2011 Mike Pall. See Copyright Notice in luajit.h
+**
+** Major portions taken verbatim or adapted from the Lua interpreter.
+** Copyright (C) 1994-2011 Lua.org, PUC-Rio. See Copyright Notice in lua.h
+*/
+
+#define lib_package_c
+#define LUA_LIB
+
+#include "lua.h"
+#include "lauxlib.h"
+#include "lualib.h"
+
+#include "lj_obj.h"
+#include "lj_err.h"
+#include "lj_lib.h"
+
+/* ------------------------------------------------------------------------ */
+
+/* Error codes for ll_loadfunc. */
+#define PACKAGE_ERR_LIB         1
+#define PACKAGE_ERR_FUNC        2
+#define PACKAGE_ERR_LOAD        3
+
+/* Redefined in platform specific part. */
+#define PACKAGE_LIB_FAIL        "open"
+#define setprogdir(L)           ((void)0)
+
+/* Symbol name prefixes. */
+#define SYMPREFIX_CF            "luaopen_%s"
+#define SYMPREFIX_BC            "luaJIT_BC_%s"
+
+#if LJ_TARGET_DLOPEN
+
+#include <dlfcn.h>
+
+static void ll_unloadlib(void *lib)
+{
+  dlclose(lib);
+}
+
+static void *ll_load(lua_State *L, const char *path)
+{
+  void *lib = dlopen(path, RTLD_NOW);
+  if (lib == NULL) lua_pushstring(L, dlerror());
+  return lib;
+}
+
+static lua_CFunction ll_sym(lua_State *L, void *lib, const char *sym)
+{
+  lua_CFunction f = (lua_CFunction)dlsym(lib, sym);
+  if (f == NULL) lua_pushstring(L, dlerror());
+  return f;
+}
+
+static const char *ll_bcsym(void *lib, const char *sym)
+{
+#if defined(RTLD_DEFAULT)
+  if (lib == NULL) lib = RTLD_DEFAULT;
+#elif LJ_TARGET_OSX || LJ_TARGET_BSD
+  if (lib == NULL) lib = (void *)(intptr_t)-2;
+#endif
+  return (const char *)dlsym(lib, sym);
+}
+
+#elif LJ_TARGET_WINDOWS
+
+#define WIN32_LEAN_AND_MEAN
+#ifndef WINVER
+#define WINVER 0x0500
+#endif
+#include <windows.h>
+
+#ifndef GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS
+#define GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS  4
+#define GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT  2
+BOOL WINAPI GetModuleHandleExA(DWORD, LPCSTR, HMODULE*);
+#endif
+
+#undef setprogdir
+
+static void setprogdir(lua_State *L)
+{
+  char buff[MAX_PATH + 1];
+  char *lb;
+  DWORD nsize = sizeof(buff);
+  DWORD n = GetModuleFileNameA(NULL, buff, nsize);
+  if (n == 0 || n == nsize || (lb = strrchr(buff, '\\')) == NULL) {
+    luaL_error(L, "unable to get ModuleFileName");
+  } else {
+    *lb = '\0';
+    luaL_gsub(L, lua_tostring(L, -1), LUA_EXECDIR, buff);
+    lua_remove(L, -2);  /* remove original string */
+  }
+}
+
+static void pusherror(lua_State *L)
+{
+  DWORD error = GetLastError();
+  char buffer[128];
+  if (FormatMessageA(FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_FROM_SYSTEM,
+      NULL, error, 0, buffer, sizeof(buffer), NULL))
+    lua_pushstring(L, buffer);
+  else
+    lua_pushfstring(L, "system error %d\n", error);
+}
+
+static void ll_unloadlib(void *lib)
+{
+  FreeLibrary((HINSTANCE)lib);
+}
+
+static void *ll_load(lua_State *L, const char *path)
+{
+  HINSTANCE lib = LoadLibraryA(path);
+  if (lib == NULL) pusherror(L);
+  return lib;
+}
+
+static lua_CFunction ll_sym(lua_State *L, void *lib, const char *sym)
+{
+  lua_CFunction f = (lua_CFunction)GetProcAddress((HINSTANCE)lib, sym);
+  if (f == NULL) pusherror(L);
+  return f;
+}
+
+static const char *ll_bcsym(void *lib, const char *sym)
+{
+  if (lib) {
+    return (const char *)GetProcAddress((HINSTANCE)lib, sym);
+  } else {
+    HINSTANCE h = GetModuleHandleA(NULL);
+    const char *p = (const char *)GetProcAddress(h, sym);
+    if (p == NULL && GetModuleHandleExA(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS|GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT,
+                                        (const char *)ll_bcsym, &h))
+      p = (const char *)GetProcAddress(h, sym);
+    return p;
+  }
+}
+
+#else
+
+#undef PACKAGE_LIB_FAIL
+#define PACKAGE_LIB_FAIL        "absent"
+
+#define DLMSG   "dynamic libraries not enabled; no support for target OS"
+
+static void ll_unloadlib(void *lib)
+{
+  (void)lib;
+}
+
+static void *ll_load(lua_State *L, const char *path)
+{
+  (void)path;
+  lua_pushliteral(L, DLMSG);
+  return NULL;
+}
+
+static lua_CFunction ll_sym(lua_State *L, void *lib, const char *sym)
+{
+  (void)lib; (void)sym;
+  lua_pushliteral(L, DLMSG);
+  return NULL;
+}
+
+static const char *ll_bcsym(void *lib, const char *sym)
+{
+  (void)lib; (void)sym;
+  return NULL;
+}
+
+#endif
+
+/* ------------------------------------------------------------------------ */
+
+static void **ll_register(lua_State *L, const char *path)
+{
+  void **plib;
+  lua_pushfstring(L, "LOADLIB: %s", path);
+  lua_gettable(L, LUA_REGISTRYINDEX);  /* check library in registry? */
+  if (!lua_isnil(L, -1)) {  /* is there an entry? */
+    plib = (void **)lua_touserdata(L, -1);
+  } else {  /* no entry yet; create one */
+    lua_pop(L, 1);
+    plib = (void **)lua_newuserdata(L, sizeof(void *));
+    *plib = NULL;
+    luaL_getmetatable(L, "_LOADLIB");
+    lua_setmetatable(L, -2);
+    lua_pushfstring(L, "LOADLIB: %s", path);
+    lua_pushvalue(L, -2);
+    lua_settable(L, LUA_REGISTRYINDEX);
+  }
+  return plib;
+}
+
+static const char *mksymname(lua_State *L, const char *modname,
+                             const char *prefix)
+{
+  const char *funcname;
+  const char *mark = strchr(modname, *LUA_IGMARK);
+  if (mark) modname = mark + 1;
+  funcname = luaL_gsub(L, modname, ".", "_");
+  funcname = lua_pushfstring(L, prefix, funcname);
+  lua_remove(L, -2);  /* remove 'gsub' result */
+  return funcname;
+}
+
+static int ll_loadfunc(lua_State *L, const char *path, const char *name, int r)
+{
+  void **reg = ll_register(L, path);
+  if (*reg == NULL) *reg = ll_load(L, path);
+  if (*reg == NULL) {
+    return PACKAGE_ERR_LIB;  /* unable to load library */
+  } else {
+    const char *sym = r ? name : mksymname(L, name, SYMPREFIX_CF);
+    lua_CFunction f = ll_sym(L, *reg, sym);
+    if (f) {
+      lua_pushcfunction(L, f);
+      return 0;
+    }
+    if (!r) {
+      const char *bcdata = ll_bcsym(*reg, mksymname(L, name, SYMPREFIX_BC));
+      lua_pop(L, 1);
+      if (bcdata) {
+        if (luaL_loadbuffer(L, bcdata, ~(size_t)0, name) != 0)
+          return PACKAGE_ERR_LOAD;
+        return 0;
+      }
+    }
+    return PACKAGE_ERR_FUNC;  /* unable to find function */
+  }
+}
+
+static int lj_cf_package_loadlib(lua_State *L)
+{
+  const char *path = luaL_checkstring(L, 1);
+  const char *init = luaL_checkstring(L, 2);
+  int st = ll_loadfunc(L, path, init, 1);
+  if (st == 0) {  /* no errors? */
+    return 1;  /* return the loaded function */
+  } else {  /* error; error message is on stack top */
+    lua_pushnil(L);
+    lua_insert(L, -2);
+    lua_pushstring(L, (st == PACKAGE_ERR_LIB) ?  PACKAGE_LIB_FAIL : "init");
+    return 3;  /* return nil, error message, and where */
+  }
+}
+
+static int lj_cf_package_unloadlib(lua_State *L)
+{
+  void **lib = (void **)luaL_checkudata(L, 1, "_LOADLIB");
+  if (*lib) ll_unloadlib(*lib);
+  *lib = NULL;  /* mark library as closed */
+  return 0;
+}
+
+/* ------------------------------------------------------------------------ */
+
+static int readable(const char *filename)
+{
+  FILE *f = fopen(filename, "r");  /* try to open file */
+  if (f == NULL) return 0;  /* open failed */
+  fclose(f);
+  return 1;
+}
+
+static const char *pushnexttemplate(lua_State *L, const char *path)
+{
+  const char *l;
+  while (*path == *LUA_PATHSEP) path++;  /* skip separators */
+  if (*path == '\0') return NULL;  /* no more templates */
+  l = strchr(path, *LUA_PATHSEP);  /* find next separator */
+  if (l == NULL) l = path + strlen(path);
+  lua_pushlstring(L, path, (size_t)(l - path));  /* template */
+  return l;
+}
+
+static const char *searchpath (lua_State *L, const char *name,
+                               const char *path)
+{
+  name = luaL_gsub(L, name, ".", LUA_DIRSEP);
+  lua_pushliteral(L, "");  /* error accumulator */
+  while ((path = pushnexttemplate(L, path)) != NULL) {
+    const char *filename = luaL_gsub(L, lua_tostring(L, -1),
+                                     LUA_PATH_MARK, name);
+    lua_remove(L, -2);  /* remove path template */
+    if (readable(filename))  /* does file exist and is readable? */
+      return filename;  /* return that file name */
+    lua_pushfstring(L, "\n\tno file " LUA_QS, filename);
+    lua_remove(L, -2);  /* remove file name */
+    lua_concat(L, 2);  /* add entry to possible error message */
+  }
+  return NULL;  /* not found */
+}
+
+static int lj_cf_package_searchpath(lua_State *L)
+{
+  const char *f = searchpath(L, luaL_checkstring(L, 1), luaL_checkstring(L, 2));
+  if (f != NULL) {
+    return 1;
+  } else {  /* error message is on top of the stack */
+    lua_pushnil(L);
+    lua_insert(L, -2);
+    return 2;  /* return nil + error message */
+  }
+}
+
+static const char *findfile(lua_State *L, const char *name,
+                            const char *pname)
+{
+  const char *path;
+  lua_getfield(L, LUA_ENVIRONINDEX, pname);
+  path = lua_tostring(L, -1);
+  if (path == NULL)
+    luaL_error(L, LUA_QL("package.%s") " must be a string", pname);
+  return searchpath(L, name, path);
+}
+
+static void loaderror(lua_State *L, const char *filename)
+{
+  luaL_error(L, "error loading module " LUA_QS " from file " LUA_QS ":\n\t%s",
+             lua_tostring(L, 1), filename, lua_tostring(L, -1));
+}
+
+static int lj_cf_package_loader_lua(lua_State *L)
+{
+  const char *filename;
+  const char *name = luaL_checkstring(L, 1);
+  filename = findfile(L, name, "path");
+  if (filename == NULL) return 1;  /* library not found in this path */
+  if (luaL_loadfile(L, filename) != 0)
+    loaderror(L, filename);
+  return 1;  /* library loaded successfully */
+}
+
+static int lj_cf_package_loader_c(lua_State *L)
+{
+  const char *name = luaL_checkstring(L, 1);
+  const char *filename = findfile(L, name, "cpath");
+  if (filename == NULL) return 1;  /* library not found in this path */
+  if (ll_loadfunc(L, filename, name, 0) != 0)
+    loaderror(L, filename);
+  return 1;  /* library loaded successfully */
+}
+
+static int lj_cf_package_loader_croot(lua_State *L)
+{
+  const char *filename;
+  const char *name = luaL_checkstring(L, 1);
+  const char *p = strchr(name, '.');
+  int st;
+  if (p == NULL) return 0;  /* is root */
+  lua_pushlstring(L, name, (size_t)(p - name));
+  filename = findfile(L, lua_tostring(L, -1), "cpath");
+  if (filename == NULL) return 1;  /* root not found */
+  if ((st = ll_loadfunc(L, filename, name, 0)) != 0) {
+    if (st != PACKAGE_ERR_FUNC) loaderror(L, filename);  /* real error */
+    lua_pushfstring(L, "\n\tno module " LUA_QS " in file " LUA_QS,
+                    name, filename);
+    return 1;  /* function not found */
+  }
+  return 1;
+}
+
+static int lj_cf_package_loader_preload(lua_State *L)
+{
+  const char *name = luaL_checkstring(L, 1);
+  lua_getfield(L, LUA_ENVIRONINDEX, "preload");
+  if (!lua_istable(L, -1))
+    luaL_error(L, LUA_QL("package.preload") " must be a table");
+  lua_getfield(L, -1, name);
+  if (lua_isnil(L, -1)) {  /* Not found? */
+    const char *bcname = mksymname(L, name, SYMPREFIX_BC);
+    const char *bcdata = ll_bcsym(NULL, bcname);
+    if (bcdata == NULL || luaL_loadbuffer(L, bcdata, ~(size_t)0, name) != 0)
+      lua_pushfstring(L, "\n\tno field package.preload['%s']", name);
+  }
+  return 1;
+}
+
+/* ------------------------------------------------------------------------ */
+
+static const int sentinel_ = 0;
+#define sentinel        ((void *)&sentinel_)
+
+static int lj_cf_package_require(lua_State *L)
+{
+  const char *name = luaL_checkstring(L, 1);
+  int i;
+  lua_settop(L, 1);  /* _LOADED table will be at index 2 */
+  lua_getfield(L, LUA_REGISTRYINDEX, "_LOADED");
+  lua_getfield(L, 2, name);
+  if (lua_toboolean(L, -1)) {  /* is it there? */
+    if (lua_touserdata(L, -1) == sentinel)  /* check loops */
+      luaL_error(L, "loop or previous error loading module " LUA_QS, name);
+    return 1;  /* package is already loaded */
+  }
+  /* else must load it; iterate over available loaders */
+  lua_getfield(L, LUA_ENVIRONINDEX, "loaders");
+  if (!lua_istable(L, -1))
+    luaL_error(L, LUA_QL("package.loaders") " must be a table");
+  lua_pushliteral(L, "");  /* error message accumulator */
+  for (i = 1; ; i++) {
+    lua_rawgeti(L, -2, i);  /* get a loader */
+    if (lua_isnil(L, -1))
+      luaL_error(L, "module " LUA_QS " not found:%s",
+                 name, lua_tostring(L, -2));
+    lua_pushstring(L, name);
+    lua_call(L, 1, 1);  /* call it */
+    if (lua_isfunction(L, -1))  /* did it find module? */
+      break;  /* module loaded successfully */
+    else if (lua_isstring(L, -1))  /* loader returned error message? */
+      lua_concat(L, 2);  /* accumulate it */
+    else
+      lua_pop(L, 1);
+  }
+  lua_pushlightuserdata(L, sentinel);
+  lua_setfield(L, 2, name);  /* _LOADED[name] = sentinel */
+  lua_pushstring(L, name);  /* pass name as argument to module */
+  lua_call(L, 1, 1);  /* run loaded module */
+  if (!lua_isnil(L, -1))  /* non-nil return? */
+    lua_setfield(L, 2, name);  /* _LOADED[name] = returned value */
+  lua_getfield(L, 2, name);
+  if (lua_touserdata(L, -1) == sentinel) {   /* module did not set a value? */
+    lua_pushboolean(L, 1);  /* use true as result */
+    lua_pushvalue(L, -1);  /* extra copy to be returned */
+    lua_setfield(L, 2, name);  /* _LOADED[name] = true */
+  }
+  lj_lib_checkfpu(L);
+  return 1;
+}
+
+/* ------------------------------------------------------------------------ */
+
+static void setfenv(lua_State *L)
+{
+  lua_Debug ar;
+  if (lua_getstack(L, 1, &ar) == 0 ||
+      lua_getinfo(L, "f", &ar) == 0 ||  /* get calling function */
+      lua_iscfunction(L, -1))
+    luaL_error(L, LUA_QL("module") " not called from a Lua function");
+  lua_pushvalue(L, -2);
+  lua_setfenv(L, -2);
+  lua_pop(L, 1);
+}
+
+static void dooptions(lua_State *L, int n)
+{
+  int i;
+  for (i = 2; i <= n; i++) {
+    lua_pushvalue(L, i);  /* get option (a function) */
+    lua_pushvalue(L, -2);  /* module */
+    lua_call(L, 1, 0);
+  }
+}
+
+static void modinit(lua_State *L, const char *modname)
+{
+  const char *dot;
+  lua_pushvalue(L, -1);
+  lua_setfield(L, -2, "_M");  /* module._M = module */
+  lua_pushstring(L, modname);
+  lua_setfield(L, -2, "_NAME");
+  dot = strrchr(modname, '.');  /* look for last dot in module name */
+  if (dot == NULL) dot = modname; else dot++;
+  /* set _PACKAGE as package name (full module name minus last part) */
+  lua_pushlstring(L, modname, (size_t)(dot - modname));
+  lua_setfield(L, -2, "_PACKAGE");
+}
+
+static int lj_cf_package_module(lua_State *L)
+{
+  const char *modname = luaL_checkstring(L, 1);
+  int loaded = lua_gettop(L) + 1;  /* index of _LOADED table */
+  lua_getfield(L, LUA_REGISTRYINDEX, "_LOADED");
+  lua_getfield(L, loaded, modname);  /* get _LOADED[modname] */
+  if (!lua_istable(L, -1)) {  /* not found? */
+    lua_pop(L, 1);  /* remove previous result */
+    /* try global variable (and create one if it does not exist) */
+    if (luaL_findtable(L, LUA_GLOBALSINDEX, modname, 1) != NULL)
+      lj_err_callerv(L, LJ_ERR_BADMODN, modname);
+    lua_pushvalue(L, -1);
+    lua_setfield(L, loaded, modname);  /* _LOADED[modname] = new table */
+  }
+  /* check whether table already has a _NAME field */
+  lua_getfield(L, -1, "_NAME");
+  if (!lua_isnil(L, -1)) {  /* is table an initialized module? */
+    lua_pop(L, 1);
+  } else {  /* no; initialize it */
+    lua_pop(L, 1);
+    modinit(L, modname);
+  }
+  lua_pushvalue(L, -1);
+  setfenv(L);
+  dooptions(L, loaded - 1);
+  return 0;
+}
+
+static int lj_cf_package_seeall(lua_State *L)
+{
+  luaL_checktype(L, 1, LUA_TTABLE);
+  if (!lua_getmetatable(L, 1)) {
+    lua_createtable(L, 0, 1); /* create new metatable */
+    lua_pushvalue(L, -1);
+    lua_setmetatable(L, 1);
+  }
+  lua_pushvalue(L, LUA_GLOBALSINDEX);
+  lua_setfield(L, -2, "__index");  /* mt.__index = _G */
+  return 0;
+}
+
+/* ------------------------------------------------------------------------ */
+
+#define AUXMARK         "\1"
+
+static void setpath(lua_State *L, const char *fieldname, const char *envname,
+                    const char *def)
+{
+  const char *path = getenv(envname);
+  if (path == NULL) {
+    lua_pushstring(L, def);
+  } else {
+    path = luaL_gsub(L, path, LUA_PATHSEP LUA_PATHSEP,
+                              LUA_PATHSEP AUXMARK LUA_PATHSEP);
+    luaL_gsub(L, path, AUXMARK, def);
+    lua_remove(L, -2);
+  }
+  setprogdir(L);
+  lua_setfield(L, -2, fieldname);
+}
+
+static const luaL_Reg package_lib[] = {
+  { "loadlib",  lj_cf_package_loadlib },
+  { "searchpath",  lj_cf_package_searchpath },
+  { "seeall",   lj_cf_package_seeall },
+  { NULL, NULL }
+};
+
+static const luaL_Reg package_global[] = {
+  { "module",   lj_cf_package_module },
+  { "require",  lj_cf_package_require },
+  { NULL, NULL }
+};
+
+static const lua_CFunction package_loaders[] =
+{
+  lj_cf_package_loader_preload,
+  lj_cf_package_loader_lua,
+  lj_cf_package_loader_c,
+  lj_cf_package_loader_croot,
+  NULL
+};
+
+LUALIB_API int luaopen_package(lua_State *L)
+{
+  int i;
+  luaL_newmetatable(L, "_LOADLIB");
+  lj_lib_pushcf(L, lj_cf_package_unloadlib, 1);
+  lua_setfield(L, -2, "__gc");
+  luaL_register(L, LUA_LOADLIBNAME, package_lib);
+  lua_pushvalue(L, -1);
+  lua_replace(L, LUA_ENVIRONINDEX);
+  lua_createtable(L, sizeof(package_loaders)/sizeof(package_loaders[0])-1, 0);
+  for (i = 0; package_loaders[i] != NULL; i++) {
+    lj_lib_pushcf(L, package_loaders[i], 1);
+    lua_rawseti(L, -2, i+1);
+  }
+  lua_setfield(L, -2, "loaders");
+  setpath(L, "path", LUA_PATH, LUA_PATH_DEFAULT);
+  setpath(L, "cpath", LUA_CPATH, LUA_CPATH_DEFAULT);
+  lua_pushliteral(L, LUA_PATH_CONFIG);
+  lua_setfield(L, -2, "config");
+  luaL_findtable(L, LUA_REGISTRYINDEX, "_LOADED", 16);
+  lua_setfield(L, -2, "loaded");
+  luaL_findtable(L, LUA_REGISTRYINDEX, "_PRELOAD", 4);
+  lua_setfield(L, -2, "preload");
+  lua_pushvalue(L, LUA_GLOBALSINDEX);
+  luaL_register(L, NULL, package_global);
+  lua_pop(L, 1);
+  return 1;
+}
+