diff options
Diffstat (limited to 'fluent-bit/lib/luajit-3065c9/src/lib_package.c')
| -rw-r--r-- | fluent-bit/lib/luajit-3065c9/src/lib_package.c | 628 |
1 files changed, 0 insertions, 628 deletions
diff --git a/fluent-bit/lib/luajit-3065c9/src/lib_package.c b/fluent-bit/lib/luajit-3065c9/src/lib_package.c deleted file mode 100644 index 1f8b0677..00000000 --- a/fluent-bit/lib/luajit-3065c9/src/lib_package.c +++ /dev/null @@ -1,628 +0,0 @@ -/* -** Package library. -** Copyright (C) 2005-2022 Mike Pall. See Copyright Notice in luajit.h -** -** Major portions taken verbatim or adapted from the Lua interpreter. -** Copyright (C) 1994-2012 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, int gl) -{ - void *lib = dlopen(path, RTLD_NOW | (gl ? RTLD_GLOBAL : RTLD_LOCAL)); - 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 -#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 - -#if LJ_TARGET_UWP -void *LJ_WIN_LOADLIBA(const char *path) -{ - DWORD err = GetLastError(); - wchar_t wpath[256]; - HANDLE lib = NULL; - if (MultiByteToWideChar(CP_ACP, 0, path, -1, wpath, 256) > 0) { - lib = LoadPackagedLibrary(wpath, 0); - } - SetLastError(err); - return lib; -} -#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(); -#if LJ_TARGET_XBOXONE - wchar_t wbuffer[128]; - char buffer[128*2]; - if (FormatMessageW(FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_FROM_SYSTEM, - NULL, error, 0, wbuffer, sizeof(wbuffer)/sizeof(wchar_t), NULL) && - WideCharToMultiByte(CP_ACP, 0, wbuffer, 128, buffer, 128*2, NULL, NULL)) -#else - char buffer[128]; - if (FormatMessageA(FORMAT_MESSAGE_IGNORE_INSERTS | FORMAT_MESSAGE_FROM_SYSTEM, - NULL, error, 0, buffer, sizeof(buffer), NULL)) -#endif - 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, int gl) -{ - HINSTANCE lib = LJ_WIN_LOADLIBA(path); - if (lib == NULL) pusherror(L); - UNUSED(gl); - 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; -} - -#if LJ_TARGET_UWP -EXTERN_C IMAGE_DOS_HEADER __ImageBase; -#endif - -static const char *ll_bcsym(void *lib, const char *sym) -{ - if (lib) { - return (const char *)GetProcAddress((HINSTANCE)lib, sym); - } else { -#if LJ_TARGET_UWP - return (const char *)GetProcAddress((HINSTANCE)&__ImageBase, 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; -#endif - } -} - -#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) -{ - UNUSED(lib); -} - -static void *ll_load(lua_State *L, const char *path, int gl) -{ - UNUSED(path); UNUSED(gl); - lua_pushliteral(L, DLMSG); - return NULL; -} - -static lua_CFunction ll_sym(lua_State *L, void *lib, const char *sym) -{ - UNUSED(lib); UNUSED(sym); - lua_pushliteral(L, DLMSG); - return NULL; -} - -static const char *ll_bcsym(void *lib, const char *sym) -{ - UNUSED(lib); UNUSED(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_setmetatable(L, "_LOADLIB"); - 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; - if (strlen(path) >= 4096) { - lua_pushliteral(L, "path too long"); - return PACKAGE_ERR_LIB; - } - reg = ll_register(L, path); - if (*reg == NULL) *reg = ll_load(L, path, (*name == '*')); - if (*reg == NULL) { - return PACKAGE_ERR_LIB; /* Unable to load library. */ - } else if (*name == '*') { /* Only load library into global namespace. */ - lua_pushboolean(L, 1); - return 0; - } 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, const char *sep, - const char *dirsep) -{ - luaL_Buffer msg; /* to build error message */ - luaL_buffinit(L, &msg); - if (*sep != '\0') /* non-empty separator? */ - name = luaL_gsub(L, name, sep, dirsep); /* replace it by 'dirsep' */ - 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 */ - luaL_addvalue(&msg); /* concatenate error msg. entry */ - } - luaL_pushresult(&msg); /* create 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), - luaL_optstring(L, 3, "."), - luaL_optstring(L, 4, LUA_DIRSEP)); - 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, ".", LUA_DIRSEP); -} - -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; -} - -/* ------------------------------------------------------------------------ */ - -#define KEY_SENTINEL (U64x(80000000,00000000)|'s') - -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 ((L->top-1)->u64 == KEY_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); - } - (L->top++)->u64 = KEY_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 ((L->top-1)->u64 == KEY_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 lastarg = (int)(L->top - L->base); - luaL_pushmodule(L, modname, 1); - lua_getfield(L, -1, "_NAME"); - if (!lua_isnil(L, -1)) { /* Module already initialized? */ - lua_pop(L, 1); - } else { - lua_pop(L, 1); - modinit(L, modname); - } - lua_pushvalue(L, -1); - setfenv(L); - dooptions(L, lastarg); - return LJ_52; -} - -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, int noenv) -{ -#if LJ_TARGET_CONSOLE - const char *path = NULL; - UNUSED(envname); -#else - const char *path = getenv(envname); -#endif - if (path == NULL || noenv) { - 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; - int noenv; - 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_copy(L, -1, 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); - } -#if LJ_52 - lua_pushvalue(L, -1); - lua_setfield(L, -3, "searchers"); -#endif - lua_setfield(L, -2, "loaders"); - lua_getfield(L, LUA_REGISTRYINDEX, "LUA_NOENV"); - noenv = lua_toboolean(L, -1); - lua_pop(L, 1); - setpath(L, "path", LUA_PATH, LUA_PATH_DEFAULT, noenv); - setpath(L, "cpath", LUA_CPATH, LUA_CPATH_DEFAULT, noenv); - 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; -} - |