diff options
Diffstat (limited to '3rdparty/lua/src/loadlib.c')
-rw-r--r-- | 3rdparty/lua/src/loadlib.c | 169 |
1 files changed, 86 insertions, 83 deletions
diff --git a/3rdparty/lua/src/loadlib.c b/3rdparty/lua/src/loadlib.c index 79119287ae4..4791e748b16 100644 --- a/3rdparty/lua/src/loadlib.c +++ b/3rdparty/lua/src/loadlib.c @@ -1,5 +1,5 @@ /* -** $Id: loadlib.c,v 1.127 2015/11/23 11:30:45 roberto Exp $ +** $Id: loadlib.c,v 1.130 2017/01/12 17:14:26 roberto Exp $ ** Dynamic library loader for Lua ** See Copyright Notice in lua.h ** @@ -25,40 +25,9 @@ /* -** LUA_PATH_VAR and LUA_CPATH_VAR are the names of the environment -** variables that Lua check to set its paths. -*/ -#if !defined(LUA_PATH_VAR) -#define LUA_PATH_VAR "LUA_PATH" -#endif - -#if !defined(LUA_CPATH_VAR) -#define LUA_CPATH_VAR "LUA_CPATH" -#endif - -#define LUA_PATHSUFFIX "_" LUA_VERSION_MAJOR "_" LUA_VERSION_MINOR - -#define LUA_PATHVARVERSION LUA_PATH_VAR LUA_PATHSUFFIX -#define LUA_CPATHVARVERSION LUA_CPATH_VAR LUA_PATHSUFFIX - -/* -** LUA_PATH_SEP is the character that separates templates in a path. -** LUA_PATH_MARK is the string that marks the substitution points in a -** template. -** LUA_EXEC_DIR in a Windows path is replaced by the executable's -** directory. ** LUA_IGMARK is a mark to ignore all before it when building the ** luaopen_ function name. */ -#if !defined (LUA_PATH_SEP) -#define LUA_PATH_SEP ";" -#endif -#if !defined (LUA_PATH_MARK) -#define LUA_PATH_MARK "?" -#endif -#if !defined (LUA_EXEC_DIR) -#define LUA_EXEC_DIR "!" -#endif #if !defined (LUA_IGMARK) #define LUA_IGMARK "-" #endif @@ -94,7 +63,8 @@ static const int CLIBS = 0; #define LIB_FAIL "open" -#define setprogdir(L) ((void)0) + +#define setprogdir(L) ((void)0) /* @@ -179,7 +149,6 @@ static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) { #include <windows.h> -#undef setprogdir /* ** optional flags for LoadLibraryEx @@ -189,21 +158,30 @@ static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) { #endif +#undef setprogdir + + +/* +** Replace in the path (on the top of the stack) any occurrence +** of LUA_EXEC_DIR with the executable's path. +*/ static void setprogdir (lua_State *L) { char buff[MAX_PATH + 1]; char *lb; DWORD nsize = sizeof(buff)/sizeof(char); - DWORD n = GetModuleFileNameA(NULL, buff, nsize); + DWORD n = GetModuleFileNameA(NULL, buff, nsize); /* get exec. name */ if (n == 0 || n == nsize || (lb = strrchr(buff, '\\')) == NULL) luaL_error(L, "unable to get ModuleFileName"); else { - *lb = '\0'; + *lb = '\0'; /* cut name on the last '\\' to get the path */ luaL_gsub(L, lua_tostring(L, -1), LUA_EXEC_DIR, buff); lua_remove(L, -2); /* remove original string */ } } + + static void pusherror (lua_State *L) { int error = GetLastError(); char buffer[128]; @@ -273,6 +251,67 @@ static lua_CFunction lsys_sym (lua_State *L, void *lib, const char *sym) { /* +** {================================================================== +** Set Paths +** =================================================================== +*/ + +/* +** LUA_PATH_VAR and LUA_CPATH_VAR are the names of the environment +** variables that Lua check to set its paths. +*/ +#if !defined(LUA_PATH_VAR) +#define LUA_PATH_VAR "LUA_PATH" +#endif + +#if !defined(LUA_CPATH_VAR) +#define LUA_CPATH_VAR "LUA_CPATH" +#endif + + +#define AUXMARK "\1" /* auxiliary mark */ + + +/* +** return registry.LUA_NOENV as a boolean +*/ +static int noenv (lua_State *L) { + int b; + lua_getfield(L, LUA_REGISTRYINDEX, "LUA_NOENV"); + b = lua_toboolean(L, -1); + lua_pop(L, 1); /* remove value */ + return b; +} + + +/* +** Set a path +*/ +static void setpath (lua_State *L, const char *fieldname, + const char *envname, + const char *dft) { + const char *nver = lua_pushfstring(L, "%s%s", envname, LUA_VERSUFFIX); + const char *path = getenv(nver); /* use versioned name */ + if (path == NULL) /* no environment variable? */ + path = getenv(envname); /* try unversioned name */ + if (path == NULL || noenv(L)) /* no environment variable? */ + lua_pushstring(L, dft); /* use default */ + else { + /* replace ";;" by ";AUXMARK;" and then AUXMARK by default path */ + path = luaL_gsub(L, path, LUA_PATH_SEP LUA_PATH_SEP, + LUA_PATH_SEP AUXMARK LUA_PATH_SEP); + luaL_gsub(L, path, AUXMARK, dft); + lua_remove(L, -2); /* remove result from 1st 'gsub' */ + } + setprogdir(L); + lua_setfield(L, -3, fieldname); /* package[fieldname] = path value */ + lua_pop(L, 1); /* pop versioned variable name */ +} + +/* }================================================================== */ + + +/* ** return registry.CLIBS[path] */ static void *checkclib (lua_State *L, const char *path) { @@ -520,7 +559,7 @@ static int searcher_Croot (lua_State *L) { static int searcher_preload (lua_State *L) { const char *name = luaL_checkstring(L, 1); - lua_getfield(L, LUA_REGISTRYINDEX, "_PRELOAD"); + lua_getfield(L, LUA_REGISTRYINDEX, LUA_PRELOAD_TABLE); if (lua_getfield(L, -1, name) == LUA_TNIL) /* not found? */ lua_pushfstring(L, "\n\tno field package.preload['%s']", name); return 1; @@ -557,9 +596,9 @@ static void findloader (lua_State *L, const char *name) { static int ll_require (lua_State *L) { const char *name = luaL_checkstring(L, 1); - lua_settop(L, 1); /* _LOADED table will be at index 2 */ - lua_getfield(L, LUA_REGISTRYINDEX, "_LOADED"); - lua_getfield(L, 2, name); /* _LOADED[name] */ + lua_settop(L, 1); /* LOADED table will be at index 2 */ + lua_getfield(L, LUA_REGISTRYINDEX, LUA_LOADED_TABLE); + lua_getfield(L, 2, name); /* LOADED[name] */ if (lua_toboolean(L, -1)) /* is it there? */ return 1; /* package is already loaded */ /* else must load package */ @@ -569,11 +608,11 @@ static int ll_require (lua_State *L) { lua_insert(L, -2); /* name is 1st argument (before search data) */ lua_call(L, 2, 1); /* run loader to load module */ if (!lua_isnil(L, -1)) /* non-nil return? */ - lua_setfield(L, 2, name); /* _LOADED[name] = returned value */ + lua_setfield(L, 2, name); /* LOADED[name] = returned value */ if (lua_getfield(L, 2, name) == LUA_TNIL) { /* module set no 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 */ + lua_setfield(L, 2, name); /* LOADED[name] = true */ } return 1; } @@ -666,41 +705,6 @@ static int ll_seeall (lua_State *L) { -/* auxiliary mark (for internal use) */ -#define AUXMARK "\1" - - -/* -** return registry.LUA_NOENV as a boolean -*/ -static int noenv (lua_State *L) { - int b; - lua_getfield(L, LUA_REGISTRYINDEX, "LUA_NOENV"); - b = lua_toboolean(L, -1); - lua_pop(L, 1); /* remove value */ - return b; -} - - -static void setpath (lua_State *L, const char *fieldname, const char *envname1, - const char *envname2, const char *def) { - const char *path = getenv(envname1); - if (path == NULL) /* no environment variable? */ - path = getenv(envname2); /* try alternative name */ - if (path == NULL || noenv(L)) /* no environment variable? */ - lua_pushstring(L, def); /* use default */ - else { - /* replace ";;" by ";AUXMARK;" and then AUXMARK by default path */ - path = luaL_gsub(L, path, LUA_PATH_SEP LUA_PATH_SEP, - LUA_PATH_SEP AUXMARK LUA_PATH_SEP); - luaL_gsub(L, path, AUXMARK, def); - lua_remove(L, -2); - } - setprogdir(L); - lua_setfield(L, -2, fieldname); -} - - static const luaL_Reg pk_funcs[] = { {"loadlib", ll_loadlib}, {"searchpath", ll_searchpath}, @@ -764,19 +768,18 @@ LUAMOD_API int luaopen_package (lua_State *L) { createclibstable(L); luaL_newlib(L, pk_funcs); /* create 'package' table */ createsearcherstable(L); - /* set field 'path' */ - setpath(L, "path", LUA_PATHVARVERSION, LUA_PATH_VAR, LUA_PATH_DEFAULT); - /* set field 'cpath' */ - setpath(L, "cpath", LUA_CPATHVARVERSION, LUA_CPATH_VAR, LUA_CPATH_DEFAULT); + /* set paths */ + setpath(L, "path", LUA_PATH_VAR, LUA_PATH_DEFAULT); + setpath(L, "cpath", LUA_CPATH_VAR, LUA_CPATH_DEFAULT); /* store config information */ lua_pushliteral(L, LUA_DIRSEP "\n" LUA_PATH_SEP "\n" LUA_PATH_MARK "\n" LUA_EXEC_DIR "\n" LUA_IGMARK "\n"); lua_setfield(L, -2, "config"); /* set field 'loaded' */ - luaL_getsubtable(L, LUA_REGISTRYINDEX, "_LOADED"); + luaL_getsubtable(L, LUA_REGISTRYINDEX, LUA_LOADED_TABLE); lua_setfield(L, -2, "loaded"); /* set field 'preload' */ - luaL_getsubtable(L, LUA_REGISTRYINDEX, "_PRELOAD"); + luaL_getsubtable(L, LUA_REGISTRYINDEX, LUA_PRELOAD_TABLE); lua_setfield(L, -2, "preload"); lua_pushglobaltable(L); lua_pushvalue(L, -2); /* set 'package' as upvalue for next lib */ |