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initconfig.c
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#include "Python.h"
#include "osdefs.h" /* DELIM */
#include "pycore_initconfig.h"
#include "pycore_fileutils.h"
#include "pycore_getopt.h"
#include "pycore_pylifecycle.h"
#include "pycore_pymem.h"
#include "pycore_pystate.h" /* _PyRuntime */
#include "pycore_pathconfig.h"
#include <locale.h> /* setlocale() */
#ifdef HAVE_LANGINFO_H
# include <langinfo.h> /* nl_langinfo(CODESET) */
#endif
#if defined(MS_WINDOWS) || defined(__CYGWIN__)
# include <windows.h> /* GetACP() */
# ifdef HAVE_IO_H
# include <io.h>
# endif
# ifdef HAVE_FCNTL_H
# include <fcntl.h> /* O_BINARY */
# endif
#endif
/* --- Command line options --------------------------------------- */
/* Short usage message (with %s for argv0) */
static const char usage_line[] =
"usage: %ls [option] ... [-c cmd | -m mod | file | -] [arg] ...\n";
/* Long usage message, split into parts < 512 bytes */
static const char usage_1[] = "\
Options and arguments (and corresponding environment variables):\n\
-b : issue warnings about str(bytes_instance), str(bytearray_instance)\n\
and comparing bytes/bytearray with str. (-bb: issue errors)\n\
-B : don't write .pyc files on import; also PYTHONDONTWRITEBYTECODE=x\n\
-c cmd : program passed in as string (terminates option list)\n\
-d : debug output from parser; also PYTHONDEBUG=x\n\
-E : ignore PYTHON* environment variables (such as PYTHONPATH)\n\
-h : print this help message and exit (also --help)\n\
";
static const char usage_2[] = "\
-i : inspect interactively after running script; forces a prompt even\n\
if stdin does not appear to be a terminal; also PYTHONINSPECT=x\n\
-I : isolate Python from the user's environment (implies -E and -s)\n\
-m mod : run library module as a script (terminates option list)\n\
-O : remove assert and __debug__-dependent statements; add .opt-1 before\n\
.pyc extension; also PYTHONOPTIMIZE=x\n\
-OO : do -O changes and also discard docstrings; add .opt-2 before\n\
.pyc extension\n\
-q : don't print version and copyright messages on interactive startup\n\
-s : don't add user site directory to sys.path; also PYTHONNOUSERSITE\n\
-S : don't imply 'import site' on initialization\n\
";
static const char usage_3[] = "\
-u : force the stdout and stderr streams to be unbuffered;\n\
this option has no effect on stdin; also PYTHONUNBUFFERED=x\n\
-v : verbose (trace import statements); also PYTHONVERBOSE=x\n\
can be supplied multiple times to increase verbosity\n\
-V : print the Python version number and exit (also --version)\n\
when given twice, print more information about the build\n\
-W arg : warning control; arg is action:message:category:module:lineno\n\
also PYTHONWARNINGS=arg\n\
-x : skip first line of source, allowing use of non-Unix forms of #!cmd\n\
-X opt : set implementation-specific option\n\
--check-hash-based-pycs always|default|never:\n\
control how Python invalidates hash-based .pyc files\n\
";
static const char usage_4[] = "\
file : program read from script file\n\
- : program read from stdin (default; interactive mode if a tty)\n\
arg ...: arguments passed to program in sys.argv[1:]\n\n\
Other environment variables:\n\
PYTHONSTARTUP: file executed on interactive startup (no default)\n\
PYTHONPATH : '%lc'-separated list of directories prefixed to the\n\
default module search path. The result is sys.path.\n\
";
static const char usage_5[] =
"PYTHONHOME : alternate <prefix> directory (or <prefix>%lc<exec_prefix>).\n"
" The default module search path uses %s.\n"
"PYTHONCASEOK : ignore case in 'import' statements (Windows).\n"
"PYTHONIOENCODING: Encoding[:errors] used for stdin/stdout/stderr.\n"
"PYTHONFAULTHANDLER: dump the Python traceback on fatal errors.\n";
static const char usage_6[] =
"PYTHONHASHSEED: if this variable is set to 'random', a random value is used\n"
" to seed the hashes of str, bytes and datetime objects. It can also be\n"
" set to an integer in the range [0,4294967295] to get hash values with a\n"
" predictable seed.\n"
"PYTHONMALLOC: set the Python memory allocators and/or install debug hooks\n"
" on Python memory allocators. Use PYTHONMALLOC=debug to install debug\n"
" hooks.\n"
"PYTHONCOERCECLOCALE: if this variable is set to 0, it disables the locale\n"
" coercion behavior. Use PYTHONCOERCECLOCALE=warn to request display of\n"
" locale coercion and locale compatibility warnings on stderr.\n"
"PYTHONBREAKPOINT: if this variable is set to 0, it disables the default\n"
" debugger. It can be set to the callable of your debugger of choice.\n"
"PYTHONDEVMODE: enable the development mode.\n"
"PYTHONPYCACHEPREFIX: root directory for bytecode cache (pyc) files.\n";
#if defined(MS_WINDOWS)
# define PYTHONHOMEHELP "<prefix>\\python{major}{minor}"
#else
# define PYTHONHOMEHELP "<prefix>/lib/pythonX.X"
#endif
/* --- Global configuration variables ----------------------------- */
/* UTF-8 mode (PEP 540): if equals to 1, use the UTF-8 encoding, and change
stdin and stdout error handler to "surrogateescape". */
int Py_UTF8Mode = 0;
int Py_DebugFlag = 0; /* Needed by parser.c */
int Py_VerboseFlag = 0; /* Needed by import.c */
int Py_QuietFlag = 0; /* Needed by sysmodule.c */
int Py_InteractiveFlag = 0; /* Needed by Py_FdIsInteractive() below */
int Py_InspectFlag = 0; /* Needed to determine whether to exit at SystemExit */
int Py_OptimizeFlag = 0; /* Needed by compile.c */
int Py_NoSiteFlag = 0; /* Suppress 'import site' */
int Py_BytesWarningFlag = 0; /* Warn on str(bytes) and str(buffer) */
int Py_FrozenFlag = 0; /* Needed by getpath.c */
int Py_IgnoreEnvironmentFlag = 0; /* e.g. PYTHONPATH, PYTHONHOME */
int Py_DontWriteBytecodeFlag = 0; /* Suppress writing bytecode files (*.pyc) */
int Py_NoUserSiteDirectory = 0; /* for -s and site.py */
int Py_UnbufferedStdioFlag = 0; /* Unbuffered binary std{in,out,err} */
int Py_HashRandomizationFlag = 0; /* for -R and PYTHONHASHSEED */
int Py_IsolatedFlag = 0; /* for -I, isolate from user's env */
#ifdef MS_WINDOWS
int Py_LegacyWindowsFSEncodingFlag = 0; /* Uses mbcs instead of utf-8 */
int Py_LegacyWindowsStdioFlag = 0; /* Uses FileIO instead of WindowsConsoleIO */
#endif
static PyObject *
_Py_GetGlobalVariablesAsDict(void)
{
PyObject *dict, *obj;
dict = PyDict_New();
if (dict == NULL) {
return NULL;
}
#define SET_ITEM(KEY, EXPR) \
do { \
obj = (EXPR); \
if (obj == NULL) { \
return NULL; \
} \
int res = PyDict_SetItemString(dict, (KEY), obj); \
Py_DECREF(obj); \
if (res < 0) { \
goto fail; \
} \
} while (0)
#define SET_ITEM_INT(VAR) \
SET_ITEM(#VAR, PyLong_FromLong(VAR))
#define FROM_STRING(STR) \
((STR != NULL) ? \
PyUnicode_FromString(STR) \
: (Py_INCREF(Py_None), Py_None))
#define SET_ITEM_STR(VAR) \
SET_ITEM(#VAR, FROM_STRING(VAR))
SET_ITEM_STR(Py_FileSystemDefaultEncoding);
SET_ITEM_INT(Py_HasFileSystemDefaultEncoding);
SET_ITEM_STR(Py_FileSystemDefaultEncodeErrors);
SET_ITEM_INT(_Py_HasFileSystemDefaultEncodeErrors);
SET_ITEM_INT(Py_UTF8Mode);
SET_ITEM_INT(Py_DebugFlag);
SET_ITEM_INT(Py_VerboseFlag);
SET_ITEM_INT(Py_QuietFlag);
SET_ITEM_INT(Py_InteractiveFlag);
SET_ITEM_INT(Py_InspectFlag);
SET_ITEM_INT(Py_OptimizeFlag);
SET_ITEM_INT(Py_NoSiteFlag);
SET_ITEM_INT(Py_BytesWarningFlag);
SET_ITEM_INT(Py_FrozenFlag);
SET_ITEM_INT(Py_IgnoreEnvironmentFlag);
SET_ITEM_INT(Py_DontWriteBytecodeFlag);
SET_ITEM_INT(Py_NoUserSiteDirectory);
SET_ITEM_INT(Py_UnbufferedStdioFlag);
SET_ITEM_INT(Py_HashRandomizationFlag);
SET_ITEM_INT(Py_IsolatedFlag);
#ifdef MS_WINDOWS
SET_ITEM_INT(Py_LegacyWindowsFSEncodingFlag);
SET_ITEM_INT(Py_LegacyWindowsStdioFlag);
#endif
return dict;
fail:
Py_DECREF(dict);
return NULL;
#undef FROM_STRING
#undef SET_ITEM
#undef SET_ITEM_INT
#undef SET_ITEM_STR
}
/* --- PyStatus ----------------------------------------------- */
PyStatus PyStatus_Ok(void)
{ return _PyStatus_OK(); }
PyStatus PyStatus_Error(const char *err_msg)
{
return (PyStatus){._type = _PyStatus_TYPE_ERROR,
.err_msg = err_msg};
}
PyStatus PyStatus_NoMemory(void)
{ return PyStatus_Error("memory allocation failed"); }
PyStatus PyStatus_Exit(int exitcode)
{ return _PyStatus_EXIT(exitcode); }
int PyStatus_IsError(PyStatus status)
{ return _PyStatus_IS_ERROR(status); }
int PyStatus_IsExit(PyStatus status)
{ return _PyStatus_IS_EXIT(status); }
int PyStatus_Exception(PyStatus status)
{ return _PyStatus_EXCEPTION(status); }
/* --- PyWideStringList ------------------------------------------------ */
#ifndef NDEBUG
int
_PyWideStringList_CheckConsistency(const PyWideStringList *list)
{
assert(list->length >= 0);
if (list->length != 0) {
assert(list->items != NULL);
}
for (Py_ssize_t i = 0; i < list->length; i++) {
assert(list->items[i] != NULL);
}
return 1;
}
#endif /* Py_DEBUG */
void
_PyWideStringList_Clear(PyWideStringList *list)
{
assert(_PyWideStringList_CheckConsistency(list));
for (Py_ssize_t i=0; i < list->length; i++) {
PyMem_RawFree(list->items[i]);
}
PyMem_RawFree(list->items);
list->length = 0;
list->items = NULL;
}
int
_PyWideStringList_Copy(PyWideStringList *list, const PyWideStringList *list2)
{
assert(_PyWideStringList_CheckConsistency(list));
assert(_PyWideStringList_CheckConsistency(list2));
if (list2->length == 0) {
_PyWideStringList_Clear(list);
return 0;
}
PyWideStringList copy = PyWideStringList_INIT;
size_t size = list2->length * sizeof(list2->items[0]);
copy.items = PyMem_RawMalloc(size);
if (copy.items == NULL) {
return -1;
}
for (Py_ssize_t i=0; i < list2->length; i++) {
wchar_t *item = _PyMem_RawWcsdup(list2->items[i]);
if (item == NULL) {
_PyWideStringList_Clear(©);
return -1;
}
copy.items[i] = item;
copy.length = i + 1;
}
_PyWideStringList_Clear(list);
*list = copy;
return 0;
}
PyStatus
PyWideStringList_Append(PyWideStringList *list, const wchar_t *item)
{
if (list->length == PY_SSIZE_T_MAX) {
/* lenght+1 would overflow */
return _PyStatus_NO_MEMORY();
}
wchar_t *item2 = _PyMem_RawWcsdup(item);
if (item2 == NULL) {
return _PyStatus_NO_MEMORY();
}
size_t size = (list->length + 1) * sizeof(list->items[0]);
wchar_t **items2 = (wchar_t **)PyMem_RawRealloc(list->items, size);
if (items2 == NULL) {
PyMem_RawFree(item2);
return _PyStatus_NO_MEMORY();
}
items2[list->length] = item2;
list->items = items2;
list->length++;
return _PyStatus_OK();
}
PyStatus
_PyWideStringList_Extend(PyWideStringList *list, const PyWideStringList *list2)
{
for (Py_ssize_t i = 0; i < list2->length; i++) {
PyStatus status = PyWideStringList_Append(list, list2->items[i]);
if (_PyStatus_EXCEPTION(status)) {
return status;
}
}
return _PyStatus_OK();
}
static int
_PyWideStringList_Find(PyWideStringList *list, const wchar_t *item)
{
for (Py_ssize_t i = 0; i < list->length; i++) {
if (wcscmp(list->items[i], item) == 0) {
return 1;
}
}
return 0;
}
PyObject*
_PyWideStringList_AsList(const PyWideStringList *list)
{
assert(_PyWideStringList_CheckConsistency(list));
PyObject *pylist = PyList_New(list->length);
if (pylist == NULL) {
return NULL;
}
for (Py_ssize_t i = 0; i < list->length; i++) {
PyObject *item = PyUnicode_FromWideChar(list->items[i], -1);
if (item == NULL) {
Py_DECREF(pylist);
return NULL;
}
PyList_SET_ITEM(pylist, i, item);
}
return pylist;
}
/* --- Py_SetStandardStreamEncoding() ----------------------------- */
/* Helper to allow an embedding application to override the normal
* mechanism that attempts to figure out an appropriate IO encoding
*/
static char *_Py_StandardStreamEncoding = NULL;
static char *_Py_StandardStreamErrors = NULL;
int
Py_SetStandardStreamEncoding(const char *encoding, const char *errors)
{
if (Py_IsInitialized()) {
/* This is too late to have any effect */
return -1;
}
int res = 0;
/* Py_SetStandardStreamEncoding() can be called before Py_Initialize(),
but Py_Initialize() can change the allocator. Use a known allocator
to be able to release the memory later. */
PyMemAllocatorEx old_alloc;
_PyMem_SetDefaultAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
/* Can't call PyErr_NoMemory() on errors, as Python hasn't been
* initialised yet.
*
* However, the raw memory allocators are initialised appropriately
* as C static variables, so _PyMem_RawStrdup is OK even though
* Py_Initialize hasn't been called yet.
*/
if (encoding) {
PyMem_RawFree(_Py_StandardStreamEncoding);
_Py_StandardStreamEncoding = _PyMem_RawStrdup(encoding);
if (!_Py_StandardStreamEncoding) {
res = -2;
goto done;
}
}
if (errors) {
PyMem_RawFree(_Py_StandardStreamErrors);
_Py_StandardStreamErrors = _PyMem_RawStrdup(errors);
if (!_Py_StandardStreamErrors) {
PyMem_RawFree(_Py_StandardStreamEncoding);
_Py_StandardStreamEncoding = NULL;
res = -3;
goto done;
}
}
#ifdef MS_WINDOWS
if (_Py_StandardStreamEncoding) {
/* Overriding the stream encoding implies legacy streams */
Py_LegacyWindowsStdioFlag = 1;
}
#endif
done:
PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
return res;
}
void
_Py_ClearStandardStreamEncoding(void)
{
/* Use the same allocator than Py_SetStandardStreamEncoding() */
PyMemAllocatorEx old_alloc;
_PyMem_SetDefaultAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
/* We won't need them anymore. */
if (_Py_StandardStreamEncoding) {
PyMem_RawFree(_Py_StandardStreamEncoding);
_Py_StandardStreamEncoding = NULL;
}
if (_Py_StandardStreamErrors) {
PyMem_RawFree(_Py_StandardStreamErrors);
_Py_StandardStreamErrors = NULL;
}
PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
}
/* --- Py_GetArgcArgv() ------------------------------------------- */
/* For Py_GetArgcArgv(); set by _Py_SetArgcArgv() */
static PyWideStringList orig_argv = {.length = 0, .items = NULL};
void
_Py_ClearArgcArgv(void)
{
PyMemAllocatorEx old_alloc;
_PyMem_SetDefaultAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
_PyWideStringList_Clear(&orig_argv);
PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
}
static int
_Py_SetArgcArgv(Py_ssize_t argc, wchar_t * const *argv)
{
const PyWideStringList argv_list = {.length = argc, .items = (wchar_t **)argv};
int res;
PyMemAllocatorEx old_alloc;
_PyMem_SetDefaultAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
res = _PyWideStringList_Copy(&orig_argv, &argv_list);
PyMem_SetAllocator(PYMEM_DOMAIN_RAW, &old_alloc);
return res;
}
/* Make the *original* argc/argv available to other modules.
This is rare, but it is needed by the secureware extension. */
void
Py_GetArgcArgv(int *argc, wchar_t ***argv)
{
*argc = (int)orig_argv.length;
*argv = orig_argv.items;
}
/* --- PyConfig ---------------------------------------------- */
#define DECODE_LOCALE_ERR(NAME, LEN) \
(((LEN) == -2) \
? _PyStatus_ERR("cannot decode " NAME) \
: _PyStatus_NO_MEMORY())
/* Free memory allocated in config, but don't clear all attributes */
void
PyConfig_Clear(PyConfig *config)
{
#define CLEAR(ATTR) \
do { \
PyMem_RawFree(ATTR); \
ATTR = NULL; \
} while (0)
CLEAR(config->pycache_prefix);
CLEAR(config->pythonpath_env);
CLEAR(config->home);
CLEAR(config->program_name);
_PyWideStringList_Clear(&config->argv);
_PyWideStringList_Clear(&config->warnoptions);
_PyWideStringList_Clear(&config->xoptions);
_PyWideStringList_Clear(&config->module_search_paths);
config->module_search_paths_set = 0;
CLEAR(config->executable);
CLEAR(config->base_executable);
CLEAR(config->prefix);
CLEAR(config->base_prefix);
CLEAR(config->exec_prefix);
CLEAR(config->base_exec_prefix);
CLEAR(config->filesystem_encoding);
CLEAR(config->filesystem_errors);
CLEAR(config->stdio_encoding);
CLEAR(config->stdio_errors);
CLEAR(config->run_command);
CLEAR(config->run_module);
CLEAR(config->run_filename);
CLEAR(config->check_hash_pycs_mode);
#undef CLEAR
}
void
_PyConfig_InitCompatConfig(PyConfig *config)
{
memset(config, 0, sizeof(*config));
config->_config_version = _Py_CONFIG_VERSION;
config->_config_init = (int)_PyConfig_INIT_COMPAT;
config->isolated = -1;
config->use_environment = -1;
config->dev_mode = -1;
config->install_signal_handlers = 1;
config->use_hash_seed = -1;
config->faulthandler = -1;
config->tracemalloc = -1;
config->module_search_paths_set = 0;
config->parse_argv = 0;
config->site_import = -1;
config->bytes_warning = -1;
config->inspect = -1;
config->interactive = -1;
config->optimization_level = -1;
config->parser_debug= -1;
config->write_bytecode = -1;
config->verbose = -1;
config->quiet = -1;
config->user_site_directory = -1;
config->configure_c_stdio = 0;
config->buffered_stdio = -1;
config->_install_importlib = 1;
config->check_hash_pycs_mode = NULL;
config->pathconfig_warnings = -1;
config->_init_main = 1;
#ifdef MS_WINDOWS
config->legacy_windows_stdio = -1;
#endif
}
static void
config_init_defaults(PyConfig *config)
{
_PyConfig_InitCompatConfig(config);
config->isolated = 0;
config->use_environment = 1;
config->site_import = 1;
config->bytes_warning = 0;
config->inspect = 0;
config->interactive = 0;
config->optimization_level = 0;
config->parser_debug= 0;
config->write_bytecode = 1;
config->verbose = 0;
config->quiet = 0;
config->user_site_directory = 1;
config->buffered_stdio = 1;
config->pathconfig_warnings = 1;
#ifdef MS_WINDOWS
config->legacy_windows_stdio = 0;
#endif
}
PyStatus
PyConfig_InitPythonConfig(PyConfig *config)
{
config_init_defaults(config);
config->_config_init = (int)_PyConfig_INIT_PYTHON;
config->configure_c_stdio = 1;
config->parse_argv = 1;
return _PyStatus_OK();
}
PyStatus
PyConfig_InitIsolatedConfig(PyConfig *config)
{
config_init_defaults(config);
config->_config_init = (int)_PyConfig_INIT_ISOLATED;
config->isolated = 1;
config->use_environment = 0;
config->user_site_directory = 0;
config->dev_mode = 0;
config->install_signal_handlers = 0;
config->use_hash_seed = 0;
config->faulthandler = 0;
config->tracemalloc = 0;
config->pathconfig_warnings = 0;
#ifdef MS_WINDOWS
config->legacy_windows_stdio = 0;
#endif
return _PyStatus_OK();
}
/* Copy str into *config_str (duplicate the string) */
PyStatus
PyConfig_SetString(PyConfig *config, wchar_t **config_str, const wchar_t *str)
{
PyStatus status = _Py_PreInitializeFromConfig(config, NULL);
if (_PyStatus_EXCEPTION(status)) {
return status;
}
wchar_t *str2;
if (str != NULL) {
str2 = _PyMem_RawWcsdup(str);
if (str2 == NULL) {
return _PyStatus_NO_MEMORY();
}
}
else {
str2 = NULL;
}
PyMem_RawFree(*config_str);
*config_str = str2;
return _PyStatus_OK();
}
static PyStatus
config_set_bytes_string(PyConfig *config, wchar_t **config_str,
const char *str, const char *decode_err_msg)
{
PyStatus status = _Py_PreInitializeFromConfig(config, NULL);
if (_PyStatus_EXCEPTION(status)) {
return status;
}
wchar_t *str2;
if (str != NULL) {
size_t len;
str2 = Py_DecodeLocale(str, &len);
if (str2 == NULL) {
if (len == (size_t)-2) {
return _PyStatus_ERR(decode_err_msg);
}
else {
return _PyStatus_NO_MEMORY();
}
}
}
else {
str2 = NULL;
}
PyMem_RawFree(*config_str);
*config_str = str2;
return _PyStatus_OK();
}
#define CONFIG_SET_BYTES_STR(config, config_str, str, NAME) \
config_set_bytes_string(config, config_str, str, "cannot decode " NAME)
/* Decode str using Py_DecodeLocale() and set the result into *config_str.
Pre-initialize Python if needed to ensure that encodings are properly
configured. */
PyStatus
PyConfig_SetBytesString(PyConfig *config, wchar_t **config_str,
const char *str)
{
return CONFIG_SET_BYTES_STR(config, config_str, str, "string");
}
PyStatus
_PyConfig_Copy(PyConfig *config, const PyConfig *config2)
{
PyStatus status;
PyConfig_Clear(config);
#define COPY_ATTR(ATTR) config->ATTR = config2->ATTR
#define COPY_WSTR_ATTR(ATTR) \
do { \
status = PyConfig_SetString(config, &config->ATTR, config2->ATTR); \
if (_PyStatus_EXCEPTION(status)) { \
return status; \
} \
} while (0)
#define COPY_WSTRLIST(LIST) \
do { \
if (_PyWideStringList_Copy(&config->LIST, &config2->LIST) < 0) { \
return _PyStatus_NO_MEMORY(); \
} \
} while (0)
COPY_ATTR(_config_init);
COPY_ATTR(isolated);
COPY_ATTR(use_environment);
COPY_ATTR(dev_mode);
COPY_ATTR(install_signal_handlers);
COPY_ATTR(use_hash_seed);
COPY_ATTR(hash_seed);
COPY_ATTR(_install_importlib);
COPY_ATTR(faulthandler);
COPY_ATTR(tracemalloc);
COPY_ATTR(import_time);
COPY_ATTR(show_ref_count);
COPY_ATTR(show_alloc_count);
COPY_ATTR(dump_refs);
COPY_ATTR(malloc_stats);
COPY_WSTR_ATTR(pycache_prefix);
COPY_WSTR_ATTR(pythonpath_env);
COPY_WSTR_ATTR(home);
COPY_WSTR_ATTR(program_name);
COPY_ATTR(parse_argv);
COPY_WSTRLIST(argv);
COPY_WSTRLIST(warnoptions);
COPY_WSTRLIST(xoptions);
COPY_WSTRLIST(module_search_paths);
COPY_ATTR(module_search_paths_set);
COPY_WSTR_ATTR(executable);
COPY_WSTR_ATTR(base_executable);
COPY_WSTR_ATTR(prefix);
COPY_WSTR_ATTR(base_prefix);
COPY_WSTR_ATTR(exec_prefix);
COPY_WSTR_ATTR(base_exec_prefix);
COPY_ATTR(site_import);
COPY_ATTR(bytes_warning);
COPY_ATTR(inspect);
COPY_ATTR(interactive);
COPY_ATTR(optimization_level);
COPY_ATTR(parser_debug);
COPY_ATTR(write_bytecode);
COPY_ATTR(verbose);
COPY_ATTR(quiet);
COPY_ATTR(user_site_directory);
COPY_ATTR(configure_c_stdio);
COPY_ATTR(buffered_stdio);
COPY_WSTR_ATTR(filesystem_encoding);
COPY_WSTR_ATTR(filesystem_errors);
COPY_WSTR_ATTR(stdio_encoding);
COPY_WSTR_ATTR(stdio_errors);
#ifdef MS_WINDOWS
COPY_ATTR(legacy_windows_stdio);
#endif
COPY_ATTR(skip_source_first_line);
COPY_WSTR_ATTR(run_command);
COPY_WSTR_ATTR(run_module);
COPY_WSTR_ATTR(run_filename);
COPY_WSTR_ATTR(check_hash_pycs_mode);
COPY_ATTR(pathconfig_warnings);
COPY_ATTR(_init_main);
#undef COPY_ATTR
#undef COPY_WSTR_ATTR
#undef COPY_WSTRLIST
return _PyStatus_OK();
}
static PyObject *
config_as_dict(const PyConfig *config)
{
PyObject *dict;
dict = PyDict_New();
if (dict == NULL) {
return NULL;
}
#define SET_ITEM(KEY, EXPR) \
do { \
PyObject *obj = (EXPR); \
if (obj == NULL) { \
goto fail; \
} \
int res = PyDict_SetItemString(dict, (KEY), obj); \
Py_DECREF(obj); \
if (res < 0) { \
goto fail; \
} \
} while (0)
#define SET_ITEM_INT(ATTR) \
SET_ITEM(#ATTR, PyLong_FromLong(config->ATTR))
#define SET_ITEM_UINT(ATTR) \
SET_ITEM(#ATTR, PyLong_FromUnsignedLong(config->ATTR))
#define FROM_WSTRING(STR) \
((STR != NULL) ? \
PyUnicode_FromWideChar(STR, -1) \
: (Py_INCREF(Py_None), Py_None))
#define SET_ITEM_WSTR(ATTR) \
SET_ITEM(#ATTR, FROM_WSTRING(config->ATTR))
#define SET_ITEM_WSTRLIST(LIST) \
SET_ITEM(#LIST, _PyWideStringList_AsList(&config->LIST))
SET_ITEM_INT(_config_init);
SET_ITEM_INT(isolated);
SET_ITEM_INT(use_environment);
SET_ITEM_INT(dev_mode);
SET_ITEM_INT(install_signal_handlers);
SET_ITEM_INT(use_hash_seed);
SET_ITEM_UINT(hash_seed);
SET_ITEM_INT(faulthandler);
SET_ITEM_INT(tracemalloc);
SET_ITEM_INT(import_time);
SET_ITEM_INT(show_ref_count);
SET_ITEM_INT(show_alloc_count);
SET_ITEM_INT(dump_refs);
SET_ITEM_INT(malloc_stats);
SET_ITEM_WSTR(filesystem_encoding);
SET_ITEM_WSTR(filesystem_errors);
SET_ITEM_WSTR(pycache_prefix);
SET_ITEM_WSTR(program_name);
SET_ITEM_INT(parse_argv);
SET_ITEM_WSTRLIST(argv);
SET_ITEM_WSTRLIST(xoptions);
SET_ITEM_WSTRLIST(warnoptions);
SET_ITEM_WSTR(pythonpath_env);
SET_ITEM_WSTR(home);
SET_ITEM_WSTRLIST(module_search_paths);
SET_ITEM_WSTR(executable);
SET_ITEM_WSTR(base_executable);
SET_ITEM_WSTR(prefix);
SET_ITEM_WSTR(base_prefix);
SET_ITEM_WSTR(exec_prefix);
SET_ITEM_WSTR(base_exec_prefix);
SET_ITEM_INT(site_import);
SET_ITEM_INT(bytes_warning);
SET_ITEM_INT(inspect);
SET_ITEM_INT(interactive);
SET_ITEM_INT(optimization_level);
SET_ITEM_INT(parser_debug);
SET_ITEM_INT(write_bytecode);
SET_ITEM_INT(verbose);
SET_ITEM_INT(quiet);
SET_ITEM_INT(user_site_directory);
SET_ITEM_INT(configure_c_stdio);
SET_ITEM_INT(buffered_stdio);
SET_ITEM_WSTR(stdio_encoding);
SET_ITEM_WSTR(stdio_errors);
#ifdef MS_WINDOWS
SET_ITEM_INT(legacy_windows_stdio);
#endif
SET_ITEM_INT(skip_source_first_line);
SET_ITEM_WSTR(run_command);
SET_ITEM_WSTR(run_module);
SET_ITEM_WSTR(run_filename);
SET_ITEM_INT(_install_importlib);
SET_ITEM_WSTR(check_hash_pycs_mode);
SET_ITEM_INT(pathconfig_warnings);
SET_ITEM_INT(_init_main);
return dict;
fail:
Py_DECREF(dict);
return NULL;
#undef FROM_WSTRING
#undef SET_ITEM
#undef SET_ITEM_INT
#undef SET_ITEM_UINT
#undef SET_ITEM_WSTR
#undef SET_ITEM_WSTRLIST
}
static const char*
config_get_env(const PyConfig *config, const char *name)
{
return _Py_GetEnv(config->use_environment, name);
}
/* Get a copy of the environment variable as wchar_t*.
Return 0 on success, but *dest can be NULL.
Return -1 on memory allocation failure. Return -2 on decoding error. */
static PyStatus
config_get_env_dup(PyConfig *config,
wchar_t **dest,
wchar_t *wname, char *name,
const char *decode_err_msg)
{
assert(*dest == NULL);
assert(config->use_environment >= 0);
if (!config->use_environment) {
*dest = NULL;
return _PyStatus_OK();
}
#ifdef MS_WINDOWS
const wchar_t *var = _wgetenv(wname);
if (!var || var[0] == '\0') {
*dest = NULL;
return _PyStatus_OK();
}
return PyConfig_SetString(config, dest, var);
#else
const char *var = getenv(name);
if (!var || var[0] == '\0') {
*dest = NULL;
return _PyStatus_OK();
}
return config_set_bytes_string(config, dest, var, decode_err_msg);
#endif
}
#define CONFIG_GET_ENV_DUP(CONFIG, DEST, WNAME, NAME) \
config_get_env_dup(CONFIG, DEST, WNAME, NAME, "cannot decode " NAME)
static void
config_get_global_vars(PyConfig *config)
{
if (config->_config_init != _PyConfig_INIT_COMPAT) {
/* Python and Isolated configuration ignore global variables */
return;
}
#define COPY_FLAG(ATTR, VALUE) \
if (config->ATTR == -1) { \
config->ATTR = VALUE; \
}
#define COPY_NOT_FLAG(ATTR, VALUE) \
if (config->ATTR == -1) { \
config->ATTR = !(VALUE); \
}
COPY_FLAG(isolated, Py_IsolatedFlag);
COPY_NOT_FLAG(use_environment, Py_IgnoreEnvironmentFlag);
COPY_FLAG(bytes_warning, Py_BytesWarningFlag);
COPY_FLAG(inspect, Py_InspectFlag);
COPY_FLAG(interactive, Py_InteractiveFlag);
COPY_FLAG(optimization_level, Py_OptimizeFlag);
COPY_FLAG(parser_debug, Py_DebugFlag);
COPY_FLAG(verbose, Py_VerboseFlag);
COPY_FLAG(quiet, Py_QuietFlag);
#ifdef MS_WINDOWS
COPY_FLAG(legacy_windows_stdio, Py_LegacyWindowsStdioFlag);
#endif
COPY_NOT_FLAG(pathconfig_warnings, Py_FrozenFlag);
COPY_NOT_FLAG(buffered_stdio, Py_UnbufferedStdioFlag);
COPY_NOT_FLAG(site_import, Py_NoSiteFlag);
COPY_NOT_FLAG(write_bytecode, Py_DontWriteBytecodeFlag);
COPY_NOT_FLAG(user_site_directory, Py_NoUserSiteDirectory);
#undef COPY_FLAG