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#include "Python.h"
#include "pycore_fileutils.h" // _Py_HasFileSystemDefaultEncodeErrors
#include "pycore_getopt.h" // _PyOS_GetOpt()
#include "pycore_initconfig.h" // _PyStatus_OK()
#include "pycore_interp.h" // _PyInterpreterState.runtime
#include "pycore_long.h" // _PY_LONG_MAX_STR_DIGITS_THRESHOLD
#include "pycore_pathconfig.h" // _Py_path_config
#include "pycore_pyerrors.h" // _PyErr_GetRaisedException()
#include "pycore_pylifecycle.h" // _Py_PreInitializeFromConfig()
#include "pycore_pymem.h" // _PyMem_DefaultRawMalloc()
#include "pycore_pyhash.h" // _Py_HashSecret
#include "pycore_pystate.h" // _PyThreadState_GET()
#include "pycore_pystats.h" // _Py_StatsOn()
#include "pycore_sysmodule.h" // _PySys_SetIntMaxStrDigits()
#include "osdefs.h" // DELIM
#include <locale.h> // setlocale()
#include <stdlib.h> // getenv()
#if defined(MS_WINDOWS) || defined(__CYGWIN__)
# ifdef HAVE_IO_H
# include <io.h>
# endif
# ifdef HAVE_FCNTL_H
# include <fcntl.h> // O_BINARY
# endif
#endif
#ifdef __APPLE__
/* Enable system log by default on non-macOS Apple platforms */
# if defined(TARGET_OS_IPHONE) && TARGET_OS_IPHONE
#define USE_SYSTEM_LOGGER_DEFAULT 1;
# else
#define USE_SYSTEM_LOGGER_DEFAULT 0;
# endif
#endif
#include "config_common.h"
/* --- PyConfig setters ------------------------------------------- */
typedef PyObject* (*config_sys_flag_setter) (int value);
static PyObject*
config_sys_flag_long(int value)
{
return PyLong_FromLong(value);
}
static PyObject*
config_sys_flag_not(int value)
{
value = (!value);
return config_sys_flag_long(value);
}
/* --- PyConfig spec ---------------------------------------------- */
typedef enum {
PyConfig_MEMBER_INT = 0,
PyConfig_MEMBER_UINT = 1,
PyConfig_MEMBER_ULONG = 2,
PyConfig_MEMBER_BOOL = 3,
PyConfig_MEMBER_WSTR = 10,
PyConfig_MEMBER_WSTR_OPT = 11,
PyConfig_MEMBER_WSTR_LIST = 12,
} PyConfigMemberType;
typedef enum {
// Option which cannot be get or set by PyConfig_Get() and PyConfig_Set()
PyConfig_MEMBER_INIT_ONLY = 0,
// Option which cannot be set by PyConfig_Set()
PyConfig_MEMBER_READ_ONLY = 1,
// Public option: can be get and set by PyConfig_Get() and PyConfig_Set()
PyConfig_MEMBER_PUBLIC = 2,
} PyConfigMemberVisibility;
typedef struct {
const char *attr;
int flag_index;
config_sys_flag_setter flag_setter;
} PyConfigSysSpec;
typedef struct {
int *ptr;
int not;
} PyConfigGlobalVar;
typedef struct {
const char *name;
size_t offset;
PyConfigMemberType type;
PyConfigMemberVisibility visibility;
PyConfigSysSpec sys;
PyConfigGlobalVar global_var;
} PyConfigSpec;
#define SPEC(MEMBER, TYPE, VISIBILITY, sys, global_var) \
{#MEMBER, offsetof(PyConfig, MEMBER), \
PyConfig_MEMBER_##TYPE, PyConfig_MEMBER_##VISIBILITY, sys, global_var}
#define SYS_ATTR(name) {name, -1, NULL}
#define SYS_FLAG_SETTER(index, setter) {NULL, index, setter}
#define SYS_FLAG(index) SYS_FLAG_SETTER(index, NULL)
#define NO_SYS SYS_ATTR(NULL)
#define GLOBAL(ptr, not) {ptr, not}
#define NO_GLOBAL GLOBAL(NULL, 0)
// Ignore deprecations on global variables such as Py_IsolatedFlag
_Py_COMP_DIAG_PUSH
_Py_COMP_DIAG_IGNORE_DEPR_DECLS
// Update _test_embed_set_config when adding new members
static const PyConfigSpec PYCONFIG_SPEC[] = {
// --- Public options -----------
SPEC(argv, WSTR_LIST, PUBLIC, SYS_ATTR("argv"), NO_GLOBAL),
SPEC(base_exec_prefix, WSTR_OPT, PUBLIC, SYS_ATTR("base_exec_prefix"), NO_GLOBAL),
SPEC(base_executable, WSTR_OPT, PUBLIC, SYS_ATTR("_base_executable"), NO_GLOBAL),
SPEC(base_prefix, WSTR_OPT, PUBLIC, SYS_ATTR("base_prefix"), NO_GLOBAL),
SPEC(bytes_warning, UINT, PUBLIC, SYS_FLAG(9), GLOBAL(&Py_BytesWarningFlag, 0)),
SPEC(cpu_count, INT, PUBLIC, NO_SYS, NO_GLOBAL),
SPEC(exec_prefix, WSTR_OPT, PUBLIC, SYS_ATTR("exec_prefix"), NO_GLOBAL),
SPEC(executable, WSTR_OPT, PUBLIC, SYS_ATTR("executable"), NO_GLOBAL),
SPEC(inspect, BOOL, PUBLIC, SYS_FLAG(1), GLOBAL(&Py_InspectFlag, 0)),
SPEC(int_max_str_digits, UINT, PUBLIC, NO_SYS, NO_GLOBAL),
SPEC(interactive, BOOL, PUBLIC, SYS_FLAG(2), GLOBAL(&Py_InteractiveFlag, 0)),
SPEC(module_search_paths, WSTR_LIST, PUBLIC, SYS_ATTR("path"), NO_GLOBAL),
SPEC(optimization_level, UINT, PUBLIC, SYS_FLAG(3), GLOBAL(&Py_OptimizeFlag, 0)),
SPEC(parser_debug, BOOL, PUBLIC, SYS_FLAG(0), GLOBAL(&Py_DebugFlag, 0)),
SPEC(platlibdir, WSTR, PUBLIC, SYS_ATTR("platlibdir"), NO_GLOBAL),
SPEC(prefix, WSTR_OPT, PUBLIC, SYS_ATTR("prefix"), NO_GLOBAL),
SPEC(pycache_prefix, WSTR_OPT, PUBLIC, SYS_ATTR("pycache_prefix"), NO_GLOBAL),
SPEC(quiet, BOOL, PUBLIC, SYS_FLAG(10), GLOBAL(&Py_QuietFlag, 0)),
SPEC(stdlib_dir, WSTR_OPT, PUBLIC, SYS_ATTR("_stdlib_dir"), NO_GLOBAL),
SPEC(use_environment, BOOL, PUBLIC,
SYS_FLAG_SETTER(7, config_sys_flag_not), GLOBAL(&Py_IgnoreEnvironmentFlag, 1)),
SPEC(verbose, UINT, PUBLIC, SYS_FLAG(8), GLOBAL(&Py_VerboseFlag, 0)),
SPEC(warnoptions, WSTR_LIST, PUBLIC, SYS_ATTR("warnoptions"), NO_GLOBAL),
SPEC(write_bytecode, BOOL, PUBLIC, SYS_FLAG_SETTER(4, config_sys_flag_not),
GLOBAL(&Py_DontWriteBytecodeFlag, 1)),
SPEC(xoptions, WSTR_LIST, PUBLIC, SYS_ATTR("_xoptions"), NO_GLOBAL),
// --- Read-only options -----------
#ifdef Py_STATS
SPEC(_pystats, BOOL, READ_ONLY, NO_SYS, NO_GLOBAL),
#endif
SPEC(buffered_stdio, BOOL, READ_ONLY, NO_SYS,
GLOBAL(&Py_UnbufferedStdioFlag, 1)),
SPEC(check_hash_pycs_mode, WSTR, READ_ONLY, NO_SYS, NO_GLOBAL),
SPEC(code_debug_ranges, BOOL, READ_ONLY, NO_SYS, NO_GLOBAL),
SPEC(configure_c_stdio, BOOL, READ_ONLY, NO_SYS, NO_GLOBAL),
SPEC(dev_mode, BOOL, READ_ONLY, NO_SYS, NO_GLOBAL), // sys.flags.dev_mode
SPEC(dump_refs, BOOL, READ_ONLY, NO_SYS, NO_GLOBAL),
SPEC(dump_refs_file, WSTR_OPT, READ_ONLY, NO_SYS, NO_GLOBAL),
#ifdef Py_GIL_DISABLED
SPEC(enable_gil, INT, READ_ONLY, NO_SYS, NO_GLOBAL),
SPEC(tlbc_enabled, INT, READ_ONLY, NO_SYS, NO_GLOBAL),
#endif
SPEC(faulthandler, BOOL, READ_ONLY, NO_SYS, NO_GLOBAL),
SPEC(filesystem_encoding, WSTR, READ_ONLY, NO_SYS, NO_GLOBAL),
SPEC(filesystem_errors, WSTR, READ_ONLY, NO_SYS, NO_GLOBAL),
SPEC(hash_seed, ULONG, READ_ONLY, NO_SYS, NO_GLOBAL),
SPEC(home, WSTR_OPT, READ_ONLY, NO_SYS, NO_GLOBAL),
SPEC(thread_inherit_context, INT, READ_ONLY, NO_SYS, NO_GLOBAL),
SPEC(context_aware_warnings, INT, READ_ONLY, NO_SYS, NO_GLOBAL),
SPEC(import_time, UINT, READ_ONLY, NO_SYS, NO_GLOBAL),
SPEC(install_signal_handlers, BOOL, READ_ONLY, NO_SYS, NO_GLOBAL),
SPEC(isolated, BOOL, READ_ONLY, NO_SYS, GLOBAL(&Py_IsolatedFlag, 0)), // sys.flags.isolated
#ifdef MS_WINDOWS
SPEC(legacy_windows_stdio, BOOL, READ_ONLY, NO_SYS,
GLOBAL(&Py_LegacyWindowsStdioFlag, 0)),
#endif
SPEC(malloc_stats, BOOL, READ_ONLY, NO_SYS, NO_GLOBAL),
SPEC(orig_argv, WSTR_LIST, READ_ONLY, SYS_ATTR("orig_argv"), NO_GLOBAL),
SPEC(parse_argv, BOOL, READ_ONLY, NO_SYS, NO_GLOBAL),
SPEC(pathconfig_warnings, BOOL, READ_ONLY, NO_SYS,
GLOBAL(&Py_FrozenFlag, 1)),
SPEC(perf_profiling, UINT, READ_ONLY, NO_SYS, NO_GLOBAL),
SPEC(remote_debug, BOOL, READ_ONLY, NO_SYS, NO_GLOBAL),
SPEC(program_name, WSTR, READ_ONLY, NO_SYS, NO_GLOBAL),
SPEC(run_command, WSTR_OPT, READ_ONLY, NO_SYS, NO_GLOBAL),
SPEC(run_filename, WSTR_OPT, READ_ONLY, NO_SYS, NO_GLOBAL),
SPEC(run_module, WSTR_OPT, READ_ONLY, NO_SYS, NO_GLOBAL),
#ifdef Py_DEBUG
SPEC(run_presite, WSTR_OPT, READ_ONLY, NO_SYS, NO_GLOBAL),
#endif
SPEC(safe_path, BOOL, READ_ONLY, NO_SYS, NO_GLOBAL),
SPEC(show_ref_count, BOOL, READ_ONLY, NO_SYS, NO_GLOBAL),
SPEC(site_import, BOOL, READ_ONLY, NO_SYS, GLOBAL(&Py_NoSiteFlag, 1)), // sys.flags.no_site
SPEC(skip_source_first_line, BOOL, READ_ONLY, NO_SYS, NO_GLOBAL),
SPEC(stdio_encoding, WSTR, READ_ONLY, NO_SYS, NO_GLOBAL),
SPEC(stdio_errors, WSTR, READ_ONLY, NO_SYS, NO_GLOBAL),
SPEC(tracemalloc, UINT, READ_ONLY, NO_SYS, NO_GLOBAL),
SPEC(use_frozen_modules, BOOL, READ_ONLY, NO_SYS, NO_GLOBAL),
SPEC(use_hash_seed, BOOL, READ_ONLY, NO_SYS, NO_GLOBAL),
#ifdef __APPLE__
SPEC(use_system_logger, BOOL, READ_ONLY, NO_SYS, NO_GLOBAL),
#endif
SPEC(user_site_directory, BOOL, READ_ONLY, NO_SYS,
GLOBAL(&Py_NoUserSiteDirectory, 1)), // sys.flags.no_user_site
SPEC(warn_default_encoding, BOOL, READ_ONLY, NO_SYS, NO_GLOBAL),
// --- Init-only options -----------
SPEC(_config_init, UINT, INIT_ONLY, NO_SYS, NO_GLOBAL),
SPEC(_init_main, BOOL, INIT_ONLY, NO_SYS, NO_GLOBAL),
SPEC(_install_importlib, BOOL, INIT_ONLY, NO_SYS, NO_GLOBAL),
SPEC(_is_python_build, BOOL, INIT_ONLY, NO_SYS, NO_GLOBAL),
SPEC(module_search_paths_set, BOOL, INIT_ONLY, NO_SYS, NO_GLOBAL),
SPEC(pythonpath_env, WSTR_OPT, INIT_ONLY, NO_SYS, NO_GLOBAL),
SPEC(sys_path_0, WSTR_OPT, INIT_ONLY, NO_SYS, NO_GLOBAL),
// Array terminator
{NULL, 0, 0, 0, NO_SYS},
};
#undef SPEC
#define SPEC(MEMBER, TYPE, VISIBILITY) \
{#MEMBER, offsetof(PyPreConfig, MEMBER), PyConfig_MEMBER_##TYPE, \
PyConfig_MEMBER_##VISIBILITY, NO_SYS}
static const PyConfigSpec PYPRECONFIG_SPEC[] = {
// --- Read-only options -----------
SPEC(allocator, INT, READ_ONLY),
SPEC(coerce_c_locale, BOOL, READ_ONLY),
SPEC(coerce_c_locale_warn, BOOL, READ_ONLY),
SPEC(configure_locale, BOOL, READ_ONLY),
#ifdef MS_WINDOWS
SPEC(legacy_windows_fs_encoding, BOOL, READ_ONLY),
#endif
SPEC(utf8_mode, BOOL, READ_ONLY),
// --- Init-only options -----------
// Members already present in PYCONFIG_SPEC
SPEC(_config_init, INT, INIT_ONLY),
SPEC(dev_mode, BOOL, INIT_ONLY),
SPEC(isolated, BOOL, INIT_ONLY),
SPEC(parse_argv, BOOL, INIT_ONLY),
SPEC(use_environment, BOOL, INIT_ONLY),
// Array terminator
{NULL, 0, 0, 0, NO_SYS},
};
// End of ignoring deprecations on global variables
_Py_COMP_DIAG_POP
#undef SPEC
#undef SYS_ATTR
#undef SYS_FLAG_SETTER
#undef SYS_FLAG
#undef NO_SYS
#undef GLOBAL
#undef NO_GLOBAL
// Forward declarations
static PyObject* config_get(const PyConfig *config, const PyConfigSpec *spec,
int use_sys);
static void initconfig_free_wstr(wchar_t *member);
static void initconfig_free_wstr_list(PyWideStringList *list);
static void initconfig_free_config(const PyConfig *config);
/* --- 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 help message */
/* Lines sorted by option name; keep in sync with usage_envvars* below */
static const char usage_help[] = "\
Options (and corresponding environment variables):\n\
-b : issue warnings about converting bytes/bytearray to str and comparing\n\
bytes/bytearray with str or bytes with int. (-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 : turn on parser debugging output (for experts only, only works on\n\
debug builds); also PYTHONDEBUG=x\n\
-E : ignore PYTHON* environment variables (such as PYTHONPATH)\n\
-h : print this help message and exit (also -? or --help)\n\
-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, -P 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\
-P : don't prepend a potentially unsafe path to sys.path; also\n\
PYTHONSAFEPATH\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=x\n\
-S : don't imply 'import site' on initialization\n\
-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\
--help-env: print help about Python environment variables and exit\n\
--help-xoptions: print help about implementation-specific -X options and exit\n\
--help-all: print complete help information and exit\n\
\n\
Arguments:\n\
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\
";
static const char usage_xoptions[] = "\
The following implementation-specific options are available:\n\
-X context_aware_warnings=[0|1]: if true (1) then the warnings module will\n\
use a context variables; if false (0) then the warnings module will\n\
use module globals, which is not concurrent-safe; set to true for\n\
free-threaded builds and false otherwise; also\n\
PYTHON_CONTEXT_AWARE_WARNINGS\n\
-X cpu_count=N: override the return value of os.cpu_count();\n\
-X cpu_count=default cancels overriding; also PYTHON_CPU_COUNT\n\
-X dev : enable Python Development Mode; also PYTHONDEVMODE\n\
-X disable-remote-debug: disable remote debugging; also PYTHON_DISABLE_REMOTE_DEBUG\n\
-X faulthandler: dump the Python traceback on fatal errors;\n\
also PYTHONFAULTHANDLER\n\
-X frozen_modules=[on|off]: whether to use frozen modules; the default is \"on\"\n\
for installed Python and \"off\" for a local build;\n\
also PYTHON_FROZEN_MODULES\n\
"
#ifdef Py_GIL_DISABLED
"-X gil=[0|1]: enable (1) or disable (0) the GIL; also PYTHON_GIL\n"
#endif
"\
-X importtime[=2]: show how long each import takes; use -X importtime=2 to\n\
log imports of already-loaded modules; also PYTHONPROFILEIMPORTTIME\n\
-X int_max_str_digits=N: limit the size of int<->str conversions;\n\
0 disables the limit; also PYTHONINTMAXSTRDIGITS\n\
-X no_debug_ranges: don't include extra location information in code objects;\n\
also PYTHONNODEBUGRANGES\n\
-X perf: support the Linux \"perf\" profiler; also PYTHONPERFSUPPORT=1\n\
-X perf_jit: support the Linux \"perf\" profiler with DWARF support;\n\
also PYTHON_PERF_JIT_SUPPORT=1\n\
"
#ifdef Py_DEBUG
"-X presite=MOD: import this module before site; also PYTHON_PRESITE\n"
#endif
"\
-X pycache_prefix=PATH: write .pyc files to a parallel tree instead of to the\n\
code tree; also PYTHONPYCACHEPREFIX\n\
"
#ifdef Py_STATS
"-X pystats: enable pystats collection at startup; also PYTHONSTATS\n"
#endif
"\
-X showrefcount: output the total reference count and number of used\n\
memory blocks when the program finishes or after each statement in\n\
the interactive interpreter; only works on debug builds\n\
-X thread_inherit_context=[0|1]: enable (1) or disable (0) threads inheriting\n\
context vars by default; enabled by default in the free-threaded\n\
build and disabled otherwise; also PYTHON_THREAD_INHERIT_CONTEXT\n\
"
#ifdef Py_GIL_DISABLED
"-X tlbc=[0|1]: enable (1) or disable (0) thread-local bytecode. Also\n\
PYTHON_TLBC\n"
#endif
"\
-X tracemalloc[=N]: trace Python memory allocations; N sets a traceback limit\n\
of N frames (default: 1); also PYTHONTRACEMALLOC=N\n\
-X utf8[=0|1]: enable (1) or disable (0) UTF-8 mode; also PYTHONUTF8\n\
-X warn_default_encoding: enable opt-in EncodingWarning for 'encoding=None';\n\
also PYTHONWARNDEFAULTENCODING\
";
/* Envvars that don't have equivalent command-line options are listed first */
static const char usage_envvars[] =
"Environment variables that change behavior:\n"
"PYTHONASYNCIODEBUG: enable asyncio debug mode\n"
"PYTHON_BASIC_REPL: use the traditional parser-based REPL\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\n"
" choice.\n"
"PYTHONCASEOK : ignore case in 'import' statements (Windows)\n"
"PYTHONCOERCECLOCALE: if this variable is set to 0, it disables the locale\n"
" coercion behavior. Use PYTHONCOERCECLOCALE=warn to request\n"
" display of locale coercion and locale compatibility warnings\n"
" on stderr.\n"
"PYTHON_COLORS : if this variable is set to 1, the interpreter will colorize\n"
" various kinds of output. Setting it to 0 deactivates\n"
" this behavior.\n"
#ifdef Py_TRACE_REFS
"PYTHONDUMPREFS : dump objects and reference counts still alive after shutdown\n"
"PYTHONDUMPREFSFILE: dump objects and reference counts to the specified file\n"
#endif
#ifdef __APPLE__
"PYTHONEXECUTABLE: set sys.argv[0] to this value (macOS only)\n"
#endif
"PYTHONHASHSEED : if this variable is set to 'random', a random value is used\n"
" to seed the hashes of str and bytes objects. It can also be\n"
" set to an integer in the range [0,4294967295] to get hash\n"
" values with a predictable seed.\n"
"PYTHON_HISTORY : the location of a .python_history file.\n"
"PYTHONHOME : alternate <prefix> directory (or <prefix>%lc<exec_prefix>).\n"
" The default module search path uses %s.\n"
"PYTHONIOENCODING: encoding[:errors] used for stdin/stdout/stderr\n"
#ifdef MS_WINDOWS
"PYTHONLEGACYWINDOWSFSENCODING: use legacy \"mbcs\" encoding for file system\n"
"PYTHONLEGACYWINDOWSSTDIO: use legacy Windows stdio\n"
#endif
"PYTHONMALLOC : set the Python memory allocators and/or install debug hooks\n"
" on Python memory allocators. Use PYTHONMALLOC=debug to\n"
" install debug hooks.\n"
"PYTHONMALLOCSTATS: print memory allocator statistics\n"
"PYTHONPATH : '%lc'-separated list of directories prefixed to the\n"
" default module search path. The result is sys.path.\n"
"PYTHONPLATLIBDIR: override sys.platlibdir\n"
"PYTHONSTARTUP : file executed on interactive startup (no default)\n"
"PYTHONUSERBASE : defines the user base directory (site.USER_BASE)\n"
"\n"
"These variables have equivalent command-line options (see --help for details):\n"
"PYTHON_CONTEXT_AWARE_WARNINGS: if true (1), enable thread-safe warnings\n"
" module behaviour (-X context_aware_warnings)\n"
"PYTHON_CPU_COUNT: override the return value of os.cpu_count() (-X cpu_count)\n"
"PYTHONDEBUG : enable parser debug mode (-d)\n"
"PYTHONDEVMODE : enable Python Development Mode (-X dev)\n"
"PYTHONDONTWRITEBYTECODE: don't write .pyc files (-B)\n"
"PYTHONFAULTHANDLER: dump the Python traceback on fatal errors (-X faulthandler)\n"
"PYTHON_FROZEN_MODULES: whether to use frozen modules; the default is \"on\"\n"
" for installed Python and \"off\" for a local build\n"
" (-X frozen_modules)\n"
#ifdef Py_GIL_DISABLED
"PYTHON_GIL : when set to 0, disables the GIL (-X gil)\n"
#endif
"PYTHONINSPECT : inspect interactively after running script (-i)\n"
"PYTHONINTMAXSTRDIGITS: limit the size of int<->str conversions;\n"
" 0 disables the limit (-X int_max_str_digits=N)\n"
"PYTHONNODEBUGRANGES: don't include extra location information in code objects\n"
" (-X no_debug_ranges)\n"
"PYTHONNOUSERSITE: disable user site directory (-s)\n"
"PYTHONOPTIMIZE : enable level 1 optimizations (-O)\n"
"PYTHON_PERF_JIT_SUPPORT: enable Linux \"perf\" profiler support with JIT\n"
" (-X perf_jit)\n"
"PYTHONPERFSUPPORT: support the Linux \"perf\" profiler (-X perf)\n"
#ifdef Py_DEBUG
"PYTHON_PRESITE: import this module before site (-X presite)\n"
#endif
"PYTHONPROFILEIMPORTTIME: show how long each import takes (-X importtime)\n"
"PYTHONPYCACHEPREFIX: root directory for bytecode cache (pyc) files\n"
" (-X pycache_prefix)\n"
"PYTHONSAFEPATH : don't prepend a potentially unsafe path to sys.path.\n"
#ifdef Py_STATS
"PYTHONSTATS : turns on statistics gathering (-X pystats)\n"
#endif
"PYTHON_THREAD_INHERIT_CONTEXT: if true (1), threads inherit context vars\n"
" (-X thread_inherit_context)\n"
#ifdef Py_GIL_DISABLED
"PYTHON_TLBC : when set to 0, disables thread-local bytecode (-X tlbc)\n"
#endif
"PYTHONTRACEMALLOC: trace Python memory allocations (-X tracemalloc)\n"
"PYTHONUNBUFFERED: disable stdout/stderr buffering (-u)\n"
"PYTHONUTF8 : control the UTF-8 mode (-X utf8)\n"
"PYTHONVERBOSE : trace import statements (-v)\n"
"PYTHONWARNDEFAULTENCODING: enable opt-in EncodingWarning for 'encoding=None'\n"
" (-X warn_default_encoding)\n"
"PYTHONWARNINGS : warning control (-W)\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; /* Previously, was used by Py_FdIsInteractive() */
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)
{
_Py_COMP_DIAG_PUSH
_Py_COMP_DIAG_IGNORE_DEPR_DECLS
PyObject *dict, *obj;
dict = PyDict_New();
if (dict == NULL) {
return NULL;
}
#define SET_ITEM(KEY, EXPR) \
do { \
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(VAR) \
SET_ITEM(#VAR, PyLong_FromLong(VAR))
#define FROM_STRING(STR) \
((STR != NULL) ? \
PyUnicode_FromString(STR) \
: Py_NewRef(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
_Py_COMP_DIAG_POP
}
char*
Py_GETENV(const char *name)
{
_Py_COMP_DIAG_PUSH
_Py_COMP_DIAG_IGNORE_DEPR_DECLS
if (Py_IgnoreEnvironmentFlag) {
return NULL;
}
return getenv(name);
_Py_COMP_DIAG_POP
}
/* --- PyStatus ----------------------------------------------- */
PyStatus PyStatus_Ok(void)
{ return _PyStatus_OK(); }
PyStatus PyStatus_Error(const char *err_msg)
{
assert(err_msg != NULL);
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); }
void
_PyErr_SetFromPyStatus(PyStatus status)
{
if (!_PyStatus_IS_ERROR(status)) {
PyErr_Format(PyExc_SystemError,
"_PyErr_SetFromPyStatus() status is not an error");
return;
}
const char *err_msg = status.err_msg;
if (err_msg == NULL || strlen(err_msg) == 0) {
PyErr_Format(PyExc_SystemError,
"_PyErr_SetFromPyStatus() status has no error message");
return;
}
if (strcmp(err_msg, _PyStatus_NO_MEMORY_ERRMSG) == 0) {
PyErr_NoMemory();
return;
}
const char *func = status.func;
if (func) {
PyErr_Format(PyExc_RuntimeError, "%s: %s", func, err_msg);
}
else {
PyErr_Format(PyExc_RuntimeError, "%s", err_msg);
}
}
/* --- 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 */
static void
_PyWideStringList_ClearEx(PyWideStringList *list,
bool use_default_allocator)
{
assert(_PyWideStringList_CheckConsistency(list));
for (Py_ssize_t i=0; i < list->length; i++) {
if (use_default_allocator) {
_PyMem_DefaultRawFree(list->items[i]);
}
else {
PyMem_RawFree(list->items[i]);
}
}
if (use_default_allocator) {
_PyMem_DefaultRawFree(list->items);
}
else {
PyMem_RawFree(list->items);
}
list->length = 0;
list->items = NULL;
}
void
_PyWideStringList_Clear(PyWideStringList *list)
{
_PyWideStringList_ClearEx(list, false);
}
static int
_PyWideStringList_CopyEx(PyWideStringList *list,
const PyWideStringList *list2,
bool use_default_allocator)
{
assert(_PyWideStringList_CheckConsistency(list));
assert(_PyWideStringList_CheckConsistency(list2));
if (list2->length == 0) {
_PyWideStringList_ClearEx(list, use_default_allocator);
return 0;
}
PyWideStringList copy = _PyWideStringList_INIT;
size_t size = list2->length * sizeof(list2->items[0]);
if (use_default_allocator) {
copy.items = _PyMem_DefaultRawMalloc(size);
}
else {
copy.items = PyMem_RawMalloc(size);
}
if (copy.items == NULL) {
return -1;
}
for (Py_ssize_t i=0; i < list2->length; i++) {
wchar_t *item;
if (use_default_allocator) {
item = _PyMem_DefaultRawWcsdup(list2->items[i]);
}
else {
item = _PyMem_RawWcsdup(list2->items[i]);
}
if (item == NULL) {
_PyWideStringList_ClearEx(©, use_default_allocator);
return -1;
}
copy.items[i] = item;
copy.length = i + 1;
}
_PyWideStringList_ClearEx(list, use_default_allocator);
*list = copy;
return 0;
}
int
_PyWideStringList_Copy(PyWideStringList *list, const PyWideStringList *list2)
{
return _PyWideStringList_CopyEx(list, list2, false);
}
PyStatus
PyWideStringList_Insert(PyWideStringList *list,
Py_ssize_t index, const wchar_t *item)
{
Py_ssize_t len = list->length;
if (len == PY_SSIZE_T_MAX) {
/* length+1 would overflow */
return _PyStatus_NO_MEMORY();
}
if (index < 0) {
return _PyStatus_ERR("PyWideStringList_Insert index must be >= 0");
}
if (index > len) {
index = len;
}
wchar_t *item2 = _PyMem_RawWcsdup(item);
if (item2 == NULL) {
return _PyStatus_NO_MEMORY();
}
size_t size = (len + 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();
}
if (index < len) {
memmove(&items2[index + 1],
&items2[index],
(len - index) * sizeof(items2[0]));
}
items2[index] = item2;
list->items = items2;
list->length++;
return _PyStatus_OK();
}
PyStatus
PyWideStringList_Append(PyWideStringList *list, const wchar_t *item)
{
return PyWideStringList_Insert(list, list->length, item);
}
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;
}
static PyObject*
_PyWideStringList_AsTuple(const PyWideStringList *list)
{
assert(_PyWideStringList_CheckConsistency(list));
PyObject *tuple = PyTuple_New(list->length);
if (tuple == 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(tuple);
return NULL;
}
PyTuple_SET_ITEM(tuple, i, item);
}
return tuple;
}
/* --- Py_GetArgcArgv() ------------------------------------------- */
void
_Py_ClearArgcArgv(void)
{
_PyWideStringList_ClearEx(&_PyRuntime.orig_argv, true);
}
static int
_Py_SetArgcArgv(Py_ssize_t argc, wchar_t * const *argv)
{
const PyWideStringList argv_list = {.length = argc, .items = (wchar_t **)argv};
// XXX _PyRuntime.orig_argv only gets cleared by Py_Main(),
// so it currently leaks for embedders.
return _PyWideStringList_CopyEx(&_PyRuntime.orig_argv, &argv_list, true);
}
// _PyConfig_Write() calls _Py_SetArgcArgv() with PyConfig.orig_argv.
void
Py_GetArgcArgv(int *argc, wchar_t ***argv)
{
*argc = (int)_PyRuntime.orig_argv.length;
*argv = _PyRuntime.orig_argv.items;
}
/* --- PyConfig ---------------------------------------------- */
#define MAX_HASH_SEED 4294967295UL
#ifndef NDEBUG
static int
config_check_consistency(const PyConfig *config)
{
/* Check config consistency */
assert(config->isolated >= 0);
assert(config->use_environment >= 0);
assert(config->dev_mode >= 0);
assert(config->install_signal_handlers >= 0);
assert(config->use_hash_seed >= 0);
assert(config->hash_seed <= MAX_HASH_SEED);
assert(config->faulthandler >= 0);
assert(config->tracemalloc >= 0);
assert(config->import_time >= 0);
assert(config->code_debug_ranges >= 0);
assert(config->show_ref_count >= 0);
assert(config->dump_refs >= 0);
assert(config->malloc_stats >= 0);
assert(config->site_import >= 0);
assert(config->bytes_warning >= 0);
assert(config->warn_default_encoding >= 0);
assert(config->inspect >= 0);
assert(config->interactive >= 0);
assert(config->optimization_level >= 0);
assert(config->parser_debug >= 0);
assert(config->write_bytecode >= 0);
assert(config->verbose >= 0);
assert(config->quiet >= 0);
assert(config->user_site_directory >= 0);
assert(config->parse_argv >= 0);
assert(config->configure_c_stdio >= 0);
assert(config->buffered_stdio >= 0);
assert(_PyWideStringList_CheckConsistency(&config->orig_argv));
assert(_PyWideStringList_CheckConsistency(&config->argv));
/* sys.argv must be non-empty: empty argv is replaced with [''] */
assert(config->argv.length >= 1);
assert(_PyWideStringList_CheckConsistency(&config->xoptions));
assert(_PyWideStringList_CheckConsistency(&config->warnoptions));
assert(_PyWideStringList_CheckConsistency(&config->module_search_paths));
assert(config->module_search_paths_set >= 0);
assert(config->filesystem_encoding != NULL);
assert(config->filesystem_errors != NULL);
assert(config->stdio_encoding != NULL);
assert(config->stdio_errors != NULL);
#ifdef MS_WINDOWS
assert(config->legacy_windows_stdio >= 0);
#endif
/* -c and -m options are exclusive */
assert(!(config->run_command != NULL && config->run_module != NULL));
assert(config->check_hash_pycs_mode != NULL);
assert(config->_install_importlib >= 0);
assert(config->pathconfig_warnings >= 0);
assert(config->_is_python_build >= 0);
assert(config->safe_path >= 0);
assert(config->int_max_str_digits >= 0);
// cpu_count can be -1 if the user doesn't override it.
assert(config->cpu_count != 0);
// config->use_frozen_modules is initialized later
// by _PyConfig_InitImportConfig().
assert(config->thread_inherit_context >= 0);
assert(config->context_aware_warnings >= 0);
#ifdef __APPLE__
assert(config->use_system_logger >= 0);
#endif
#ifdef Py_STATS
assert(config->_pystats >= 0);
#endif
return 1;
}
#endif
/* 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;