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5034 lines (4363 loc) · 140 KB
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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;
} PyConfigSpec;
#define SPEC(MEMBER, TYPE, VISIBILITY, sys) \
{#MEMBER, offsetof(PyConfig, MEMBER), \
PyConfig_MEMBER_##TYPE, PyConfig_MEMBER_##VISIBILITY, sys}
#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)
// Update _test_embed_set_config when adding new members
static const PyConfigSpec PYCONFIG_SPEC[] = {
// --- Public options -----------
SPEC(argv, WSTR_LIST, PUBLIC, SYS_ATTR("argv")),
SPEC(base_exec_prefix, WSTR_OPT, PUBLIC, SYS_ATTR("base_exec_prefix")),
SPEC(base_executable, WSTR_OPT, PUBLIC, SYS_ATTR("_base_executable")),
SPEC(base_prefix, WSTR_OPT, PUBLIC, SYS_ATTR("base_prefix")),
SPEC(bytes_warning, UINT, PUBLIC, SYS_FLAG(9)),
SPEC(cpu_count, INT, PUBLIC, NO_SYS),
SPEC(lazy_imports, INT, PUBLIC, NO_SYS),
SPEC(exec_prefix, WSTR_OPT, PUBLIC, SYS_ATTR("exec_prefix")),
SPEC(executable, WSTR_OPT, PUBLIC, SYS_ATTR("executable")),
SPEC(inspect, BOOL, PUBLIC, SYS_FLAG(1)),
SPEC(int_max_str_digits, UINT, PUBLIC, NO_SYS),
SPEC(interactive, BOOL, PUBLIC, SYS_FLAG(2)),
SPEC(module_search_paths, WSTR_LIST, PUBLIC, SYS_ATTR("path")),
SPEC(optimization_level, UINT, PUBLIC, SYS_FLAG(3)),
SPEC(parser_debug, BOOL, PUBLIC, SYS_FLAG(0)),
SPEC(platlibdir, WSTR, PUBLIC, SYS_ATTR("platlibdir")),
SPEC(prefix, WSTR_OPT, PUBLIC, SYS_ATTR("prefix")),
SPEC(pycache_prefix, WSTR_OPT, PUBLIC, SYS_ATTR("pycache_prefix")),
SPEC(quiet, BOOL, PUBLIC, SYS_FLAG(10)),
SPEC(stdlib_dir, WSTR_OPT, PUBLIC, SYS_ATTR("_stdlib_dir")),
SPEC(use_environment, BOOL, PUBLIC,
SYS_FLAG_SETTER(7, config_sys_flag_not)),
SPEC(verbose, UINT, PUBLIC, SYS_FLAG(8)),
SPEC(warnoptions, WSTR_LIST, PUBLIC, SYS_ATTR("warnoptions")),
SPEC(write_bytecode, BOOL, PUBLIC, SYS_FLAG_SETTER(4, config_sys_flag_not)),
SPEC(xoptions, WSTR_LIST, PUBLIC, SYS_ATTR("_xoptions")),
// --- Read-only options -----------
#ifdef Py_STATS
SPEC(_pystats, BOOL, READ_ONLY, NO_SYS),
#endif
SPEC(buffered_stdio, BOOL, READ_ONLY, NO_SYS),
SPEC(check_hash_pycs_mode, WSTR, READ_ONLY, NO_SYS),
SPEC(code_debug_ranges, BOOL, READ_ONLY, NO_SYS),
SPEC(configure_c_stdio, BOOL, READ_ONLY, NO_SYS),
SPEC(dev_mode, BOOL, READ_ONLY, NO_SYS), // sys.flags.dev_mode
SPEC(dump_refs, BOOL, READ_ONLY, NO_SYS),
SPEC(dump_refs_file, WSTR_OPT, READ_ONLY, NO_SYS),
#ifdef Py_GIL_DISABLED
SPEC(enable_gil, INT, READ_ONLY, NO_SYS),
SPEC(tlbc_enabled, INT, READ_ONLY, NO_SYS),
#endif
SPEC(faulthandler, BOOL, READ_ONLY, NO_SYS),
SPEC(filesystem_encoding, WSTR, READ_ONLY, NO_SYS),
SPEC(filesystem_errors, WSTR, READ_ONLY, NO_SYS),
SPEC(hash_seed, ULONG, READ_ONLY, NO_SYS),
SPEC(home, WSTR_OPT, READ_ONLY, NO_SYS),
SPEC(thread_inherit_context, INT, READ_ONLY, NO_SYS),
SPEC(context_aware_warnings, INT, READ_ONLY, NO_SYS),
SPEC(import_time, UINT, READ_ONLY, NO_SYS),
SPEC(install_signal_handlers, BOOL, READ_ONLY, NO_SYS),
SPEC(isolated, BOOL, READ_ONLY, NO_SYS), // sys.flags.isolated
#ifdef MS_WINDOWS
SPEC(legacy_windows_stdio, BOOL, READ_ONLY, NO_SYS),
#endif
SPEC(malloc_stats, BOOL, READ_ONLY, NO_SYS),
SPEC(pymalloc_hugepages, BOOL, READ_ONLY, NO_SYS),
SPEC(orig_argv, WSTR_LIST, READ_ONLY, SYS_ATTR("orig_argv")),
SPEC(parse_argv, BOOL, READ_ONLY, NO_SYS),
SPEC(pathconfig_warnings, BOOL, READ_ONLY, NO_SYS),
SPEC(perf_profiling, UINT, READ_ONLY, NO_SYS),
SPEC(remote_debug, BOOL, READ_ONLY, NO_SYS),
SPEC(program_name, WSTR, READ_ONLY, NO_SYS),
SPEC(run_command, WSTR_OPT, READ_ONLY, NO_SYS),
SPEC(run_filename, WSTR_OPT, READ_ONLY, NO_SYS),
SPEC(run_module, WSTR_OPT, READ_ONLY, NO_SYS),
#ifdef Py_DEBUG
SPEC(run_presite, WSTR_OPT, READ_ONLY, NO_SYS),
#endif
SPEC(safe_path, BOOL, READ_ONLY, NO_SYS),
SPEC(show_ref_count, BOOL, READ_ONLY, NO_SYS),
SPEC(site_import, BOOL, READ_ONLY, NO_SYS), // sys.flags.no_site
SPEC(skip_source_first_line, BOOL, READ_ONLY, NO_SYS),
SPEC(stdio_encoding, WSTR_OPT, READ_ONLY, NO_SYS),
SPEC(stdio_errors, WSTR, READ_ONLY, NO_SYS),
SPEC(tracemalloc, UINT, READ_ONLY, NO_SYS),
SPEC(use_frozen_modules, BOOL, READ_ONLY, NO_SYS),
SPEC(use_hash_seed, BOOL, READ_ONLY, NO_SYS),
#ifdef __APPLE__
SPEC(use_system_logger, BOOL, READ_ONLY, NO_SYS),
#endif
SPEC(user_site_directory, BOOL, READ_ONLY, NO_SYS), // sys.flags.no_user_site
SPEC(warn_default_encoding, BOOL, READ_ONLY, NO_SYS),
// --- Init-only options -----------
SPEC(_config_init, UINT, INIT_ONLY, NO_SYS),
SPEC(_init_main, BOOL, INIT_ONLY, NO_SYS),
SPEC(_install_importlib, BOOL, INIT_ONLY, NO_SYS),
SPEC(_is_python_build, BOOL, INIT_ONLY, NO_SYS),
SPEC(module_search_paths_set, BOOL, INIT_ONLY, NO_SYS),
SPEC(pythonpath_env, WSTR_OPT, INIT_ONLY, NO_SYS),
SPEC(sys_path_0, WSTR_OPT, INIT_ONLY, NO_SYS),
SPEC(_deferred_cmdline_option, INT, INIT_ONLY, NO_SYS),
// 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},
};
#undef SPEC
#undef SYS_ATTR
#undef SYS_FLAG_SETTER
#undef SYS_FLAG
#undef NO_SYS
// 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 --------------------------------------- */
/*
* Help text markup (matching Lib/_colorize.py Argparse theme).
*
* Color spans, #X{...} where "}" resets to default color:
* #b{...} label bold yellow
* #B{...} summary label yellow
* #E{...} env var (primary) bold cyan
* #e{...} env var reference cyan
* #h{...} heading bold blue
* #L{...} long option bold cyan
* #s{...} short option bold green
* #S{...} summary short opt green
*
* Runtime substitutions (no "{" follows):
* #P program name (bold magenta)
* #D path separator (DELIM)
* #H PYTHONHOMEHELP default search path
*
* fprint_help() walks the string, expanding color codes only when colorize=1
* and substituting runtime values regardless.
*/
#if defined(MS_WINDOWS)
# define PYTHONHOMEHELP "<prefix>\\python{major}{minor}"
#else
# define PYTHONHOMEHELP "<prefix>/lib/pythonX.X"
#endif
/* Determine if we can emit ANSI color codes on the given stream.
* Logic mirrors Lib/_colorize.py:can_colorize(). */
static int
_Py_can_colorize(FILE *f)
{
const char *env;
env = Py_GETENV("PYTHON_COLORS");
if (env) {
if (strcmp(env, "0") == 0) {
return 0;
}
if (strcmp(env, "1") == 0) {
return 1;
}
}
if (getenv("NO_COLOR")) {
return 0;
}
if (getenv("FORCE_COLOR")) {
return 1;
}
env = getenv("TERM");
if (env && strcmp(env, "dumb") == 0) {
return 0;
}
#if defined(MS_WINDOWS) && defined(HAVE_WINDOWS_CONSOLE_IO)
{
DWORD mode = 0;
DWORD nStdHandle = (f == stderr) ? STD_ERROR_HANDLE
: STD_OUTPUT_HANDLE;
HANDLE handle = GetStdHandle(nStdHandle);
if (!GetConsoleMode(handle, &mode)
|| !(mode & ENABLE_VIRTUAL_TERMINAL_PROCESSING))
{
return 0;
}
}
#endif
return isatty(fileno(f));
}
/* Walk help text, expanding markup:
* #X{...} color span (only emitted when colorize=1; '}' resets).
* #X runtime substitution (program name, DELIM, PYTHONHOMEHELP).
* See the markup table above the macro/comment block. */
static void
fprint_help(FILE *f, const char *text, int colorize, const wchar_t *program)
{
for (const char *p = text; *p; ) {
if (*p == '#' && p[1]) {
char code = p[1];
if (p[2] == '{') {
/* Color span open */
const char *seq = NULL;
switch (code) {
case 'h': seq = "\x1b[1;34m"; break; // heading
case 'E': seq = "\x1b[1;36m"; break; // env var primary
case 'e': seq = "\x1b[36m"; break; // env var reference
case 'L': seq = "\x1b[1;36m"; break; // long option
case 'b': seq = "\x1b[1;33m"; break; // label
case 'B': seq = "\x1b[33m"; break; // summary label
case 's': seq = "\x1b[1;32m"; break; // short option
case 'S': seq = "\x1b[32m"; break; // summary short option
}
if (colorize && seq) fputs(seq, f);
p += 3; // skip "#X{"
continue;
}
/* Runtime substitution */
switch (code) {
case 'P': // program name with bold magenta
if (colorize) fputs("\x1b[1;35m", f);
if (program) fprintf(f, "%ls", program);
if (colorize) fputs("\x1b[0m", f);
break;
case 'D':
fputc((char)DELIM, f);
break;
case 'H':
fputs(PYTHONHOMEHELP, f);
break;
default: // unknown: emit literally
fputc('#', f);
fputc(code, f);
break;
}
p += 2; // skip "#X"
continue;
}
if (*p == '}') {
if (colorize) fputs("\x1b[0m", f);
p++;
continue;
}
fputc(*p++, f);
}
}
/* Short usage message */
static const char usage_line[] =
"#h{usage:} #P [#S{option}] #S{...} "
"[#S{-c} #B{cmd} | #S{-m} #B{mod} | #S{file} | #S{-}] "
"[#S{arg}] #S{...}\n"
;
/* Long help message */
/* Lines sorted by option name; keep in sync with usage_envvars* below */
static const char usage_help[] =
"#h{Options (and corresponding environment variables):}\n"
"#s{-b} : issue warnings about converting bytes/bytearray to str and comparing\n"
" bytes/bytearray with str or bytes with int. (#S{-bb}: issue errors)\n"
" deprecated since 3.15 and will become no-op in 3.17.\n"
"#s{-B} : don't write .pyc files on import; also #e{PYTHONDONTWRITEBYTECODE}#B{=x}\n"
"#s{-c} #b{cmd} : program passed in as string (terminates option list)\n"
"#s{-d} : turn on parser debugging output (for experts only, only works on\n"
" debug builds); also #e{PYTHONDEBUG}#B{=x}\n"
"#s{-E} : ignore #e{PYTHON*} environment variables (such as #e{PYTHONPATH})\n"
"#s{-h} : print this help message and exit (also #S{-?} or #e{--help})\n"
"#s{-i} : inspect interactively after running script; forces a prompt even\n"
" if stdin does not appear to be a terminal; also #e{PYTHONINSPECT}#B{=x}\n"
"#s{-I} : isolate Python from the user's environment (implies #S{-E}, #S{-P} and #S{-s})\n"
"#s{-m} #b{mod} : run library module as a script (terminates option list)\n"
"#s{-O} : remove assert and __debug__-dependent statements; add .opt-1 before\n"
" .pyc extension; also #e{PYTHONOPTIMIZE}#B{=x}\n"
"#s{-OO} : do #S{-O} changes and also discard docstrings; add .opt-2 before\n"
" .pyc extension\n"
"#s{-P} : don't prepend a potentially unsafe path to sys.path; also\n"
" #e{PYTHONSAFEPATH}\n"
"#s{-q} : don't print version and copyright messages on interactive startup\n"
"#s{-s} : don't add user site directory to sys.path; also #e{PYTHONNOUSERSITE}#B{=x}\n"
"#s{-S} : don't imply 'import site' on initialization\n"
"#s{-u} : force the stdout and stderr streams to be unbuffered;\n"
" this option has no effect on stdin; also #e{PYTHONUNBUFFERED}#B{=x}\n"
"#s{-v} : verbose (trace import statements); also #e{PYTHONVERBOSE}#B{=x}\n"
" can be supplied multiple times to increase verbosity\n"
"#s{-V} : print the Python version number and exit (also #e{--version})\n"
" when given twice, print more information about the build\n"
"#s{-W} #b{arg} : warning control; #B{arg} is action:message:category:module:lineno\n"
" also #e{PYTHONWARNINGS}#B{=arg}\n"
"#s{-x} : skip first line of source, allowing use of non-Unix forms of #!cmd\n"
"#s{-X} #b{opt} : set implementation-specific option\n"
"#L{--check-hash-based-pycs} #b{always|default|never}:\n"
" control how Python invalidates hash-based .pyc files\n"
"#L{--help-env}: print help about Python environment variables and exit\n"
"#L{--help-xoptions}: print help about implementation-specific #S{-X} options and exit\n"
"#L{--help-all}: print complete help information and exit\n"
"\n"
"#h{Arguments:}\n"
"#s{file} : program read from script file\n"
"#s{-} : program read from stdin (default; interactive mode if a tty)\n"
"#s{arg} #b{...}: arguments passed to program in sys.argv[1:]\n"
;
static const char usage_xoptions[] =
"#h{The following implementation-specific options are available:}\n"
"#s{-X} #L{context_aware_warnings}#b{=[0|1]}: if true (#B{1}) then the warnings module will\n"
" use a context variables; if false (#B{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"
" #e{PYTHON_CONTEXT_AWARE_WARNINGS}\n"
"#s{-X} #L{cpu_count}#b{=N}: override the return value of os.cpu_count();\n"
" #S{-X} #e{cpu_count}#B{=default} cancels overriding; also #e{PYTHON_CPU_COUNT}\n"
"#s{-X} #L{dev} : enable Python Development Mode; also #e{PYTHONDEVMODE}\n"
"#s{-X} #L{disable-remote-debug}: disable remote debugging; also #e{PYTHON_DISABLE_REMOTE_DEBUG}\n"
"#s{-X} #L{faulthandler}: dump the Python traceback on fatal errors;\n"
" also #e{PYTHONFAULTHANDLER}\n"
"#s{-X} #L{frozen_modules}#b{=[on|off]}: whether to use frozen modules; the default is \"#B{on}\"\n"
" for installed Python and \"#B{off}\" for a local build;\n"
" also #e{PYTHON_FROZEN_MODULES}\n"
#ifdef Py_GIL_DISABLED
"#s{-X} #L{gil}#b{=[0|1]}: enable (#B{1}) or disable (#B{0}) the GIL; also #e{PYTHON_GIL}\n"
#endif
"#s{-X} #L{importtime}#b{[=2]}: show how long each import takes; use #S{-X} #e{importtime}#B{=2} to\n"
" log imports of already-loaded modules; also #e{PYTHONPROFILEIMPORTTIME}\n"
"#s{-X} #L{int_max_str_digits}#b{=N}: limit the size of int<->str conversions;\n"
" 0 disables the limit; also #e{PYTHONINTMAXSTRDIGITS}\n"
"#s{-X} #L{lazy_imports}#b{=[all|normal]}: control global lazy imports;\n"
" default is #B{normal}; also #e{PYTHON_LAZY_IMPORTS}\n"
"#s{-X} #L{no_debug_ranges}: don't include extra location information in code objects;\n"
" also #e{PYTHONNODEBUGRANGES}\n"
"#s{-X} #L{pathconfig_warnings}#b{=[0|1]}: if true (#B{1}) then path configuration is allowed\n"
" to log warnings into stderr; if false (#B{0}) suppress these warnings;\n"
" set to true by default; also #e{PYTHON_PATHCONFIG_WARNINGS}\n"
"#s{-X} #L{perf}: support the Linux \"perf\" profiler; also #e{PYTHONPERFSUPPORT}#B{=1}\n"
"#s{-X} #L{perf_jit}: support the Linux \"perf\" profiler with DWARF support;\n"
" also #e{PYTHON_PERF_JIT_SUPPORT}#B{=1}\n"
#ifdef Py_DEBUG
"#s{-X} #L{presite}#b{=MOD}: import this module before site; also #e{PYTHON_PRESITE}\n"
#endif
"#s{-X} #L{pycache_prefix}#b{=PATH}: write .pyc files to a parallel tree instead of to the\n"
" code tree; also #e{PYTHONPYCACHEPREFIX}\n"
#ifdef Py_STATS
"#s{-X} #L{pystats}: enable pystats collection at startup; also #e{PYTHONSTATS}\n"
#endif
"#s{-X} #L{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"
"#s{-X} #L{thread_inherit_context}#b{=[0|1]}: enable (#B{1}) or disable (#B{0}) threads inheriting\n"
" context vars by default; enabled by default in the free-threaded\n"
" build and disabled otherwise; also #e{PYTHON_THREAD_INHERIT_CONTEXT}\n"
#ifdef Py_GIL_DISABLED
"#s{-X} #L{tlbc}#b{=[0|1]}: enable (#B{1}) or disable (#B{0}) thread-local bytecode. Also\n"
" #e{PYTHON_TLBC}\n"
#endif
"#s{-X} #L{tracemalloc}#b{[=N]}: trace Python memory allocations; N sets a traceback limit\n"
" of #B{N} frames (default: #B{1}); also #e{PYTHONTRACEMALLOC}#B{=N}\n"
"#s{-X} #L{utf8}#b{[=0|1]}: enable (#B{1}) or disable (#B{0}) UTF-8 mode; also #e{PYTHONUTF8}\n"
"#s{-X} #L{warn_default_encoding}: enable opt-in EncodingWarning for 'encoding=None';\n"
" also #e{PYTHONWARNDEFAULTENCODING}\n"
;
/* Envvars that don't have equivalent command-line options are listed first */
static const char usage_envvars[] =
"#h{Environment variables that change behavior:}\n"
"#E{PYTHONASYNCIODEBUG}: enable asyncio debug mode\n"
"#E{PYTHON_BASIC_REPL}: use the traditional parser-based REPL\n"
"#E{PYTHONBREAKPOINT}: if this variable is set to #B{0}, it disables the default\n"
" debugger. It can be set to the callable of your debugger of\n"
" choice.\n"
"#E{PYTHONCASEOK} : ignore case in 'import' statements (Windows)\n"
"#E{PYTHONCOERCECLOCALE}: if this variable is set to #B{0}, it disables the locale\n"
" coercion behavior. Use #e{PYTHONCOERCECLOCALE}#B{=warn} to request\n"
" display of locale coercion and locale compatibility warnings\n"
" on stderr.\n"
"#E{PYTHON_COLORS} : if this variable is set to #B{1}, the interpreter will colorize\n"
" various kinds of output. Setting it to #B{0} deactivates\n"
" this behavior.\n"
#ifdef Py_TRACE_REFS
"#E{PYTHONDUMPREFS} : dump objects and reference counts still alive after shutdown\n"
"#E{PYTHONDUMPREFSFILE}: dump objects and reference counts to the specified file\n"
#endif
#ifdef __APPLE__
"#E{PYTHONEXECUTABLE}: set sys.argv[0] to this value (macOS only)\n"
#endif
"#E{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"
"#E{PYTHON_HISTORY} : the location of a .python_history file.\n"
"#E{PYTHONHOME} : alternate <prefix> directory (or <prefix>#D<exec_prefix>).\n"
" The default module search path uses #H.\n"
"#E{PYTHONIOENCODING}: encoding[:errors] used for stdin/stdout/stderr\n"
#ifdef MS_WINDOWS
"#E{PYTHONLEGACYWINDOWSFSENCODING}: use legacy \"mbcs\" encoding for file system\n"
"#E{PYTHONLEGACYWINDOWSSTDIO}: use legacy Windows stdio\n"
#endif
"#E{PYTHONMALLOC} : set the Python memory allocators and/or install debug hooks\n"
" on Python memory allocators. Use #e{PYTHONMALLOC}#B{=debug} to\n"
" install debug hooks.\n"
"#E{PYTHONMALLOCSTATS}: print memory allocator statistics\n"
"#E{PYTHONPATH} : '#D'-separated list of directories prefixed to the\n"
" default module search path. The result is sys.path.\n"
"#E{PYTHONPLATLIBDIR}: override sys.platlibdir\n"
"#E{PYTHONSTARTUP} : file executed on interactive startup (no default)\n"
"#E{PYTHONUSERBASE} : defines the user base directory (site.USER_BASE)\n"
"\n"
"#h{These variables have equivalent command-line options (see }#e{--help} for details):\n"
"#E{PYTHON_CONTEXT_AWARE_WARNINGS}: if true (#B{1}), enable thread-safe warnings\n"
" module behaviour (#S{-X} #e{context_aware_warnings})\n"
"#E{PYTHON_CPU_COUNT}: override the return value of os.cpu_count() (#S{-X} #e{cpu_count})\n"
"#E{PYTHONDEBUG} : enable parser debug mode (#S{-d})\n"
"#E{PYTHONDEVMODE} : enable Python Development Mode (#S{-X} #e{dev})\n"
"#E{PYTHONDONTWRITEBYTECODE}: don't write .pyc files (#S{-B})\n"
"#E{PYTHONFAULTHANDLER}: dump the Python traceback on fatal errors (#S{-X} #e{faulthandler})\n"
"#E{PYTHON_FROZEN_MODULES}: whether to use frozen modules; the default is \"#B{on}\"\n"
" for installed Python and \"#B{off}\" for a local build\n"
" (#S{-X} #e{frozen_modules})\n"
#ifdef Py_GIL_DISABLED
"#E{PYTHON_GIL} : when set to #B{0}, disables the GIL (#S{-X} #e{gil})\n"
#endif
"#E{PYTHONINSPECT} : inspect interactively after running script (#S{-i})\n"
"#E{PYTHONINTMAXSTRDIGITS}: limit the size of int<->str conversions;\n"
" 0 disables the limit (#S{-X} #e{int_max_str_digits}#B{=N})\n"
"#E{PYTHON_LAZY_IMPORTS}: control global lazy imports (#S{-X} #e{lazy_imports})\n"
"#E{PYTHONNODEBUGRANGES}: don't include extra location information in code objects\n"
" (#S{-X} #e{no_debug_ranges})\n"
"#E{PYTHONNOUSERSITE}: disable user site directory (#S{-s})\n"
"#E{PYTHONOPTIMIZE} : enable level 1 optimizations (#S{-O})\n"
"#E{PYTHON_PERF_JIT_SUPPORT}: enable Linux \"perf\" profiler support with JIT\n"
" (#S{-X} #e{perf_jit})\n"
"#E{PYTHONPERFSUPPORT}: support the Linux \"perf\" profiler (#S{-X} #e{perf})\n"
#ifdef Py_DEBUG
"#E{PYTHON_PRESITE}: import this module before site (#S{-X} #e{presite})\n"
#endif
"#E{PYTHONPROFILEIMPORTTIME}: show how long each import takes (#S{-X} #e{importtime})\n"
"#E{PYTHONPYCACHEPREFIX}: root directory for bytecode cache (pyc) files\n"
" (#S{-X} #e{pycache_prefix})\n"
"#E{PYTHONSAFEPATH} : don't prepend a potentially unsafe path to sys.path.\n"
#ifdef Py_STATS
"#E{PYTHONSTATS} : turns on statistics gathering (#S{-X} #e{pystats})\n"
#endif
"#E{PYTHON_THREAD_INHERIT_CONTEXT}: if true (#B{1}), threads inherit context vars\n"
" (#S{-X} #e{thread_inherit_context})\n"
#ifdef Py_GIL_DISABLED
"#E{PYTHON_TLBC} : when set to #B{0}, disables thread-local bytecode (#S{-X} #e{tlbc})\n"
#endif
"#E{PYTHONTRACEMALLOC}: trace Python memory allocations (#S{-X} #e{tracemalloc})\n"
"#E{PYTHONUNBUFFERED}: disable stdout/stderr buffering (#S{-u})\n"
"#E{PYTHONUTF8} : control the UTF-8 mode (#S{-X} #e{utf8})\n"
"#E{PYTHONVERBOSE} : trace import statements (#S{-v})\n"
"#E{PYTHONWARNDEFAULTENCODING}: enable opt-in EncodingWarning for 'encoding=None'\n"
" (#S{-X} #e{warn_default_encoding})\n"
"#E{PYTHONWARNINGS} : warning control (#S{-W})\n"
;
/* --- Global configuration variables ----------------------------- */
// Variable removed from Python limited C API 3.16, but kept in the stable ABI
PyAPI_DATA(int) Py_UTF8Mode;
/* UTF-8 mode (PEP 540): if equal to 1, use the UTF-8 encoding, and change
stdin and stdout error handler to "surrogateescape". */
int Py_UTF8Mode = 0;
static PyObject *
_Py_GetGlobalVariablesAsDict(void)
{
extern const char *Py_FileSystemDefaultEncoding;
extern const char *Py_FileSystemDefaultEncodeErrors;
extern int Py_HasFileSystemDefaultEncoding;
extern int _Py_HasFileSystemDefaultEncodeErrors;
PyObject *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(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);
return dict;
fail:
Py_DECREF(dict);
return NULL;
#undef FROM_STRING
#undef SET_ITEM
#undef SET_ITEM_INT
#undef SET_ITEM_STR
}
char*
Py_GETENV(const char *name)
{
int use_environment = 1;
PyThreadState *tstate = PyThreadState_GetUnchecked();
if (tstate != NULL) {
const PyConfig *config = &tstate->interp->config;
use_environment = config->use_environment;
}
if (!use_environment) {
return NULL;
}
return getenv(name);
}
/* --- 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);