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cpython/Python/initconfig.c at 2bd04d423404e5ea862c858f62af76feade4d831 · python/cpython · GitHub
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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_SetDefaultAllocator()
#include
"pycore_pystate.h"
// _PyThreadState_GET()
#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
/* --- 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 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 : 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 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 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\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\
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\
\n\
-X faulthandler: enable faulthandler\n\
\n\
-X showrefcount: output the total reference count and number of used\n\
memory blocks when the program finishes or after each statement in the\n\
interactive interpreter. This only works on debug builds\n\
\n\
-X tracemalloc: start tracing Python memory allocations using the\n\
tracemalloc module. By default, only the most recent frame is stored in a\n\
traceback of a trace. Use -X tracemalloc=NFRAME to start tracing with a\n\
traceback limit of NFRAME frames\n\
\n\
-X importtime: show how long each import takes. It shows module name,\n\
cumulative time (including nested imports) and self time (excluding\n\
nested imports). Note that its output may be broken in multi-threaded\n\
application. Typical usage is python3 -X importtime -c 'import asyncio'\n\
\n\
-X dev: enable CPython's \"development mode\", introducing additional runtime\n\
checks which are too expensive to be enabled by default. Effect of the\n\
developer mode:\n\
* Add default warning filter, as -W default\n\
* Install debug hooks on memory allocators: see the PyMem_SetupDebugHooks()\n\
C function\n\
* Enable the faulthandler module to dump the Python traceback on a crash\n\
* Enable asyncio debug mode\n\
* Set the dev_mode attribute of sys.flags to True\n\
* io.IOBase destructor logs close() exceptions\n\
\n\
-X utf8: enable UTF-8 mode for operating system interfaces, overriding the default\n\
locale-aware mode. -X utf8=0 explicitly disables UTF-8 mode (even when it would\n\
otherwise activate automatically)\n\
\n\
-X pycache_prefix=PATH: enable writing .pyc files to a parallel tree rooted at the\n\
given directory instead of to the code tree\n\
\n\
-X warn_default_encoding: enable opt-in EncodingWarning for 'encoding=None'\n\
\n\
-X no_debug_ranges: disable the inclusion of the tables mapping extra location \n\
information (end line, start column offset and end column offset) to every \n\
instruction in code objects. This is useful when smaller code objects and pyc \n\
files are desired as well as suppressing the extra visual location indicators \n\
when the interpreter displays tracebacks.\n\
\n\
-X perf: activate support for the Linux \"perf\" profiler by activating the \"perf\"\n\
trampoline. When this option is activated, the Linux \"perf\" profiler will be \n\
able to report Python calls. This option is only available on some platforms and will \n\
do nothing if is not supported on the current system. The default value is \"off\".\n\
\n\
-X frozen_modules=[on|off]: whether or not frozen modules should be used.\n\
The default is \"on\" (or \"off\" if you are running a local build).\n\
\n\
-X int_max_str_digits=number: limit the size of int<->str conversions.\n\
This helps avoid denial of service attacks when parsing untrusted data.\n\
The default is sys.int_info.default_max_str_digits. 0 disables."
#ifdef
Py_STATS
"\n\
\n\
-X pystats: Enable pystats collection at startup."
#endif
;
/* Envvars that don't have equivalent command-line options are listed first */
static
const
char
usage_envvars
[]
=
"Environment variables that change behavior:\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"
"PYTHONHOME : alternate <prefix> directory (or <prefix>%lc<exec_prefix>).\n"
" The default module search path uses %s.\n"
"PYTHONPLATLIBDIR : override sys.platlibdir.\n"
"PYTHONCASEOK : ignore case in 'import' statements (Windows).\n"
"PYTHONUTF8: if set to 1, enable the UTF-8 mode.\n"
"PYTHONIOENCODING: Encoding[:errors] used for stdin/stdout/stderr.\n"
"PYTHONFAULTHANDLER: dump the Python traceback on fatal errors.\n"
"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 set to an\n"
" integer in the range [0,4294967295] to get hash values with a\n"
" predictable seed.\n"
"PYTHONINTMAXSTRDIGITS: limits the maximum digit characters in an int value\n"
" when converting from a string and when converting an int back to a str.\n"
" A value of 0 disables the limit. Conversions to or from bases 2, 4, 8,\n"
" 16, and 32 are never limited.\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"
"PYTHONWARNDEFAULTENCODING: enable opt-in EncodingWarning for 'encoding=None'.\n"
"PYTHONNODEBUGRANGES: If this variable is set, it disables the inclusion of the \n"
" tables mapping extra location information (end line, start column offset \n"
" and end column offset) to every instruction in code objects. This is useful \n"
" when smaller code objects and pyc files are desired as well as suppressing the \n"
" extra visual location indicators when the interpreter displays tracebacks.\n"
"These variables have equivalent command-line parameters (see --help for details):\n"
"PYTHONDEBUG : enable parser debug mode (-d)\n"
"PYTHONDONTWRITEBYTECODE : don't write .pyc files (-B)\n"
"PYTHONINSPECT : inspect interactively after running script (-i)\n"
"PYTHONINTMAXSTRDIGITS : limit max digit characters in an int value\n"
" (-X int_max_str_digits=number)\n"
"PYTHONNOUSERSITE : disable user site directory (-s)\n"
"PYTHONOPTIMIZE : enable level 1 optimizations (-O)\n"
"PYTHONSAFEPATH : don't prepend a potentially unsafe path to sys.path (-P)\n"
"PYTHONUNBUFFERED : disable stdout/stderr buffering (-u)\n"
"PYTHONVERBOSE : trace import statements (-v)\n"
"PYTHONWARNINGS=arg : warning control (-W arg)\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) { \
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_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
); }
PyObject
*
_PyErr_SetFromPyStatus
(
PyStatus
status
)
{
if
(!
_PyStatus_IS_ERROR
(
status
)) {
PyErr_Format
(
PyExc_SystemError
,
"%s() expects an error PyStatus"
,
_PyStatus_GET_FUNC
());
}
else
if
(
status
.
func
) {
PyErr_Format
(
PyExc_ValueError
,
"%s: %s"
,
status
.
func
,
status
.
err_msg
);
}
else
{
PyErr_Format
(
PyExc_ValueError
,
"%s"
,
status
.
err_msg
);
}
return
NULL
;
}
/* --- 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
(
&
copy
);
return
-1
;
}
copy
.
items
[
i
]
=
item
;
copy
.
length
=
i
+
1
;
}
_PyWideStringList_Clear
(
list
);
*
list
=
copy
;
return
0
;
}
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
;
}
/* --- Py_GetArgcArgv() ------------------------------------------- */
void
_Py_ClearArgcArgv
(
void
)
{
PyMemAllocatorEx
old_alloc
;
_PyMem_SetDefaultAllocator
(
PYMEM_DOMAIN_RAW
,
&
old_alloc
);
_PyWideStringList_Clear
(
&
_PyRuntime
.
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
);
// XXX _PyRuntime.orig_argv only gets cleared by Py_Main(),
// so it currently leaks for embedders.
res
=
_PyWideStringList_Copy
(
&
_PyRuntime
.
orig_argv
,
&
argv_list
);
PyMem_SetAllocator
(
PYMEM_DOMAIN_RAW
,
&
old_alloc
);
return
res
;
}
// _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
);
// config->use_frozen_modules is initialized later
// by _PyConfig_InitImportConfig().
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
;
CLEAR
(
config
->
stdlib_dir
);
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
->
platlibdir
);
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
);
_PyWideStringList_Clear
(
&
config
->
orig_argv
);
#undef
CLEAR
}
void
_PyConfig_InitCompatConfig
(
PyConfig
*
config
)
{
memset
(
config
,
0
,
sizeof
(
*
config
));
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
->
perf_profiling
=
-1
;
config
->
module_search_paths_set
=
0
;
config
->
parse_argv
=
0
;
config
->
site_import
=
-1
;
config
->
bytes_warning
=
-1
;
config
->
warn_default_encoding
=
0
;
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
#ifdef
Py_DEBUG
config
->
use_frozen_modules
=
0
;
#else
config
->
use_frozen_modules
=
1
;
#endif
config
->
safe_path
=
0
;
config
->
int_max_str_digits
=
-1
;
config
->
_is_python_build
=
0
;
config
->
code_debug_ranges
=
1
;
}
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
}
void
PyConfig_InitPythonConfig
(
PyConfig
*
config
)
{
config_init_defaults
(
config
);
config
->
_config_init
=
(
int
)
_PyConfig_INIT_PYTHON
;
config
->
configure_c_stdio
=
1
;
config
->
parse_argv
=
1
;
}
void
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
->
perf_profiling
=
0
;
config
->
int_max_str_digits
=
_PY_LONG_DEFAULT_MAX_STR_DIGITS
;
config
->
safe_path
=
1
;
config
->
pathconfig_warnings
=
0
;
#ifdef
MS_WINDOWS
config
->
legacy_windows_stdio
=
0
;
#endif
}
/* 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
(
perf_profiling
);
COPY_ATTR
(
import_time
);
COPY_ATTR
(
code_debug_ranges
);
COPY_ATTR
(
show_ref_count
);
COPY_ATTR
(
dump_refs
);
COPY_ATTR
(
dump_refs_file
);
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
(
stdlib_dir
);
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_WSTR_ATTR
(
platlibdir
);
COPY_ATTR
(
site_import
);
COPY_ATTR
(
bytes_warning
);
COPY_ATTR
(
warn_default_encoding
);
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
);
COPY_ATTR
(
use_frozen_modules
);
COPY_ATTR
(
safe_path
);
COPY_WSTRLIST
(
orig_argv
);
COPY_ATTR
(
_is_python_build
);
COPY_ATTR
(
int_max_str_digits
);
#undef
COPY_ATTR
#undef
COPY_WSTR_ATTR
#undef
COPY_WSTRLIST
return
_PyStatus_OK
();
}
PyObject
*
_PyConfig_AsDict
(
const
PyConfig
*
config
)
{
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
(
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_NewRef(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
(
perf_profiling
);
SET_ITEM_INT
(
import_time
);
SET_ITEM_INT
(
code_debug_ranges
);
SET_ITEM_INT
(
show_ref_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
);
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