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#include
"Python.h"
#include
"pycore_fileutils.h"
// DECODE_LOCALE_ERR
#include
"pycore_getopt.h"
// _PyOS_GetOpt()
#include
"pycore_initconfig.h"
// _PyArgv
#include
"pycore_pymem.h"
// _PyMem_GetAllocatorName()
#include
"pycore_runtime.h"
// _PyRuntime_Initialize()
#include
<locale.h>
// setlocale()
#include
<stdlib.h>
// getenv()
/* Forward declarations */
static
void
preconfig_copy
(
PyPreConfig
*
config
,
const
PyPreConfig
*
config2
);
/* --- File system encoding/errors -------------------------------- */
const
char
*
Py_FileSystemDefaultEncoding
=
NULL
;
int
Py_HasFileSystemDefaultEncoding
=
0
;
const
char
*
Py_FileSystemDefaultEncodeErrors
=
NULL
;
int
_Py_HasFileSystemDefaultEncodeErrors
=
0
;
void
_Py_ClearFileSystemEncoding
(
void
)
{
_Py_COMP_DIAG_PUSH
_Py_COMP_DIAG_IGNORE_DEPR_DECLS
if
(!
Py_HasFileSystemDefaultEncoding
&&
Py_FileSystemDefaultEncoding
) {
PyMem_RawFree
((
char
*
)
Py_FileSystemDefaultEncoding
);
Py_FileSystemDefaultEncoding
=
NULL
;
}
if
(!
_Py_HasFileSystemDefaultEncodeErrors
&&
Py_FileSystemDefaultEncodeErrors
) {
PyMem_RawFree
((
char
*
)
Py_FileSystemDefaultEncodeErrors
);
Py_FileSystemDefaultEncodeErrors
=
NULL
;
}
_Py_COMP_DIAG_POP
}
/* Set Py_FileSystemDefaultEncoding and Py_FileSystemDefaultEncodeErrors
global configuration variables to PyConfig.filesystem_encoding and
PyConfig.filesystem_errors (encoded to UTF-8).
Function called by _PyUnicode_InitEncodings(). */
int
_Py_SetFileSystemEncoding
(
const
char
*
encoding
,
const
char
*
errors
)
{
char
*
encoding2
=
_PyMem_RawStrdup
(
encoding
);
if
(
encoding2
==
NULL
) {
return
-1
;
}
char
*
errors2
=
_PyMem_RawStrdup
(
errors
);
if
(
errors2
==
NULL
) {
PyMem_RawFree
(
encoding2
);
return
-1
;
}
_Py_ClearFileSystemEncoding
();
_Py_COMP_DIAG_PUSH
_Py_COMP_DIAG_IGNORE_DEPR_DECLS
Py_FileSystemDefaultEncoding
=
encoding2
;
Py_HasFileSystemDefaultEncoding
=
0
;
Py_FileSystemDefaultEncodeErrors
=
errors2
;
_Py_HasFileSystemDefaultEncodeErrors
=
0
;
_Py_COMP_DIAG_POP
return
0
;
}
/* --- _PyArgv ---------------------------------------------------- */
/* Decode bytes_argv using Py_DecodeLocale() */
PyStatus
_PyArgv_AsWstrList
(
const
_PyArgv
*
args
,
PyWideStringList
*
list
)
{
PyWideStringList
wargv
=
_PyWideStringList_INIT
;
if
(
args
->
use_bytes_argv
) {
size_t
size
=
sizeof
(
wchar_t
*
)
*
args
->
argc
;
wargv
.
items
=
(
wchar_t
*
*
)
PyMem_RawMalloc
(
size
);
if
(
wargv
.
items
==
NULL
) {
return
_PyStatus_NO_MEMORY
();
}
for
(
Py_ssize_t
i
=
0
;
i
<
args
->
argc
;
i
++
) {
size_t
len
;
wchar_t
*
arg
=
Py_DecodeLocale
(
args
->
bytes_argv
[
i
],
&
len
);
if
(
arg
==
NULL
) {
_PyWideStringList_Clear
(
&
wargv
);
return
DECODE_LOCALE_ERR
(
"command line arguments"
,
len
);
}
wargv
.
items
[
i
]
=
arg
;
wargv
.
length
++
;
}
_PyWideStringList_Clear
(
list
);
*
list
=
wargv
;
}
else
{
wargv
.
length
=
args
->
argc
;
wargv
.
items
=
(
wchar_t
*
*
)
args
->
wchar_argv
;
if
(
_PyWideStringList_Copy
(
list
,
&
wargv
)
<
0
) {
return
_PyStatus_NO_MEMORY
();
}
}
return
_PyStatus_OK
();
}
/* --- _PyPreCmdline ------------------------------------------------- */
void
_PyPreCmdline_Clear
(
_PyPreCmdline
*
cmdline
)
{
_PyWideStringList_Clear
(
&
cmdline
->
argv
);
_PyWideStringList_Clear
(
&
cmdline
->
xoptions
);
}
PyStatus
_PyPreCmdline_SetArgv
(
_PyPreCmdline
*
cmdline
,
const
_PyArgv
*
args
)
{
return
_PyArgv_AsWstrList
(
args
,
&
cmdline
->
argv
);
}
static
void
precmdline_get_preconfig
(
_PyPreCmdline
*
cmdline
,
const
PyPreConfig
*
config
)
{
#define
COPY_ATTR
(
ATTR
) \
if (config->ATTR != -1) { \
cmdline->ATTR = config->ATTR; \
}
COPY_ATTR
(
isolated
);
COPY_ATTR
(
use_environment
);
COPY_ATTR
(
dev_mode
);
#undef
COPY_ATTR
}
static
void
precmdline_set_preconfig
(
const
_PyPreCmdline
*
cmdline
,
PyPreConfig
*
config
)
{
#define
COPY_ATTR
(
ATTR
) \
config->ATTR = cmdline->ATTR
COPY_ATTR
(
isolated
);
COPY_ATTR
(
use_environment
);
COPY_ATTR
(
dev_mode
);
#undef
COPY_ATTR
}
PyStatus
_PyPreCmdline_SetConfig
(
const
_PyPreCmdline
*
cmdline
,
PyConfig
*
config
)
{
#define
COPY_ATTR
(
ATTR
) \
config->ATTR = cmdline->ATTR
PyStatus
status
=
_PyWideStringList_Extend
(
&
config
->
xoptions
,
&
cmdline
->
xoptions
);
if
(
_PyStatus_EXCEPTION
(
status
)) {
return
status
;
}
COPY_ATTR
(
isolated
);
COPY_ATTR
(
use_environment
);
COPY_ATTR
(
dev_mode
);
COPY_ATTR
(
warn_default_encoding
);
return
_PyStatus_OK
();
#undef
COPY_ATTR
}
/* Parse the command line arguments */
static
PyStatus
precmdline_parse_cmdline
(
_PyPreCmdline
*
cmdline
)
{
const
PyWideStringList
*
argv
=
&
cmdline
->
argv
;
_PyOS_ResetGetOpt
();
/* Don't log parsing errors into stderr here: PyConfig_Read()
is responsible for that */
_PyOS_opterr
=
0
;
do
{
int
longindex
=
-1
;
int
c
=
_PyOS_GetOpt
(
argv
->
length
,
argv
->
items
,
&
longindex
);
if
(
c
==
EOF
||
c
==
'c'
||
c
==
'm'
) {
break
;
}
switch
(
c
) {
case
'E'
:
cmdline
->
use_environment
=
0
;
break
;
case
'I'
:
cmdline
->
isolated
=
1
;
break
;
case
'X'
:
{
PyStatus
status
=
PyWideStringList_Append
(
&
cmdline
->
xoptions
,
_PyOS_optarg
);
if
(
_PyStatus_EXCEPTION
(
status
)) {
return
status
;
}
break
;
}
default
:
/* ignore other argument:
handled by PyConfig_Read() */
break
;
}
}
while
(
1
);
return
_PyStatus_OK
();
}
PyStatus
_PyPreCmdline_Read
(
_PyPreCmdline
*
cmdline
,
const
PyPreConfig
*
preconfig
)
{
precmdline_get_preconfig
(
cmdline
,
preconfig
);
if
(
preconfig
->
parse_argv
) {
PyStatus
status
=
precmdline_parse_cmdline
(
cmdline
);
if
(
_PyStatus_EXCEPTION
(
status
)) {
return
status
;
}
}
/* isolated, use_environment */
if
(
cmdline
->
isolated
<
0
) {
cmdline
->
isolated
=
0
;
}
if
(
cmdline
->
isolated
>
0
) {
cmdline
->
use_environment
=
0
;
}
if
(
cmdline
->
use_environment
<
0
) {
cmdline
->
use_environment
=
0
;
}
/* dev_mode */
if
((
cmdline
->
dev_mode
<
0
)
&&
(
_Py_get_xoption
(
&
cmdline
->
xoptions
,
L"dev"
)
||
_Py_GetEnv
(
cmdline
->
use_environment
,
"PYTHONDEVMODE"
)))
{
cmdline
->
dev_mode
=
1
;
}
if
(
cmdline
->
dev_mode
<
0
) {
cmdline
->
dev_mode
=
0
;
}
// warn_default_encoding
if
(
_Py_get_xoption
(
&
cmdline
->
xoptions
,
L"warn_default_encoding"
)
||
_Py_GetEnv
(
cmdline
->
use_environment
,
"PYTHONWARNDEFAULTENCODING"
))
{
cmdline
->
warn_default_encoding
=
1
;
}
assert
(
cmdline
->
use_environment
>=
0
);
assert
(
cmdline
->
isolated
>=
0
);
assert
(
cmdline
->
dev_mode
>=
0
);
assert
(
cmdline
->
warn_default_encoding
>=
0
);
return
_PyStatus_OK
();
}
/* --- PyPreConfig ----------------------------------------------- */
void
_PyPreConfig_InitCompatConfig
(
PyPreConfig
*
config
)
{
memset
(
config
,
0
,
sizeof
(
*
config
));
config
->
_config_init
=
(
int
)
_PyConfig_INIT_COMPAT
;
config
->
parse_argv
=
0
;
config
->
isolated
=
-1
;
config
->
use_environment
=
-1
;
config
->
configure_locale
=
1
;
/* bpo-36443: C locale coercion (PEP 538) and UTF-8 Mode (PEP 540)
are disabled by default using the Compat configuration.
Py_UTF8Mode=1 enables the UTF-8 mode. PYTHONUTF8 environment variable
is ignored (even if use_environment=1). */
config
->
utf8_mode
=
0
;
config
->
coerce_c_locale
=
0
;
config
->
coerce_c_locale_warn
=
0
;
config
->
dev_mode
=
-1
;
config
->
allocator
=
PYMEM_ALLOCATOR_NOT_SET
;
#ifdef
MS_WINDOWS
config
->
legacy_windows_fs_encoding
=
-1
;
#endif
}
void
PyPreConfig_InitPythonConfig
(
PyPreConfig
*
config
)
{
_PyPreConfig_InitCompatConfig
(
config
);
config
->
_config_init
=
(
int
)
_PyConfig_INIT_PYTHON
;
config
->
isolated
=
0
;
config
->
parse_argv
=
1
;
config
->
use_environment
=
1
;
/* Set to -1 to enable C locale coercion (PEP 538) and UTF-8 Mode (PEP 540)
depending on the LC_CTYPE locale, PYTHONUTF8 and PYTHONCOERCECLOCALE
environment variables. */
config
->
coerce_c_locale
=
-1
;
config
->
coerce_c_locale_warn
=
-1
;
config
->
utf8_mode
=
-1
;
#ifdef
MS_WINDOWS
config
->
legacy_windows_fs_encoding
=
0
;
#endif
}
void
PyPreConfig_InitIsolatedConfig
(
PyPreConfig
*
config
)
{
_PyPreConfig_InitCompatConfig
(
config
);
config
->
_config_init
=
(
int
)
_PyConfig_INIT_ISOLATED
;
config
->
configure_locale
=
0
;
config
->
isolated
=
1
;
config
->
use_environment
=
0
;
config
->
utf8_mode
=
0
;
config
->
dev_mode
=
0
;
#ifdef
MS_WINDOWS
config
->
legacy_windows_fs_encoding
=
0
;
#endif
}
PyStatus
_PyPreConfig_InitFromPreConfig
(
PyPreConfig
*
config
,
const
PyPreConfig
*
config2
)
{
PyPreConfig_InitPythonConfig
(
config
);
preconfig_copy
(
config
,
config2
);
return
_PyStatus_OK
();
}
void
_PyPreConfig_InitFromConfig
(
PyPreConfig
*
preconfig
,
const
PyConfig
*
config
)
{
_PyConfigInitEnum
config_init
=
(
_PyConfigInitEnum
)
config
->
_config_init
;
switch
(
config_init
) {
case
_PyConfig_INIT_PYTHON
:
PyPreConfig_InitPythonConfig
(
preconfig
);
break
;
case
_PyConfig_INIT_ISOLATED
:
PyPreConfig_InitIsolatedConfig
(
preconfig
);
break
;
case
_PyConfig_INIT_COMPAT
:
default
:
_PyPreConfig_InitCompatConfig
(
preconfig
);
}
_PyPreConfig_GetConfig
(
preconfig
,
config
);
}
static
void
preconfig_copy
(
PyPreConfig
*
config
,
const
PyPreConfig
*
config2
)
{
#define
COPY_ATTR
(
ATTR
) config->ATTR = config2->ATTR
COPY_ATTR
(
_config_init
);
COPY_ATTR
(
parse_argv
);
COPY_ATTR
(
isolated
);
COPY_ATTR
(
use_environment
);
COPY_ATTR
(
configure_locale
);
COPY_ATTR
(
dev_mode
);
COPY_ATTR
(
coerce_c_locale
);
COPY_ATTR
(
coerce_c_locale_warn
);
COPY_ATTR
(
utf8_mode
);
COPY_ATTR
(
allocator
);
#ifdef
MS_WINDOWS
COPY_ATTR
(
legacy_windows_fs_encoding
);
#endif
#undef
COPY_ATTR
}
PyObject
*
_PyPreConfig_AsDict
(
const
PyPreConfig
*
config
)
{
PyObject
*
dict
;
dict
=
PyDict_New
();
if
(
dict
==
NULL
) {
return
NULL
;
}
#define
SET_ITEM_INT
(
ATTR
) \
do { \
PyObject *obj = PyLong_FromLong(config->ATTR); \
if (obj == NULL) { \
goto fail; \
} \
int res = PyDict_SetItemString(dict, #ATTR, obj); \
Py_DECREF(obj); \
if (res < 0) { \
goto fail; \
} \
} while (0)
SET_ITEM_INT
(
_config_init
);
SET_ITEM_INT
(
parse_argv
);
SET_ITEM_INT
(
isolated
);
SET_ITEM_INT
(
use_environment
);
SET_ITEM_INT
(
configure_locale
);
SET_ITEM_INT
(
coerce_c_locale
);
SET_ITEM_INT
(
coerce_c_locale_warn
);
SET_ITEM_INT
(
utf8_mode
);
#ifdef
MS_WINDOWS
SET_ITEM_INT
(
legacy_windows_fs_encoding
);
#endif
SET_ITEM_INT
(
dev_mode
);
SET_ITEM_INT
(
allocator
);
return
dict
;
fail
:
Py_DECREF
(
dict
);
return
NULL
;
#undef
SET_ITEM_INT
}
void
_PyPreConfig_GetConfig
(
PyPreConfig
*
preconfig
,
const
PyConfig
*
config
)
{
#define
COPY_ATTR
(
ATTR
) \
if (config->ATTR != -1) { \
preconfig->ATTR = config->ATTR; \
}
COPY_ATTR
(
parse_argv
);
COPY_ATTR
(
isolated
);
COPY_ATTR
(
use_environment
);
COPY_ATTR
(
dev_mode
);
#undef
COPY_ATTR
}
static
void
preconfig_get_global_vars
(
PyPreConfig
*
config
)
{
if
(
config
->
_config_init
!=
_PyConfig_INIT_COMPAT
) {
/* Python and Isolated configuration ignore global variables */
return
;
}
#define
COPY_FLAG
(
ATTR
,
VALUE
) \
if (config->ATTR < 0) { \
config->ATTR = VALUE; \
}
#define
COPY_NOT_FLAG
(
ATTR
,
VALUE
) \
if (config->ATTR < 0) { \
config->ATTR = !(VALUE); \
}
_Py_COMP_DIAG_PUSH
_Py_COMP_DIAG_IGNORE_DEPR_DECLS
COPY_FLAG
(
isolated
,
Py_IsolatedFlag
);
COPY_NOT_FLAG
(
use_environment
,
Py_IgnoreEnvironmentFlag
);
if
(
Py_UTF8Mode
>
0
) {
config
->
utf8_mode
=
Py_UTF8Mode
;
}
#ifdef
MS_WINDOWS
COPY_FLAG
(
legacy_windows_fs_encoding
,
Py_LegacyWindowsFSEncodingFlag
);
#endif
_Py_COMP_DIAG_POP
#undef
COPY_FLAG
#undef
COPY_NOT_FLAG
}
static
void
preconfig_set_global_vars
(
const
PyPreConfig
*
config
)
{
#define
COPY_FLAG
(
ATTR
,
VAR
) \
if (config->ATTR >= 0) { \
VAR = config->ATTR; \
}
#define
COPY_NOT_FLAG
(
ATTR
,
VAR
) \
if (config->ATTR >= 0) { \
VAR = !config->ATTR; \
}
_Py_COMP_DIAG_PUSH
_Py_COMP_DIAG_IGNORE_DEPR_DECLS
COPY_FLAG
(
isolated
,
Py_IsolatedFlag
);
COPY_NOT_FLAG
(
use_environment
,
Py_IgnoreEnvironmentFlag
);
#ifdef
MS_WINDOWS
COPY_FLAG
(
legacy_windows_fs_encoding
,
Py_LegacyWindowsFSEncodingFlag
);
#endif
COPY_FLAG
(
utf8_mode
,
Py_UTF8Mode
);
_Py_COMP_DIAG_POP
#undef
COPY_FLAG
#undef
COPY_NOT_FLAG
}
const
char
*
_Py_GetEnv
(
int
use_environment
,
const
char
*
name
)
{
assert
(
use_environment
>=
0
);
if
(!
use_environment
) {
return
NULL
;
}
const
char
*
var
=
getenv
(
name
);
if
(
var
&&
var
[
0
]
!=
'\0'
) {
return
var
;
}
else
{
return
NULL
;
}
}
int
_Py_str_to_int
(
const
char
*
str
,
int
*
result
)
{
const
char
*
endptr
=
str
;
errno
=
0
;
long
value
=
strtol
(
str
, (
char
*
*
)
&
endptr
,
10
);
if
(
*
endptr
!=
'\0'
||
errno
==
ERANGE
) {
return
-1
;
}
if
(
value
<
INT_MIN
||
value
>
INT_MAX
) {
return
-1
;
}
*
result
=
(
int
)
value
;
return
0
;
}
void
_Py_get_env_flag
(
int
use_environment
,
int
*
flag
,
const
char
*
name
)
{
const
char
*
var
=
_Py_GetEnv
(
use_environment
,
name
);
if
(!
var
) {
return
;
}
int
value
;
if
(
_Py_str_to_int
(
var
,
&
value
)
<
0
||
value
<
0
) {
/* PYTHONDEBUG=text and PYTHONDEBUG=-2 behave as PYTHONDEBUG=1 */
value
=
1
;
}
if
(
*
flag
<
value
) {
*
flag
=
value
;
}
}
const
wchar_t
*
_Py_get_xoption
(
const
PyWideStringList
*
xoptions
,
const
wchar_t
*
name
)
{
for
(
Py_ssize_t
i
=
0
;
i
<
xoptions
->
length
;
i
++
) {
const
wchar_t
*
option
=
xoptions
->
items
[
i
];
size_t
len
;
wchar_t
*
sep
=
wcschr
(
option
,
L'='
);
if
(
sep
!=
NULL
) {
len
=
(
sep
-
option
);
}
else
{
len
=
wcslen
(
option
);
}
if
(
wcsncmp
(
option
,
name
,
len
)
==
0
&&
name
[
len
]
==
L'\0'
) {
return
option
;
}
}
return
NULL
;
}
static
PyStatus
preconfig_init_utf8_mode
(
PyPreConfig
*
config
,
const
_PyPreCmdline
*
cmdline
)
{
#ifdef
MS_WINDOWS
if
(
config
->
legacy_windows_fs_encoding
) {
config
->
utf8_mode
=
0
;
}
#endif
if
(
config
->
utf8_mode
>=
0
) {
return
_PyStatus_OK
();
}
const
wchar_t
*
xopt
;
xopt
=
_Py_get_xoption
(
&
cmdline
->
xoptions
,
L"utf8"
);
if
(
xopt
) {
wchar_t
*
sep
=
wcschr
(
xopt
,
L'='
);
if
(
sep
) {
xopt
=
sep
+
1
;
if
(
wcscmp
(
xopt
,
L"1"
)
==
0
) {
config
->
utf8_mode
=
1
;
}
else
if
(
wcscmp
(
xopt
,
L"0"
)
==
0
) {
config
->
utf8_mode
=
0
;
}
else
{
return
_PyStatus_ERR
(
"invalid -X utf8 option value"
);
}
}
else
{
config
->
utf8_mode
=
1
;
}
return
_PyStatus_OK
();
}
const
char
*
opt
=
_Py_GetEnv
(
config
->
use_environment
,
"PYTHONUTF8"
);
if
(
opt
) {
if
(
strcmp
(
opt
,
"1"
)
==
0
) {
config
->
utf8_mode
=
1
;
}
else
if
(
strcmp
(
opt
,
"0"
)
==
0
) {
config
->
utf8_mode
=
0
;
}
else
{
return
_PyStatus_ERR
(
"invalid PYTHONUTF8 environment "
"variable value"
);
}
return
_PyStatus_OK
();
}
#ifndef
MS_WINDOWS
if
(
config
->
utf8_mode
<
0
) {
/* The C locale and the POSIX locale enable the UTF-8 Mode (PEP 540) */
const
char
*
ctype_loc
=
setlocale
(
LC_CTYPE
,
NULL
);
if
(
ctype_loc
!=
NULL
&&
(
strcmp
(
ctype_loc
,
"C"
)
==
0
||
strcmp
(
ctype_loc
,
"POSIX"
)
==
0
))
{
config
->
utf8_mode
=
1
;
}
}
#endif
if
(
config
->
utf8_mode
<
0
) {
config
->
utf8_mode
=
0
;
}
return
_PyStatus_OK
();
}
static
void
preconfig_init_coerce_c_locale
(
PyPreConfig
*
config
)
{
if
(!
config
->
configure_locale
) {
config
->
coerce_c_locale
=
0
;
config
->
coerce_c_locale_warn
=
0
;
return
;
}
const
char
*
env
=
_Py_GetEnv
(
config
->
use_environment
,
"PYTHONCOERCECLOCALE"
);
if
(
env
) {
if
(
strcmp
(
env
,
"0"
)
==
0
) {
if
(
config
->
coerce_c_locale
<
0
) {
config
->
coerce_c_locale
=
0
;
}
}
else
if
(
strcmp
(
env
,
"warn"
)
==
0
) {
if
(
config
->
coerce_c_locale_warn
<
0
) {
config
->
coerce_c_locale_warn
=
1
;
}
}
else
{
if
(
config
->
coerce_c_locale
<
0
) {
config
->
coerce_c_locale
=
1
;
}
}
}
/* Test if coerce_c_locale equals to -1 or equals to 1:
PYTHONCOERCECLOCALE=1 doesn't imply that the C locale is always coerced.
It is only coerced if if the LC_CTYPE locale is "C". */
if
(
config
->
coerce_c_locale
<
0
||
config
->
coerce_c_locale
==
1
) {
/* The C locale enables the C locale coercion (PEP 538) */
if
(
_Py_LegacyLocaleDetected
(
0
)) {
config
->
coerce_c_locale
=
2
;
}
else
{
config
->
coerce_c_locale
=
0
;
}
}
if
(
config
->
coerce_c_locale_warn
<
0
) {
config
->
coerce_c_locale_warn
=
0
;
}
}
static
PyStatus
preconfig_init_allocator
(
PyPreConfig
*
config
)
{
if
(
config
->
allocator
==
PYMEM_ALLOCATOR_NOT_SET
) {
/* bpo-34247. The PYTHONMALLOC environment variable has the priority
over PYTHONDEV env var and "-X dev" command line option.
For example, PYTHONMALLOC=malloc PYTHONDEVMODE=1 sets the memory
allocators to "malloc" (and not to "debug"). */
const
char
*
envvar
=
_Py_GetEnv
(
config
->
use_environment
,
"PYTHONMALLOC"
);
if
(
envvar
) {
PyMemAllocatorName
name
;
if
(
_PyMem_GetAllocatorName
(
envvar
,
&
name
)
<
0
) {
return
_PyStatus_ERR
(
"PYTHONMALLOC: unknown allocator"
);
}
config
->
allocator
=
(
int
)
name
;
}
}
if
(
config
->
dev_mode
&&
config
->
allocator
==
PYMEM_ALLOCATOR_NOT_SET
) {
config
->
allocator
=
PYMEM_ALLOCATOR_DEBUG
;
}
return
_PyStatus_OK
();
}
static
PyStatus
preconfig_read
(
PyPreConfig
*
config
,
_PyPreCmdline
*
cmdline
)
{
PyStatus
status
;
status
=
_PyPreCmdline_Read
(
cmdline
,
config
);
if
(
_PyStatus_EXCEPTION
(
status
)) {
return
status
;
}
precmdline_set_preconfig
(
cmdline
,
config
);
/* legacy_windows_fs_encoding, coerce_c_locale, utf8_mode */
#ifdef
MS_WINDOWS
_Py_get_env_flag
(
config
->
use_environment
,
&
config
->
legacy_windows_fs_encoding
,
"PYTHONLEGACYWINDOWSFSENCODING"
);
#endif
preconfig_init_coerce_c_locale
(
config
);
status
=
preconfig_init_utf8_mode
(
config
,
cmdline
);
if
(
_PyStatus_EXCEPTION
(
status
)) {
return
status
;
}
/* allocator */
status
=
preconfig_init_allocator
(
config
);
if
(
_PyStatus_EXCEPTION
(
status
)) {
return
status
;
}
assert
(
config
->
coerce_c_locale
>=
0
);
assert
(
config
->
coerce_c_locale_warn
>=
0
);
#ifdef
MS_WINDOWS
assert
(
config
->
legacy_windows_fs_encoding
>=
0
);
#endif
assert
(
config
->
utf8_mode
>=
0
);
assert
(
config
->
isolated
>=
0
);
assert
(
config
->
use_environment
>=
0
);
assert
(
config
->
dev_mode
>=
0
);
return
_PyStatus_OK
();
}
/* Read the configuration from:
- command line arguments
- environment variables
- Py_xxx global configuration variables
- the LC_CTYPE locale */
PyStatus
_PyPreConfig_Read
(
PyPreConfig
*
config
,
const
_PyArgv
*
args
)
{
PyStatus
status
;
status
=
_PyRuntime_Initialize
();
if
(
_PyStatus_EXCEPTION
(
status
)) {
return
status
;
}
preconfig_get_global_vars
(
config
);
/* Copy LC_CTYPE locale, since it's modified later */
const
char
*
loc
=
setlocale
(
LC_CTYPE
,
NULL
);
if
(
loc
==
NULL
) {
return
_PyStatus_ERR
(
"failed to LC_CTYPE locale"
);
}
char
*
init_ctype_locale
=
_PyMem_RawStrdup
(
loc
);
if
(
init_ctype_locale
==
NULL
) {
return
_PyStatus_NO_MEMORY
();
}
/* Save the config to be able to restore it if encodings change */
PyPreConfig
save_config
;
status
=
_PyPreConfig_InitFromPreConfig
(
&
save_config
,
config
);
if
(
_PyStatus_EXCEPTION
(
status
)) {
return
status
;
}
/* Set LC_CTYPE to the user preferred locale */
if
(
config
->
configure_locale
) {
_Py_SetLocaleFromEnv
(
LC_CTYPE
);
}
PyPreConfig
save_runtime_config
;
preconfig_copy
(
&
save_runtime_config
,
&
_PyRuntime
.
preconfig
);
_PyPreCmdline
cmdline
=
_PyPreCmdline_INIT
;
int
locale_coerced
=
0
;
int
loops
=
0
;
while
(
1
) {
int
utf8_mode
=
config
->
utf8_mode
;
/* Watchdog to prevent an infinite loop */
loops
++
;
if
(
loops
==
3
) {
status
=
_PyStatus_ERR
(
"Encoding changed twice while "
"reading the configuration"
);
goto
done
;
}
/* bpo-34207: Py_DecodeLocale() and Py_EncodeLocale() depend
on the utf8_mode and legacy_windows_fs_encoding members
of _PyRuntime.preconfig. */
preconfig_copy
(
&
_PyRuntime
.
preconfig
,
config
);
if
(
args
) {
// Set command line arguments at each iteration. If they are bytes
// strings, they are decoded from the new encoding.
status
=
_PyPreCmdline_SetArgv
(
&
cmdline
,
args
);
if
(
_PyStatus_EXCEPTION
(
status
)) {
goto
done
;
}
}
status
=
preconfig_read
(
config
,
&
cmdline
);
if
(
_PyStatus_EXCEPTION
(
status
)) {
goto
done
;
}
/* The legacy C locale assumes ASCII as the default text encoding, which
* causes problems not only for the CPython runtime, but also other
* components like GNU readline.
*
* Accordingly, when the CLI detects it, it attempts to coerce it to a
* more capable UTF-8 based alternative.
*
* See the documentation of the PYTHONCOERCECLOCALE setting for more
* details.
*/
int
encoding_changed
=
0
;
if
(
config
->
coerce_c_locale
&&
!
locale_coerced
) {
locale_coerced
=
1
;
_Py_CoerceLegacyLocale
(
0
);
encoding_changed
=
1
;
}
if
(
utf8_mode
==
-1
) {
if
(
config
->
utf8_mode
==
1
) {
/* UTF-8 Mode enabled */
encoding_changed
=
1
;
}
}
else
{
if
(
config
->
utf8_mode
!=
utf8_mode
) {
encoding_changed
=
1
;
}
}
if
(!
encoding_changed
) {
break
;
}
/* Reset the configuration before reading again the configuration,
just keep UTF-8 Mode and coerce C locale value. */
int
new_utf8_mode
=
config
->
utf8_mode
;
int
new_coerce_c_locale
=
config
->
coerce_c_locale
;
preconfig_copy
(
config
,
&
save_config
);
config
->
utf8_mode
=
new_utf8_mode
;
config
->
coerce_c_locale
=
new_coerce_c_locale
;
/* The encoding changed: read again the configuration
with the new encoding */
}
status
=
_PyStatus_OK
();
done
:
// Revert side effects
setlocale
(
LC_CTYPE
,
init_ctype_locale
);
PyMem_RawFree
(
init_ctype_locale
);
preconfig_copy
(
&
_PyRuntime
.
preconfig
,
&
save_runtime_config
);
_PyPreCmdline_Clear
(
&
cmdline
);
return
status
;
}
/* Write the pre-configuration:
- set the memory allocators
- set Py_xxx global configuration variables
- set the LC_CTYPE locale (coerce C locale, PEP 538) and set the UTF-8 mode
(PEP 540)
The applied configuration is written into _PyRuntime.preconfig.
If the C locale cannot be coerced, set coerce_c_locale to 0.
Do nothing if called after Py_Initialize(): ignore the new
pre-configuration. */
PyStatus
_PyPreConfig_Write
(
const
PyPreConfig
*
src_config
)
{
PyPreConfig
config
;
PyStatus
status
=
_PyPreConfig_InitFromPreConfig
(
&
config
,
src_config
);
if
(
_PyStatus_EXCEPTION
(
status
)) {
return
status
;
}
if
(
_PyRuntime
.
core_initialized
) {
/* bpo-34008: Calling this functions after Py_Initialize() ignores
the new configuration. */
return
_PyStatus_OK
();
}
PyMemAllocatorName
name
=
(
PyMemAllocatorName
)
config
.
allocator
;
if
(
name
!=
PYMEM_ALLOCATOR_NOT_SET
) {
if
(
_PyMem_SetupAllocators
(
name
)
<
0
) {
return
_PyStatus_ERR
(
"Unknown PYTHONMALLOC allocator"
);
}
}
preconfig_set_global_vars
(
&
config
);
if
(
config
.
configure_locale
) {
if
(
config
.
coerce_c_locale
) {
if
(!
_Py_CoerceLegacyLocale
(
config
.
coerce_c_locale_warn
)) {
/* C locale not coerced */
config
.
coerce_c_locale
=
0
;
}
}
/* Set LC_CTYPE to the user preferred locale */
_Py_SetLocaleFromEnv
(
LC_CTYPE
);
}
/* Write the new pre-configuration into _PyRuntime */
preconfig_copy
(
&
_PyRuntime
.
preconfig
,
&
config
);
return
_PyStatus_OK
();
}
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