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cpython/Programs/python.c at master · bob1de/cpython · GitHub
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/* Minimal main program -- everything is loaded from the library */
#include
"Python.h"
#include
<locale.h>
#ifdef
__FreeBSD__
#include
<fenv.h>
#endif
#ifdef
MS_WINDOWS
int
wmain
(
int
argc
,
wchar_t
*
*
argv
)
{
return
Py_Main
(
argc
,
argv
);
}
#else
/* Access private pylifecycle helper API to better handle the legacy C locale
*
* 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.
*
*/
extern
int
_Py_LegacyLocaleDetected
(
void
);
extern
void
_Py_CoerceLegacyLocale
(
void
);
int
main
(
int
argc
,
char
*
*
argv
)
{
wchar_t
*
*
argv_copy
;
/* We need a second copy, as Python might modify the first one. */
wchar_t
*
*
argv_copy2
;
int
i
,
res
;
char
*
oldloc
;
/* Force malloc() allocator to bootstrap Python */
#ifdef
Py_DEBUG
(
void
)
_PyMem_SetupAllocators
(
"malloc_debug"
);
# else
(
void
)
_PyMem_SetupAllocators
(
"malloc"
);
# endif
argv_copy
=
(
wchar_t
*
*
)
PyMem_RawMalloc
(
sizeof
(
wchar_t
*
)
*
(
argc
+
1
));
argv_copy2
=
(
wchar_t
*
*
)
PyMem_RawMalloc
(
sizeof
(
wchar_t
*
)
*
(
argc
+
1
));
if
(!
argv_copy
||
!
argv_copy2
) {
fprintf
(
stderr
,
"out of memory\n"
);
return
1
;
}
/* 754 requires that FP exceptions run in "no stop" mode by default,
* and until C vendors implement C99's ways to control FP exceptions,
* Python requires non-stop mode. Alas, some platforms enable FP
* exceptions by default. Here we disable them.
*/
#ifdef
__FreeBSD__
fedisableexcept
(
FE_OVERFLOW
);
#endif
oldloc
=
_PyMem_RawStrdup
(
setlocale
(
LC_ALL
,
NULL
));
if
(!
oldloc
) {
fprintf
(
stderr
,
"out of memory\n"
);
return
1
;
}
#ifdef
__ANDROID__
/* Passing "" to setlocale() on Android requests the C locale rather
* than checking environment variables, so request C.UTF-8 explicitly
*/
setlocale
(
LC_ALL
,
"C.UTF-8"
);
#else
/* Reconfigure the locale to the default for this process */
setlocale
(
LC_ALL
,
""
);
#endif
if
(
_Py_LegacyLocaleDetected
()) {
_Py_CoerceLegacyLocale
();
}
/* Convert from char to wchar_t based on the locale settings */
for
(
i
=
0
;
i
<
argc
;
i
++
) {
argv_copy
[
i
]
=
Py_DecodeLocale
(
argv
[
i
],
NULL
);
if
(!
argv_copy
[
i
]) {
PyMem_RawFree
(
oldloc
);
fprintf
(
stderr
,
"Fatal Python error: "
"unable to decode the command line argument #%i\n"
,
i
+
1
);
return
1
;
}
argv_copy2
[
i
]
=
argv_copy
[
i
];
}
argv_copy2
[
argc
]
=
argv_copy
[
argc
]
=
NULL
;
setlocale
(
LC_ALL
,
oldloc
);
PyMem_RawFree
(
oldloc
);
res
=
Py_Main
(
argc
,
argv_copy
);
/* Force again malloc() allocator to release memory blocks allocated
before Py_Main() */
#ifdef
Py_DEBUG
(
void
)
_PyMem_SetupAllocators
(
"malloc_debug"
);
# else
(
void
)
_PyMem_SetupAllocators
(
"malloc"
);
# endif
for
(
i
=
0
;
i
<
argc
;
i
++
) {
PyMem_RawFree
(
argv_copy2
[
i
]);
}
PyMem_RawFree
(
argv_copy
);
PyMem_RawFree
(
argv_copy2
);
return
res
;
}
#endif
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