| /* |
| * Declarations shared between the different parts of the io module |
| */ |
| |
| /* ABCs */ |
| extern PyTypeObject PyIOBase_Type; |
| extern PyTypeObject PyRawIOBase_Type; |
| extern PyTypeObject PyBufferedIOBase_Type; |
| extern PyTypeObject PyTextIOBase_Type; |
| |
| /* Concrete classes */ |
| extern PyTypeObject PyFileIO_Type; |
| extern PyTypeObject PyBytesIO_Type; |
| extern PyTypeObject PyStringIO_Type; |
| extern PyTypeObject PyBufferedReader_Type; |
| extern PyTypeObject PyBufferedWriter_Type; |
| extern PyTypeObject PyBufferedRWPair_Type; |
| extern PyTypeObject PyBufferedRandom_Type; |
| extern PyTypeObject PyTextIOWrapper_Type; |
| extern PyTypeObject PyIncrementalNewlineDecoder_Type; |
| |
| |
| extern int _PyIO_ConvertSsize_t(PyObject *, void *); |
| |
| /* These functions are used as METH_NOARGS methods, are normally called |
| * with args=NULL, and return a new reference. |
| * BUT when args=Py_True is passed, they return a borrowed reference. |
| */ |
| extern PyObject* _PyIOBase_check_readable(PyObject *self, PyObject *args); |
| extern PyObject* _PyIOBase_check_writable(PyObject *self, PyObject *args); |
| extern PyObject* _PyIOBase_check_seekable(PyObject *self, PyObject *args); |
| extern PyObject* _PyIOBase_check_closed(PyObject *self, PyObject *args); |
| |
| /* Helper for finalization. |
| This function will revive an object ready to be deallocated and try to |
| close() it. It returns 0 if the object can be destroyed, or -1 if it |
| is alive again. */ |
| extern int _PyIOBase_finalize(PyObject *self); |
| |
| /* Returns true if the given FileIO object is closed. |
| Doesn't check the argument type, so be careful! */ |
| extern int _PyFileIO_closed(PyObject *self); |
| |
| /* Shortcut to the core of the IncrementalNewlineDecoder.decode method */ |
| extern PyObject *_PyIncrementalNewlineDecoder_decode( |
| PyObject *self, PyObject *input, int final); |
| |
| /* Finds the first line ending between `start` and `end`. |
| If found, returns the index after the line ending and doesn't touch |
| `*consumed`. |
| If not found, returns -1 and sets `*consumed` to the number of characters |
| which can be safely put aside until another search. |
| |
| NOTE: for performance reasons, `end` must point to a NUL character ('\0'). |
| Otherwise, the function will scan further and return garbage. */ |
| extern Py_ssize_t _PyIO_find_line_ending( |
| int translated, int universal, PyObject *readnl, |
| Py_UNICODE *start, Py_UNICODE *end, Py_ssize_t *consumed); |
| |
| |
| #define DEFAULT_BUFFER_SIZE (8 * 1024) /* bytes */ |
| |
| typedef struct { |
| PyException_HEAD |
| PyObject *myerrno; |
| PyObject *strerror; |
| PyObject *filename; /* Not used, but part of the IOError object */ |
| Py_ssize_t written; |
| } PyBlockingIOErrorObject; |
| extern PyObject *PyExc_BlockingIOError; |
| |
| /* |
| * Offset type for positioning. |
| */ |
| |
| /* Printing a variable of type off_t (with e.g., PyString_FromFormat) |
| correctly and without producing compiler warnings is surprisingly painful. |
| We identify an integer type whose size matches off_t and then: (1) cast the |
| off_t to that integer type and (2) use the appropriate conversion |
| specification. The cast is necessary: gcc complains about formatting a |
| long with "%lld" even when both long and long long have the same |
| precision. */ |
| |
| #if defined(MS_WIN64) || defined(MS_WINDOWS) |
| |
| /* Windows uses long long for offsets */ |
| typedef PY_LONG_LONG Py_off_t; |
| # define PyLong_AsOff_t PyLong_AsLongLong |
| # define PyLong_FromOff_t PyLong_FromLongLong |
| # define PY_OFF_T_MAX PY_LLONG_MAX |
| # define PY_OFF_T_MIN PY_LLONG_MIN |
| # define PY_OFF_T_COMPAT PY_LONG_LONG /* type compatible with off_t */ |
| # define PY_PRIdOFF "lld" /* format to use for that type */ |
| |
| #else |
| |
| /* Other platforms use off_t */ |
| typedef off_t Py_off_t; |
| #if (SIZEOF_OFF_T == SIZEOF_SIZE_T) |
| # define PyLong_AsOff_t PyLong_AsSsize_t |
| # define PyLong_FromOff_t PyLong_FromSsize_t |
| # define PY_OFF_T_MAX PY_SSIZE_T_MAX |
| # define PY_OFF_T_MIN PY_SSIZE_T_MIN |
| # define PY_OFF_T_COMPAT Py_ssize_t |
| # define PY_PRIdOFF "zd" |
| #elif (HAVE_LONG_LONG && SIZEOF_OFF_T == SIZEOF_LONG_LONG) |
| # define PyLong_AsOff_t PyLong_AsLongLong |
| # define PyLong_FromOff_t PyLong_FromLongLong |
| # define PY_OFF_T_MAX PY_LLONG_MAX |
| # define PY_OFF_T_MIN PY_LLONG_MIN |
| # define PY_OFF_T_COMPAT PY_LONG_LONG |
| # define PY_PRIdOFF "lld" |
| #elif (SIZEOF_OFF_T == SIZEOF_LONG) |
| # define PyLong_AsOff_t PyLong_AsLong |
| # define PyLong_FromOff_t PyLong_FromLong |
| # define PY_OFF_T_MAX LONG_MAX |
| # define PY_OFF_T_MIN LONG_MIN |
| # define PY_OFF_T_COMPAT long |
| # define PY_PRIdOFF "ld" |
| #else |
| # error off_t does not match either size_t, long, or long long! |
| #endif |
| |
| #endif |
| |
| extern Py_off_t PyNumber_AsOff_t(PyObject *item, PyObject *err); |
| |
| /* Implementation details */ |
| |
| /* IO module structure */ |
| |
| extern PyModuleDef _PyIO_Module; |
| |
| typedef struct { |
| int initialized; |
| PyObject *os_module; |
| PyObject *locale_module; |
| |
| PyObject *unsupported_operation; |
| } _PyIO_State; |
| |
| #define IO_MOD_STATE(mod) ((_PyIO_State *)PyModule_GetState(mod)) |
| #define IO_STATE IO_MOD_STATE(PyState_FindModule(&_PyIO_Module)) |
| |
| extern PyObject *_PyIO_str_close; |
| extern PyObject *_PyIO_str_closed; |
| extern PyObject *_PyIO_str_decode; |
| extern PyObject *_PyIO_str_encode; |
| extern PyObject *_PyIO_str_fileno; |
| extern PyObject *_PyIO_str_flush; |
| extern PyObject *_PyIO_str_getstate; |
| extern PyObject *_PyIO_str_isatty; |
| extern PyObject *_PyIO_str_newlines; |
| extern PyObject *_PyIO_str_nl; |
| extern PyObject *_PyIO_str_read; |
| extern PyObject *_PyIO_str_read1; |
| extern PyObject *_PyIO_str_readable; |
| extern PyObject *_PyIO_str_readinto; |
| extern PyObject *_PyIO_str_readline; |
| extern PyObject *_PyIO_str_reset; |
| extern PyObject *_PyIO_str_seek; |
| extern PyObject *_PyIO_str_seekable; |
| extern PyObject *_PyIO_str_setstate; |
| extern PyObject *_PyIO_str_tell; |
| extern PyObject *_PyIO_str_truncate; |
| extern PyObject *_PyIO_str_writable; |
| extern PyObject *_PyIO_str_write; |
| |
| extern PyObject *_PyIO_empty_str; |
| extern PyObject *_PyIO_empty_bytes; |
| extern PyObject *_PyIO_zero; |
| |
| extern PyTypeObject _PyBytesIOBuffer_Type; |