188 lines
6.4 KiB
C
188 lines
6.4 KiB
C
/*
|
||
* 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;
|
||
|
||
#ifndef Py_LIMITED_API
|
||
#ifdef MS_WINDOWS
|
||
extern PyTypeObject PyWindowsConsoleIO_Type;
|
||
#define PyWindowsConsoleIO_Check(op) (PyObject_TypeCheck((op), &PyWindowsConsoleIO_Type))
|
||
#endif /* MS_WINDOWS */
|
||
#endif /* Py_LIMITED_API */
|
||
|
||
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.
|
||
|
||
There are three modes, in order of priority:
|
||
* translated: Only find \n (assume newlines already translated)
|
||
* universal: Use universal newlines algorithm
|
||
* Otherwise, the line ending is specified by readnl, a str object */
|
||
extern Py_ssize_t _PyIO_find_line_ending(
|
||
int translated, int universal, PyObject *readnl,
|
||
int kind, const char *start, const char *end, Py_ssize_t *consumed);
|
||
|
||
/* Return 1 if an EnvironmentError with errno == EINTR is set (and then
|
||
clears the error indicator), 0 otherwise.
|
||
Should only be called when PyErr_Occurred() is true.
|
||
*/
|
||
extern int _PyIO_trap_eintr(void);
|
||
|
||
#define DEFAULT_BUFFER_SIZE (8 * 1024) /* bytes */
|
||
|
||
/*
|
||
* Offset type for positioning.
|
||
*/
|
||
|
||
/* Printing a variable of type off_t (with e.g., PyUnicode_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. */
|
||
|
||
#ifdef MS_WINDOWS
|
||
|
||
/* Windows uses long long for offsets */
|
||
typedef long long Py_off_t;
|
||
# define PyLong_AsOff_t PyLong_AsLongLong
|
||
# define PyLong_FromOff_t PyLong_FromLongLong
|
||
# define PY_OFF_T_MAX LLONG_MAX
|
||
# define PY_OFF_T_MIN LLONG_MIN
|
||
# define PY_OFF_T_COMPAT 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 (SIZEOF_OFF_T == SIZEOF_LONG_LONG)
|
||
# define PyLong_AsOff_t PyLong_AsLongLong
|
||
# define PyLong_FromOff_t PyLong_FromLongLong
|
||
# define PY_OFF_T_MAX LLONG_MAX
|
||
# define PY_OFF_T_MIN LLONG_MIN
|
||
# define PY_OFF_T_COMPAT 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 *locale_module;
|
||
|
||
PyObject *unsupported_operation;
|
||
} _PyIO_State;
|
||
|
||
#define IO_MOD_STATE(mod) ((_PyIO_State *)PyModule_GetState(mod))
|
||
#define IO_STATE() _PyIO_get_module_state()
|
||
|
||
extern _PyIO_State *_PyIO_get_module_state(void);
|
||
extern PyObject *_PyIO_get_locale_module(_PyIO_State *);
|
||
|
||
#ifdef MS_WINDOWS
|
||
extern char _PyIO_get_console_type(PyObject *);
|
||
#endif
|
||
|
||
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_readall;
|
||
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;
|