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/*
* Declarations shared between the different parts of the io module
*/
#include "exports.h"
#include "pycore_moduleobject.h" // _PyModule_GetState()
#include "pycore_typeobject.h" // _PyType_GetModuleState()
#include "structmember.h"
/* Type specs */
extern PyType_Spec bufferediobase_spec;
extern PyType_Spec bufferedrandom_spec;
extern PyType_Spec bufferedreader_spec;
extern PyType_Spec bufferedrwpair_spec;
extern PyType_Spec bufferedwriter_spec;
extern PyType_Spec bytesio_spec;
extern PyType_Spec bytesiobuf_spec;
extern PyType_Spec fileio_spec;
extern PyType_Spec iobase_spec;
extern PyType_Spec nldecoder_spec;
extern PyType_Spec rawiobase_spec;
extern PyType_Spec stringio_spec;
extern PyType_Spec textiobase_spec;
extern PyType_Spec textiowrapper_spec;
#ifdef HAVE_WINDOWS_CONSOLE_IO
extern PyType_Spec winconsoleio_spec;
#endif
/* 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.
*/
typedef struct _io_state _PyIO_State; // Forward decl.
extern PyObject* _PyIOBase_check_readable(_PyIO_State *state,
PyObject *self, PyObject *args);
extern PyObject* _PyIOBase_check_writable(_PyIO_State *state,
PyObject *self, PyObject *args);
extern PyObject* _PyIOBase_check_seekable(_PyIO_State *state,
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 OSError 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;
struct _io_state {
int initialized;
PyObject *unsupported_operation;
/* Types */
PyTypeObject *PyIOBase_Type;
PyTypeObject *PyIncrementalNewlineDecoder_Type;
PyTypeObject *PyRawIOBase_Type;
PyTypeObject *PyBufferedIOBase_Type;
PyTypeObject *PyBufferedRWPair_Type;
PyTypeObject *PyBufferedRandom_Type;
PyTypeObject *PyBufferedReader_Type;
PyTypeObject *PyBufferedWriter_Type;
PyTypeObject *PyBytesIOBuffer_Type;
PyTypeObject *PyBytesIO_Type;
PyTypeObject *PyFileIO_Type;
PyTypeObject *PyStringIO_Type;
PyTypeObject *PyTextIOBase_Type;
PyTypeObject *PyTextIOWrapper_Type;
#ifdef HAVE_WINDOWS_CONSOLE_IO
PyTypeObject *PyWindowsConsoleIO_Type;
#endif
};
static inline _PyIO_State *
get_io_state(PyObject *module)
{
void *state = _PyModule_GetState(module);
assert(state != NULL);
return (_PyIO_State *)state;
}
static inline _PyIO_State *
get_io_state_by_cls(PyTypeObject *cls)
{
void *state = _PyType_GetModuleState(cls);
assert(state != NULL);
return (_PyIO_State *)state;
}
static inline _PyIO_State *
find_io_state_by_def(PyTypeObject *type)
{
PyObject *mod = PyType_GetModuleByDef(type, &_PyIO_Module);
assert(mod != NULL);
return get_io_state(mod);
}
extern PyObject *_PyIOBase_cannot_pickle(PyObject *self, PyObject *args);
#ifdef HAVE_WINDOWS_CONSOLE_IO
extern char _PyIO_get_console_type(PyObject *);
#endif
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