1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
|
/*
* 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"
/* ABCs */
extern PyTypeObject PyIOBase_Type;
extern PyTypeObject PyRawIOBase_Type;
extern PyTypeObject PyBufferedIOBase_Type;
extern PyTypeObject PyTextIOBase_Type;
/* Type specs */
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 fileio_spec;
extern PyType_Spec nldecoder_spec;
extern PyType_Spec stringio_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.
*/
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 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;
typedef struct {
int initialized;
PyObject *unsupported_operation;
/* Types */
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 MS_WINDOWS
PyTypeObject *PyWindowsConsoleIO_Type;
#endif
} _PyIO_State;
#define IO_MOD_STATE(mod) ((_PyIO_State *)PyModule_GetState(mod))
#define IO_STATE() _PyIO_get_module_state()
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 _PyIO_State *_PyIO_get_module_state(void);
#ifdef HAVE_WINDOWS_CONSOLE_IO
extern char _PyIO_get_console_type(PyObject *);
#endif
extern Py_EXPORTED_SYMBOL PyTypeObject _PyBytesIOBuffer_Type;
|
