| /* |
| An implementation of the new I/O lib as defined by PEP 3116 - "New I/O" |
| |
| Classes defined here: UnsupportedOperation, BlockingIOError. |
| Functions defined here: open(). |
| |
| Mostly written by Amaury Forgeot d'Arc |
| */ |
| |
| #define PY_SSIZE_T_CLEAN |
| #include "Python.h" |
| #include "structmember.h" |
| #include "_iomodule.h" |
| |
| #ifdef HAVE_SYS_TYPES_H |
| #include <sys/types.h> |
| #endif /* HAVE_SYS_TYPES_H */ |
| |
| #ifdef HAVE_SYS_STAT_H |
| #include <sys/stat.h> |
| #endif /* HAVE_SYS_STAT_H */ |
| |
| |
| /* Various interned strings */ |
| |
| PyObject *_PyIO_str_close; |
| PyObject *_PyIO_str_closed; |
| PyObject *_PyIO_str_decode; |
| PyObject *_PyIO_str_encode; |
| PyObject *_PyIO_str_fileno; |
| PyObject *_PyIO_str_flush; |
| PyObject *_PyIO_str_getstate; |
| PyObject *_PyIO_str_isatty; |
| PyObject *_PyIO_str_newlines; |
| PyObject *_PyIO_str_nl; |
| PyObject *_PyIO_str_read; |
| PyObject *_PyIO_str_read1; |
| PyObject *_PyIO_str_readable; |
| PyObject *_PyIO_str_readall; |
| PyObject *_PyIO_str_readinto; |
| PyObject *_PyIO_str_readline; |
| PyObject *_PyIO_str_reset; |
| PyObject *_PyIO_str_seek; |
| PyObject *_PyIO_str_seekable; |
| PyObject *_PyIO_str_setstate; |
| PyObject *_PyIO_str_tell; |
| PyObject *_PyIO_str_truncate; |
| PyObject *_PyIO_str_writable; |
| PyObject *_PyIO_str_write; |
| |
| PyObject *_PyIO_empty_str; |
| PyObject *_PyIO_empty_bytes; |
| PyObject *_PyIO_zero; |
| |
| |
| PyDoc_STRVAR(module_doc, |
| "The io module provides the Python interfaces to stream handling. The\n" |
| "builtin open function is defined in this module.\n" |
| "\n" |
| "At the top of the I/O hierarchy is the abstract base class IOBase. It\n" |
| "defines the basic interface to a stream. Note, however, that there is no\n" |
| "separation between reading and writing to streams; implementations are\n" |
| "allowed to raise an IOError if they do not support a given operation.\n" |
| "\n" |
| "Extending IOBase is RawIOBase which deals simply with the reading and\n" |
| "writing of raw bytes to a stream. FileIO subclasses RawIOBase to provide\n" |
| "an interface to OS files.\n" |
| "\n" |
| "BufferedIOBase deals with buffering on a raw byte stream (RawIOBase). Its\n" |
| "subclasses, BufferedWriter, BufferedReader, and BufferedRWPair buffer\n" |
| "streams that are readable, writable, and both respectively.\n" |
| "BufferedRandom provides a buffered interface to random access\n" |
| "streams. BytesIO is a simple stream of in-memory bytes.\n" |
| "\n" |
| "Another IOBase subclass, TextIOBase, deals with the encoding and decoding\n" |
| "of streams into text. TextIOWrapper, which extends it, is a buffered text\n" |
| "interface to a buffered raw stream (`BufferedIOBase`). Finally, StringIO\n" |
| "is an in-memory stream for text.\n" |
| "\n" |
| "Argument names are not part of the specification, and only the arguments\n" |
| "of open() are intended to be used as keyword arguments.\n" |
| "\n" |
| "data:\n" |
| "\n" |
| "DEFAULT_BUFFER_SIZE\n" |
| "\n" |
| " An int containing the default buffer size used by the module's buffered\n" |
| " I/O classes. open() uses the file's blksize (as obtained by os.stat) if\n" |
| " possible.\n" |
| ); |
| |
| |
| /* |
| * The main open() function |
| */ |
| /*[clinic input] |
| module _io |
| |
| _io.open |
| file: object |
| mode: str = "r" |
| buffering: int = -1 |
| encoding: str(accept={str, NoneType}) = NULL |
| errors: str(accept={str, NoneType}) = NULL |
| newline: str(accept={str, NoneType}) = NULL |
| closefd: int(c_default="1") = True |
| opener: object = None |
| |
| Open file and return a stream. Raise IOError upon failure. |
| |
| file is either a text or byte string giving the name (and the path |
| if the file isn't in the current working directory) of the file to |
| be opened or an integer file descriptor of the file to be |
| wrapped. (If a file descriptor is given, it is closed when the |
| returned I/O object is closed, unless closefd is set to False.) |
| |
| mode is an optional string that specifies the mode in which the file |
| is opened. It defaults to 'r' which means open for reading in text |
| mode. Other common values are 'w' for writing (truncating the file if |
| it already exists), 'x' for creating and writing to a new file, and |
| 'a' for appending (which on some Unix systems, means that all writes |
| append to the end of the file regardless of the current seek position). |
| In text mode, if encoding is not specified the encoding used is platform |
| dependent: locale.getpreferredencoding(False) is called to get the |
| current locale encoding. (For reading and writing raw bytes use binary |
| mode and leave encoding unspecified.) The available modes are: |
| |
| ========= =============================================================== |
| Character Meaning |
| --------- --------------------------------------------------------------- |
| 'r' open for reading (default) |
| 'w' open for writing, truncating the file first |
| 'x' create a new file and open it for writing |
| 'a' open for writing, appending to the end of the file if it exists |
| 'b' binary mode |
| 't' text mode (default) |
| '+' open a disk file for updating (reading and writing) |
| 'U' universal newline mode (deprecated) |
| ========= =============================================================== |
| |
| The default mode is 'rt' (open for reading text). For binary random |
| access, the mode 'w+b' opens and truncates the file to 0 bytes, while |
| 'r+b' opens the file without truncation. The 'x' mode implies 'w' and |
| raises an `FileExistsError` if the file already exists. |
| |
| Python distinguishes between files opened in binary and text modes, |
| even when the underlying operating system doesn't. Files opened in |
| binary mode (appending 'b' to the mode argument) return contents as |
| bytes objects without any decoding. In text mode (the default, or when |
| 't' is appended to the mode argument), the contents of the file are |
| returned as strings, the bytes having been first decoded using a |
| platform-dependent encoding or using the specified encoding if given. |
| |
| 'U' mode is deprecated and will raise an exception in future versions |
| of Python. It has no effect in Python 3. Use newline to control |
| universal newlines mode. |
| |
| buffering is an optional integer used to set the buffering policy. |
| Pass 0 to switch buffering off (only allowed in binary mode), 1 to select |
| line buffering (only usable in text mode), and an integer > 1 to indicate |
| the size of a fixed-size chunk buffer. When no buffering argument is |
| given, the default buffering policy works as follows: |
| |
| * Binary files are buffered in fixed-size chunks; the size of the buffer |
| is chosen using a heuristic trying to determine the underlying device's |
| "block size" and falling back on `io.DEFAULT_BUFFER_SIZE`. |
| On many systems, the buffer will typically be 4096 or 8192 bytes long. |
| |
| * "Interactive" text files (files for which isatty() returns True) |
| use line buffering. Other text files use the policy described above |
| for binary files. |
| |
| encoding is the name of the encoding used to decode or encode the |
| file. This should only be used in text mode. The default encoding is |
| platform dependent, but any encoding supported by Python can be |
| passed. See the codecs module for the list of supported encodings. |
| |
| errors is an optional string that specifies how encoding errors are to |
| be handled---this argument should not be used in binary mode. Pass |
| 'strict' to raise a ValueError exception if there is an encoding error |
| (the default of None has the same effect), or pass 'ignore' to ignore |
| errors. (Note that ignoring encoding errors can lead to data loss.) |
| See the documentation for codecs.register or run 'help(codecs.Codec)' |
| for a list of the permitted encoding error strings. |
| |
| newline controls how universal newlines works (it only applies to text |
| mode). It can be None, '', '\n', '\r', and '\r\n'. It works as |
| follows: |
| |
| * On input, if newline is None, universal newlines mode is |
| enabled. Lines in the input can end in '\n', '\r', or '\r\n', and |
| these are translated into '\n' before being returned to the |
| caller. If it is '', universal newline mode is enabled, but line |
| endings are returned to the caller untranslated. If it has any of |
| the other legal values, input lines are only terminated by the given |
| string, and the line ending is returned to the caller untranslated. |
| |
| * On output, if newline is None, any '\n' characters written are |
| translated to the system default line separator, os.linesep. If |
| newline is '' or '\n', no translation takes place. If newline is any |
| of the other legal values, any '\n' characters written are translated |
| to the given string. |
| |
| If closefd is False, the underlying file descriptor will be kept open |
| when the file is closed. This does not work when a file name is given |
| and must be True in that case. |
| |
| A custom opener can be used by passing a callable as *opener*. The |
| underlying file descriptor for the file object is then obtained by |
| calling *opener* with (*file*, *flags*). *opener* must return an open |
| file descriptor (passing os.open as *opener* results in functionality |
| similar to passing None). |
| |
| open() returns a file object whose type depends on the mode, and |
| through which the standard file operations such as reading and writing |
| are performed. When open() is used to open a file in a text mode ('w', |
| 'r', 'wt', 'rt', etc.), it returns a TextIOWrapper. When used to open |
| a file in a binary mode, the returned class varies: in read binary |
| mode, it returns a BufferedReader; in write binary and append binary |
| modes, it returns a BufferedWriter, and in read/write mode, it returns |
| a BufferedRandom. |
| |
| It is also possible to use a string or bytearray as a file for both |
| reading and writing. For strings StringIO can be used like a file |
| opened in a text mode, and for bytes a BytesIO can be used like a file |
| opened in a binary mode. |
| [clinic start generated code]*/ |
| |
| static PyObject * |
| _io_open_impl(PyModuleDef *module, PyObject *file, const char *mode, |
| int buffering, const char *encoding, const char *errors, |
| const char *newline, int closefd, PyObject *opener) |
| /*[clinic end generated code: output=7615d0d746eb14d2 input=f4e1ca75223987bc]*/ |
| { |
| unsigned i; |
| |
| int creating = 0, reading = 0, writing = 0, appending = 0, updating = 0; |
| int text = 0, binary = 0, universal = 0; |
| |
| char rawmode[6], *m; |
| int line_buffering, isatty; |
| |
| PyObject *raw, *modeobj = NULL, *buffer, *wrapper, *result = NULL; |
| |
| _Py_IDENTIFIER(_blksize); |
| _Py_IDENTIFIER(isatty); |
| _Py_IDENTIFIER(mode); |
| _Py_IDENTIFIER(close); |
| |
| if (!PyUnicode_Check(file) && |
| !PyBytes_Check(file) && |
| !PyNumber_Check(file)) { |
| PyErr_Format(PyExc_TypeError, "invalid file: %R", file); |
| return NULL; |
| } |
| |
| /* Decode mode */ |
| for (i = 0; i < strlen(mode); i++) { |
| char c = mode[i]; |
| |
| switch (c) { |
| case 'x': |
| creating = 1; |
| break; |
| case 'r': |
| reading = 1; |
| break; |
| case 'w': |
| writing = 1; |
| break; |
| case 'a': |
| appending = 1; |
| break; |
| case '+': |
| updating = 1; |
| break; |
| case 't': |
| text = 1; |
| break; |
| case 'b': |
| binary = 1; |
| break; |
| case 'U': |
| universal = 1; |
| reading = 1; |
| break; |
| default: |
| goto invalid_mode; |
| } |
| |
| /* c must not be duplicated */ |
| if (strchr(mode+i+1, c)) { |
| invalid_mode: |
| PyErr_Format(PyExc_ValueError, "invalid mode: '%s'", mode); |
| return NULL; |
| } |
| |
| } |
| |
| m = rawmode; |
| if (creating) *(m++) = 'x'; |
| if (reading) *(m++) = 'r'; |
| if (writing) *(m++) = 'w'; |
| if (appending) *(m++) = 'a'; |
| if (updating) *(m++) = '+'; |
| *m = '\0'; |
| |
| /* Parameters validation */ |
| if (universal) { |
| if (writing || appending) { |
| PyErr_SetString(PyExc_ValueError, |
| "can't use U and writing mode at once"); |
| return NULL; |
| } |
| if (PyErr_WarnEx(PyExc_DeprecationWarning, |
| "'U' mode is deprecated", 1) < 0) |
| return NULL; |
| reading = 1; |
| } |
| |
| if (text && binary) { |
| PyErr_SetString(PyExc_ValueError, |
| "can't have text and binary mode at once"); |
| return NULL; |
| } |
| |
| if (creating + reading + writing + appending > 1) { |
| PyErr_SetString(PyExc_ValueError, |
| "must have exactly one of create/read/write/append mode"); |
| return NULL; |
| } |
| |
| if (binary && encoding != NULL) { |
| PyErr_SetString(PyExc_ValueError, |
| "binary mode doesn't take an encoding argument"); |
| return NULL; |
| } |
| |
| if (binary && errors != NULL) { |
| PyErr_SetString(PyExc_ValueError, |
| "binary mode doesn't take an errors argument"); |
| return NULL; |
| } |
| |
| if (binary && newline != NULL) { |
| PyErr_SetString(PyExc_ValueError, |
| "binary mode doesn't take a newline argument"); |
| return NULL; |
| } |
| |
| /* Create the Raw file stream */ |
| raw = PyObject_CallFunction((PyObject *)&PyFileIO_Type, |
| "OsiO", file, rawmode, closefd, opener); |
| if (raw == NULL) |
| return NULL; |
| result = raw; |
| |
| modeobj = PyUnicode_FromString(mode); |
| if (modeobj == NULL) |
| goto error; |
| |
| /* buffering */ |
| { |
| PyObject *res = _PyObject_CallMethodId(raw, &PyId_isatty, NULL); |
| if (res == NULL) |
| goto error; |
| isatty = PyLong_AsLong(res); |
| Py_DECREF(res); |
| if (isatty == -1 && PyErr_Occurred()) |
| goto error; |
| } |
| |
| if (buffering == 1 || (buffering < 0 && isatty)) { |
| buffering = -1; |
| line_buffering = 1; |
| } |
| else |
| line_buffering = 0; |
| |
| if (buffering < 0) { |
| PyObject *blksize_obj; |
| blksize_obj = _PyObject_GetAttrId(raw, &PyId__blksize); |
| if (blksize_obj == NULL) |
| goto error; |
| buffering = PyLong_AsLong(blksize_obj); |
| Py_DECREF(blksize_obj); |
| if (buffering == -1 && PyErr_Occurred()) |
| goto error; |
| } |
| if (buffering < 0) { |
| PyErr_SetString(PyExc_ValueError, |
| "invalid buffering size"); |
| goto error; |
| } |
| |
| /* if not buffering, returns the raw file object */ |
| if (buffering == 0) { |
| if (!binary) { |
| PyErr_SetString(PyExc_ValueError, |
| "can't have unbuffered text I/O"); |
| goto error; |
| } |
| |
| Py_DECREF(modeobj); |
| return result; |
| } |
| |
| /* wraps into a buffered file */ |
| { |
| PyObject *Buffered_class; |
| |
| if (updating) |
| Buffered_class = (PyObject *)&PyBufferedRandom_Type; |
| else if (creating || writing || appending) |
| Buffered_class = (PyObject *)&PyBufferedWriter_Type; |
| else if (reading) |
| Buffered_class = (PyObject *)&PyBufferedReader_Type; |
| else { |
| PyErr_Format(PyExc_ValueError, |
| "unknown mode: '%s'", mode); |
| goto error; |
| } |
| |
| buffer = PyObject_CallFunction(Buffered_class, "Oi", raw, buffering); |
| } |
| if (buffer == NULL) |
| goto error; |
| result = buffer; |
| Py_DECREF(raw); |
| |
| |
| /* if binary, returns the buffered file */ |
| if (binary) { |
| Py_DECREF(modeobj); |
| return result; |
| } |
| |
| /* wraps into a TextIOWrapper */ |
| wrapper = PyObject_CallFunction((PyObject *)&PyTextIOWrapper_Type, |
| "Osssi", |
| buffer, |
| encoding, errors, newline, |
| line_buffering); |
| if (wrapper == NULL) |
| goto error; |
| result = wrapper; |
| Py_DECREF(buffer); |
| |
| if (_PyObject_SetAttrId(wrapper, &PyId_mode, modeobj) < 0) |
| goto error; |
| Py_DECREF(modeobj); |
| return result; |
| |
| error: |
| if (result != NULL) { |
| PyObject *exc, *val, *tb, *close_result; |
| PyErr_Fetch(&exc, &val, &tb); |
| close_result = _PyObject_CallMethodId(result, &PyId_close, NULL); |
| _PyErr_ChainExceptions(exc, val, tb); |
| Py_XDECREF(close_result); |
| Py_DECREF(result); |
| } |
| Py_XDECREF(modeobj); |
| return NULL; |
| } |
| |
| /* |
| * Private helpers for the io module. |
| */ |
| |
| Py_off_t |
| PyNumber_AsOff_t(PyObject *item, PyObject *err) |
| { |
| Py_off_t result; |
| PyObject *runerr; |
| PyObject *value = PyNumber_Index(item); |
| if (value == NULL) |
| return -1; |
| |
| /* We're done if PyLong_AsSsize_t() returns without error. */ |
| result = PyLong_AsOff_t(value); |
| if (result != -1 || !(runerr = PyErr_Occurred())) |
| goto finish; |
| |
| /* Error handling code -- only manage OverflowError differently */ |
| if (!PyErr_GivenExceptionMatches(runerr, PyExc_OverflowError)) |
| goto finish; |
| |
| PyErr_Clear(); |
| /* If no error-handling desired then the default clipping |
| is sufficient. |
| */ |
| if (!err) { |
| assert(PyLong_Check(value)); |
| /* Whether or not it is less than or equal to |
| zero is determined by the sign of ob_size |
| */ |
| if (_PyLong_Sign(value) < 0) |
| result = PY_OFF_T_MIN; |
| else |
| result = PY_OFF_T_MAX; |
| } |
| else { |
| /* Otherwise replace the error with caller's error object. */ |
| PyErr_Format(err, |
| "cannot fit '%.200s' into an offset-sized integer", |
| item->ob_type->tp_name); |
| } |
| |
| finish: |
| Py_DECREF(value); |
| return result; |
| } |
| |
| |
| /* Basically the "n" format code with the ability to turn None into -1. */ |
| int |
| _PyIO_ConvertSsize_t(PyObject *obj, void *result) { |
| Py_ssize_t limit; |
| if (obj == Py_None) { |
| limit = -1; |
| } |
| else if (PyNumber_Check(obj)) { |
| limit = PyNumber_AsSsize_t(obj, PyExc_OverflowError); |
| if (limit == -1 && PyErr_Occurred()) |
| return 0; |
| } |
| else { |
| PyErr_Format(PyExc_TypeError, |
| "integer argument expected, got '%.200s'", |
| Py_TYPE(obj)->tp_name); |
| return 0; |
| } |
| *((Py_ssize_t *)result) = limit; |
| return 1; |
| } |
| |
| |
| _PyIO_State * |
| _PyIO_get_module_state(void) |
| { |
| PyObject *mod = PyState_FindModule(&_PyIO_Module); |
| _PyIO_State *state; |
| if (mod == NULL || (state = IO_MOD_STATE(mod)) == NULL) { |
| PyErr_SetString(PyExc_RuntimeError, |
| "could not find io module state " |
| "(interpreter shutdown?)"); |
| return NULL; |
| } |
| return state; |
| } |
| |
| PyObject * |
| _PyIO_get_locale_module(_PyIO_State *state) |
| { |
| PyObject *mod; |
| if (state->locale_module != NULL) { |
| assert(PyWeakref_CheckRef(state->locale_module)); |
| mod = PyWeakref_GET_OBJECT(state->locale_module); |
| if (mod != Py_None) { |
| Py_INCREF(mod); |
| return mod; |
| } |
| Py_CLEAR(state->locale_module); |
| } |
| mod = PyImport_ImportModule("_bootlocale"); |
| if (mod == NULL) |
| return NULL; |
| state->locale_module = PyWeakref_NewRef(mod, NULL); |
| if (state->locale_module == NULL) { |
| Py_DECREF(mod); |
| return NULL; |
| } |
| return mod; |
| } |
| |
| |
| static int |
| iomodule_traverse(PyObject *mod, visitproc visit, void *arg) { |
| _PyIO_State *state = IO_MOD_STATE(mod); |
| if (!state->initialized) |
| return 0; |
| if (state->locale_module != NULL) { |
| Py_VISIT(state->locale_module); |
| } |
| Py_VISIT(state->unsupported_operation); |
| return 0; |
| } |
| |
| |
| static int |
| iomodule_clear(PyObject *mod) { |
| _PyIO_State *state = IO_MOD_STATE(mod); |
| if (!state->initialized) |
| return 0; |
| if (state->locale_module != NULL) |
| Py_CLEAR(state->locale_module); |
| Py_CLEAR(state->unsupported_operation); |
| return 0; |
| } |
| |
| static void |
| iomodule_free(PyObject *mod) { |
| iomodule_clear(mod); |
| } |
| |
| |
| /* |
| * Module definition |
| */ |
| |
| #include "clinic/_iomodule.c.h" |
| |
| static PyMethodDef module_methods[] = { |
| _IO_OPEN_METHODDEF |
| {NULL, NULL} |
| }; |
| |
| struct PyModuleDef _PyIO_Module = { |
| PyModuleDef_HEAD_INIT, |
| "io", |
| module_doc, |
| sizeof(_PyIO_State), |
| module_methods, |
| NULL, |
| iomodule_traverse, |
| iomodule_clear, |
| (freefunc)iomodule_free, |
| }; |
| |
| PyMODINIT_FUNC |
| PyInit__io(void) |
| { |
| PyObject *m = PyModule_Create(&_PyIO_Module); |
| _PyIO_State *state = NULL; |
| if (m == NULL) |
| return NULL; |
| state = IO_MOD_STATE(m); |
| state->initialized = 0; |
| |
| #define ADD_TYPE(type, name) \ |
| if (PyType_Ready(type) < 0) \ |
| goto fail; \ |
| Py_INCREF(type); \ |
| if (PyModule_AddObject(m, name, (PyObject *)type) < 0) { \ |
| Py_DECREF(type); \ |
| goto fail; \ |
| } |
| |
| /* DEFAULT_BUFFER_SIZE */ |
| if (PyModule_AddIntMacro(m, DEFAULT_BUFFER_SIZE) < 0) |
| goto fail; |
| |
| /* UnsupportedOperation inherits from ValueError and IOError */ |
| state->unsupported_operation = PyObject_CallFunction( |
| (PyObject *)&PyType_Type, "s(OO){}", |
| "UnsupportedOperation", PyExc_ValueError, PyExc_IOError); |
| if (state->unsupported_operation == NULL) |
| goto fail; |
| Py_INCREF(state->unsupported_operation); |
| if (PyModule_AddObject(m, "UnsupportedOperation", |
| state->unsupported_operation) < 0) |
| goto fail; |
| |
| /* BlockingIOError, for compatibility */ |
| Py_INCREF(PyExc_BlockingIOError); |
| if (PyModule_AddObject(m, "BlockingIOError", |
| (PyObject *) PyExc_BlockingIOError) < 0) |
| goto fail; |
| |
| /* Concrete base types of the IO ABCs. |
| (the ABCs themselves are declared through inheritance in io.py) |
| */ |
| ADD_TYPE(&PyIOBase_Type, "_IOBase"); |
| ADD_TYPE(&PyRawIOBase_Type, "_RawIOBase"); |
| ADD_TYPE(&PyBufferedIOBase_Type, "_BufferedIOBase"); |
| ADD_TYPE(&PyTextIOBase_Type, "_TextIOBase"); |
| |
| /* Implementation of concrete IO objects. */ |
| /* FileIO */ |
| PyFileIO_Type.tp_base = &PyRawIOBase_Type; |
| ADD_TYPE(&PyFileIO_Type, "FileIO"); |
| |
| /* BytesIO */ |
| PyBytesIO_Type.tp_base = &PyBufferedIOBase_Type; |
| ADD_TYPE(&PyBytesIO_Type, "BytesIO"); |
| if (PyType_Ready(&_PyBytesIOBuffer_Type) < 0) |
| goto fail; |
| |
| /* StringIO */ |
| PyStringIO_Type.tp_base = &PyTextIOBase_Type; |
| ADD_TYPE(&PyStringIO_Type, "StringIO"); |
| |
| /* BufferedReader */ |
| PyBufferedReader_Type.tp_base = &PyBufferedIOBase_Type; |
| ADD_TYPE(&PyBufferedReader_Type, "BufferedReader"); |
| |
| /* BufferedWriter */ |
| PyBufferedWriter_Type.tp_base = &PyBufferedIOBase_Type; |
| ADD_TYPE(&PyBufferedWriter_Type, "BufferedWriter"); |
| |
| /* BufferedRWPair */ |
| PyBufferedRWPair_Type.tp_base = &PyBufferedIOBase_Type; |
| ADD_TYPE(&PyBufferedRWPair_Type, "BufferedRWPair"); |
| |
| /* BufferedRandom */ |
| PyBufferedRandom_Type.tp_base = &PyBufferedIOBase_Type; |
| ADD_TYPE(&PyBufferedRandom_Type, "BufferedRandom"); |
| |
| /* TextIOWrapper */ |
| PyTextIOWrapper_Type.tp_base = &PyTextIOBase_Type; |
| ADD_TYPE(&PyTextIOWrapper_Type, "TextIOWrapper"); |
| |
| /* IncrementalNewlineDecoder */ |
| ADD_TYPE(&PyIncrementalNewlineDecoder_Type, "IncrementalNewlineDecoder"); |
| |
| /* Interned strings */ |
| #define ADD_INTERNED(name) \ |
| if (!_PyIO_str_ ## name && \ |
| !(_PyIO_str_ ## name = PyUnicode_InternFromString(# name))) \ |
| goto fail; |
| |
| ADD_INTERNED(close) |
| ADD_INTERNED(closed) |
| ADD_INTERNED(decode) |
| ADD_INTERNED(encode) |
| ADD_INTERNED(fileno) |
| ADD_INTERNED(flush) |
| ADD_INTERNED(getstate) |
| ADD_INTERNED(isatty) |
| ADD_INTERNED(newlines) |
| ADD_INTERNED(read) |
| ADD_INTERNED(read1) |
| ADD_INTERNED(readable) |
| ADD_INTERNED(readall) |
| ADD_INTERNED(readinto) |
| ADD_INTERNED(readline) |
| ADD_INTERNED(reset) |
| ADD_INTERNED(seek) |
| ADD_INTERNED(seekable) |
| ADD_INTERNED(setstate) |
| ADD_INTERNED(tell) |
| ADD_INTERNED(truncate) |
| ADD_INTERNED(write) |
| ADD_INTERNED(writable) |
| |
| if (!_PyIO_str_nl && |
| !(_PyIO_str_nl = PyUnicode_InternFromString("\n"))) |
| goto fail; |
| |
| if (!_PyIO_empty_str && |
| !(_PyIO_empty_str = PyUnicode_FromStringAndSize(NULL, 0))) |
| goto fail; |
| if (!_PyIO_empty_bytes && |
| !(_PyIO_empty_bytes = PyBytes_FromStringAndSize(NULL, 0))) |
| goto fail; |
| if (!_PyIO_zero && |
| !(_PyIO_zero = PyLong_FromLong(0L))) |
| goto fail; |
| |
| state->initialized = 1; |
| |
| return m; |
| |
| fail: |
| Py_XDECREF(state->unsupported_operation); |
| Py_DECREF(m); |
| return NULL; |
| } |