| /* | |
| 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_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" | |
| "seperation between reading and writing to streams; implementations are\n" | |
| "allowed to throw 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 a 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" | |
| ); | |
| /* | |
| * BlockingIOError extends IOError | |
| */ | |
| static int | |
| blockingioerror_init(PyBlockingIOErrorObject *self, PyObject *args, | |
| PyObject *kwds) | |
| { | |
| PyObject *myerrno = NULL, *strerror = NULL; | |
| PyObject *baseargs = NULL; | |
| Py_ssize_t written = 0; | |
| assert(PyTuple_Check(args)); | |
| self->written = 0; | |
| if (!PyArg_ParseTuple(args, "OO|n:BlockingIOError", | |
| &myerrno, &strerror, &written)) | |
| return -1; | |
| baseargs = PyTuple_Pack(2, myerrno, strerror); | |
| if (baseargs == NULL) | |
| return -1; | |
| /* This will take care of initializing of myerrno and strerror members */ | |
| if (((PyTypeObject *)PyExc_IOError)->tp_init( | |
| (PyObject *)self, baseargs, kwds) == -1) { | |
| Py_DECREF(baseargs); | |
| return -1; | |
| } | |
| Py_DECREF(baseargs); | |
| self->written = written; | |
| return 0; | |
| } | |
| static PyMemberDef blockingioerror_members[] = { | |
| {"characters_written", T_PYSSIZET, offsetof(PyBlockingIOErrorObject, written), 0}, | |
| {NULL} /* Sentinel */ | |
| }; | |
| static PyTypeObject _PyExc_BlockingIOError = { | |
| PyVarObject_HEAD_INIT(NULL, 0) | |
| "BlockingIOError", /*tp_name*/ | |
| sizeof(PyBlockingIOErrorObject), /*tp_basicsize*/ | |
| 0, /*tp_itemsize*/ | |
| 0, /*tp_dealloc*/ | |
| 0, /*tp_print*/ | |
| 0, /*tp_getattr*/ | |
| 0, /*tp_setattr*/ | |
| 0, /*tp_compare */ | |
| 0, /*tp_repr*/ | |
| 0, /*tp_as_number*/ | |
| 0, /*tp_as_sequence*/ | |
| 0, /*tp_as_mapping*/ | |
| 0, /*tp_hash */ | |
| 0, /*tp_call*/ | |
| 0, /*tp_str*/ | |
| 0, /*tp_getattro*/ | |
| 0, /*tp_setattro*/ | |
| 0, /*tp_as_buffer*/ | |
| Py_TPFLAGS_DEFAULT | Py_TPFLAGS_BASETYPE, /*tp_flags*/ | |
| PyDoc_STR("Exception raised when I/O would block " | |
| "on a non-blocking I/O stream"), /* tp_doc */ | |
| 0, /* tp_traverse */ | |
| 0, /* tp_clear */ | |
| 0, /* tp_richcompare */ | |
| 0, /* tp_weaklistoffset */ | |
| 0, /* tp_iter */ | |
| 0, /* tp_iternext */ | |
| 0, /* tp_methods */ | |
| blockingioerror_members, /* tp_members */ | |
| 0, /* tp_getset */ | |
| 0, /* tp_base */ | |
| 0, /* tp_dict */ | |
| 0, /* tp_descr_get */ | |
| 0, /* tp_descr_set */ | |
| 0, /* tp_dictoffset */ | |
| (initproc)blockingioerror_init, /* tp_init */ | |
| 0, /* tp_alloc */ | |
| 0, /* tp_new */ | |
| }; | |
| PyObject *PyExc_BlockingIOError = (PyObject *)&_PyExc_BlockingIOError; | |
| /* | |
| * The main open() function | |
| */ | |
| PyDoc_STRVAR(open_doc, | |
| "Open file and return a stream. Raise IOError upon failure.\n" | |
| "\n" | |
| "file is either a text or byte string giving the name (and the path\n" | |
| "if the file isn't in the current working directory) of the file to\n" | |
| "be opened or an integer file descriptor of the file to be\n" | |
| "wrapped. (If a file descriptor is given, it is closed when the\n" | |
| "returned I/O object is closed, unless closefd is set to False.)\n" | |
| "\n" | |
| "mode is an optional string that specifies the mode in which the file\n" | |
| "is opened. It defaults to 'r' which means open for reading in text\n" | |
| "mode. Other common values are 'w' for writing (truncating the file if\n" | |
| "it already exists), and 'a' for appending (which on some Unix systems,\n" | |
| "means that all writes append to the end of the file regardless of the\n" | |
| "current seek position). In text mode, if encoding is not specified the\n" | |
| "encoding used is platform dependent. (For reading and writing raw\n" | |
| "bytes use binary mode and leave encoding unspecified.) The available\n" | |
| "modes are:\n" | |
| "\n" | |
| "========= ===============================================================\n" | |
| "Character Meaning\n" | |
| "--------- ---------------------------------------------------------------\n" | |
| "'r' open for reading (default)\n" | |
| "'w' open for writing, truncating the file first\n" | |
| "'a' open for writing, appending to the end of the file if it exists\n" | |
| "'b' binary mode\n" | |
| "'t' text mode (default)\n" | |
| "'+' open a disk file for updating (reading and writing)\n" | |
| "'U' universal newline mode (for backwards compatibility; unneeded\n" | |
| " for new code)\n" | |
| "========= ===============================================================\n" | |
| "\n" | |
| "The default mode is 'rt' (open for reading text). For binary random\n" | |
| "access, the mode 'w+b' opens and truncates the file to 0 bytes, while\n" | |
| "'r+b' opens the file without truncation.\n" | |
| "\n" | |
| "Python distinguishes between files opened in binary and text modes,\n" | |
| "even when the underlying operating system doesn't. Files opened in\n" | |
| "binary mode (appending 'b' to the mode argument) return contents as\n" | |
| "bytes objects without any decoding. In text mode (the default, or when\n" | |
| "'t' is appended to the mode argument), the contents of the file are\n" | |
| "returned as strings, the bytes having been first decoded using a\n" | |
| "platform-dependent encoding or using the specified encoding if given.\n" | |
| "\n" | |
| "buffering is an optional integer used to set the buffering policy.\n" | |
| "Pass 0 to switch buffering off (only allowed in binary mode), 1 to select\n" | |
| "line buffering (only usable in text mode), and an integer > 1 to indicate\n" | |
| "the size of a fixed-size chunk buffer. When no buffering argument is\n" | |
| "given, the default buffering policy works as follows:\n" | |
| "\n" | |
| "* Binary files are buffered in fixed-size chunks; the size of the buffer\n" | |
| " is chosen using a heuristic trying to determine the underlying device's\n" | |
| " \"block size\" and falling back on `io.DEFAULT_BUFFER_SIZE`.\n" | |
| " On many systems, the buffer will typically be 4096 or 8192 bytes long.\n" | |
| "\n" | |
| "* \"Interactive\" text files (files for which isatty() returns True)\n" | |
| " use line buffering. Other text files use the policy described above\n" | |
| " for binary files.\n" | |
| "\n" | |
| "encoding is the name of the encoding used to decode or encode the\n" | |
| "file. This should only be used in text mode. The default encoding is\n" | |
| "platform dependent, but any encoding supported by Python can be\n" | |
| "passed. See the codecs module for the list of supported encodings.\n" | |
| "\n" | |
| "errors is an optional string that specifies how encoding errors are to\n" | |
| "be handled---this argument should not be used in binary mode. Pass\n" | |
| "'strict' to raise a ValueError exception if there is an encoding error\n" | |
| "(the default of None has the same effect), or pass 'ignore' to ignore\n" | |
| "errors. (Note that ignoring encoding errors can lead to data loss.)\n" | |
| "See the documentation for codecs.register for a list of the permitted\n" | |
| "encoding error strings.\n" | |
| "\n" | |
| "newline controls how universal newlines works (it only applies to text\n" | |
| "mode). It can be None, '', '\\n', '\\r', and '\\r\\n'. It works as\n" | |
| "follows:\n" | |
| "\n" | |
| "* On input, if newline is None, universal newlines mode is\n" | |
| " enabled. Lines in the input can end in '\\n', '\\r', or '\\r\\n', and\n" | |
| " these are translated into '\\n' before being returned to the\n" | |
| " caller. If it is '', universal newline mode is enabled, but line\n" | |
| " endings are returned to the caller untranslated. If it has any of\n" | |
| " the other legal values, input lines are only terminated by the given\n" | |
| " string, and the line ending is returned to the caller untranslated.\n" | |
| "\n" | |
| "* On output, if newline is None, any '\\n' characters written are\n" | |
| " translated to the system default line separator, os.linesep. If\n" | |
| " newline is '', no translation takes place. If newline is any of the\n" | |
| " other legal values, any '\\n' characters written are translated to\n" | |
| " the given string.\n" | |
| "\n" | |
| "If closefd is False, the underlying file descriptor will be kept open\n" | |
| "when the file is closed. This does not work when a file name is given\n" | |
| "and must be True in that case.\n" | |
| "\n" | |
| "open() returns a file object whose type depends on the mode, and\n" | |
| "through which the standard file operations such as reading and writing\n" | |
| "are performed. When open() is used to open a file in a text mode ('w',\n" | |
| "'r', 'wt', 'rt', etc.), it returns a TextIOWrapper. When used to open\n" | |
| "a file in a binary mode, the returned class varies: in read binary\n" | |
| "mode, it returns a BufferedReader; in write binary and append binary\n" | |
| "modes, it returns a BufferedWriter, and in read/write mode, it returns\n" | |
| "a BufferedRandom.\n" | |
| "\n" | |
| "It is also possible to use a string or bytearray as a file for both\n" | |
| "reading and writing. For strings StringIO can be used like a file\n" | |
| "opened in a text mode, and for bytes a BytesIO can be used like a file\n" | |
| "opened in a binary mode.\n" | |
| ); | |
| static PyObject * | |
| io_open(PyObject *self, PyObject *args, PyObject *kwds) | |
| { | |
| char *kwlist[] = {"file", "mode", "buffering", | |
| "encoding", "errors", "newline", | |
| "closefd", NULL}; | |
| PyObject *file; | |
| char *mode = "r"; | |
| int buffering = -1, closefd = 1; | |
| char *encoding = NULL, *errors = NULL, *newline = NULL; | |
| unsigned i; | |
| int reading = 0, writing = 0, appending = 0, updating = 0; | |
| int text = 0, binary = 0, universal = 0; | |
| char rawmode[5], *m; | |
| int line_buffering, isatty; | |
| PyObject *raw, *modeobj = NULL, *buffer = NULL, *wrapper = NULL; | |
| if (!PyArg_ParseTupleAndKeywords(args, kwds, "O|sizzzi:open", kwlist, | |
| &file, &mode, &buffering, | |
| &encoding, &errors, &newline, | |
| &closefd)) { | |
| return NULL; | |
| } | |
| if (!PyUnicode_Check(file) && | |
| !PyBytes_Check(file) && | |
| !PyNumber_Check(file)) { | |
| PyObject *repr = PyObject_Repr(file); | |
| if (repr != NULL) { | |
| PyErr_Format(PyExc_TypeError, "invalid file: %s", | |
| PyString_AS_STRING(repr)); | |
| Py_DECREF(repr); | |
| } | |
| return NULL; | |
| } | |
| /* Decode mode */ | |
| for (i = 0; i < strlen(mode); i++) { | |
| char c = mode[i]; | |
| switch (c) { | |
| 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 (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; | |
| } | |
| reading = 1; | |
| } | |
| if (text && binary) { | |
| PyErr_SetString(PyExc_ValueError, | |
| "can't have text and binary mode at once"); | |
| return NULL; | |
| } | |
| if (reading + writing + appending > 1) { | |
| PyErr_SetString(PyExc_ValueError, | |
| "must have exactly one of 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, | |
| "Osi", file, rawmode, closefd); | |
| if (raw == NULL) | |
| return NULL; | |
| modeobj = PyUnicode_FromString(mode); | |
| if (modeobj == NULL) | |
| goto error; | |
| /* buffering */ | |
| { | |
| PyObject *res = PyObject_CallMethod(raw, "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) { | |
| buffering = DEFAULT_BUFFER_SIZE; | |
| #ifdef HAVE_STRUCT_STAT_ST_BLKSIZE | |
| { | |
| struct stat st; | |
| long fileno; | |
| PyObject *res = PyObject_CallMethod(raw, "fileno", NULL); | |
| if (res == NULL) | |
| goto error; | |
| fileno = PyInt_AsLong(res); | |
| Py_DECREF(res); | |
| if (fileno == -1 && PyErr_Occurred()) | |
| goto error; | |
| if (fstat(fileno, &st) >= 0 && st.st_blksize > 1) | |
| buffering = st.st_blksize; | |
| } | |
| #endif | |
| } | |
| 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 raw; | |
| } | |
| /* wraps into a buffered file */ | |
| { | |
| PyObject *Buffered_class; | |
| if (updating) | |
| Buffered_class = (PyObject *)&PyBufferedRandom_Type; | |
| else if (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); | |
| } | |
| Py_CLEAR(raw); | |
| if (buffer == NULL) | |
| goto error; | |
| /* if binary, returns the buffered file */ | |
| if (binary) { | |
| Py_DECREF(modeobj); | |
| return buffer; | |
| } | |
| /* wraps into a TextIOWrapper */ | |
| wrapper = PyObject_CallFunction((PyObject *)&PyTextIOWrapper_Type, | |
| "Osssi", | |
| buffer, | |
| encoding, errors, newline, | |
| line_buffering); | |
| Py_CLEAR(buffer); | |
| if (wrapper == NULL) | |
| goto error; | |
| if (PyObject_SetAttrString(wrapper, "mode", modeobj) < 0) | |
| goto error; | |
| Py_DECREF(modeobj); | |
| return wrapper; | |
| error: | |
| Py_XDECREF(raw); | |
| Py_XDECREF(modeobj); | |
| Py_XDECREF(buffer); | |
| Py_XDECREF(wrapper); | |
| 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; | |
| if (PyInt_Check(value)) { | |
| /* We assume a long always fits in a Py_off_t... */ | |
| result = (Py_off_t) PyInt_AS_LONG(value); | |
| goto finish; | |
| } | |
| /* 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; | |
| } | |
| /* | |
| * Module definition | |
| */ | |
| PyObject *_PyIO_os_module = NULL; | |
| PyObject *_PyIO_locale_module = NULL; | |
| PyObject *_PyIO_unsupported_operation = NULL; | |
| static PyMethodDef module_methods[] = { | |
| {"open", (PyCFunction)io_open, METH_VARARGS|METH_KEYWORDS, open_doc}, | |
| {NULL, NULL} | |
| }; | |
| PyMODINIT_FUNC | |
| init_io(void) | |
| { | |
| PyObject *m = Py_InitModule4("_io", module_methods, | |
| module_doc, NULL, PYTHON_API_VERSION); | |
| if (m == NULL) | |
| return; | |
| /* put os in the module state */ | |
| _PyIO_os_module = PyImport_ImportModule("os"); | |
| if (_PyIO_os_module == NULL) | |
| goto fail; | |
| #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 */ | |
| _PyIO_unsupported_operation = PyObject_CallFunction( | |
| (PyObject *)&PyType_Type, "s(OO){}", | |
| "UnsupportedOperation", PyExc_ValueError, PyExc_IOError); | |
| if (_PyIO_unsupported_operation == NULL) | |
| goto fail; | |
| Py_INCREF(_PyIO_unsupported_operation); | |
| if (PyModule_AddObject(m, "UnsupportedOperation", | |
| _PyIO_unsupported_operation) < 0) | |
| goto fail; | |
| /* BlockingIOError */ | |
| _PyExc_BlockingIOError.tp_base = (PyTypeObject *) PyExc_IOError; | |
| ADD_TYPE(&_PyExc_BlockingIOError, "BlockingIOError"); | |
| /* 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"); | |
| /* 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 */ | |
| if (!(_PyIO_str_close = PyString_InternFromString("close"))) | |
| goto fail; | |
| if (!(_PyIO_str_closed = PyString_InternFromString("closed"))) | |
| goto fail; | |
| if (!(_PyIO_str_decode = PyString_InternFromString("decode"))) | |
| goto fail; | |
| if (!(_PyIO_str_encode = PyString_InternFromString("encode"))) | |
| goto fail; | |
| if (!(_PyIO_str_fileno = PyString_InternFromString("fileno"))) | |
| goto fail; | |
| if (!(_PyIO_str_flush = PyString_InternFromString("flush"))) | |
| goto fail; | |
| if (!(_PyIO_str_getstate = PyString_InternFromString("getstate"))) | |
| goto fail; | |
| if (!(_PyIO_str_isatty = PyString_InternFromString("isatty"))) | |
| goto fail; | |
| if (!(_PyIO_str_newlines = PyString_InternFromString("newlines"))) | |
| goto fail; | |
| if (!(_PyIO_str_nl = PyString_InternFromString("\n"))) | |
| goto fail; | |
| if (!(_PyIO_str_read = PyString_InternFromString("read"))) | |
| goto fail; | |
| if (!(_PyIO_str_read1 = PyString_InternFromString("read1"))) | |
| goto fail; | |
| if (!(_PyIO_str_readable = PyString_InternFromString("readable"))) | |
| goto fail; | |
| if (!(_PyIO_str_readinto = PyString_InternFromString("readinto"))) | |
| goto fail; | |
| if (!(_PyIO_str_readline = PyString_InternFromString("readline"))) | |
| goto fail; | |
| if (!(_PyIO_str_reset = PyString_InternFromString("reset"))) | |
| goto fail; | |
| if (!(_PyIO_str_seek = PyString_InternFromString("seek"))) | |
| goto fail; | |
| if (!(_PyIO_str_seekable = PyString_InternFromString("seekable"))) | |
| goto fail; | |
| if (!(_PyIO_str_setstate = PyString_InternFromString("setstate"))) | |
| goto fail; | |
| if (!(_PyIO_str_tell = PyString_InternFromString("tell"))) | |
| goto fail; | |
| if (!(_PyIO_str_truncate = PyString_InternFromString("truncate"))) | |
| goto fail; | |
| if (!(_PyIO_str_write = PyString_InternFromString("write"))) | |
| goto fail; | |
| if (!(_PyIO_str_writable = PyString_InternFromString("writable"))) | |
| goto fail; | |
| if (!(_PyIO_empty_str = PyUnicode_FromStringAndSize(NULL, 0))) | |
| goto fail; | |
| if (!(_PyIO_empty_bytes = PyBytes_FromStringAndSize(NULL, 0))) | |
| goto fail; | |
| if (!(_PyIO_zero = PyLong_FromLong(0L))) | |
| goto fail; | |
| return; | |
| fail: | |
| Py_CLEAR(_PyIO_os_module); | |
| Py_CLEAR(_PyIO_unsupported_operation); | |
| Py_DECREF(m); | |
| } |