mirror of https://github.com/python/cpython
771 lines
24 KiB
C
771 lines
24 KiB
C
/*
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An implementation of the new I/O lib as defined by PEP 3116 - "New I/O"
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Classes defined here: UnsupportedOperation, BlockingIOError.
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Functions defined here: open().
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Mostly written by Amaury Forgeot d'Arc
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*/
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#define PY_SSIZE_T_CLEAN
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#include "Python.h"
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#include "structmember.h"
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#include "_iomodule.h"
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif /* HAVE_SYS_TYPES_H */
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#ifdef HAVE_SYS_STAT_H
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#include <sys/stat.h>
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#endif /* HAVE_SYS_STAT_H */
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/* Various interned strings */
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PyObject *_PyIO_str_close;
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PyObject *_PyIO_str_closed;
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PyObject *_PyIO_str_decode;
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PyObject *_PyIO_str_encode;
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PyObject *_PyIO_str_fileno;
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PyObject *_PyIO_str_flush;
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PyObject *_PyIO_str_getstate;
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PyObject *_PyIO_str_isatty;
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PyObject *_PyIO_str_newlines;
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PyObject *_PyIO_str_nl;
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PyObject *_PyIO_str_read;
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PyObject *_PyIO_str_read1;
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PyObject *_PyIO_str_readable;
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PyObject *_PyIO_str_readall;
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PyObject *_PyIO_str_readinto;
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PyObject *_PyIO_str_readline;
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PyObject *_PyIO_str_reset;
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PyObject *_PyIO_str_seek;
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PyObject *_PyIO_str_seekable;
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PyObject *_PyIO_str_setstate;
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PyObject *_PyIO_str_tell;
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PyObject *_PyIO_str_truncate;
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PyObject *_PyIO_str_writable;
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PyObject *_PyIO_str_write;
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PyObject *_PyIO_empty_str;
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PyObject *_PyIO_empty_bytes;
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PyObject *_PyIO_zero;
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PyDoc_STRVAR(module_doc,
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"The io module provides the Python interfaces to stream handling. The\n"
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"builtin open function is defined in this module.\n"
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"\n"
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"At the top of the I/O hierarchy is the abstract base class IOBase. It\n"
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"defines the basic interface to a stream. Note, however, that there is no\n"
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"separation between reading and writing to streams; implementations are\n"
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"allowed to raise an IOError if they do not support a given operation.\n"
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"\n"
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"Extending IOBase is RawIOBase which deals simply with the reading and\n"
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"writing of raw bytes to a stream. FileIO subclasses RawIOBase to provide\n"
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"an interface to OS files.\n"
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"\n"
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"BufferedIOBase deals with buffering on a raw byte stream (RawIOBase). Its\n"
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"subclasses, BufferedWriter, BufferedReader, and BufferedRWPair buffer\n"
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"streams that are readable, writable, and both respectively.\n"
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"BufferedRandom provides a buffered interface to random access\n"
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"streams. BytesIO is a simple stream of in-memory bytes.\n"
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"\n"
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"Another IOBase subclass, TextIOBase, deals with the encoding and decoding\n"
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"of streams into text. TextIOWrapper, which extends it, is a buffered text\n"
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"interface to a buffered raw stream (`BufferedIOBase`). Finally, StringIO\n"
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"is a in-memory stream for text.\n"
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"\n"
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"Argument names are not part of the specification, and only the arguments\n"
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"of open() are intended to be used as keyword arguments.\n"
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"\n"
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"data:\n"
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"\n"
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"DEFAULT_BUFFER_SIZE\n"
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"\n"
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" An int containing the default buffer size used by the module's buffered\n"
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" I/O classes. open() uses the file's blksize (as obtained by os.stat) if\n"
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" possible.\n"
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);
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/*
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* The main open() function
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*/
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/*[clinic input]
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module _io
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_io.open
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file: object
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mode: str = "r"
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buffering: int = -1
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encoding: str(accept={str, NoneType}) = NULL
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errors: str(accept={str, NoneType}) = NULL
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newline: str(accept={str, NoneType}) = NULL
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closefd: int(c_default="1") = True
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opener: object = None
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Open file and return a stream. Raise IOError upon failure.
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file is either a text or byte string giving the name (and the path
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if the file isn't in the current working directory) of the file to
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be opened or an integer file descriptor of the file to be
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wrapped. (If a file descriptor is given, it is closed when the
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returned I/O object is closed, unless closefd is set to False.)
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mode is an optional string that specifies the mode in which the file
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is opened. It defaults to 'r' which means open for reading in text
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mode. Other common values are 'w' for writing (truncating the file if
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it already exists), 'x' for creating and writing to a new file, and
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'a' for appending (which on some Unix systems, means that all writes
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append to the end of the file regardless of the current seek position).
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In text mode, if encoding is not specified the encoding used is platform
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dependent: locale.getpreferredencoding(False) is called to get the
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current locale encoding. (For reading and writing raw bytes use binary
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mode and leave encoding unspecified.) The available modes are:
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========= ===============================================================
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Character Meaning
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--------- ---------------------------------------------------------------
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'r' open for reading (default)
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'w' open for writing, truncating the file first
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'x' create a new file and open it for writing
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'a' open for writing, appending to the end of the file if it exists
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'b' binary mode
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't' text mode (default)
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'+' open a disk file for updating (reading and writing)
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'U' universal newline mode (deprecated)
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========= ===============================================================
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The default mode is 'rt' (open for reading text). For binary random
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access, the mode 'w+b' opens and truncates the file to 0 bytes, while
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'r+b' opens the file without truncation. The 'x' mode implies 'w' and
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raises an `FileExistsError` if the file already exists.
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Python distinguishes between files opened in binary and text modes,
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even when the underlying operating system doesn't. Files opened in
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binary mode (appending 'b' to the mode argument) return contents as
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bytes objects without any decoding. In text mode (the default, or when
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't' is appended to the mode argument), the contents of the file are
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returned as strings, the bytes having been first decoded using a
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platform-dependent encoding or using the specified encoding if given.
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'U' mode is deprecated and will raise an exception in future versions
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of Python. It has no effect in Python 3. Use newline to control
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universal newlines mode.
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buffering is an optional integer used to set the buffering policy.
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Pass 0 to switch buffering off (only allowed in binary mode), 1 to select
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line buffering (only usable in text mode), and an integer > 1 to indicate
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the size of a fixed-size chunk buffer. When no buffering argument is
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given, the default buffering policy works as follows:
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* Binary files are buffered in fixed-size chunks; the size of the buffer
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is chosen using a heuristic trying to determine the underlying device's
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"block size" and falling back on `io.DEFAULT_BUFFER_SIZE`.
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On many systems, the buffer will typically be 4096 or 8192 bytes long.
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* "Interactive" text files (files for which isatty() returns True)
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use line buffering. Other text files use the policy described above
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for binary files.
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encoding is the name of the encoding used to decode or encode the
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file. This should only be used in text mode. The default encoding is
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platform dependent, but any encoding supported by Python can be
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passed. See the codecs module for the list of supported encodings.
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errors is an optional string that specifies how encoding errors are to
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be handled---this argument should not be used in binary mode. Pass
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'strict' to raise a ValueError exception if there is an encoding error
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(the default of None has the same effect), or pass 'ignore' to ignore
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errors. (Note that ignoring encoding errors can lead to data loss.)
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See the documentation for codecs.register or run 'help(codecs.Codec)'
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for a list of the permitted encoding error strings.
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newline controls how universal newlines works (it only applies to text
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mode). It can be None, '', '\n', '\r', and '\r\n'. It works as
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follows:
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* On input, if newline is None, universal newlines mode is
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enabled. Lines in the input can end in '\n', '\r', or '\r\n', and
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these are translated into '\n' before being returned to the
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caller. If it is '', universal newline mode is enabled, but line
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endings are returned to the caller untranslated. If it has any of
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the other legal values, input lines are only terminated by the given
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string, and the line ending is returned to the caller untranslated.
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* On output, if newline is None, any '\n' characters written are
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translated to the system default line separator, os.linesep. If
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newline is '' or '\n', no translation takes place. If newline is any
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of the other legal values, any '\n' characters written are translated
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to the given string.
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If closefd is False, the underlying file descriptor will be kept open
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when the file is closed. This does not work when a file name is given
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and must be True in that case.
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A custom opener can be used by passing a callable as *opener*. The
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underlying file descriptor for the file object is then obtained by
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calling *opener* with (*file*, *flags*). *opener* must return an open
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file descriptor (passing os.open as *opener* results in functionality
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similar to passing None).
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open() returns a file object whose type depends on the mode, and
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through which the standard file operations such as reading and writing
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are performed. When open() is used to open a file in a text mode ('w',
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'r', 'wt', 'rt', etc.), it returns a TextIOWrapper. When used to open
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a file in a binary mode, the returned class varies: in read binary
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mode, it returns a BufferedReader; in write binary and append binary
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modes, it returns a BufferedWriter, and in read/write mode, it returns
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a BufferedRandom.
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It is also possible to use a string or bytearray as a file for both
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reading and writing. For strings StringIO can be used like a file
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opened in a text mode, and for bytes a BytesIO can be used like a file
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opened in a binary mode.
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[clinic start generated code]*/
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static PyObject *
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_io_open_impl(PyModuleDef *module, PyObject *file, const char *mode,
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int buffering, const char *encoding, const char *errors,
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const char *newline, int closefd, PyObject *opener)
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/*[clinic end generated code: output=7615d0d746eb14d2 input=f4e1ca75223987bc]*/
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{
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unsigned i;
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int creating = 0, reading = 0, writing = 0, appending = 0, updating = 0;
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int text = 0, binary = 0, universal = 0;
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char rawmode[6], *m;
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int line_buffering;
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long isatty;
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PyObject *raw, *modeobj = NULL, *buffer, *wrapper, *result = NULL;
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_Py_IDENTIFIER(_blksize);
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_Py_IDENTIFIER(isatty);
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_Py_IDENTIFIER(mode);
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_Py_IDENTIFIER(close);
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if (!PyUnicode_Check(file) &&
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!PyBytes_Check(file) &&
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!PyNumber_Check(file)) {
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PyErr_Format(PyExc_TypeError, "invalid file: %R", file);
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return NULL;
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}
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/* Decode mode */
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for (i = 0; i < strlen(mode); i++) {
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char c = mode[i];
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switch (c) {
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case 'x':
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creating = 1;
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break;
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case 'r':
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reading = 1;
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break;
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case 'w':
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writing = 1;
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break;
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case 'a':
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appending = 1;
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break;
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case '+':
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updating = 1;
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break;
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case 't':
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text = 1;
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break;
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case 'b':
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binary = 1;
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break;
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case 'U':
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universal = 1;
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reading = 1;
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break;
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default:
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goto invalid_mode;
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}
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/* c must not be duplicated */
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if (strchr(mode+i+1, c)) {
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invalid_mode:
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PyErr_Format(PyExc_ValueError, "invalid mode: '%s'", mode);
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return NULL;
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}
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}
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m = rawmode;
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if (creating) *(m++) = 'x';
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if (reading) *(m++) = 'r';
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if (writing) *(m++) = 'w';
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if (appending) *(m++) = 'a';
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if (updating) *(m++) = '+';
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*m = '\0';
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/* Parameters validation */
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if (universal) {
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if (creating || writing || appending || updating) {
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PyErr_SetString(PyExc_ValueError,
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"mode U cannot be combined with x', 'w', 'a', or '+'");
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return NULL;
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}
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if (PyErr_WarnEx(PyExc_DeprecationWarning,
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"'U' mode is deprecated", 1) < 0)
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return NULL;
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reading = 1;
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}
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if (text && binary) {
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PyErr_SetString(PyExc_ValueError,
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"can't have text and binary mode at once");
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return NULL;
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}
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if (creating + reading + writing + appending > 1) {
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PyErr_SetString(PyExc_ValueError,
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"must have exactly one of create/read/write/append mode");
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return NULL;
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}
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if (binary && encoding != NULL) {
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PyErr_SetString(PyExc_ValueError,
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"binary mode doesn't take an encoding argument");
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return NULL;
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}
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if (binary && errors != NULL) {
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PyErr_SetString(PyExc_ValueError,
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"binary mode doesn't take an errors argument");
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return NULL;
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}
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if (binary && newline != NULL) {
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PyErr_SetString(PyExc_ValueError,
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"binary mode doesn't take a newline argument");
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return NULL;
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}
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/* Create the Raw file stream */
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raw = PyObject_CallFunction((PyObject *)&PyFileIO_Type,
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"OsiO", file, rawmode, closefd, opener);
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if (raw == NULL)
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return NULL;
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result = raw;
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modeobj = PyUnicode_FromString(mode);
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if (modeobj == NULL)
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goto error;
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/* buffering */
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{
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PyObject *res = _PyObject_CallMethodId(raw, &PyId_isatty, NULL);
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if (res == NULL)
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goto error;
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isatty = PyLong_AsLong(res);
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Py_DECREF(res);
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if (isatty == -1 && PyErr_Occurred())
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goto error;
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}
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if (buffering == 1 || (buffering < 0 && isatty)) {
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buffering = -1;
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line_buffering = 1;
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}
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else
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line_buffering = 0;
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if (buffering < 0) {
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PyObject *blksize_obj;
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blksize_obj = _PyObject_GetAttrId(raw, &PyId__blksize);
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if (blksize_obj == NULL)
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goto error;
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buffering = PyLong_AsLong(blksize_obj);
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Py_DECREF(blksize_obj);
|
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if (buffering == -1 && PyErr_Occurred())
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goto error;
|
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}
|
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if (buffering < 0) {
|
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PyErr_SetString(PyExc_ValueError,
|
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"invalid buffering size");
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goto error;
|
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}
|
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|
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/* if not buffering, returns the raw file object */
|
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if (buffering == 0) {
|
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if (!binary) {
|
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PyErr_SetString(PyExc_ValueError,
|
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"can't have unbuffered text I/O");
|
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goto error;
|
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}
|
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|
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Py_DECREF(modeobj);
|
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return result;
|
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}
|
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|
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/* wraps into a buffered file */
|
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{
|
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PyObject *Buffered_class;
|
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|
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if (updating)
|
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Buffered_class = (PyObject *)&PyBufferedRandom_Type;
|
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else if (creating || writing || appending)
|
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Buffered_class = (PyObject *)&PyBufferedWriter_Type;
|
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else if (reading)
|
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Buffered_class = (PyObject *)&PyBufferedReader_Type;
|
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else {
|
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PyErr_Format(PyExc_ValueError,
|
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"unknown mode: '%s'", mode);
|
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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 */
|
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if (binary) {
|
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Py_DECREF(modeobj);
|
||
return result;
|
||
}
|
||
|
||
/* wraps into a TextIOWrapper */
|
||
wrapper = PyObject_CallFunction((PyObject *)&PyTextIOWrapper_Type,
|
||
"Osssi",
|
||
buffer,
|
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encoding, errors, newline,
|
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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;
|
||
}
|
||
|
||
/*
|
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* Private helpers for the io module.
|
||
*/
|
||
|
||
Py_off_t
|
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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()))
|
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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;
|
||
}
|