/go d Z ddlZddlZddlZddlZddlZddlZddlmZ ej
dv rddl m Z
ndZ
ddlZddlmZmZmZmZ h dZ eed r4e ej e ej d ZeZ eed
p ej j Z e Z d3d Z e d4d Z d Z! ej" Z"n
# e#$ r e!Z"Y nw xY wd Z$ ej% Z%n# e#$ r G d de&e' Z%Y nw xY w G d dej( Z)ej) * e) G d de) Z+ej+ * e+ ddl,m-Z- e+* e- G d d e) Z.ej. * e. G d d e. Z/ G d d e. Z0 G d! d"e/ Z1 G d# d$e/ Z2 G d% d&e. Z3 G d' d(e2e1 Z4 G d) d*e+ Z- G d+ d,e) Z5ej5 * e5 G d- d.ej6 Z7 G d/ d0e5 Z8 G d1 d2e8 Z9dS )5z)
Python implementation of the io module.
N)
allocate_lock> win32cygwin)setmode)__all__SEEK_SETSEEK_CURSEEK_END> r SEEK_HOLEi gettotalrefcountr c | Jt j j rd} nd} t j j r#ddl}| dt |dz | S )a
A helper function to choose the text encoding.
When encoding is not None, this function returns it.
Otherwise, this function returns the default text encoding
(i.e. "locale" or "utf-8" depends on UTF-8 mode).
This function emits an EncodingWarning if *encoding* is None and
sys.flags.warn_default_encoding is true.
This can be used in APIs with an encoding=None parameter
that pass it to TextIOWrapper or open.
However, please consider using encoding="utf-8" for new APIs.
Nutf-8localer z"'encoding' argument not specified.r )sysflags utf8_modewarn_default_encodingwarningswarnEncodingWarning)encoding
stacklevelr s ,/opt/alt/python311/lib64/python3.11/_pyio.py
text_encodingr + s` 9 HH H 9 * ; OOO MM>):>
;
;
; O rTc * t | t st j | } t | t t
t f st
d| z t |t st
d|z t |t st
d|z |'t |t st
d|z |'t |t st
d|z t | }|t d z
s t | t | k rt d|z d|v } d |v }
d
|v } d |v } d |v }
d
|v }d|v }|r|rt d | |
z | z | z dk rt d | s|
s| s| st d |r|t d |r|t d |r|t d |r&|dk r ddl
}| dt d t | | rdpd|
rd pdz | rd
pdz | rd pdz |
rd pdz || }|} d}|dk s|dk r| rd }d }|dk rSt } t j | j }|dk r|}n# t& t( f$ r Y nw xY w|dk rt d |dk r|r|S t d |
rt+ || }n<| s| s| rt- || }n%|
rt/ || }nt d |z |}|r|S t1 | }t3 ||||| }|}||_ |S # | xY w)!a Open file and return a stream. Raise OSError 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 exclusive creation of 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. (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)
========= ===============================================================
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.
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 str 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 for a list of the permitted
encoding error strings.
newline is a string controlling 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 '', no translation takes place. If newline is any of the
other legal values, any '\n' characters written are translated to
the given string.
closedfd is a bool. 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.
The newly created file is non-inheritable.
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.
zinvalid file: %rzinvalid mode: %rzinvalid buffering: %rNinvalid encoding: %rinvalid errors: %rzaxrwb+txr wa+tbz'can't have text and binary mode at oncer z)can't have read/write/append mode at oncez/must have exactly one of read/write/append modez-binary mode doesn't take an encoding argumentz+binary mode doesn't take an errors argumentz+binary mode doesn't take a newline argumentr zaline buffering (buffering=1) isn't supported in binary mode, the default buffer size will be usedr )openerFr Tzinvalid buffering sizez can't have unbuffered text I/Ozunknown mode: %r)
isinstanceintosfspathstrbytes TypeErrorsetlen
ValueErrorr r RuntimeWarningFileIOisattyDEFAULT_BUFFER_SIZEfstatfileno
st_blksizeOSErrorAttributeErrorBufferedRandomBufferedWriterBufferedReaderr
TextIOWrappermodeclose)filerB bufferingr errorsnewlineclosefdr* modescreatingreadingwriting appendingupdatingtextbinaryr rawresultline_bufferingbsbuffers r openrV L s n dC y dS% - . . 3*T1222 dC 3*T1222 i % % =/);<<<Jx$=$=.9:::
*VS"9"9,v5666 IIE s9~~ 4TSZZ!7!7+d2333e|HUlGUlGu Ie|H %