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authormonster <monster@ydb.tech>2022-07-07 14:41:37 +0300
committermonster <monster@ydb.tech>2022-07-07 14:41:37 +0300
commit06e5c21a835c0e923506c4ff27929f34e00761c2 (patch)
tree75efcbc6854ef9bd476eb8bf00cc5c900da436a2 /contrib/python/ipython/py3/IPython/utils/_process_posix.py
parent03f024c4412e3aa613bb543cf1660176320ba8f4 (diff)
downloadydb-06e5c21a835c0e923506c4ff27929f34e00761c2.tar.gz
fix ya.make
Diffstat (limited to 'contrib/python/ipython/py3/IPython/utils/_process_posix.py')
-rw-r--r--contrib/python/ipython/py3/IPython/utils/_process_posix.py216
1 files changed, 0 insertions, 216 deletions
diff --git a/contrib/python/ipython/py3/IPython/utils/_process_posix.py b/contrib/python/ipython/py3/IPython/utils/_process_posix.py
deleted file mode 100644
index 59b5c23896..0000000000
--- a/contrib/python/ipython/py3/IPython/utils/_process_posix.py
+++ /dev/null
@@ -1,216 +0,0 @@
-"""Posix-specific implementation of process utilities.
-
-This file is only meant to be imported by process.py, not by end-users.
-"""
-
-#-----------------------------------------------------------------------------
-# Copyright (C) 2010-2011 The IPython Development Team
-#
-# Distributed under the terms of the BSD License. The full license is in
-# the file COPYING, distributed as part of this software.
-#-----------------------------------------------------------------------------
-
-#-----------------------------------------------------------------------------
-# Imports
-#-----------------------------------------------------------------------------
-
-# Stdlib
-import errno
-import os
-import subprocess as sp
-import sys
-
-import pexpect
-
-# Our own
-from ._process_common import getoutput, arg_split
-from IPython.utils.encoding import DEFAULT_ENCODING
-
-#-----------------------------------------------------------------------------
-# Function definitions
-#-----------------------------------------------------------------------------
-
-class ProcessHandler(object):
- """Execute subprocesses under the control of pexpect.
- """
- # Timeout in seconds to wait on each reading of the subprocess' output.
- # This should not be set too low to avoid cpu overusage from our side,
- # since we read in a loop whose period is controlled by this timeout.
- read_timeout = 0.05
-
- # Timeout to give a process if we receive SIGINT, between sending the
- # SIGINT to the process and forcefully terminating it.
- terminate_timeout = 0.2
-
- # File object where stdout and stderr of the subprocess will be written
- logfile = None
-
- # Shell to call for subprocesses to execute
- _sh = None
-
- @property
- def sh(self):
- if self._sh is None:
- shell_name = os.environ.get("SHELL", "sh")
- self._sh = pexpect.which(shell_name)
- if self._sh is None:
- raise OSError('"{}" shell not found'.format(shell_name))
-
- return self._sh
-
- def __init__(self, logfile=None, read_timeout=None, terminate_timeout=None):
- """Arguments are used for pexpect calls."""
- self.read_timeout = (ProcessHandler.read_timeout if read_timeout is
- None else read_timeout)
- self.terminate_timeout = (ProcessHandler.terminate_timeout if
- terminate_timeout is None else
- terminate_timeout)
- self.logfile = sys.stdout if logfile is None else logfile
-
- def getoutput(self, cmd):
- """Run a command and return its stdout/stderr as a string.
-
- Parameters
- ----------
- cmd : str
- A command to be executed in the system shell.
-
- Returns
- -------
- output : str
- A string containing the combination of stdout and stderr from the
- subprocess, in whatever order the subprocess originally wrote to its
- file descriptors (so the order of the information in this string is the
- correct order as would be seen if running the command in a terminal).
- """
- try:
- return pexpect.run(self.sh, args=['-c', cmd]).replace('\r\n', '\n')
- except KeyboardInterrupt:
- print('^C', file=sys.stderr, end='')
-
- def getoutput_pexpect(self, cmd):
- """Run a command and return its stdout/stderr as a string.
-
- Parameters
- ----------
- cmd : str
- A command to be executed in the system shell.
-
- Returns
- -------
- output : str
- A string containing the combination of stdout and stderr from the
- subprocess, in whatever order the subprocess originally wrote to its
- file descriptors (so the order of the information in this string is the
- correct order as would be seen if running the command in a terminal).
- """
- try:
- return pexpect.run(self.sh, args=['-c', cmd]).replace('\r\n', '\n')
- except KeyboardInterrupt:
- print('^C', file=sys.stderr, end='')
-
- def system(self, cmd):
- """Execute a command in a subshell.
-
- Parameters
- ----------
- cmd : str
- A command to be executed in the system shell.
-
- Returns
- -------
- int : child's exitstatus
- """
- # Get likely encoding for the output.
- enc = DEFAULT_ENCODING
-
- # Patterns to match on the output, for pexpect. We read input and
- # allow either a short timeout or EOF
- patterns = [pexpect.TIMEOUT, pexpect.EOF]
- # the index of the EOF pattern in the list.
- # even though we know it's 1, this call means we don't have to worry if
- # we change the above list, and forget to change this value:
- EOF_index = patterns.index(pexpect.EOF)
- # The size of the output stored so far in the process output buffer.
- # Since pexpect only appends to this buffer, each time we print we
- # record how far we've printed, so that next time we only print *new*
- # content from the buffer.
- out_size = 0
- try:
- # Since we're not really searching the buffer for text patterns, we
- # can set pexpect's search window to be tiny and it won't matter.
- # We only search for the 'patterns' timeout or EOF, which aren't in
- # the text itself.
- #child = pexpect.spawn(pcmd, searchwindowsize=1)
- if hasattr(pexpect, 'spawnb'):
- child = pexpect.spawnb(self.sh, args=['-c', cmd]) # Pexpect-U
- else:
- child = pexpect.spawn(self.sh, args=['-c', cmd]) # Vanilla Pexpect
- flush = sys.stdout.flush
- while True:
- # res is the index of the pattern that caused the match, so we
- # know whether we've finished (if we matched EOF) or not
- res_idx = child.expect_list(patterns, self.read_timeout)
- print(child.before[out_size:].decode(enc, 'replace'), end='')
- flush()
- if res_idx==EOF_index:
- break
- # Update the pointer to what we've already printed
- out_size = len(child.before)
- except KeyboardInterrupt:
- # We need to send ^C to the process. The ascii code for '^C' is 3
- # (the character is known as ETX for 'End of Text', see
- # curses.ascii.ETX).
- child.sendline(chr(3))
- # Read and print any more output the program might produce on its
- # way out.
- try:
- out_size = len(child.before)
- child.expect_list(patterns, self.terminate_timeout)
- print(child.before[out_size:].decode(enc, 'replace'), end='')
- sys.stdout.flush()
- except KeyboardInterrupt:
- # Impatient users tend to type it multiple times
- pass
- finally:
- # Ensure the subprocess really is terminated
- child.terminate(force=True)
- # add isalive check, to ensure exitstatus is set:
- child.isalive()
-
- # We follow the subprocess pattern, returning either the exit status
- # as a positive number, or the terminating signal as a negative
- # number.
- # on Linux, sh returns 128+n for signals terminating child processes on Linux
- # on BSD (OS X), the signal code is set instead
- if child.exitstatus is None:
- # on WIFSIGNALED, pexpect sets signalstatus, leaving exitstatus=None
- if child.signalstatus is None:
- # this condition may never occur,
- # but let's be certain we always return an integer.
- return 0
- return -child.signalstatus
- if child.exitstatus > 128:
- return -(child.exitstatus - 128)
- return child.exitstatus
-
-
-# Make system() with a functional interface for outside use. Note that we use
-# getoutput() from the _common utils, which is built on top of popen(). Using
-# pexpect to get subprocess output produces difficult to parse output, since
-# programs think they are talking to a tty and produce highly formatted output
-# (ls is a good example) that makes them hard.
-system = ProcessHandler().system
-
-def check_pid(pid):
- try:
- os.kill(pid, 0)
- except OSError as err:
- if err.errno == errno.ESRCH:
- return False
- elif err.errno == errno.EPERM:
- # Don't have permission to signal the process - probably means it exists
- return True
- raise
- else:
- return True