forked from s_ranjbar/city_retrofit
526 lines
21 KiB
Python
526 lines
21 KiB
Python
|
from io import StringIO, BytesIO
|
||
|
|
import codecs
|
||
|
|
import os
|
||
|
|
import sys
|
||
|
|
import re
|
||
|
|
import errno
|
||
|
|
from .exceptions import ExceptionPexpect, EOF, TIMEOUT
|
||
|
|
from .expect import Expecter, searcher_string, searcher_re
|
||
|
|
|
||
|
|
PY3 = (sys.version_info[0] >= 3)
|
||
|
|
text_type = str if PY3 else unicode
|
||
|
|
|
||
|
|
class _NullCoder(object):
|
||
|
|
"""Pass bytes through unchanged."""
|
||
|
|
@staticmethod
|
||
|
|
def encode(b, final=False):
|
||
|
|
return b
|
||
|
|
|
||
|
|
@staticmethod
|
||
|
|
def decode(b, final=False):
|
||
|
|
return b
|
||
|
|
|
||
|
|
class SpawnBase(object):
|
||
|
|
"""A base class providing the backwards-compatible spawn API for Pexpect.
|
||
|
|
|
||
|
|
This should not be instantiated directly: use :class:`pexpect.spawn` or
|
||
|
|
:class:`pexpect.fdpexpect.fdspawn`.
|
||
|
|
"""
|
||
|
|
encoding = None
|
||
|
|
pid = None
|
||
|
|
flag_eof = False
|
||
|
|
|
||
|
|
def __init__(self, timeout=30, maxread=2000, searchwindowsize=None,
|
||
|
|
logfile=None, encoding=None, codec_errors='strict'):
|
||
|
|
self.stdin = sys.stdin
|
||
|
|
self.stdout = sys.stdout
|
||
|
|
self.stderr = sys.stderr
|
||
|
|
|
||
|
|
self.searcher = None
|
||
|
|
self.ignorecase = False
|
||
|
|
self.before = None
|
||
|
|
self.after = None
|
||
|
|
self.match = None
|
||
|
|
self.match_index = None
|
||
|
|
self.terminated = True
|
||
|
|
self.exitstatus = None
|
||
|
|
self.signalstatus = None
|
||
|
|
# status returned by os.waitpid
|
||
|
|
self.status = None
|
||
|
|
# the child file descriptor is initially closed
|
||
|
|
self.child_fd = -1
|
||
|
|
self.timeout = timeout
|
||
|
|
self.delimiter = EOF
|
||
|
|
self.logfile = logfile
|
||
|
|
# input from child (read_nonblocking)
|
||
|
|
self.logfile_read = None
|
||
|
|
# output to send (send, sendline)
|
||
|
|
self.logfile_send = None
|
||
|
|
# max bytes to read at one time into buffer
|
||
|
|
self.maxread = maxread
|
||
|
|
# Data before searchwindowsize point is preserved, but not searched.
|
||
|
|
self.searchwindowsize = searchwindowsize
|
||
|
|
# Delay used before sending data to child. Time in seconds.
|
||
|
|
# Set this to None to skip the time.sleep() call completely.
|
||
|
|
self.delaybeforesend = 0.05
|
||
|
|
# Used by close() to give kernel time to update process status.
|
||
|
|
# Time in seconds.
|
||
|
|
self.delayafterclose = 0.1
|
||
|
|
# Used by terminate() to give kernel time to update process status.
|
||
|
|
# Time in seconds.
|
||
|
|
self.delayafterterminate = 0.1
|
||
|
|
# Delay in seconds to sleep after each call to read_nonblocking().
|
||
|
|
# Set this to None to skip the time.sleep() call completely: that
|
||
|
|
# would restore the behavior from pexpect-2.0 (for performance
|
||
|
|
# reasons or because you don't want to release Python's global
|
||
|
|
# interpreter lock).
|
||
|
|
self.delayafterread = 0.0001
|
||
|
|
self.softspace = False
|
||
|
|
self.name = '<' + repr(self) + '>'
|
||
|
|
self.closed = True
|
||
|
|
|
||
|
|
# Unicode interface
|
||
|
|
self.encoding = encoding
|
||
|
|
self.codec_errors = codec_errors
|
||
|
|
if encoding is None:
|
||
|
|
# bytes mode (accepts some unicode for backwards compatibility)
|
||
|
|
self._encoder = self._decoder = _NullCoder()
|
||
|
|
self.string_type = bytes
|
||
|
|
self.buffer_type = BytesIO
|
||
|
|
self.crlf = b'\r\n'
|
||
|
|
if PY3:
|
||
|
|
self.allowed_string_types = (bytes, str)
|
||
|
|
self.linesep = os.linesep.encode('ascii')
|
||
|
|
def write_to_stdout(b):
|
||
|
|
try:
|
||
|
|
return sys.stdout.buffer.write(b)
|
||
|
|
except AttributeError:
|
||
|
|
# If stdout has been replaced, it may not have .buffer
|
||
|
|
return sys.stdout.write(b.decode('ascii', 'replace'))
|
||
|
|
self.write_to_stdout = write_to_stdout
|
||
|
|
else:
|
||
|
|
self.allowed_string_types = (basestring,) # analysis:ignore
|
||
|
|
self.linesep = os.linesep
|
||
|
|
self.write_to_stdout = sys.stdout.write
|
||
|
|
else:
|
||
|
|
# unicode mode
|
||
|
|
self._encoder = codecs.getincrementalencoder(encoding)(codec_errors)
|
||
|
|
self._decoder = codecs.getincrementaldecoder(encoding)(codec_errors)
|
||
|
|
self.string_type = text_type
|
||
|
|
self.buffer_type = StringIO
|
||
|
|
self.crlf = u'\r\n'
|
||
|
|
self.allowed_string_types = (text_type, )
|
||
|
|
if PY3:
|
||
|
|
self.linesep = os.linesep
|
||
|
|
else:
|
||
|
|
self.linesep = os.linesep.decode('ascii')
|
||
|
|
# This can handle unicode in both Python 2 and 3
|
||
|
|
self.write_to_stdout = sys.stdout.write
|
||
|
|
# storage for async transport
|
||
|
|
self.async_pw_transport = None
|
||
|
|
# This is the read buffer. See maxread.
|
||
|
|
self._buffer = self.buffer_type()
|
||
|
|
# The buffer may be trimmed for efficiency reasons. This is the
|
||
|
|
# untrimmed buffer, used to create the before attribute.
|
||
|
|
self._before = self.buffer_type()
|
||
|
|
|
||
|
|
def _log(self, s, direction):
|
||
|
|
if self.logfile is not None:
|
||
|
|
self.logfile.write(s)
|
||
|
|
self.logfile.flush()
|
||
|
|
second_log = self.logfile_send if (direction=='send') else self.logfile_read
|
||
|
|
if second_log is not None:
|
||
|
|
second_log.write(s)
|
||
|
|
second_log.flush()
|
||
|
|
|
||
|
|
# For backwards compatibility, in bytes mode (when encoding is None)
|
||
|
|
# unicode is accepted for send and expect. Unicode mode is strictly unicode
|
||
|
|
# only.
|
||
|
|
def _coerce_expect_string(self, s):
|
||
|
|
if self.encoding is None and not isinstance(s, bytes):
|
||
|
|
return s.encode('ascii')
|
||
|
|
return s
|
||
|
|
|
||
|
|
def _coerce_send_string(self, s):
|
||
|
|
if self.encoding is None and not isinstance(s, bytes):
|
||
|
|
return s.encode('utf-8')
|
||
|
|
return s
|
||
|
|
|
||
|
|
def _get_buffer(self):
|
||
|
|
return self._buffer.getvalue()
|
||
|
|
|
||
|
|
def _set_buffer(self, value):
|
||
|
|
self._buffer = self.buffer_type()
|
||
|
|
self._buffer.write(value)
|
||
|
|
|
||
|
|
# This property is provided for backwards compatability (self.buffer used
|
||
|
|
# to be a string/bytes object)
|
||
|
|
buffer = property(_get_buffer, _set_buffer)
|
||
|
|
|
||
|
|
def read_nonblocking(self, size=1, timeout=None):
|
||
|
|
"""This reads data from the file descriptor.
|
||
|
|
|
||
|
|
This is a simple implementation suitable for a regular file. Subclasses using ptys or pipes should override it.
|
||
|
|
|
||
|
|
The timeout parameter is ignored.
|
||
|
|
"""
|
||
|
|
|
||
|
|
try:
|
||
|
|
s = os.read(self.child_fd, size)
|
||
|
|
except OSError as err:
|
||
|
|
if err.args[0] == errno.EIO:
|
||
|
|
# Linux-style EOF
|
||
|
|
self.flag_eof = True
|
||
|
|
raise EOF('End Of File (EOF). Exception style platform.')
|
||
|
|
raise
|
||
|
|
if s == b'':
|
||
|
|
# BSD-style EOF
|
||
|
|
self.flag_eof = True
|
||
|
|
raise EOF('End Of File (EOF). Empty string style platform.')
|
||
|
|
|
||
|
|
s = self._decoder.decode(s, final=False)
|
||
|
|
self._log(s, 'read')
|
||
|
|
return s
|
||
|
|
|
||
|
|
def _pattern_type_err(self, pattern):
|
||
|
|
raise TypeError('got {badtype} ({badobj!r}) as pattern, must be one'
|
||
|
|
' of: {goodtypes}, pexpect.EOF, pexpect.TIMEOUT'\
|
||
|
|
.format(badtype=type(pattern),
|
||
|
|
badobj=pattern,
|
||
|
|
goodtypes=', '.join([str(ast)\
|
||
|
|
for ast in self.allowed_string_types])
|
||
|
|
)
|
||
|
|
)
|
||
|
|
|
||
|
|
def compile_pattern_list(self, patterns):
|
||
|
|
'''This compiles a pattern-string or a list of pattern-strings.
|
||
|
|
Patterns must be a StringType, EOF, TIMEOUT, SRE_Pattern, or a list of
|
||
|
|
those. Patterns may also be None which results in an empty list (you
|
||
|
|
might do this if waiting for an EOF or TIMEOUT condition without
|
||
|
|
expecting any pattern).
|
||
|
|
|
||
|
|
This is used by expect() when calling expect_list(). Thus expect() is
|
||
|
|
nothing more than::
|
||
|
|
|
||
|
|
cpl = self.compile_pattern_list(pl)
|
||
|
|
return self.expect_list(cpl, timeout)
|
||
|
|
|
||
|
|
If you are using expect() within a loop it may be more
|
||
|
|
efficient to compile the patterns first and then call expect_list().
|
||
|
|
This avoid calls in a loop to compile_pattern_list()::
|
||
|
|
|
||
|
|
cpl = self.compile_pattern_list(my_pattern)
|
||
|
|
while some_condition:
|
||
|
|
...
|
||
|
|
i = self.expect_list(cpl, timeout)
|
||
|
|
...
|
||
|
|
'''
|
||
|
|
|
||
|
|
if patterns is None:
|
||
|
|
return []
|
||
|
|
if not isinstance(patterns, list):
|
||
|
|
patterns = [patterns]
|
||
|
|
|
||
|
|
# Allow dot to match \n
|
||
|
|
compile_flags = re.DOTALL
|
||
|
|
if self.ignorecase:
|
||
|
|
compile_flags = compile_flags | re.IGNORECASE
|
||
|
|
compiled_pattern_list = []
|
||
|
|
for idx, p in enumerate(patterns):
|
||
|
|
if isinstance(p, self.allowed_string_types):
|
||
|
|
p = self._coerce_expect_string(p)
|
||
|
|
compiled_pattern_list.append(re.compile(p, compile_flags))
|
||
|
|
elif p is EOF:
|
||
|
|
compiled_pattern_list.append(EOF)
|
||
|
|
elif p is TIMEOUT:
|
||
|
|
compiled_pattern_list.append(TIMEOUT)
|
||
|
|
elif isinstance(p, type(re.compile(''))):
|
||
|
|
compiled_pattern_list.append(p)
|
||
|
|
else:
|
||
|
|
self._pattern_type_err(p)
|
||
|
|
return compiled_pattern_list
|
||
|
|
|
||
|
|
def expect(self, pattern, timeout=-1, searchwindowsize=-1, async_=False, **kw):
|
||
|
|
'''This seeks through the stream until a pattern is matched. The
|
||
|
|
pattern is overloaded and may take several types. The pattern can be a
|
||
|
|
StringType, EOF, a compiled re, or a list of any of those types.
|
||
|
|
Strings will be compiled to re types. This returns the index into the
|
||
|
|
pattern list. If the pattern was not a list this returns index 0 on a
|
||
|
|
successful match. This may raise exceptions for EOF or TIMEOUT. To
|
||
|
|
avoid the EOF or TIMEOUT exceptions add EOF or TIMEOUT to the pattern
|
||
|
|
list. That will cause expect to match an EOF or TIMEOUT condition
|
||
|
|
instead of raising an exception.
|
||
|
|
|
||
|
|
If you pass a list of patterns and more than one matches, the first
|
||
|
|
match in the stream is chosen. If more than one pattern matches at that
|
||
|
|
point, the leftmost in the pattern list is chosen. For example::
|
||
|
|
|
||
|
|
# the input is 'foobar'
|
||
|
|
index = p.expect(['bar', 'foo', 'foobar'])
|
||
|
|
# returns 1('foo') even though 'foobar' is a "better" match
|
||
|
|
|
||
|
|
Please note, however, that buffering can affect this behavior, since
|
||
|
|
input arrives in unpredictable chunks. For example::
|
||
|
|
|
||
|
|
# the input is 'foobar'
|
||
|
|
index = p.expect(['foobar', 'foo'])
|
||
|
|
# returns 0('foobar') if all input is available at once,
|
||
|
|
# but returns 1('foo') if parts of the final 'bar' arrive late
|
||
|
|
|
||
|
|
When a match is found for the given pattern, the class instance
|
||
|
|
attribute *match* becomes an re.MatchObject result. Should an EOF
|
||
|
|
or TIMEOUT pattern match, then the match attribute will be an instance
|
||
|
|
of that exception class. The pairing before and after class
|
||
|
|
instance attributes are views of the data preceding and following
|
||
|
|
the matching pattern. On general exception, class attribute
|
||
|
|
*before* is all data received up to the exception, while *match* and
|
||
|
|
*after* attributes are value None.
|
||
|
|
|
||
|
|
When the keyword argument timeout is -1 (default), then TIMEOUT will
|
||
|
|
raise after the default value specified by the class timeout
|
||
|
|
attribute. When None, TIMEOUT will not be raised and may block
|
||
|
|
indefinitely until match.
|
||
|
|
|
||
|
|
When the keyword argument searchwindowsize is -1 (default), then the
|
||
|
|
value specified by the class maxread attribute is used.
|
||
|
|
|
||
|
|
A list entry may be EOF or TIMEOUT instead of a string. This will
|
||
|
|
catch these exceptions and return the index of the list entry instead
|
||
|
|
of raising the exception. The attribute 'after' will be set to the
|
||
|
|
exception type. The attribute 'match' will be None. This allows you to
|
||
|
|
write code like this::
|
||
|
|
|
||
|
|
index = p.expect(['good', 'bad', pexpect.EOF, pexpect.TIMEOUT])
|
||
|
|
if index == 0:
|
||
|
|
do_something()
|
||
|
|
elif index == 1:
|
||
|
|
do_something_else()
|
||
|
|
elif index == 2:
|
||
|
|
do_some_other_thing()
|
||
|
|
elif index == 3:
|
||
|
|
do_something_completely_different()
|
||
|
|
|
||
|
|
instead of code like this::
|
||
|
|
|
||
|
|
try:
|
||
|
|
index = p.expect(['good', 'bad'])
|
||
|
|
if index == 0:
|
||
|
|
do_something()
|
||
|
|
elif index == 1:
|
||
|
|
do_something_else()
|
||
|
|
except EOF:
|
||
|
|
do_some_other_thing()
|
||
|
|
except TIMEOUT:
|
||
|
|
do_something_completely_different()
|
||
|
|
|
||
|
|
These two forms are equivalent. It all depends on what you want. You
|
||
|
|
can also just expect the EOF if you are waiting for all output of a
|
||
|
|
child to finish. For example::
|
||
|
|
|
||
|
|
p = pexpect.spawn('/bin/ls')
|
||
|
|
p.expect(pexpect.EOF)
|
||
|
|
print p.before
|
||
|
|
|
||
|
|
If you are trying to optimize for speed then see expect_list().
|
||
|
|
|
||
|
|
On Python 3.4, or Python 3.3 with asyncio installed, passing
|
||
|
|
``async_=True`` will make this return an :mod:`asyncio` coroutine,
|
||
|
|
which you can yield from to get the same result that this method would
|
||
|
|
normally give directly. So, inside a coroutine, you can replace this code::
|
||
|
|
|
||
|
|
index = p.expect(patterns)
|
||
|
|
|
||
|
|
With this non-blocking form::
|
||
|
|
|
||
|
|
index = yield from p.expect(patterns, async_=True)
|
||
|
|
'''
|
||
|
|
if 'async' in kw:
|
||
|
|
async_ = kw.pop('async')
|
||
|
|
if kw:
|
||
|
|
raise TypeError("Unknown keyword arguments: {}".format(kw))
|
||
|
|
|
||
|
|
compiled_pattern_list = self.compile_pattern_list(pattern)
|
||
|
|
return self.expect_list(compiled_pattern_list,
|
||
|
|
timeout, searchwindowsize, async_)
|
||
|
|
|
||
|
|
def expect_list(self, pattern_list, timeout=-1, searchwindowsize=-1,
|
||
|
|
async_=False, **kw):
|
||
|
|
'''This takes a list of compiled regular expressions and returns the
|
||
|
|
index into the pattern_list that matched the child output. The list may
|
||
|
|
also contain EOF or TIMEOUT(which are not compiled regular
|
||
|
|
expressions). This method is similar to the expect() method except that
|
||
|
|
expect_list() does not recompile the pattern list on every call. This
|
||
|
|
may help if you are trying to optimize for speed, otherwise just use
|
||
|
|
the expect() method. This is called by expect().
|
||
|
|
|
||
|
|
|
||
|
|
Like :meth:`expect`, passing ``async_=True`` will make this return an
|
||
|
|
asyncio coroutine.
|
||
|
|
'''
|
||
|
|
if timeout == -1:
|
||
|
|
timeout = self.timeout
|
||
|
|
if 'async' in kw:
|
||
|
|
async_ = kw.pop('async')
|
||
|
|
if kw:
|
||
|
|
raise TypeError("Unknown keyword arguments: {}".format(kw))
|
||
|
|
|
||
|
|
exp = Expecter(self, searcher_re(pattern_list), searchwindowsize)
|
||
|
|
if async_:
|
||
|
|
from ._async import expect_async
|
||
|
|
return expect_async(exp, timeout)
|
||
|
|
else:
|
||
|
|
return exp.expect_loop(timeout)
|
||
|
|
|
||
|
|
def expect_exact(self, pattern_list, timeout=-1, searchwindowsize=-1,
|
||
|
|
async_=False, **kw):
|
||
|
|
|
||
|
|
'''This is similar to expect(), but uses plain string matching instead
|
||
|
|
of compiled regular expressions in 'pattern_list'. The 'pattern_list'
|
||
|
|
may be a string; a list or other sequence of strings; or TIMEOUT and
|
||
|
|
EOF.
|
||
|
|
|
||
|
|
This call might be faster than expect() for two reasons: string
|
||
|
|
searching is faster than RE matching and it is possible to limit the
|
||
|
|
search to just the end of the input buffer.
|
||
|
|
|
||
|
|
This method is also useful when you don't want to have to worry about
|
||
|
|
escaping regular expression characters that you want to match.
|
||
|
|
|
||
|
|
Like :meth:`expect`, passing ``async_=True`` will make this return an
|
||
|
|
asyncio coroutine.
|
||
|
|
'''
|
||
|
|
if timeout == -1:
|
||
|
|
timeout = self.timeout
|
||
|
|
if 'async' in kw:
|
||
|
|
async_ = kw.pop('async')
|
||
|
|
if kw:
|
||
|
|
raise TypeError("Unknown keyword arguments: {}".format(kw))
|
||
|
|
|
||
|
|
if (isinstance(pattern_list, self.allowed_string_types) or
|
||
|
|
pattern_list in (TIMEOUT, EOF)):
|
||
|
|
pattern_list = [pattern_list]
|
||
|
|
|
||
|
|
def prepare_pattern(pattern):
|
||
|
|
if pattern in (TIMEOUT, EOF):
|
||
|
|
return pattern
|
||
|
|
if isinstance(pattern, self.allowed_string_types):
|
||
|
|
return self._coerce_expect_string(pattern)
|
||
|
|
self._pattern_type_err(pattern)
|
||
|
|
|
||
|
|
try:
|
||
|
|
pattern_list = iter(pattern_list)
|
||
|
|
except TypeError:
|
||
|
|
self._pattern_type_err(pattern_list)
|
||
|
|
pattern_list = [prepare_pattern(p) for p in pattern_list]
|
||
|
|
|
||
|
|
exp = Expecter(self, searcher_string(pattern_list), searchwindowsize)
|
||
|
|
if async_:
|
||
|
|
from ._async import expect_async
|
||
|
|
return expect_async(exp, timeout)
|
||
|
|
else:
|
||
|
|
return exp.expect_loop(timeout)
|
||
|
|
|
||
|
|
def expect_loop(self, searcher, timeout=-1, searchwindowsize=-1):
|
||
|
|
'''This is the common loop used inside expect. The 'searcher' should be
|
||
|
|
an instance of searcher_re or searcher_string, which describes how and
|
||
|
|
what to search for in the input.
|
||
|
|
|
||
|
|
See expect() for other arguments, return value and exceptions. '''
|
||
|
|
|
||
|
|
exp = Expecter(self, searcher, searchwindowsize)
|
||
|
|
return exp.expect_loop(timeout)
|
||
|
|
|
||
|
|
def read(self, size=-1):
|
||
|
|
'''This reads at most "size" bytes from the file (less if the read hits
|
||
|
|
EOF before obtaining size bytes). If the size argument is negative or
|
||
|
|
omitted, read all data until EOF is reached. The bytes are returned as
|
||
|
|
a string object. An empty string is returned when EOF is encountered
|
||
|
|
immediately. '''
|
||
|
|
|
||
|
|
if size == 0:
|
||
|
|
return self.string_type()
|
||
|
|
if size < 0:
|
||
|
|
# delimiter default is EOF
|
||
|
|
self.expect(self.delimiter)
|
||
|
|
return self.before
|
||
|
|
|
||
|
|
# I could have done this more directly by not using expect(), but
|
||
|
|
# I deliberately decided to couple read() to expect() so that
|
||
|
|
# I would catch any bugs early and ensure consistent behavior.
|
||
|
|
# It's a little less efficient, but there is less for me to
|
||
|
|
# worry about if I have to later modify read() or expect().
|
||
|
|
# Note, it's OK if size==-1 in the regex. That just means it
|
||
|
|
# will never match anything in which case we stop only on EOF.
|
||
|
|
cre = re.compile(self._coerce_expect_string('.{%d}' % size), re.DOTALL)
|
||
|
|
# delimiter default is EOF
|
||
|
|
index = self.expect([cre, self.delimiter])
|
||
|
|
if index == 0:
|
||
|
|
### FIXME self.before should be ''. Should I assert this?
|
||
|
|
return self.after
|
||
|
|
return self.before
|
||
|
|
|
||
|
|
def readline(self, size=-1):
|
||
|
|
'''This reads and returns one entire line. The newline at the end of
|
||
|
|
line is returned as part of the string, unless the file ends without a
|
||
|
|
newline. An empty string is returned if EOF is encountered immediately.
|
||
|
|
This looks for a newline as a CR/LF pair (\\r\\n) even on UNIX because
|
||
|
|
this is what the pseudotty device returns. So contrary to what you may
|
||
|
|
expect you will receive newlines as \\r\\n.
|
||
|
|
|
||
|
|
If the size argument is 0 then an empty string is returned. In all
|
||
|
|
other cases the size argument is ignored, which is not standard
|
||
|
|
behavior for a file-like object. '''
|
||
|
|
|
||
|
|
if size == 0:
|
||
|
|
return self.string_type()
|
||
|
|
# delimiter default is EOF
|
||
|
|
index = self.expect([self.crlf, self.delimiter])
|
||
|
|
if index == 0:
|
||
|
|
return self.before + self.crlf
|
||
|
|
else:
|
||
|
|
return self.before
|
||
|
|
|
||
|
|
def __iter__(self):
|
||
|
|
'''This is to support iterators over a file-like object.
|
||
|
|
'''
|
||
|
|
return iter(self.readline, self.string_type())
|
||
|
|
|
||
|
|
def readlines(self, sizehint=-1):
|
||
|
|
'''This reads until EOF using readline() and returns a list containing
|
||
|
|
the lines thus read. The optional 'sizehint' argument is ignored.
|
||
|
|
Remember, because this reads until EOF that means the child
|
||
|
|
process should have closed its stdout. If you run this method on
|
||
|
|
a child that is still running with its stdout open then this
|
||
|
|
method will block until it timesout.'''
|
||
|
|
|
||
|
|
lines = []
|
||
|
|
while True:
|
||
|
|
line = self.readline()
|
||
|
|
if not line:
|
||
|
|
break
|
||
|
|
lines.append(line)
|
||
|
|
return lines
|
||
|
|
|
||
|
|
def fileno(self):
|
||
|
|
'''Expose file descriptor for a file-like interface
|
||
|
|
'''
|
||
|
|
return self.child_fd
|
||
|
|
|
||
|
|
def flush(self):
|
||
|
|
'''This does nothing. It is here to support the interface for a
|
||
|
|
File-like object. '''
|
||
|
|
pass
|
||
|
|
|
||
|
|
def isatty(self):
|
||
|
|
"""Overridden in subclass using tty"""
|
||
|
|
return False
|
||
|
|
|
||
|
|
# For 'with spawn(...) as child:'
|
||
|
|
def __enter__(self):
|
||
|
|
return self
|
||
|
|
|
||
|
|
def __exit__(self, etype, evalue, tb):
|
||
|
|
# We rely on subclasses to implement close(). If they don't, it's not
|
||
|
|
# clear what a context manager should do.
|
||
|
|
self.close()
|