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d g Z e r=d d l m! Z! m" Z" m# Z# m$ Z$ m% Z% m& Z& m' Z' m( Z( e j) d d d d d d! d" d# g � Gd$ d% � d% e* � Z+ g Z, d& d' � Z- d; Z. d< Z/ d= Z0 d+ d, � Z1 d- d d. d � Z2 d/ d � Z3 d- d d0 d � Z4 Gd1 d � d e5 � Z6 d2 d d- d d3 d4 d5 d � Z7 d6 d7 � Z8 d8 d � Z9 d9 d � Z: e5 � Z; Gd: d � d e5 � Z< d S)>a� Subprocesses with accessible I/O streams
This module allows you to spawn processes, connect to their
input/output/error pipes, and obtain their return codes.
For a complete description of this module see the Python documentation.
Main API
========
run(...): Runs a command, waits for it to complete, then returns a
CompletedProcess instance.
Popen(...): A class for flexibly executing a command in a new process
Constants
---------
DEVNULL: Special value that indicates that os.devnull should be used
PIPE: Special value that indicates a pipe should be created
STDOUT: Special value that indicates that stderr should go to stdout
Older API
=========
call(...): Runs a command, waits for it to complete, then returns
the return code.
check_call(...): Same as call() but raises CalledProcessError()
if return code is not 0
check_output(...): Same as check_call() but returns the contents of
stdout instead of a return code
getoutput(...): Runs a command in the shell, waits for it to complete,
then returns the output
getstatusoutput(...): Runs a command in the shell, waits for it to complete,
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�CalledProcessErrorz�Raised when run() is called with check=True and the process
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c O sM t | | � } | rI | j d � } | d k r: | d } t | | � � d S)aO Run command with arguments. Wait for command to complete. If
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ra Nr )r# �getr
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c O sx d | k r t d � � d | k rV | d d k rV | j d d � rL d n d | d <t | d t d | d
d | � j S) a( Run command with arguments and return its output.
If the exit code was non-zero it raises a CalledProcessError. The
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attribute and output in the output attribute.
The arguments are the same as for the Popen constructor. Example:
>>> check_output(["ls", "-l", "/dev/null"])
b'crw-rw-rw- 1 root root 1, 3 Oct 18 2007 /dev/null\n'
The stdout argument is not allowed as it is used internally.
To capture standard error in the result, use stderr=STDOUT.
>>> check_output(["/bin/sh", "-c",
... "ls -l non_existent_file ; exit 0"],
... stderr=STDOUT)
b'ls: non_existent_file: No such file or directory\n'
There is an additional optional argument, "input", allowing you to
pass a string to the subprocess's stdin. If you use this argument
you may not also use the Popen constructor's "stdin" argument, as
it too will be used internally. Example:
>>> check_output(["sed", "-e", "s/foo/bar/"],
... input=b"when in the course of fooman events\n")
b'when in the course of barman events\n'
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string and the return value will be a string rather than bytes.
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Attributes:
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returncode: The exit code of the process, negative for signals.
stdout: The standard output (None if not captured).
stderr: The standard error (None if not captured).
Nc C s( | | _ | | _ | | _ | | _ d S)N)ra r r r )r ra r r r r r r r J s zCompletedProcess.__init__c C s� d j | j � d j | j � g } | j d k rL | j d j | j � � | j d k rt | j d j | j � � d j t | � j d j | � � S)Nz args={!r}zreturncode={!r}z stdout={!r}z stderr={!r}z{}({})z, ) �formatra r r r_ r �typer �join)r ra r r r r; P s zCompletedProcess.__repr__c C s. | j r* t | j | j | j | j � � d S)z6Raise CalledProcessError if the exit code is non-zero.N)r r
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rj rn Fc O s | d k r. d | k r$ t d � � t | d <t | | � �� } y | j | d | �\ } } Wnj t k
r� | j � | j � \ } } t | j | d | d | �� Yn | j � | j � � Yn X| j � } | r| rt | | j d | d | �� Wd QRXt
| j | | | � S)af Run command with arguments and return a CompletedProcess instance.
The returned instance will have attributes args, returncode, stdout and
stderr. By default, stdout and stderr are not captured, and those attributes
will be None. Pass stdout=PIPE and/or stderr=PIPE in order to capture them.
If check is True and the exit code was non-zero, it raises a
CalledProcessError. The CalledProcessError object will have the return code
in the returncode attribute, and output & stderr attributes if those streams
were captured.
If timeout is given, and the process takes too long, a TimeoutExpired
exception will be raised.
There is an optional argument "input", allowing you to
pass a string to the subprocess's stdin. If you use this argument
you may not also use the Popen constructor's "stdin" argument, as
it will be used internally.
The other arguments are the same as for the Popen constructor.
If universal_newlines=True is passed, the "input" argument must be a
string and stdout/stderr in the returned object will be strings rather than
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N�stdinz/stdin and input arguments may not both be used.r r
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Translate a sequence of arguments into a command line
string, using the same rules as the MS C runtime:
1) Arguments are delimited by white space, which is either a
space or a tab.
2) A string surrounded by double quotation marks is
interpreted as a single argument, regardless of white space
contained within. A quoted string can be embedded in an
argument.
3) A double quotation mark preceded by a backslash is
interpreted as a literal double quotation mark.
4) Backslashes are interpreted literally, unless they
immediately precede a double quotation mark.
5) If backslashes immediately precede a double quotation mark,
every pair of backslashes is interpreted as a literal
backslash. If the number of backslashes is odd, the last
backslash escapes the next double quotation mark as
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F� � �"�\rG z\"rl )r_ �len�extendrq )�seq�resultZ needquote�argZbs_buf�cr r r � list2cmdline� s4
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� } | | f S) a� Return (status, output) of executing cmd in a shell.
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A trailing newline is stripped from the output.
The exit status for the command can be interpreted
according to the rules for the function 'wait'. Example:
>>> import subprocess
>>> subprocess.getstatusoutput('ls /bin/ls')
(0, '/bin/ls')
>>> subprocess.getstatusoutput('cat /bin/junk')
(256, 'cat: /bin/junk: No such file or directory')
>>> subprocess.getstatusoutput('/bin/junk')
(256, 'sh: /bin/junk: not found')
�shellTrk r r NrF �
���r� )r' r" r
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c C s t | � d S)a% Return output (stdout or stderr) of executing cmd in a shell.
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'/bin/ls'
rF )r% )r r r r r& � s
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d d � Z d d d d � Z d d � Z d d � Z d d � Z e rnd d � Z d d � Z d! d" � Z d e j e j e j d# d$ � Z d d d% d& � Z d' d( � Z d) d* � Z d+ d, � Z d- d. � Z e Z! n� d/ d � Z d0 d" � Z e" j# e" j$ e" j% e" j& e" j' e" j( d1 d2 � Z) d e" j* e" j+ e, j- d3 d$ � Z d4 d5 � Z. d d d6 d& � Z d7 d* � Z d8 d9 � Z/ d: d, � Z d; d. � Z d< d= � Z! d S)?r a Execute a child program in a new process.
For a complete description of the arguments see the Python documentation.
Arguments:
args: A string, or a sequence of program arguments.
bufsize: supplied as the buffering argument to the open() function when
creating the stdin/stdout/stderr pipe file objects
executable: A replacement program to execute.
stdin, stdout and stderr: These specify the executed programs' standard
input, standard output and standard error file handles, respectively.
preexec_fn: (POSIX only) An object to be called in the child process
just before the child is executed.
close_fds: Controls closing or inheriting of file descriptors.
shell: If true, the command will be executed through the shell.
cwd: Sets the current directory before the child is executed.
env: Defines the environment variables for the new process.
universal_newlines: If true, use universal line endings for file
objects stdin, stdout and stderr.
startupinfo and creationflags (Windows only)
restore_signals (POSIX only)
start_new_session (POSIX only)
pass_fds (POSIX only)
Attributes:
stdin, stdout, stderr, pid, returncode
FrF Nr Tc C s@ t � t j � | _ d | _ d | _ | d k r: d } t | t � sU t d � � t r� | d k rs t
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� | } n d } z | j | | | � \ } } Wd d | _ X| j d | j | � � } | | f S)a4 Interact with process: Send data to stdin. Read data from
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be a string; if it is False, "input" should be bytes), or
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� � } | j | � } | | | | | | f S)z|Construct and return tuple with IO objects:
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NrF r r� r� r� r� r� r� )r� r� r� r� r� r� r� r� )r� r� r� r� )r� r� r� r� )r� r� )r< Z GetStdHandler- Z
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zPopen._execute_childc C s@ | j d k r9 | | j d � | k r9 | | j � | _ | j S)z�Check if child process has terminated. Returns returncode
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in its local scope.
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attribute.Ni� ) r� r< ZINFINITEr7 r �WaitForSingleObjectr� Z WAIT_TIMEOUTr ra �GetExitCodeProcess)r r r� Ztimeout_millisr} r r r rc � s z
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_readerthread� s zPopen._readerthreadc C s� | j re t | d � re g | _ t j d | j d | j | j f � | _ d | j _ | j j � | j r� t | d � r� g | _
t j d | j d | j | j
f � | _ d | j _ | j j � | j r� | j
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} | j j � | d k r�| d } | d k r�| d } | | f S)N� _stdout_buff�targetra T� _stderr_buffr )r r� r� r� ZThreadr� Z
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z|Construct and return tuple with IO objects:
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r�d } d }! d t! | � }" Yn Xt t" | j# d � t$ � }# |" j# d d � }" t% |# t& � r�|! r�t |! d � }$ |" d k }% |% rAd }" |$ d k r�t j' |$ � }" |$ t( j) k r�|% r�|" d t! | � 7}" n |" d t! | � 7}" |# |$ |" � � |# |" � � d S) z Execute program (POSIX version)z/bin/shz-cr NrH � =z!illegal environment variable namec 3 s- | ]# } t j j t j | � � � Vq d S)N)r� �pathrq �fsencode)�.0�dir)r� r r � <genexpr>� s z'Popen._execute_child.<locals>.<genexpr>Tr� rF iP� � :rG s SubprocessError� 0s Bad exception data from child: �ascii�errors�
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s zPopen._handle_exitstatusc C s� | j d k r� | j j d � s% d Sz� yN | j d k rA | j S| | j | � \ } } | | j k ru | j | � WnU t k
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attribute.
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zPopen._save_inputc C s& | j d k r" t j | j | � d S)z Send a signal to the process.N)r r� rd r� )r r� r r r r� � s c C s | j t j � d S)z/Terminate the process with SIGTERM
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