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| author | shadchin <shadchin@yandex-team.com> | 2023-10-10 07:21:01 +0300 |
|---|---|---|
| committer | shadchin <shadchin@yandex-team.com> | 2023-10-10 07:38:40 +0300 |
| commit | 25c03424b1ed6907903a2289fa3e4aceb67fd8a2 (patch) | |
| tree | f43d130edc5095c48f840e74d76be7da998ebb44 | |
| parent | 5dd2101e2bd35b691c97ef56ba91c3b0b548c49f (diff) | |
| download | ydb-25c03424b1ed6907903a2289fa3e4aceb67fd8a2.tar.gz | |
Split pexpect on py2/py3
42 files changed, 4571 insertions, 39 deletions
diff --git a/contrib/python/pexpect/.dist-info/METADATA b/contrib/python/pexpect/py2/.dist-info/METADATA index 4c417227db..4c417227db 100644 --- a/contrib/python/pexpect/.dist-info/METADATA +++ b/contrib/python/pexpect/py2/.dist-info/METADATA diff --git a/contrib/python/pexpect/.dist-info/top_level.txt b/contrib/python/pexpect/py2/.dist-info/top_level.txt index 808fb07afd..808fb07afd 100644 --- a/contrib/python/pexpect/.dist-info/top_level.txt +++ b/contrib/python/pexpect/py2/.dist-info/top_level.txt diff --git a/contrib/python/pexpect/LICENSE b/contrib/python/pexpect/py2/LICENSE index 754db5afcb..754db5afcb 100644 --- a/contrib/python/pexpect/LICENSE +++ b/contrib/python/pexpect/py2/LICENSE diff --git a/contrib/python/pexpect/README.rst b/contrib/python/pexpect/py2/README.rst index 85d35b98ab..85d35b98ab 100644 --- a/contrib/python/pexpect/README.rst +++ b/contrib/python/pexpect/py2/README.rst diff --git a/contrib/python/pexpect/pexpect/ANSI.py b/contrib/python/pexpect/py2/pexpect/ANSI.py index 1cd2e90e7a..1cd2e90e7a 100644 --- a/contrib/python/pexpect/pexpect/ANSI.py +++ b/contrib/python/pexpect/py2/pexpect/ANSI.py diff --git a/contrib/python/pexpect/pexpect/FSM.py b/contrib/python/pexpect/py2/pexpect/FSM.py index 46b392ea08..46b392ea08 100644 --- a/contrib/python/pexpect/pexpect/FSM.py +++ b/contrib/python/pexpect/py2/pexpect/FSM.py diff --git a/contrib/python/pexpect/pexpect/__init__.py b/contrib/python/pexpect/py2/pexpect/__init__.py index 7e30453787..7e30453787 100644 --- a/contrib/python/pexpect/pexpect/__init__.py +++ b/contrib/python/pexpect/py2/pexpect/__init__.py diff --git a/contrib/python/pexpect/pexpect/bashrc.sh b/contrib/python/pexpect/py2/pexpect/bashrc.sh index c734ac90b8..c734ac90b8 100644 --- a/contrib/python/pexpect/pexpect/bashrc.sh +++ b/contrib/python/pexpect/py2/pexpect/bashrc.sh diff --git a/contrib/python/pexpect/pexpect/exceptions.py b/contrib/python/pexpect/py2/pexpect/exceptions.py index cb360f0261..cb360f0261 100644 --- a/contrib/python/pexpect/pexpect/exceptions.py +++ b/contrib/python/pexpect/py2/pexpect/exceptions.py diff --git a/contrib/python/pexpect/pexpect/expect.py b/contrib/python/pexpect/py2/pexpect/expect.py index d3409db9d7..d3409db9d7 100644 --- a/contrib/python/pexpect/pexpect/expect.py +++ b/contrib/python/pexpect/py2/pexpect/expect.py diff --git a/contrib/python/pexpect/pexpect/fdpexpect.py b/contrib/python/pexpect/py2/pexpect/fdpexpect.py index cddd50e100..cddd50e100 100644 --- a/contrib/python/pexpect/pexpect/fdpexpect.py +++ b/contrib/python/pexpect/py2/pexpect/fdpexpect.py diff --git a/contrib/python/pexpect/pexpect/popen_spawn.py b/contrib/python/pexpect/py2/pexpect/popen_spawn.py index 4bb58cfe76..4bb58cfe76 100644 --- a/contrib/python/pexpect/pexpect/popen_spawn.py +++ b/contrib/python/pexpect/py2/pexpect/popen_spawn.py diff --git a/contrib/python/pexpect/pexpect/pty_spawn.py b/contrib/python/pexpect/py2/pexpect/pty_spawn.py index 8e28ca7cd7..8e28ca7cd7 100644 --- a/contrib/python/pexpect/pexpect/pty_spawn.py +++ b/contrib/python/pexpect/py2/pexpect/pty_spawn.py diff --git a/contrib/python/pexpect/pexpect/pxssh.py b/contrib/python/pexpect/py2/pexpect/pxssh.py index 3d53bd9746..3d53bd9746 100644 --- a/contrib/python/pexpect/pexpect/pxssh.py +++ b/contrib/python/pexpect/py2/pexpect/pxssh.py diff --git a/contrib/python/pexpect/pexpect/replwrap.py b/contrib/python/pexpect/py2/pexpect/replwrap.py index c930f1e4fe..c930f1e4fe 100644 --- a/contrib/python/pexpect/pexpect/replwrap.py +++ b/contrib/python/pexpect/py2/pexpect/replwrap.py diff --git a/contrib/python/pexpect/pexpect/run.py b/contrib/python/pexpect/py2/pexpect/run.py index ff288a1246..ff288a1246 100644 --- a/contrib/python/pexpect/pexpect/run.py +++ b/contrib/python/pexpect/py2/pexpect/run.py diff --git a/contrib/python/pexpect/pexpect/screen.py b/contrib/python/pexpect/py2/pexpect/screen.py index 79f95c4e54..79f95c4e54 100644 --- a/contrib/python/pexpect/pexpect/screen.py +++ b/contrib/python/pexpect/py2/pexpect/screen.py diff --git a/contrib/python/pexpect/pexpect/spawnbase.py b/contrib/python/pexpect/py2/pexpect/spawnbase.py index 59e905764c..59e905764c 100644 --- a/contrib/python/pexpect/pexpect/spawnbase.py +++ b/contrib/python/pexpect/py2/pexpect/spawnbase.py diff --git a/contrib/python/pexpect/pexpect/utils.py b/contrib/python/pexpect/py2/pexpect/utils.py index f774519609..f774519609 100644 --- a/contrib/python/pexpect/pexpect/utils.py +++ b/contrib/python/pexpect/py2/pexpect/utils.py diff --git a/contrib/python/pexpect/py2/ya.make b/contrib/python/pexpect/py2/ya.make new file mode 100644 index 0000000000..9dc28a63d0 --- /dev/null +++ b/contrib/python/pexpect/py2/ya.make @@ -0,0 +1,40 @@ +# Generated by devtools/yamaker (pypi). + +PY2_LIBRARY() + +VERSION(4.8.0) + +LICENSE(ISC) + +PEERDIR( + contrib/python/ptyprocess +) + +NO_LINT() + +PY_SRCS( + TOP_LEVEL + pexpect/ANSI.py + pexpect/FSM.py + pexpect/__init__.py + pexpect/exceptions.py + pexpect/expect.py + pexpect/fdpexpect.py + pexpect/popen_spawn.py + pexpect/pty_spawn.py + pexpect/pxssh.py + pexpect/replwrap.py + pexpect/run.py + pexpect/screen.py + pexpect/spawnbase.py + pexpect/utils.py +) + +RESOURCE_FILES( + PREFIX contrib/python/pexpect/py2/ + .dist-info/METADATA + .dist-info/top_level.txt + pexpect/bashrc.sh +) + +END() diff --git a/contrib/python/pexpect/py3/.dist-info/METADATA b/contrib/python/pexpect/py3/.dist-info/METADATA new file mode 100644 index 0000000000..4c417227db --- /dev/null +++ b/contrib/python/pexpect/py3/.dist-info/METADATA @@ -0,0 +1,49 @@ +Metadata-Version: 2.1 +Name: pexpect +Version: 4.8.0 +Summary: Pexpect allows easy control of interactive console applications. +Home-page: https://pexpect.readthedocs.io/ +Author: Noah Spurrier; Thomas Kluyver; Jeff Quast +Author-email: noah@noah.org, thomas@kluyver.me.uk, contact@jeffquast.com +License: ISC license +Platform: UNIX +Classifier: Development Status :: 5 - Production/Stable +Classifier: Environment :: Console +Classifier: Intended Audience :: Developers +Classifier: Intended Audience :: System Administrators +Classifier: License :: OSI Approved :: ISC License (ISCL) +Classifier: Operating System :: POSIX +Classifier: Operating System :: MacOS :: MacOS X +Classifier: Programming Language :: Python +Classifier: Programming Language :: Python :: 2.7 +Classifier: Programming Language :: Python :: 3 +Classifier: Topic :: Software Development +Classifier: Topic :: Software Development :: Libraries :: Python Modules +Classifier: Topic :: Software Development :: Quality Assurance +Classifier: Topic :: Software Development :: Testing +Classifier: Topic :: System +Classifier: Topic :: System :: Archiving :: Packaging +Classifier: Topic :: System :: Installation/Setup +Classifier: Topic :: System :: Shells +Classifier: Topic :: System :: Software Distribution +Classifier: Topic :: Terminals +Requires-Dist: ptyprocess (>=0.5) + + +Pexpect is a pure Python module for spawning child applications; controlling +them; and responding to expected patterns in their output. Pexpect works like +Don Libes' Expect. Pexpect allows your script to spawn a child application and +control it as if a human were typing commands. + +Pexpect can be used for automating interactive applications such as ssh, ftp, +passwd, telnet, etc. It can be used to a automate setup scripts for duplicating +software package installations on different servers. It can be used for +automated software testing. Pexpect is in the spirit of Don Libes' Expect, but +Pexpect is pure Python. + +The main features of Pexpect require the pty module in the Python standard +library, which is only available on Unix-like systems. Some features—waiting +for patterns from file descriptors or subprocesses—are also available on +Windows. + + diff --git a/contrib/python/pexpect/py3/.dist-info/top_level.txt b/contrib/python/pexpect/py3/.dist-info/top_level.txt new file mode 100644 index 0000000000..808fb07afd --- /dev/null +++ b/contrib/python/pexpect/py3/.dist-info/top_level.txt @@ -0,0 +1 @@ +pexpect diff --git a/contrib/python/pexpect/py3/LICENSE b/contrib/python/pexpect/py3/LICENSE new file mode 100644 index 0000000000..754db5afcb --- /dev/null +++ b/contrib/python/pexpect/py3/LICENSE @@ -0,0 +1,20 @@ +ISC LICENSE + + This license is approved by the OSI and FSF as GPL-compatible. + http://opensource.org/licenses/isc-license.txt + + Copyright (c) 2013-2014, Pexpect development team + Copyright (c) 2012, Noah Spurrier <noah@noah.org> + + Permission to use, copy, modify, and/or distribute this software for any + purpose with or without fee is hereby granted, provided that the above + copyright notice and this permission notice appear in all copies. + + THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + diff --git a/contrib/python/pexpect/py3/README.rst b/contrib/python/pexpect/py3/README.rst new file mode 100644 index 0000000000..85d35b98ab --- /dev/null +++ b/contrib/python/pexpect/py3/README.rst @@ -0,0 +1,55 @@ +.. image:: https://travis-ci.org/pexpect/pexpect.svg?branch=master + :target: https://travis-ci.org/pexpect/pexpect + :align: right + :alt: Build status + +Pexpect is a Pure Python Expect-like module + +Pexpect makes Python a better tool for controlling other applications. + +Pexpect is a pure Python module for spawning child applications; controlling +them; and responding to expected patterns in their output. Pexpect works like +Don Libes' Expect. Pexpect allows your script to spawn a child application and +control it as if a human were typing commands. + +Pexpect can be used for automating interactive applications such as ssh, ftp, +passwd, telnet, etc. It can be used to automate setup scripts for duplicating +software package installations on different servers. It can be used for +automated software testing. Pexpect is in the spirit of Don Libes' Expect, but +Pexpect is pure Python. + +The main features of Pexpect require the pty module in the Python standard +library, which is only available on Unix-like systems. Some features—waiting +for patterns from file descriptors or subprocesses—are also available on +Windows. + +If you want to work with the development version of the source code then please +read the DEVELOPERS.rst document in the root of the source code tree. + +Free, open source, and all that good stuff. + +You can install Pexpect using pip:: + + pip install pexpect + +`Docs on ReadTheDocs <https://pexpect.readthedocs.io/>`_ + +PEXPECT LICENSE:: + + http://opensource.org/licenses/isc-license.txt + + Copyright (c) 2013-2016, Pexpect development team + Copyright (c) 2012, Noah Spurrier <noah@noah.org> + + PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY + PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE + COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES. + THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + +This license is approved by the OSI and FSF as GPL-compatible. diff --git a/contrib/python/pexpect/py3/pexpect/ANSI.py b/contrib/python/pexpect/py3/pexpect/ANSI.py new file mode 100644 index 0000000000..1cd2e90e7a --- /dev/null +++ b/contrib/python/pexpect/py3/pexpect/ANSI.py @@ -0,0 +1,351 @@ +'''This implements an ANSI (VT100) terminal emulator as a subclass of screen. + +PEXPECT LICENSE + + This license is approved by the OSI and FSF as GPL-compatible. + http://opensource.org/licenses/isc-license.txt + + Copyright (c) 2012, Noah Spurrier <noah@noah.org> + PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY + PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE + COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES. + THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + +''' + +# references: +# http://en.wikipedia.org/wiki/ANSI_escape_code +# http://www.retards.org/terminals/vt102.html +# http://vt100.net/docs/vt102-ug/contents.html +# http://vt100.net/docs/vt220-rm/ +# http://www.termsys.demon.co.uk/vtansi.htm + +from . import screen +from . import FSM +import string + +# +# The 'Do.*' functions are helper functions for the ANSI class. +# +def DoEmit (fsm): + + screen = fsm.memory[0] + screen.write_ch(fsm.input_symbol) + +def DoStartNumber (fsm): + + fsm.memory.append (fsm.input_symbol) + +def DoBuildNumber (fsm): + + ns = fsm.memory.pop() + ns = ns + fsm.input_symbol + fsm.memory.append (ns) + +def DoBackOne (fsm): + + screen = fsm.memory[0] + screen.cursor_back () + +def DoBack (fsm): + + count = int(fsm.memory.pop()) + screen = fsm.memory[0] + screen.cursor_back (count) + +def DoDownOne (fsm): + + screen = fsm.memory[0] + screen.cursor_down () + +def DoDown (fsm): + + count = int(fsm.memory.pop()) + screen = fsm.memory[0] + screen.cursor_down (count) + +def DoForwardOne (fsm): + + screen = fsm.memory[0] + screen.cursor_forward () + +def DoForward (fsm): + + count = int(fsm.memory.pop()) + screen = fsm.memory[0] + screen.cursor_forward (count) + +def DoUpReverse (fsm): + + screen = fsm.memory[0] + screen.cursor_up_reverse() + +def DoUpOne (fsm): + + screen = fsm.memory[0] + screen.cursor_up () + +def DoUp (fsm): + + count = int(fsm.memory.pop()) + screen = fsm.memory[0] + screen.cursor_up (count) + +def DoHome (fsm): + + c = int(fsm.memory.pop()) + r = int(fsm.memory.pop()) + screen = fsm.memory[0] + screen.cursor_home (r,c) + +def DoHomeOrigin (fsm): + + c = 1 + r = 1 + screen = fsm.memory[0] + screen.cursor_home (r,c) + +def DoEraseDown (fsm): + + screen = fsm.memory[0] + screen.erase_down() + +def DoErase (fsm): + + arg = int(fsm.memory.pop()) + screen = fsm.memory[0] + if arg == 0: + screen.erase_down() + elif arg == 1: + screen.erase_up() + elif arg == 2: + screen.erase_screen() + +def DoEraseEndOfLine (fsm): + + screen = fsm.memory[0] + screen.erase_end_of_line() + +def DoEraseLine (fsm): + + arg = int(fsm.memory.pop()) + screen = fsm.memory[0] + if arg == 0: + screen.erase_end_of_line() + elif arg == 1: + screen.erase_start_of_line() + elif arg == 2: + screen.erase_line() + +def DoEnableScroll (fsm): + + screen = fsm.memory[0] + screen.scroll_screen() + +def DoCursorSave (fsm): + + screen = fsm.memory[0] + screen.cursor_save_attrs() + +def DoCursorRestore (fsm): + + screen = fsm.memory[0] + screen.cursor_restore_attrs() + +def DoScrollRegion (fsm): + + screen = fsm.memory[0] + r2 = int(fsm.memory.pop()) + r1 = int(fsm.memory.pop()) + screen.scroll_screen_rows (r1,r2) + +def DoMode (fsm): + + screen = fsm.memory[0] + mode = fsm.memory.pop() # Should be 4 + # screen.setReplaceMode () + +def DoLog (fsm): + + screen = fsm.memory[0] + fsm.memory = [screen] + fout = open ('log', 'a') + fout.write (fsm.input_symbol + ',' + fsm.current_state + '\n') + fout.close() + +class term (screen.screen): + + '''This class is an abstract, generic terminal. + This does nothing. This is a placeholder that + provides a common base class for other terminals + such as an ANSI terminal. ''' + + def __init__ (self, r=24, c=80, *args, **kwargs): + + screen.screen.__init__(self, r,c,*args,**kwargs) + +class ANSI (term): + '''This class implements an ANSI (VT100) terminal. + It is a stream filter that recognizes ANSI terminal + escape sequences and maintains the state of a screen object. ''' + + def __init__ (self, r=24,c=80,*args,**kwargs): + + term.__init__(self,r,c,*args,**kwargs) + + #self.screen = screen (24,80) + self.state = FSM.FSM ('INIT',[self]) + self.state.set_default_transition (DoLog, 'INIT') + self.state.add_transition_any ('INIT', DoEmit, 'INIT') + self.state.add_transition ('\x1b', 'INIT', None, 'ESC') + self.state.add_transition_any ('ESC', DoLog, 'INIT') + self.state.add_transition ('(', 'ESC', None, 'G0SCS') + self.state.add_transition (')', 'ESC', None, 'G1SCS') + self.state.add_transition_list ('AB012', 'G0SCS', None, 'INIT') + self.state.add_transition_list ('AB012', 'G1SCS', None, 'INIT') + self.state.add_transition ('7', 'ESC', DoCursorSave, 'INIT') + self.state.add_transition ('8', 'ESC', DoCursorRestore, 'INIT') + self.state.add_transition ('M', 'ESC', DoUpReverse, 'INIT') + self.state.add_transition ('>', 'ESC', DoUpReverse, 'INIT') + self.state.add_transition ('<', 'ESC', DoUpReverse, 'INIT') + self.state.add_transition ('=', 'ESC', None, 'INIT') # Selects application keypad. + self.state.add_transition ('#', 'ESC', None, 'GRAPHICS_POUND') + self.state.add_transition_any ('GRAPHICS_POUND', None, 'INIT') + self.state.add_transition ('[', 'ESC', None, 'ELB') + # ELB means Escape Left Bracket. That is ^[[ + self.state.add_transition ('H', 'ELB', DoHomeOrigin, 'INIT') + self.state.add_transition ('D', 'ELB', DoBackOne, 'INIT') + self.state.add_transition ('B', 'ELB', DoDownOne, 'INIT') + self.state.add_transition ('C', 'ELB', DoForwardOne, 'INIT') + self.state.add_transition ('A', 'ELB', DoUpOne, 'INIT') + self.state.add_transition ('J', 'ELB', DoEraseDown, 'INIT') + self.state.add_transition ('K', 'ELB', DoEraseEndOfLine, 'INIT') + self.state.add_transition ('r', 'ELB', DoEnableScroll, 'INIT') + self.state.add_transition ('m', 'ELB', self.do_sgr, 'INIT') + self.state.add_transition ('?', 'ELB', None, 'MODECRAP') + self.state.add_transition_list (string.digits, 'ELB', DoStartNumber, 'NUMBER_1') + self.state.add_transition_list (string.digits, 'NUMBER_1', DoBuildNumber, 'NUMBER_1') + self.state.add_transition ('D', 'NUMBER_1', DoBack, 'INIT') + self.state.add_transition ('B', 'NUMBER_1', DoDown, 'INIT') + self.state.add_transition ('C', 'NUMBER_1', DoForward, 'INIT') + self.state.add_transition ('A', 'NUMBER_1', DoUp, 'INIT') + self.state.add_transition ('J', 'NUMBER_1', DoErase, 'INIT') + self.state.add_transition ('K', 'NUMBER_1', DoEraseLine, 'INIT') + self.state.add_transition ('l', 'NUMBER_1', DoMode, 'INIT') + ### It gets worse... the 'm' code can have infinite number of + ### number;number;number before it. I've never seen more than two, + ### but the specs say it's allowed. crap! + self.state.add_transition ('m', 'NUMBER_1', self.do_sgr, 'INIT') + ### LED control. Same implementation problem as 'm' code. + self.state.add_transition ('q', 'NUMBER_1', self.do_decsca, 'INIT') + + # \E[?47h switch to alternate screen + # \E[?47l restores to normal screen from alternate screen. + self.state.add_transition_list (string.digits, 'MODECRAP', DoStartNumber, 'MODECRAP_NUM') + self.state.add_transition_list (string.digits, 'MODECRAP_NUM', DoBuildNumber, 'MODECRAP_NUM') + self.state.add_transition ('l', 'MODECRAP_NUM', self.do_modecrap, 'INIT') + self.state.add_transition ('h', 'MODECRAP_NUM', self.do_modecrap, 'INIT') + +#RM Reset Mode Esc [ Ps l none + self.state.add_transition (';', 'NUMBER_1', None, 'SEMICOLON') + self.state.add_transition_any ('SEMICOLON', DoLog, 'INIT') + self.state.add_transition_list (string.digits, 'SEMICOLON', DoStartNumber, 'NUMBER_2') + self.state.add_transition_list (string.digits, 'NUMBER_2', DoBuildNumber, 'NUMBER_2') + self.state.add_transition_any ('NUMBER_2', DoLog, 'INIT') + self.state.add_transition ('H', 'NUMBER_2', DoHome, 'INIT') + self.state.add_transition ('f', 'NUMBER_2', DoHome, 'INIT') + self.state.add_transition ('r', 'NUMBER_2', DoScrollRegion, 'INIT') + ### It gets worse... the 'm' code can have infinite number of + ### number;number;number before it. I've never seen more than two, + ### but the specs say it's allowed. crap! + self.state.add_transition ('m', 'NUMBER_2', self.do_sgr, 'INIT') + ### LED control. Same problem as 'm' code. + self.state.add_transition ('q', 'NUMBER_2', self.do_decsca, 'INIT') + self.state.add_transition (';', 'NUMBER_2', None, 'SEMICOLON_X') + + # Create a state for 'q' and 'm' which allows an infinite number of ignored numbers + self.state.add_transition_any ('SEMICOLON_X', DoLog, 'INIT') + self.state.add_transition_list (string.digits, 'SEMICOLON_X', DoStartNumber, 'NUMBER_X') + self.state.add_transition_list (string.digits, 'NUMBER_X', DoBuildNumber, 'NUMBER_X') + self.state.add_transition_any ('NUMBER_X', DoLog, 'INIT') + self.state.add_transition ('m', 'NUMBER_X', self.do_sgr, 'INIT') + self.state.add_transition ('q', 'NUMBER_X', self.do_decsca, 'INIT') + self.state.add_transition (';', 'NUMBER_X', None, 'SEMICOLON_X') + + def process (self, c): + """Process a single character. Called by :meth:`write`.""" + if isinstance(c, bytes): + c = self._decode(c) + self.state.process(c) + + def process_list (self, l): + + self.write(l) + + def write (self, s): + """Process text, writing it to the virtual screen while handling + ANSI escape codes. + """ + if isinstance(s, bytes): + s = self._decode(s) + for c in s: + self.process(c) + + def flush (self): + pass + + def write_ch (self, ch): + '''This puts a character at the current cursor position. The cursor + position is moved forward with wrap-around, but no scrolling is done if + the cursor hits the lower-right corner of the screen. ''' + + if isinstance(ch, bytes): + ch = self._decode(ch) + + #\r and \n both produce a call to cr() and lf(), respectively. + ch = ch[0] + + if ch == u'\r': + self.cr() + return + if ch == u'\n': + self.crlf() + return + if ch == chr(screen.BS): + self.cursor_back() + return + self.put_abs(self.cur_r, self.cur_c, ch) + old_r = self.cur_r + old_c = self.cur_c + self.cursor_forward() + if old_c == self.cur_c: + self.cursor_down() + if old_r != self.cur_r: + self.cursor_home (self.cur_r, 1) + else: + self.scroll_up () + self.cursor_home (self.cur_r, 1) + self.erase_line() + + def do_sgr (self, fsm): + '''Select Graphic Rendition, e.g. color. ''' + screen = fsm.memory[0] + fsm.memory = [screen] + + def do_decsca (self, fsm): + '''Select character protection attribute. ''' + screen = fsm.memory[0] + fsm.memory = [screen] + + def do_modecrap (self, fsm): + '''Handler for \x1b[?<number>h and \x1b[?<number>l. If anyone + wanted to actually use these, they'd need to add more states to the + FSM rather than just improve or override this method. ''' + screen = fsm.memory[0] + fsm.memory = [screen] diff --git a/contrib/python/pexpect/py3/pexpect/FSM.py b/contrib/python/pexpect/py3/pexpect/FSM.py new file mode 100644 index 0000000000..46b392ea08 --- /dev/null +++ b/contrib/python/pexpect/py3/pexpect/FSM.py @@ -0,0 +1,334 @@ +#!/usr/bin/env python + +'''This module implements a Finite State Machine (FSM). In addition to state +this FSM also maintains a user defined "memory". So this FSM can be used as a +Push-down Automata (PDA) since a PDA is a FSM + memory. + +The following describes how the FSM works, but you will probably also need to +see the example function to understand how the FSM is used in practice. + +You define an FSM by building tables of transitions. For a given input symbol +the process() method uses these tables to decide what action to call and what +the next state will be. The FSM has a table of transitions that associate: + + (input_symbol, current_state) --> (action, next_state) + +Where "action" is a function you define. The symbols and states can be any +objects. You use the add_transition() and add_transition_list() methods to add +to the transition table. The FSM also has a table of transitions that +associate: + + (current_state) --> (action, next_state) + +You use the add_transition_any() method to add to this transition table. The +FSM also has one default transition that is not associated with any specific +input_symbol or state. You use the set_default_transition() method to set the +default transition. + +When an action function is called it is passed a reference to the FSM. The +action function may then access attributes of the FSM such as input_symbol, +current_state, or "memory". The "memory" attribute can be any object that you +want to pass along to the action functions. It is not used by the FSM itself. +For parsing you would typically pass a list to be used as a stack. + +The processing sequence is as follows. The process() method is given an +input_symbol to process. The FSM will search the table of transitions that +associate: + + (input_symbol, current_state) --> (action, next_state) + +If the pair (input_symbol, current_state) is found then process() will call the +associated action function and then set the current state to the next_state. + +If the FSM cannot find a match for (input_symbol, current_state) it will then +search the table of transitions that associate: + + (current_state) --> (action, next_state) + +If the current_state is found then the process() method will call the +associated action function and then set the current state to the next_state. +Notice that this table lacks an input_symbol. It lets you define transitions +for a current_state and ANY input_symbol. Hence, it is called the "any" table. +Remember, it is always checked after first searching the table for a specific +(input_symbol, current_state). + +For the case where the FSM did not match either of the previous two cases the +FSM will try to use the default transition. If the default transition is +defined then the process() method will call the associated action function and +then set the current state to the next_state. This lets you define a default +transition as a catch-all case. You can think of it as an exception handler. +There can be only one default transition. + +Finally, if none of the previous cases are defined for an input_symbol and +current_state then the FSM will raise an exception. This may be desirable, but +you can always prevent this just by defining a default transition. + +Noah Spurrier 20020822 + +PEXPECT LICENSE + + This license is approved by the OSI and FSF as GPL-compatible. + http://opensource.org/licenses/isc-license.txt + + Copyright (c) 2012, Noah Spurrier <noah@noah.org> + PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY + PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE + COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES. + THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + +''' + +class ExceptionFSM(Exception): + + '''This is the FSM Exception class.''' + + def __init__(self, value): + self.value = value + + def __str__(self): + return 'ExceptionFSM: ' + str(self.value) + +class FSM: + + '''This is a Finite State Machine (FSM). + ''' + + def __init__(self, initial_state, memory=None): + + '''This creates the FSM. You set the initial state here. The "memory" + attribute is any object that you want to pass along to the action + functions. It is not used by the FSM. For parsing you would typically + pass a list to be used as a stack. ''' + + # Map (input_symbol, current_state) --> (action, next_state). + self.state_transitions = {} + # Map (current_state) --> (action, next_state). + self.state_transitions_any = {} + self.default_transition = None + + self.input_symbol = None + self.initial_state = initial_state + self.current_state = self.initial_state + self.next_state = None + self.action = None + self.memory = memory + + def reset (self): + + '''This sets the current_state to the initial_state and sets + input_symbol to None. The initial state was set by the constructor + __init__(). ''' + + self.current_state = self.initial_state + self.input_symbol = None + + def add_transition (self, input_symbol, state, action=None, next_state=None): + + '''This adds a transition that associates: + + (input_symbol, current_state) --> (action, next_state) + + The action may be set to None in which case the process() method will + ignore the action and only set the next_state. The next_state may be + set to None in which case the current state will be unchanged. + + You can also set transitions for a list of symbols by using + add_transition_list(). ''' + + if next_state is None: + next_state = state + self.state_transitions[(input_symbol, state)] = (action, next_state) + + def add_transition_list (self, list_input_symbols, state, action=None, next_state=None): + + '''This adds the same transition for a list of input symbols. + You can pass a list or a string. Note that it is handy to use + string.digits, string.whitespace, string.letters, etc. to add + transitions that match character classes. + + The action may be set to None in which case the process() method will + ignore the action and only set the next_state. The next_state may be + set to None in which case the current state will be unchanged. ''' + + if next_state is None: + next_state = state + for input_symbol in list_input_symbols: + self.add_transition (input_symbol, state, action, next_state) + + def add_transition_any (self, state, action=None, next_state=None): + + '''This adds a transition that associates: + + (current_state) --> (action, next_state) + + That is, any input symbol will match the current state. + The process() method checks the "any" state associations after it first + checks for an exact match of (input_symbol, current_state). + + The action may be set to None in which case the process() method will + ignore the action and only set the next_state. The next_state may be + set to None in which case the current state will be unchanged. ''' + + if next_state is None: + next_state = state + self.state_transitions_any [state] = (action, next_state) + + def set_default_transition (self, action, next_state): + + '''This sets the default transition. This defines an action and + next_state if the FSM cannot find the input symbol and the current + state in the transition list and if the FSM cannot find the + current_state in the transition_any list. This is useful as a final + fall-through state for catching errors and undefined states. + + The default transition can be removed by setting the attribute + default_transition to None. ''' + + self.default_transition = (action, next_state) + + def get_transition (self, input_symbol, state): + + '''This returns (action, next state) given an input_symbol and state. + This does not modify the FSM state, so calling this method has no side + effects. Normally you do not call this method directly. It is called by + process(). + + The sequence of steps to check for a defined transition goes from the + most specific to the least specific. + + 1. Check state_transitions[] that match exactly the tuple, + (input_symbol, state) + + 2. Check state_transitions_any[] that match (state) + In other words, match a specific state and ANY input_symbol. + + 3. Check if the default_transition is defined. + This catches any input_symbol and any state. + This is a handler for errors, undefined states, or defaults. + + 4. No transition was defined. If we get here then raise an exception. + ''' + + if (input_symbol, state) in self.state_transitions: + return self.state_transitions[(input_symbol, state)] + elif state in self.state_transitions_any: + return self.state_transitions_any[state] + elif self.default_transition is not None: + return self.default_transition + else: + raise ExceptionFSM ('Transition is undefined: (%s, %s).' % + (str(input_symbol), str(state)) ) + + def process (self, input_symbol): + + '''This is the main method that you call to process input. This may + cause the FSM to change state and call an action. This method calls + get_transition() to find the action and next_state associated with the + input_symbol and current_state. If the action is None then the action + is not called and only the current state is changed. This method + processes one complete input symbol. You can process a list of symbols + (or a string) by calling process_list(). ''' + + self.input_symbol = input_symbol + (self.action, self.next_state) = self.get_transition (self.input_symbol, self.current_state) + if self.action is not None: + self.action (self) + self.current_state = self.next_state + self.next_state = None + + def process_list (self, input_symbols): + + '''This takes a list and sends each element to process(). The list may + be a string or any iterable object. ''' + + for s in input_symbols: + self.process (s) + +############################################################################## +# The following is an example that demonstrates the use of the FSM class to +# process an RPN expression. Run this module from the command line. You will +# get a prompt > for input. Enter an RPN Expression. Numbers may be integers. +# Operators are * / + - Use the = sign to evaluate and print the expression. +# For example: +# +# 167 3 2 2 * * * 1 - = +# +# will print: +# +# 2003 +############################################################################## + +import sys +import string + +PY3 = (sys.version_info[0] >= 3) + +# +# These define the actions. +# Note that "memory" is a list being used as a stack. +# + +def BeginBuildNumber (fsm): + fsm.memory.append (fsm.input_symbol) + +def BuildNumber (fsm): + s = fsm.memory.pop () + s = s + fsm.input_symbol + fsm.memory.append (s) + +def EndBuildNumber (fsm): + s = fsm.memory.pop () + fsm.memory.append (int(s)) + +def DoOperator (fsm): + ar = fsm.memory.pop() + al = fsm.memory.pop() + if fsm.input_symbol == '+': + fsm.memory.append (al + ar) + elif fsm.input_symbol == '-': + fsm.memory.append (al - ar) + elif fsm.input_symbol == '*': + fsm.memory.append (al * ar) + elif fsm.input_symbol == '/': + fsm.memory.append (al / ar) + +def DoEqual (fsm): + print(str(fsm.memory.pop())) + +def Error (fsm): + print('That does not compute.') + print(str(fsm.input_symbol)) + +def main(): + + '''This is where the example starts and the FSM state transitions are + defined. Note that states are strings (such as 'INIT'). This is not + necessary, but it makes the example easier to read. ''' + + f = FSM ('INIT', []) + f.set_default_transition (Error, 'INIT') + f.add_transition_any ('INIT', None, 'INIT') + f.add_transition ('=', 'INIT', DoEqual, 'INIT') + f.add_transition_list (string.digits, 'INIT', BeginBuildNumber, 'BUILDING_NUMBER') + f.add_transition_list (string.digits, 'BUILDING_NUMBER', BuildNumber, 'BUILDING_NUMBER') + f.add_transition_list (string.whitespace, 'BUILDING_NUMBER', EndBuildNumber, 'INIT') + f.add_transition_list ('+-*/', 'INIT', DoOperator, 'INIT') + + print() + print('Enter an RPN Expression.') + print('Numbers may be integers. Operators are * / + -') + print('Use the = sign to evaluate and print the expression.') + print('For example: ') + print(' 167 3 2 2 * * * 1 - =') + inputstr = (input if PY3 else raw_input)('> ') # analysis:ignore + f.process_list(inputstr) + + +if __name__ == '__main__': + main() diff --git a/contrib/python/pexpect/py3/pexpect/__init__.py b/contrib/python/pexpect/py3/pexpect/__init__.py new file mode 100644 index 0000000000..7e30453787 --- /dev/null +++ b/contrib/python/pexpect/py3/pexpect/__init__.py @@ -0,0 +1,85 @@ +'''Pexpect is a Python module for spawning child applications and controlling +them automatically. Pexpect can be used for automating interactive applications +such as ssh, ftp, passwd, telnet, etc. It can be used to a automate setup +scripts for duplicating software package installations on different servers. It +can be used for automated software testing. Pexpect is in the spirit of Don +Libes' Expect, but Pexpect is pure Python. Other Expect-like modules for Python +require TCL and Expect or require C extensions to be compiled. Pexpect does not +use C, Expect, or TCL extensions. It should work on any platform that supports +the standard Python pty module. The Pexpect interface focuses on ease of use so +that simple tasks are easy. + +There are two main interfaces to the Pexpect system; these are the function, +run() and the class, spawn. The spawn class is more powerful. The run() +function is simpler than spawn, and is good for quickly calling program. When +you call the run() function it executes a given program and then returns the +output. This is a handy replacement for os.system(). + +For example:: + + pexpect.run('ls -la') + +The spawn class is the more powerful interface to the Pexpect system. You can +use this to spawn a child program then interact with it by sending input and +expecting responses (waiting for patterns in the child's output). + +For example:: + + child = pexpect.spawn('scp foo user@example.com:.') + child.expect('Password:') + child.sendline(mypassword) + +This works even for commands that ask for passwords or other input outside of +the normal stdio streams. For example, ssh reads input directly from the TTY +device which bypasses stdin. + +Credits: Noah Spurrier, Richard Holden, Marco Molteni, Kimberley Burchett, +Robert Stone, Hartmut Goebel, Chad Schroeder, Erick Tryzelaar, Dave Kirby, Ids +vander Molen, George Todd, Noel Taylor, Nicolas D. Cesar, Alexander Gattin, +Jacques-Etienne Baudoux, Geoffrey Marshall, Francisco Lourenco, Glen Mabey, +Karthik Gurusamy, Fernando Perez, Corey Minyard, Jon Cohen, Guillaume +Chazarain, Andrew Ryan, Nick Craig-Wood, Andrew Stone, Jorgen Grahn, John +Spiegel, Jan Grant, and Shane Kerr. Let me know if I forgot anyone. + +Pexpect is free, open source, and all that good stuff. +http://pexpect.sourceforge.net/ + +PEXPECT LICENSE + + This license is approved by the OSI and FSF as GPL-compatible. + http://opensource.org/licenses/isc-license.txt + + Copyright (c) 2012, Noah Spurrier <noah@noah.org> + PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY + PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE + COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES. + THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + +''' + +import sys +PY3 = (sys.version_info[0] >= 3) + +from .exceptions import ExceptionPexpect, EOF, TIMEOUT +from .utils import split_command_line, which, is_executable_file +from .expect import Expecter, searcher_re, searcher_string + +if sys.platform != 'win32': + # On Unix, these are available at the top level for backwards compatibility + from .pty_spawn import spawn, spawnu + from .run import run, runu + +__version__ = '4.8.0' +__revision__ = '' +__all__ = ['ExceptionPexpect', 'EOF', 'TIMEOUT', 'spawn', 'spawnu', 'run', 'runu', + 'which', 'split_command_line', '__version__', '__revision__'] + + + +# vim: set shiftround expandtab tabstop=4 shiftwidth=4 ft=python autoindent : diff --git a/contrib/python/pexpect/pexpect/_async.py b/contrib/python/pexpect/py3/pexpect/_async.py index bc83261d25..bc83261d25 100644 --- a/contrib/python/pexpect/pexpect/_async.py +++ b/contrib/python/pexpect/py3/pexpect/_async.py diff --git a/contrib/python/pexpect/py3/pexpect/bashrc.sh b/contrib/python/pexpect/py3/pexpect/bashrc.sh new file mode 100644 index 0000000000..c734ac90b8 --- /dev/null +++ b/contrib/python/pexpect/py3/pexpect/bashrc.sh @@ -0,0 +1,16 @@ +# Different platforms have different names for the systemwide bashrc +if [[ -f /etc/bashrc ]]; then + source /etc/bashrc +fi +if [[ -f /etc/bash.bashrc ]]; then + source /etc/bash.bashrc +fi +if [[ -f ~/.bashrc ]]; then + source ~/.bashrc +fi + +# Reset PS1 so pexpect can find it +PS1="$" + +# Unset PROMPT_COMMAND, so that it can't change PS1 to something unexpected. +unset PROMPT_COMMAND diff --git a/contrib/python/pexpect/py3/pexpect/exceptions.py b/contrib/python/pexpect/py3/pexpect/exceptions.py new file mode 100644 index 0000000000..cb360f0261 --- /dev/null +++ b/contrib/python/pexpect/py3/pexpect/exceptions.py @@ -0,0 +1,35 @@ +"""Exception classes used by Pexpect""" + +import traceback +import sys + +class ExceptionPexpect(Exception): + '''Base class for all exceptions raised by this module. + ''' + + def __init__(self, value): + super(ExceptionPexpect, self).__init__(value) + self.value = value + + def __str__(self): + return str(self.value) + + def get_trace(self): + '''This returns an abbreviated stack trace with lines that only concern + the caller. In other words, the stack trace inside the Pexpect module + is not included. ''' + + tblist = traceback.extract_tb(sys.exc_info()[2]) + tblist = [item for item in tblist if ('pexpect/__init__' not in item[0]) + and ('pexpect/expect' not in item[0])] + tblist = traceback.format_list(tblist) + return ''.join(tblist) + + +class EOF(ExceptionPexpect): + '''Raised when EOF is read from a child. + This usually means the child has exited.''' + + +class TIMEOUT(ExceptionPexpect): + '''Raised when a read time exceeds the timeout. ''' diff --git a/contrib/python/pexpect/py3/pexpect/expect.py b/contrib/python/pexpect/py3/pexpect/expect.py new file mode 100644 index 0000000000..d3409db9d7 --- /dev/null +++ b/contrib/python/pexpect/py3/pexpect/expect.py @@ -0,0 +1,371 @@ +import time + +from .exceptions import EOF, TIMEOUT + +class Expecter(object): + def __init__(self, spawn, searcher, searchwindowsize=-1): + self.spawn = spawn + self.searcher = searcher + # A value of -1 means to use the figure from spawn, which should + # be None or a positive number. + if searchwindowsize == -1: + searchwindowsize = spawn.searchwindowsize + self.searchwindowsize = searchwindowsize + self.lookback = None + if hasattr(searcher, 'longest_string'): + self.lookback = searcher.longest_string + + def do_search(self, window, freshlen): + spawn = self.spawn + searcher = self.searcher + if freshlen > len(window): + freshlen = len(window) + index = searcher.search(window, freshlen, self.searchwindowsize) + if index >= 0: + spawn._buffer = spawn.buffer_type() + spawn._buffer.write(window[searcher.end:]) + spawn.before = spawn._before.getvalue()[ + 0:-(len(window) - searcher.start)] + spawn._before = spawn.buffer_type() + spawn._before.write(window[searcher.end:]) + spawn.after = window[searcher.start:searcher.end] + spawn.match = searcher.match + spawn.match_index = index + # Found a match + return index + elif self.searchwindowsize or self.lookback: + maintain = self.searchwindowsize or self.lookback + if spawn._buffer.tell() > maintain: + spawn._buffer = spawn.buffer_type() + spawn._buffer.write(window[-maintain:]) + + def existing_data(self): + # First call from a new call to expect_loop or expect_async. + # self.searchwindowsize may have changed. + # Treat all data as fresh. + spawn = self.spawn + before_len = spawn._before.tell() + buf_len = spawn._buffer.tell() + freshlen = before_len + if before_len > buf_len: + if not self.searchwindowsize: + spawn._buffer = spawn.buffer_type() + window = spawn._before.getvalue() + spawn._buffer.write(window) + elif buf_len < self.searchwindowsize: + spawn._buffer = spawn.buffer_type() + spawn._before.seek( + max(0, before_len - self.searchwindowsize)) + window = spawn._before.read() + spawn._buffer.write(window) + else: + spawn._buffer.seek(max(0, buf_len - self.searchwindowsize)) + window = spawn._buffer.read() + else: + if self.searchwindowsize: + spawn._buffer.seek(max(0, buf_len - self.searchwindowsize)) + window = spawn._buffer.read() + else: + window = spawn._buffer.getvalue() + return self.do_search(window, freshlen) + + def new_data(self, data): + # A subsequent call, after a call to existing_data. + spawn = self.spawn + freshlen = len(data) + spawn._before.write(data) + if not self.searchwindowsize: + if self.lookback: + # search lookback + new data. + old_len = spawn._buffer.tell() + spawn._buffer.write(data) + spawn._buffer.seek(max(0, old_len - self.lookback)) + window = spawn._buffer.read() + else: + # copy the whole buffer (really slow for large datasets). + spawn._buffer.write(data) + window = spawn.buffer + else: + if len(data) >= self.searchwindowsize or not spawn._buffer.tell(): + window = data[-self.searchwindowsize:] + spawn._buffer = spawn.buffer_type() + spawn._buffer.write(window[-self.searchwindowsize:]) + else: + spawn._buffer.write(data) + new_len = spawn._buffer.tell() + spawn._buffer.seek(max(0, new_len - self.searchwindowsize)) + window = spawn._buffer.read() + return self.do_search(window, freshlen) + + def eof(self, err=None): + spawn = self.spawn + + spawn.before = spawn._before.getvalue() + spawn._buffer = spawn.buffer_type() + spawn._before = spawn.buffer_type() + spawn.after = EOF + index = self.searcher.eof_index + if index >= 0: + spawn.match = EOF + spawn.match_index = index + return index + else: + spawn.match = None + spawn.match_index = None + msg = str(spawn) + msg += '\nsearcher: %s' % self.searcher + if err is not None: + msg = str(err) + '\n' + msg + + exc = EOF(msg) + exc.__cause__ = None # in Python 3.x we can use "raise exc from None" + raise exc + + def timeout(self, err=None): + spawn = self.spawn + + spawn.before = spawn._before.getvalue() + spawn.after = TIMEOUT + index = self.searcher.timeout_index + if index >= 0: + spawn.match = TIMEOUT + spawn.match_index = index + return index + else: + spawn.match = None + spawn.match_index = None + msg = str(spawn) + msg += '\nsearcher: %s' % self.searcher + if err is not None: + msg = str(err) + '\n' + msg + + exc = TIMEOUT(msg) + exc.__cause__ = None # in Python 3.x we can use "raise exc from None" + raise exc + + def errored(self): + spawn = self.spawn + spawn.before = spawn._before.getvalue() + spawn.after = None + spawn.match = None + spawn.match_index = None + + def expect_loop(self, timeout=-1): + """Blocking expect""" + spawn = self.spawn + + if timeout is not None: + end_time = time.time() + timeout + + try: + idx = self.existing_data() + if idx is not None: + return idx + while True: + # No match at this point + if (timeout is not None) and (timeout < 0): + return self.timeout() + # Still have time left, so read more data + incoming = spawn.read_nonblocking(spawn.maxread, timeout) + if self.spawn.delayafterread is not None: + time.sleep(self.spawn.delayafterread) + idx = self.new_data(incoming) + # Keep reading until exception or return. + if idx is not None: + return idx + if timeout is not None: + timeout = end_time - time.time() + except EOF as e: + return self.eof(e) + except TIMEOUT as e: + return self.timeout(e) + except: + self.errored() + raise + + +class searcher_string(object): + '''This is a plain string search helper for the spawn.expect_any() method. + This helper class is for speed. For more powerful regex patterns + see the helper class, searcher_re. + + Attributes: + + eof_index - index of EOF, or -1 + timeout_index - index of TIMEOUT, or -1 + + After a successful match by the search() method the following attributes + are available: + + start - index into the buffer, first byte of match + end - index into the buffer, first byte after match + match - the matching string itself + + ''' + + def __init__(self, strings): + '''This creates an instance of searcher_string. This argument 'strings' + may be a list; a sequence of strings; or the EOF or TIMEOUT types. ''' + + self.eof_index = -1 + self.timeout_index = -1 + self._strings = [] + self.longest_string = 0 + for n, s in enumerate(strings): + if s is EOF: + self.eof_index = n + continue + if s is TIMEOUT: + self.timeout_index = n + continue + self._strings.append((n, s)) + if len(s) > self.longest_string: + self.longest_string = len(s) + + def __str__(self): + '''This returns a human-readable string that represents the state of + the object.''' + + ss = [(ns[0], ' %d: %r' % ns) for ns in self._strings] + ss.append((-1, 'searcher_string:')) + if self.eof_index >= 0: + ss.append((self.eof_index, ' %d: EOF' % self.eof_index)) + if self.timeout_index >= 0: + ss.append((self.timeout_index, + ' %d: TIMEOUT' % self.timeout_index)) + ss.sort() + ss = list(zip(*ss))[1] + return '\n'.join(ss) + + def search(self, buffer, freshlen, searchwindowsize=None): + '''This searches 'buffer' for the first occurrence of one of the search + strings. 'freshlen' must indicate the number of bytes at the end of + 'buffer' which have not been searched before. It helps to avoid + searching the same, possibly big, buffer over and over again. + + See class spawn for the 'searchwindowsize' argument. + + If there is a match this returns the index of that string, and sets + 'start', 'end' and 'match'. Otherwise, this returns -1. ''' + + first_match = None + + # 'freshlen' helps a lot here. Further optimizations could + # possibly include: + # + # using something like the Boyer-Moore Fast String Searching + # Algorithm; pre-compiling the search through a list of + # strings into something that can scan the input once to + # search for all N strings; realize that if we search for + # ['bar', 'baz'] and the input is '...foo' we need not bother + # rescanning until we've read three more bytes. + # + # Sadly, I don't know enough about this interesting topic. /grahn + + for index, s in self._strings: + if searchwindowsize is None: + # the match, if any, can only be in the fresh data, + # or at the very end of the old data + offset = -(freshlen + len(s)) + else: + # better obey searchwindowsize + offset = -searchwindowsize + n = buffer.find(s, offset) + if n >= 0 and (first_match is None or n < first_match): + first_match = n + best_index, best_match = index, s + if first_match is None: + return -1 + self.match = best_match + self.start = first_match + self.end = self.start + len(self.match) + return best_index + + +class searcher_re(object): + '''This is regular expression string search helper for the + spawn.expect_any() method. This helper class is for powerful + pattern matching. For speed, see the helper class, searcher_string. + + Attributes: + + eof_index - index of EOF, or -1 + timeout_index - index of TIMEOUT, or -1 + + After a successful match by the search() method the following attributes + are available: + + start - index into the buffer, first byte of match + end - index into the buffer, first byte after match + match - the re.match object returned by a successful re.search + + ''' + + def __init__(self, patterns): + '''This creates an instance that searches for 'patterns' Where + 'patterns' may be a list or other sequence of compiled regular + expressions, or the EOF or TIMEOUT types.''' + + self.eof_index = -1 + self.timeout_index = -1 + self._searches = [] + for n, s in enumerate(patterns): + if s is EOF: + self.eof_index = n + continue + if s is TIMEOUT: + self.timeout_index = n + continue + self._searches.append((n, s)) + + def __str__(self): + '''This returns a human-readable string that represents the state of + the object.''' + + #ss = [(n, ' %d: re.compile("%s")' % + # (n, repr(s.pattern))) for n, s in self._searches] + ss = list() + for n, s in self._searches: + ss.append((n, ' %d: re.compile(%r)' % (n, s.pattern))) + ss.append((-1, 'searcher_re:')) + if self.eof_index >= 0: + ss.append((self.eof_index, ' %d: EOF' % self.eof_index)) + if self.timeout_index >= 0: + ss.append((self.timeout_index, ' %d: TIMEOUT' % + self.timeout_index)) + ss.sort() + ss = list(zip(*ss))[1] + return '\n'.join(ss) + + def search(self, buffer, freshlen, searchwindowsize=None): + '''This searches 'buffer' for the first occurrence of one of the regular + expressions. 'freshlen' must indicate the number of bytes at the end of + 'buffer' which have not been searched before. + + See class spawn for the 'searchwindowsize' argument. + + If there is a match this returns the index of that string, and sets + 'start', 'end' and 'match'. Otherwise, returns -1.''' + + first_match = None + # 'freshlen' doesn't help here -- we cannot predict the + # length of a match, and the re module provides no help. + if searchwindowsize is None: + searchstart = 0 + else: + searchstart = max(0, len(buffer) - searchwindowsize) + for index, s in self._searches: + match = s.search(buffer, searchstart) + if match is None: + continue + n = match.start() + if first_match is None or n < first_match: + first_match = n + the_match = match + best_index = index + if first_match is None: + return -1 + self.start = first_match + self.match = the_match + self.end = self.match.end() + return best_index diff --git a/contrib/python/pexpect/py3/pexpect/fdpexpect.py b/contrib/python/pexpect/py3/pexpect/fdpexpect.py new file mode 100644 index 0000000000..cddd50e100 --- /dev/null +++ b/contrib/python/pexpect/py3/pexpect/fdpexpect.py @@ -0,0 +1,148 @@ +'''This is like pexpect, but it will work with any file descriptor that you +pass it. You are responsible for opening and close the file descriptor. +This allows you to use Pexpect with sockets and named pipes (FIFOs). + +PEXPECT LICENSE + + This license is approved by the OSI and FSF as GPL-compatible. + http://opensource.org/licenses/isc-license.txt + + Copyright (c) 2012, Noah Spurrier <noah@noah.org> + PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY + PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE + COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES. + THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + +''' + +from .spawnbase import SpawnBase +from .exceptions import ExceptionPexpect, TIMEOUT +from .utils import select_ignore_interrupts, poll_ignore_interrupts +import os + +__all__ = ['fdspawn'] + +class fdspawn(SpawnBase): + '''This is like pexpect.spawn but allows you to supply your own open file + descriptor. For example, you could use it to read through a file looking + for patterns, or to control a modem or serial device. ''' + + def __init__ (self, fd, args=None, timeout=30, maxread=2000, searchwindowsize=None, + logfile=None, encoding=None, codec_errors='strict', use_poll=False): + '''This takes a file descriptor (an int) or an object that support the + fileno() method (returning an int). All Python file-like objects + support fileno(). ''' + + if type(fd) != type(0) and hasattr(fd, 'fileno'): + fd = fd.fileno() + + if type(fd) != type(0): + raise ExceptionPexpect('The fd argument is not an int. If this is a command string then maybe you want to use pexpect.spawn.') + + try: # make sure fd is a valid file descriptor + os.fstat(fd) + except OSError: + raise ExceptionPexpect('The fd argument is not a valid file descriptor.') + + self.args = None + self.command = None + SpawnBase.__init__(self, timeout, maxread, searchwindowsize, logfile, + encoding=encoding, codec_errors=codec_errors) + self.child_fd = fd + self.own_fd = False + self.closed = False + self.name = '<file descriptor %d>' % fd + self.use_poll = use_poll + + def close (self): + """Close the file descriptor. + + Calling this method a second time does nothing, but if the file + descriptor was closed elsewhere, :class:`OSError` will be raised. + """ + if self.child_fd == -1: + return + + self.flush() + os.close(self.child_fd) + self.child_fd = -1 + self.closed = True + + def isalive (self): + '''This checks if the file descriptor is still valid. If :func:`os.fstat` + does not raise an exception then we assume it is alive. ''' + + if self.child_fd == -1: + return False + try: + os.fstat(self.child_fd) + return True + except: + return False + + def terminate (self, force=False): # pragma: no cover + '''Deprecated and invalid. Just raises an exception.''' + raise ExceptionPexpect('This method is not valid for file descriptors.') + + # These four methods are left around for backwards compatibility, but not + # documented as part of fdpexpect. You're encouraged to use os.write + # directly. + def send(self, s): + "Write to fd, return number of bytes written" + s = self._coerce_send_string(s) + self._log(s, 'send') + + b = self._encoder.encode(s, final=False) + return os.write(self.child_fd, b) + + def sendline(self, s): + "Write to fd with trailing newline, return number of bytes written" + s = self._coerce_send_string(s) + return self.send(s + self.linesep) + + def write(self, s): + "Write to fd, return None" + self.send(s) + + def writelines(self, sequence): + "Call self.write() for each item in sequence" + for s in sequence: + self.write(s) + + def read_nonblocking(self, size=1, timeout=-1): + """ + Read from the file descriptor and return the result as a string. + + The read_nonblocking method of :class:`SpawnBase` assumes that a call + to os.read will not block (timeout parameter is ignored). This is not + the case for POSIX file-like objects such as sockets and serial ports. + + Use :func:`select.select`, timeout is implemented conditionally for + POSIX systems. + + :param int size: Read at most *size* bytes. + :param int timeout: Wait timeout seconds for file descriptor to be + ready to read. When -1 (default), use self.timeout. When 0, poll. + :return: String containing the bytes read + """ + if os.name == 'posix': + if timeout == -1: + timeout = self.timeout + rlist = [self.child_fd] + wlist = [] + xlist = [] + if self.use_poll: + rlist = poll_ignore_interrupts(rlist, timeout) + else: + rlist, wlist, xlist = select_ignore_interrupts( + rlist, wlist, xlist, timeout + ) + if self.child_fd not in rlist: + raise TIMEOUT('Timeout exceeded.') + return super(fdspawn, self).read_nonblocking(size) diff --git a/contrib/python/pexpect/py3/pexpect/popen_spawn.py b/contrib/python/pexpect/py3/pexpect/popen_spawn.py new file mode 100644 index 0000000000..4bb58cfe76 --- /dev/null +++ b/contrib/python/pexpect/py3/pexpect/popen_spawn.py @@ -0,0 +1,188 @@ +"""Provides an interface like pexpect.spawn interface using subprocess.Popen +""" +import os +import threading +import subprocess +import sys +import time +import signal +import shlex + +try: + from queue import Queue, Empty # Python 3 +except ImportError: + from Queue import Queue, Empty # Python 2 + +from .spawnbase import SpawnBase, PY3 +from .exceptions import EOF +from .utils import string_types + +class PopenSpawn(SpawnBase): + def __init__(self, cmd, timeout=30, maxread=2000, searchwindowsize=None, + logfile=None, cwd=None, env=None, encoding=None, + codec_errors='strict', preexec_fn=None): + super(PopenSpawn, self).__init__(timeout=timeout, maxread=maxread, + searchwindowsize=searchwindowsize, logfile=logfile, + encoding=encoding, codec_errors=codec_errors) + + # Note that `SpawnBase` initializes `self.crlf` to `\r\n` + # because the default behaviour for a PTY is to convert + # incoming LF to `\r\n` (see the `onlcr` flag and + # https://stackoverflow.com/a/35887657/5397009). Here we set + # it to `os.linesep` because that is what the spawned + # application outputs by default and `popen` doesn't translate + # anything. + if encoding is None: + self.crlf = os.linesep.encode ("ascii") + else: + self.crlf = self.string_type (os.linesep) + + kwargs = dict(bufsize=0, stdin=subprocess.PIPE, + stderr=subprocess.STDOUT, stdout=subprocess.PIPE, + cwd=cwd, preexec_fn=preexec_fn, env=env) + + if sys.platform == 'win32': + startupinfo = subprocess.STARTUPINFO() + startupinfo.dwFlags |= subprocess.STARTF_USESHOWWINDOW + kwargs['startupinfo'] = startupinfo + kwargs['creationflags'] = subprocess.CREATE_NEW_PROCESS_GROUP + + if isinstance(cmd, string_types) and sys.platform != 'win32': + cmd = shlex.split(cmd, posix=os.name == 'posix') + + self.proc = subprocess.Popen(cmd, **kwargs) + self.pid = self.proc.pid + self.closed = False + self._buf = self.string_type() + + self._read_queue = Queue() + self._read_thread = threading.Thread(target=self._read_incoming) + self._read_thread.setDaemon(True) + self._read_thread.start() + + _read_reached_eof = False + + def read_nonblocking(self, size, timeout): + buf = self._buf + if self._read_reached_eof: + # We have already finished reading. Use up any buffered data, + # then raise EOF + if buf: + self._buf = buf[size:] + return buf[:size] + else: + self.flag_eof = True + raise EOF('End Of File (EOF).') + + if timeout == -1: + timeout = self.timeout + elif timeout is None: + timeout = 1e6 + + t0 = time.time() + while (time.time() - t0) < timeout and size and len(buf) < size: + try: + incoming = self._read_queue.get_nowait() + except Empty: + break + else: + if incoming is None: + self._read_reached_eof = True + break + + buf += self._decoder.decode(incoming, final=False) + + r, self._buf = buf[:size], buf[size:] + + self._log(r, 'read') + return r + + def _read_incoming(self): + """Run in a thread to move output from a pipe to a queue.""" + fileno = self.proc.stdout.fileno() + while 1: + buf = b'' + try: + buf = os.read(fileno, 1024) + except OSError as e: + self._log(e, 'read') + + if not buf: + # This indicates we have reached EOF + self._read_queue.put(None) + return + + self._read_queue.put(buf) + + def write(self, s): + '''This is similar to send() except that there is no return value. + ''' + self.send(s) + + def writelines(self, sequence): + '''This calls write() for each element in the sequence. + + The sequence can be any iterable object producing strings, typically a + list of strings. This does not add line separators. There is no return + value. + ''' + for s in sequence: + self.send(s) + + def send(self, s): + '''Send data to the subprocess' stdin. + + Returns the number of bytes written. + ''' + s = self._coerce_send_string(s) + self._log(s, 'send') + + b = self._encoder.encode(s, final=False) + if PY3: + return self.proc.stdin.write(b) + else: + # On Python 2, .write() returns None, so we return the length of + # bytes written ourselves. This assumes they all got written. + self.proc.stdin.write(b) + return len(b) + + def sendline(self, s=''): + '''Wraps send(), sending string ``s`` to child process, with os.linesep + automatically appended. Returns number of bytes written. ''' + + n = self.send(s) + return n + self.send(self.linesep) + + def wait(self): + '''Wait for the subprocess to finish. + + Returns the exit code. + ''' + status = self.proc.wait() + if status >= 0: + self.exitstatus = status + self.signalstatus = None + else: + self.exitstatus = None + self.signalstatus = -status + self.terminated = True + return status + + def kill(self, sig): + '''Sends a Unix signal to the subprocess. + + Use constants from the :mod:`signal` module to specify which signal. + ''' + if sys.platform == 'win32': + if sig in [signal.SIGINT, signal.CTRL_C_EVENT]: + sig = signal.CTRL_C_EVENT + elif sig in [signal.SIGBREAK, signal.CTRL_BREAK_EVENT]: + sig = signal.CTRL_BREAK_EVENT + else: + sig = signal.SIGTERM + + os.kill(self.proc.pid, sig) + + def sendeof(self): + '''Closes the stdin pipe from the writing end.''' + self.proc.stdin.close() diff --git a/contrib/python/pexpect/py3/pexpect/pty_spawn.py b/contrib/python/pexpect/py3/pexpect/pty_spawn.py new file mode 100644 index 0000000000..8e28ca7cd7 --- /dev/null +++ b/contrib/python/pexpect/py3/pexpect/pty_spawn.py @@ -0,0 +1,860 @@ +import os +import sys +import time +import pty +import tty +import errno +import signal +from contextlib import contextmanager + +import ptyprocess +from ptyprocess.ptyprocess import use_native_pty_fork + +from .exceptions import ExceptionPexpect, EOF, TIMEOUT +from .spawnbase import SpawnBase +from .utils import ( + which, split_command_line, select_ignore_interrupts, poll_ignore_interrupts +) + +@contextmanager +def _wrap_ptyprocess_err(): + """Turn ptyprocess errors into our own ExceptionPexpect errors""" + try: + yield + except ptyprocess.PtyProcessError as e: + raise ExceptionPexpect(*e.args) + +PY3 = (sys.version_info[0] >= 3) + +class spawn(SpawnBase): + '''This is the main class interface for Pexpect. Use this class to start + and control child applications. ''' + + # This is purely informational now - changing it has no effect + use_native_pty_fork = use_native_pty_fork + + def __init__(self, command, args=[], timeout=30, maxread=2000, + searchwindowsize=None, logfile=None, cwd=None, env=None, + ignore_sighup=False, echo=True, preexec_fn=None, + encoding=None, codec_errors='strict', dimensions=None, + use_poll=False): + '''This is the constructor. The command parameter may be a string that + includes a command and any arguments to the command. For example:: + + child = pexpect.spawn('/usr/bin/ftp') + child = pexpect.spawn('/usr/bin/ssh user@example.com') + child = pexpect.spawn('ls -latr /tmp') + + You may also construct it with a list of arguments like so:: + + child = pexpect.spawn('/usr/bin/ftp', []) + child = pexpect.spawn('/usr/bin/ssh', ['user@example.com']) + child = pexpect.spawn('ls', ['-latr', '/tmp']) + + After this the child application will be created and will be ready to + talk to. For normal use, see expect() and send() and sendline(). + + Remember that Pexpect does NOT interpret shell meta characters such as + redirect, pipe, or wild cards (``>``, ``|``, or ``*``). This is a + common mistake. If you want to run a command and pipe it through + another command then you must also start a shell. For example:: + + child = pexpect.spawn('/bin/bash -c "ls -l | grep LOG > logs.txt"') + child.expect(pexpect.EOF) + + The second form of spawn (where you pass a list of arguments) is useful + in situations where you wish to spawn a command and pass it its own + argument list. This can make syntax more clear. For example, the + following is equivalent to the previous example:: + + shell_cmd = 'ls -l | grep LOG > logs.txt' + child = pexpect.spawn('/bin/bash', ['-c', shell_cmd]) + child.expect(pexpect.EOF) + + The maxread attribute sets the read buffer size. This is maximum number + of bytes that Pexpect will try to read from a TTY at one time. Setting + the maxread size to 1 will turn off buffering. Setting the maxread + value higher may help performance in cases where large amounts of + output are read back from the child. This feature is useful in + conjunction with searchwindowsize. + + When the keyword argument *searchwindowsize* is None (default), the + full buffer is searched at each iteration of receiving incoming data. + The default number of bytes scanned at each iteration is very large + and may be reduced to collaterally reduce search cost. After + :meth:`~.expect` returns, the full buffer attribute remains up to + size *maxread* irrespective of *searchwindowsize* value. + + When the keyword argument ``timeout`` is specified as a number, + (default: *30*), then :class:`TIMEOUT` will be raised after the value + specified has elapsed, in seconds, for any of the :meth:`~.expect` + family of method calls. When None, TIMEOUT will not be raised, and + :meth:`~.expect` may block indefinitely until match. + + + The logfile member turns on or off logging. All input and output will + be copied to the given file object. Set logfile to None to stop + logging. This is the default. Set logfile to sys.stdout to echo + everything to standard output. The logfile is flushed after each write. + + Example log input and output to a file:: + + child = pexpect.spawn('some_command') + fout = open('mylog.txt','wb') + child.logfile = fout + + Example log to stdout:: + + # In Python 2: + child = pexpect.spawn('some_command') + child.logfile = sys.stdout + + # In Python 3, we'll use the ``encoding`` argument to decode data + # from the subprocess and handle it as unicode: + child = pexpect.spawn('some_command', encoding='utf-8') + child.logfile = sys.stdout + + The logfile_read and logfile_send members can be used to separately log + the input from the child and output sent to the child. Sometimes you + don't want to see everything you write to the child. You only want to + log what the child sends back. For example:: + + child = pexpect.spawn('some_command') + child.logfile_read = sys.stdout + + You will need to pass an encoding to spawn in the above code if you are + using Python 3. + + To separately log output sent to the child use logfile_send:: + + child.logfile_send = fout + + If ``ignore_sighup`` is True, the child process will ignore SIGHUP + signals. The default is False from Pexpect 4.0, meaning that SIGHUP + will be handled normally by the child. + + The delaybeforesend helps overcome a weird behavior that many users + were experiencing. The typical problem was that a user would expect() a + "Password:" prompt and then immediately call sendline() to send the + password. The user would then see that their password was echoed back + to them. Passwords don't normally echo. The problem is caused by the + fact that most applications print out the "Password" prompt and then + turn off stdin echo, but if you send your password before the + application turned off echo, then you get your password echoed. + Normally this wouldn't be a problem when interacting with a human at a + real keyboard. If you introduce a slight delay just before writing then + this seems to clear up the problem. This was such a common problem for + many users that I decided that the default pexpect behavior should be + to sleep just before writing to the child application. 1/20th of a + second (50 ms) seems to be enough to clear up the problem. You can set + delaybeforesend to None to return to the old behavior. + + Note that spawn is clever about finding commands on your path. + It uses the same logic that "which" uses to find executables. + + If you wish to get the exit status of the child you must call the + close() method. The exit or signal status of the child will be stored + in self.exitstatus or self.signalstatus. If the child exited normally + then exitstatus will store the exit return code and signalstatus will + be None. If the child was terminated abnormally with a signal then + signalstatus will store the signal value and exitstatus will be None:: + + child = pexpect.spawn('some_command') + child.close() + print(child.exitstatus, child.signalstatus) + + If you need more detail you can also read the self.status member which + stores the status returned by os.waitpid. You can interpret this using + os.WIFEXITED/os.WEXITSTATUS or os.WIFSIGNALED/os.TERMSIG. + + The echo attribute may be set to False to disable echoing of input. + As a pseudo-terminal, all input echoed by the "keyboard" (send() + or sendline()) will be repeated to output. For many cases, it is + not desirable to have echo enabled, and it may be later disabled + using setecho(False) followed by waitnoecho(). However, for some + platforms such as Solaris, this is not possible, and should be + disabled immediately on spawn. + + If preexec_fn is given, it will be called in the child process before + launching the given command. This is useful to e.g. reset inherited + signal handlers. + + The dimensions attribute specifies the size of the pseudo-terminal as + seen by the subprocess, and is specified as a two-entry tuple (rows, + columns). If this is unspecified, the defaults in ptyprocess will apply. + + The use_poll attribute enables using select.poll() over select.select() + for socket handling. This is handy if your system could have > 1024 fds + ''' + super(spawn, self).__init__(timeout=timeout, maxread=maxread, searchwindowsize=searchwindowsize, + logfile=logfile, encoding=encoding, codec_errors=codec_errors) + self.STDIN_FILENO = pty.STDIN_FILENO + self.STDOUT_FILENO = pty.STDOUT_FILENO + self.STDERR_FILENO = pty.STDERR_FILENO + self.str_last_chars = 100 + self.cwd = cwd + self.env = env + self.echo = echo + self.ignore_sighup = ignore_sighup + self.__irix_hack = sys.platform.lower().startswith('irix') + if command is None: + self.command = None + self.args = None + self.name = '<pexpect factory incomplete>' + else: + self._spawn(command, args, preexec_fn, dimensions) + self.use_poll = use_poll + + def __str__(self): + '''This returns a human-readable string that represents the state of + the object. ''' + + s = [] + s.append(repr(self)) + s.append('command: ' + str(self.command)) + s.append('args: %r' % (self.args,)) + s.append('buffer (last %s chars): %r' % (self.str_last_chars,self.buffer[-self.str_last_chars:])) + s.append('before (last %s chars): %r' % (self.str_last_chars,self.before[-self.str_last_chars:] if self.before else '')) + s.append('after: %r' % (self.after,)) + s.append('match: %r' % (self.match,)) + s.append('match_index: ' + str(self.match_index)) + s.append('exitstatus: ' + str(self.exitstatus)) + if hasattr(self, 'ptyproc'): + s.append('flag_eof: ' + str(self.flag_eof)) + s.append('pid: ' + str(self.pid)) + s.append('child_fd: ' + str(self.child_fd)) + s.append('closed: ' + str(self.closed)) + s.append('timeout: ' + str(self.timeout)) + s.append('delimiter: ' + str(self.delimiter)) + s.append('logfile: ' + str(self.logfile)) + s.append('logfile_read: ' + str(self.logfile_read)) + s.append('logfile_send: ' + str(self.logfile_send)) + s.append('maxread: ' + str(self.maxread)) + s.append('ignorecase: ' + str(self.ignorecase)) + s.append('searchwindowsize: ' + str(self.searchwindowsize)) + s.append('delaybeforesend: ' + str(self.delaybeforesend)) + s.append('delayafterclose: ' + str(self.delayafterclose)) + s.append('delayafterterminate: ' + str(self.delayafterterminate)) + return '\n'.join(s) + + def _spawn(self, command, args=[], preexec_fn=None, dimensions=None): + '''This starts the given command in a child process. This does all the + fork/exec type of stuff for a pty. This is called by __init__. If args + is empty then command will be parsed (split on spaces) and args will be + set to parsed arguments. ''' + + # The pid and child_fd of this object get set by this method. + # Note that it is difficult for this method to fail. + # You cannot detect if the child process cannot start. + # So the only way you can tell if the child process started + # or not is to try to read from the file descriptor. If you get + # EOF immediately then it means that the child is already dead. + # That may not necessarily be bad because you may have spawned a child + # that performs some task; creates no stdout output; and then dies. + + # If command is an int type then it may represent a file descriptor. + if isinstance(command, type(0)): + raise ExceptionPexpect('Command is an int type. ' + + 'If this is a file descriptor then maybe you want to ' + + 'use fdpexpect.fdspawn which takes an existing ' + + 'file descriptor instead of a command string.') + + if not isinstance(args, type([])): + raise TypeError('The argument, args, must be a list.') + + if args == []: + self.args = split_command_line(command) + self.command = self.args[0] + else: + # Make a shallow copy of the args list. + self.args = args[:] + self.args.insert(0, command) + self.command = command + + command_with_path = which(self.command, env=self.env) + if command_with_path is None: + raise ExceptionPexpect('The command was not found or was not ' + + 'executable: %s.' % self.command) + self.command = command_with_path + self.args[0] = self.command + + self.name = '<' + ' '.join(self.args) + '>' + + assert self.pid is None, 'The pid member must be None.' + assert self.command is not None, 'The command member must not be None.' + + kwargs = {'echo': self.echo, 'preexec_fn': preexec_fn} + if self.ignore_sighup: + def preexec_wrapper(): + "Set SIGHUP to be ignored, then call the real preexec_fn" + signal.signal(signal.SIGHUP, signal.SIG_IGN) + if preexec_fn is not None: + preexec_fn() + kwargs['preexec_fn'] = preexec_wrapper + + if dimensions is not None: + kwargs['dimensions'] = dimensions + + if self.encoding is not None: + # Encode command line using the specified encoding + self.args = [a if isinstance(a, bytes) else a.encode(self.encoding) + for a in self.args] + + self.ptyproc = self._spawnpty(self.args, env=self.env, + cwd=self.cwd, **kwargs) + + self.pid = self.ptyproc.pid + self.child_fd = self.ptyproc.fd + + + self.terminated = False + self.closed = False + + def _spawnpty(self, args, **kwargs): + '''Spawn a pty and return an instance of PtyProcess.''' + return ptyprocess.PtyProcess.spawn(args, **kwargs) + + def close(self, force=True): + '''This closes the connection with the child application. Note that + calling close() more than once is valid. This emulates standard Python + behavior with files. Set force to True if you want to make sure that + the child is terminated (SIGKILL is sent if the child ignores SIGHUP + and SIGINT). ''' + + self.flush() + with _wrap_ptyprocess_err(): + # PtyProcessError may be raised if it is not possible to terminate + # the child. + self.ptyproc.close(force=force) + self.isalive() # Update exit status from ptyproc + self.child_fd = -1 + self.closed = True + + def isatty(self): + '''This returns True if the file descriptor is open and connected to a + tty(-like) device, else False. + + On SVR4-style platforms implementing streams, such as SunOS and HP-UX, + the child pty may not appear as a terminal device. This means + methods such as setecho(), setwinsize(), getwinsize() may raise an + IOError. ''' + + return os.isatty(self.child_fd) + + def waitnoecho(self, timeout=-1): + '''This waits until the terminal ECHO flag is set False. This returns + True if the echo mode is off. This returns False if the ECHO flag was + not set False before the timeout. This can be used to detect when the + child is waiting for a password. Usually a child application will turn + off echo mode when it is waiting for the user to enter a password. For + example, instead of expecting the "password:" prompt you can wait for + the child to set ECHO off:: + + p = pexpect.spawn('ssh user@example.com') + p.waitnoecho() + p.sendline(mypassword) + + If timeout==-1 then this method will use the value in self.timeout. + If timeout==None then this method to block until ECHO flag is False. + ''' + + if timeout == -1: + timeout = self.timeout + if timeout is not None: + end_time = time.time() + timeout + while True: + if not self.getecho(): + return True + if timeout < 0 and timeout is not None: + return False + if timeout is not None: + timeout = end_time - time.time() + time.sleep(0.1) + + def getecho(self): + '''This returns the terminal echo mode. This returns True if echo is + on or False if echo is off. Child applications that are expecting you + to enter a password often set ECHO False. See waitnoecho(). + + Not supported on platforms where ``isatty()`` returns False. ''' + return self.ptyproc.getecho() + + def setecho(self, state): + '''This sets the terminal echo mode on or off. Note that anything the + child sent before the echo will be lost, so you should be sure that + your input buffer is empty before you call setecho(). For example, the + following will work as expected:: + + p = pexpect.spawn('cat') # Echo is on by default. + p.sendline('1234') # We expect see this twice from the child... + p.expect(['1234']) # ... once from the tty echo... + p.expect(['1234']) # ... and again from cat itself. + p.setecho(False) # Turn off tty echo + p.sendline('abcd') # We will set this only once (echoed by cat). + p.sendline('wxyz') # We will set this only once (echoed by cat) + p.expect(['abcd']) + p.expect(['wxyz']) + + The following WILL NOT WORK because the lines sent before the setecho + will be lost:: + + p = pexpect.spawn('cat') + p.sendline('1234') + p.setecho(False) # Turn off tty echo + p.sendline('abcd') # We will set this only once (echoed by cat). + p.sendline('wxyz') # We will set this only once (echoed by cat) + p.expect(['1234']) + p.expect(['1234']) + p.expect(['abcd']) + p.expect(['wxyz']) + + + Not supported on platforms where ``isatty()`` returns False. + ''' + return self.ptyproc.setecho(state) + + def read_nonblocking(self, size=1, timeout=-1): + '''This reads at most size characters from the child application. It + includes a timeout. If the read does not complete within the timeout + period then a TIMEOUT exception is raised. If the end of file is read + then an EOF exception will be raised. If a logfile is specified, a + copy is written to that log. + + If timeout is None then the read may block indefinitely. + If timeout is -1 then the self.timeout value is used. If timeout is 0 + then the child is polled and if there is no data immediately ready + then this will raise a TIMEOUT exception. + + The timeout refers only to the amount of time to read at least one + character. This is not affected by the 'size' parameter, so if you call + read_nonblocking(size=100, timeout=30) and only one character is + available right away then one character will be returned immediately. + It will not wait for 30 seconds for another 99 characters to come in. + + On the other hand, if there are bytes available to read immediately, + all those bytes will be read (up to the buffer size). So, if the + buffer size is 1 megabyte and there is 1 megabyte of data available + to read, the buffer will be filled, regardless of timeout. + + This is a wrapper around os.read(). It uses select.select() or + select.poll() to implement the timeout. ''' + + if self.closed: + raise ValueError('I/O operation on closed file.') + + if self.use_poll: + def select(timeout): + return poll_ignore_interrupts([self.child_fd], timeout) + else: + def select(timeout): + return select_ignore_interrupts([self.child_fd], [], [], timeout)[0] + + # If there is data available to read right now, read as much as + # we can. We do this to increase performance if there are a lot + # of bytes to be read. This also avoids calling isalive() too + # often. See also: + # * https://github.com/pexpect/pexpect/pull/304 + # * http://trac.sagemath.org/ticket/10295 + if select(0): + try: + incoming = super(spawn, self).read_nonblocking(size) + except EOF: + # Maybe the child is dead: update some attributes in that case + self.isalive() + raise + while len(incoming) < size and select(0): + try: + incoming += super(spawn, self).read_nonblocking(size - len(incoming)) + except EOF: + # Maybe the child is dead: update some attributes in that case + self.isalive() + # Don't raise EOF, just return what we read so far. + return incoming + return incoming + + if timeout == -1: + timeout = self.timeout + + if not self.isalive(): + # The process is dead, but there may or may not be data + # available to read. Note that some systems such as Solaris + # do not give an EOF when the child dies. In fact, you can + # still try to read from the child_fd -- it will block + # forever or until TIMEOUT. For that reason, it's important + # to do this check before calling select() with timeout. + if select(0): + return super(spawn, self).read_nonblocking(size) + self.flag_eof = True + raise EOF('End Of File (EOF). Braindead platform.') + elif self.__irix_hack: + # Irix takes a long time before it realizes a child was terminated. + # Make sure that the timeout is at least 2 seconds. + # FIXME So does this mean Irix systems are forced to always have + # FIXME a 2 second delay when calling read_nonblocking? That sucks. + if timeout is not None and timeout < 2: + timeout = 2 + + # Because of the select(0) check above, we know that no data + # is available right now. But if a non-zero timeout is given + # (possibly timeout=None), we call select() with a timeout. + if (timeout != 0) and select(timeout): + return super(spawn, self).read_nonblocking(size) + + if not self.isalive(): + # Some platforms, such as Irix, will claim that their + # processes are alive; timeout on the select; and + # then finally admit that they are not alive. + self.flag_eof = True + raise EOF('End of File (EOF). Very slow platform.') + else: + raise TIMEOUT('Timeout exceeded.') + + def write(self, s): + '''This is similar to send() except that there is no return value. + ''' + + self.send(s) + + def writelines(self, sequence): + '''This calls write() for each element in the sequence. The sequence + can be any iterable object producing strings, typically a list of + strings. This does not add line separators. There is no return value. + ''' + + for s in sequence: + self.write(s) + + def send(self, s): + '''Sends string ``s`` to the child process, returning the number of + bytes written. If a logfile is specified, a copy is written to that + log. + + The default terminal input mode is canonical processing unless set + otherwise by the child process. This allows backspace and other line + processing to be performed prior to transmitting to the receiving + program. As this is buffered, there is a limited size of such buffer. + + On Linux systems, this is 4096 (defined by N_TTY_BUF_SIZE). All + other systems honor the POSIX.1 definition PC_MAX_CANON -- 1024 + on OSX, 256 on OpenSolaris, and 1920 on FreeBSD. + + This value may be discovered using fpathconf(3):: + + >>> from os import fpathconf + >>> print(fpathconf(0, 'PC_MAX_CANON')) + 256 + + On such a system, only 256 bytes may be received per line. Any + subsequent bytes received will be discarded. BEL (``'\a'``) is then + sent to output if IMAXBEL (termios.h) is set by the tty driver. + This is usually enabled by default. Linux does not honor this as + an option -- it behaves as though it is always set on. + + Canonical input processing may be disabled altogether by executing + a shell, then stty(1), before executing the final program:: + + >>> bash = pexpect.spawn('/bin/bash', echo=False) + >>> bash.sendline('stty -icanon') + >>> bash.sendline('base64') + >>> bash.sendline('x' * 5000) + ''' + + if self.delaybeforesend is not None: + time.sleep(self.delaybeforesend) + + s = self._coerce_send_string(s) + self._log(s, 'send') + + b = self._encoder.encode(s, final=False) + return os.write(self.child_fd, b) + + def sendline(self, s=''): + '''Wraps send(), sending string ``s`` to child process, with + ``os.linesep`` automatically appended. Returns number of bytes + written. Only a limited number of bytes may be sent for each + line in the default terminal mode, see docstring of :meth:`send`. + ''' + s = self._coerce_send_string(s) + return self.send(s + self.linesep) + + def _log_control(self, s): + """Write control characters to the appropriate log files""" + if self.encoding is not None: + s = s.decode(self.encoding, 'replace') + self._log(s, 'send') + + def sendcontrol(self, char): + '''Helper method that wraps send() with mnemonic access for sending control + character to the child (such as Ctrl-C or Ctrl-D). For example, to send + Ctrl-G (ASCII 7, bell, '\a'):: + + child.sendcontrol('g') + + See also, sendintr() and sendeof(). + ''' + n, byte = self.ptyproc.sendcontrol(char) + self._log_control(byte) + return n + + def sendeof(self): + '''This sends an EOF to the child. This sends a character which causes + the pending parent output buffer to be sent to the waiting child + program without waiting for end-of-line. If it is the first character + of the line, the read() in the user program returns 0, which signifies + end-of-file. This means to work as expected a sendeof() has to be + called at the beginning of a line. This method does not send a newline. + It is the responsibility of the caller to ensure the eof is sent at the + beginning of a line. ''' + + n, byte = self.ptyproc.sendeof() + self._log_control(byte) + + def sendintr(self): + '''This sends a SIGINT to the child. It does not require + the SIGINT to be the first character on a line. ''' + + n, byte = self.ptyproc.sendintr() + self._log_control(byte) + + @property + def flag_eof(self): + return self.ptyproc.flag_eof + + @flag_eof.setter + def flag_eof(self, value): + self.ptyproc.flag_eof = value + + def eof(self): + '''This returns True if the EOF exception was ever raised. + ''' + return self.flag_eof + + def terminate(self, force=False): + '''This forces a child process to terminate. It starts nicely with + SIGHUP and SIGINT. If "force" is True then moves onto SIGKILL. This + returns True if the child was terminated. This returns False if the + child could not be terminated. ''' + + if not self.isalive(): + return True + try: + self.kill(signal.SIGHUP) + time.sleep(self.delayafterterminate) + if not self.isalive(): + return True + self.kill(signal.SIGCONT) + time.sleep(self.delayafterterminate) + if not self.isalive(): + return True + self.kill(signal.SIGINT) + time.sleep(self.delayafterterminate) + if not self.isalive(): + return True + if force: + self.kill(signal.SIGKILL) + time.sleep(self.delayafterterminate) + if not self.isalive(): + return True + else: + return False + return False + except OSError: + # I think there are kernel timing issues that sometimes cause + # this to happen. I think isalive() reports True, but the + # process is dead to the kernel. + # Make one last attempt to see if the kernel is up to date. + time.sleep(self.delayafterterminate) + if not self.isalive(): + return True + else: + return False + + def wait(self): + '''This waits until the child exits. This is a blocking call. This will + not read any data from the child, so this will block forever if the + child has unread output and has terminated. In other words, the child + may have printed output then called exit(), but, the child is + technically still alive until its output is read by the parent. + + This method is non-blocking if :meth:`wait` has already been called + previously or :meth:`isalive` method returns False. It simply returns + the previously determined exit status. + ''' + + ptyproc = self.ptyproc + with _wrap_ptyprocess_err(): + # exception may occur if "Is some other process attempting + # "job control with our child pid?" + exitstatus = ptyproc.wait() + self.status = ptyproc.status + self.exitstatus = ptyproc.exitstatus + self.signalstatus = ptyproc.signalstatus + self.terminated = True + + return exitstatus + + def isalive(self): + '''This tests if the child process is running or not. This is + non-blocking. If the child was terminated then this will read the + exitstatus or signalstatus of the child. This returns True if the child + process appears to be running or False if not. It can take literally + SECONDS for Solaris to return the right status. ''' + + ptyproc = self.ptyproc + with _wrap_ptyprocess_err(): + alive = ptyproc.isalive() + + if not alive: + self.status = ptyproc.status + self.exitstatus = ptyproc.exitstatus + self.signalstatus = ptyproc.signalstatus + self.terminated = True + + return alive + + def kill(self, sig): + + '''This sends the given signal to the child application. In keeping + with UNIX tradition it has a misleading name. It does not necessarily + kill the child unless you send the right signal. ''' + + # Same as os.kill, but the pid is given for you. + if self.isalive(): + os.kill(self.pid, sig) + + def getwinsize(self): + '''This returns the terminal window size of the child tty. The return + value is a tuple of (rows, cols). ''' + return self.ptyproc.getwinsize() + + def setwinsize(self, rows, cols): + '''This sets the terminal window size of the child tty. This will cause + a SIGWINCH signal to be sent to the child. This does not change the + physical window size. It changes the size reported to TTY-aware + applications like vi or curses -- applications that respond to the + SIGWINCH signal. ''' + return self.ptyproc.setwinsize(rows, cols) + + + def interact(self, escape_character=chr(29), + input_filter=None, output_filter=None): + + '''This gives control of the child process to the interactive user (the + human at the keyboard). Keystrokes are sent to the child process, and + the stdout and stderr output of the child process is printed. This + simply echos the child stdout and child stderr to the real stdout and + it echos the real stdin to the child stdin. When the user types the + escape_character this method will return None. The escape_character + will not be transmitted. The default for escape_character is + entered as ``Ctrl - ]``, the very same as BSD telnet. To prevent + escaping, escape_character may be set to None. + + If a logfile is specified, then the data sent and received from the + child process in interact mode is duplicated to the given log. + + You may pass in optional input and output filter functions. These + functions should take bytes array and return bytes array too. Even + with ``encoding='utf-8'`` support, meth:`interact` will always pass + input_filter and output_filter bytes. You may need to wrap your + function to decode and encode back to UTF-8. + + The output_filter will be passed all the output from the child process. + The input_filter will be passed all the keyboard input from the user. + The input_filter is run BEFORE the check for the escape_character. + + Note that if you change the window size of the parent the SIGWINCH + signal will not be passed through to the child. If you want the child + window size to change when the parent's window size changes then do + something like the following example:: + + import pexpect, struct, fcntl, termios, signal, sys + def sigwinch_passthrough (sig, data): + s = struct.pack("HHHH", 0, 0, 0, 0) + a = struct.unpack('hhhh', fcntl.ioctl(sys.stdout.fileno(), + termios.TIOCGWINSZ , s)) + if not p.closed: + p.setwinsize(a[0],a[1]) + + # Note this 'p' is global and used in sigwinch_passthrough. + p = pexpect.spawn('/bin/bash') + signal.signal(signal.SIGWINCH, sigwinch_passthrough) + p.interact() + ''' + + # Flush the buffer. + self.write_to_stdout(self.buffer) + self.stdout.flush() + self._buffer = self.buffer_type() + mode = tty.tcgetattr(self.STDIN_FILENO) + tty.setraw(self.STDIN_FILENO) + if escape_character is not None and PY3: + escape_character = escape_character.encode('latin-1') + try: + self.__interact_copy(escape_character, input_filter, output_filter) + finally: + tty.tcsetattr(self.STDIN_FILENO, tty.TCSAFLUSH, mode) + + def __interact_writen(self, fd, data): + '''This is used by the interact() method. + ''' + + while data != b'' and self.isalive(): + n = os.write(fd, data) + data = data[n:] + + def __interact_read(self, fd): + '''This is used by the interact() method. + ''' + + return os.read(fd, 1000) + + def __interact_copy( + self, escape_character=None, input_filter=None, output_filter=None + ): + + '''This is used by the interact() method. + ''' + + while self.isalive(): + if self.use_poll: + r = poll_ignore_interrupts([self.child_fd, self.STDIN_FILENO]) + else: + r, w, e = select_ignore_interrupts( + [self.child_fd, self.STDIN_FILENO], [], [] + ) + if self.child_fd in r: + try: + data = self.__interact_read(self.child_fd) + except OSError as err: + if err.args[0] == errno.EIO: + # Linux-style EOF + break + raise + if data == b'': + # BSD-style EOF + break + if output_filter: + data = output_filter(data) + self._log(data, 'read') + os.write(self.STDOUT_FILENO, data) + if self.STDIN_FILENO in r: + data = self.__interact_read(self.STDIN_FILENO) + if input_filter: + data = input_filter(data) + i = -1 + if escape_character is not None: + i = data.rfind(escape_character) + if i != -1: + data = data[:i] + if data: + self._log(data, 'send') + self.__interact_writen(self.child_fd, data) + break + self._log(data, 'send') + self.__interact_writen(self.child_fd, data) + + +def spawnu(*args, **kwargs): + """Deprecated: pass encoding to spawn() instead.""" + kwargs.setdefault('encoding', 'utf-8') + return spawn(*args, **kwargs) diff --git a/contrib/python/pexpect/py3/pexpect/pxssh.py b/contrib/python/pexpect/py3/pexpect/pxssh.py new file mode 100644 index 0000000000..3d53bd9746 --- /dev/null +++ b/contrib/python/pexpect/py3/pexpect/pxssh.py @@ -0,0 +1,537 @@ +'''This class extends pexpect.spawn to specialize setting up SSH connections. +This adds methods for login, logout, and expecting the shell prompt. + +PEXPECT LICENSE + + This license is approved by the OSI and FSF as GPL-compatible. + http://opensource.org/licenses/isc-license.txt + + Copyright (c) 2012, Noah Spurrier <noah@noah.org> + PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY + PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE + COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES. + THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + +''' + +from pexpect import ExceptionPexpect, TIMEOUT, EOF, spawn +import time +import os +import sys +import re + +__all__ = ['ExceptionPxssh', 'pxssh'] + +# Exception classes used by this module. +class ExceptionPxssh(ExceptionPexpect): + '''Raised for pxssh exceptions. + ''' + +if sys.version_info > (3, 0): + from shlex import quote +else: + _find_unsafe = re.compile(r'[^\w@%+=:,./-]').search + + def quote(s): + """Return a shell-escaped version of the string *s*.""" + if not s: + return "''" + if _find_unsafe(s) is None: + return s + + # use single quotes, and put single quotes into double quotes + # the string $'b is then quoted as '$'"'"'b' + return "'" + s.replace("'", "'\"'\"'") + "'" + +class pxssh (spawn): + '''This class extends pexpect.spawn to specialize setting up SSH + connections. This adds methods for login, logout, and expecting the shell + prompt. It does various tricky things to handle many situations in the SSH + login process. For example, if the session is your first login, then pxssh + automatically accepts the remote certificate; or if you have public key + authentication setup then pxssh won't wait for the password prompt. + + pxssh uses the shell prompt to synchronize output from the remote host. In + order to make this more robust it sets the shell prompt to something more + unique than just $ or #. This should work on most Borne/Bash or Csh style + shells. + + Example that runs a few commands on a remote server and prints the result:: + + from pexpect import pxssh + import getpass + try: + s = pxssh.pxssh() + hostname = raw_input('hostname: ') + username = raw_input('username: ') + password = getpass.getpass('password: ') + s.login(hostname, username, password) + s.sendline('uptime') # run a command + s.prompt() # match the prompt + print(s.before) # print everything before the prompt. + s.sendline('ls -l') + s.prompt() + print(s.before) + s.sendline('df') + s.prompt() + print(s.before) + s.logout() + except pxssh.ExceptionPxssh as e: + print("pxssh failed on login.") + print(e) + + Example showing how to specify SSH options:: + + from pexpect import pxssh + s = pxssh.pxssh(options={ + "StrictHostKeyChecking": "no", + "UserKnownHostsFile": "/dev/null"}) + ... + + Note that if you have ssh-agent running while doing development with pxssh + then this can lead to a lot of confusion. Many X display managers (xdm, + gdm, kdm, etc.) will automatically start a GUI agent. You may see a GUI + dialog box popup asking for a password during development. You should turn + off any key agents during testing. The 'force_password' attribute will turn + off public key authentication. This will only work if the remote SSH server + is configured to allow password logins. Example of using 'force_password' + attribute:: + + s = pxssh.pxssh() + s.force_password = True + hostname = raw_input('hostname: ') + username = raw_input('username: ') + password = getpass.getpass('password: ') + s.login (hostname, username, password) + + `debug_command_string` is only for the test suite to confirm that the string + generated for SSH is correct, using this will not allow you to do + anything other than get a string back from `pxssh.pxssh.login()`. + ''' + + def __init__ (self, timeout=30, maxread=2000, searchwindowsize=None, + logfile=None, cwd=None, env=None, ignore_sighup=True, echo=True, + options={}, encoding=None, codec_errors='strict', + debug_command_string=False, use_poll=False): + + spawn.__init__(self, None, timeout=timeout, maxread=maxread, + searchwindowsize=searchwindowsize, logfile=logfile, + cwd=cwd, env=env, ignore_sighup=ignore_sighup, echo=echo, + encoding=encoding, codec_errors=codec_errors, use_poll=use_poll) + + self.name = '<pxssh>' + + #SUBTLE HACK ALERT! Note that the command that SETS the prompt uses a + #slightly different string than the regular expression to match it. This + #is because when you set the prompt the command will echo back, but we + #don't want to match the echoed command. So if we make the set command + #slightly different than the regex we eliminate the problem. To make the + #set command different we add a backslash in front of $. The $ doesn't + #need to be escaped, but it doesn't hurt and serves to make the set + #prompt command different than the regex. + + # used to match the command-line prompt + self.UNIQUE_PROMPT = r"\[PEXPECT\][\$\#] " + self.PROMPT = self.UNIQUE_PROMPT + + # used to set shell command-line prompt to UNIQUE_PROMPT. + self.PROMPT_SET_SH = r"PS1='[PEXPECT]\$ '" + self.PROMPT_SET_CSH = r"set prompt='[PEXPECT]\$ '" + self.SSH_OPTS = ("-o'RSAAuthentication=no'" + + " -o 'PubkeyAuthentication=no'") +# Disabling host key checking, makes you vulnerable to MITM attacks. +# + " -o 'StrictHostKeyChecking=no'" +# + " -o 'UserKnownHostsFile /dev/null' ") + # Disabling X11 forwarding gets rid of the annoying SSH_ASKPASS from + # displaying a GUI password dialog. I have not figured out how to + # disable only SSH_ASKPASS without also disabling X11 forwarding. + # Unsetting SSH_ASKPASS on the remote side doesn't disable it! Annoying! + #self.SSH_OPTS = "-x -o'RSAAuthentication=no' -o 'PubkeyAuthentication=no'" + self.force_password = False + + self.debug_command_string = debug_command_string + + # User defined SSH options, eg, + # ssh.otions = dict(StrictHostKeyChecking="no",UserKnownHostsFile="/dev/null") + self.options = options + + def levenshtein_distance(self, a, b): + '''This calculates the Levenshtein distance between a and b. + ''' + + n, m = len(a), len(b) + if n > m: + a,b = b,a + n,m = m,n + current = range(n+1) + for i in range(1,m+1): + previous, current = current, [i]+[0]*n + for j in range(1,n+1): + add, delete = previous[j]+1, current[j-1]+1 + change = previous[j-1] + if a[j-1] != b[i-1]: + change = change + 1 + current[j] = min(add, delete, change) + return current[n] + + def try_read_prompt(self, timeout_multiplier): + '''This facilitates using communication timeouts to perform + synchronization as quickly as possible, while supporting high latency + connections with a tunable worst case performance. Fast connections + should be read almost immediately. Worst case performance for this + method is timeout_multiplier * 3 seconds. + ''' + + # maximum time allowed to read the first response + first_char_timeout = timeout_multiplier * 0.5 + + # maximum time allowed between subsequent characters + inter_char_timeout = timeout_multiplier * 0.1 + + # maximum time for reading the entire prompt + total_timeout = timeout_multiplier * 3.0 + + prompt = self.string_type() + begin = time.time() + expired = 0.0 + timeout = first_char_timeout + + while expired < total_timeout: + try: + prompt += self.read_nonblocking(size=1, timeout=timeout) + expired = time.time() - begin # updated total time expired + timeout = inter_char_timeout + except TIMEOUT: + break + + return prompt + + def sync_original_prompt (self, sync_multiplier=1.0): + '''This attempts to find the prompt. Basically, press enter and record + the response; press enter again and record the response; if the two + responses are similar then assume we are at the original prompt. + This can be a slow function. Worst case with the default sync_multiplier + can take 12 seconds. Low latency connections are more likely to fail + with a low sync_multiplier. Best case sync time gets worse with a + high sync multiplier (500 ms with default). ''' + + # All of these timing pace values are magic. + # I came up with these based on what seemed reliable for + # connecting to a heavily loaded machine I have. + self.sendline() + time.sleep(0.1) + + try: + # Clear the buffer before getting the prompt. + self.try_read_prompt(sync_multiplier) + except TIMEOUT: + pass + + self.sendline() + x = self.try_read_prompt(sync_multiplier) + + self.sendline() + a = self.try_read_prompt(sync_multiplier) + + self.sendline() + b = self.try_read_prompt(sync_multiplier) + + ld = self.levenshtein_distance(a,b) + len_a = len(a) + if len_a == 0: + return False + if float(ld)/len_a < 0.4: + return True + return False + + ### TODO: This is getting messy and I'm pretty sure this isn't perfect. + ### TODO: I need to draw a flow chart for this. + ### TODO: Unit tests for SSH tunnels, remote SSH command exec, disabling original prompt sync + def login (self, server, username=None, password='', terminal_type='ansi', + original_prompt=r"[#$]", login_timeout=10, port=None, + auto_prompt_reset=True, ssh_key=None, quiet=True, + sync_multiplier=1, check_local_ip=True, + password_regex=r'(?i)(?:password:)|(?:passphrase for key)', + ssh_tunnels={}, spawn_local_ssh=True, + sync_original_prompt=True, ssh_config=None, cmd='ssh'): + '''This logs the user into the given server. + + It uses 'original_prompt' to try to find the prompt right after login. + When it finds the prompt it immediately tries to reset the prompt to + something more easily matched. The default 'original_prompt' is very + optimistic and is easily fooled. It's more reliable to try to match the original + prompt as exactly as possible to prevent false matches by server + strings such as the "Message Of The Day". On many systems you can + disable the MOTD on the remote server by creating a zero-length file + called :file:`~/.hushlogin` on the remote server. If a prompt cannot be found + then this will not necessarily cause the login to fail. In the case of + a timeout when looking for the prompt we assume that the original + prompt was so weird that we could not match it, so we use a few tricks + to guess when we have reached the prompt. Then we hope for the best and + blindly try to reset the prompt to something more unique. If that fails + then login() raises an :class:`ExceptionPxssh` exception. + + In some situations it is not possible or desirable to reset the + original prompt. In this case, pass ``auto_prompt_reset=False`` to + inhibit setting the prompt to the UNIQUE_PROMPT. Remember that pxssh + uses a unique prompt in the :meth:`prompt` method. If the original prompt is + not reset then this will disable the :meth:`prompt` method unless you + manually set the :attr:`PROMPT` attribute. + + Set ``password_regex`` if there is a MOTD message with `password` in it. + Changing this is like playing in traffic, don't (p)expect it to match straight + away. + + If you require to connect to another SSH server from the your original SSH + connection set ``spawn_local_ssh`` to `False` and this will use your current + session to do so. Setting this option to `False` and not having an active session + will trigger an error. + + Set ``ssh_key`` to a file path to an SSH private key to use that SSH key + for the session authentication. + Set ``ssh_key`` to `True` to force passing the current SSH authentication socket + to the desired ``hostname``. + + Set ``ssh_config`` to a file path string of an SSH client config file to pass that + file to the client to handle itself. You may set any options you wish in here, however + doing so will require you to post extra information that you may not want to if you + run into issues. + + Alter the ``cmd`` to change the ssh client used, or to prepend it with network + namespaces. For example ```cmd="ip netns exec vlan2 ssh"``` to execute the ssh in + network namespace named ```vlan```. + ''' + + session_regex_array = ["(?i)are you sure you want to continue connecting", original_prompt, password_regex, "(?i)permission denied", "(?i)terminal type", TIMEOUT] + session_init_regex_array = [] + session_init_regex_array.extend(session_regex_array) + session_init_regex_array.extend(["(?i)connection closed by remote host", EOF]) + + ssh_options = ''.join([" -o '%s=%s'" % (o, v) for (o, v) in self.options.items()]) + if quiet: + ssh_options = ssh_options + ' -q' + if not check_local_ip: + ssh_options = ssh_options + " -o'NoHostAuthenticationForLocalhost=yes'" + if self.force_password: + ssh_options = ssh_options + ' ' + self.SSH_OPTS + if ssh_config is not None: + if spawn_local_ssh and not os.path.isfile(ssh_config): + raise ExceptionPxssh('SSH config does not exist or is not a file.') + ssh_options = ssh_options + ' -F ' + ssh_config + if port is not None: + ssh_options = ssh_options + ' -p %s'%(str(port)) + if ssh_key is not None: + # Allow forwarding our SSH key to the current session + if ssh_key==True: + ssh_options = ssh_options + ' -A' + else: + if spawn_local_ssh and not os.path.isfile(ssh_key): + raise ExceptionPxssh('private ssh key does not exist or is not a file.') + ssh_options = ssh_options + ' -i %s' % (ssh_key) + + # SSH tunnels, make sure you know what you're putting into the lists + # under each heading. Do not expect these to open 100% of the time, + # The port you're requesting might be bound. + # + # The structure should be like this: + # { 'local': ['2424:localhost:22'], # Local SSH tunnels + # 'remote': ['2525:localhost:22'], # Remote SSH tunnels + # 'dynamic': [8888] } # Dynamic/SOCKS tunnels + if ssh_tunnels!={} and isinstance({},type(ssh_tunnels)): + tunnel_types = { + 'local':'L', + 'remote':'R', + 'dynamic':'D' + } + for tunnel_type in tunnel_types: + cmd_type = tunnel_types[tunnel_type] + if tunnel_type in ssh_tunnels: + tunnels = ssh_tunnels[tunnel_type] + for tunnel in tunnels: + if spawn_local_ssh==False: + tunnel = quote(str(tunnel)) + ssh_options = ssh_options + ' -' + cmd_type + ' ' + str(tunnel) + + if username is not None: + ssh_options = ssh_options + ' -l ' + username + elif ssh_config is None: + raise TypeError('login() needs either a username or an ssh_config') + else: # make sure ssh_config has an entry for the server with a username + with open(ssh_config, 'rt') as f: + lines = [l.strip() for l in f.readlines()] + + server_regex = r'^Host\s+%s\s*$' % server + user_regex = r'^User\s+\w+\s*$' + config_has_server = False + server_has_username = False + for line in lines: + if not config_has_server and re.match(server_regex, line, re.IGNORECASE): + config_has_server = True + elif config_has_server and 'hostname' in line.lower(): + pass + elif config_has_server and 'host' in line.lower(): + server_has_username = False # insurance + break # we have left the relevant section + elif config_has_server and re.match(user_regex, line, re.IGNORECASE): + server_has_username = True + break + + if lines: + del line + + del lines + + if not config_has_server: + raise TypeError('login() ssh_config has no Host entry for %s' % server) + elif not server_has_username: + raise TypeError('login() ssh_config has no user entry for %s' % server) + + cmd += " %s %s" % (ssh_options, server) + if self.debug_command_string: + return(cmd) + + # Are we asking for a local ssh command or to spawn one in another session? + if spawn_local_ssh: + spawn._spawn(self, cmd) + else: + self.sendline(cmd) + + # This does not distinguish between a remote server 'password' prompt + # and a local ssh 'passphrase' prompt (for unlocking a private key). + i = self.expect(session_init_regex_array, timeout=login_timeout) + + # First phase + if i==0: + # New certificate -- always accept it. + # This is what you get if SSH does not have the remote host's + # public key stored in the 'known_hosts' cache. + self.sendline("yes") + i = self.expect(session_regex_array) + if i==2: # password or passphrase + self.sendline(password) + i = self.expect(session_regex_array) + if i==4: + self.sendline(terminal_type) + i = self.expect(session_regex_array) + if i==7: + self.close() + raise ExceptionPxssh('Could not establish connection to host') + + # Second phase + if i==0: + # This is weird. This should not happen twice in a row. + self.close() + raise ExceptionPxssh('Weird error. Got "are you sure" prompt twice.') + elif i==1: # can occur if you have a public key pair set to authenticate. + ### TODO: May NOT be OK if expect() got tricked and matched a false prompt. + pass + elif i==2: # password prompt again + # For incorrect passwords, some ssh servers will + # ask for the password again, others return 'denied' right away. + # If we get the password prompt again then this means + # we didn't get the password right the first time. + self.close() + raise ExceptionPxssh('password refused') + elif i==3: # permission denied -- password was bad. + self.close() + raise ExceptionPxssh('permission denied') + elif i==4: # terminal type again? WTF? + self.close() + raise ExceptionPxssh('Weird error. Got "terminal type" prompt twice.') + elif i==5: # Timeout + #This is tricky... I presume that we are at the command-line prompt. + #It may be that the shell prompt was so weird that we couldn't match + #it. Or it may be that we couldn't log in for some other reason. I + #can't be sure, but it's safe to guess that we did login because if + #I presume wrong and we are not logged in then this should be caught + #later when I try to set the shell prompt. + pass + elif i==6: # Connection closed by remote host + self.close() + raise ExceptionPxssh('connection closed') + else: # Unexpected + self.close() + raise ExceptionPxssh('unexpected login response') + if sync_original_prompt: + if not self.sync_original_prompt(sync_multiplier): + self.close() + raise ExceptionPxssh('could not synchronize with original prompt') + # We appear to be in. + # set shell prompt to something unique. + if auto_prompt_reset: + if not self.set_unique_prompt(): + self.close() + raise ExceptionPxssh('could not set shell prompt ' + '(received: %r, expected: %r).' % ( + self.before, self.PROMPT,)) + return True + + def logout (self): + '''Sends exit to the remote shell. + + If there are stopped jobs then this automatically sends exit twice. + ''' + self.sendline("exit") + index = self.expect([EOF, "(?i)there are stopped jobs"]) + if index==1: + self.sendline("exit") + self.expect(EOF) + self.close() + + def prompt(self, timeout=-1): + '''Match the next shell prompt. + + This is little more than a short-cut to the :meth:`~pexpect.spawn.expect` + method. Note that if you called :meth:`login` with + ``auto_prompt_reset=False``, then before calling :meth:`prompt` you must + set the :attr:`PROMPT` attribute to a regex that it will use for + matching the prompt. + + Calling :meth:`prompt` will erase the contents of the :attr:`before` + attribute even if no prompt is ever matched. If timeout is not given or + it is set to -1 then self.timeout is used. + + :return: True if the shell prompt was matched, False if the timeout was + reached. + ''' + + if timeout == -1: + timeout = self.timeout + i = self.expect([self.PROMPT, TIMEOUT], timeout=timeout) + if i==1: + return False + return True + + def set_unique_prompt(self): + '''This sets the remote prompt to something more unique than ``#`` or ``$``. + This makes it easier for the :meth:`prompt` method to match the shell prompt + unambiguously. This method is called automatically by the :meth:`login` + method, but you may want to call it manually if you somehow reset the + shell prompt. For example, if you 'su' to a different user then you + will need to manually reset the prompt. This sends shell commands to + the remote host to set the prompt, so this assumes the remote host is + ready to receive commands. + + Alternatively, you may use your own prompt pattern. In this case you + should call :meth:`login` with ``auto_prompt_reset=False``; then set the + :attr:`PROMPT` attribute to a regular expression. After that, the + :meth:`prompt` method will try to match your prompt pattern. + ''' + + self.sendline("unset PROMPT_COMMAND") + self.sendline(self.PROMPT_SET_SH) # sh-style + i = self.expect ([TIMEOUT, self.PROMPT], timeout=10) + if i == 0: # csh-style + self.sendline(self.PROMPT_SET_CSH) + i = self.expect([TIMEOUT, self.PROMPT], timeout=10) + if i == 0: + return False + return True + +# vi:ts=4:sw=4:expandtab:ft=python: diff --git a/contrib/python/pexpect/py3/pexpect/replwrap.py b/contrib/python/pexpect/py3/pexpect/replwrap.py new file mode 100644 index 0000000000..c930f1e4fe --- /dev/null +++ b/contrib/python/pexpect/py3/pexpect/replwrap.py @@ -0,0 +1,130 @@ +"""Generic wrapper for read-eval-print-loops, a.k.a. interactive shells +""" +import os.path +import signal +import sys + +import pexpect + +PY3 = (sys.version_info[0] >= 3) + +if PY3: + basestring = str + +PEXPECT_PROMPT = u'[PEXPECT_PROMPT>' +PEXPECT_CONTINUATION_PROMPT = u'[PEXPECT_PROMPT+' + +class REPLWrapper(object): + """Wrapper for a REPL. + + :param cmd_or_spawn: This can either be an instance of :class:`pexpect.spawn` + in which a REPL has already been started, or a str command to start a new + REPL process. + :param str orig_prompt: The prompt to expect at first. + :param str prompt_change: A command to change the prompt to something more + unique. If this is ``None``, the prompt will not be changed. This will + be formatted with the new and continuation prompts as positional + parameters, so you can use ``{}`` style formatting to insert them into + the command. + :param str new_prompt: The more unique prompt to expect after the change. + :param str extra_init_cmd: Commands to do extra initialisation, such as + disabling pagers. + """ + def __init__(self, cmd_or_spawn, orig_prompt, prompt_change, + new_prompt=PEXPECT_PROMPT, + continuation_prompt=PEXPECT_CONTINUATION_PROMPT, + extra_init_cmd=None): + if isinstance(cmd_or_spawn, basestring): + self.child = pexpect.spawn(cmd_or_spawn, echo=False, encoding='utf-8') + else: + self.child = cmd_or_spawn + if self.child.echo: + # Existing spawn instance has echo enabled, disable it + # to prevent our input from being repeated to output. + self.child.setecho(False) + self.child.waitnoecho() + + if prompt_change is None: + self.prompt = orig_prompt + else: + self.set_prompt(orig_prompt, + prompt_change.format(new_prompt, continuation_prompt)) + self.prompt = new_prompt + self.continuation_prompt = continuation_prompt + + self._expect_prompt() + + if extra_init_cmd is not None: + self.run_command(extra_init_cmd) + + def set_prompt(self, orig_prompt, prompt_change): + self.child.expect(orig_prompt) + self.child.sendline(prompt_change) + + def _expect_prompt(self, timeout=-1, async_=False): + return self.child.expect_exact([self.prompt, self.continuation_prompt], + timeout=timeout, async_=async_) + + def run_command(self, command, timeout=-1, async_=False): + """Send a command to the REPL, wait for and return output. + + :param str command: The command to send. Trailing newlines are not needed. + This should be a complete block of input that will trigger execution; + if a continuation prompt is found after sending input, :exc:`ValueError` + will be raised. + :param int timeout: How long to wait for the next prompt. -1 means the + default from the :class:`pexpect.spawn` object (default 30 seconds). + None means to wait indefinitely. + :param bool async_: On Python 3.4, or Python 3.3 with asyncio + installed, passing ``async_=True`` will make this return an + :mod:`asyncio` Future, which you can yield from to get the same + result that this method would normally give directly. + """ + # Split up multiline commands and feed them in bit-by-bit + cmdlines = command.splitlines() + # splitlines ignores trailing newlines - add it back in manually + if command.endswith('\n'): + cmdlines.append('') + if not cmdlines: + raise ValueError("No command was given") + + if async_: + from ._async import repl_run_command_async + return repl_run_command_async(self, cmdlines, timeout) + + res = [] + self.child.sendline(cmdlines[0]) + for line in cmdlines[1:]: + self._expect_prompt(timeout=timeout) + res.append(self.child.before) + self.child.sendline(line) + + # Command was fully submitted, now wait for the next prompt + if self._expect_prompt(timeout=timeout) == 1: + # We got the continuation prompt - command was incomplete + self.child.kill(signal.SIGINT) + self._expect_prompt(timeout=1) + raise ValueError("Continuation prompt found - input was incomplete:\n" + + command) + return u''.join(res + [self.child.before]) + +def python(command="python"): + """Start a Python shell and return a :class:`REPLWrapper` object.""" + return REPLWrapper(command, u">>> ", u"import sys; sys.ps1={0!r}; sys.ps2={1!r}") + +def bash(command="bash"): + """Start a bash shell and return a :class:`REPLWrapper` object.""" + bashrc = os.path.join(os.path.dirname(__file__), 'bashrc.sh') + child = pexpect.spawn(command, ['--rcfile', bashrc], echo=False, + encoding='utf-8') + + # If the user runs 'env', the value of PS1 will be in the output. To avoid + # replwrap seeing that as the next prompt, we'll embed the marker characters + # for invisible characters in the prompt; these show up when inspecting the + # environment variable, but not when bash displays the prompt. + ps1 = PEXPECT_PROMPT[:5] + u'\\[\\]' + PEXPECT_PROMPT[5:] + ps2 = PEXPECT_CONTINUATION_PROMPT[:5] + u'\\[\\]' + PEXPECT_CONTINUATION_PROMPT[5:] + prompt_change = u"PS1='{0}' PS2='{1}' PROMPT_COMMAND=''".format(ps1, ps2) + + return REPLWrapper(child, u'\\$', prompt_change, + extra_init_cmd="export PAGER=cat") diff --git a/contrib/python/pexpect/py3/pexpect/run.py b/contrib/python/pexpect/py3/pexpect/run.py new file mode 100644 index 0000000000..ff288a1246 --- /dev/null +++ b/contrib/python/pexpect/py3/pexpect/run.py @@ -0,0 +1,157 @@ +import sys +import types + +from .exceptions import EOF, TIMEOUT +from .pty_spawn import spawn + +def run(command, timeout=30, withexitstatus=False, events=None, + extra_args=None, logfile=None, cwd=None, env=None, **kwargs): + + ''' + This function runs the given command; waits for it to finish; then + returns all output as a string. STDERR is included in output. If the full + path to the command is not given then the path is searched. + + Note that lines are terminated by CR/LF (\\r\\n) combination even on + UNIX-like systems because this is the standard for pseudottys. If you set + 'withexitstatus' to true, then run will return a tuple of (command_output, + exitstatus). If 'withexitstatus' is false then this returns just + command_output. + + The run() function can often be used instead of creating a spawn instance. + For example, the following code uses spawn:: + + from pexpect import * + child = spawn('scp foo user@example.com:.') + child.expect('(?i)password') + child.sendline(mypassword) + + The previous code can be replace with the following:: + + from pexpect import * + run('scp foo user@example.com:.', events={'(?i)password': mypassword}) + + **Examples** + + Start the apache daemon on the local machine:: + + from pexpect import * + run("/usr/local/apache/bin/apachectl start") + + Check in a file using SVN:: + + from pexpect import * + run("svn ci -m 'automatic commit' my_file.py") + + Run a command and capture exit status:: + + from pexpect import * + (command_output, exitstatus) = run('ls -l /bin', withexitstatus=1) + + The following will run SSH and execute 'ls -l' on the remote machine. The + password 'secret' will be sent if the '(?i)password' pattern is ever seen:: + + run("ssh username@machine.example.com 'ls -l'", + events={'(?i)password':'secret\\n'}) + + This will start mencoder to rip a video from DVD. This will also display + progress ticks every 5 seconds as it runs. For example:: + + from pexpect import * + def print_ticks(d): + print d['event_count'], + run("mencoder dvd://1 -o video.avi -oac copy -ovc copy", + events={TIMEOUT:print_ticks}, timeout=5) + + The 'events' argument should be either a dictionary or a tuple list that + contains patterns and responses. Whenever one of the patterns is seen + in the command output, run() will send the associated response string. + So, run() in the above example can be also written as: + + run("mencoder dvd://1 -o video.avi -oac copy -ovc copy", + events=[(TIMEOUT,print_ticks)], timeout=5) + + Use a tuple list for events if the command output requires a delicate + control over what pattern should be matched, since the tuple list is passed + to pexpect() as its pattern list, with the order of patterns preserved. + + Note that you should put newlines in your string if Enter is necessary. + + Like the example above, the responses may also contain a callback, either + a function or method. It should accept a dictionary value as an argument. + The dictionary contains all the locals from the run() function, so you can + access the child spawn object or any other variable defined in run() + (event_count, child, and extra_args are the most useful). A callback may + return True to stop the current run process. Otherwise run() continues + until the next event. A callback may also return a string which will be + sent to the child. 'extra_args' is not used by directly run(). It provides + a way to pass data to a callback function through run() through the locals + dictionary passed to a callback. + + Like :class:`spawn`, passing *encoding* will make it work with unicode + instead of bytes. You can pass *codec_errors* to control how errors in + encoding and decoding are handled. + ''' + if timeout == -1: + child = spawn(command, maxread=2000, logfile=logfile, cwd=cwd, env=env, + **kwargs) + else: + child = spawn(command, timeout=timeout, maxread=2000, logfile=logfile, + cwd=cwd, env=env, **kwargs) + if isinstance(events, list): + patterns= [x for x,y in events] + responses = [y for x,y in events] + elif isinstance(events, dict): + patterns = list(events.keys()) + responses = list(events.values()) + else: + # This assumes EOF or TIMEOUT will eventually cause run to terminate. + patterns = None + responses = None + child_result_list = [] + event_count = 0 + while True: + try: + index = child.expect(patterns) + if isinstance(child.after, child.allowed_string_types): + child_result_list.append(child.before + child.after) + else: + # child.after may have been a TIMEOUT or EOF, + # which we don't want appended to the list. + child_result_list.append(child.before) + if isinstance(responses[index], child.allowed_string_types): + child.send(responses[index]) + elif (isinstance(responses[index], types.FunctionType) or + isinstance(responses[index], types.MethodType)): + callback_result = responses[index](locals()) + sys.stdout.flush() + if isinstance(callback_result, child.allowed_string_types): + child.send(callback_result) + elif callback_result: + break + else: + raise TypeError("parameter `event' at index {index} must be " + "a string, method, or function: {value!r}" + .format(index=index, value=responses[index])) + event_count = event_count + 1 + except TIMEOUT: + child_result_list.append(child.before) + break + except EOF: + child_result_list.append(child.before) + break + child_result = child.string_type().join(child_result_list) + if withexitstatus: + child.close() + return (child_result, child.exitstatus) + else: + return child_result + +def runu(command, timeout=30, withexitstatus=False, events=None, + extra_args=None, logfile=None, cwd=None, env=None, **kwargs): + """Deprecated: pass encoding to run() instead. + """ + kwargs.setdefault('encoding', 'utf-8') + return run(command, timeout=timeout, withexitstatus=withexitstatus, + events=events, extra_args=extra_args, logfile=logfile, cwd=cwd, + env=env, **kwargs) diff --git a/contrib/python/pexpect/py3/pexpect/screen.py b/contrib/python/pexpect/py3/pexpect/screen.py new file mode 100644 index 0000000000..79f95c4e54 --- /dev/null +++ b/contrib/python/pexpect/py3/pexpect/screen.py @@ -0,0 +1,431 @@ +'''This implements a virtual screen. This is used to support ANSI terminal +emulation. The screen representation and state is implemented in this class. +Most of the methods are inspired by ANSI screen control codes. The +:class:`~pexpect.ANSI.ANSI` class extends this class to add parsing of ANSI +escape codes. + +PEXPECT LICENSE + + This license is approved by the OSI and FSF as GPL-compatible. + http://opensource.org/licenses/isc-license.txt + + Copyright (c) 2012, Noah Spurrier <noah@noah.org> + PERMISSION TO USE, COPY, MODIFY, AND/OR DISTRIBUTE THIS SOFTWARE FOR ANY + PURPOSE WITH OR WITHOUT FEE IS HEREBY GRANTED, PROVIDED THAT THE ABOVE + COPYRIGHT NOTICE AND THIS PERMISSION NOTICE APPEAR IN ALL COPIES. + THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + +''' + +import codecs +import copy +import sys + +import warnings + +warnings.warn(("pexpect.screen and pexpect.ANSI are deprecated. " + "We recommend using pyte to emulate a terminal screen: " + "https://pypi.python.org/pypi/pyte"), + stacklevel=2) + +NUL = 0 # Fill character; ignored on input. +ENQ = 5 # Transmit answerback message. +BEL = 7 # Ring the bell. +BS = 8 # Move cursor left. +HT = 9 # Move cursor to next tab stop. +LF = 10 # Line feed. +VT = 11 # Same as LF. +FF = 12 # Same as LF. +CR = 13 # Move cursor to left margin or newline. +SO = 14 # Invoke G1 character set. +SI = 15 # Invoke G0 character set. +XON = 17 # Resume transmission. +XOFF = 19 # Halt transmission. +CAN = 24 # Cancel escape sequence. +SUB = 26 # Same as CAN. +ESC = 27 # Introduce a control sequence. +DEL = 127 # Fill character; ignored on input. +SPACE = u' ' # Space or blank character. + +PY3 = (sys.version_info[0] >= 3) +if PY3: + unicode = str + +def constrain (n, min, max): + + '''This returns a number, n constrained to the min and max bounds. ''' + + if n < min: + return min + if n > max: + return max + return n + +class screen: + '''This object maintains the state of a virtual text screen as a + rectangular array. This maintains a virtual cursor position and handles + scrolling as characters are added. This supports most of the methods needed + by an ANSI text screen. Row and column indexes are 1-based (not zero-based, + like arrays). + + Characters are represented internally using unicode. Methods that accept + input characters, when passed 'bytes' (which in Python 2 is equivalent to + 'str'), convert them from the encoding specified in the 'encoding' + parameter to the constructor. Methods that return screen contents return + unicode strings, with the exception of __str__() under Python 2. Passing + ``encoding=None`` limits the API to only accept unicode input, so passing + bytes in will raise :exc:`TypeError`. + ''' + def __init__(self, r=24, c=80, encoding='latin-1', encoding_errors='replace'): + '''This initializes a blank screen of the given dimensions.''' + + self.rows = r + self.cols = c + self.encoding = encoding + self.encoding_errors = encoding_errors + if encoding is not None: + self.decoder = codecs.getincrementaldecoder(encoding)(encoding_errors) + else: + self.decoder = None + self.cur_r = 1 + self.cur_c = 1 + self.cur_saved_r = 1 + self.cur_saved_c = 1 + self.scroll_row_start = 1 + self.scroll_row_end = self.rows + self.w = [ [SPACE] * self.cols for _ in range(self.rows)] + + def _decode(self, s): + '''This converts from the external coding system (as passed to + the constructor) to the internal one (unicode). ''' + if self.decoder is not None: + return self.decoder.decode(s) + else: + raise TypeError("This screen was constructed with encoding=None, " + "so it does not handle bytes.") + + def _unicode(self): + '''This returns a printable representation of the screen as a unicode + string (which, under Python 3.x, is the same as 'str'). The end of each + screen line is terminated by a newline.''' + + return u'\n'.join ([ u''.join(c) for c in self.w ]) + + if PY3: + __str__ = _unicode + else: + __unicode__ = _unicode + + def __str__(self): + '''This returns a printable representation of the screen. The end of + each screen line is terminated by a newline. ''' + encoding = self.encoding or 'ascii' + return self._unicode().encode(encoding, 'replace') + + def dump (self): + '''This returns a copy of the screen as a unicode string. This is similar to + __str__/__unicode__ except that lines are not terminated with line + feeds.''' + + return u''.join ([ u''.join(c) for c in self.w ]) + + def pretty (self): + '''This returns a copy of the screen as a unicode string with an ASCII + text box around the screen border. This is similar to + __str__/__unicode__ except that it adds a box.''' + + top_bot = u'+' + u'-'*self.cols + u'+\n' + return top_bot + u'\n'.join([u'|'+line+u'|' for line in unicode(self).split(u'\n')]) + u'\n' + top_bot + + def fill (self, ch=SPACE): + + if isinstance(ch, bytes): + ch = self._decode(ch) + + self.fill_region (1,1,self.rows,self.cols, ch) + + def fill_region (self, rs,cs, re,ce, ch=SPACE): + + if isinstance(ch, bytes): + ch = self._decode(ch) + + rs = constrain (rs, 1, self.rows) + re = constrain (re, 1, self.rows) + cs = constrain (cs, 1, self.cols) + ce = constrain (ce, 1, self.cols) + if rs > re: + rs, re = re, rs + if cs > ce: + cs, ce = ce, cs + for r in range (rs, re+1): + for c in range (cs, ce + 1): + self.put_abs (r,c,ch) + + def cr (self): + '''This moves the cursor to the beginning (col 1) of the current row. + ''' + + self.cursor_home (self.cur_r, 1) + + def lf (self): + '''This moves the cursor down with scrolling. + ''' + + old_r = self.cur_r + self.cursor_down() + if old_r == self.cur_r: + self.scroll_up () + self.erase_line() + + def crlf (self): + '''This advances the cursor with CRLF properties. + The cursor will line wrap and the screen may scroll. + ''' + + self.cr () + self.lf () + + def newline (self): + '''This is an alias for crlf(). + ''' + + self.crlf() + + def put_abs (self, r, c, ch): + '''Screen array starts at 1 index.''' + + r = constrain (r, 1, self.rows) + c = constrain (c, 1, self.cols) + if isinstance(ch, bytes): + ch = self._decode(ch)[0] + else: + ch = ch[0] + self.w[r-1][c-1] = ch + + def put (self, ch): + '''This puts a characters at the current cursor position. + ''' + + if isinstance(ch, bytes): + ch = self._decode(ch) + + self.put_abs (self.cur_r, self.cur_c, ch) + + def insert_abs (self, r, c, ch): + '''This inserts a character at (r,c). Everything under + and to the right is shifted right one character. + The last character of the line is lost. + ''' + + if isinstance(ch, bytes): + ch = self._decode(ch) + + r = constrain (r, 1, self.rows) + c = constrain (c, 1, self.cols) + for ci in range (self.cols, c, -1): + self.put_abs (r,ci, self.get_abs(r,ci-1)) + self.put_abs (r,c,ch) + + def insert (self, ch): + + if isinstance(ch, bytes): + ch = self._decode(ch) + + self.insert_abs (self.cur_r, self.cur_c, ch) + + def get_abs (self, r, c): + + r = constrain (r, 1, self.rows) + c = constrain (c, 1, self.cols) + return self.w[r-1][c-1] + + def get (self): + + self.get_abs (self.cur_r, self.cur_c) + + def get_region (self, rs,cs, re,ce): + '''This returns a list of lines representing the region. + ''' + + rs = constrain (rs, 1, self.rows) + re = constrain (re, 1, self.rows) + cs = constrain (cs, 1, self.cols) + ce = constrain (ce, 1, self.cols) + if rs > re: + rs, re = re, rs + if cs > ce: + cs, ce = ce, cs + sc = [] + for r in range (rs, re+1): + line = u'' + for c in range (cs, ce + 1): + ch = self.get_abs (r,c) + line = line + ch + sc.append (line) + return sc + + def cursor_constrain (self): + '''This keeps the cursor within the screen area. + ''' + + self.cur_r = constrain (self.cur_r, 1, self.rows) + self.cur_c = constrain (self.cur_c, 1, self.cols) + + def cursor_home (self, r=1, c=1): # <ESC>[{ROW};{COLUMN}H + + self.cur_r = r + self.cur_c = c + self.cursor_constrain () + + def cursor_back (self,count=1): # <ESC>[{COUNT}D (not confused with down) + + self.cur_c = self.cur_c - count + self.cursor_constrain () + + def cursor_down (self,count=1): # <ESC>[{COUNT}B (not confused with back) + + self.cur_r = self.cur_r + count + self.cursor_constrain () + + def cursor_forward (self,count=1): # <ESC>[{COUNT}C + + self.cur_c = self.cur_c + count + self.cursor_constrain () + + def cursor_up (self,count=1): # <ESC>[{COUNT}A + + self.cur_r = self.cur_r - count + self.cursor_constrain () + + def cursor_up_reverse (self): # <ESC> M (called RI -- Reverse Index) + + old_r = self.cur_r + self.cursor_up() + if old_r == self.cur_r: + self.scroll_up() + + def cursor_force_position (self, r, c): # <ESC>[{ROW};{COLUMN}f + '''Identical to Cursor Home.''' + + self.cursor_home (r, c) + + def cursor_save (self): # <ESC>[s + '''Save current cursor position.''' + + self.cursor_save_attrs() + + def cursor_unsave (self): # <ESC>[u + '''Restores cursor position after a Save Cursor.''' + + self.cursor_restore_attrs() + + def cursor_save_attrs (self): # <ESC>7 + '''Save current cursor position.''' + + self.cur_saved_r = self.cur_r + self.cur_saved_c = self.cur_c + + def cursor_restore_attrs (self): # <ESC>8 + '''Restores cursor position after a Save Cursor.''' + + self.cursor_home (self.cur_saved_r, self.cur_saved_c) + + def scroll_constrain (self): + '''This keeps the scroll region within the screen region.''' + + if self.scroll_row_start <= 0: + self.scroll_row_start = 1 + if self.scroll_row_end > self.rows: + self.scroll_row_end = self.rows + + def scroll_screen (self): # <ESC>[r + '''Enable scrolling for entire display.''' + + self.scroll_row_start = 1 + self.scroll_row_end = self.rows + + def scroll_screen_rows (self, rs, re): # <ESC>[{start};{end}r + '''Enable scrolling from row {start} to row {end}.''' + + self.scroll_row_start = rs + self.scroll_row_end = re + self.scroll_constrain() + + def scroll_down (self): # <ESC>D + '''Scroll display down one line.''' + + # Screen is indexed from 1, but arrays are indexed from 0. + s = self.scroll_row_start - 1 + e = self.scroll_row_end - 1 + self.w[s+1:e+1] = copy.deepcopy(self.w[s:e]) + + def scroll_up (self): # <ESC>M + '''Scroll display up one line.''' + + # Screen is indexed from 1, but arrays are indexed from 0. + s = self.scroll_row_start - 1 + e = self.scroll_row_end - 1 + self.w[s:e] = copy.deepcopy(self.w[s+1:e+1]) + + def erase_end_of_line (self): # <ESC>[0K -or- <ESC>[K + '''Erases from the current cursor position to the end of the current + line.''' + + self.fill_region (self.cur_r, self.cur_c, self.cur_r, self.cols) + + def erase_start_of_line (self): # <ESC>[1K + '''Erases from the current cursor position to the start of the current + line.''' + + self.fill_region (self.cur_r, 1, self.cur_r, self.cur_c) + + def erase_line (self): # <ESC>[2K + '''Erases the entire current line.''' + + self.fill_region (self.cur_r, 1, self.cur_r, self.cols) + + def erase_down (self): # <ESC>[0J -or- <ESC>[J + '''Erases the screen from the current line down to the bottom of the + screen.''' + + self.erase_end_of_line () + self.fill_region (self.cur_r + 1, 1, self.rows, self.cols) + + def erase_up (self): # <ESC>[1J + '''Erases the screen from the current line up to the top of the + screen.''' + + self.erase_start_of_line () + self.fill_region (self.cur_r-1, 1, 1, self.cols) + + def erase_screen (self): # <ESC>[2J + '''Erases the screen with the background color.''' + + self.fill () + + def set_tab (self): # <ESC>H + '''Sets a tab at the current position.''' + + pass + + def clear_tab (self): # <ESC>[g + '''Clears tab at the current position.''' + + pass + + def clear_all_tabs (self): # <ESC>[3g + '''Clears all tabs.''' + + pass + +# Insert line Esc [ Pn L +# Delete line Esc [ Pn M +# Delete character Esc [ Pn P +# Scrolling region Esc [ Pn(top);Pn(bot) r + diff --git a/contrib/python/pexpect/py3/pexpect/spawnbase.py b/contrib/python/pexpect/py3/pexpect/spawnbase.py new file mode 100644 index 0000000000..59e905764c --- /dev/null +++ b/contrib/python/pexpect/py3/pexpect/spawnbase.py @@ -0,0 +1,525 @@ +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() diff --git a/contrib/python/pexpect/py3/pexpect/utils.py b/contrib/python/pexpect/py3/pexpect/utils.py new file mode 100644 index 0000000000..f774519609 --- /dev/null +++ b/contrib/python/pexpect/py3/pexpect/utils.py @@ -0,0 +1,187 @@ +import os +import sys +import stat +import select +import time +import errno + +try: + InterruptedError +except NameError: + # Alias Python2 exception to Python3 + InterruptedError = select.error + +if sys.version_info[0] >= 3: + string_types = (str,) +else: + string_types = (unicode, str) + + +def is_executable_file(path): + """Checks that path is an executable regular file, or a symlink towards one. + + This is roughly ``os.path isfile(path) and os.access(path, os.X_OK)``. + """ + # follow symlinks, + fpath = os.path.realpath(path) + + if not os.path.isfile(fpath): + # non-files (directories, fifo, etc.) + return False + + mode = os.stat(fpath).st_mode + + if (sys.platform.startswith('sunos') + and os.getuid() == 0): + # When root on Solaris, os.X_OK is True for *all* files, irregardless + # of their executability -- instead, any permission bit of any user, + # group, or other is fine enough. + # + # (This may be true for other "Unix98" OS's such as HP-UX and AIX) + return bool(mode & (stat.S_IXUSR | + stat.S_IXGRP | + stat.S_IXOTH)) + + return os.access(fpath, os.X_OK) + + +def which(filename, env=None): + '''This takes a given filename; tries to find it in the environment path; + then checks if it is executable. This returns the full path to the filename + if found and executable. Otherwise this returns None.''' + + # Special case where filename contains an explicit path. + if os.path.dirname(filename) != '' and is_executable_file(filename): + return filename + if env is None: + env = os.environ + p = env.get('PATH') + if not p: + p = os.defpath + pathlist = p.split(os.pathsep) + for path in pathlist: + ff = os.path.join(path, filename) + if is_executable_file(ff): + return ff + return None + + +def split_command_line(command_line): + + '''This splits a command line into a list of arguments. It splits arguments + on spaces, but handles embedded quotes, doublequotes, and escaped + characters. It's impossible to do this with a regular expression, so I + wrote a little state machine to parse the command line. ''' + + arg_list = [] + arg = '' + + # Constants to name the states we can be in. + state_basic = 0 + state_esc = 1 + state_singlequote = 2 + state_doublequote = 3 + # The state when consuming whitespace between commands. + state_whitespace = 4 + state = state_basic + + for c in command_line: + if state == state_basic or state == state_whitespace: + if c == '\\': + # Escape the next character + state = state_esc + elif c == r"'": + # Handle single quote + state = state_singlequote + elif c == r'"': + # Handle double quote + state = state_doublequote + elif c.isspace(): + # Add arg to arg_list if we aren't in the middle of whitespace. + if state == state_whitespace: + # Do nothing. + None + else: + arg_list.append(arg) + arg = '' + state = state_whitespace + else: + arg = arg + c + state = state_basic + elif state == state_esc: + arg = arg + c + state = state_basic + elif state == state_singlequote: + if c == r"'": + state = state_basic + else: + arg = arg + c + elif state == state_doublequote: + if c == r'"': + state = state_basic + else: + arg = arg + c + + if arg != '': + arg_list.append(arg) + return arg_list + + +def select_ignore_interrupts(iwtd, owtd, ewtd, timeout=None): + + '''This is a wrapper around select.select() that ignores signals. If + select.select raises a select.error exception and errno is an EINTR + error then it is ignored. Mainly this is used to ignore sigwinch + (terminal resize). ''' + + # if select() is interrupted by a signal (errno==EINTR) then + # we loop back and enter the select() again. + if timeout is not None: + end_time = time.time() + timeout + while True: + try: + return select.select(iwtd, owtd, ewtd, timeout) + except InterruptedError: + err = sys.exc_info()[1] + if err.args[0] == errno.EINTR: + # if we loop back we have to subtract the + # amount of time we already waited. + if timeout is not None: + timeout = end_time - time.time() + if timeout < 0: + return([], [], []) + else: + # something else caused the select.error, so + # this actually is an exception. + raise + + +def poll_ignore_interrupts(fds, timeout=None): + '''Simple wrapper around poll to register file descriptors and + ignore signals.''' + + if timeout is not None: + end_time = time.time() + timeout + + poller = select.poll() + for fd in fds: + poller.register(fd, select.POLLIN | select.POLLPRI | select.POLLHUP | select.POLLERR) + + while True: + try: + timeout_ms = None if timeout is None else timeout * 1000 + results = poller.poll(timeout_ms) + return [afd for afd, _ in results] + except InterruptedError: + err = sys.exc_info()[1] + if err.args[0] == errno.EINTR: + # if we loop back we have to subtract the + # amount of time we already waited. + if timeout is not None: + timeout = end_time - time.time() + if timeout < 0: + return [] + else: + # something else caused the select.error, so + # this actually is an exception. + raise diff --git a/contrib/python/pexpect/py3/ya.make b/contrib/python/pexpect/py3/ya.make new file mode 100644 index 0000000000..55ab18102d --- /dev/null +++ b/contrib/python/pexpect/py3/ya.make @@ -0,0 +1,41 @@ +# Generated by devtools/yamaker (pypi). + +PY3_LIBRARY() + +VERSION(4.8.0) + +LICENSE(ISC) + +PEERDIR( + contrib/python/ptyprocess +) + +NO_LINT() + +PY_SRCS( + TOP_LEVEL + pexpect/ANSI.py + pexpect/FSM.py + pexpect/__init__.py + pexpect/_async.py + pexpect/exceptions.py + pexpect/expect.py + pexpect/fdpexpect.py + pexpect/popen_spawn.py + pexpect/pty_spawn.py + pexpect/pxssh.py + pexpect/replwrap.py + pexpect/run.py + pexpect/screen.py + pexpect/spawnbase.py + pexpect/utils.py +) + +RESOURCE_FILES( + PREFIX contrib/python/pexpect/py3/ + .dist-info/METADATA + .dist-info/top_level.txt + pexpect/bashrc.sh +) + +END() diff --git a/contrib/python/pexpect/ya.make b/contrib/python/pexpect/ya.make index 818e4cc46c..ee4158641e 100644 --- a/contrib/python/pexpect/ya.make +++ b/contrib/python/pexpect/ya.make @@ -1,47 +1,18 @@ -# Generated by devtools/yamaker (pypi). - PY23_LIBRARY() -VERSION(4.8.0) - -LICENSE(ISC) +LICENSE(Service-Py23-Proxy) -PEERDIR( - contrib/python/ptyprocess -) +IF (PYTHON2) + PEERDIR(contrib/python/pexpect/py2) +ELSE() + PEERDIR(contrib/python/pexpect/py3) +ENDIF() NO_LINT() -PY_SRCS( - TOP_LEVEL - pexpect/ANSI.py - pexpect/FSM.py - pexpect/__init__.py - pexpect/exceptions.py - pexpect/expect.py - pexpect/fdpexpect.py - pexpect/popen_spawn.py - pexpect/pty_spawn.py - pexpect/pxssh.py - pexpect/replwrap.py - pexpect/run.py - pexpect/screen.py - pexpect/spawnbase.py - pexpect/utils.py -) - -IF (PYTHON3) - PY_SRCS( - TOP_LEVEL - pexpect/_async.py - ) -ENDIF() +END() -RESOURCE_FILES( - PREFIX contrib/python/pexpect/ - .dist-info/METADATA - .dist-info/top_level.txt - pexpect/bashrc.sh +RECURSE( + py2 + py3 ) - -END() |