/usr/share/pyshared/circuits/io/process.py is in python-circuits 2.1.0-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 | #!/usr/bin/python -i
from io import BytesIO
from subprocess import Popen, PIPE
from circuits.core.manager import TIMEOUT
from circuits.io import File, Write
from circuits import handler, Component, Event
class Started(Event):
"""Started Event"""
class Stopped(Event):
"""Stopped Event"""
class Start(Event):
"""Start Event"""
class Stop(Event):
"""Stop Event"""
class Signal(Event):
"""Signal Event"""
class Kill(Event):
"""Kill Event"""
class Wait(Event):
"""Wait Event"""
class Process(Component):
channel = "process"
def init(self, args, cwd=None, shell=False):
self.args = args
self.cwd = cwd
self.shell = shell
self.p = None
self.stderr = BytesIO()
self.stdout = BytesIO()
self._status = None
self._terminated = False
self._stdout_closed = False
self._stderr_closed = False
self._stdin = None
self._stderr = None
self._stdout = None
self._stdin_closed_handler = None
self._stderr_read_handler = None
self._stdout_read_handler = None
self._stderr_closed_handler = None
self._stdout_closed_handler = None
def start(self):
self.p = Popen(
self.args,
cwd=self.cwd,
shell=self.shell,
stdin=PIPE,
stderr=PIPE,
stdout=PIPE
)
self.stderr = BytesIO()
self.stdout = BytesIO()
self._status = None
self._stdin = File(
self.p.stdin,
channel="{0:d}.stdin".format(self.p.pid)
).register(self)
self._stderr = File(
self.p.stderr,
channel="{0:d}.stderr".format(self.p.pid)
).register(self)
self._stdout = File(
self.p.stdout,
channel="{0:d}.stdout".format(self.p.pid)
).register(self)
self._stderr_read_handler = self.addHandler(
handler("read", channel="{0:d}.stderr".format(self.p.pid))(
self.__class__._on_stderr_read
)
)
self._stdout_read_handler = self.addHandler(
handler("read", channel="{0:d}.stdout".format(self.p.pid))(
self.__class__._on_stdout_read
)
)
self._stderr_closed_handler = self.addHandler(
handler("closed", channel="{0:d}.stderr".format(self.p.pid))(
self.__class__._on_stderr_closed
)
)
self._stdout_closed_handler = self.addHandler(
handler("closed", channel="{0:d}.stdout".format(self.p.pid))(
self.__class__._on_stdout_closed
)
)
self.fire(Started(self))
@staticmethod
def _on_stdout_closed(self):
self._stdout_closed = True
@staticmethod
def _on_stderr_closed(self):
self._stderr_closed = True
def stop(self):
if self.p is not None:
self.p.terminate()
def kill(self):
self.p.kill()
def signal(self, signal):
self.p.send_signal(signal)
def wait(self):
return self.p.wait()
def write(self, data):
self.fire(Write(data), "{0:d}.stdin".format(self.p.pid))
@property
def status(self):
if getattr(self, "p", None) is not None:
return self.p.poll()
@staticmethod
def _on_stderr_read(self, data):
self.stderr.write(data)
@staticmethod
def _on_stdout_read(self, data):
self.stdout.write(data)
@handler("generate_events")
def _on_generate_events(self, event):
if self.p is not None and self._status is None:
self._status = self.p.poll()
if self._status is not None and self._stderr_closed \
and self._stdout_closed and not self._terminated:
self._terminated = True
self.removeHandler(self._stderr_read_handler)
self.removeHandler(self._stdout_read_handler)
self.removeHandler(self._stderr_closed_handler)
self.removeHandler(self._stdout_closed_handler)
self.fire(Stopped(self))
event.reduce_time_left(0)
return True
else:
event.reduce_time_left(TIMEOUT)
|