Python QProcess.close方法代码示例

# 需要导入模块: from qtpy.QtCore import QProcess [as 别名]
# 或者: from qtpy.QtCore.QProcess import close [as 别名]

#.........这里部分代码省略.........

        json_stdout = stdout.replace('\n\x00', '')
        try:
            json_stdout = json.loads(json_stdout)
        except Exception:
            json_stdout = stdout

        if self._partial_stdout is None:
            self._partial_stdout = stdout
        else:
            self._partial_stdout += stdout

        self.sig_partial.emit(self, json_stdout, None)

    def _communicate(self):
        """
        """
        if not self._communicate_first:
            if self._process.state() == QProcess.NotRunning:
                self.communicate()
        elif self._fired:
            self._timer.stop()

    def communicate(self):
        """
        """
        self._communicate_first = True
        self._process.waitForFinished()

        if self._partial_stdout is None:
            raw_stdout = self._process.readAllStandardOutput()
            stdout = handle_qbytearray(raw_stdout, _CondaAPI.UTF8)
        else:
            stdout = self._partial_stdout

        raw_stderr = self._process.readAllStandardError()
        stderr = handle_qbytearray(raw_stderr, _CondaAPI.UTF8)
        result = [stdout.encode(_CondaAPI.UTF8), stderr.encode(_CondaAPI.UTF8)]

        # FIXME: Why does anaconda client print to stderr???
        if PY2:
            stderr = stderr.decode()
        if 'using anaconda cloud api site' not in stderr.lower():
            if stderr.strip() and self._conda:
                raise Exception('{0}:\n'
                                'STDERR:\n{1}\nEND'
                                ''.format(' '.join(self._cmd_list),
                                          stderr))
#            elif stderr.strip() and self._pip:
#                raise PipError(self._cmd_list)
        else:
            result[-1] = ''

        if self._parse and stdout:
            try:
                result = json.loads(stdout), result[-1]
            except ValueError as error:
                result = stdout, error

            if 'error' in result[0]:
                error = '{0}: {1}'.format(" ".join(self._cmd_list),
                                          result[0]['error'])
                result = result[0], error

        if self._callback:
            result = self._callback(result[0], result[-1],
                                    **self._extra_kwargs), result[-1]

        self._result = result
        self.sig_finished.emit(self, result[0], result[-1])

        if result[-1]:
            logger.error(str(('error', result[-1])))

        self._fired = True

        return result

    def close(self):
        """
        """
        self._process.close()

    def is_finished(self):
        """
        """
        return self._process.state() == QProcess.NotRunning and self._fired

    def start(self):
        """
        """
        logger.debug(str(' '.join(self._cmd_list)))

        if not self._fired:
            self._partial_ouput = None
            self._process.start(self._cmd_list[0], self._cmd_list[1:])
            self._timer.start()
        else:
            raise CondaProcessWorker('A Conda ProcessWorker can only run once '
                                     'per method call.')

# 需要导入模块: from qtpy.QtCore import QProcess [as 别名]
# 或者: from qtpy.QtCore.QProcess import close [as 别名]

#.........这里部分代码省略.........
        self._process.readyReadStandardOutput.connect(self._partial)

    def _partial(self):
        """Callback for partial output."""
        raw_stdout = self._process.readAllStandardOutput()
        stdout = handle_qbytearray(raw_stdout, _CondaAPI.UTF8)

        json_stdout = stdout.replace('\n\x00', '')
        try:
            json_stdout = json.loads(json_stdout)
        except Exception:
            json_stdout = stdout

        if self._partial_stdout is None:
            self._partial_stdout = stdout
        else:
            self._partial_stdout += stdout

        self.sig_partial.emit(self, json_stdout, None)

    def _communicate(self):
        """Callback for communicate."""
        if (not self._communicate_first and
                self._process.state() == QProcess.NotRunning):
            self.communicate()
        elif self._fired:
            self._timer.stop()

    def communicate(self):
        """Retrieve information."""
        self._communicate_first = True
        self._process.waitForFinished()

        if self._partial_stdout is None:
            raw_stdout = self._process.readAllStandardOutput()
            stdout = handle_qbytearray(raw_stdout, _CondaAPI.UTF8)
        else:
            stdout = self._partial_stdout

        raw_stderr = self._process.readAllStandardError()
        stderr = handle_qbytearray(raw_stderr, _CondaAPI.UTF8)
        result = [stdout.encode(_CondaAPI.UTF8), stderr.encode(_CondaAPI.UTF8)]

        # FIXME: Why does anaconda client print to stderr???
        if PY2:
            stderr = stderr.decode()
        if 'using anaconda' not in stderr.lower():
            if stderr.strip() and self._conda:
                logger.error('{0}:\nSTDERR:\n{1}\nEND'.format(
                        ' '.join(self._cmd_list), stderr))
            elif stderr.strip() and self._pip:
                logger.error("pip error: {}".format(self._cmd_list))
        result[-1] = ''

        if self._parse and stdout:
            try:
                result = json.loads(stdout), result[-1]
            except Exception as error:
                result = stdout, str(error)

            if 'error' in result[0]:
                if not isinstance(result[0], dict):
                    result = {'error': str(result[0])}, None
                error = '{0}: {1}'.format(" ".join(self._cmd_list),
                                          result[0]['error'])
                result = result[0], error

        if self._callback:
            result = self._callback(result[0], result[-1],
                                    **self._extra_kwargs), result[-1]

        self._result = result
        self.sig_finished.emit(self, result[0], result[-1])

        if result[-1]:
            logger.error(str(('error', result[-1])))

        self._fired = True

        return result

    def close(self):
        """Close the running process."""
        self._process.close()

    def is_finished(self):
        """Return True if worker has finished processing."""
        return self._process.state() == QProcess.NotRunning and self._fired

    def start(self):
        """Start process."""
        logger.debug(str(' '.join(self._cmd_list)))

        if not self._fired:
            self._partial_ouput = None
            self._process.start(self._cmd_list[0], self._cmd_list[1:])
            self._timer.start()
        else:
            raise CondaProcessWorker('A Conda ProcessWorker can only run once '
                                     'per method call.')

# 需要导入模块: from qtpy.QtCore import QProcess [as 别名]
# 或者: from qtpy.QtCore.QProcess import close [as 别名]
class AsyncClient(QObject):

    """
    A class which handles a connection to a client through a QProcess.
    """

    # Emitted when the client has initialized.
    initialized = Signal()

    # Emitted when the client errors.
    errored = Signal()

    # Emitted when a request response is received.
    received = Signal(object)

    def __init__(self, target, executable=None, name=None,
                 extra_args=None, libs=None, cwd=None, env=None):
        super(AsyncClient, self).__init__()
        self.executable = executable or sys.executable
        self.extra_args = extra_args
        self.target = target
        self.name = name or self
        self.libs = libs
        self.cwd = cwd
        self.env = env
        self.is_initialized = False
        self.closing = False
        self.context = zmq.Context()
        QApplication.instance().aboutToQuit.connect(self.close)

        # Set up the heartbeat timer.
        self.timer = QTimer(self)
        self.timer.timeout.connect(self._heartbeat)

    def run(self):
        """Handle the connection with the server.
        """
        # Set up the zmq port.
        self.socket = self.context.socket(zmq.PAIR)
        self.port = self.socket.bind_to_random_port('tcp://*')

        # Set up the process.
        self.process = QProcess(self)
        if self.cwd:
            self.process.setWorkingDirectory(self.cwd)
        p_args = ['-u', self.target, str(self.port)]
        if self.extra_args is not None:
            p_args += self.extra_args

        # Set up environment variables.
        processEnvironment = QProcessEnvironment()
        env = self.process.systemEnvironment()
        if (self.env and 'PYTHONPATH' not in self.env) or DEV:
            python_path = osp.dirname(get_module_path('spyderlib'))
            # Add the libs to the python path.
            for lib in self.libs:
                try:
                    path = osp.dirname(imp.find_module(lib)[1])
                    python_path = osp.pathsep.join([python_path, path])
                except ImportError:
                    pass
            env.append("PYTHONPATH=%s" % python_path)
        if self.env:
            env.update(self.env)
        for envItem in env:
            envName, separator, envValue = envItem.partition('=')
            processEnvironment.insert(envName, envValue)
        self.process.setProcessEnvironment(processEnvironment)

        # Start the process and wait for started.
        self.process.start(self.executable, p_args)
        self.process.finished.connect(self._on_finished)
        running = self.process.waitForStarted()
        if not running:
            raise IOError('Could not start %s' % self)

        # Set up the socket notifer.
        fid = self.socket.getsockopt(zmq.FD)
        self.notifier = QSocketNotifier(fid, QSocketNotifier.Read, self)
        self.notifier.activated.connect(self._on_msg_received)

    def request(self, func_name, *args, **kwargs):
        """Send a request to the server.

        The response will be a dictionary the 'request_id' and the
        'func_name' as well as a 'result' field with the object returned by
        the function call or or an 'error' field with a traceback.
        """
        if not self.is_initialized:
            return
        request_id = uuid.uuid4().hex
        request = dict(func_name=func_name,
                       args=args,
                       kwargs=kwargs,
                       request_id=request_id)
        self._send(request)
        return request_id

    def close(self):
        """Cleanly close the connection to the server.
#.........这里部分代码省略.........

# 需要导入模块: from qtpy.QtCore import QProcess [as 别名]
# 或者: from qtpy.QtCore.QProcess import close [as 别名]

#.........这里部分代码省略.........

    def _get_encoding(self):
        """Return the encoding/codepage to use."""
        enco = 'utf-8'

        #  Currently only cp1252 is allowed?
        if WIN:
            import ctypes
            codepage = to_text_string(ctypes.cdll.kernel32.GetACP())
            # import locale
            # locale.getpreferredencoding()  # Differences?
            enco = 'cp' + codepage
        return enco

    def _set_environment(self, environ):
        """Set the environment on the QProcess."""
        if environ:
            q_environ = self._process.processEnvironment()
            for k, v in environ.items():
                q_environ.insert(k, v)
            self._process.setProcessEnvironment(q_environ)

    def _partial(self):
        """Callback for partial output."""
        raw_stdout = self._process.readAllStandardOutput()
        stdout = handle_qbytearray(raw_stdout, self._get_encoding())

        if self._partial_stdout is None:
            self._partial_stdout = stdout
        else:
            self._partial_stdout += stdout

        self.sig_partial.emit(self, stdout, None)

    def _communicate(self):
        """Callback for communicate."""
        if (not self._communicate_first and
                self._process.state() == QProcess.NotRunning):
            self.communicate()
        elif self._fired:
            self._timer.stop()

    def communicate(self):
        """Retrieve information."""
        self._communicate_first = True
        self._process.waitForFinished()

        enco = self._get_encoding()
        if self._partial_stdout is None:
            raw_stdout = self._process.readAllStandardOutput()
            stdout = handle_qbytearray(raw_stdout, enco)
        else:
            stdout = self._partial_stdout

        raw_stderr = self._process.readAllStandardError()
        stderr = handle_qbytearray(raw_stderr, enco)
        result = [stdout.encode(enco), stderr.encode(enco)]

        if PY2:
            stderr = stderr.decode()
        result[-1] = ''

        self._result = result

        if not self._fired:
            self.sig_finished.emit(self, result[0], result[-1])

        self._fired = True

        return result

    def close(self):
        """Close the running process."""
        self._process.close()

    def is_finished(self):
        """Return True if worker has finished processing."""
        return self._process.state() == QProcess.NotRunning and self._fired

    def _start(self):
        """Start process."""
        if not self._fired:
            self._partial_ouput = None
            self._process.start(self._cmd_list[0], self._cmd_list[1:])
            self._timer.start()

    def terminate(self):
        """Terminate running processes."""
        if self._process.state() == QProcess.Running:
            try:
                self._process.terminate()
            except Exception:
                pass
        self._fired = True

    def start(self):
        """Start worker."""
        if not self._started:
            self.sig_started.emit(self)
            self._started = True