def main():
    """Start Spyder application. If single instance mode is turned on (default
    behavior) and an instance of Spyder is already running, this will just 
    parse and send command line options to the application."""

    # Renaming old configuration files (the '.' prefix has been removed)
    # (except for .spyder.ini --> spyder.ini, which is done in userconfig.py)
    if DEV is None:
        cpath = get_conf_path()
        for fname in os.listdir(cpath):
            if fname.startswith('.'):
                old, new = osp.join(cpath, fname), osp.join(cpath, fname[1:])
                try:
                    os.rename(old, new)
                except OSError:
                    pass

    # Parse command line options
    options, args = get_options()

    # Store variable to be used in self.restart (restart spyder instance)
    os.environ['SPYDER_ARGS'] = str(sys.argv[1:])

    if CONF.get('main', 'single_instance') and not options.new_instance \
      and not running_in_mac_app():
        # Minimal delay (0.1-0.2 secs) to avoid that several
        # instances started at the same time step in their
        # own foots while trying to create the lock file
        time.sleep(random.randrange(1000, 2000, 90)/10000.)
        
        # Lock file creation
        lockf = get_conf_path('spyder.lock')
        lock = lockfile.FilesystemLock(lockf)
        
        # lock.lock() tries to lock spyder.lock. If it fails,
        # it returns False and so we try to start the client
        if not lock.lock():
            if args:
                send_args_to_spyder(args)
            else:
                print("Spyder is already running. If you want to open a new \n"
                      "instance, please pass to it the --new-instance option")
        else:
            if TEST is None:
                atexit.register(lock.unlock)
            from spyderlib import spyder
            spyder.main()
    else:
        from spyderlib import spyder
        spyder.main()

def main():
    """Start Spyder application. If single instance mode is turned on (default
    behavior) and an instance of Spyder is already running, this will just 
    parse and send command line options to the application."""

    # Renaming old configuration files (the '.' prefix has been removed)
    # (except for .spyder.ini --> spyder.ini, which is done in userconfig.py)
    if DEV is None:
        cpath = get_conf_path()
        for fname in os.listdir(cpath):
            if fname.startswith('.'):
                old, new = osp.join(cpath, fname), osp.join(cpath, fname[1:])
                try:
                    os.rename(old, new)
                except OSError:
                    pass

    # Parse command line options
    options, args = get_options()

    # Check if we are running from our Mac app
    if sys.platform == "darwin" and 'Spyder.app' in __file__:
        mac_app = True
    else:
        mac_app = False

    if CONF.get('main', 'single_instance') and not options.new_instance \
      and not mac_app:
        # Minimal delay (0.1-0.2 secs) to avoid that several
        # instances started at the same time step in their
        # own foots while trying to create the lock file
        time.sleep(random.randrange(1000, 2000, 90)/10000.)
        
        # Lock file creation
        lockf = get_conf_path('spyder.lock')
        lock = lockfile.FilesystemLock(lockf)
        
        # lock.lock() tries to lock spyder.lock. If it fails,
        # it returns False and so we try to start the client
        if not lock.lock():
            if args:
                send_args_to_spyder(args)
        else:
            if TEST is None:
                atexit.register(lock.unlock)
            from spyderlib import spyder
            spyder.main()
    else:
        from spyderlib import spyder
        spyder.main()

def save_session(filename):
    """Save Spyder session"""
    local_fname = get_conf_path(osp.basename(filename))
    filename = osp.abspath(filename)
    old_cwd = os.getcwdu()
    os.chdir(get_conf_path())
    error_message = None
    try:
        tar = tarfile.open(local_fname, "w")
        for fname in SAVED_CONFIG_FILES:
            if osp.isfile(fname):
                tar.add(fname)
        tar.close()
        shutil.move(local_fname, filename)
    except Exception, error:
        error_message = unicode(error)

    def __init__(self, plugin, history_filename, connection_file=None,
                 kernel_widget_id=None, menu_actions=None):
        super(IPythonClient, self).__init__(plugin)
        SaveHistoryMixin.__init__(self)
        self.options_button = None

        self.connection_file = connection_file
        self.kernel_widget_id = kernel_widget_id
        self.name = ''
        self.shellwidget = IPythonShellWidget(config=plugin.ipywidget_config(),
                                              local_kernel=False)
        self.shellwidget.hide()
        self.infowidget = WebView(self)
        self.menu_actions = menu_actions
        self.history_filename = get_conf_path(history_filename)
        self.history = []
        self.namespacebrowser = None
        
        self.set_infowidget_font()
        self.loading_page = self._create_loading_page()
        self.infowidget.setHtml(self.loading_page)
        
        vlayout = QVBoxLayout()
        toolbar_buttons = self.get_toolbar_buttons()
        hlayout = QHBoxLayout()
        for button in toolbar_buttons:
            hlayout.addWidget(button)
        vlayout.addLayout(hlayout)
        vlayout.setContentsMargins(0, 0, 0, 0)
        vlayout.addWidget(self.shellwidget)
        vlayout.addWidget(self.infowidget)
        self.setLayout(vlayout)
        
        self.exit_callback = lambda: plugin.close_console(client=self)

def reset_session():
    """Remove all config files"""
    print("*** Reset Spyder settings to defaults ***", file=STDERR)
    for fname in SAVED_CONFIG_FILES:
        cfg_fname = get_conf_path(fname)
        if osp.isfile(cfg_fname):
            os.remove(cfg_fname)
        elif osp.isdir(cfg_fname):
            shutil.rmtree(cfg_fname)
        else:
            continue
        print("removing:", cfg_fname, file=STDERR)

    def __init__(self, parent, history_filename, debug=False, profile=False):
        """
        parent : specifies the parent widget
        """
        ConsoleBaseWidget.__init__(self, parent)
                
        # Prompt position: tuple (line, index)
        self.current_prompt_pos = None
        self.new_input_line = True
        
        # History
        self.histidx = None
        self.hist_wholeline = False
        assert isinstance(history_filename, (str, unicode))
        self.history_filename = history_filename
        self.history = self.load_history()
        
        # Session
        self.historylog_filename = CONF.get('main', 'historylog_filename',
                                            get_conf_path('history.log'))
        
        # Context menu
        self.menu = None
        self.setup_context_menu()

        # Debug mode
        self.debug = debug

        # Simple profiling test
        self.profile = profile
        
        # Buffer to increase performance of write/flush operations
        self.__buffer = []
        self.__timestamp = 0.0
        self.__flushtimer = QTimer(self)
        self.__flushtimer.setSingleShot(True)
        self.connect(self.__flushtimer, SIGNAL('timeout()'), self.flush)

        # Give focus to widget
        self.setFocus()
                
        # Calltips
        calltip_size = CONF.get('shell_appearance', 'calltips/size')
        calltip_font = get_font('shell_appearance', 'calltips')
        self.setup_calltips(calltip_size, calltip_font)
        
        # Completion
        completion_size = CONF.get('shell_appearance', 'completion/size')
        completion_font = get_font('shell_appearance', 'completion')
        self.completion_widget.setup_appearance(completion_size,
                                                completion_font)
        # Cursor width
        self.setCursorWidth( CONF.get('shell_appearance', 'cursor/width') )

    def __init__(self, parent=None, namespace=None, commands=[], message=None,
                 max_line_count=300, font=None, exitfunc=None, profile=False,
                 multithreaded=True, light_background=True):
        PythonShellWidget.__init__(self, parent,
                                   get_conf_path('history_internal.py'),
                                   profile)
        
        self.set_light_background(light_background)
        self.multithreaded = multithreaded
        self.setMaximumBlockCount(max_line_count)
        
        # For compatibility with ExtPythonShellWidget
        self.is_ipykernel = False
        
        if font is not None:
            self.set_font(font)
        
        # Allow raw_input support:
        self.input_loop = None
        self.input_mode = False
        
        # KeyboardInterrupt support
        self.interrupted = False # used only for not-multithreaded mode
        self.connect(self, SIGNAL("keyboard_interrupt()"),
                     self.keyboard_interrupt)
        
        # Code completion / calltips
        getcfg = lambda option: CONF.get('internal_console', option)
        case_sensitive = getcfg('codecompletion/case_sensitive')
        show_single = getcfg('codecompletion/show_single')
        self.set_codecompletion_case(case_sensitive)
        self.set_codecompletion_single(show_single)
        
        # keyboard events management
        self.eventqueue = []

        # Init interpreter
        self.exitfunc = exitfunc
        self.commands = commands
        self.message = message
        self.interpreter = None
        self.start_interpreter(namespace)
        
        # Clear status bar
        self.emit(SIGNAL("status(QString)"), '')
        
        # Embedded shell -- requires the monitor (which installs the
        # 'open_in_spyder' function in builtins)
        if hasattr(builtins, 'open_in_spyder'):
            self.connect(self, SIGNAL("go_to_error(QString)"),
                         self.open_with_external_spyder)

def load_session(filename):
    """Load Spyder session"""
    filename = osp.abspath(filename)
    old_cwd = os.getcwdu()
    os.chdir(osp.dirname(filename))
    error_message = None
    renamed = False
    try:
        tar = tarfile.open(filename, "r")
        extracted_files = tar.getnames()
        
        # Rename original config files
        for fname in extracted_files:
            orig_name = get_conf_path(fname)
            bak_name = get_conf_path(fname+'.bak')
            if osp.isfile(bak_name):
                os.remove(bak_name)
            if osp.isfile(orig_name):
                os.rename(orig_name, bak_name)
        renamed = True
        
        tar.extractall()
        
        for fname in extracted_files:
            shutil.move(fname, get_conf_path(fname))
            
    except Exception, error:
        error_message = unicode(error)
        if renamed:
            # Restore original config files
            for fname in extracted_files:
                orig_name = get_conf_path(fname)
                bak_name = get_conf_path(fname+'.bak')
                if osp.isfile(orig_name):
                    os.remove(orig_name)
                if osp.isfile(bak_name):
                    os.rename(bak_name, orig_name)

def load_session(filename):
    """Load Spyder session"""
    filename = osp.abspath(filename)
    old_cwd = getcwd()
    os.chdir(osp.dirname(filename))
    error_message = None
    renamed = False
    try:
        tar = tarfile.open(filename, "r")
        extracted_files = tar.getnames()

        # Rename original config files
        for fname in extracted_files:
            orig_name = get_conf_path(fname)
            bak_name = get_conf_path(fname + ".bak")
            if osp.isfile(bak_name):
                os.remove(bak_name)
            if osp.isfile(orig_name):
                os.rename(orig_name, bak_name)
        renamed = True

        tar.extractall()

        for fname in extracted_files:
            shutil.move(fname, get_conf_path(fname))

    except Exception as error:
        error_message = to_text_string(error)
        if renamed:
            # Restore original config files
            for fname in extracted_files:
                orig_name = get_conf_path(fname)
                bak_name = get_conf_path(fname + ".bak")
                if osp.isfile(orig_name):
                    os.remove(orig_name)
                if osp.isfile(bak_name):
                    os.rename(bak_name, orig_name)

    finally:
        # Removing backup config files
        for fname in extracted_files:
            bak_name = get_conf_path(fname + ".bak")
            if osp.isfile(bak_name):
                os.remove(bak_name)

    os.chdir(old_cwd)
    return error_message

    except Exception, error:
        error_message = unicode(error)
        if renamed:
            # Restore original config files
            for fname in extracted_files:
                orig_name = get_conf_path(fname)
                bak_name = get_conf_path(fname+'.bak')
                if osp.isfile(orig_name):
                    os.remove(orig_name)
                if osp.isfile(bak_name):
                    os.rename(bak_name, orig_name)
                    
    finally:
        # Removing backup config files
        for fname in extracted_files:
            bak_name = get_conf_path(fname+'.bak')
            if osp.isfile(bak_name):
                os.remove(bak_name)
        
    os.chdir(old_cwd)
    return error_message


from spyderlib.baseconfig import _

class IOFunctions(object):
    def __init__(self):
        self.load_extensions = None
        self.save_extensions = None
        self.load_filters = None
        self.save_filters = None

    def __init__(self, parent=None, fname=None, wdir=None,
                 history_filename=None, show_icontext=True,
                 light_background=True, menu_actions=None,
                 show_buttons_inside=True, show_elapsed_time=True):
        QWidget.__init__(self, parent)
        
        self.menu_actions = menu_actions
        
        self.run_button = None
        self.kill_button = None
        self.options_button = None
        self.icontext_action = None

        self.show_elapsed_time = show_elapsed_time
        
        self.fname = fname
        if wdir is None:
            wdir = osp.dirname(osp.abspath(fname))
        self.wdir = wdir if osp.isdir(wdir) else None
        self.arguments = ""
        
        self.shell = self.SHELL_CLASS(parent, get_conf_path(history_filename))
        self.shell.set_light_background(light_background)
        self.connect(self.shell, SIGNAL("execute(QString)"),
                     self.send_to_process)
        self.connect(self.shell, SIGNAL("keyboard_interrupt()"),
                     self.keyboard_interrupt)
        # Redirecting some SIGNALs:
        self.connect(self.shell, SIGNAL('redirect_stdio(bool)'),
                     lambda state: self.emit(SIGNAL('redirect_stdio(bool)'),
                                             state))
        
        self.state_label = None
        self.time_label = None
                
        vlayout = QVBoxLayout()
        toolbar_buttons = self.get_toolbar_buttons()
        if show_buttons_inside:
            self.state_label = QLabel()
            hlayout = QHBoxLayout()
            hlayout.addWidget(self.state_label)
            hlayout.addStretch(0)
            hlayout.addWidget(self.create_time_label())
            hlayout.addStretch(0)
            for button in toolbar_buttons:
                hlayout.addWidget(button)
            vlayout.addLayout(hlayout)
        else:
            vlayout.setContentsMargins(0, 0, 0, 0)
        vlayout.addWidget(self.get_shell_widget())
        self.setLayout(vlayout)
        self.resize(640, 480)
        if parent is None:
            self.setWindowIcon(self.get_icon())
            self.setWindowTitle(_("Console"))

        self.t0 = None
        self.timer = QTimer(self)

        self.process = None
        
        self.is_closing = False

        if show_buttons_inside:
            self.update_time_label_visibility()

import os.path
import pkgutil
import re
from time import time
import sys
from zipimport import zipimporter

from spyderlib.baseconfig import get_conf_path, running_in_mac_app
from spyderlib.utils.external.pickleshare import PickleShareDB

# -----------------------------------------------------------------------------
# Globals and constants
# -----------------------------------------------------------------------------

# Path to the modules database
MODULES_PATH = get_conf_path("db")

# Time in seconds after which we give up
TIMEOUT_GIVEUP = 20

# Py2app only uses .pyc files for the stdlib when optimize=0,
# so we need to add it as another suffix here
if running_in_mac_app():
    suffixes = imp.get_suffixes() + [(".pyc", "rb", "2")]
else:
    suffixes = imp.get_suffixes()

# Regular expression for the python import statement
import_re = re.compile(
    r"(?P<name>[a-zA-Z_][a-zA-Z0-9_]*?)"
    r"(?P<package>[/\\]__init__)?"

 def load_plugin(self):
     """Load the Rope introspection plugin"""
     if not programs.is_module_installed('rope', ROPE_REQVER):
         raise ImportError('Requires Rope %s' % ROPE_REQVER)
     self.project = None
     self.create_rope_project(root_path=get_conf_path())

from spyderlib.qt.QtCore import QThread, SIGNAL, Signal

import threading
import socket
import errno
import os

# Local imports
from spyderlib.baseconfig import get_conf_path, DEBUG
from spyderlib.utils.misc import select_port
from spyderlib.utils.debug import log_last_error
from spyderlib.utils.bsdsocket import read_packet, write_packet


LOG_FILENAME = get_conf_path('introspection.log')

DEBUG_INTROSPECTION = DEBUG >= 2

if DEBUG_INTROSPECTION:
    import logging
    logging.basicConfig(filename=get_conf_path('introspection_debug.log'),
                        level=logging.DEBUG)

SPYDER_PORT = 20128

class IntrospectionServer(threading.Thread):
    """Introspection server"""
    def __init__(self):
        threading.Thread.__init__(self)
        self.shells = {}

def main():
    """
    Start Spyder application.

    If single instance mode is turned on (default behavior) and an instance of
    Spyder is already running, this will just parse and send command line
    options to the application.
    """
    # Renaming old configuration files (the '.' prefix has been removed)
    # (except for .spyder.ini --> spyder.ini, which is done in userconfig.py)
    if DEV is None:
        cpath = get_conf_path()
        for fname in os.listdir(cpath):
            if fname.startswith('.'):
                old, new = osp.join(cpath, fname), osp.join(cpath, fname[1:])
                try:
                    os.rename(old, new)
                except OSError:
                    pass

    # Parse command line options
    options, args = get_options()

    # Store variable to be used in self.restart (restart spyder instance)
    os.environ['SPYDER_ARGS'] = str(sys.argv[1:])

    if CONF.get('main', 'single_instance') and not options.new_instance \
      and not running_in_mac_app():
        # Minimal delay (0.1-0.2 secs) to avoid that several
        # instances started at the same time step in their
        # own foots while trying to create the lock file
        time.sleep(random.randrange(1000, 2000, 90)/10000.)

        # Lock file creation
        lock_file = get_conf_path('spyder.lock')
        lock = lockfile.FilesystemLock(lock_file)

        # Try to lock spyder.lock. If it's *possible* to do it, then
        # there is no previous instance running and we can start a
        # new one. If *not*, then there is an instance already
        # running, which is locking that file
        try:
            lock_created = lock.lock()
        except:
            # If locking fails because of errors in the lockfile
            # module, try to remove a possibly stale spyder.lock.
            # This is reported to solve all problems with
            # lockfile (See issue 2363)
            try:
                if os.name == 'nt':
                    if osp.isdir(lock_file):
                        import shutil
                        shutil.rmtree(lock_file, ignore_errors=True)
                else:
                    if osp.islink(lock_file):
                        os.unlink(lock_file)
            except:
                pass

            # Then start Spyder as usual and *don't* continue
            # executing this script because it doesn't make
            # sense
            from spyderlib import spyder
            spyder.main()
            return

        if lock_created:
            # Start a new instance
            if TEST is None:
                atexit.register(lock.unlock)
            from spyderlib import spyder
            spyder.main()
        else:
            # Pass args to Spyder or print an informative
            # message
            if args:
                send_args_to_spyder(args)
            else:
                print("Spyder is already running. If you want to open a new \n"
                      "instance, please pass to it the --new-instance option")
    else:
        from spyderlib import spyder
        spyder.main()

import os.path
import pkgutil
import re
from time import time
import sys
from zipimport import zipimporter

from spyderlib.baseconfig import get_conf_path
from spyderlib.utils.external.pickleshare import PickleShareDB

#-----------------------------------------------------------------------------
# Globals and constants
#-----------------------------------------------------------------------------

# Path to the modules database
MODULES_PATH = get_conf_path('db')

# Time in seconds after which we give up
TIMEOUT_GIVEUP = 20

# Py2app only uses .pyc files for the stdlib when optimize=0,
# so we need to add it as another suffix here
if sys.platform == 'darwin' and 'Spyder.app' in __file__:
    suffixes = imp.get_suffixes() + [('.pyc', 'rb', '2')]
else:
    suffixes = imp.get_suffixes()

# Regular expression for the python import statement
import_re = re.compile(r'(?P<name>[a-zA-Z_][a-zA-Z0-9_]*?)'
                       r'(?P<package>[/\\]__init__)?'
                       r'(?P<suffix>%s)$' %

import os, threading, socket, thread, struct, cPickle as pickle

# Local imports
from spyderlib.utils.misc import fix_reference_name
from spyderlib.utils.debug import log_last_error
from spyderlib.utils.dochelpers import (getargtxt, getdoc, getsource,
                                        getobjdir, isdefined)
from spyderlib.utils.bsdsocket import (communicate, read_packet, write_packet,
                                       PACKET_NOT_RECEIVED)
from spyderlib.utils.module_completion import moduleCompletion
from spyderlib.baseconfig import get_conf_path, get_supported_types, DEBUG

SUPPORTED_TYPES = get_supported_types()

LOG_FILENAME = get_conf_path('monitor.log')

if DEBUG:
    import logging
    logging.basicConfig(filename=get_conf_path('monitor_debug.log'),
                        level=logging.DEBUG)

REMOTE_SETTINGS = ('check_all', 'exclude_private', 'exclude_uppercase',
                   'exclude_capitalized', 'exclude_unsupported',
                   'excluded_names', 'truncate', 'minmax', 'collvalue',
                   'inplace', 'remote_editing', 'autorefresh')

def get_remote_data(data, settings, mode, more_excluded_names=None):
    """
    Return globals according to filter described in *settings*:
        * data: data to be filtered (dictionary)

import imp
import time

from spyderlib.baseconfig import DEBUG, get_conf_path, debug_print
from spyderlib.utils.introspection.module_completion import (
    get_preferred_submodules)
from spyderlib.utils import sourcecode
from spyderlib.utils.debug import log_last_error

from spyderlib.qt.QtGui import QApplication
from spyderlib.qt.QtCore import Signal, QThread, QObject, QTimer


PLUGINS = ['rope', 'jedi', 'fallback']

LOG_FILENAME = get_conf_path('introspection.log')
DEBUG_EDITOR = DEBUG >= 3
LEAD_TIME_SEC = 0.25


class RequestHandler(QObject):

    """Handle introspection request.
    """

    introspection_complete = Signal()

    def __init__(self, code_info, plugins):
        super(RequestHandler, self).__init__()
        self.info = code_info
        self.timer = QTimer()