def __init__(self):

self.errLine = 0

self.errObject = []

self.errReason = ""

# Variable to store SockJSConnection calss instance

# in order to call it's send() method from MainProgram thread

self.weioPipe = None

# Object to store ioloop handlers that drive sterr &

# stdout from user program

self.ioloopObj = None

# Handler sanity, True alive, False dead

self.stdoutHandlerIsLive = None

self.stderrHandlerIsLive = None

self.connection = None

# Ask this variable is player is plaing at this moment

self.playing = False

self.lastLaunched = None

def setConnectionObject(self, connection):

# captures only the last connection

self.connection = connection

def send(self, data):

# if no connection object (editor is not opened) than data for editor is lost

if not(self.connection is None):

self.connection.send(data)

def startUserTornado(self):

data = {}

processName = './weioRunner.py'

#print("weioMain indipendent process launching...")

self.weioPipe = subprocess.Popen([processName], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE)

self.ioloopObj = ioloop.IOLoop.instance()

# Callback for STDOUT

#callback = functools.partial(self.socket_connection_ready, sock)

callback = functools.partial(self.weioMainHandler, data)

#ioloopObj.add_handler(sock.fileno(), callback, ioloopObj.READ)

self.ioloopObj.add_handler(self.weioPipe.stdout.fileno(), callback, self.ioloopObj.READ)

self.stdoutHandlerIsLive = True;

# Callback for STDERR

callbackErr = functools.partial(self.weioMainHandlerErr, data)

self.ioloopObj.add_handler(self.weioPipe.stderr.fileno(), callbackErr, self.ioloopObj.READ)

self.stderrHandlerIsLive = True;

def play(self, rq={'request':'play'}):

""" This is where all the magic happens.

"Play" button will spawn a new subprocess

which will execute users program written in the editor.

This subprocess will communicate with Tornado wia non-blocking pipes,

so that Tornado can simply transfer subprocess's `stdout` and `stderr`

to the client via WebSockets. """

# get configuration from file

config = weioConfig.getConfiguration()

# stop if process is already running

self.stop()

data = {}

lp = config["last_opened_project"]

# check if user project exists before launching

#if (weioFiles.checkIfFileExists(up+lp+"main.py")):

if (weioFiles.checkIfFileExists(lp+"/main.py")):

#print("weioMain indipendent process launching...")

# Inform client the we run subprocess

data['requested'] = rq['request']

data['status'] = "Warming up the engines..."

self.send(json.dumps(data))

consoleWelcome = {}

consoleWelcome['data'] = "WeIO user program started"

consoleWelcome['serverPush'] = "sysConsole"

self.lastLaunched = datetime.datetime.now().strftime("%Y-%m-%d %H:%M:%S")

consoleWelcome['data'] = 'WeIO user server launched ' + self.lastLaunched

if (weioIdeGlobals.CONSOLE != None):

#weioIdeGlobals.CONSOLE.send(json.dumps(data))

weioIdeGlobals.CONSOLE.send(json.dumps(consoleWelcome))

self.playing = True

# send *start* command to user tornado

self.weioPipe.stdin.write("*START*")

else : # FILE DON'T EXIST

warning = {}

warning['requested'] = rq['request']

warning['status'] = "main.py don't exist!"

warning['state'] = "error"

self.send(json.dumps(warning))

def stop(self, rq={'request':'stop'}):

"""Stop running application"""

self.playing = False

data = {}

data['requested'] = rq['request']

data['status'] = "User program stopped!"

self.send(json.dumps(data))

# Send *STOP* command to User Tornado

self.weioPipe.stdin.write("*STOP*")

if self.lastLaunched is not None :

consoleWelcome = {}

consoleWelcome['serverPush'] = "sysConsole"

consoleWelcome['data'] = 'WeIO user program stoped. It was runnig since : ' + self.lastLaunched

if (weioIdeGlobals.CONSOLE != None):

weioIdeGlobals.CONSOLE.send(json.dumps(consoleWelcome))

self.lastLaunched = None

def weioMainHandler(self, data, fd, events):

"""Stream stdout to browser"""

line = self.weioPipe.stdout.readline()

print "STDOUT ", line

if line :

# parse incoming data

#stdout = line.rstrip()

stdout = line

print(stdout)

#pack and go

data = {}

if ("*SYSOUT*" in line) :

stdout = line.split("*SYSOUT*")[1]

data['serverPush'] = 'sysConsole'

else :

data['serverPush'] = 'stdout'

data['data'] = stdout

# TODO, send this only once, at the beginning

data['status'] = "Check output console"

# this is raw output, some basic parsing is needed in javascript \n etc...

if (weioIdeGlobals.CONSOLE != None):

weioIdeGlobals.CONSOLE.send(json.dumps(data))

if self.weioPipe.poll() is not None :

""" Child is terminated STDOUT"""

#print "Child has terminated - removing handler STDOUT"

self.playing = False

ioloop.IOLoop.instance().remove_handler(self.weioPipe.stdout.fileno())

self.stdoutHandlerIsLive = False;

return

def weioMainHandlerErr(self, data, fd, events):

"""Stream stderr to browser"""

self.playing = False

line = self.weioPipe.stderr.readline()

if line :

# parse incoming data

#stdout = line.rstrip()

stderr = line

print(stderr)

#pack and go

data = {}

data['serverPush'] = 'stderr'

data['data'] = stderr

# TODO, send this only once, at the beginning

data['status'] = "Check output console for errors!"

if 'Traceback (most recent call last):' in stderr :

#print "traceback info is comming..."

self.errLine = 0

print "ERR " + str(self.errLine) + " : " + stderr

self.errLine+=1

if 'File "' in stderr :

errCoords = 1

oneError = {}

arg = stderr.split(",")

errInFile = arg[0].split('"')

errInFile = errInFile[1]

print "error in file : ", errInFile

#data['errFile'] = errInFile

oneError['file'] = errInFile

errInLine = arg[1].split("line")

errInLine = errInLine[1]

oneError['line'] = errInLine.split()

print "error in line : ", errInLine

#data['errLine'] = errInLine

# add error object to array

self.errObject.append(oneError)

self.errReason = stderr

# this is raw output, some basic parsing is needed in javascript \n etc...

if (weioIdeGlobals.CONSOLE != None):

weioIdeGlobals.CONSOLE.send(json.dumps(data))

if self.weioPipe.poll() is not None :

""" Child is terminated STDERR"""

#print "Child has terminated - removing handler STDERR"

self.playing = False

self.errLine = 0

data = {}

data['serverPush'] = 'errorObjects'

if (len(self.errObject)>0):

self.errObject[len(self.errObject)-1]['reason'] = self.errReason

data['data'] = self.errObject

self.errObject = []

if (weioIdeGlobals.CONSOLE != None):

weioIdeGlobals.CONSOLE.send(json.dumps(data))

print "ERR ",self.errObject

ioloop.IOLoop.instance().remove_handler(self.weioPipe.stderr.fileno())

self.stderrHandlerIsLive = False