#Created by Ethan Chiu 10/25/16

from flask import Flask, render_template, request, jsonify

from pylint import lint

from astroid import MANAGER

from pylint.reporters.text import TextReporter

import fileinput

from tempfile import NamedTemporaryFile

from RestrictedPython import compile_restricted

from RestrictedPython import safe_builtins, utility_builtins, limited_builtins

from RestrictedPython.PrintCollector import PrintCollector

app = Flask(__name__)

app.debug = True

@app.route('/')

def hello_world():

return render_template("index.html")

@app.route('/check_code')

def check_code():

#Get textarea text from AJAX call

text = request.args.get('text')

#Writable Object that will be used as a TextReporter

class WritableObject(object):

def __init__(self):

self.content = []

def write(self, st):

self.content.append(st)

def read(self):

return self.content

#Remember that you can configure with a seperate file for more specific limitations => --rcfile=/path/to/config.file .

#See http://stackoverflow.com/a/10138997/4698963

#Add "--disable=R,C" to ARGs to print only errors & warnings

ARGS = ["-r","n", "--disable=R,C","--msg-template={path}:{line}: [{msg_id}({symbol}), {obj}] {msg}"]

pylint_output = WritableObject()

#Run Pylint, textreporter will redirect to writable object

with NamedTemporaryFile(mode="w+t") as t:

t.write(text)

t.seek(0)

lint.Run([t.name]+ARGS, reporter=TextReporter(pylint_output), exit=False)

pylint_list = pylint_output.content

#Clear Cache. VERY IMPORTANT! This will make sure that there's no funky issues. See: http://stackoverflow.com/questions/2028268/invoking-pylint-programmatically#comment5393474_4803466

MANAGER.astroid_cache.clear()

#Return json object, which is the pylint_output seperated by each newline

return jsonify(pylint_list)

'''

@app.route('/get_help')

def help_code():

'''

@app.route('/run_code')

def run_code():

#Get textarea text from AJAX call

text = request.args.get('text')

execglobals= {}

execglobals["_getiter_"] = lambda x: x.__iter__()

execglobals["_getitem_"] = lambda x, y: x.__getitem__(y)

execglobals["_print_"] = PrintCollector

#if safe_mode:

execglobals["__builtins__"] = {}

execglobals["__builtins__"].update(safe_builtins)

execglobals["__builtins__"].update(limited_builtins)

execglobals["__builtins__"].update(utility_builtins)

try:

byte_code = compile_restricted(text+"ff__result=printed",

filename='<inline code>',

mode='exec')

exec(byte_code, execglobals, None)

except SyntaxError as e:

pass

return jsonify(execglobals.get("ff__result", ""))

#return text

if __name__ == "__main__":

app.run()