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utils.py
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utils.py
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import logging
import shutil
import os
from logging.handlers import RotatingFileHandler
from functools import update_wrapper
from datetime import timedelta
import chardet
from flask import make_response, request, current_app
def addFileLogger(logger_object, log_name, level=2):
rotating_file_handler = RotatingFileHandler(log_name)
rotating_file_handler.setFormatter(logging.Formatter(
'%(asctime)s %(levelname)s: %(message)s '
'[in %(pathname)s:%(lineno)d]'
))
logger_object.addHandler(rotating_file_handler)
logger_object.level = level
def convert_file_to_unicode(filepath):
utext = None
with open(filepath, 'r') as fp:
text = fp.read()
encoding = chardet.detect(text)['encoding']
utext = text.decode(encoding)
if encoding.lower() == 'utf-8' or encoding.lower() == 'utf8':
return
shutil.copy(filepath, filepath + ".bu")
try:
with open(filepath, 'w') as fp:
fp.write(utext.encode('utf8'))
except:
print "Warning: Error during conversion to unicode!"
os.remove(filepath)
shutil.copy(filepath + ".bu", filepath)
finally:
os.remove(filepath + ".bu")
def crossdomain(origin=None, methods=None, headers=None,
max_age=21600, attach_to_all=True,
automatic_options=True):
if methods is not None:
methods = ', '.join(sorted(x.upper() for x in methods))
if headers is not None and not isinstance(headers, basestring):
headers = ', '.join(x.upper() for x in headers)
if not isinstance(origin, basestring):
origin = ', '.join(origin)
if isinstance(max_age, timedelta):
max_age = max_age.total_seconds()
def get_methods():
if methods is not None:
return methods
options_resp = current_app.make_default_options_response()
return options_resp.headers['allow']
def decorator(f):
def wrapped_function(*args, **kwargs):
if automatic_options and request.method == 'OPTIONS':
resp = current_app.make_default_options_response()
else:
resp = make_response(f(*args, **kwargs))
if not attach_to_all and request.method != 'OPTIONS':
return resp
h = resp.headers
h['Access-Control-Allow-Origin'] = origin
h['Access-Control-Allow-Methods'] = get_methods()
h['Access-Control-Max-Age'] = str(max_age)
if headers is not None:
h['Access-Control-Allow-Headers'] = headers
return resp
f.provide_automatic_options = False
return update_wrapper(wrapped_function, f)
return decorator