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import re, signal, traceback, typing, urllib.error, urllib.parse
import json as _json
import bs4, requests
from src import utils
USER_AGENT = ("Mozilla/5.0 (Windows NT 6.1; WOW64) AppleWebKit/537.36 "
"(KHTML, like Gecko) Chrome/49.0.2623.87 Safari/537.36")
REGEX_HTTP = re.compile("https?://", re.I)
RESPONSE_MAX = (1024*1024)*100
SOUP_CONTENT_TYPES = ["text/html", "text/xml", "application/xml"]
class HTTPException(Exception):
pass
class HTTPTimeoutException(HTTPException):
pass
class HTTPParsingException(HTTPException):
pass
def throw_timeout():
raise HTTPTimeoutException()
class Response(object):
def __init__(self, code: int, data: typing.Any,
headers: typing.Dict[str, str]):
self.code = code
self.data = data
self.headers = headers
def request(url: str, method: str="GET", get_params: dict={},
post_data: typing.Any=None, headers: dict={},
json_data: typing.Any=None, code: bool=False, json: bool=False,
soup: bool=False, parser: str="lxml", fallback_encoding: str="utf8",
) -> Response:
if not urllib.parse.urlparse(url).scheme:
url = "http://%s" % url
if not "Accept-Language" in headers:
headers["Accept-Language"] = "en-GB"
if not "User-Agent" in headers:
headers["User-Agent"] = USER_AGENT
signal.signal(signal.SIGALRM, lambda _1, _2: throw_timeout())
signal.alarm(5)
try:
response = requests.request(
method.upper(),
url,
headers=headers,
params=get_params,
data=post_data,
json=json_data,
stream=True
)
response_content = response.raw.read(RESPONSE_MAX, decode_content=True)
except TimeoutError:
raise HTTPTimeoutException()
finally:
signal.signal(signal.SIGALRM, signal.SIG_IGN)
response_headers = utils.CaseInsensitiveDict(dict(response.headers))
content_type = response.headers["Content-Type"].split(";", 1)[0]
if soup and content_type in SOUP_CONTENT_TYPES:
soup = bs4.BeautifulSoup(response_content, parser)
return Response(response.status_code, soup, response_headers)
data = response_content.decode(response.encoding or fallback_encoding)
if json and data:
try:
return Response(response.status_code, _json.loads(data),
response_headers)
except _json.decoder.JSONDecodeError as e:
raise HTTPParsingException(str(e))
return Response(response.status_code, data, response_headers)
def strip_html(s: str) -> str:
return bs4.BeautifulSoup(s, "lxml").get_text()
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