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helpers_web.py
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"""
URL ASSUMPTIONS
If you don't know is website use https or http protocol, it's better to use '//'.
An optional authority component preceded by two slashes (//),
ASSUMPTIONS
a folder has no dot
a file has a dot for the extension, or a leading dot
https://docs.python.org/3/library/urllib.parse.html
WP API
https://github.com/MickaelWalter/wp-json-scraper
"""
from distutils.command.config import config
from posixpath import join
from urllib import response
from urllib.parse import urlparse, urljoin, parse_qs
import os
import urllib.request
import urllib.parse
import ssl
import requests
import time
import pathlib
import datetime
from PIL import Image
import pillow_avif
from natsort import natsorted, ns
import copy
import shutil
import helpers_web as wh
#-----------------------------------------
#
#-----------------------------------------
# init the colorama module
import colorama
colorama.init()
GREEN = colorama.Fore.GREEN
GRAY = colorama.Fore.LIGHTBLACK_EX
RESET = colorama.Fore.RESET
YELLOW = colorama.Fore.YELLOW
RED = colorama.Fore.RED
CYAN = colorama.Fore.CYAN
MAGENTA = colorama.Fore.MAGENTA
BLUE = colorama.Fore.BLUE
#-----------------------------------------
# dq
#-----------------------------------------
_no_esc = lambda s : s.replace('\/', '/')
_wrap = lambda s, delim : delim if not s else delim + str(_no_esc(s)).strip() + delim
def dq(s=""):
return _wrap(s, delim="\"")
def sq(s=""):
return _wrap(s, delim="\'")
def pa(s=""):
return "(" + str(_no_esc(s)).strip() + ")"
def qu(s=""):
return _wrap(s, delim=""")
_wrap_raw = lambda s, delim : delim + str(s) + delim
def dq_raw(s=""):
return _wrap_raw(s, delim="\"")
def dq3_raw(s=""):
return _wrap_raw(s, delim="\"\"\"")
#-----------------------------------------
#
#-----------------------------------------
def vt_b(b_val):
return (f'{GREEN}+T' if b_val else f'{RED}-F') + RESET
#return (GREEN if b_val else RED) + str(int(b_val)) + RESET
def vt_http_status_code(code): # http status
return (GREEN if code < 400 else RED) + str(code) + RESET
#return (GREEN if b_val else RED) + str(int(b_val)) + RESET
def _saved_percent(size_orig, size_new):
if size_orig <= 0:
return 0
perc = 100 - (size_new/size_orig*100)
return perc
def saved_percent_string(size_orig, size_new, vt=""):
pct = _saved_percent(size_orig, size_new)
return "{}{:+.1f}%{}".format(vt, pct, RESET)
def vt_saved_percent_string(size_orig, size_new):
pct = _saved_percent(size_orig, size_new)
vt = RED if pct < 0 else GREEN
return saved_percent_string(size_orig, size_new, vt=vt)
#-----------------------------------------
#
#-----------------------------------------
def url_exists(url):
code = get_status_code(url)
exists = True if code and code < 400 else False
print("url_exists:", exists, "|", code, "|", url)
return exists
# https://stackoverflow.com/questions/5074803/retrieving-parameters-from-a-url
def url_has_ver(url):
try:
value = parse_qs(urlparse(url).query)['ver'][0]
ret = True
except:
#print(f"{RED}[!] url_has_ver: {url} {RESET}")
ret = False
#print("url_has_ver:", GREEN if ret else RED, ret, RESET, url)
return ret
def url_get_ver(url):
# ver= # ?ver=
try:
value = parse_qs(urlparse(url).query)['ver'][0]
print("url_get_ver:", value)
return value
except:
print(f"{RED}[!] url_get_ver: {url} {RESET}")
return ""
#-----------------------------------------
#
#-----------------------------------------
def url_to_filename(url):
return strip_trailing_slash(''.join(filter(str.isalnum, url)))
#-----------------------------------------
#
#-----------------------------------------
def url_is_valid(url): # need by crawler
"""
Checks whether `url` is a valid URL.
needs minimum //netloc to start with
"""
parsed = urlparse(url)
ret = bool(parsed.netloc) and (parsed.scheme.startswith('http') or url.strip().startswith('//'))
#print("url_is_valid:", ret, url )
return ret
# # def is_remote(url):
# # return url.strip().startswith('http')
# # def is_local(url):
# # return not is_remote(url)
def url_split(url):
vb = False
if vb: print("url_split:", CYAN, dq(url), RESET, GRAY)
url = url.strip() if url else url
exts = ["html", "htm", "php", "php3", "js", "shtm", "shtml", "asp", "cfm", "cfml"]
root = '/'
protocol = None
loc = None
path = None
if not url:
path = root
else:
# protocol
if '://' in url:
subs = url.split('://')
protocol = subs[0]
url = subs[1]
elif url.startswith('//'):
#protocol = 'https'
url = url.lstrip('//')
url = url.lstrip('/')
# loc
subs = url.split('/')
if subs:
if '.' in subs[0]:
parts = subs[0].split('.')
if parts:
ext = parts[-1].lower()
if not ext in exts:
loc = subs[0]
path = root + '/'.join(subs[1:])
else:
path = root + '/'.join(subs)
else:
pass
print(RED, "WARN no parts .:", subs[0], RESET)
_sleep()
else:
path = root + url
else:
pass
print(RED, "WARN no subs /:", url, RESET)
_sleep()
if vb:
print("\t", "protocol:", protocol)
print("\t", "loc :", loc)
print("\t", "path :", path)
print(RESET, end='')
return protocol, loc, path
"""
url_is_absolute: False | ''
url_is_absolute: False | index.html
url_is_absolute: False | path/image.jpg
url_is_absolute: False | /path/image.jpg
url_is_absolute: True | karlsruhe.digital
url_is_absolute: True | karlsruhe.digital/path/image.jpg
url_is_absolute: True | www.karlsruhe.digital/path/image.jpg
url_is_absolute: True | //www.karlsruhe.digital/path/image.jpg
url_is_absolute: True | http://www.karlsruhe.digital/path/image.jpg
url_is_absolute: True | https://www.karlsruhe.digital/path/image.jpg
url_is_absolute: False | xxxxx://www.karlsruhe.digital/path/image.jpg
url_is_absolute: True | facebook.de/test.html
url_is_absolute: True | http://facebook.de/test.html
url_is_absolute: True | http://facebook.de
url_is_absolute: True | facebook.de
url_is_absolute: False | facebook
"""
def url_is_absolute(url): # absolute URL (that is, it starts with // or scheme://)
# url = url.strip()
# exts = ["html", "htm", "php", "php3", "js", "shtm", "shtml", "asp", "cfm", "cfml"]
# ret = False
# if url.startswith('http') or url.startswith('//'):
# ret = True
# else:
# subs = url.split('/')
# if subs and '.' in subs[0]:
# parts = subs[0].split('.')
# if parts and not parts[-1].lower() in exts:
# ret = True
# # # parsed = urlparse(url)
# # # ret = bool(parsed.netloc) and (parsed.scheme.startswith('http') or url.strip().startswith('//')) # // WP specific?
# print("url_is_absolute:", ret, "|", url )
# return ret
protocol, loc, path = url_split(url)
# err check
if protocol:
assert loc
assert path
elif loc:
assert path
else:
assert path
ret = bool(loc)
print("url_is_absolute:", GREEN if ret else YELLOW, ret, RESET, "|", url )
return ret
def url_is_relative(url):
ret = not url_is_absolute(url)
#print("url_is_relative:", ret, "|", url)
return ret
# # def is_relative_to_base(url, base):
# # return not url_is_absolute(url)
# https://stackoverflow.com/questions/10772503/check-url-is-a-file-or-directory
"""
>> import tldextract
>> tldextract.extract("http://lol1.domain.com:8888/some/page"
ExtractResult(subdomain='lol1', domain='domain', suffix='com')
>> tldextract.extract("http://sub.lol1.domain.com:8888/some/page"
ExtractResult(subdomain='sub.lol1', domain='domain', suffix='com')
>> urlparse.urlparse("http://sub.lol1.domain.com:8888/some/page")
ParseResult(scheme='http', netloc='sub.lol1.domain.com:8888', path='/some/page', params='', query='', fragment='')
"""
import tldextract
def url_is_internal(url, base):
_, loc_url, _ = url_split(url)
_, loc_base, _ = url_split(base)
assert loc_base, "loc_base is None!!!"
ret = False
if not loc_url: # local url
ret = True
else:
tld_url = tldextract.extract(url)
tld_base = tldextract.extract(base)
ret = (tld_url.domain == tld_base.domain and tld_url.suffix == tld_base.suffix)
#print("\n", GREEN, tld_url, GRAY, tld_base, RESET)
#print("url_is_internal:", YELLOW, int(ret), GREEN, dq(url), GRAY, dq(base), RESET)
return ret
def url_is_external(url, base):
# tld_url = tldextract.extract(url)
# tld_base = tldextract.extract(base)
# assert tld_base, "loc_base is None"
# if not tld_url:
# ret = False
# else:
# ret = (tld_url != tld_base)
ret = not url_is_internal(url, base)
#print("url_is_external:", YELLOW, int(ret), GREEN, dq(url), GRAY, dq(base), RESET)
return ret
"""
urlparse("scheme://netloc/path;parameters?query#fragment")
ParseResult(scheme='scheme', netloc='netloc', path='/path;parameters', params='',
query='query', fragment='fragment')
urlparse("http://docs.python.org:80/3/library/urllib.parse.html?highlight=params#url-parsing")
ParseResult(
scheme = 'http',
netloc = 'docs.python.org:80',
path = '/3/library/urllib.parse.html',
params = '',
query = 'highlight=params',
fragment= 'url-parsing'
)
"""
def _sleep(secs=33):
print(RED, "DEBUG _sleep:", secs, RESET)
time.sleep(secs)
def url_has_same_netloc(url, base):
_, loc_url, _ = url_split(url)
_, loc_base, _ = url_split(base)
# # # if not loc_url and loc_base:
# # # return True # consider same as url is local
# # # elif not loc_url and not loc_base:
# # # return True
if not loc_url or not loc_base:
return True
#print("url_has_same_netloc: loc_base", loc_base, "loc_url", loc_url)
return loc_base in loc_url
#https://stackoverflow.com/questions/6690739/high-performance-fuzzy-string-comparison-in-python-use-levenshtein-or-difflib
from difflib import SequenceMatcher
def similar(a, b):
return SequenceMatcher(None, a, b).ratio() #+ 0..1
#https://stackoverflow.com/questions/17388213/find-the-similarity-metric-between-two-strings
"""
>>> import jellyfish
>>> jellyfish.levenshtein_distance(u'jellyfish', u'smellyfish')
2
>>> jellyfish.jaro_distance(u'jellyfish', u'smellyfish')
0.89629629629629637
>>> jellyfish.damerau_levenshtein_distance(u'jellyfish', u'jellyfihs')
"""
# may just be a missing / for a folder
# https://stackoverflow.com/questions/16603282/how-to-compare-each-item-in-a-list-with-the-rest-only-once
def links_remove_similar(links):
links = links_make_unique(links)
# those have just a forgotten trailing slash
def is_similar_by_missing_trailing_slash(a,b):
a = a.strip()
b = b.strip()
ret = None
if len(a)+1 == len(b):
if a + '/' == b:
ret = a
elif len(b)+1 == len(a):
if b + '/' == a:
ret = b
if ret:
#print("\t", RED, "is_similar_by_missing_trailing_slash:", ret, "a,b:", a, b, RESET)
pass
return ret
excludes = []
import itertools
for a, b in itertools.combinations(links, 2):
res = is_similar_by_missing_trailing_slash(a, b)
if res:
excludes.append(res) # the smaller one to be deleted
excludes = links_make_unique(excludes)
if excludes:
#print("links_remove_similar:", YELLOW, "excludes:", *excludes, RESET, sep="\n\t")
pass
new_links = [link for link in links if link not in excludes]
#print("\t", GREEN, "new_links:", *new_links, RESET, sep="\n\t")
return new_links
# def links_remove_similar(links, base, thresh=0.8):
# pass
def link_make_absolute(link, base):
protocol_url, loc_url, path_url = url_split(link)
protocol_base, loc_base, path_base = url_split(base)
if not loc_base:
print(RED, "link_make_absolute:", "not loc_base", RESET)
assert False
exit(1)
if not protocol_url:
if protocol_base:
protocol_url = protocol_base
else:
protocol_url = "https"
if not loc_url:
loc_url = loc_base
ret = protocol_url + "://" + loc_url + path_url
#print("link_make_absolute:", link, "-->", YELLOW, ret, RESET)
return ret
# # def link_make_absolute_OLD(link, base):
# # if url_is_relative(link):
# # link = add_trailing_slash(base) + strip_leading_slash(link) # base/link
# # return link
# # def try_link_make_local_OLD(url, base):
# # if url_has_same_netloc(url, base):
# # ret = url
# # ret = url_path_lstrip_double_slash(ret) # "//media.ka.de"
# # ret = url_path_lstrip_slash(ret) # "/media.ka.de"
# # else:
# # ret = url
# # print("try_link_make_local_OLD:", url, "-->", ret)
# # return ret
def try_link_make_local(url, base):
ret = url
if url_is_internal(url, base):
_, loc_url, path_url = url_split(url)
ret = path_url
ret = url_path_lstrip_slash(ret) # "/media.ka.de"
else:
print(RED, "try_link_make_local:", "not internal: {}".format(url), RESET)
assert False
print("try_link_make_local:", url, "-->", ret)
return ret
def links_make_absolute(links, base):
if not links: return links
ret = []
for link in links:
ret.append(link_make_absolute(link, base))
return ret
def links_remove_excludes(links, excludes, pre=""):
if not links: return links
print(pre, "links_remove_excludes:", RED, excludes, RESET)
excludes = list(excludes)
return [link for link in links if not any(exclude.strip() in link for exclude in excludes)]
###return links_remove_invalids(links, excludes)
def links_remove_invalids(links, invalids):
if not links: return links
print("links_remove_invalids:", MAGENTA, invalids, RESET)
# TODO is same as links_remove_excludes???????????????????
#print(YELLOW, *links, RESET, sep="\n\t")
ret = []
for link in links:
b_is_valid = True
for invalid in invalids:
if invalid in link:
b_is_valid = False
print("\t", RED, "invalid:", link, RESET, sep="\n\t")
break
if b_is_valid:
ret.append(link)
#print(GREEN, *ret, RESET, sep="\n\t")
return ret
def links_remove_nones(links):
if not links: return links
return [u for u in links if u]
def links_remove_comments(links, delim='#'):
if not links: return links
return [u for u in links if not u.startswith(delim)]
def links_remove_externals(links, base):
if not links: return links
return [u for u in links if not url_is_external(u, base)]
def links_remove_folders(links):
if not links: return links
return [u for u in links if not u.strip().endswith('/')]
def links_strip_query_and_fragment(links):
if not links: return links
return [strip_query_and_fragment(u) for u in links]
def links_strip_trailing_slash(links):
if not links: return links
return [strip_trailing_slash(u) for u in links]
def links_make_relative(links, base):
if not links: return links
len_prev = len(links)
links = links_remove_externals(links, base) # new
print(YELLOW, "links_make_relative: now removes externals first:", len_prev - len(links), RESET)
return [try_link_make_local(u, base) for u in links]
def links_make_unique(links):
if not links: return links
return list(set(links))
def links_strip(links):
if not links: return links
return [u.strip() for u in links]
def __was_replaced(link, replacements):
link = link.strip()
for rep in replacements:
assert len(rep) >= 2
new_link = link.replace(rep[0], rep[1])
if new_link != link:
print("\t", "replaced:", RED, rep[0], GREEN, rep[1], GRAY, dq(link), "-->", YELLOW, dq(new_link), RESET)
return True, new_link
return False, link
def link_replace(link, replacements):
if not link:
return link
else:
b_replaced, new_link = __was_replaced(link, replacements)
return new_link
def links_replace(links, replacements):
if not links: return links
# # # def was_replaced(link, replacements):
# # # link = link.strip()
# # # for rep in replacements:
# # # assert len(rep) >= 2
# # # new_link = link.replace(rep[0], rep[1])
# # # if new_link != link:
# # # #print("\t", "replaced:", YELLOW, dq(new_link), RESET)
# # # return True, new_link
# # # return False, link
ret = []
for link in links:
b_replaced, new_link = __was_replaced(link, replacements)
if not new_link in ret:
#print("\t", "adding :", GREEN, dq(new_link), RESET)
ret.append(new_link)
return ret
# # def link_replace_http(link):
# # new_link = link.replace("http://", "https://")
# # if new_link != link:
# # print("\t", YELLOW, "link_replace_http:", RED, link, GREEN, new_link, RESET)
# # return new_link
def link_replace_pair(link, fr, to):
new_link = link.replace(fr, to)
if new_link != link:
print("\t", YELLOW, "link_replace:", RED, link, GREEN, new_link, RESET)
return new_link
def links_sanitize(links):
if not links: return links
links = links_remove_comments(links, delim='#')
links = links_remove_similar(links)
links = links_remove_nones(links)
links = links_strip(links)
links = links_make_unique(links)
#links = sorted(links)
links = natsorted(links)
return links
# def links_make_absolute_internals_only(links, base):
# links = links_make_absolute(links, base)
# links = links_remove_externals(links, base)
# links = links_make_unique(links)
# ####links = links_strip_query_and_fragment(links)
# links = sorted(links)
# return links
def url_path(url, char_lstrip=''): # '/'
p = urlparse(url.strip()).path # '/3/library/urllib.parse.html'
if char_lstrip:
p = p.lstrip(char_lstrip)
return p
# parsed = urlparse('http://netloc/path;parameters?query=argument#fragment')
# ParseResult(scheme='http', netloc='netloc', path='/path', params='parameters', query='query=argument', fragment='fragment')
def url_ppqf(url):
parsed = urlparse(url)
ret = ""
ret += parsed.path if parsed.path else '' # ---> may have /path
#ret += ';' + parsed.parameters if parsed.parameters else ''
ret += '?' + parsed.query if parsed.query else ''
ret += '#' + parsed.fragment if parsed.fragment else ''
return ret
def url_qf(url):
parsed = urlparse(url)
ret = ""
ret += '?' + parsed.query if parsed.query else ''
ret += '#' + parsed.fragment if parsed.fragment else ''
return ret
def url_netloc(url):
loc = urlparse(url.strip()).netloc
return loc
def url_has_fragment(url):
f = urlparse(url.strip()).fragment
ret = True if f else False
print("url_has_fragment:", ret, url)
return ret
def url_scheme(url): # '/'
return urlparse(url.strip()).scheme
def url_path_lstrip_slash(url): # '/'
return url_path(url, char_lstrip='/')
def url_path_lstrip_double_slash(url): # '/'
return url_path(url, char_lstrip='//')
def file_path_relative(filepath, project_folder):
ret = to_posix(os.path.relpath(filepath, project_folder))
print("file_path_relative:", GRAY, filepath, CYAN, "-->", GRAY, ret, RESET)
return ret
def url_path_relative(url, base):
assert url_has_same_netloc(url, base)
url = link_make_absolute(url, base)
ret = to_posix(os.path.relpath(url, base))
print(YELLOW, "url_path_relative: UNTESTED:", ret, RESET)
return ret
#-----------------------------------------
#
#-----------------------------------------
def strip_protocol(url):
if not url:
return url
new_url = url
new_url = new_url.lstrip("https://")
new_url = new_url.lstrip("http://")
new_url = new_url.lstrip("://")
new_url = new_url.lstrip("//")
new_url = new_url.lstrip('/')
#print("strip_protocols:", url, "-->", new_url)
return new_url
# -----------------------------------------
# based on ASSUMPTION that a file has a dot
# -----------------------------------------
def _has_a_dot(url):
return '.' in url
def url_is_assumed_file(url):
#print(url)
#url = strip_protocol(url)
if url == None:
return False
elif url.endswith('/'):
return False
url = url_path(url)
###url = strip_query_and_fragment(url)
url = strip_trailing_slash(url)
return _has_a_dot(url.split('/')[-1]) # last part
def url_is_assumed_folder(url):
#print(url)
if url == None:
return False
url = url_path(url)
if not url:
return True
elif url.endswith('/'):
return True
return not url_is_assumed_file(url)
#-----------------------------------------
#
#-----------------------------------------
def has_trailing(url, s):
return url.endswith(s)
def has_leading(url, s):
return url.startswith(s)
def has_trailing_slash(url):
return has_trailing(url.strip(), '/')
def has_no_trailing_slash(url):
return not has_trailing_slash(url)
def has_leading_slash(url):
return has_leading(url.strip(), '/')
def add_leading_slash(url):
url = url.strip().lstrip('/')
url = '/' + url
return url
def strip_leading_slash(url):
return url.strip().lstrip('/')
def strip_trailing_slash(url):
return url.strip().rstrip('/')
def strip_tail(url, delim):
if delim in url:
url = url.split(delim)[0]
#print("--> strip_tail:", url)
return url
# https://en.wikipedia.org/wiki/URI_fragment
# scheme://netloc/path;parameters?query#fragment
def strip_query_and_fragment(url):
new_url = url
new_url = strip_tail(new_url, '?')
new_url = strip_tail(new_url, '#')
#print("strip_query_and_fragment", url, "-->", YELLOW, new_url, RESET)
return new_url
def strip_query(url):
parsed = urlparse(url)
new_url = url
new_url = strip_query_and_fragment(new_url)
if parsed.fragment:
new_url += "#" + parsed.fragment
#print("strip_query", url, "-->", YELLOW, new_url, RESET)
return new_url
def add_trailing(url, to_add):
return url.rstrip(to_add) + to_add
def add_trailing_slash(url):
return add_trailing(url, '/')
#-----------------------------------------
#
#-----------------------------------------
def make_dirs(the_path):
#print("make_dirs:", the_path)
dir = os.path.dirname(the_path)
if not os.path.exists(dir):
print("make_dirs: new:", dir)
os.makedirs(dir)
# debug ONLY
if dir.strip() in ("https", "sub_send"):
print(RED, "make_dirs: DEBUG found:", dir, RESET)
assert False
#-----------------------------------------
#
#-----------------------------------------
# # assume that there is no files without extension on the Internet and all paths are unix...!!!!!
# # Unlike some operating systems, UNIX doesn’t require a dot (.) in a filename;
# # in fact, you can use as many as you want.
# # For instance, the filenames pizza and this.is.a.mess are both legal.
# def is_directory(url):
# print("is_directory:", url)
# url = url.replace("\\\\", "/")
# url = url.replace("\\", "/")
# url = strip_trailing_slash(url)
# subs = url.split('/')
# print("is_directory:", "subs:", subs)
# last = subs[-1]
# return not '.' in subs[-1]
# def is_file(url):
# return not is_directory(url)
# # def is_online_file_and_exists(url):
# # t = get_mime_type(url) # None on a folder or if not exists
# # return True if t else False
# # ### I suppose you can add a slash to a URL and see what happens from there. That might get you the results you are looking for.
# # def is_online_directory_or_not_exists(url):
# # url = get_redirected_url(url)
# # t = get_mime_type(url)
# # ret = not is_online_file_and_exists(url)
# # print("is_online_directory_or_not_exists:", url, "-->", ret)
# # check_online_site_exists(url)
# # ###ret = was_redirected(url)
# # print()
# # return ret
#-----------------------------------------
#
#-----------------------------------------
headers = {
"User-Agent": "Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.77 Safari/537.36",
}
# # def get_content_type(url):
# # # seems to be incorrect many times
# # try:
# # r = requests.head(url, allow_redirects=True)
# # ### {'Date': 'Thu, 16 Jun 2022 16:03:31 GMT', 'Server': 'Apache/2.4.54 (Unix)', 'X-Powered-By': 'PHP/7.4.30', 'Allow': 'GET, POST, PUT', 'Cache-Control': 'no-store, no-cache, must-revalidate', 'Expires': 'Sat, 26 Jul 1997 05:00:00 GMT', 'Pragma': 'no-cache', 'Vary': 'User-Agent,Accept-Encoding', 'Content-Encoding': 'gzip', 'Content-Type': 'text/html; charset=UTF-8', 'Set-Cookie': 'PHPSESSID=8bss92l8og8s789ldp0p3u5uvr; path=/', 'Keep-Alive': 'timeout=3, max=100', 'Connection': 'Keep-Alive'}
# # return r.headers["content-type"] # "text/html; charset=UTF-8"
# # except Exception as e:
# # print(f"{RED}[!] {url} Exception: {e}{RESET}")
# # return None
# # def get_content_part(url, index):
# # ct = get_content_type(url)
# # if ct:
# # subs = ct.split(';') # "text/html; charset=UTF-8"
# # if len(subs) >= (index+1):
# # return subs[index]
# # return None
# # def get_encoding(url):
# # return get_content_part(url, 1)
from urllib.parse import urlsplit, urlunsplit, quote
def _iri_to_uri(iri, uq_scheme=False, uq_path=True, uq_query=False, uq_fragment=False, pre="\t"):
"""
Convert an IRI to a URI (Python 3).
"""
uri = ''
if isinstance(iri, str):
(scheme, netloc, path, query, fragment) = urlsplit(iri)
scheme = quote(scheme) if uq_scheme else scheme
netloc = netloc.encode('idna').decode('utf-8')
path = quote(path) if uq_path else path
query = quote(query) if uq_query else query # quote(query) # issue: this also changes ?p= /?p%3D1838
fragment = quote(fragment) if uq_fragment else fragment # quote(fragment)
uri = urlunsplit((scheme, netloc, path, query, fragment))
print(pre, YELLOW, "_iri_to_uri:", GRAY, iri, "-->", YELLOW, uri, RESET)
return uri
# https://stackoverflow.com/questions/4389572/how-to-fetch-a-non-ascii-url-with-urlopen
from unidecode import unidecode
def url_transliterate(url, uq_scheme=False, uq_path=True, uq_query=False, uq_fragment = False, pre="\t"):
"""
urllib.parse.unquote(url)
unidecode('kožušček')
"""
url_orig = copy.copy(url)
if isinstance(url, str):
(scheme, netloc, path, query, fragment) = urlsplit(url)
scheme = unidecode(scheme) if uq_scheme else scheme
netloc = netloc.encode('idna').decode('utf-8')
path = unidecode(path) if uq_path else path
query = unidecode(query) if uq_query else query # quote(query) # issue: this also changes ?p= /?p%3D1838
fragment = unidecode(fragment) if uq_fragment else fragment # quote(fragment)
url = urlunsplit((scheme, netloc, path, query, fragment))
# url = _iri_to_uri(url, uq_scheme=False, uq_path=True, uq_query=False, uq_fragment = False)
if url_orig != url:
print(pre, YELLOW, "url_transliterate:", GRAY, url_orig, "-->", YELLOW, url, RESET)
return url
# https://docs.python.org/3/library/urllib.request.html#module-urllib.response
# https://docs.python.org/3/library/email.message.html#email.message.EmailMessage
# https://www.w3.org/wiki/LinkHeader
def _get_request(url, method=None): # 'HEAD'
return urllib.request.Request(url, data=None, headers=headers, method=method) # user agent in headers
# https://stackoverflow.com/questions/33309914/retrieving-the-headers-of-a-file-resource-using-urllib-in-python-3
def get_response(url, timeout=10, method=None, pre="\t"): # 'HEAD'
url = _iri_to_uri(url) # , uq_scheme=False, uq_path=True, uq_query=False, uq_fragment=False) # beware of false umlauts!
#url_orig = url
########url = url_transliterate(url)
#print("get_response:", url_orig, "-->", YELLOW, url, RESET)
try:
req = _get_request(url, method=method)
context = ssl._create_unverified_context()
response = urllib.request.urlopen(req, context=context, timeout=timeout)
print(pre, vt_http_status_code(response.status), "|", vt_b(url != response.url), response.url)
return response
except urllib.error.HTTPError as error:
print(pre, f"{RED}[!] get_response: {url} HTTPError error.code: {error.code} --> None {RESET}") # error.code is status
return None
except urllib.error.URLError as error:
print(pre, f"{RED}[!] get_response: {url} URLError error.code: {error.code} --> None {RESET}")
return None
except Exception as e:
print(pre, f"{RED}[!] get_response: {url} Exception: {e} --> None {RESET}")
return None
def get_response_tries(url, timeout=10, method=None, tries=15, sleep_secs=2, pre="\t"):
for t in range(tries):
#print(pre, f"[{t}] get_response_tries: {GRAY}{url}", end= ' ')
print(pre, f"[{t}] ", end= '')
if response := get_response(url, timeout=timeout, method=method, pre=pre):
break
else:
print(YELLOW, end='')
response = None
time.sleep(sleep_secs)
### for />
print(RESET, end='')
return response
# def get_response_content(response):
# return response.read().decode('utf-8')
# def get_response_content_charset(response):
# return response.headers.get_content_charset()
# # def get_response_headers(response):
# # return response.headers
# def get_response_headers_as_string(response):
# return response.headers.as_string()
# def get_response_headers_tuples(response):
# return response.getheaders()
# def get_response_mime_type(response):
# return response.headers.get_content_type()
# def get_response_status(response):
# return response.status
def get_response_redirected_url(response):
return response.url
"""
Date: Tue, 21 Jun 2022 07:10:21 GMT