def extract_urls(text, baseurl=None):
"""Extract urls from text
Args:
text: text to be extracted from
baseurl: base url reference for translating urls
Returns:
a list of urls
"""
tree = lxml.html.fromstring(text)
bases = tree.xpath("//base/@href")
if len(bases) > 0:
baseurl = absurl(bases[-1], baseurl)
urls = tree.xpath("//a/@href")
# translate to absurl and rm
urls = [absurl(_, baseurl) for _ in urls if _]
return [_ for _ in urls if _]
def test_absurl_relative(self):
# baseref is None
assert absurl("www.example.com") is None
assert absurl("/index.html") is None
assert absurl("//example.com") == "http://example.com/" # SPECIAL
# good baseref
assert absurl("www.example.com", "http://example.com/index.html") == "http://example.com/www.example.com"
assert absurl("/index.html", "http://example.com/help.html") == "http://example.com/index.html"
# bad baseref
assert absurl("/index.html", "www.example.com") is None
assert absurl("/index.html", "/index.html") is None
def test_absurl_absolute(self):
assert absurl("http://example.com/index.html?q=1") == "http://example.com/index.html?q=1"
# path-absent
assert absurl("http://example.com?q=1") == "http://example.com/?q=1"
# non-lower
assert absurl("HTTP://EXAMPLE.COM/INDEX.HTML?Q=1") == "http://example.com/INDEX.HTML?Q=1"
# remove-fragment
assert absurl("http://example.com/?q=1#footer") == "http://example.com/?q=1"
# not http/https/ftp
assert absurl("https://example.com/") == "https://example.com/"
assert absurl("ftp://*****:*****@example.com/") == "ftp://*****:*****@example.com/"
assert absurl("httpx://[email protected]/") is None
