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#!/usr/bin/env python3
"""
Scrape a webpage for emails or links, or both.
"""
import argparse
import re
import sys
import urllib.request
def get(url):
page = urllib.request.urlopen(url)
byts = page.read()
s = byts.decode("utf8")
page.close()
return s
def extract_links(content):
return re.findall('"((http|ftp)s?://.*?)"', content)
def extract_emails(content):
return re.findall("([\w\.,]+@[\w\.,]+\.\w+)", content)
if __name__ == "__main__":
cli = argparse.ArgumentParser(description=__doc__)
cli.add_argument("url", metavar="URL", type=str, help="url to fetch")
cli.add_argument("-e", "--emails", action="store_true", help="get emails")
cli.add_argument("-l", "--links", action="store_true", help="get links")
args = cli.parse_args()
if not (args.emails or args.links):
cli.error("must specify either -e or -l")
content = get(args.url)
if args.emails:
emails = extract_emails(content)
if len(emails) == 0:
print("found no emails")
else:
print("found {} emails:".format(len(emails)))
for email in emails:
print(" {}".format(email))
if args.links:
links = extract_links(content)
if len(links) == 0:
print("found no links")
else:
print("found {} links:".format(len(links)))
for link in links:
print(" {}".format(link[0]))
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