initial commit of single-page scraper

scraper.py

@@ -1 +1,64 @@
-#!/usr/bin/env python
+#!/usr/bin/env python
+
+import argparse
+import urllib.request
+from bs4 import BeautifulSoup
+
+# class WebScraper(object):
+
+#     def __init__(self, url):
+#         parser = argparse.ArgumentParser(description='Recursive web scraper')
+#         parser.add_argument("-s", "--site", required=True, help="Base url to scrape")
+        # self.args = parser.parse_args()
+
+
+def run(args=None):
+    source = get_source(args)
+    urls = find_links(args, source)
+    local_urls = parse_urls(args, urls)
+
+    print(local_urls)
+
+def get_source(args=None):
+    url = args.url
+    useragent = 'Mozilla/5.0 (X11; Linux x86_64; rv:61.0) Gecko/20100101 Firefox/61.0'
+    headers = {'User-Agent': useragent}
+    request = urllib.request.Request(url, headers=headers)
+    page = urllib.request.urlopen(request)
+    source = page.read()
+
+    return source
+
+
+def find_links(args=None, source=None):
+    soup = BeautifulSoup(source, 'html.parser')
+    links = soup.find_all('a')
+    hrefs = []
+
+    for link in links:
+        if link['href'].startswith('/'):
+            hrefs.append("".join([args.url, link['href']]))
+        else:
+            hrefs.append(link['href'])
+
+    return hrefs
+
+
+def parse_urls(args=None, urls=None):
+    local_urls = []
+
+    for url in urls:
+        if url.startswith(args.url):
+            local_urls.append(url)
+
+
+    return local_urls
+
+
+if __name__ == "__main__":
+
+    parser = argparse.ArgumentParser(description='Recursive web scraper')
+    parser.add_argument("-u", "--url", required=True, help="Base url to scrape")
+    args = parser.parse_args()
+    print(args)
+    run(args)