1 files changed, 35 insertions, 0 deletions
diff --git a/delta.py b/delta.py
new file mode 100755
index 0000000..c47f466
--- /dev/null
+++ b/delta.py
@@ -0,0 +1,35 @@
+#!/usr/bin/env python
+
+import sys
+import os.path
+import difflib
+import tempfile
+import requests
+from hashlib import sha1
+from html2text import html2text
+
+
+def main(url):
+    old_hash = ''
+    changed  = True
+
+    html = requests.get(url).text
+    text = html2text(html).encode('utf-8')
+    new_hash = sha1(text).hexdigest()
+
+    urlhash  = sha1(url).hexdigest()
+    tmp_path = os.path.join(tempfile.gettempdir(), urlhash)
+
+    if os.path.exists(tmp_path):
+        tmp_file = open(tmp_path, 'r')
+        old_hash = sha1(tmp_file.read()).hexdigest()
+        changed  = new_hash != old_hash
+
+    tmp_file = open(tmp_path, 'w')
+    tmp_file.write(text)
+    return changed
+
+
+if __name__ == '__main__':
+    changed = main(sys.argv[1])
+    sys.exit(0 if changed else 1)