1 files changed, 39 insertions, 0 deletions
diff --git a/filters/email-libravatar-hover.py b/filters/email-libravatar-hover.py
new file mode 100755
index 0000000..352122b
--- /dev/null
+++ b/filters/email-libravatar-hover.py
@@ -0,0 +1,39 @@
+#!/usr/bin/env python3
+import sys
+import hashlib
+import codecs
+import os
+
+# Read and process the email address from command line arguments
+email = sys.argv[1].lower().strip()
+if email[0] == '<':
+    email = email[1:]
+if email[-1] == '>':
+    email = email[:-1]
+
+# Read the page argument (not used in this script but passed for compatibility)
+page = sys.argv[2]
+
+# Ensure correct encoding for stdin and stdout
+sys.stdin = codecs.getreader("utf-8")(sys.stdin.detach())
+sys.stdout = codecs.getwriter("utf-8")(sys.stdout.detach())
+
+# Calculate MD5 hash of the email
+md5 = hashlib.md5(email.encode()).hexdigest()
+
+# Read the standard input to get the buffer text
+buffer = sys.stdin.read().strip()
+
+# Determine the base URL based on HTTPS environment variable
+baseurl = "https://seccdn.libravatar.org/" if os.getenv("HTTPS") else "http://cdn.libravatar.org/"
+
+# Generate the HTML output with Libravatar images
+html_output = (
+    f"<span class='libravatar'>"
+    f"<img class='inline' src='{baseurl}avatar/{md5}?s=13&amp;d=retro' width='13' height='13' alt='Libravatar' />"
+    f"<img class='onhover' src='{baseurl}avatar/{md5}?s=128&amp;d=retro' width='128' height='128' alt='Libravatar' />"
+    f"</span> {buffer}"
+)
+
+# Print the HTML output
+print(html_output)