Fix emoji generator path in mkdocs.yml and add hex color validation in color_utils.py

Author: MatteoFasulo

mkdocs.yml

@@ -47,7 +47,7 @@ markdown_extensions:
   - attr_list
   - pymdownx.emoji:
       emoji_index: !!python/name:material.extensions.emoji.twemoji
-      emoji_generator: !!python/name:materialx.emoji.to_svg
+      emoji_generator: !!python/name:material.extensions.emoji.to_svg
 
 copyright: |
   &copy; 2023 <a href="https://github.com/MatteoFasulo" target="_blank" rel="noopener">Matteo Fasulo</a>

whisper_tiktok/utils/color_utils.py

@@ -1,6 +1,32 @@
+import re
+
+
+def validate_hex_color(color: str) -> bool:
+    """Validate if the input string is a valid hex color."""
+    pattern = r"^#?([0-9A-Fa-f]{3}|[0-9A-Fa-f]{6})$"
+    return bool(re.match(pattern, color))
+
+
 def rgb_to_bgr(rgb: str) -> str:
     """Convert RGB hex to BGR hex."""
+    # Validate input length
+    if len(rgb) != 6 and len(rgb) != 7:
+        raise ValueError("RGB hex must be 6 or 7 characters long (including #).")
+
+    # Validate hex characters
+    match = validate_hex_color(rgb)
+
+    if not match:
+        raise ValueError("Invalid RGB hex format.")
+
     if rgb.startswith("#"):
         rgb = rgb[1:]
     r, g, b = rgb[0:2], rgb[2:4], rgb[4:6]
     return b + g + r
+
+
+if __name__ == "__main__":
+    # Example usage
+    rgb_color = "#1A2B3C"
+    bgr_color = rgb_to_bgr(rgb_color)
+    print(f"RGB: {rgb_color} -> BGR: #{bgr_color}")