avatar.pl -- Avatar management

This module provides access to avatar handling.

 valid_gravatar(+URL) is semidet

True if URL is a real gravatar. We cache results for 300 seconds.

 random_avatar(-AvatarURL) is det

Generate a random avatar image url. This uses an arbitrary image from the virtual path icons(avatar). This predicate never replies with the same URL.

Arguments:

AvatarURL

- is a relative URL (does not include the host)

Errors

- resource_error(avatars) if no more avatars are available

 release_avatar(+URL) is det

Release the avatar to the pool of free avatars.

Undocumented predicates

The following predicates are exported, but not or incorrectly documented.

 clean_avatar_cache

 email_gravatar(Arg1, Arg2)