""" defining regexes for regularly used concepts """

domain = r"[\w_\-\.]+\.[a-z]{2,}"
localname = r"@?[a-zA-Z_\-\.0-9]+"
strict_localname = r"@[a-zA-Z_\-\.0-9]+"
username = r"%s(@%s)?" % (localname, domain)
strict_username = r"\B%s(@%s)?\b" % (strict_localname, domain)
full_username = r"%s@%s\b" % (localname, domain)
# should match (BookWyrm/1.0.0; or (BookWyrm/99.1.2;
bookwyrm_user_agent = r"\(BookWyrm/[0-9]+\.[0-9]+\.[0-9]+;"