Name

       lua-uri-_login - Lua URI library support for URIs containing usernames and passwords

Description

       The "uri._login" class is used as a base class by classes implementing URI schemes which
       can have a username and password in the userinfo part, separated by a colon.

       A URI of this type where the userinfo part contains more than one colon is considered
       invalid.  They must also have a non-empty host part.  The username and password are each
       optional.

       The current implementation requires subclasses to call this class's "init_base" method
       within their "init" method to do the extra validation.  This may change if I think of a
       better way of doing it.

Methods

       All the methods defined in lua-uri(3) are supported, in addition to the following:

       uri:username(...)
           Mutator for the username in the userinfo part.  Returns an optionally sets the first
           part of the userinfo, before the colon.  If there is no password then the username
           will be the whole of the userinfo part, and no colon will be present.

               local uri = assert(URI:new("ftp://host/path"))
               uri:username("fred")    -- ftp://fred@host/path
               uri:username(nil)       -- ftp://host/path

           Passing nil as the new username will also remove any password in the userinfo, since
           the password is expected to be meaningless without the username.

           The username is appropriately percent encoded and decoded by this method.

       uri:password(...)
           Mutator for the password part of the userinfo.  This will appear after a colon,
           whether or not there is a username.

           The password is appropriately percent encoded and decoded by this method.

               local password = uri:password()
               uri:password("secret")

References

       The main RFC for URIs ("RFC 3986") does not specify a syntax for the userinfo part of the
       authority, which is why the "username" and "password" methods are not provided in the
       generic "uri" class.  The use of the colon to separate these parts, and the escaping
       conventions, are instead derived from the older "RFC 1738 section 3.1", and the up to date
       telnet URI specification in "RFC 4248".