authority

authority_view

A non-owning reference to a valid authority.

Synopsis

Defined in header <boost/url/authority_view.hpp>

class authority_view

Member Functions

Name	Description
authority_view [constructor]	Constructor. — Construct from a string.
buffer	Return the complete authority.
data	Return a pointer to the first character.
empty	Return true if the authority is empty.
encoded_host	Return the host.
encoded_host_address	Return the host.
encoded_host_and_port	Return the host and port.
encoded_host_name	Return the host name.
encoded_password	Return the password.
encoded_user	Return the user.
encoded_userinfo	Return the userinfo.
has_password	Return true if a password is present.
has_port	Return true if a port is present.
has_userinfo	Return true if a userinfo is present.
host	Return the host.
host_address	Return the host.
host_ipv4_address	Return the host IPv4 address.
host_ipv6_address	Return the host IPv6 address.
host_ipvfuture	Return the host IPvFuture address.
host_name	Return the host name.
host_type	Return the host type.
operator=	Assignment.
password	Return the password.
port	Return the port.
port_number	Return the port.
size	Return the number of characters in the authority.
user	Return the user.
userinfo	Return the userinfo.
~authority_view [destructor]	Destructor.

Friends

Name	Description
operator<<	Format the encoded authority to the output stream.

Objects of this type represent valid authority strings constructed from a parsed, external character buffer whose storage is managed by the caller. That is, it acts like a string_view in terms of ownership. The caller is responsible for ensuring that the lifetime of the underlying character buffer extends until it is no longer referenced.

Example 1

Construction from a string parses the input as an authority and throws an exception on error. Upon success, the constructed object points to the passed character buffer; ownership is not transferred.

authority_view a( "user:pass@www.example.com:8080" );

Example 2

The parsing function parse_authority returns a result containing either a valid authority_view upon succcess, otherwise it contain an error. The error can be converted to an exception by the caller if desired:

result< authority_view > rv = parse_authority( "user:pass@www.example.com:8080" );

BNF

authority     = [ userinfo "@" ] host [ ":" port ]

userinfo      = user [ ":" [ password ] ]

user          = *( unreserved / pct-encoded / sub-delims )
password      = *( unreserved / pct-encoded / sub-delims / ":" )

host          = IP-literal / IPv4address / reg-name

port          = *DIGIT

Specification

3.2. Authority (rfc3986)