# -*- coding: utf-8 -*-
"""
hyper/common/util
~~~~~~~~~~~~~~~~~

General utility functions for use with hyper.
"""
from hyper.compat import unicode, bytes, imap

def to_bytestring(element):
    """
    Converts a single string to a bytestring, encoding via UTF-8 if needed.
    """
    if isinstance(element, unicode):
        return element.encode('utf-8')
    elif isinstance(element, bytes):
        return element
    else:
        raise ValueError("Non string type.")


def to_bytestring_tuple(*x):
    """
    Converts the given strings to a bytestring if necessary, returning a
    tuple. Uses ``to_bytestring``.
    """
    return tuple(imap(to_bytestring, x))

# -*- coding: utf-8 -*-
"""
hyper/common/util
~~~~~~~~~~~~~~~~~

General utility functions for use with hyper.
"""
from hyper.compat import unicode, bytes, imap

def to_bytestring(element):
    """
    Converts a single string to a bytestring, encoding via UTF-8 if needed.
    """
    if isinstance(element, unicode):
        return element.encode('utf-8')
    elif isinstance(element, bytes):
        return element
    else:
        raise ValueError("Non string type.")


def to_bytestring_tuple(*x):
    """
    Converts the given strings to a bytestring if necessary, returning a
    tuple. Uses ``to_bytestring``.
    """
    return tuple(imap(to_bytestring, x))

def to_host_port_tuple(host_port_str, default_port=80)
    """
    Converts the given string containing a host and possibly a port
    to a tuple.
    """
    try:
        host, port = host_port_str.rsplit(':', 1)
    except ValueError:
        host, port = host_port_str, default_port
    else:
        port = int(port)

    host = host.strip('[]')

    return tuple(host, port)

Add utility function to properly handle and split hostnames and IPs from ports that handles IPv6