interprets character strings representing
addresses, returning binary information suitable
for use in system calls.
addresses and returns
strings representing the address in a
notation in common use:
<network number>.<host number>.<port number>
Trailing zero fields are suppressed, and each number is printed in hexadecimal,
in a format suitable for input to
Any fields lacking super-decimal digits will have a
An effort has been made to ensure that
be compatible with most formats in common use.
It will first separate an address into 1 to 3 fields using a single delimiter
Each field is then examined for byte separators (colon or period).
If there are byte separators, each subfield separated is taken to be
a small hexadecimal number, and the entirety is taken as a network-byte-ordered
quantity to be zero extended in the high-network-order bytes.
Next, the field is inspected for hyphens, in which case
the field is assumed to be a number in decimal notation
with hyphens separating the millennia.
Next, the field is assumed to be a number:
It is interpreted
as hexadecimal if there is a leading
(as in C),
(as in Mesa), or there are any super-decimal digits present.
It is interpreted as octal if there is a leading
and there are no super-octal digits.
Otherwise, it is converted as a decimal number.