Raku port of Perl's getprotobyname() and associated built-ins
# exports getprotobyname, getprotobyport, getprotoent, setprotoent, endprotoent
say getprotobynumber(0, :scalar); # "ip"
my @result_byname = getprotobyname("ip");
my @result_bynumber = getprotobynumber(@result_byname);
This module tries to mimic the behaviour of Perl's
getprotobyname and associated built-ins as closely as possible in the Raku Programing Language.
It exports by default:
endprotoent getprotobyname getprotobynumber getprotoent setprotoent
ORIGINAL PERL 5 DOCUMENTATION
These routines are the same as their counterparts in the system C
library. In list context, the return values from the various get
routines are as follows:
# 0 1 2 3 4
( $name, $aliases, $proto ) = getproto*
In scalar context, you get the name, unless the function was a
lookup by name, in which case you get the other thing, whatever it
is. (If the entry doesn't exist you get the undefined value.)
The "getprotobynumber" function, even though it only takes one
argument, has the precedence of a list operator, so beware:
getprotobynumber $number eq 'icmp' # WRONG
getprotobynumber($number eq 'icmp') # actually means this
getprotobynumber($number) eq 'icmp' # better this way
This module depends on the availability of POSIX semantics. This is generally not available on Windows, so this module will probably not work on Windows.
Elizabeth Mattijsen email@example.com
Source can be located at: https://github.com/lizmat/P5getprotobyname . Comments and Pull Requests are welcome.
COPYRIGHT AND LICENSE
Copyright 2018-2020 Elizabeth Mattijsen
Re-imagined from Perl as part of the CPAN Butterfly Plan.
This library is free software; you can redistribute it and/or modify it under the Artistic License 2.0.