#!/usr/bin/env perl
#ABSTRACT: look up common URI namespaces and prefixes
#PODNAME: rdfns

use strict;
use App::rdfns;
exit App::rdfns->new->run(@ARGV);

=head1 SYNOPSIS

    # look up namespaces in several formats
    $ rdfns foaf.xmlns foaf.n3 dbpedia.sparql foaf.json

    # look up a prefixed URI
    $ rdfns rdfs:seeAlso

    # look up multiple URIs at a given version
    $ rdfns 20111102 foaf,owl.ttl

    # lookup preferred prefix
    $ rdfns http://www.w3.org/2003/01/geo/wgs84_pos#
    
    # create short name of an URL
    $ rdfns http://purl.org/dc/elements/1.1/title

    # map prefix to preferred prefix
    $ rdfns wgs.prefix

    # show all options and some examples
    $ rdfns --help

    # show version
    $ rdfns --version

    # list available dates
    $ rdfns --dates

=head1 FORMATS

=over

=item ttl, n3, notation3

RDF/Turtle or Notation3 syntax:

    @prefix foaf: <http://xmlns.com/foaf/0.1/> .

=item sparql

SPARQL syntax:

    PREFIX foaf: <http://xmlns.com/foaf/0.1/>

=item txt

Tabulator-separated:

    foaf http://xmlns.com/foaf/0.1/

=item xmlns

XML namespace declaration

    xmlns:foaf="http://xmlns.com/foaf/0.1/"

=item json

JSON key-values, for instance for JSON-LD. Multiple entries are comma-separated.

    "foaf": "http://xmlns.com/foaf/0.1/"

=item beacon

BEACON format syntax:

    #PREFIX: http://xmlns.com/foaf/0.1/

=item prefix

Maps a prefix to its preferred form, this is the shortest and first in
alphabetical order. For instance C<rdfns wgs84.prefix> returns prefix C<geo>.

=back

=encoding utf8

=head1 SEE ALSO

This script is internally implemented in L<App::rdfns>, based on L<RDF::NS>.

=cut