package URI::WithBase;
use strict;
use vars qw($AUTOLOAD $VERSION);
use URI;
$VERSION = "2.19";
use overload '""' => "as_string", fallback => 1;
sub as_string;
sub new
{
my($class, $uri, $base) = @_;
my $ibase = $base;
if ($base && ref($base) && UNIVERSAL::isa($base, __PACKAGE__)) {
$base = $base->abs;
$ibase = $base->[0];
}
bless [URI->new($uri, $ibase), $base], $class;
}
sub new_abs
{
my $class = shift;
my $self = $class->new(@_);
$self->abs;
}
sub _init
{
my $class = shift;
my($str, $scheme) = @_;
bless [URI->new($str, $scheme), undef], $class;
}
sub eq
{
my($self, $other) = @_;
$other = $other->[0] if UNIVERSAL::isa($other, __PACKAGE__);
$self->[0]->eq($other);
}
sub AUTOLOAD
{
my $self = shift;
my $method = substr($AUTOLOAD, rindex($AUTOLOAD, '::')+2);
return if $method eq "DESTROY";
$self->[0]->$method(@_);
}
sub can { my $self = shift;
$self->SUPER::can(@_) || (
ref($self)
? $self->[0]->can(@_)
: undef
)
}
sub base {
my $self = shift;
my $base = $self->[1];
if (@_) { my $new_base = shift;
$new_base = $new_base->abs if ref($new_base) && $new_base->isa(__PACKAGE__);
$self->[1] = $new_base;
}
return unless defined wantarray;
if (defined($base) && !ref($base)) {
$base = ref($self)->new($base);
$self->[1] = $base unless @_;
}
$base;
}
sub clone
{
my $self = shift;
my $base = $self->[1];
$base = $base->clone if ref($base);
bless [$self->[0]->clone, $base], ref($self);
}
sub abs
{
my $self = shift;
my $base = shift || $self->base || return $self->clone;
$base = $base->as_string if ref($base);
bless [$self->[0]->abs($base, @_), $base], ref($self);
}
sub rel
{
my $self = shift;
my $base = shift || $self->base || return $self->clone;
$base = $base->as_string if ref($base);
bless [$self->[0]->rel($base, @_), $base], ref($self);
}
1;
__END__
=head1 NAME
URI::WithBase - URIs which remember their base
=head1 SYNOPSIS
$u1 = URI::WithBase->new($str, $base);
$u2 = $u1->abs;
$base = $u1->base;
$u1->base( $new_base )
=head1 DESCRIPTION
This module provides the C<URI::WithBase> class. Objects of this class
are like C<URI> objects, but can keep their base too. The base
represents the context where this URI was found and can be used to
absolutize or relativize the URI. All the methods described in L<URI>
are supported for C<URI::WithBase> objects.
The methods provided in addition to or modified from those of C<URI> are:
=over 4
=item $uri = URI::WithBase->new($str, [$base])
The constructor takes an optional base URI as the second argument.
If provided, this argument initializes the base attribute.
=item $uri->base( [$new_base] )
Can be used to get or set the value of the base attribute.
The return value, which is the old value, is a URI object or C<undef>.
=item $uri->abs( [$base_uri] )
The $base_uri argument is now made optional as the object carries its
base with it. A new object is returned even if $uri is already
absolute (while plain URI objects simply return themselves in
that case).
=item $uri->rel( [$base_uri] )
The $base_uri argument is now made optional as the object carries its
base with it. A new object is always returned.
=back
=head1 SEE ALSO
L<URI>
=head1 COPYRIGHT
Copyright 1998-2002 Gisle Aas.
=cut