* Update installation list with required modules

* Remove unused/doubled provided external perl moduls

1 files changed, 0 insertions, 1019 deletions

diff --git a/lib/URI.pm b/lib/URI.pm
deleted file mode 100644
index 5114ae4..0000000
--- a/lib/URI.pm
+++ /dev/null
@@ -1,1019 +0,0 @@
-package URI;
-
-use strict;
-use vars qw($VERSION);
-$VERSION = "1.35"; # $Date: 2004/11/05 14:17:33 $
-
-use vars qw($ABS_REMOTE_LEADING_DOTS $ABS_ALLOW_RELATIVE_SCHEME);
-
-my %implements;  # mapping from scheme to implementor class
-
-# Some "official" character classes
-
-use vars qw($reserved $mark $unreserved $uric $scheme_re);
-$reserved   = q(;/?:@&=+$,[]);
-$mark       = q(-_.!~*'());                                    #'; emacs
-$unreserved = "A-Za-z0-9\Q$mark\E";
-$uric       = quotemeta($reserved) . $unreserved . "%";
-
-$scheme_re  = '[a-zA-Z][a-zA-Z0-9.+\-]*';
-
-use Carp ();
-use URI::Escape ();
-
-use overload ('""'     => sub { ${$_[0]} },
-	      '=='     => sub { overload::StrVal($_[0]) eq
-                                overload::StrVal($_[1])
-                              },
-              fallback => 1,
-             );
-
-sub new
-{
-    my($class, $uri, $scheme) = @_;
-
-    $uri = defined ($uri) ? "$uri" : "";   # stringify
-    # Get rid of potential wrapping
-    $uri =~ s/^<(?:URL:)?(.*)>$/$1/;  # 
-    $uri =~ s/^"(.*)"$/$1/;
-    $uri =~ s/^\s+//;
-    $uri =~ s/\s+$//;
-
-    my $impclass;
-    if ($uri =~ m/^($scheme_re):/so) {
-	$scheme = $1;
-    }
-    else {
-	if (($impclass = ref($scheme))) {
-	    $scheme = $scheme->scheme;
-	}
-	elsif ($scheme && $scheme =~ m/^($scheme_re)(?::|$)/o) {
-	    $scheme = $1;
-        }
-    }
-    $impclass ||= implementor($scheme) ||
-	do {
-	    require URI::_foreign;
-	    $impclass = 'URI::_foreign';
-	};
-
-    return $impclass->_init($uri, $scheme);
-}
-
-
-sub new_abs
-{
-    my($class, $uri, $base) = @_;
-    $uri = $class->new($uri, $base);
-    $uri->abs($base);
-}
-
-
-sub _init
-{
-    my $class = shift;
-    my($str, $scheme) = @_;
-    $str =~ s/([^$uric\#])/$URI::Escape::escapes{$1}/go;
-    $str = "$scheme:$str" unless $str =~ /^$scheme_re:/o ||
-                                 $class->_no_scheme_ok;
-    my $self = bless \$str, $class;
-    $self;
-}
-
-
-sub implementor
-{
-    my($scheme, $impclass) = @_;
-    if (!$scheme || $scheme !~ /\A$scheme_re\z/o) {
-	require URI::_generic;
-	return "URI::_generic";
-    }
-
-    $scheme = lc($scheme);
-
-    if ($impclass) {
-	# Set the implementor class for a given scheme
-        my $old = $implements{$scheme};
-        $impclass->_init_implementor($scheme);
-        $implements{$scheme} = $impclass;
-        return $old;
-    }
-
-    my $ic = $implements{$scheme};
-    return $ic if $ic;
-
-    # scheme not yet known, look for internal or
-    # preloaded (with 'use') implementation
-    $ic = "URI::$scheme";  # default location
-
-    # turn scheme into a valid perl identifier by a simple tranformation...
-    $ic =~ s/\+/_P/g;
-    $ic =~ s/\./_O/g;
-    $ic =~ s/\-/_/g;
-
-    no strict 'refs';
-    # check we actually have one for the scheme:
-    unless (@{"${ic}::ISA"}) {
-        # Try to load it
-        eval "require $ic";
-        die $@ if $@ && $@ !~ /Can\'t locate.*in \@INC/;
-        return unless @{"${ic}::ISA"};
-    }
-
-    $ic->_init_implementor($scheme);
-    $implements{$scheme} = $ic;
-    $ic;
-}
-
-
-sub _init_implementor
-{
-    my($class, $scheme) = @_;
-    # Remember that one implementor class may actually
-    # serve to implement several URI schemes.
-}
-
-
-sub clone
-{
-    my $self = shift;
-    my $other = $$self;
-    bless \$other, ref $self;
-}
-
-
-sub _no_scheme_ok { 0 }
-
-sub _scheme
-{
-    my $self = shift;
-
-    unless (@_) {
-	return unless $$self =~ /^($scheme_re):/o;
-	return $1;
-    }
-
-    my $old;
-    my $new = shift;
-    if (defined($new) && length($new)) {
-	Carp::croak("Bad scheme '$new'") unless $new =~ /^$scheme_re$/o;
-	$old = $1 if $$self =~ s/^($scheme_re)://o;
-	my $newself = URI->new("$new:$$self");
-	$$self = $$newself; 
-	bless $self, ref($newself);
-    }
-    else {
-	if ($self->_no_scheme_ok) {
-	    $old = $1 if $$self =~ s/^($scheme_re)://o;
-	    Carp::carp("Oops, opaque part now look like scheme")
-		if $^W && $$self =~ m/^$scheme_re:/o
-	}
-	else {
-	    $old = $1 if $$self =~ m/^($scheme_re):/o;
-	}
-    }
-
-    return $old;
-}
-
-sub scheme
-{
-    my $scheme = shift->_scheme(@_);
-    return unless defined $scheme;
-    lc($scheme);
-}
-
-
-sub opaque
-{
-    my $self = shift;
-
-    unless (@_) {
-	$$self =~ /^(?:$scheme_re:)?([^\#]*)/o or die;
-	return $1;
-    }
-
-    $$self =~ /^($scheme_re:)?    # optional scheme
-	        ([^\#]*)          # opaque
-                (\#.*)?           # optional fragment
-              $/sx or die;
-
-    my $old_scheme = $1;
-    my $old_opaque = $2;
-    my $old_frag   = $3;
-
-    my $new_opaque = shift;
-    $new_opaque = "" unless defined $new_opaque;
-    $new_opaque =~ s/([^$uric])/$URI::Escape::escapes{$1}/go;
-
-    $$self = defined($old_scheme) ? $old_scheme : "";
-    $$self .= $new_opaque;
-    $$self .= $old_frag if defined $old_frag;
-
-    $old_opaque;
-}
-
-*path = \&opaque;  # alias
-
-
-sub fragment
-{
-    my $self = shift;
-    unless (@_) {
-	return unless $$self =~ /\#(.*)/s;
-	return $1;
-    }
-
-    my $old;
-    $old = $1 if $$self =~ s/\#(.*)//s;
-
-    my $new_frag = shift;
-    if (defined $new_frag) {
-	$new_frag =~ s/([^$uric])/$URI::Escape::escapes{$1}/go;
-	$$self .= "#$new_frag";
-    }
-    $old;
-}
-
-
-sub as_string
-{
-    my $self = shift;
-    $$self;
-}
-
-
-sub canonical
-{
-    # Make sure scheme is lowercased, that we don't escape unreserved chars,
-    # and that we use upcase escape sequences.
-
-    my $self = shift;
-    my $scheme = $self->_scheme || "";
-    my $uc_scheme = $scheme =~ /[A-Z]/;
-    my $esc = $$self =~ /%[a-fA-F0-9]{2}/;
-    return $self unless $uc_scheme || $esc;
-
-    my $other = $self->clone;
-    if ($uc_scheme) {
-	$other->_scheme(lc $scheme);
-    }
-    if ($esc) {
-	$$other =~ s{%([0-9a-fA-F]{2})}
-	            { my $a = chr(hex($1));
-                      $a =~ /^[$unreserved]\z/o ? $a : "%\U$1"
-                    }ge;
-    }
-    return $other;
-}
-
-# Compare two URIs, subclasses will provide a more correct implementation
-sub eq {
-    my($self, $other) = @_;
-    $self  = URI->new($self, $other) unless ref $self;
-    $other = URI->new($other, $self) unless ref $other;
-    ref($self) eq ref($other) &&                # same class
-	$self->canonical->as_string eq $other->canonical->as_string;
-}
-
-# generic-URI transformation methods
-sub abs { $_[0]; }
-sub rel { $_[0]; }
-
-# help out Storable
-sub STORABLE_freeze {
-       my($self, $cloning) = @_;
-       return $$self;
-}
-
-sub STORABLE_thaw {
-       my($self, $cloning, $str) = @_;
-       $$self = $str;
-}
-
-1;
-
-__END__
-
-=head1 NAME
-
-URI - Uniform Resource Identifiers (absolute and relative)
-
-=head1 SYNOPSIS
-
- $u1 = URI->new("http://www.perl.com");
- $u2 = URI->new("foo", "http");
- $u3 = $u2->abs($u1);
- $u4 = $u3->clone;
- $u5 = URI->new("HTTP://WWW.perl.com:80")->canonical;
-
- $str = $u->as_string;
- $str = "$u";
-
- $scheme = $u->scheme;
- $opaque = $u->opaque;
- $path   = $u->path;
- $frag   = $u->fragment;
-
- $u->scheme("ftp");
- $u->host("ftp.perl.com");
- $u->path("cpan/");
-
-=head1 DESCRIPTION
-
-This module implements the C<URI> class.  Objects of this class
-represent "Uniform Resource Identifier references" as specified in RFC
-2396 (and updated by RFC 2732).
-
-A Uniform Resource Identifier is a compact string of characters that
-identifies an abstract or physical resource.  A Uniform Resource
-Identifier can be further classified as either a Uniform Resource Locator
-(URL) or a Uniform Resource Name (URN).  The distinction between URL
-and URN does not matter to the C<URI> class interface. A
-"URI-reference" is a URI that may have additional information attached
-in the form of a fragment identifier.
-
-An absolute URI reference consists of three parts:  a I<scheme>, a
-I<scheme-specific part> and a I<fragment> identifier.  A subset of URI
-references share a common syntax for hierarchical namespaces.  For
-these, the scheme-specific part is further broken down into
-I<authority>, I<path> and I<query> components.  These URIs can also
-take the form of relative URI references, where the scheme (and
-usually also the authority) component is missing, but implied by the
-context of the URI reference.  The three forms of URI reference
-syntax are summarized as follows:
-
-  <scheme>:<scheme-specific-part>#<fragment>
-  <scheme>://<authority><path>?<query>#<fragment>
-  <path>?<query>#<fragment>
-
-The components into which a URI reference can be divided depend on the
-I<scheme>.  The C<URI> class provides methods to get and set the
-individual components.  The methods available for a specific
-C<URI> object depend on the scheme.
-
-=head1 CONSTRUCTORS
-
-The following methods construct new C<URI> objects:
-
-=over 4
-
-=item $uri = URI->new( $str )
-
-=item $uri = URI->new( $str, $scheme )
-
-Constructs a new URI object.  The string
-representation of a URI is given as argument, together with an optional
-scheme specification.  Common URI wrappers like "" and <>, as well as
-leading and trailing white space, are automatically removed from
-the $str argument before it is processed further.
-
-The constructor determines the scheme, maps this to an appropriate
-URI subclass, constructs a new object of that class and returns it.
-
-The $scheme argument is only used when $str is a
-relative URI.  It can be either a simple string that
-denotes the scheme, a string containing an absolute URI reference, or
-an absolute C<URI> object.  If no $scheme is specified for a relative
-URI $str, then $str is simply treated as a generic URI (no scheme-specific
-methods available).
-
-The set of characters available for building URI references is
-restricted (see L<URI::Escape>).  Characters outside this set are
-automatically escaped by the URI constructor.
-
-=item $uri = URI->new_abs( $str, $base_uri )
-
-Constructs a new absolute URI object.  The $str argument can
-denote a relative or absolute URI.  If relative, then it is
-absolutized using $base_uri as base. The $base_uri must be an absolute
-URI.
-
-=item $uri = URI::file->new( $filename )
-
-=item $uri = URI::file->new( $filename, $os )
-
-Constructs a new I<file> URI from a file name.  See L<URI::file>.
-
-=item $uri = URI::file->new_abs( $filename )
-
-=item $uri = URI::file->new_abs( $filename, $os )
-
-Constructs a new absolute I<file> URI from a file name.  See
-L<URI::file>.
-
-=item $uri = URI::file->cwd
-
-Returns the current working directory as a I<file> URI.  See
-L<URI::file>.
-
-=item $uri->clone
-
-Returns a copy of the $uri.
-
-=back
-
-=head1 COMMON METHODS
-
-The methods described in this section are available for all C<URI>
-objects.
-
-Methods that give access to components of a URI always return the
-old value of the component.  The value returned is C<undef> if the
-component was not present.  There is generally a difference between a
-component that is empty (represented as C<"">) and a component that is
-missing (represented as C<undef>).  If an accessor method is given an
-argument, it updates the corresponding component in addition to
-returning the old value of the component.  Passing an undefined
-argument removes the component (if possible).  The description of
-each accessor method indicates whether the component is passed as
-an escaped or an unescaped string.  A component that can be further
-divided into sub-parts are usually passed escaped, as unescaping might
-change its semantics.
-
-The common methods available for all URI are:
-
-=over 4
-
-=item $uri->scheme
-
-=item $uri->scheme( $new_scheme )
-
-Sets and returns the scheme part of the $uri.  If the $uri is
-relative, then $uri->scheme returns C<undef>.  If called with an
-argument, it updates the scheme of $uri, possibly changing the
-class of $uri, and returns the old scheme value.  The method croaks
-if the new scheme name is illegal; a scheme name must begin with a
-letter and must consist of only US-ASCII letters, numbers, and a few
-special marks: ".", "+", "-".  This restriction effectively means
-that the scheme must be passed unescaped.  Passing an undefined
-argument to the scheme method makes the URI relative (if possible).
-
-Letter case does not matter for scheme names.  The string
-returned by $uri->scheme is always lowercase.  If you want the scheme
-just as it was written in the URI in its original case,
-you can use the $uri->_scheme method instead.
-
-=item $uri->opaque
-
-=item $uri->opaque( $new_opaque )
-
-Sets and returns the scheme-specific part of the $uri
-(everything between the scheme and the fragment)
-as an escaped string.
-
-=item $uri->path
-
-=item $uri->path( $new_path )
-
-Sets and returns the same value as $uri->opaque unless the URI
-supports the generic syntax for hierarchical namespaces.
-In that case the generic method is overridden to set and return
-the part of the URI between the I<host name> and the I<fragment>.
-
-=item $uri->fragment
-
-=item $uri->fragment( $new_frag )
-
-Returns the fragment identifier of a URI reference
-as an escaped string.
-
-=item $uri->as_string
-
-Returns a URI object to a plain string.  URI objects are
-also converted to plain strings automatically by overloading.  This
-means that $uri objects can be used as plain strings in most Perl
-constructs.
-
-=item $uri->canonical
-
-Returns a normalized version of the URI.  The rules
-for normalization are scheme-dependent.  They usually involve
-lowercasing the scheme and Internet host name components,
-removing the explicit port specification if it matches the default port,
-uppercasing all escape sequences, and unescaping octets that can be
-better represented as plain characters.
-
-For efficiency reasons, if the $uri is already in normalized form,
-then a reference to it is returned instead of a copy.
-
-=item $uri->eq( $other_uri )
-
-=item URI::eq( $first_uri, $other_uri )
-
-Tests whether two URI references are equal.  URI references
-that normalize to the same string are considered equal.  The method
-can also be used as a plain function which can also test two string
-arguments.
-
-If you need to test whether two C<URI> object references denote the
-same object, use the '==' operator.
-
-=item $uri->abs( $base_uri )
-
-Returns an absolute URI reference.  If $uri is already
-absolute, then a reference to it is simply returned.  If the $uri
-is relative, then a new absolute URI is constructed by combining the
-$uri and the $base_uri, and returned.
-
-=item $uri->rel( $base_uri )
-
-Returns a relative URI reference if it is possible to
-make one that denotes the same resource relative to $base_uri.
-If not, then $uri is simply returned.
-
-=back
-
-=head1 GENERIC METHODS
-
-The following methods are available to schemes that use the
-common/generic syntax for hierarchical namespaces.  The descriptions of
-schemes below indicate which these are.  Unknown schemes are
-assumed to support the generic syntax, and therefore the following
-methods:
-
-=over 4
-
-=item $uri->authority
-
-=item $uri->authority( $new_authority )
-
-Sets and returns the escaped authority component
-of the $uri.
-
-=item $uri->path
-
-=item $uri->path( $new_path )
-
-Sets and returns the escaped path component of
-the $uri (the part between the host name and the query or fragment).
-The path can never be undefined, but it can be the empty string.
-
-=item $uri->path_query
-
-=item $uri->path_query( $new_path_query )
-
-Sets and returns the escaped path and query
-components as a single entity.  The path and the query are
-separated by a "?" character, but the query can itself contain "?".
-
-=item $uri->path_segments
-
-=item $uri->path_segments( $segment, ... )
-
-Sets and returns the path.  In a scalar context, it returns
-the same value as $uri->path.  In a list context, it returns the
-unescaped path segments that make up the path.  Path segments that
-have parameters are returned as an anonymous array.  The first element
-is the unescaped path segment proper;  subsequent elements are escaped
-parameter strings.  Such an anonymous array uses overloading so it can
-be treated as a string too, but this string does not include the
-parameters.
-
-Note that absolute paths have the empty string as their first
-I<path_segment>, i.e. the I<path> C</foo/bar> have 3
-I<path_segments>; "", "foo" and "bar".
-
-=item $uri->query
-
-=item $uri->query( $new_query )
-
-Sets and returns the escaped query component of
-the $uri.
-
-=item $uri->query_form
-
-=item $uri->query_form( $key1 => $val1, $key2 => $val2, ... )
-
-=item $uri->query_form( \@key_value_pairs )
-
-=item $uri->query_form( \%hash )
-
-Sets and returns query components that use the
-I<application/x-www-form-urlencoded> format.  Key/value pairs are
-separated by "&", and the key is separated from the value by a "="
-character.
-
-The form can be set either by passing separate key/value pairs, or via
-an array or hash reference.  Passing an empty array or an empty hash
-removes the query component, whereas passing no arguments at all leaves
-the component unchanged.  The order of keys is undefined if a hash
-reference is passed.  The old value is always returned as a list of
-separate key/value pairs.  Assigning this list to a hash is unwise as
-the keys returned might repeat.
-
-The values passed when setting the form can be plain strings or
-references to arrays of strings.  Passing an array of values has the
-same effect as passing the key repeatedly with one value at a time.
-All the following statements have the same effect:
-
-    $uri->query_form(foo => 1, foo => 2);
-    $uri->query_form(foo => [1, 2]);
-    $uri->query_form([ foo => 1, foo => 2 ]);
-    $uri->query_form([ foo => [1, 2] ]);
-    $uri->query_form({ foo => [1, 2] });
-
-The C<URI::QueryParam> module can be loaded to add further methods to
-manipulate the form of a URI.  See L<URI::QueryParam> for details.
-
-=item $uri->query_keywords
-
-=item $uri->query_keywords( $keywords, ... )
-
-=item $uri->query_keywords( \@keywords )
-
-Sets and returns query components that use the
-keywords separated by "+" format.
-
-The keywords can be set either by passing separate keywords directly
-or by passing a reference to an array of keywords.  Passing an empty
-array removes the query component, whereas passing no arguments at
-all leaves the component unchanged.  The old value is always returned
-as a list of separate words.
-
-=back
-
-=head1 SERVER METHODS
-
-For schemes where the I<authority> component denotes an Internet host,
-the following methods are available in addition to the generic
-methods.
-
-=over 4
-
-=item $uri->userinfo
-
-=item $uri->userinfo( $new_userinfo )
-
-Sets and returns the escaped userinfo part of the
-authority component.
-
-For some schemes this is a user name and a password separated by
-a colon.  This practice is not recommended. Embedding passwords in
-clear text (such as URI) has proven to be a security risk in almost
-every case where it has been used.
-
-=item $uri->host
-
-=item $uri->host( $new_host )
-
-Sets and returns the unescaped hostname.
-
-If the $new_host string ends with a colon and a number, then this
-number also sets the port.
-
-=item $uri->port
-
-=item $uri->port( $new_port )
-
-Sets and returns the port.  The port is a simple integer
-that should be greater than 0.
-
-If a port is not specified explicitly in the URI, then the URI scheme's default port
-is returned. If you don't want the default port
-substituted, then you can use the $uri->_port method instead.
-
-=item $uri->host_port
-
-=item $uri->host_port( $new_host_port )
-
-Sets and returns the host and port as a single
-unit.  The returned value includes a port, even if it matches the
-default port.  The host part and the port part are separated by a
-colon: ":".
-
-=item $uri->default_port
-
-Returns the default port of the URI scheme to which $uri
-belongs.  For I<http> this is the number 80, for I<ftp> this
-is the number 21, etc.  The default port for a scheme can not be
-changed.
-
-=back
-
-=head1 SCHEME-SPECIFIC SUPPORT
-
-Scheme-specific support is provided for the following URI schemes.  For C<URI>
-objects that do not belong to one of these, you can only use the common and
-generic methods.
-
-=over 4
-
-=item B<data>:
-
-The I<data> URI scheme is specified in RFC 2397.  It allows inclusion
-of small data items as "immediate" data, as if it had been included
-externally.
-
-C<URI> objects belonging to the data scheme support the common methods
-and two new methods to access their scheme-specific components:
-$uri->media_type and $uri->data.  See L<URI::data> for details.
-
-=item B<file>:
-
-An old specification of the I<file> URI scheme is found in RFC 1738.
-A new RFC 2396 based specification in not available yet, but file URI
-references are in common use.
-
-C<URI> objects belonging to the file scheme support the common and
-generic methods.  In addition, they provide two methods for mapping file URIs
-back to local file names; $uri->file and $uri->dir.  See L<URI::file>
-for details.
-
-=item B<ftp>:
-
-An old specification of the I<ftp> URI scheme is found in RFC 1738.  A
-new RFC 2396 based specification in not available yet, but ftp URI
-references are in common use.
-
-C<URI> objects belonging to the ftp scheme support the common,
-generic and server methods.  In addition, they provide two methods for
-accessing the userinfo sub-components: $uri->user and $uri->password.
-
-=item B<gopher>:
-
-The I<gopher> URI scheme is specified in
-<draft-murali-url-gopher-1996-12-04> and will hopefully be available
-as a RFC 2396 based specification.
-
-C<URI> objects belonging to the gopher scheme support the common,
-generic and server methods. In addition, they support some methods for
-accessing gopher-specific path components: $uri->gopher_type,
-$uri->selector, $uri->search, $uri->string.
-
-=item B<http>:
-
-The I<http> URI scheme is specified in RFC 2616.
-The scheme is used to reference resources hosted by HTTP servers.
-
-C<URI> objects belonging to the http scheme support the common,
-generic and server methods.
-
-=item B<https>:
-
-The I<https> URI scheme is a Netscape invention which is commonly
-implemented.  The scheme is used to reference HTTP servers through SSL
-connections.  Its syntax is the same as http, but the default
-port is different.
-
-=item B<ldap>:
-
-The I<ldap> URI scheme is specified in RFC 2255.  LDAP is the
-Lightweight Directory Access Protocol.  An ldap URI describes an LDAP
-search operation to perform to retrieve information from an LDAP
-directory.
-
-C<URI> objects belonging to the ldap scheme support the common,
-generic and server methods as well as ldap-specific methods: $uri->dn,
-$uri->attributes, $uri->scope, $uri->filter, $uri->extensions.  See
-L<URI::ldap> for details.
-
-=item B<ldapi>:
-
-Like the I<ldap> URI scheme, but uses a UNIX domain socket.  The
-server methods are not supported, and the local socket path is
-available as $uri->un_path.  The I<ldapi> scheme is used by the
-OpenLDAP package.  There is no real specification for it, but it is
-mentioned in various OpenLDAP manual pages.
-
-=item B<ldaps>:
-
-Like the I<ldap> URI scheme, but uses an SSL connection.  This
-scheme is deprecated, as the preferred way is to use the I<start_tls>
-mechanism.
-
-=item B<mailto>:
-
-The I<mailto> URI scheme is specified in RFC 2368.  The scheme was
-originally used to designate the Internet mailing address of an
-individual or service.  It has (in RFC 2368) been extended to allow
-setting of other mail header fields and the message body.
-
-C<URI> objects belonging to the mailto scheme support the common
-methods and the generic query methods.  In addition, they support the
-following mailto-specific methods: $uri->to, $uri->headers.
-
-=item B<mms>:
-
-The I<mms> URL specification can be found at L<http://sdp.ppona.com/>
-C<URI> objects belonging to the mms scheme support the common,
-generic, and server methods, with the exception of userinfo and
-query-related sub-components.
-
-=item B<news>:
-
-The I<news>, I<nntp> and I<snews> URI schemes are specified in
-<draft-gilman-news-url-01> and will hopefully be available as an RFC
-2396 based specification soon.
-
-C<URI> objects belonging to the news scheme support the common,
-generic and server methods.  In addition, they provide some methods to
-access the path: $uri->group and $uri->message.
-
-=item B<nntp>:
-
-See I<news> scheme.
-
-=item B<pop>:
-
-The I<pop> URI scheme is specified in RFC 2384. The scheme is used to
-reference a POP3 mailbox.
-
-C<URI> objects belonging to the pop scheme support the common, generic
-and server methods.  In addition, they provide two methods to access the
-userinfo components: $uri->user and $uri->auth
-
-=item B<rlogin>:
-
-An old specification of the I<rlogin> URI scheme is found in RFC
-1738. C<URI> objects belonging to the rlogin scheme support the
-common, generic and server methods.
-
-=item B<rtsp>:
-
-The I<rtsp> URL specification can be found in section 3.2 of RFC 2326.
-C<URI> objects belonging to the rtsp scheme support the common,
-generic, and server methods, with the exception of userinfo and
-query-related sub-components.
-
-=item B<rtspu>:
-
-The I<rtspu> URI scheme is used to talk to RTSP servers over UDP
-instead of TCP.  The syntax is the same as rtsp.
-
-=item B<rsync>:
-
-Information about rsync is available from http://rsync.samba.org.
-C<URI> objects belonging to the rsync scheme support the common,
-generic and server methods.  In addition, they provide methods to
-access the userinfo sub-components: $uri->user and $uri->password.
-
-=item B<sip>:
-
-The I<sip> URI specification is described in sections 19.1 and 25
-of RFC 3261.  C<URI> objects belonging to the sip scheme support the
-common, generic, and server methods with the exception of path related
-sub-components.  In addition, they provide two methods to get and set
-I<sip> parameters: $uri->params_form and $uri->params.
-
-=item B<sips>:
-
-See I<sip> scheme.  Its syntax is the same as sip, but the default
-port is different.
-
-=item B<snews>:
-
-See I<news> scheme.  Its syntax is the same as news, but the default
-port is different.
-
-=item B<telnet>:
-
-An old specification of the I<telnet> URI scheme is found in RFC
-1738. C<URI> objects belonging to the telnet scheme support the
-common, generic and server methods.
-
-=item B<tn3270>:
-
-These URIs are used like I<telnet> URIs but for connections to IBM
-mainframes.  C<URI> objects belonging to the tn3270 scheme support the
-common, generic and server methods.
-
-=item B<ssh>:
-
-Information about ssh is available at http://www.openssh.com/.
-C<URI> objects belonging to the ssh scheme support the common,
-generic and server methods. In addition, they provide methods to
-access the userinfo sub-components: $uri->user and $uri->password.
-
-=item B<urn>:
-
-The syntax of Uniform Resource Names is specified in RFC 2141.  C<URI>
-objects belonging to the urn scheme provide the common methods, and also the
-methods $uri->nid and $uri->nss, which return the Namespace Identifier
-and the Namespace-Specific String respectively.
-
-The Namespace Identifier basically works like the Scheme identifier of
-URIs, and further divides the URN namespace.  Namespace Identifier
-assignments are maintained at
-<http://www.iana.org/assignments/urn-namespaces>.
-
-Letter case is not significant for the Namespace Identifier.  It is
-always returned in lower case by the $uri->nid method.  The $uri->_nid
-method can be used if you want it in its original case.
-
-=item B<urn>:B<isbn>:
-
-The C<urn:isbn:> namespace contains International Standard Book
-Numbers (ISBNs) and is described in RFC 3187.  A C<URI> object belonging
-to this namespace has the following extra methods (if the
-Business::ISBN module is available): $uri->isbn,
-$uri->isbn_publisher_code, $uri->isbn_country_code, $uri->isbn_as_ean.
-
-=item B<urn>:B<oid>:
-
-The C<urn:oid:> namespace contains Object Identifiers (OIDs) and is
-described in RFC 3061.  An object identifier consists of sequences of digits
-separated by dots.  A C<URI> object belonging to this namespace has an
-additional method called $uri->oid that can be used to get/set the oid
-value.  In a list context, oid numbers are returned as separate elements.
-
-=back
-
-=head1 CONFIGURATION VARIABLES
-
-The following configuration variables influence how the class and its
-methods behave:
-
-=over 4
-
-=item $URI::ABS_ALLOW_RELATIVE_SCHEME
-
-Some older parsers used to allow the scheme name to be present in the
-relative URL if it was the same as the base URL scheme.  RFC 2396 says
-that this should be avoided, but you can enable this old behaviour by
-setting the $URI::ABS_ALLOW_RELATIVE_SCHEME variable to a TRUE value.
-The difference is demonstrated by the following examples:
-
-  URI->new("http:foo")->abs("http://host/a/b")
-      ==>  "http:foo"
-
-  local $URI::ABS_ALLOW_RELATIVE_SCHEME = 1;
-  URI->new("http:foo")->abs("http://host/a/b")
-      ==>  "http:/host/a/foo"
-
-
-=item $URI::ABS_REMOTE_LEADING_DOTS
-
-You can also have the abs() method ignore excess ".."
-segments in the relative URI by setting $URI::ABS_REMOTE_LEADING_DOTS
-to a TRUE value.  The difference is demonstrated by the following
-examples:
-
-  URI->new("../../../foo")->abs("http://host/a/b")
-      ==> "http://host/../../foo"
-
-  local $URI::ABS_REMOTE_LEADING_DOTS = 1;
-  URI->new("../../../foo")->abs("http://host/a/b")
-      ==> "http://host/foo"
-
-=back
-
-=head1 BUGS
-
-Using regexp variables like $1 directly as arguments to the URI methods
-does not work too well with current perl implementations.  I would argue
-that this is actually a bug in perl.  The workaround is to quote
-them. Example:
-
-   /(...)/ || die;
-   $u->query("$1");
-
-=head1 PARSING URIs WITH REGEXP
-
-As an alternative to this module, the following (official) regular
-expression can be used to decode a URI:
-
-  my($scheme, $authority, $path, $query, $fragment) =
-  $uri =~ m|(?:([^:/?#]+):)?(?://([^/?#]*))?([^?#]*)(?:\?([^#]*))?(?:#(.*))?|;
-
-The C<URI::Split> module provides the function uri_split() as a
-readable alternative.
-
-=head1 SEE ALSO
-
-L<URI::file>, L<URI::WithBase>, L<URI::QueryParam>, L<URI::Escape>,
-L<URI::Split>, L<URI::Heuristic>
-
-RFC 2396: "Uniform Resource Identifiers (URI): Generic Syntax",
-Berners-Lee, Fielding, Masinter, August 1998.
-
-http://www.iana.org/assignments/uri-schemes
-
-http://www.iana.org/assignments/urn-namespaces
-
-http://www.w3.org/Addressing/
-
-=head1 COPYRIGHT
-
-Copyright 1995-2003 Gisle Aas.
-
-Copyright 1995 Martijn Koster.
-
-This program is free software; you can redistribute it and/or modify
-it under the same terms as Perl itself.
-
-=head1 AUTHORS / ACKNOWLEDGMENTS
-
-This module is based on the C<URI::URL> module, which in turn was
-(distantly) based on the C<wwwurl.pl> code in the libwww-perl for
-perl4 developed by Roy Fielding, as part of the Arcadia project at the
-University of California, Irvine, with contributions from Brooks
-Cutter.
-
-C<URI::URL> was developed by Gisle Aas, Tim Bunce, Roy Fielding and
-Martijn Koster with input from other people on the libwww-perl mailing
-list.
-
-C<URI> and related subclasses was developed by Gisle Aas.
-
-=cut