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?? Escape.pm(6.9 KB)
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?? IRI.pm(820 B)
?? QueryParam.pm(4.77 KB)
?? Split.pm(2.32 KB)
?? URL.pm(5.36 KB)
?? WithBase.pm(3.77 KB)
?? _foreign.pm(133 B)
?? _generic.pm(5.71 KB)
?? _idna.pm(2.06 KB)
?? _ldap.pm(3.2 KB)
?? _login.pm(257 B)
?? _punycode.pm(5.52 KB)
?? _query.pm(2.5 KB)
?? _segment.pm(442 B)
?? _server.pm(3.66 KB)
?? _userpass.pm(1.04 KB)
?? data.pm(3.34 KB)
?? file
?? file.pm(9.53 KB)
?? ftp.pm(1.06 KB)
?? gopher.pm(2.4 KB)
?? http.pm(451 B)
?? https.pm(170 B)
?? ldap.pm(2.88 KB)
?? ldapi.pm(467 B)
?? ldaps.pm(170 B)
?? mailto.pm(1.27 KB)
?? mms.pm(151 B)
?? news.pm(1.45 KB)
?? nntp.pm(153 B)
?? pop.pm(1.2 KB)
?? rlogin.pm(155 B)
?? rsync.pm(233 B)
?? rtsp.pm(151 B)
?? rtspu.pm(152 B)
?? sftp.pm(124 B)
?? sip.pm(1.69 KB)
?? sips.pm(169 B)
?? snews.pm(198 B)
?? ssh.pm(201 B)
?? telnet.pm(154 B)
?? tn3270.pm(154 B)
?? urn
?? urn.pm(2.15 KB)

Editing: _generic.pm

package URI::_generic;

use strict;
use warnings;

use parent qw(URI URI::_query);

use URI::Escape qw(uri_unescape);
use Carp ();

our $VERSION = '1.73';
$VERSION = eval $VERSION;

my $ACHAR = $URI::uric;  $ACHAR =~ s,\\[/?],,g;
my $PCHAR = $URI::uric;  $PCHAR =~ s,\\[?],,g;

sub _no_scheme_ok { 1 }

sub authority
{
    my $self = shift;
    $$self =~ m,^((?:$URI::scheme_re:)?)(?://([^/?\#]*))?(.*)$,os or die;

if (@_) {
	my $auth = shift;
	$$self = $1;
	my $rest = $3;
	if (defined $auth) {
	    $auth =~ s/([^$ACHAR])/ URI::Escape::escape_char($1)/ego;
	    utf8::downgrade($auth);
	    $$self .= "//$auth";
	}
	_check_path($rest, $$self);
	$$self .= $rest;
    }
    $2;
}

sub path
{
    my $self = shift;
    $$self =~ m,^((?:[^:/?\#]+:)?(?://[^/?\#]*)?)([^?\#]*)(.*)$,s or die;

if (@_) {
	$$self = $1;
	my $rest = $3;
	my $new_path = shift;
	$new_path = "" unless defined $new_path;
	$new_path =~ s/([^$PCHAR])/ URI::Escape::escape_char($1)/ego;
	utf8::downgrade($new_path);
	_check_path($new_path, $$self);
	$$self .= $new_path . $rest;
    }
    $2;
}

sub path_query
{
    my $self = shift;
    $$self =~ m,^((?:[^:/?\#]+:)?(?://[^/?\#]*)?)([^\#]*)(.*)$,s or die;

if (@_) {
	$$self = $1;
	my $rest = $3;
	my $new_path = shift;
	$new_path = "" unless defined $new_path;
	$new_path =~ s/([^$URI::uric])/ URI::Escape::escape_char($1)/ego;
	utf8::downgrade($new_path);
	_check_path($new_path, $$self);
	$$self .= $new_path . $rest;
    }
    $2;
}

sub _check_path
{
    my($path, $pre) = @_;
    my $prefix;
    if ($pre =~ m,/,) {  # authority present
	$prefix = "/" if length($path) && $path !~ m,^[/?\#],;
    }
    else {
	if ($path =~ m,^//,) {
	    Carp::carp("Path starting with double slash is confusing")
		if $^W;
	}
	elsif (!length($pre) && $path =~ m,^[^:/?\#]+:,) {
	    Carp::carp("Path might look like scheme, './' prepended")
		if $^W;
	    $prefix = "./";
	}
    }
    substr($_[0], 0, 0) = $prefix if defined $prefix;
}

sub path_segments
{
    my $self = shift;
    my $path = $self->path;
    if (@_) {
	my @arg = @_;  # make a copy
	for (@arg) {
	    if (ref($_)) {
		my @seg = @$_;
		$seg[0] =~ s/%/%25/g;
		for (@seg) { s/;/%3B/g; }
		$_ = join(";", @seg);
	    }
	    else {
		 s/%/%25/g; s/;/%3B/g;
	    }
	    s,/,%2F,g;
	}
	$self->path(join("/", @arg));
    }
    return $path unless wantarray;
    map {/;/ ? $self->_split_segment($_)
             : uri_unescape($_) }
        split('/', $path, -1);
}

sub _split_segment
{
    my $self = shift;
    require URI::_segment;
    URI::_segment->new(@_);
}

sub abs
{
    my $self = shift;
    my $base = shift || Carp::croak("Missing base argument");

if (my $scheme = $self->scheme) {
	return $self unless $URI::ABS_ALLOW_RELATIVE_SCHEME;
	$base = URI->new($base) unless ref $base;
	return $self unless $scheme eq $base->scheme;
    }

$base = URI->new($base) unless ref $base;
    my $abs = $self->clone;
    $abs->scheme($base->scheme);
    return $abs if $$self =~ m,^(?:$URI::scheme_re:)?//,o;
    $abs->authority($base->authority);

my $path = $self->path;
    return $abs if $path =~ m,^/,;

if (!length($path)) {
	my $abs = $base->clone;
	my $query = $self->query;
	$abs->query($query) if defined $query;
	my $fragment = $self->fragment;
	$abs->fragment($fragment) if defined $fragment;
	return $abs;
    }

my $p = $base->path;
    $p =~ s,[^/]+$,,;
    $p .= $path;
    my @p = split('/', $p, -1);
    shift(@p) if @p && !length($p[0]);
    my $i = 1;
    while ($i < @p) {
	#print "$i ", join("/", @p), " ($p[$i])\n";
	if ($p[$i-1] eq ".") {
	    splice(@p, $i-1, 1);
	    $i-- if $i > 1;
	}
	elsif ($p[$i] eq ".." && $p[$i-1] ne "..") {
	    splice(@p, $i-1, 2);
	    if ($i > 1) {
		$i--;
		push(@p, "") if $i == @p;
	    }
	}
	else {
	    $i++;
	}
    }
    $p[-1] = "" if @p && $p[-1] eq ".";  # trailing "/."
    if ($URI::ABS_REMOTE_LEADING_DOTS) {
        shift @p while @p && $p[0] =~ /^\.\.?$/;
    }
    $abs->path("/" . join("/", @p));
    $abs;
}

# The opposite of $url->abs.  Return a URI which is as relative as possible
sub rel {
    my $self = shift;
    my $base = shift || Carp::croak("Missing base argument");
    my $rel = $self->clone;
    $base = URI->new($base) unless ref $base;

#my($scheme, $auth, $path) = @{$rel}{qw(scheme authority path)};
    my $scheme = $rel->scheme;
    my $auth   = $rel->canonical->authority;
    my $path   = $rel->path;

if (!defined($scheme) && !defined($auth)) {
	# it is already relative
	return $rel;
    }

#my($bscheme, $bauth, $bpath) = @{$base}{qw(scheme authority path)};
    my $bscheme = $base->scheme;
    my $bauth   = $base->canonical->authority;
    my $bpath   = $base->path;

for ($bscheme, $bauth, $auth) {
	$_ = '' unless defined
    }

unless ($scheme eq $bscheme && $auth eq $bauth) {
	# different location, can't make it relative
	return $rel;
    }

for ($path, $bpath) {  $_ = "/$_" unless m,^/,; }

# Make it relative by eliminating scheme and authority
    $rel->scheme(undef);
    $rel->authority(undef);

# This loop is based on code from Nicolai Langfeldt <janl@ifi.uio.no>.
    # First we calculate common initial path components length ($li).
    my $li = 1;
    while (1) {
	my $i = index($path, '/', $li);
	last if $i < 0 ||
                $i != index($bpath, '/', $li) ||
	        substr($path,$li,$i-$li) ne substr($bpath,$li,$i-$li);
	$li=$i+1;
    }
    # then we nuke it from both paths
    substr($path, 0,$li) = '';
    substr($bpath,0,$li) = '';

if ($path eq $bpath &&
        defined($rel->fragment) &&
        !defined($rel->query)) {
        $rel->path("");
    }
    else {
        # Add one "../" for each path component left in the base path
        $path = ('../' x $bpath =~ tr|/|/|) . $path;
	$path = "./" if $path eq "";
        $rel->path($path);
    }

$rel;
}

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Editing: _generic.pm

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