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package URI::_generic;
require URI;
require URI::_query;
@ISA=qw(URI URI::_query);
use strict;
use URI::Escape qw(uri_unescape);
use Carp ();
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;
$abs->fragment($self->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;
}
1;