76 lines
2.1 KiB
Perl
76 lines
2.1 KiB
Perl
# Selima Website Content Management System
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# RelURI.pm: The converter to turn all URIs to relative URIs.
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# Copyright (c) 2003-2018 imacat.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# Author: imacat <imacat@mail.imacat.idv.tw>
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# First written: 2003-04-03
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package Selima::RelURI;
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use 5.008;
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use strict;
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use warnings;
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use base qw(Exporter);
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use vars qw(@EXPORT @EXPORT_OK);
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BEGIN {
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@EXPORT = qw(reluri);
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@EXPORT_OK = @EXPORT;
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# Prototype declaration
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sub reluri($;$);
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}
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use Encode qw(encode decode is_utf8);
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use URI qw();
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use Selima::DataVars qw(:requri);
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# reluri: Turn an absolute URI to a relative URI
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sub reluri($;$) {
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local ($_, %_);
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my ($uri, $base, $encoded);
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($uri, $base) = @_;
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# URI has bug with encode(). We get around it here.
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$encoded = 0;
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if (is_utf8($uri)) {
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$uri = encode("UTF-8", $uri);
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$encoded = 1;
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}
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# Default base to $REQUEST_FULLURI
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$base = defined $base?
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($base =~ /^\//? new URI($REQUEST_HOSTPORT . $base):
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new URI($base)):
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new URI($REQUEST_FULLURI);
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# Absolute path -- add the root difference and absolute it
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if ($uri =~ /^\//) {
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$uri = "$ROOT_DIFF$uri" ;
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$uri = new URI($uri);
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$uri = $uri->abs($REQUEST_FULLURI);
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} else {
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$uri = new URI($uri);
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}
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# Obtain the relative URI
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$uri = $uri->rel($base);
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$uri = $uri->canonical->as_string;
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# Fix it for my own style
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$uri =~ s/\/$// if $uri =~ /(?<![^\/])\.\.\/$/ || $uri =~ /(?<![^\/])\.\/$/;
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# URI has bug with encode(). We get around it here.
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$uri = decode("UTF-8", $uri) if $encoded;
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return $uri;
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}
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return 1;
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