* add phpunit as a dev dependency

 * add some basic tests for UrlHelper::rewrite_relative()
 * fix UrlHelper::rewrite_relative() to work better on non-absolute
   relative URL paths

5 files changed, 657 insertions, 0 deletions

diff --git a/vendor/sebastian/exporter/ChangeLog.md b/vendor/sebastian/exporter/ChangeLog.md
new file mode 100644
index 000000000..c691e81ab
--- /dev/null
+++ b/vendor/sebastian/exporter/ChangeLog.md
@@ -0,0 +1,64 @@
+# ChangeLog
+
+All notable changes are documented in this file using the [Keep a CHANGELOG](https://keepachangelog.com/) principles.
+
+## [4.0.4] - 2021-11-11
+
+### Changed
+
+* [#37](https://github.com/sebastianbergmann/exporter/pull/37): Improve export of closed resources
+
+## [4.0.3] - 2020-09-28
+
+### Changed
+
+* Changed PHP version constraint in `composer.json` from `^7.3 || ^8.0` to `>=7.3`
+
+## [4.0.2] - 2020-06-26
+
+### Added
+
+* This component is now supported on PHP 8
+
+## [4.0.1] - 2020-06-15
+
+### Changed
+
+* Tests etc. are now ignored for archive exports
+
+## [4.0.0] - 2020-02-07
+
+### Removed
+
+* This component is no longer supported on PHP 7.0, PHP 7.1, and PHP 7.2
+
+## [3.1.4] - 2021-11-11
+
+### Changed
+
+* [#38](https://github.com/sebastianbergmann/exporter/pull/38): Improve export of closed resources
+
+## [3.1.3] - 2020-11-30
+
+### Changed
+
+* Changed PHP version constraint in `composer.json` from `^7.0` to `>=7.0`
+
+## [3.1.2] - 2019-09-14
+
+### Fixed
+
+* [#29](https://github.com/sebastianbergmann/exporter/pull/29): Second parameter for `str_repeat()` must be an integer
+
+### Removed
+
+* Remove HHVM-specific code that is no longer needed
+
+[4.0.4]: https://github.com/sebastianbergmann/exporter/compare/4.0.3...4.0.4
+[4.0.3]: https://github.com/sebastianbergmann/exporter/compare/4.0.2...4.0.3
+[4.0.2]: https://github.com/sebastianbergmann/exporter/compare/4.0.1...4.0.2
+[4.0.1]: https://github.com/sebastianbergmann/exporter/compare/4.0.0...4.0.1
+[4.0.0]: https://github.com/sebastianbergmann/exporter/compare/3.1.2...4.0.0
+[3.1.4]: https://github.com/sebastianbergmann/exporter/compare/3.1.3...3.1.4
+[3.1.3]: https://github.com/sebastianbergmann/exporter/compare/3.1.2...3.1.3
+[3.1.2]: https://github.com/sebastianbergmann/exporter/compare/3.1.1...3.1.2
diff --git a/vendor/sebastian/exporter/LICENSE b/vendor/sebastian/exporter/LICENSE
new file mode 100644
index 000000000..26dc7feca
--- /dev/null
+++ b/vendor/sebastian/exporter/LICENSE
@@ -0,0 +1,33 @@
+Exporter
+
+Copyright (c) 2002-2021, Sebastian Bergmann <[email protected]>.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+ * Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+ * Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in
+   the documentation and/or other materials provided with the
+   distribution.
+
+ * Neither the name of Sebastian Bergmann nor the names of his
+   contributors may be used to endorse or promote products derived
+   from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
+ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+POSSIBILITY OF SUCH DAMAGE.
diff --git a/vendor/sebastian/exporter/README.md b/vendor/sebastian/exporter/README.md
new file mode 100644
index 000000000..ed8719f56
--- /dev/null
+++ b/vendor/sebastian/exporter/README.md
@@ -0,0 +1,174 @@
+# sebastian/exporter
+
+[![CI Status](https://github.com/sebastianbergmann/exporter/workflows/CI/badge.svg)](https://github.com/sebastianbergmann/exporter/actions)
+[![Type Coverage](https://shepherd.dev/github/sebastianbergmann/exporter/coverage.svg)](https://shepherd.dev/github/sebastianbergmann/exporter)
+
+This component provides the functionality to export PHP variables for visualization.
+
+## Installation
+
+You can add this library as a local, per-project dependency to your project using [Composer](https://getcomposer.org/):
+
+```
+composer require sebastian/exporter
+```
+
+If you only need this library during development, for instance to run your project's test suite, then you should add it as a development-time dependency:
+
+```
+composer require --dev sebastian/exporter
+```
+
+## Usage
+
+Exporting:
+
+```php
+<?php
+use SebastianBergmann\Exporter\Exporter;
+
+$exporter = new Exporter;
+
+/*
+Exception Object &0000000078de0f0d000000002003a261 (
+    'message' => ''
+    'string' => ''
+    'code' => 0
+    'file' => '/home/sebastianbergmann/test.php'
+    'line' => 34
+    'previous' => null
+)
+*/
+
+print $exporter->export(new Exception);
+```
+
+## Data Types
+
+Exporting simple types:
+
+```php
+<?php
+use SebastianBergmann\Exporter\Exporter;
+
+$exporter = new Exporter;
+
+// 46
+print $exporter->export(46);
+
+// 4.0
+print $exporter->export(4.0);
+
+// 'hello, world!'
+print $exporter->export('hello, world!');
+
+// false
+print $exporter->export(false);
+
+// NAN
+print $exporter->export(acos(8));
+
+// -INF
+print $exporter->export(log(0));
+
+// null
+print $exporter->export(null);
+
+// resource(13) of type (stream)
+print $exporter->export(fopen('php://stderr', 'w'));
+
+// Binary String: 0x000102030405
+print $exporter->export(chr(0) . chr(1) . chr(2) . chr(3) . chr(4) . chr(5));
+```
+
+Exporting complex types:
+
+```php
+<?php
+use SebastianBergmann\Exporter\Exporter;
+
+$exporter = new Exporter;
+
+/*
+Array &0 (
+    0 => Array &1 (
+        0 => 1
+        1 => 2
+        2 => 3
+    )
+    1 => Array &2 (
+        0 => ''
+        1 => 0
+        2 => false
+    )
+)
+*/
+
+print $exporter->export(array(array(1,2,3), array("",0,FALSE)));
+
+/*
+Array &0 (
+    'self' => Array &1 (
+        'self' => Array &1
+    )
+)
+*/
+
+$array = array();
+$array['self'] = &$array;
+print $exporter->export($array);
+
+/*
+stdClass Object &0000000003a66dcc0000000025e723e2 (
+    'self' => stdClass Object &0000000003a66dcc0000000025e723e2
+)
+*/
+
+$obj = new stdClass();
+$obj->self = $obj;
+print $exporter->export($obj);
+```
+
+Compact exports:
+
+```php
+<?php
+use SebastianBergmann\Exporter\Exporter;
+
+$exporter = new Exporter;
+
+// Array ()
+print $exporter->shortenedExport(array());
+
+// Array (...)
+print $exporter->shortenedExport(array(1,2,3,4,5));
+
+// stdClass Object ()
+print $exporter->shortenedExport(new stdClass);
+
+// Exception Object (...)
+print $exporter->shortenedExport(new Exception);
+
+// this\nis\na\nsuper\nlong\nstring\nt...\nspace
+print $exporter->shortenedExport(
+<<<LONG_STRING
+this
+is
+a
+super
+long
+string
+that
+wraps
+a
+lot
+and
+eats
+up
+a
+lot
+of
+space
+LONG_STRING
+);
+```
diff --git a/vendor/sebastian/exporter/composer.json b/vendor/sebastian/exporter/composer.json
new file mode 100644
index 000000000..baa958443
--- /dev/null
+++ b/vendor/sebastian/exporter/composer.json
@@ -0,0 +1,56 @@
+{
+    "name": "sebastian/exporter",
+    "description": "Provides the functionality to export PHP variables for visualization",
+    "keywords": ["exporter","export"],
+    "homepage": "https://www.github.com/sebastianbergmann/exporter",
+    "license": "BSD-3-Clause",
+    "authors": [
+        {
+            "name": "Sebastian Bergmann",
+            "email": "[email protected]"
+        },
+        {
+            "name": "Jeff Welch",
+            "email": "[email protected]"
+        },
+        {
+            "name": "Volker Dusch",
+            "email": "[email protected]"
+        },
+        {
+            "name": "Adam Harvey",
+            "email": "[email protected]"
+        },
+        {
+            "name": "Bernhard Schussek",
+            "email": "[email protected]"
+        }
+    ],
+    "config": {
+        "platform": {
+            "php": "7.3.0"
+        },
+        "optimize-autoloader": true,
+        "sort-packages": true
+    },
+    "prefer-stable": true,
+    "require": {
+        "php": ">=7.3",
+        "sebastian/recursion-context": "^4.0"
+    },
+    "require-dev": {
+        "phpunit/phpunit": "^9.3",
+        "ext-mbstring": "*"
+    },
+    "autoload": {
+        "classmap": [
+            "src/"
+        ]
+    },
+    "extra": {
+        "branch-alias": {
+            "dev-master": "4.0-dev"
+        }
+    }
+}
+
diff --git a/vendor/sebastian/exporter/src/Exporter.php b/vendor/sebastian/exporter/src/Exporter.php
new file mode 100644
index 000000000..692a0b21f
--- /dev/null
+++ b/vendor/sebastian/exporter/src/Exporter.php
@@ -0,0 +1,330 @@
+<?php declare(strict_types=1);
+/*
+ * This file is part of sebastian/exporter.
+ *
+ * (c) Sebastian Bergmann <[email protected]>
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+namespace SebastianBergmann\Exporter;
+
+use function bin2hex;
+use function count;
+use function function_exists;
+use function get_class;
+use function get_resource_type;
+use function gettype;
+use function implode;
+use function is_array;
+use function is_float;
+use function is_object;
+use function is_resource;
+use function is_string;
+use function mb_strlen;
+use function mb_substr;
+use function preg_match;
+use function spl_object_hash;
+use function sprintf;
+use function str_repeat;
+use function str_replace;
+use function strlen;
+use function substr;
+use function var_export;
+use SebastianBergmann\RecursionContext\Context;
+use SplObjectStorage;
+
+/**
+ * A nifty utility for visualizing PHP variables.
+ *
+ * <code>
+ * <?php
+ * use SebastianBergmann\Exporter\Exporter;
+ *
+ * $exporter = new Exporter;
+ * print $exporter->export(new Exception);
+ * </code>
+ */
+class Exporter
+{
+    /**
+     * Exports a value as a string.
+     *
+     * The output of this method is similar to the output of print_r(), but
+     * improved in various aspects:
+     *
+     *  - NULL is rendered as "null" (instead of "")
+     *  - TRUE is rendered as "true" (instead of "1")
+     *  - FALSE is rendered as "false" (instead of "")
+     *  - Strings are always quoted with single quotes
+     *  - Carriage returns and newlines are normalized to \n
+     *  - Recursion and repeated rendering is treated properly
+     *
+     * @param int $indentation The indentation level of the 2nd+ line
+     *
+     * @return string
+     */
+    public function export($value, $indentation = 0)
+    {
+        return $this->recursiveExport($value, $indentation);
+    }
+
+    /**
+     * @param array<mixed> $data
+     * @param Context      $context
+     *
+     * @return string
+     */
+    public function shortenedRecursiveExport(&$data, Context $context = null)
+    {
+        $result   = [];
+        $exporter = new self();
+
+        if (!$context) {
+            $context = new Context;
+        }
+
+        $array = $data;
+        $context->add($data);
+
+        foreach ($array as $key => $value) {
+            if (is_array($value)) {
+                if ($context->contains($data[$key]) !== false) {
+                    $result[] = '*RECURSION*';
+                } else {
+                    $result[] = sprintf(
+                        'array(%s)',
+                        $this->shortenedRecursiveExport($data[$key], $context)
+                    );
+                }
+            } else {
+                $result[] = $exporter->shortenedExport($value);
+            }
+        }
+
+        return implode(', ', $result);
+    }
+
+    /**
+     * Exports a value into a single-line string.
+     *
+     * The output of this method is similar to the output of
+     * SebastianBergmann\Exporter\Exporter::export().
+     *
+     * Newlines are replaced by the visible string '\n'.
+     * Contents of arrays and objects (if any) are replaced by '...'.
+     *
+     * @return string
+     *
+     * @see    SebastianBergmann\Exporter\Exporter::export
+     */
+    public function shortenedExport($value)
+    {
+        if (is_string($value)) {
+            $string = str_replace("\n", '', $this->export($value));
+
+            if (function_exists('mb_strlen')) {
+                if (mb_strlen($string) > 40) {
+                    $string = mb_substr($string, 0, 30) . '...' . mb_substr($string, -7);
+                }
+            } else {
+                if (strlen($string) > 40) {
+                    $string = substr($string, 0, 30) . '...' . substr($string, -7);
+                }
+            }
+
+            return $string;
+        }
+
+        if (is_object($value)) {
+            return sprintf(
+                '%s Object (%s)',
+                get_class($value),
+                count($this->toArray($value)) > 0 ? '...' : ''
+            );
+        }
+
+        if (is_array($value)) {
+            return sprintf(
+                'Array (%s)',
+                count($value) > 0 ? '...' : ''
+            );
+        }
+
+        return $this->export($value);
+    }
+
+    /**
+     * Converts an object to an array containing all of its private, protected
+     * and public properties.
+     *
+     * @return array
+     */
+    public function toArray($value)
+    {
+        if (!is_object($value)) {
+            return (array) $value;
+        }
+
+        $array = [];
+
+        foreach ((array) $value as $key => $val) {
+            // Exception traces commonly reference hundreds to thousands of
+            // objects currently loaded in memory. Including them in the result
+            // has a severe negative performance impact.
+            if ("\0Error\0trace" === $key || "\0Exception\0trace" === $key) {
+                continue;
+            }
+
+            // properties are transformed to keys in the following way:
+            // private   $property => "\0Classname\0property"
+            // protected $property => "\0*\0property"
+            // public    $property => "property"
+            if (preg_match('/^\0.+\0(.+)$/', (string) $key, $matches)) {
+                $key = $matches[1];
+            }
+
+            // See https://github.com/php/php-src/commit/5721132
+            if ($key === "\0gcdata") {
+                continue;
+            }
+
+            $array[$key] = $val;
+        }
+
+        // Some internal classes like SplObjectStorage don't work with the
+        // above (fast) mechanism nor with reflection in Zend.
+        // Format the output similarly to print_r() in this case
+        if ($value instanceof SplObjectStorage) {
+            foreach ($value as $key => $val) {
+                $array[spl_object_hash($val)] = [
+                    'obj' => $val,
+                    'inf' => $value->getInfo(),
+                ];
+            }
+        }
+
+        return $array;
+    }
+
+    /**
+     * Recursive implementation of export.
+     *
+     * @param mixed                                       $value       The value to export
+     * @param int                                         $indentation The indentation level of the 2nd+ line
+     * @param \SebastianBergmann\RecursionContext\Context $processed   Previously processed objects
+     *
+     * @return string
+     *
+     * @see    SebastianBergmann\Exporter\Exporter::export
+     */
+    protected function recursiveExport(&$value, $indentation, $processed = null)
+    {
+        if ($value === null) {
+            return 'null';
+        }
+
+        if ($value === true) {
+            return 'true';
+        }
+
+        if ($value === false) {
+            return 'false';
+        }
+
+        if (is_float($value) && (float) ((int) $value) === $value) {
+            return "{$value}.0";
+        }
+
+        if (gettype($value) === 'resource (closed)') {
+            return 'resource (closed)';
+        }
+
+        if (is_resource($value)) {
+            return sprintf(
+                'resource(%d) of type (%s)',
+                $value,
+                get_resource_type($value)
+            );
+        }
+
+        if (is_string($value)) {
+            // Match for most non printable chars somewhat taking multibyte chars into account
+            if (preg_match('/[^\x09-\x0d\x1b\x20-\xff]/', $value)) {
+                return 'Binary String: 0x' . bin2hex($value);
+            }
+
+            return "'" .
+            str_replace(
+                '<lf>',
+                "\n",
+                str_replace(
+                    ["\r\n", "\n\r", "\r", "\n"],
+                    ['\r\n<lf>', '\n\r<lf>', '\r<lf>', '\n<lf>'],
+                    $value
+                )
+            ) .
+            "'";
+        }
+
+        $whitespace = str_repeat(' ', 4 * $indentation);
+
+        if (!$processed) {
+            $processed = new Context;
+        }
+
+        if (is_array($value)) {
+            if (($key = $processed->contains($value)) !== false) {
+                return 'Array &' . $key;
+            }
+
+            $array  = $value;
+            $key    = $processed->add($value);
+            $values = '';
+
+            if (count($array) > 0) {
+                foreach ($array as $k => $v) {
+                    $values .= sprintf(
+                        '%s    %s => %s' . "\n",
+                        $whitespace,
+                        $this->recursiveExport($k, $indentation),
+                        $this->recursiveExport($value[$k], $indentation + 1, $processed)
+                    );
+                }
+
+                $values = "\n" . $values . $whitespace;
+            }
+
+            return sprintf('Array &%s (%s)', $key, $values);
+        }
+
+        if (is_object($value)) {
+            $class = get_class($value);
+
+            if ($hash = $processed->contains($value)) {
+                return sprintf('%s Object &%s', $class, $hash);
+            }
+
+            $hash   = $processed->add($value);
+            $values = '';
+            $array  = $this->toArray($value);
+
+            if (count($array) > 0) {
+                foreach ($array as $k => $v) {
+                    $values .= sprintf(
+                        '%s    %s => %s' . "\n",
+                        $whitespace,
+                        $this->recursiveExport($k, $indentation),
+                        $this->recursiveExport($v, $indentation + 1, $processed)
+                    );
+                }
+
+                $values = "\n" . $values . $whitespace;
+            }
+
+            return sprintf('%s Object &%s (%s)', $class, $hash, $values);
+        }
+
+        return var_export($value, true);
+    }
+}