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vendor/zendframework/zend-config/CHANGELOG.md

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+# Changelog
+
+All notable changes to this project will be documented in this file, in reverse chronological order by release.
+
+## 3.3.0 - 2019-06-08
+
+### Added
+
+- [#54](https://github.com/zendframework/zend-config/pull/54) adds support for PHP 7.3.
+- [#58](https://github.com/zendframework/zend-config/pull/58) adds
+  `$processSections` to INI reader, allowing control over whether sections
+  should be parsed or not
+- [#63](https://github.com/zendframework/zend-config/pull/63) adds .yml to
+  Zend\Config\Factory as an alternative extension for yaml
+
+### Changed
+
+- Nothing.
+
+### Deprecated
+
+- Nothing.
+
+### Removed
+
+- Nothing.
+
+### Fixed
+
+- Nothing.
+
+## 3.2.0 - 2018-04-24
+
+### Added
+
+- [#47](https://github.com/zendframework/zend-config/pull/47) adds `Zend\Config\Writer\JavaProperties`, a complement to
+  `Zend\Config\Reader\JavaProperties`, for writing JavaProperties files from configuration. The writer supports
+  specifying an alternate key/value delimiter (the default is ":") via the constructor.
+
+- [#46](https://github.com/zendframework/zend-config/pull/46) adds a constructor option to the JavaProperties reader to allow
+  users to indicate keys and values from the configuration should be trimmed of whitespace:
+
+  ```php
+  $reader = new JavaProperties(
+    JavaProperties::DELIMITER_DEFAULT, // or ":"
+    JavaProperties::WHITESPACE_TRIM,   // or true; default is false
+  );
+  ```
+
+- [#45](https://github.com/zendframework/zend-config/pull/45) adds the ability to specify an alternate key/value delimiter to
+  the JavaProperties config reader via the constructor: `$reader = new JavaProperties("=");`.
+
+- [#42](https://github.com/zendframework/zend-config/pull/42) adds support for PHP 7.1 and 7.2.
+
+### Changed
+
+- Nothing.
+
+### Deprecated
+
+- Nothing.
+
+### Removed
+
+- [#42](https://github.com/zendframework/zend-config/pull/42) removes support for HHVM.
+
+### Fixed
+
+- Nothing.
+
+## 3.1.0 - 2017-02-22
+
+### Added
+
+- [#37](https://github.com/zendframework/zend-config/pull/37) adds a new method,
+  `enableKeyProcessing()`, and constructor argument, `$enableKeyProcessing =
+  false`,  to each of the `Token` and `Constant` processors. These allow enabling
+  processing of tokens and/or constants encountered in configuration key values.
+
+- [#37](https://github.com/zendframework/zend-config/pull/37) adds the ability
+  for the `Constant` processor to process class constants, including the
+  `::class` pseudo-constant.
+
+### Deprecated
+
+- Nothing.
+
+### Removed
+
+- Nothing.
+
+### Fixed
+
+- Nothing.
+
+## 3.0.0 - 2017-02-16
+
+### Added
+
+- [#36](https://github.com/zendframework/zend-config/pull/36) adds support for
+  [PSR-11](http://www.php-fig.org/psr/psr-11/).
+
+- [#36](https://github.com/zendframework/zend-config/pull/36) adds the class
+  `Zend\Config\StandaloneReaderPluginManager` for managing config reader plugins.
+  This implementation implements the PSR-11 `ContainerInterface`, and uses a
+  hard-coded list of reader plugins.
+
+- [#36](https://github.com/zendframework/zend-config/pull/36) adds the class
+  `Zend\Config\StandaloneWriterPluginManager` for managing config writer plugins.
+  This implementation implements the PSR-11 `ContainerInterface`, and uses a
+  hard-coded list of writer plugins.
+
+### Changes
+
+- [#36](https://github.com/zendframework/zend-config/pull/36) updates the
+  `Zend\Config\Factory::getReaderPluginManager()` method to lazy-load a
+  `StandaloneReaderPluginManager` by default, instead of a
+  `ReaderPluginManager`, allowing usage out-of-the-box without requiring
+  zend-servicemanager.
+
+- [#36](https://github.com/zendframework/zend-config/pull/36) updates the
+  `Zend\Config\Factory::setReaderPluginManager()` method to typehint against
+  `Psr\Container\ContainerInterface` instead of `ReaderPluginManager`. If you
+  were extending and overriding that method, you will need to update your
+  signature.
+
+- [#36](https://github.com/zendframework/zend-config/pull/36) updates the
+  `Zend\Config\Factory::getWriterPluginManager()` method to lazy-load a
+  `StandaloneWriterPluginManager` by default, instead of a
+  `WriterPluginManager`, allowing usage out-of-the-box without requiring
+  zend-servicemanager.
+
+- [#36](https://github.com/zendframework/zend-config/pull/36) updates the
+  `Zend\Config\Factory::setWriterPluginManager()` method to typehint against
+  `Psr\Container\ContainerInterface` instead of `WriterPluginManager`. If you
+  were extending and overriding that method, you will need to update your
+  signature.
+
+### Deprecated
+
+- Nothing.
+
+### Removed
+
+- [#36](https://github.com/zendframework/zend-config/pull/36) removes usage of
+  zend-json as a JSON de/serializer in the JSON writer and reader; the
+  component now requires ext/json is installed to use these features.
+
+### Fixed
+
+- Nothing.
+
+## 2.6.0 - 2016-02-04
+
+### Added
+
+- [#6](https://github.com/zendframework/zend-config/pull/6) adds the ability for
+  the `PhpArray` writer to optionally translate strings that evaluate to known
+  classes to `ClassName::class` syntax; the feature works for both keys and
+  values.
+- [#21](https://github.com/zendframework/zend-config/pull/21) adds revised
+  documentation, and publishes it to https://zendframework.github.io/zend-config/
+
+### Deprecated
+
+- Nothing.
+
+### Removed
+
+- Nothing.
+
+### Fixed
+
+- [#8](https://github.com/zendframework/zend-config/pull/8),
+  [#18](https://github.com/zendframework/zend-config/pull/18), and
+  [#20](https://github.com/zendframework/zend-config/pull/20) update the
+  code base to make it forwards-compatible with the v3.0 versions of
+  zend-stdlib and zend-servicemanager. Primarily, this involved:
+  - Updating the `AbstractConfigFactory` to implement the new methods in the
+    v3 `AbstractFactoryInterface` definition, and updating the v2 methods to
+    proxy to those.
+  - Updating `ReaderPluginManager` and `WriterPluginManager` to follow the
+    changes to `AbstractPluginManager`. In particular, instead of defining
+    invokables, they now define a combination of aliases and factories (using
+    the new `InvokableFactory`); additionally, they each now implement both
+    `validatePlugin()` from v2 and `validate()` from v3.
+  - Pinning to stable versions of already updated components.
+  - Selectively omitting zend-i18n-reliant tests when testing against
+    zend-servicemanager v3.

vendor/zendframework/zend-config/LICENSE.md

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+Copyright (c) 2005-2018, Zend Technologies USA, Inc.
+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 Zend Technologies USA, Inc. nor the names of its
+  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.

vendor/zendframework/zend-config/README.md

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+# zend-config
+
+[![Build Status](https://secure.travis-ci.org/zendframework/zend-config.svg?branch=master)](https://secure.travis-ci.org/zendframework/zend-config)
+[![Coverage Status](https://coveralls.io/repos/github/zendframework/zend-config/badge.svg?branch=master)](https://coveralls.io/github/zendframework/zend-config?branch=master)
+
+zend-config is designed to simplify access to configuration data within
+applications. It provides a nested object property-based user interface for
+accessing this configuration data within application code. The configuration
+data may come from a variety of media supporting hierarchical data storage.
+
+- File issues at https://github.com/zendframework/zend-config/issues
+- Documentation is at https://docs.zendframework.com/zend-config/

vendor/zendframework/zend-config/composer.json

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+{
+    "name": "zendframework/zend-config",
+    "description": "provides a nested object property based user interface for accessing this configuration data within application code",
+    "license": "BSD-3-Clause",
+    "keywords": [
+        "zf",
+        "zendframework",
+        "config"
+    ],
+    "support": {
+        "docs": "https://docs.zendframework.com/zend-config/",
+        "issues": "https://github.com/zendframework/zend-config/issues",
+        "source": "https://github.com/zendframework/zend-config",
+        "rss": "https://github.com/zendframework/zend-config/releases.atom",
+        "chat": "https://zendframework-slack.herokuapp.com",
+        "forum": "https://discourse.zendframework.com/c/questions/components"
+    },
+    "require": {
+        "php": "^5.6 || ^7.0",
+        "ext-json": "*",
+        "zendframework/zend-stdlib": "^2.7.7 || ^3.1",
+        "psr/container": "^1.0"
+    },
+    "require-dev": {
+        "malukenho/docheader": "^0.1.6",
+        "phpunit/phpunit": "^5.7.27 || ^6.5.8 || ^7.1.2",
+        "zendframework/zend-coding-standard": "~1.0.0",
+        "zendframework/zend-filter": "^2.7.2",
+        "zendframework/zend-i18n": "^2.7.4",
+        "zendframework/zend-servicemanager": "^2.7.8 || ^3.3"
+    },
+    "conflict": {
+        "container-interop/container-interop": "<1.2.0"
+    },
+    "suggest": {
+        "zendframework/zend-filter": "^2.7.2; install if you want to use the Filter processor",
+        "zendframework/zend-i18n": "^2.7.4; install if you want to use the Translator processor",
+        "zendframework/zend-servicemanager": "^2.7.8 || ^3.3; if you need an extensible plugin manager for use with the Config Factory"
+    },
+    "autoload": {
+        "psr-4": {
+            "Zend\\Config\\": "src/"
+        }
+    },
+    "autoload-dev": {
+        "psr-4": {
+            "ZendTest\\Config\\": "test/"
+        }
+    },
+    "config": {
+        "sort-packages": true
+    },
+    "extra": {
+        "branch-alias": {
+            "dev-master": "3.3.x-dev",
+            "dev-develop": "3.4.x-dev"
+        }
+    },
+    "scripts": {
+        "check": [
+            "@license-check",
+            "@cs-check",
+            "@test"
+        ],
+        "cs-check": "phpcs",
+        "cs-fix": "phpcbf",
+        "test": "phpunit --colors=always",
+        "test-coverage": "phpunit --colors=always --coverage-clover clover.xml",
+        "license-check": "docheader check src/"
+    }
+}

vendor/zendframework/zend-config/src/AbstractConfigFactory.php

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+<?php
+/**
+ * @see       https://github.com/zendframework/zend-config for the canonical source repository
+ * @copyright Copyright (c) 2005-2017 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-config/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Config;
+
+use Interop\Container\ContainerInterface;
+use Traversable;
+use Zend\ServiceManager\AbstractFactoryInterface;
+use Zend\ServiceManager\ServiceLocatorInterface;
+
+/**
+ * Class AbstractConfigFactory
+ */
+class AbstractConfigFactory implements AbstractFactoryInterface
+{
+    /**
+     * @var array
+     */
+    protected $configs = [];
+
+    /**
+     * @var string[]
+     */
+    protected $defaultPatterns = [
+        '#config[\._-](.*)$#i',
+        '#^(.*)[\\\\\._-]config$#i'
+    ];
+
+    /**
+     * @var string[]
+     */
+    protected $patterns;
+
+    /**
+     * Determine if we can create a service with name (SM v2)
+     *
+     * @param ServiceLocatorInterface $serviceLocator
+     * @param $name
+     * @param $requestedName
+     * @return bool
+     */
+    public function canCreateServiceWithName(ServiceLocatorInterface $serviceLocator, $name, $requestedName)
+    {
+        return $this->canCreate($serviceLocator, $requestedName);
+    }
+
+    /**
+     * Determine if we can create a service (SM v3)
+     *
+     * @param ContainerInterface $container
+     * @param string $requestedName
+     * @return bool
+     */
+    public function canCreate(ContainerInterface $container, $requestedName)
+    {
+        if (isset($this->configs[$requestedName])) {
+            return true;
+        }
+
+        if (! $container->has('Config')) {
+            return false;
+        }
+
+        $key = $this->match($requestedName);
+        if (null === $key) {
+            return false;
+        }
+
+        $config = $container->get('Config');
+        return isset($config[$key]);
+    }
+
+    /**
+     * Create service with name (SM v2)
+     *
+     * @param ServiceLocatorInterface $serviceLocator
+     * @param string $name
+     * @param string $requestedName
+     * @return string|mixed|array
+     */
+    public function createServiceWithName(ServiceLocatorInterface $serviceLocator, $name, $requestedName)
+    {
+        return $this($serviceLocator, $requestedName);
+    }
+
+    /**
+     * Create service with name (SM v3)
+     *
+     * @param ContainerInterface $container
+     * @param string $requestedName
+     * @param array $options
+     * @return string|mixed|array
+     */
+    public function __invoke(ContainerInterface $container, $requestedName, array $options = null)
+    {
+        if (isset($this->configs[$requestedName])) {
+            return $this->configs[$requestedName];
+        }
+
+        $key = $this->match($requestedName);
+        if (isset($this->configs[$key])) {
+            $this->configs[$requestedName] = $this->configs[$key];
+            return $this->configs[$key];
+        }
+
+        $config = $container->get('Config');
+        $this->configs[$requestedName] = $this->configs[$key] = $config[$key];
+        return $config[$key];
+    }
+
+    /**
+     * @param string $pattern
+     * @return self
+     * @throws Exception\InvalidArgumentException
+     */
+    public function addPattern($pattern)
+    {
+        if (! is_string($pattern)) {
+            throw new Exception\InvalidArgumentException('pattern must be string');
+        }
+
+        $patterns = $this->getPatterns();
+        array_unshift($patterns, $pattern);
+        $this->setPatterns($patterns);
+        return $this;
+    }
+
+    /**
+     * @param array|Traversable $patterns
+     * @return self
+     * @throws Exception\InvalidArgumentException
+     */
+    public function addPatterns($patterns)
+    {
+        if ($patterns instanceof Traversable) {
+            $patterns = iterator_to_array($patterns);
+        }
+
+        if (! is_array($patterns)) {
+            throw new Exception\InvalidArgumentException("patterns must be array or Traversable");
+        }
+
+        foreach ($patterns as $pattern) {
+            $this->addPattern($pattern);
+        }
+
+        return $this;
+    }
+
+    /**
+     * @param array|Traversable $patterns
+     * @return self
+     * @throws \InvalidArgumentException
+     */
+    public function setPatterns($patterns)
+    {
+        if ($patterns instanceof Traversable) {
+            $patterns = iterator_to_array($patterns);
+        }
+
+        if (! is_array($patterns)) {
+            throw new \InvalidArgumentException("patterns must be array or Traversable");
+        }
+
+        $this->patterns = $patterns;
+        return $this;
+    }
+
+    /**
+     * @return array
+     */
+    public function getPatterns()
+    {
+        if (null === $this->patterns) {
+            $this->setPatterns($this->defaultPatterns);
+        }
+        return $this->patterns;
+    }
+
+    /**
+     * @param string $requestedName
+     * @return null|string
+     */
+    protected function match($requestedName)
+    {
+        foreach ($this->getPatterns() as $pattern) {
+            if (preg_match($pattern, $requestedName, $matches)) {
+                return $matches[1];
+            }
+        }
+        return null;
+    }
+}

vendor/zendframework/zend-config/src/Config.php

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+<?php
+/**
+ * @see       https://github.com/zendframework/zend-config for the canonical source repository
+ * @copyright Copyright (c) 2005-2017 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-config/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Config;
+
+use ArrayAccess;
+use Countable;
+use Iterator;
+
+/**
+ * Provides a property based interface to an array.
+ * The data are read-only unless $allowModifications is set to true
+ * on construction.
+ *
+ * Implements Countable, Iterator and ArrayAccess
+ * to facilitate easy access to the data.
+ */
+class Config implements Countable, Iterator, ArrayAccess
+{
+    /**
+     * Whether modifications to configuration data are allowed.
+     *
+     * @var bool
+     */
+    protected $allowModifications;
+
+    /**
+     * Data within the configuration.
+     *
+     * @var array
+     */
+    protected $data = [];
+
+    /**
+     * Used when unsetting values during iteration to ensure we do not skip
+     * the next element.
+     *
+     * @var bool
+     */
+    protected $skipNextIteration;
+
+    /**
+     * Constructor.
+     *
+     * Data is read-only unless $allowModifications is set to true
+     * on construction.
+     *
+     * @param  array   $array
+     * @param  bool $allowModifications
+     */
+    public function __construct(array $array, $allowModifications = false)
+    {
+        $this->allowModifications = (bool) $allowModifications;
+
+        foreach ($array as $key => $value) {
+            if (is_array($value)) {
+                $this->data[$key] = new static($value, $this->allowModifications);
+            } else {
+                $this->data[$key] = $value;
+            }
+        }
+    }
+
+    /**
+     * Retrieve a value and return $default if there is no element set.
+     *
+     * @param  string $name
+     * @param  mixed  $default
+     * @return mixed
+     */
+    public function get($name, $default = null)
+    {
+        if (array_key_exists($name, $this->data)) {
+            return $this->data[$name];
+        }
+
+        return $default;
+    }
+
+    /**
+     * Magic function so that $obj->value will work.
+     *
+     * @param  string $name
+     * @return mixed
+     */
+    public function __get($name)
+    {
+        return $this->get($name);
+    }
+
+    /**
+     * Set a value in the config.
+     *
+     * Only allow setting of a property if $allowModifications  was set to true
+     * on construction. Otherwise, throw an exception.
+     *
+     * @param  string $name
+     * @param  mixed  $value
+     * @return void
+     * @throws Exception\RuntimeException
+     */
+    public function __set($name, $value)
+    {
+        if ($this->allowModifications) {
+            if (is_array($value)) {
+                $value = new static($value, true);
+            }
+
+            if (null === $name) {
+                $this->data[] = $value;
+            } else {
+                $this->data[$name] = $value;
+            }
+        } else {
+            throw new Exception\RuntimeException('Config is read only');
+        }
+    }
+
+    /**
+     * Deep clone of this instance to ensure that nested Zend\Configs are also
+     * cloned.
+     *
+     * @return void
+     */
+    public function __clone()
+    {
+        $array = [];
+
+        foreach ($this->data as $key => $value) {
+            if ($value instanceof self) {
+                $array[$key] = clone $value;
+            } else {
+                $array[$key] = $value;
+            }
+        }
+
+        $this->data = $array;
+    }
+
+    /**
+     * Return an associative array of the stored data.
+     *
+     * @return array
+     */
+    public function toArray()
+    {
+        $array = [];
+        $data  = $this->data;
+
+        /** @var self $value */
+        foreach ($data as $key => $value) {
+            if ($value instanceof self) {
+                $array[$key] = $value->toArray();
+            } else {
+                $array[$key] = $value;
+            }
+        }
+
+        return $array;
+    }
+
+    /**
+     * isset() overloading
+     *
+     * @param  string $name
+     * @return bool
+     */
+    public function __isset($name)
+    {
+        return isset($this->data[$name]);
+    }
+
+    /**
+     * unset() overloading
+     *
+     * @param  string $name
+     * @return void
+     * @throws Exception\InvalidArgumentException
+     */
+    public function __unset($name)
+    {
+        if (! $this->allowModifications) {
+            throw new Exception\InvalidArgumentException('Config is read only');
+        } elseif (isset($this->data[$name])) {
+            unset($this->data[$name]);
+            $this->skipNextIteration = true;
+        }
+    }
+
+    /**
+     * count(): defined by Countable interface.
+     *
+     * @see    Countable::count()
+     * @return int
+     */
+    public function count()
+    {
+        return count($this->data);
+    }
+
+    /**
+     * current(): defined by Iterator interface.
+     *
+     * @see    Iterator::current()
+     * @return mixed
+     */
+    public function current()
+    {
+        $this->skipNextIteration = false;
+        return current($this->data);
+    }
+
+    /**
+     * key(): defined by Iterator interface.
+     *
+     * @see    Iterator::key()
+     * @return mixed
+     */
+    public function key()
+    {
+        return key($this->data);
+    }
+
+    /**
+     * next(): defined by Iterator interface.
+     *
+     * @see    Iterator::next()
+     * @return void
+     */
+    public function next()
+    {
+        if ($this->skipNextIteration) {
+            $this->skipNextIteration = false;
+            return;
+        }
+
+        next($this->data);
+    }
+
+    /**
+     * rewind(): defined by Iterator interface.
+     *
+     * @see    Iterator::rewind()
+     * @return void
+     */
+    public function rewind()
+    {
+        $this->skipNextIteration = false;
+        reset($this->data);
+    }
+
+    /**
+     * valid(): defined by Iterator interface.
+     *
+     * @see    Iterator::valid()
+     * @return bool
+     */
+    public function valid()
+    {
+        return ($this->key() !== null);
+    }
+
+    /**
+     * offsetExists(): defined by ArrayAccess interface.
+     *
+     * @see    ArrayAccess::offsetExists()
+     * @param  mixed $offset
+     * @return bool
+     */
+    public function offsetExists($offset)
+    {
+        return $this->__isset($offset);
+    }
+
+    /**
+     * offsetGet(): defined by ArrayAccess interface.
+     *
+     * @see    ArrayAccess::offsetGet()
+     * @param  mixed $offset
+     * @return mixed
+     */
+    public function offsetGet($offset)
+    {
+        return $this->__get($offset);
+    }
+
+    /**
+     * offsetSet(): defined by ArrayAccess interface.
+     *
+     * @see    ArrayAccess::offsetSet()
+     * @param  mixed $offset
+     * @param  mixed $value
+     * @return void
+     */
+    public function offsetSet($offset, $value)
+    {
+        $this->__set($offset, $value);
+    }
+
+    /**
+     * offsetUnset(): defined by ArrayAccess interface.
+     *
+     * @see    ArrayAccess::offsetUnset()
+     * @param  mixed $offset
+     * @return void
+     */
+    public function offsetUnset($offset)
+    {
+        $this->__unset($offset);
+    }
+
+    /**
+     * Merge another Config with this one.
+     *
+     * For duplicate keys, the following will be performed:
+     * - Nested Configs will be recursively merged.
+     * - Items in $merge with INTEGER keys will be appended.
+     * - Items in $merge with STRING keys will overwrite current values.
+     *
+     * @param  Config $merge
+     * @return self
+     */
+    public function merge(Config $merge)
+    {
+        /** @var Config $value */
+        foreach ($merge as $key => $value) {
+            if (array_key_exists($key, $this->data)) {
+                if (is_int($key)) {
+                    $this->data[] = $value;
+                } elseif ($value instanceof self && $this->data[$key] instanceof self) {
+                    $this->data[$key]->merge($value);
+                } else {
+                    if ($value instanceof self) {
+                        $this->data[$key] = new static($value->toArray(), $this->allowModifications);
+                    } else {
+                        $this->data[$key] = $value;
+                    }
+                }
+            } else {
+                if ($value instanceof self) {
+                    $this->data[$key] = new static($value->toArray(), $this->allowModifications);
+                } else {
+                    $this->data[$key] = $value;
+                }
+            }
+        }
+
+        return $this;
+    }
+
+    /**
+     * Prevent any more modifications being made to this instance.
+     *
+     * Useful after merge() has been used to merge multiple Config objects
+     * into one object which should then not be modified again.
+     *
+     * @return void
+     */
+    public function setReadOnly()
+    {
+        $this->allowModifications = false;
+
+        /** @var Config $value */
+        foreach ($this->data as $value) {
+            if ($value instanceof self) {
+                $value->setReadOnly();
+            }
+        }
+    }
+
+    /**
+     * Returns whether this Config object is read only or not.
+     *
+     * @return bool
+     */
+    public function isReadOnly()
+    {
+        return ! $this->allowModifications;
+    }
+}

vendor/zendframework/zend-config/src/Exception/ExceptionInterface.php

@@ -0,0 +1,12 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-config for the canonical source repository
+ * @copyright Copyright (c) 2005-2017 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-config/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Config\Exception;
+
+interface ExceptionInterface
+{
+}

vendor/zendframework/zend-config/src/Exception/InvalidArgumentException.php

@@ -0,0 +1,12 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-config for the canonical source repository
+ * @copyright Copyright (c) 2005-2017 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-config/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Config\Exception;
+
+class InvalidArgumentException extends \InvalidArgumentException implements ExceptionInterface
+{
+}

vendor/zendframework/zend-config/src/Exception/PluginNotFoundException.php

@@ -0,0 +1,15 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-config for the canonical source repository
+ * @copyright Copyright (c) 2017 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-config/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Config\Exception;
+
+use Psr\Container\NotFoundExceptionInterface;
+
+class PluginNotFoundException extends RuntimeException implements
+    NotFoundExceptionInterface
+{
+}

vendor/zendframework/zend-config/src/Exception/RuntimeException.php

@@ -0,0 +1,12 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-config for the canonical source repository
+ * @copyright Copyright (c) 2005-2017 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-config/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Config\Exception;
+
+class RuntimeException extends \RuntimeException implements ExceptionInterface
+{
+}

vendor/zendframework/zend-config/src/Exception/UnprocessableConfigException.php

@@ -0,0 +1,12 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-config for the canonical source repository
+ * @copyright Copyright (c) 2018 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-config/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Config\Exception;
+
+class UnprocessableConfigException extends RuntimeException
+{
+}

vendor/zendframework/zend-config/src/Factory.php

@@ -0,0 +1,306 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-config for the canonical source repository
+ * @copyright Copyright (c) 2005-2017 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-config/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Config;
+
+use Psr\Container\ContainerInterface;
+use Zend\Stdlib\ArrayUtils;
+
+class Factory
+{
+    /**
+     * Plugin manager for loading readers
+     *
+     * @var null|ContainerInterface
+     */
+    public static $readers = null;
+
+    /**
+     * Plugin manager for loading writers
+     *
+     * @var null|ContainerInterface
+     */
+    public static $writers = null;
+
+    /**
+     * Registered config file extensions.
+     * key is extension, value is reader instance or plugin name
+     *
+     * @var array
+     */
+    protected static $extensions = [
+        'ini'         => 'ini',
+        'json'        => 'json',
+        'xml'         => 'xml',
+        'yaml'        => 'yaml',
+        'yml'         => 'yaml',
+        'properties'  => 'javaproperties',
+    ];
+
+    /**
+     * Register config file extensions for writing
+     * key is extension, value is writer instance or plugin name
+     *
+     * @var array
+     */
+    protected static $writerExtensions = [
+        'php'  => 'php',
+        'ini'  => 'ini',
+        'json' => 'json',
+        'xml'  => 'xml',
+        'yaml' => 'yaml',
+        'yml'  => 'yaml',
+    ];
+
+    /**
+     * Read a config from a file.
+     *
+     * @param  string  $filename
+     * @param  bool $returnConfigObject
+     * @param  bool $useIncludePath
+     * @return array|Config
+     * @throws Exception\InvalidArgumentException
+     * @throws Exception\RuntimeException
+     */
+    public static function fromFile($filename, $returnConfigObject = false, $useIncludePath = false)
+    {
+        $filepath = $filename;
+        if (! file_exists($filename)) {
+            if (! $useIncludePath) {
+                throw new Exception\RuntimeException(sprintf(
+                    'Filename "%s" cannot be found relative to the working directory',
+                    $filename
+                ));
+            }
+
+            $fromIncludePath = stream_resolve_include_path($filename);
+            if (! $fromIncludePath) {
+                throw new Exception\RuntimeException(sprintf(
+                    'Filename "%s" cannot be found relative to the working directory or the include_path ("%s")',
+                    $filename,
+                    get_include_path()
+                ));
+            }
+            $filepath = $fromIncludePath;
+        }
+
+        $pathinfo = pathinfo($filepath);
+
+        if (! isset($pathinfo['extension'])) {
+            throw new Exception\RuntimeException(sprintf(
+                'Filename "%s" is missing an extension and cannot be auto-detected',
+                $filename
+            ));
+        }
+
+        $extension = strtolower($pathinfo['extension']);
+
+        if ($extension === 'php') {
+            if (! is_file($filepath) || ! is_readable($filepath)) {
+                throw new Exception\RuntimeException(sprintf(
+                    "File '%s' doesn't exist or not readable",
+                    $filename
+                ));
+            }
+
+            $config = include $filepath;
+        } elseif (isset(static::$extensions[$extension])) {
+            $reader = static::$extensions[$extension];
+            if (! $reader instanceof Reader\ReaderInterface) {
+                $reader = static::getReaderPluginManager()->get($reader);
+                static::$extensions[$extension] = $reader;
+            }
+
+            /* @var Reader\ReaderInterface $reader */
+            $config = $reader->fromFile($filepath);
+        } else {
+            throw new Exception\RuntimeException(sprintf(
+                'Unsupported config file extension: .%s',
+                $pathinfo['extension']
+            ));
+        }
+
+        return ($returnConfigObject) ? new Config($config) : $config;
+    }
+
+    /**
+     * Read configuration from multiple files and merge them.
+     *
+     * @param  array   $files
+     * @param  bool $returnConfigObject
+     * @param  bool $useIncludePath
+     * @return array|Config
+     */
+    public static function fromFiles(array $files, $returnConfigObject = false, $useIncludePath = false)
+    {
+        $config = [];
+
+        foreach ($files as $file) {
+            $config = ArrayUtils::merge($config, static::fromFile($file, false, $useIncludePath));
+        }
+
+        return ($returnConfigObject) ? new Config($config) : $config;
+    }
+
+    /**
+     * Writes a config to a file
+     *
+     * @param string $filename
+     * @param array|Config $config
+     * @return bool TRUE on success | FALSE on failure
+     * @throws Exception\RuntimeException
+     * @throws Exception\InvalidArgumentException
+     */
+    public static function toFile($filename, $config)
+    {
+        if ((is_object($config) && ! ($config instanceof Config))
+            || (! is_object($config) && ! is_array($config))
+        ) {
+            throw new Exception\InvalidArgumentException(
+                __METHOD__." \$config should be an array or instance of Zend\\Config\\Config"
+            );
+        }
+
+        $extension = substr(strrchr($filename, '.'), 1);
+        $directory = dirname($filename);
+
+        if (! is_dir($directory)) {
+            throw new Exception\RuntimeException(
+                "Directory '{$directory}' does not exists!"
+            );
+        }
+
+        if (! is_writable($directory)) {
+            throw new Exception\RuntimeException(
+                "Cannot write in directory '{$directory}'"
+            );
+        }
+
+        if (! isset(static::$writerExtensions[$extension])) {
+            throw new Exception\RuntimeException(
+                "Unsupported config file extension: '.{$extension}' for writing."
+            );
+        }
+
+        $writer = static::$writerExtensions[$extension];
+        if (($writer instanceof Writer\AbstractWriter) === false) {
+            $writer = self::getWriterPluginManager()->get($writer);
+            static::$writerExtensions[$extension] = $writer;
+        }
+
+        if (is_object($config)) {
+            $config = $config->toArray();
+        }
+
+        $content = $writer->processConfig($config);
+
+        return (bool) (file_put_contents($filename, $content) !== false);
+    }
+
+    /**
+     * Set reader plugin manager
+     *
+     * @param ContainerInterface $readers
+     * @return void
+     */
+    public static function setReaderPluginManager(ContainerInterface $readers)
+    {
+        static::$readers = $readers;
+    }
+
+    /**
+     * Get the reader plugin manager.
+     *
+     * If none is available, registers and returns a
+     * StandaloneReaderPluginManager instance by default.
+     *
+     * @return ContainerInterface
+     */
+    public static function getReaderPluginManager()
+    {
+        if (static::$readers === null) {
+            static::$readers = new StandaloneReaderPluginManager();
+        }
+        return static::$readers;
+    }
+
+    /**
+     * Set writer plugin manager
+     *
+     * @param ContainerInterface $writers
+     * @return void
+     */
+    public static function setWriterPluginManager(ContainerInterface $writers)
+    {
+        static::$writers = $writers;
+    }
+
+    /**
+     * Get the writer plugin manager.
+     *
+     * If none is available, registers and returns a
+     * StandaloneWriterPluginManager instance by default.
+     *
+     * @return ContainerInterface
+     */
+    public static function getWriterPluginManager()
+    {
+        if (static::$writers === null) {
+            static::$writers = new StandaloneWriterPluginManager();
+        }
+
+        return static::$writers;
+    }
+
+    /**
+     * Set config reader for file extension
+     *
+     * @param  string $extension
+     * @param  string|Reader\ReaderInterface $reader
+     * @throws Exception\InvalidArgumentException
+     * @return void
+     */
+    public static function registerReader($extension, $reader)
+    {
+        $extension = strtolower($extension);
+
+        if (! is_string($reader) && ! $reader instanceof Reader\ReaderInterface) {
+            throw new Exception\InvalidArgumentException(sprintf(
+                'Reader should be plugin name, class name or ' .
+                'instance of %s\Reader\ReaderInterface; received "%s"',
+                __NAMESPACE__,
+                (is_object($reader) ? get_class($reader) : gettype($reader))
+            ));
+        }
+
+        static::$extensions[$extension] = $reader;
+    }
+
+    /**
+     * Set config writer for file extension
+     *
+     * @param string $extension
+     * @param string|Writer\AbstractWriter $writer
+     * @throws Exception\InvalidArgumentException
+     * @return void
+     */
+    public static function registerWriter($extension, $writer)
+    {
+        $extension = strtolower($extension);
+
+        if (! is_string($writer) && ! $writer instanceof Writer\AbstractWriter) {
+            throw new Exception\InvalidArgumentException(sprintf(
+                'Writer should be plugin name, class name or ' .
+                'instance of %s\Writer\AbstractWriter; received "%s"',
+                __NAMESPACE__,
+                (is_object($writer) ? get_class($writer) : gettype($writer))
+            ));
+        }
+
+        static::$writerExtensions[$extension] = $writer;
+    }
+}

vendor/zendframework/zend-config/src/Processor/Constant.php

@@ -0,0 +1,130 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-config for the canonical source repository
+ * @copyright Copyright (c) 2005-2017 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-config/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Config\Processor;
+
+class Constant extends Token implements ProcessorInterface
+{
+    /**
+     * Replace only user-defined tokens
+     *
+     * @var bool
+     */
+    protected $userOnly = true;
+
+    /**
+     * Constant Processor walks through a Config structure and replaces all
+     * PHP constants with their respective values
+     *
+     * @param bool $userOnly True to process only user-defined constants,
+     *     false to process all PHP constants; defaults to true.
+     * @param string $prefix Optional prefix
+     * @param string $suffix Optional suffix
+     * @param bool $enableKeyProcessing Whether or not to enable processing of
+     *     constant values in configuration keys; defaults to false.
+     * @return \Zend\Config\Processor\Constant
+     */
+    public function __construct($userOnly = true, $prefix = '', $suffix = '', $enableKeyProcessing = false)
+    {
+        $this->setUserOnly((bool) $userOnly);
+        $this->setPrefix((string) $prefix);
+        $this->setSuffix((string) $suffix);
+
+        if (true === $enableKeyProcessing) {
+            $this->enableKeyProcessing();
+        }
+
+        $this->loadConstants();
+    }
+
+    /**
+     * @return bool
+     */
+    public function getUserOnly()
+    {
+        return $this->userOnly;
+    }
+
+    /**
+     * Should we use only user-defined constants?
+     *
+     * @param  bool $userOnly
+     * @return self
+     */
+    public function setUserOnly($userOnly)
+    {
+        $this->userOnly = (bool) $userOnly;
+        return $this;
+    }
+
+    /**
+     * Load all currently defined constants into parser.
+     *
+     * @return void
+     */
+    public function loadConstants()
+    {
+        if ($this->userOnly) {
+            $constants = get_defined_constants(true);
+            $constants = isset($constants['user']) ? $constants['user'] : [];
+            $this->setTokens($constants);
+        } else {
+            $this->setTokens(get_defined_constants());
+        }
+    }
+
+    /**
+     * Get current token registry.
+     * @return array
+     */
+    public function getTokens()
+    {
+        return $this->tokens;
+    }
+
+    /**
+     * Override processing of individual value.
+     *
+     * If the value is a string and evaluates to a class constant, returns
+     * the class constant value; otherwise, delegates to the parent.
+     *
+     * @param mixed $value
+     * @param array $replacements
+     * @return mixed
+     */
+    protected function doProcess($value, array $replacements)
+    {
+        if (! is_string($value)) {
+            return parent::doProcess($value, $replacements);
+        }
+
+        if (false === strpos($value, '::')) {
+            return parent::doProcess($value, $replacements);
+        }
+
+        // Handle class constants
+        if (defined($value)) {
+            return constant($value);
+        }
+
+        // Handle ::class notation
+        if (! preg_match('/::class$/i', $value)) {
+            return parent::doProcess($value, $replacements);
+        }
+
+        $class = substr($value, 0, -7);
+        if (class_exists($class)) {
+            return $class;
+        }
+
+        // While we've matched ::class, the class does not exist, and PHP will
+        // raise an error if you try to define a constant using that notation.
+        // As such, we have something that cannot possibly be a constant, so we
+        // can safely return the value verbatim.
+        return $value;
+    }
+}

vendor/zendframework/zend-config/src/Processor/Filter.php

@@ -0,0 +1,86 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-config for the canonical source repository
+ * @copyright Copyright (c) 2005-2017 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-config/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Config\Processor;
+
+use Zend\Config\Config;
+use Zend\Config\Exception;
+use Zend\Filter\FilterInterface as ZendFilter;
+
+class Filter implements ProcessorInterface
+{
+    /**
+     * @var ZendFilter
+     */
+    protected $filter;
+
+    /**
+     * Filter all config values using the supplied Zend\Filter
+     *
+     * @param ZendFilter $filter
+     */
+    public function __construct(ZendFilter $filter)
+    {
+        $this->setFilter($filter);
+    }
+
+    /**
+     * @param  ZendFilter $filter
+     * @return self
+     */
+    public function setFilter(ZendFilter $filter)
+    {
+        $this->filter = $filter;
+        return $this;
+    }
+
+    /**
+     * @return ZendFilter
+     */
+    public function getFilter()
+    {
+        return $this->filter;
+    }
+
+    /**
+     * Process
+     *
+     * @param  Config $config
+     * @return Config
+     * @throws Exception\InvalidArgumentException
+     */
+    public function process(Config $config)
+    {
+        if ($config->isReadOnly()) {
+            throw new Exception\InvalidArgumentException('Cannot process config because it is read-only');
+        }
+
+        /**
+         * Walk through config and replace values
+         */
+        foreach ($config as $key => $val) {
+            if ($val instanceof Config) {
+                $this->process($val);
+            } else {
+                $config->$key = $this->filter->filter($val);
+            }
+        }
+
+        return $config;
+    }
+
+    /**
+     * Process a single value
+     *
+     * @param  mixed $value
+     * @return mixed
+     */
+    public function processValue($value)
+    {
+        return $this->filter->filter($value);
+    }
+}

vendor/zendframework/zend-config/src/Processor/ProcessorInterface.php

@@ -0,0 +1,29 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-config for the canonical source repository
+ * @copyright Copyright (c) 2005-2017 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-config/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Config\Processor;
+
+use Zend\Config\Config;
+
+interface ProcessorInterface
+{
+    /**
+     * Process the whole Config structure and recursively parse all its values.
+     *
+     * @param  Config $value
+     * @return Config
+     */
+    public function process(Config $value);
+
+    /**
+     * Process a single value
+     *
+     * @param  mixed $value
+     * @return mixed
+     */
+    public function processValue($value);
+}

vendor/zendframework/zend-config/src/Processor/Queue.php

@@ -0,0 +1,50 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-config for the canonical source repository
+ * @copyright Copyright (c) 2005-2017 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-config/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Config\Processor;
+
+use Zend\Config\Config;
+use Zend\Config\Exception;
+use Zend\Stdlib\PriorityQueue;
+
+class Queue extends PriorityQueue implements ProcessorInterface
+{
+    /**
+     * Process the whole config structure with each parser in the queue.
+     *
+     * @param  Config $config
+     * @return Config
+     * @throws Exception\InvalidArgumentException
+     */
+    public function process(Config $config)
+    {
+        if ($config->isReadOnly()) {
+            throw new Exception\InvalidArgumentException('Cannot process config because it is read-only');
+        }
+
+        foreach ($this as $parser) {
+            /** @var $parser ProcessorInterface */
+            $parser->process($config);
+        }
+    }
+
+    /**
+     * Process a single value
+     *
+     * @param  mixed $value
+     * @return mixed
+     */
+    public function processValue($value)
+    {
+        foreach ($this as $parser) {
+            /** @var $parser ProcessorInterface */
+            $value = $parser->processValue($value);
+        }
+
+        return $value;
+    }
+}

vendor/zendframework/zend-config/src/Processor/Token.php

@@ -0,0 +1,298 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-config for the canonical source repository
+ * @copyright Copyright (c) 2005-2017 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-config/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Config\Processor;
+
+use Traversable;
+use Zend\Config\Config;
+use Zend\Config\Exception;
+
+class Token implements ProcessorInterface
+{
+    /**
+     * Token prefix.
+     *
+     * @var string
+     */
+    protected $prefix = '';
+
+    /**
+     * Whether or not to process keys as well as values.
+     *
+     * @var bool
+     */
+    protected $processKeys = false;
+
+    /**
+     * Token suffix.
+     *
+     * @var string
+     */
+    protected $suffix = '';
+
+    /**
+     * The registry of tokens
+     *
+     * @var array
+     */
+    protected $tokens = [];
+
+    /**
+     * Replacement map
+     *
+     * @var array
+     */
+    protected $map = null;
+
+    /**
+     * Token Processor walks through a Config structure and replaces all
+     * occurrences of tokens with supplied values.
+     *
+     * @param array|Config|Traversable $tokens Associative array of TOKEN =>
+     *     value to replace it with
+     * @param string $prefix
+     * @param string $suffix
+     * @param bool $enableKeyProcessing Whether or not to enable processing of
+     *     token values in configuration keys; defaults to false.
+     */
+    public function __construct($tokens = [], $prefix = '', $suffix = '', $enableKeyProcessing = false)
+    {
+        $this->setTokens($tokens);
+        $this->setPrefix((string) $prefix);
+        $this->setSuffix((string) $suffix);
+        if (true === $enableKeyProcessing) {
+            $this->enableKeyProcessing();
+        }
+    }
+
+    /**
+     * @param  string $prefix
+     * @return self
+     */
+    public function setPrefix($prefix)
+    {
+        // reset map
+        $this->map = null;
+        $this->prefix = $prefix;
+        return $this;
+    }
+
+    /**
+     * @return string
+     */
+    public function getPrefix()
+    {
+        return $this->prefix;
+    }
+
+    /**
+     * @param  string $suffix
+     * @return self
+     */
+    public function setSuffix($suffix)
+    {
+        // reset map
+        $this->map = null;
+        $this->suffix = $suffix;
+
+        return $this;
+    }
+
+    /**
+     * @return string
+     */
+    public function getSuffix()
+    {
+        return $this->suffix;
+    }
+
+    /**
+     * Set token registry.
+     *
+     * @param array|Config|Traversable $tokens Associative array of TOKEN =>
+     *     value to replace it with
+     * @return self
+     * @throws Exception\InvalidArgumentException
+     */
+    public function setTokens($tokens)
+    {
+        if (is_array($tokens)) {
+            $this->tokens = $tokens;
+        } elseif ($tokens instanceof Config) {
+            $this->tokens = $tokens->toArray();
+        } elseif ($tokens instanceof Traversable) {
+            $this->tokens = [];
+            foreach ($tokens as $key => $val) {
+                $this->tokens[$key] = $val;
+            }
+        } else {
+            throw new Exception\InvalidArgumentException('Cannot use ' . gettype($tokens) . ' as token registry.');
+        }
+
+        // reset map
+        $this->map = null;
+
+        return $this;
+    }
+
+    /**
+     * Get current token registry.
+     *
+     * @return array
+     */
+    public function getTokens()
+    {
+        return $this->tokens;
+    }
+
+    /**
+     * Add new token.
+     *
+     * @param string $token
+     * @param mixed $value
+     * @return self
+     * @throws Exception\InvalidArgumentException
+     */
+    public function addToken($token, $value)
+    {
+        if (! is_scalar($token)) {
+            throw new Exception\InvalidArgumentException('Cannot use ' . gettype($token) . ' as token name.');
+        }
+        $this->tokens[$token] = $value;
+
+        // reset map
+        $this->map = null;
+
+        return $this;
+    }
+
+    /**
+     * Add new token.
+     *
+     * @param string $token
+     * @param mixed $value
+     * @return self
+     */
+    public function setToken($token, $value)
+    {
+        return $this->addToken($token, $value);
+    }
+
+    /**
+     * Enable processing keys as well as values.
+     *
+     * @return void
+     */
+    public function enableKeyProcessing()
+    {
+        $this->processKeys = true;
+    }
+
+    /**
+     * Build replacement map
+     *
+     * @return array
+     */
+    protected function buildMap()
+    {
+        if (null === $this->map) {
+            if (! $this->suffix && ! $this->prefix) {
+                $this->map = $this->tokens;
+            } else {
+                $this->map = [];
+
+                foreach ($this->tokens as $token => $value) {
+                    $this->map[$this->prefix . $token . $this->suffix] = $value;
+                }
+            }
+
+            foreach (array_keys($this->map) as $key) {
+                if (empty($key)) {
+                    unset($this->map[$key]);
+                }
+            }
+        }
+
+        return $this->map;
+    }
+
+    /**
+     * Process
+     *
+     * @param  Config $config
+     * @return Config
+     * @throws Exception\InvalidArgumentException
+     */
+    public function process(Config $config)
+    {
+        return $this->doProcess($config, $this->buildMap());
+    }
+
+    /**
+     * Process a single value
+     *
+     * @param $value
+     * @return mixed
+     */
+    public function processValue($value)
+    {
+        return $this->doProcess($value, $this->buildMap());
+    }
+
+    /**
+     * Applies replacement map to the given value by modifying the value itself
+     *
+     * @param mixed $value
+     * @param array $replacements
+     *
+     * @return mixed
+     *
+     * @throws Exception\InvalidArgumentException if the provided value is a read-only {@see Config}
+     */
+    protected function doProcess($value, array $replacements)
+    {
+        if ($value instanceof Config) {
+            if ($value->isReadOnly()) {
+                throw new Exception\InvalidArgumentException('Cannot process config because it is read-only');
+            }
+
+            foreach ($value as $key => $val) {
+                $newKey = $this->processKeys ? $this->doProcess($key, $replacements) : $key;
+                $value->$newKey = $this->doProcess($val, $replacements);
+
+                // If the processed key differs from the original, remove the original
+                if ($newKey !== $key) {
+                    unset($value->$key);
+                }
+            }
+
+            return $value;
+        }
+
+        if ($value instanceof Traversable || is_array($value)) {
+            foreach ($value as & $val) {
+                $val = $this->doProcess($val, $replacements);
+            }
+
+            return $value;
+        }
+
+        if (! is_string($value) && (is_bool($value) || is_numeric($value))) {
+            $stringVal  = (string) $value;
+            $changedVal = strtr($stringVal, $this->map);
+
+            // replace the value only if a string replacement occurred
+            if ($changedVal !== $stringVal) {
+                return $changedVal;
+            }
+
+            return $value;
+        }
+
+        return strtr((string) $value, $this->map);
+    }
+}

vendor/zendframework/zend-config/src/Processor/Translator.php

@@ -0,0 +1,137 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-config for the canonical source repository
+ * @copyright Copyright (c) 2005-2017 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-config/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Config\Processor;
+
+use Zend\Config\Config;
+use Zend\Config\Exception;
+use Zend\I18n\Translator\Translator as ZendTranslator;
+
+class Translator implements ProcessorInterface
+{
+    /**
+     * @var ZendTranslator
+     */
+    protected $translator;
+
+    /**
+     * @var string|null
+     */
+    protected $locale = null;
+
+    /**
+     * @var string
+     */
+    protected $textDomain = 'default';
+
+    /**
+     * Translator uses the supplied Zend\I18n\Translator\Translator to find
+     * and translate language strings in config.
+     *
+     * @param ZendTranslator $translator
+     * @param string $textDomain
+     * @param string|null $locale
+     */
+    public function __construct(ZendTranslator $translator, $textDomain = 'default', $locale = null)
+    {
+        $this->setTranslator($translator);
+        $this->setTextDomain($textDomain);
+        $this->setLocale($locale);
+    }
+
+    /**
+     * @param ZendTranslator $translator
+     * @return self
+     */
+    public function setTranslator(ZendTranslator $translator)
+    {
+        $this->translator = $translator;
+        return $this;
+    }
+
+    /**
+     * @return ZendTranslator
+     */
+    public function getTranslator()
+    {
+        return $this->translator;
+    }
+
+    /**
+     * @param string|null $locale
+     * @return self
+     */
+    public function setLocale($locale)
+    {
+        $this->locale = $locale;
+        return $this;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getLocale()
+    {
+        return $this->locale;
+    }
+
+    /**
+     * @param string $textDomain
+     * @return self
+     */
+    public function setTextDomain($textDomain)
+    {
+        $this->textDomain = $textDomain;
+        return $this;
+    }
+
+    /**
+     * @return string
+     */
+    public function getTextDomain()
+    {
+        return $this->textDomain;
+    }
+
+    /**
+     * Process
+     *
+     * @param  Config $config
+     * @return Config
+     * @throws Exception\InvalidArgumentException
+     */
+    public function process(Config $config)
+    {
+        if ($config->isReadOnly()) {
+            throw new Exception\InvalidArgumentException('Cannot process config because it is read-only');
+        }
+
+        /**
+         * Walk through config and replace values
+         */
+        foreach ($config as $key => $val) {
+            if ($val instanceof Config) {
+                $this->process($val);
+            } else {
+                $config->{$key} = $this->translator->translate($val, $this->textDomain, $this->locale);
+            }
+        }
+
+        return $config;
+    }
+
+    /**
+     * Process a single value
+     *
+     * @param $value
+     * @return string
+     */
+    public function processValue($value)
+    {
+        return $this->translator->translate($value, $this->textDomain, $this->locale);
+    }
+}

vendor/zendframework/zend-config/src/Reader/Ini.php

@@ -0,0 +1,261 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-config for the canonical source repository
+ * @copyright Copyright (c) 2005-2019 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-config/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Config\Reader;
+
+use Zend\Config\Exception;
+
+/**
+ * INI config reader.
+ */
+class Ini implements ReaderInterface
+{
+    /**
+     * Separator for nesting levels of configuration data identifiers.
+     *
+     * @var string
+     */
+    protected $nestSeparator = '.';
+
+    /**
+     * Directory of the file to process.
+     *
+     * @var string
+     */
+    protected $directory;
+
+    /**
+     * Flag which determines whether sections are processed or not.
+     *
+     * @see https://www.php.net/parse_ini_file
+     * @var bool
+     */
+    protected $processSections = true;
+
+    /**
+     * Set nest separator.
+     *
+     * @param  string $separator
+     * @return self
+     */
+    public function setNestSeparator($separator)
+    {
+        $this->nestSeparator = $separator;
+        return $this;
+    }
+
+    /**
+     * Get nest separator.
+     *
+     * @return string
+     */
+    public function getNestSeparator()
+    {
+        return $this->nestSeparator;
+    }
+
+    /**
+     * Marks whether sections should be processed.
+     * When sections are not processed,section names are stripped and section
+     * values are merged
+     *
+     * @see https://www.php.net/parse_ini_file
+     * @param bool $processSections
+     * @return $this
+     */
+    public function setProcessSections($processSections)
+    {
+        $this->processSections = (bool) $processSections;
+        return $this;
+    }
+
+    /**
+     * Get if sections should be processed
+     * When sections are not processed,section names are stripped and section
+     * values are merged
+     *
+     * @see https://www.php.net/parse_ini_file
+     * @return bool
+     */
+    public function getProcessSections()
+    {
+        return $this->processSections;
+    }
+
+    /**
+     * fromFile(): defined by Reader interface.
+     *
+     * @see    ReaderInterface::fromFile()
+     * @param  string $filename
+     * @return array
+     * @throws Exception\RuntimeException
+     */
+    public function fromFile($filename)
+    {
+        if (! is_file($filename) || ! is_readable($filename)) {
+            throw new Exception\RuntimeException(sprintf(
+                "File '%s' doesn't exist or not readable",
+                $filename
+            ));
+        }
+
+        $this->directory = dirname($filename);
+
+        set_error_handler(
+            function ($error, $message = '') use ($filename) {
+                throw new Exception\RuntimeException(
+                    sprintf('Error reading INI file "%s": %s', $filename, $message),
+                    $error
+                );
+            },
+            E_WARNING
+        );
+        $ini = parse_ini_file($filename, $this->getProcessSections());
+        restore_error_handler();
+
+        return $this->process($ini);
+    }
+
+    /**
+     * fromString(): defined by Reader interface.
+     *
+     * @param  string $string
+     * @return array|bool
+     * @throws Exception\RuntimeException
+     */
+    public function fromString($string)
+    {
+        if (empty($string)) {
+            return [];
+        }
+        $this->directory = null;
+
+        set_error_handler(
+            function ($error, $message = '') {
+                throw new Exception\RuntimeException(
+                    sprintf('Error reading INI string: %s', $message),
+                    $error
+                );
+            },
+            E_WARNING
+        );
+        $ini = parse_ini_string($string, $this->getProcessSections());
+        restore_error_handler();
+
+        return $this->process($ini);
+    }
+
+    /**
+     * Process data from the parsed ini file.
+     *
+     * @param  array $data
+     * @return array
+     */
+    protected function process(array $data)
+    {
+        $config = [];
+
+        foreach ($data as $section => $value) {
+            if (is_array($value)) {
+                if (strpos($section, $this->nestSeparator) !== false) {
+                    $sections = explode($this->nestSeparator, $section);
+                    $config = array_merge_recursive($config, $this->buildNestedSection($sections, $value));
+                } else {
+                    $config[$section] = $this->processSection($value);
+                }
+            } else {
+                $this->processKey($section, $value, $config);
+            }
+        }
+
+        return $config;
+    }
+
+    /**
+     * Process a nested section
+     *
+     * @param array $sections
+     * @param mixed $value
+     * @return array
+     */
+    private function buildNestedSection($sections, $value)
+    {
+        if (! $sections) {
+            return $this->processSection($value);
+        }
+
+        $nestedSection = [];
+
+        $first = array_shift($sections);
+        $nestedSection[$first] = $this->buildNestedSection($sections, $value);
+
+        return $nestedSection;
+    }
+
+    /**
+     * Process a section.
+     *
+     * @param  array $section
+     * @return array
+     */
+    protected function processSection(array $section)
+    {
+        $config = [];
+
+        foreach ($section as $key => $value) {
+            $this->processKey($key, $value, $config);
+        }
+
+        return $config;
+    }
+
+    /**
+     * Process a key.
+     *
+     * @param  string $key
+     * @param  string $value
+     * @param  array  $config
+     * @return array
+     * @throws Exception\RuntimeException
+     */
+    protected function processKey($key, $value, array &$config)
+    {
+        if (strpos($key, $this->nestSeparator) !== false) {
+            $pieces = explode($this->nestSeparator, $key, 2);
+
+            if ($pieces[0] === '' || $pieces[1] === '') {
+                throw new Exception\RuntimeException(sprintf('Invalid key "%s"', $key));
+            }
+
+            if (! isset($config[$pieces[0]])) {
+                if ($pieces[0] === '0' && ! empty($config)) {
+                    $config = [$pieces[0] => $config];
+                } else {
+                    $config[$pieces[0]] = [];
+                }
+            } elseif (! is_array($config[$pieces[0]])) {
+                throw new Exception\RuntimeException(
+                    sprintf('Cannot create sub-key for "%s", as key already exists', $pieces[0])
+                );
+            }
+
+            $this->processKey($pieces[1], $value, $config[$pieces[0]]);
+        } else {
+            if ($key === '@include') {
+                if ($this->directory === null) {
+                    throw new Exception\RuntimeException('Cannot process @include statement for a string config');
+                }
+
+                $reader  = clone $this;
+                $include = $reader->fromFile($this->directory . '/' . $value);
+                $config  = array_replace_recursive($config, $include);
+            } else {
+                $config[$key] = $value;
+            }
+        }
+    }
+}

vendor/zendframework/zend-config/src/Reader/JavaProperties.php

@@ -0,0 +1,179 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-config for the canonical source repository
+ * @copyright Copyright (c) 2005-2018 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-config/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Config\Reader;
+
+use Zend\Config\Exception;
+
+/**
+ * Java-style properties config reader.
+ */
+class JavaProperties implements ReaderInterface
+{
+    const DELIMITER_DEFAULT = ':';
+    const WHITESPACE_TRIM = true;
+    const WHITESPACE_KEEP = false;
+
+    /**
+     * Directory of the Java-style properties file
+     *
+     * @var string
+     */
+    protected $directory;
+
+    /**
+     * Delimiter for key/value pairs.
+     */
+    private $delimiter;
+
+    /*
+     * Whether or not to trim whitespace from discovered keys and values.
+     *
+     * @var bool
+     */
+    private $trimWhitespace;
+
+    /**
+     * @param string $delimiter Delimiter to use for key/value pairs; defaults
+     *     to self::DELIMITER_DEFAULT (':')
+     * @param bool $trimWhitespace
+     * @throws Exception\InvalidArgumentException for invalid $delimiter values.
+     */
+    public function __construct($delimiter = self::DELIMITER_DEFAULT, $trimWhitespace = self::WHITESPACE_KEEP)
+    {
+        if (! is_string($delimiter) || '' === $delimiter) {
+            throw new Exception\InvalidArgumentException(sprintf(
+                'Invalid delimiter of type "%s"; must be a non-empty string',
+                is_object($delimiter) ? get_class($delimiter) : gettype($delimiter)
+            ));
+        }
+
+        $this->delimiter = $delimiter;
+        $this->trimWhitespace = (bool) $trimWhitespace;
+    }
+
+    /**
+     * fromFile(): defined by Reader interface.
+     *
+     * @see    ReaderInterface::fromFile()
+     * @param  string $filename
+     * @return array
+     * @throws Exception\RuntimeException if the file cannot be read
+     */
+    public function fromFile($filename)
+    {
+        if (! is_file($filename) || ! is_readable($filename)) {
+            throw new Exception\RuntimeException(sprintf(
+                "File '%s' doesn't exist or not readable",
+                $filename
+            ));
+        }
+
+        $this->directory = dirname($filename);
+
+        $config = $this->parse(file_get_contents($filename));
+
+        return $this->process($config);
+    }
+
+    /**
+     * fromString(): defined by Reader interface.
+     *
+     * @see    ReaderInterface::fromString()
+     * @param  string $string
+     * @return array
+     * @throws Exception\RuntimeException if an @include key is found
+     */
+    public function fromString($string)
+    {
+        if (empty($string)) {
+            return [];
+        }
+
+        $this->directory = null;
+
+        $config = $this->parse($string);
+
+        return $this->process($config);
+    }
+
+    /**
+     * Process the array for @include
+     *
+     * @param  array $data
+     * @return array
+     * @throws Exception\RuntimeException if an @include key is found
+     */
+    protected function process(array $data)
+    {
+        foreach ($data as $key => $value) {
+            if (trim($key) === '@include') {
+                if ($this->directory === null) {
+                    throw new Exception\RuntimeException('Cannot process @include statement for a string');
+                }
+                $reader = clone $this;
+                unset($data[$key]);
+                $data = array_replace_recursive($data, $reader->fromFile($this->directory . '/' . $value));
+            }
+        }
+        return $data;
+    }
+
+    /**
+     * Parse Java-style properties string
+     *
+     * @todo Support use of the equals sign "key=value" as key-value delimiter
+     * @todo Ignore whitespace that precedes text past the first line of multiline values
+     *
+     * @param  string $string
+     * @return array
+     */
+    protected function parse($string)
+    {
+        $delimiter = $this->delimiter;
+        $delimLength = strlen($delimiter);
+        $result = [];
+        $lines = explode("\n", $string);
+        $key = '';
+        $isWaitingOtherLine = false;
+        foreach ($lines as $i => $line) {
+            // Ignore empty lines and commented lines
+            if (empty($line)
+               || (! $isWaitingOtherLine && strpos($line, "#") === 0)
+               || (! $isWaitingOtherLine && strpos($line, "!") === 0)
+            ) {
+                continue;
+            }
+
+            // Add a new key-value pair or append value to a previous pair
+            if (! $isWaitingOtherLine) {
+                $key = substr($line, 0, strpos($line, $delimiter));
+                $value = substr($line, strpos($line, $delimiter) + $delimLength, strlen($line));
+            } else {
+                $value .= $line;
+            }
+
+            // Check if ends with single '\' (indicating another line is expected)
+            if (strrpos($value, "\\") === strlen($value) - strlen("\\")) {
+                $value = substr($value, 0, -1);
+                $isWaitingOtherLine = true;
+            } else {
+                $isWaitingOtherLine = false;
+            }
+
+            $key = $this->trimWhitespace ? trim($key) : $key;
+            $value = $this->trimWhitespace && ! $isWaitingOtherLine
+                ? trim($value)
+                : $value;
+
+            $result[$key] = stripslashes($value);
+            unset($lines[$i]);
+        }
+
+        return $result;
+    }
+}

vendor/zendframework/zend-config/src/Reader/Json.php

@@ -0,0 +1,125 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-config for the canonical source repository
+ * @copyright Copyright (c) 2005-2017 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-config/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Config\Reader;
+
+use Zend\Config\Exception;
+
+/**
+ * JSON config reader.
+ */
+class Json implements ReaderInterface
+{
+    /**
+     * Directory of the JSON file
+     *
+     * @var string
+     */
+    protected $directory;
+
+    /**
+     * fromFile(): defined by Reader interface.
+     *
+     * @see    ReaderInterface::fromFile()
+     * @param  string $filename
+     * @return array
+     * @throws Exception\RuntimeException
+     */
+    public function fromFile($filename)
+    {
+        if (! is_file($filename) || ! is_readable($filename)) {
+            throw new Exception\RuntimeException(sprintf(
+                "File '%s' doesn't exist or not readable",
+                $filename
+            ));
+        }
+
+        $this->directory = dirname($filename);
+
+        $config = $this->decode(file_get_contents($filename));
+
+        return $this->process($config);
+    }
+
+    /**
+     * fromString(): defined by Reader interface.
+     *
+     * @see    ReaderInterface::fromString()
+     * @param  string $string
+     * @return array|bool
+     * @throws Exception\RuntimeException
+     */
+    public function fromString($string)
+    {
+        if (empty($string)) {
+            return [];
+        }
+
+        $this->directory = null;
+
+        $config = $this->decode($string);
+
+        return $this->process($config);
+    }
+
+    /**
+     * Process the array for @include
+     *
+     * @param  array $data
+     * @return array
+     * @throws Exception\RuntimeException
+     */
+    protected function process(array $data)
+    {
+        foreach ($data as $key => $value) {
+            if (is_array($value)) {
+                $data[$key] = $this->process($value);
+            }
+            if (trim($key) === '@include') {
+                if ($this->directory === null) {
+                    throw new Exception\RuntimeException('Cannot process @include statement for a JSON string');
+                }
+                $reader = clone $this;
+                unset($data[$key]);
+                $data = array_replace_recursive($data, $reader->fromFile($this->directory . '/' . $value));
+            }
+        }
+        return $data;
+    }
+
+    /**
+     * Decode JSON configuration.
+     *
+     * Determines if ext/json is present, and, if so, uses that to decode the
+     * configuration. Otherwise, it uses zend-json, and, if that is missing,
+     * raises an exception indicating inability to decode.
+     *
+     * @param string $data
+     * @return array
+     * @throws Exception\RuntimeException for any decoding errors.
+     */
+    private function decode($data)
+    {
+        $config = json_decode($data, true);
+
+        if (null !== $config && ! is_array($config)) {
+            throw new Exception\RuntimeException(
+                'Invalid JSON configuration; did not return an array or object'
+            );
+        }
+
+        if (null !== $config) {
+            return $config;
+        }
+
+        if (JSON_ERROR_NONE === json_last_error()) {
+            return $config;
+        }
+
+        throw new Exception\RuntimeException(json_last_error_msg());
+    }
+}

vendor/zendframework/zend-config/src/Reader/ReaderInterface.php

@@ -0,0 +1,27 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-config for the canonical source repository
+ * @copyright Copyright (c) 2005-2017 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-config/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Config\Reader;
+
+interface ReaderInterface
+{
+    /**
+     * Read from a file and create an array
+     *
+     * @param  string $filename
+     * @return array
+     */
+    public function fromFile($filename);
+
+    /**
+     * Read from a string and create an array
+     *
+     * @param  string $string
+     * @return array|bool
+     */
+    public function fromString($string);
+}

vendor/zendframework/zend-config/src/Reader/Xml.php

@@ -0,0 +1,201 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-config for the canonical source repository
+ * @copyright Copyright (c) 2005-2017 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-config/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Config\Reader;
+
+use XMLReader;
+use Zend\Config\Exception;
+
+/**
+ * XML config reader.
+ */
+class Xml implements ReaderInterface
+{
+    /**
+     * XML Reader instance.
+     *
+     * @var XMLReader
+     */
+    protected $reader;
+
+    /**
+     * Directory of the file to process.
+     *
+     * @var string
+     */
+    protected $directory;
+
+    /**
+     * Nodes to handle as plain text.
+     *
+     * @var array
+     */
+    protected $textNodes = [
+        XMLReader::TEXT,
+        XMLReader::CDATA,
+        XMLReader::WHITESPACE,
+        XMLReader::SIGNIFICANT_WHITESPACE
+    ];
+
+    /**
+     * fromFile(): defined by Reader interface.
+     *
+     * @see    ReaderInterface::fromFile()
+     * @param  string $filename
+     * @return array
+     * @throws Exception\RuntimeException
+     */
+    public function fromFile($filename)
+    {
+        if (! is_file($filename) || ! is_readable($filename)) {
+            throw new Exception\RuntimeException(sprintf(
+                "File '%s' doesn't exist or not readable",
+                $filename
+            ));
+        }
+        $this->reader = new XMLReader();
+        $this->reader->open($filename, null, LIBXML_XINCLUDE);
+
+        $this->directory = dirname($filename);
+
+        set_error_handler(
+            function ($error, $message = '') use ($filename) {
+                throw new Exception\RuntimeException(
+                    sprintf('Error reading XML file "%s": %s', $filename, $message),
+                    $error
+                );
+            },
+            E_WARNING
+        );
+        $return = $this->process();
+        restore_error_handler();
+        $this->reader->close();
+
+        return $return;
+    }
+
+    /**
+     * fromString(): defined by Reader interface.
+     *
+     * @see    ReaderInterface::fromString()
+     * @param  string $string
+     * @return array|bool
+     * @throws Exception\RuntimeException
+     */
+    public function fromString($string)
+    {
+        if (empty($string)) {
+            return [];
+        }
+        $this->reader = new XMLReader();
+
+        $this->reader->XML($string, null, LIBXML_XINCLUDE);
+
+        $this->directory = null;
+
+        set_error_handler(
+            function ($error, $message = '') {
+                throw new Exception\RuntimeException(
+                    sprintf('Error reading XML string: %s', $message),
+                    $error
+                );
+            },
+            E_WARNING
+        );
+        $return = $this->process();
+        restore_error_handler();
+        $this->reader->close();
+
+        return $return;
+    }
+
+    /**
+     * Process data from the created XMLReader.
+     *
+     * @return array
+     */
+    protected function process()
+    {
+        return $this->processNextElement();
+    }
+
+    /**
+     * Process the next inner element.
+     *
+     * @return mixed
+     */
+    protected function processNextElement()
+    {
+        $children = [];
+        $text     = '';
+
+        while ($this->reader->read()) {
+            if ($this->reader->nodeType === XMLReader::ELEMENT) {
+                if ($this->reader->depth === 0) {
+                    return $this->processNextElement();
+                }
+
+                $attributes = $this->getAttributes();
+                $name       = $this->reader->name;
+
+                if ($this->reader->isEmptyElement) {
+                    $child = [];
+                } else {
+                    $child = $this->processNextElement();
+                }
+
+                if ($attributes) {
+                    if (is_string($child)) {
+                        $child = ['_' => $child];
+                    }
+
+                    if (! is_array($child)) {
+                        $child = [];
+                    }
+
+                    $child = array_merge($child, $attributes);
+                }
+
+                if (isset($children[$name])) {
+                    if (! is_array($children[$name]) || ! array_key_exists(0, $children[$name])) {
+                        $children[$name] = [$children[$name]];
+                    }
+
+                    $children[$name][] = $child;
+                } else {
+                    $children[$name] = $child;
+                }
+            } elseif ($this->reader->nodeType === XMLReader::END_ELEMENT) {
+                break;
+            } elseif (in_array($this->reader->nodeType, $this->textNodes)) {
+                $text .= $this->reader->value;
+            }
+        }
+
+        return $children ?: $text;
+    }
+
+    /**
+     * Get all attributes on the current node.
+     *
+     * @return array
+     */
+    protected function getAttributes()
+    {
+        $attributes = [];
+
+        if ($this->reader->hasAttributes) {
+            while ($this->reader->moveToNextAttribute()) {
+                $attributes[$this->reader->localName] = $this->reader->value;
+            }
+
+            $this->reader->moveToElement();
+        }
+
+        return $attributes;
+    }
+}

vendor/zendframework/zend-config/src/Reader/Yaml.php

@@ -0,0 +1,157 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-config for the canonical source repository
+ * @copyright Copyright (c) 2005-2017 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-config/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Config\Reader;
+
+use Zend\Config\Exception;
+
+/**
+ * YAML config reader.
+ */
+class Yaml implements ReaderInterface
+{
+    /**
+     * Directory of the YAML file
+     *
+     * @var string
+     */
+    protected $directory;
+
+    /**
+     * YAML decoder callback
+     *
+     * @var callable
+     */
+    protected $yamlDecoder;
+
+    /**
+     * Constructor
+     *
+     * @param callable $yamlDecoder
+     */
+    public function __construct($yamlDecoder = null)
+    {
+        if ($yamlDecoder !== null) {
+            $this->setYamlDecoder($yamlDecoder);
+        } else {
+            if (function_exists('yaml_parse')) {
+                $this->setYamlDecoder('yaml_parse');
+            }
+        }
+    }
+
+    /**
+     * Set callback for decoding YAML
+     *
+     * @param string|callable $yamlDecoder the decoder to set
+     * @return self
+     * @throws Exception\RuntimeException
+     */
+    public function setYamlDecoder($yamlDecoder)
+    {
+        if (! is_callable($yamlDecoder)) {
+            throw new Exception\RuntimeException(
+                'Invalid parameter to setYamlDecoder() - must be callable'
+            );
+        }
+        $this->yamlDecoder = $yamlDecoder;
+        return $this;
+    }
+
+    /**
+     * Get callback for decoding YAML
+     *
+     * @return callable
+     */
+    public function getYamlDecoder()
+    {
+        return $this->yamlDecoder;
+    }
+
+    /**
+     * fromFile(): defined by Reader interface.
+     *
+     * @see    ReaderInterface::fromFile()
+     * @param  string $filename
+     * @return array
+     * @throws Exception\RuntimeException
+     */
+    public function fromFile($filename)
+    {
+        if (! is_file($filename) || ! is_readable($filename)) {
+            throw new Exception\RuntimeException(sprintf(
+                "File '%s' doesn't exist or not readable",
+                $filename
+            ));
+        }
+
+        if (null === $this->getYamlDecoder()) {
+            throw new Exception\RuntimeException("You didn't specify a Yaml callback decoder");
+        }
+
+        $this->directory = dirname($filename);
+
+        $config = call_user_func($this->getYamlDecoder(), file_get_contents($filename));
+        if (null === $config) {
+            throw new Exception\RuntimeException("Error parsing YAML data");
+        }
+
+        return $this->process($config);
+    }
+
+    /**
+     * fromString(): defined by Reader interface.
+     *
+     * @see    ReaderInterface::fromString()
+     * @param  string $string
+     * @return array|bool
+     * @throws Exception\RuntimeException
+     */
+    public function fromString($string)
+    {
+        if (null === $this->getYamlDecoder()) {
+            throw new Exception\RuntimeException("You didn't specify a Yaml callback decoder");
+        }
+        if (empty($string)) {
+            return [];
+        }
+
+        $this->directory = null;
+
+        $config = call_user_func($this->getYamlDecoder(), $string);
+        if (null === $config) {
+            throw new Exception\RuntimeException("Error parsing YAML data");
+        }
+
+        return $this->process($config);
+    }
+
+    /**
+     * Process the array for @include
+     *
+     * @param  array $data
+     * @return array
+     * @throws Exception\RuntimeException
+     */
+    protected function process(array $data)
+    {
+        foreach ($data as $key => $value) {
+            if (is_array($value)) {
+                $data[$key] = $this->process($value);
+            }
+            if (trim($key) === '@include') {
+                if ($this->directory === null) {
+                    throw new Exception\RuntimeException('Cannot process @include statement for a json string');
+                }
+                $reader = clone $this;
+                unset($data[$key]);
+                $data = array_replace_recursive($data, $reader->fromFile($this->directory . '/' . $value));
+            }
+        }
+        return $data;
+    }
+}

vendor/zendframework/zend-config/src/ReaderPluginManager.php

@@ -0,0 +1,91 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-config for the canonical source repository
+ * @copyright Copyright (c) 2005-2017 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-config/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Config;
+
+use Interop\Container\ContainerInterface;
+use Zend\ServiceManager\AbstractPluginManager;
+use Zend\ServiceManager\Exception\InvalidServiceException;
+use Zend\ServiceManager\Factory\InvokableFactory;
+
+class ReaderPluginManager extends AbstractPluginManager
+{
+    protected $instanceOf = Reader\ReaderInterface::class;
+
+    protected $aliases = [
+        'ini'            => Reader\Ini::class,
+        'Ini'            => Reader\Ini::class,
+        'json'           => Reader\Json::class,
+        'Json'           => Reader\Json::class,
+        'xml'            => Reader\Xml::class,
+        'Xml'            => Reader\Xml::class,
+        'yaml'           => Reader\Yaml::class,
+        'Yaml'           => Reader\Yaml::class,
+        'javaproperties' => Reader\JavaProperties::class,
+        'javaProperties' => Reader\JavaProperties::class,
+        'JavaProperties' => Reader\JavaProperties::class,
+    ];
+
+    protected $factories = [
+        Reader\Ini::class            => InvokableFactory::class,
+        Reader\Json::class           => InvokableFactory::class,
+        Reader\Xml::class            => InvokableFactory::class,
+        Reader\Yaml::class           => InvokableFactory::class,
+        Reader\JavaProperties::class => InvokableFactory::class,
+        // Legacy (v2) due to alias resolution; canonical form of resolved
+        // alias is used to look up the factory, while the non-normalized
+        // resolved alias is used as the requested name passed to the factory.
+        'zendconfigreaderini'            => InvokableFactory::class,
+        'zendconfigreaderjson'           => InvokableFactory::class,
+        'zendconfigreaderxml'            => InvokableFactory::class,
+        'zendconfigreaderyaml'           => InvokableFactory::class,
+        'zendconfigreaderjavaproperties' => InvokableFactory::class,
+    ];
+
+    /**
+     * Validate the plugin is of the expected type (v3).
+     *
+     * Validates against `$instanceOf`.
+     *
+     * @param mixed $instance
+     * @throws InvalidServiceException
+     */
+    public function validate($instance)
+    {
+        if (! $instance instanceof $this->instanceOf) {
+            throw new InvalidServiceException(sprintf(
+                '%s can only create instances of %s; %s is invalid',
+                get_class($this),
+                $this->instanceOf,
+                (is_object($instance) ? get_class($instance) : gettype($instance))
+            ));
+        }
+    }
+
+    /**
+     * Validate the plugin is of the expected type (v2).
+     *
+     * Proxies to `validate()`.
+     *
+     * @param mixed $instance
+     * @throws Exception\InvalidArgumentException
+     */
+    public function validatePlugin($instance)
+    {
+        try {
+            $this->validate($instance);
+        } catch (InvalidServiceException $e) {
+            throw new Exception\InvalidArgumentException($e->getMessage(), $e->getCode(), $e);
+        }
+    }
+
+    public function __construct(ContainerInterface $container, array $config = [])
+    {
+        $config = array_merge_recursive(['aliases' => $this->aliases], $config);
+        parent::__construct($container, $config);
+    }
+}

vendor/zendframework/zend-config/src/StandaloneReaderPluginManager.php

@@ -0,0 +1,55 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-config for the canonical source repository
+ * @copyright Copyright (c) 2017 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-config/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Config;
+
+use Psr\Container\ContainerInterface;
+
+class StandaloneReaderPluginManager implements ContainerInterface
+{
+    private $knownPlugins = [
+        'ini'            => Reader\Ini::class,
+        'json'           => Reader\Json::class,
+        'xml'            => Reader\Xml::class,
+        'yaml'           => Reader\Yaml::class,
+        'javaproperties' => Reader\JavaProperties::class,
+    ];
+
+    /**
+     * @param string $plugin
+     * @return bool
+     */
+    public function has($plugin)
+    {
+        if (in_array($plugin, array_values($this->knownPlugins), true)) {
+            return true;
+        }
+
+        return in_array(strtolower($plugin), array_keys($this->knownPlugins), true);
+    }
+
+    /**
+     * @param string $plugin
+     * @return Reader\ReaderInterface
+     * @throws Exception\PluginNotFoundException
+     */
+    public function get($plugin)
+    {
+        if (! $this->has($plugin)) {
+            throw new Exception\PluginNotFoundException(sprintf(
+                'Config reader plugin by name %s not found',
+                $plugin
+            ));
+        }
+
+        if (! class_exists($plugin)) {
+            $plugin = $this->knownPlugins[strtolower($plugin)];
+        }
+
+        return new $plugin();
+    }
+}

vendor/zendframework/zend-config/src/StandaloneWriterPluginManager.php

@@ -0,0 +1,57 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-config for the canonical source repository
+ * @copyright Copyright (c) 2017 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-config/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Config;
+
+use Psr\Container\ContainerInterface;
+
+class StandaloneWriterPluginManager implements ContainerInterface
+{
+    private $knownPlugins = [
+        'ini'            => Writer\Ini::class,
+        'javaproperties' => Writer\JavaProperties::class,
+        'json'           => Writer\Json::class,
+        'php'            => Writer\PhpArray::class,
+        'phparray'       => Writer\PhpArray::class,
+        'xml'            => Writer\Xml::class,
+        'yaml'           => Writer\Yaml::class,
+    ];
+
+    /**
+     * @param string $plugin
+     * @return bool
+     */
+    public function has($plugin)
+    {
+        if (in_array($plugin, array_values($this->knownPlugins), true)) {
+            return true;
+        }
+
+        return in_array(strtolower($plugin), array_keys($this->knownPlugins), true);
+    }
+
+    /**
+     * @param string $plugin
+     * @return Reader\ReaderInterface
+     * @throws Exception\PluginNotFoundException
+     */
+    public function get($plugin)
+    {
+        if (! $this->has($plugin)) {
+            throw new Exception\PluginNotFoundException(sprintf(
+                'Config writer plugin by name %s not found',
+                $plugin
+            ));
+        }
+
+        if (! class_exists($plugin)) {
+            $plugin = $this->knownPlugins[strtolower($plugin)];
+        }
+
+        return new $plugin();
+    }
+}

vendor/zendframework/zend-config/src/Writer/AbstractWriter.php

@@ -0,0 +1,82 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-config for the canonical source repository
+ * @copyright Copyright (c) 2005-2017 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-config/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Config\Writer;
+
+use Traversable;
+use Zend\Config\Exception;
+use Zend\Stdlib\ArrayUtils;
+
+abstract class AbstractWriter implements WriterInterface
+{
+    /**
+     * toFile(): defined by Writer interface.
+     *
+     * @see    WriterInterface::toFile()
+     * @param  string  $filename
+     * @param  mixed   $config
+     * @param  bool $exclusiveLock
+     * @return void
+     * @throws Exception\InvalidArgumentException
+     * @throws Exception\RuntimeException
+     */
+    public function toFile($filename, $config, $exclusiveLock = true)
+    {
+        if (empty($filename)) {
+            throw new Exception\InvalidArgumentException('No file name specified');
+        }
+
+        $flags = 0;
+        if ($exclusiveLock) {
+            $flags |= LOCK_EX;
+        }
+
+        set_error_handler(
+            function ($error, $message = '') use ($filename) {
+                throw new Exception\RuntimeException(
+                    sprintf('Error writing to "%s": %s', $filename, $message),
+                    $error
+                );
+            },
+            E_WARNING
+        );
+
+        try {
+            file_put_contents($filename, $this->toString($config), $flags);
+        } catch (\Exception $e) {
+            restore_error_handler();
+            throw $e;
+        }
+
+        restore_error_handler();
+    }
+
+    /**
+     * toString(): defined by Writer interface.
+     *
+     * @see    WriterInterface::toString()
+     * @param  mixed   $config
+     * @return string
+     * @throws Exception\InvalidArgumentException
+     */
+    public function toString($config)
+    {
+        if ($config instanceof Traversable) {
+            $config = ArrayUtils::iteratorToArray($config);
+        } elseif (! is_array($config)) {
+            throw new Exception\InvalidArgumentException(__METHOD__ . ' expects an array or Traversable config');
+        }
+
+        return $this->processConfig($config);
+    }
+
+    /**
+     * @param array $config
+     * @return string
+     */
+    abstract protected function processConfig(array $config);
+}

vendor/zendframework/zend-config/src/Writer/Ini.php

@@ -0,0 +1,185 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-config for the canonical source repository
+ * @copyright Copyright (c) 2005-2017 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-config/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Config\Writer;
+
+use Zend\Config\Exception;
+
+class Ini extends AbstractWriter
+{
+    /**
+     * Separator for nesting levels of configuration data identifiers.
+     *
+     * @var string
+     */
+    protected $nestSeparator = '.';
+
+    /**
+     * If true the INI string is rendered in the global namespace without
+     * sections.
+     *
+     * @var bool
+     */
+    protected $renderWithoutSections = false;
+
+    /**
+     * Set nest separator.
+     *
+     * @param  string $separator
+     * @return self
+     */
+    public function setNestSeparator($separator)
+    {
+        $this->nestSeparator = $separator;
+        return $this;
+    }
+
+    /**
+     * Get nest separator.
+     *
+     * @return string
+     */
+    public function getNestSeparator()
+    {
+        return $this->nestSeparator;
+    }
+
+    /**
+     * Set if rendering should occur without sections or not.
+     *
+     * If set to true, the INI file is rendered without sections completely
+     * into the global namespace of the INI file.
+     *
+     * @param bool $withoutSections
+     * @return self
+     */
+    public function setRenderWithoutSectionsFlags($withoutSections)
+    {
+        $this->renderWithoutSections = (bool) $withoutSections;
+        return $this;
+    }
+
+    /**
+     * Return whether the writer should render without sections.
+     *
+     * @return bool
+     */
+    public function shouldRenderWithoutSections()
+    {
+        return $this->renderWithoutSections;
+    }
+
+    /**
+     * processConfig(): defined by AbstractWriter.
+     *
+     * @param  array $config
+     * @return string
+     */
+    public function processConfig(array $config)
+    {
+        $iniString = '';
+
+        if ($this->shouldRenderWithoutSections()) {
+            $iniString .= $this->addBranch($config);
+        } else {
+            $config = $this->sortRootElements($config);
+
+            foreach ($config as $sectionName => $data) {
+                if (! is_array($data)) {
+                    $iniString .= $sectionName
+                               .  ' = '
+                               .  $this->prepareValue($data)
+                               .  "\n";
+                } else {
+                    $iniString .= '[' . $sectionName . ']' . "\n"
+                               .  $this->addBranch($data)
+                               .  "\n";
+                }
+            }
+        }
+
+        return $iniString;
+    }
+
+    /**
+     * Add a branch to an INI string recursively.
+     *
+     * @param  array $config
+     * @param  array $parents
+     * @return string
+     */
+    protected function addBranch(array $config, $parents = [])
+    {
+        $iniString = '';
+
+        foreach ($config as $key => $value) {
+            $group = array_merge($parents, [$key]);
+
+            if (is_array($value)) {
+                $iniString .= $this->addBranch($value, $group);
+            } else {
+                $iniString .= implode($this->nestSeparator, $group)
+                           .  ' = '
+                           .  $this->prepareValue($value)
+                           .  "\n";
+            }
+        }
+
+        return $iniString;
+    }
+
+    /**
+     * Prepare a value for INI.
+     *
+     * @param  mixed $value
+     * @return string
+     * @throws Exception\RuntimeException
+     */
+    protected function prepareValue($value)
+    {
+        if (is_int($value) || is_float($value)) {
+            return $value;
+        }
+
+        if (is_bool($value)) {
+            return ($value ? 'true' : 'false');
+        }
+
+        if (false === strpos($value, '"')) {
+            return '"' . $value .  '"';
+        }
+
+        throw new Exception\RuntimeException('Value can not contain double quotes');
+    }
+
+    /**
+     * Root elements that are not assigned to any section needs to be on the
+     * top of config.
+     *
+     * @param  array $config
+     * @return array
+     */
+    protected function sortRootElements(array $config)
+    {
+        $sections = [];
+
+        // Remove sections from config array.
+        foreach ($config as $key => $value) {
+            if (is_array($value)) {
+                $sections[$key] = $value;
+                unset($config[$key]);
+            }
+        }
+
+        // Read sections to the end.
+        foreach ($sections as $key => $value) {
+            $config[$key] = $value;
+        }
+
+        return $config;
+    }
+}

vendor/zendframework/zend-config/src/Writer/JavaProperties.php

@@ -0,0 +1,72 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-config for the canonical source repository
+ * @copyright Copyright (c) 2018 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-config/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Config\Writer;
+
+use Zend\Config\Exception;
+
+class JavaProperties extends AbstractWriter
+{
+    const DELIMITER_DEFAULT = ':';
+
+    /**
+     * Delimiter for key/value pairs.
+     */
+    private $delimiter;
+
+    /**
+     * @param string $delimiter Delimiter to use for key/value pairs; defaults
+     *     to self::DELIMITER_DEFAULT (':')
+     * @throws Exception\InvalidArgumentException for invalid $delimiter values.
+     */
+    public function __construct($delimiter = self::DELIMITER_DEFAULT)
+    {
+        if (! is_string($delimiter) || '' === $delimiter) {
+            throw new Exception\InvalidArgumentException(sprintf(
+                'Invalid delimiter of type "%s"; must be a non-empty string',
+                is_object($delimiter) ? get_class($delimiter) : gettype($delimiter)
+            ));
+        }
+
+        $this->delimiter = $delimiter;
+    }
+
+    /**
+     * processConfig(): defined by AbstractWriter.
+     *
+     * @param  array $config
+     * @return string
+     * @throws Exception\UnprocessableConfigException for non-scalar values in
+     *     the $config array.
+     */
+    public function processConfig(array $config)
+    {
+        $string = '';
+
+        foreach ($config as $key => $value) {
+            if (! is_scalar($value)) {
+                throw new Exception\UnprocessableConfigException(sprintf(
+                    '%s configuration writer can only process scalar values; received "%s" for key "%s"',
+                    __CLASS__,
+                    is_object($value) ? get_class($value) : gettype($value),
+                    $key
+                ));
+            }
+
+            $value = (null === $value) ? '' : $value;
+
+            $string .= sprintf(
+                "%s%s%s\n",
+                $key,
+                $this->delimiter,
+                $value
+            );
+        }
+
+        return $string;
+    }
+}

vendor/zendframework/zend-config/src/Writer/Json.php

@@ -0,0 +1,31 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-config for the canonical source repository
+ * @copyright Copyright (c) 2005-2017 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-config/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Config\Writer;
+
+use Zend\Config\Exception;
+
+class Json extends AbstractWriter
+{
+    /**
+     * processConfig(): defined by AbstractWriter.
+     *
+     * @param  array $config
+     * @return string
+     * @throws Exception\RuntimeException if encoding errors occur.
+     */
+    public function processConfig(array $config)
+    {
+        $serialized = json_encode($config, JSON_UNESCAPED_SLASHES | JSON_PRETTY_PRINT);
+
+        if (false === $serialized) {
+            throw new Exception\RuntimeException(json_last_error_msg());
+        }
+
+        return $serialized;
+    }
+}

vendor/zendframework/zend-config/src/Writer/PhpArray.php

@@ -0,0 +1,236 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-config for the canonical source repository
+ * @copyright Copyright (c) 2005-2017 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-config/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Config\Writer;
+
+use Zend\Config\Exception;
+
+class PhpArray extends AbstractWriter
+{
+    /**
+     * @var string
+     */
+    const INDENT_STRING = '    ';
+
+    /**
+     * @var bool
+     */
+    protected $useBracketArraySyntax = false;
+
+    /**
+     * @var bool
+     */
+    protected $useClassNameScalars = false;
+
+    /**
+     * processConfig(): defined by AbstractWriter.
+     *
+     * @param  array $config
+     * @return string
+     */
+    public function processConfig(array $config)
+    {
+        $arraySyntax = [
+            'open' => $this->useBracketArraySyntax ? '[' : 'array(',
+            'close' => $this->useBracketArraySyntax ? ']' : ')'
+        ];
+
+        return "<?php\n" .
+        "return " . $arraySyntax['open'] . "\n" . $this->processIndented($config, $arraySyntax) .
+        $arraySyntax['close'] . ";\n";
+    }
+
+    /**
+     * Sets whether or not to use the PHP 5.4+ "[]" array syntax.
+     *
+     * @param  bool $value
+     * @return self
+     */
+    public function setUseBracketArraySyntax($value)
+    {
+        $this->useBracketArraySyntax = $value;
+        return $this;
+    }
+
+    /**
+     * Sets whether or not to render resolvable FQN strings as scalars, using PHP 5.5+ class-keyword
+     *
+     * @param boolean $value
+     * @return self
+     */
+    public function setUseClassNameScalars($value)
+    {
+        $this->useClassNameScalars = $value;
+        return $this;
+    }
+
+    /**
+     * @return boolean
+     */
+    public function getUseClassNameScalars()
+    {
+        return $this->useClassNameScalars;
+    }
+
+    /**
+     * toFile(): defined by Writer interface.
+     *
+     * @see    WriterInterface::toFile()
+     * @param  string  $filename
+     * @param  mixed   $config
+     * @param  bool $exclusiveLock
+     * @return void
+     * @throws Exception\InvalidArgumentException
+     * @throws Exception\RuntimeException
+     */
+    public function toFile($filename, $config, $exclusiveLock = true)
+    {
+        if (empty($filename)) {
+            throw new Exception\InvalidArgumentException('No file name specified');
+        }
+
+        $flags = 0;
+        if ($exclusiveLock) {
+            $flags |= LOCK_EX;
+        }
+
+        set_error_handler(
+            function ($error, $message = '') use ($filename) {
+                throw new Exception\RuntimeException(
+                    sprintf('Error writing to "%s": %s', $filename, $message),
+                    $error
+                );
+            },
+            E_WARNING
+        );
+
+        try {
+            // for Windows, paths are escaped.
+            $dirname = str_replace('\\', '\\\\', dirname($filename));
+
+            $string  = $this->toString($config);
+            $string  = str_replace("'" . $dirname, "__DIR__ . '", $string);
+
+            file_put_contents($filename, $string, $flags);
+        } catch (\Exception $e) {
+            restore_error_handler();
+            throw $e;
+        }
+
+        restore_error_handler();
+    }
+
+    /**
+     * Recursively processes a PHP config array structure into a readable format.
+     *
+     * @param  array $config
+     * @param  array $arraySyntax
+     * @param  int   $indentLevel
+     * @return string
+     */
+    protected function processIndented(array $config, array $arraySyntax, &$indentLevel = 1)
+    {
+        $arrayString = "";
+
+        foreach ($config as $key => $value) {
+            $arrayString .= str_repeat(self::INDENT_STRING, $indentLevel);
+            $arrayString .= (is_int($key) ? $key : $this->processStringKey($key)) . ' => ';
+
+            if (is_array($value)) {
+                if ($value === []) {
+                    $arrayString .= $arraySyntax['open'] . $arraySyntax['close'] . ",\n";
+                } else {
+                    $indentLevel++;
+                    $arrayString .= $arraySyntax['open'] . "\n"
+                        . $this->processIndented($value, $arraySyntax, $indentLevel)
+                        . str_repeat(self::INDENT_STRING, --$indentLevel) . $arraySyntax['close'] . ",\n";
+                }
+            } elseif (is_object($value)) {
+                $arrayString .= var_export($value, true) . ",\n";
+            } elseif (is_string($value)) {
+                $arrayString .= $this->processStringValue($value) . ",\n";
+            } elseif (is_bool($value)) {
+                $arrayString .= ($value ? 'true' : 'false') . ",\n";
+            } elseif ($value === null) {
+                $arrayString .= "null,\n";
+            } else {
+                $arrayString .= $value . ",\n";
+            }
+        }
+
+        return $arrayString;
+    }
+
+    /**
+     * Process a string configuration value
+     *
+     * @param string $value
+     * @return string
+     */
+    protected function processStringValue($value)
+    {
+        if ($this->useClassNameScalars && false !== ($fqnValue = $this->fqnStringToClassNameScalar($value))) {
+            return $fqnValue;
+        }
+
+        return var_export($value, true);
+    }
+
+    /**
+     * Process a string configuration key
+     *
+     * @param string $key
+     * @return string
+     */
+    protected function processStringKey($key)
+    {
+        if ($this->useClassNameScalars && false !== ($fqnKey = $this->fqnStringToClassNameScalar($key))) {
+            return $fqnKey;
+        }
+
+        return "'" . addslashes($key) . "'";
+    }
+
+    /**
+     * Attempts to convert a FQN string to class name scalar.
+     * Returns false if string is not a valid FQN or can not be resolved to an existing name.
+     *
+     * @param string $string
+     * @return bool|string
+     */
+    protected function fqnStringToClassNameScalar($string)
+    {
+        if (strlen($string) < 1) {
+            return false;
+        }
+
+        if ($string[0] !== '\\') {
+            $string = '\\' . $string;
+        }
+
+        if ($this->checkStringIsFqn($string)) {
+            return $string . '::class';
+        }
+
+        return false;
+    }
+
+    /**
+     * Check whether a string represents a resolvable FQCN
+     *
+     * @param string $string
+     * @return bool
+     */
+    protected function checkStringIsFqn($string)
+    {
+        if (! preg_match('/^(?:\x5c[a-zA-Z_\x7f-\xff][a-zA-Z0-9_\x7f-\xff]*)+$/', $string)) {
+            return false;
+        }
+
+        return class_exists($string) || interface_exists($string) || trait_exists($string);
+    }
+}

vendor/zendframework/zend-config/src/Writer/WriterInterface.php

@@ -0,0 +1,29 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-config for the canonical source repository
+ * @copyright Copyright (c) 2005-2017 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-config/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Config\Writer;
+
+interface WriterInterface
+{
+    /**
+     * Write a config object to a file.
+     *
+     * @param  string  $filename
+     * @param  mixed   $config
+     * @param  bool $exclusiveLock
+     * @return void
+     */
+    public function toFile($filename, $config, $exclusiveLock = true);
+
+    /**
+     * Write a config object to a string.
+     *
+     * @param  mixed $config
+     * @return string
+     */
+    public function toString($config);
+}

vendor/zendframework/zend-config/src/Writer/Xml.php

@@ -0,0 +1,89 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-config for the canonical source repository
+ * @copyright Copyright (c) 2005-2017 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-config/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Config\Writer;
+
+use XMLWriter;
+use Zend\Config\Exception;
+
+class Xml extends AbstractWriter
+{
+    /**
+     * processConfig(): defined by AbstractWriter.
+     *
+     * @param  array $config
+     * @return string
+     */
+    public function processConfig(array $config)
+    {
+        $writer = new XMLWriter();
+        $writer->openMemory();
+        $writer->setIndent(true);
+        $writer->setIndentString(str_repeat(' ', 4));
+
+        $writer->startDocument('1.0', 'UTF-8');
+        $writer->startElement('zend-config');
+
+        foreach ($config as $sectionName => $data) {
+            if (! is_array($data)) {
+                $writer->writeElement($sectionName, (string) $data);
+            } else {
+                $this->addBranch($sectionName, $data, $writer);
+            }
+        }
+
+        $writer->endElement();
+        $writer->endDocument();
+
+        return $writer->outputMemory();
+    }
+
+    /**
+     * Add a branch to an XML object recursively.
+     *
+     * @param  string    $branchName
+     * @param  array     $config
+     * @param  XMLWriter $writer
+     * @return void
+     * @throws Exception\RuntimeException
+     */
+    protected function addBranch($branchName, array $config, XMLWriter $writer)
+    {
+        $branchType = null;
+
+        foreach ($config as $key => $value) {
+            if ($branchType === null) {
+                if (is_numeric($key)) {
+                    $branchType = 'numeric';
+                } else {
+                    $writer->startElement($branchName);
+                    $branchType = 'string';
+                }
+            } elseif ($branchType !== (is_numeric($key) ? 'numeric' : 'string')) {
+                throw new Exception\RuntimeException('Mixing of string and numeric keys is not allowed');
+            }
+
+            if ($branchType === 'numeric') {
+                if (is_array($value)) {
+                    $this->addBranch($branchName, $value, $writer);
+                } else {
+                    $writer->writeElement($branchName, (string) $value);
+                }
+            } else {
+                if (is_array($value)) {
+                    $this->addBranch($key, $value, $writer);
+                } else {
+                    $writer->writeElement($key, (string) $value);
+                }
+            }
+        }
+
+        if ($branchType === 'string') {
+            $writer->endElement();
+        }
+    }
+}

vendor/zendframework/zend-config/src/Writer/Yaml.php

@@ -0,0 +1,83 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-config for the canonical source repository
+ * @copyright Copyright (c) 2005-2017 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-config/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Config\Writer;
+
+use Zend\Config\Exception;
+
+class Yaml extends AbstractWriter
+{
+    /**
+     * YAML encoder callback
+     *
+     * @var callable
+     */
+    protected $yamlEncoder;
+
+    /**
+     * Constructor
+     *
+     * @param callable|string|null $yamlEncoder
+     */
+    public function __construct($yamlEncoder = null)
+    {
+        if ($yamlEncoder !== null) {
+            $this->setYamlEncoder($yamlEncoder);
+        } else {
+            if (function_exists('yaml_emit')) {
+                $this->setYamlEncoder('yaml_emit');
+            }
+        }
+    }
+
+    /**
+     * Get callback for decoding YAML
+     *
+     * @return callable
+     */
+    public function getYamlEncoder()
+    {
+        return $this->yamlEncoder;
+    }
+
+    /**
+     * Set callback for decoding YAML
+     *
+     * @param callable $yamlEncoder the decoder to set
+     * @return self
+     * @throws Exception\InvalidArgumentException
+     */
+    public function setYamlEncoder($yamlEncoder)
+    {
+        if (! is_callable($yamlEncoder)) {
+            throw new Exception\InvalidArgumentException('Invalid parameter to setYamlEncoder() - must be callable');
+        }
+        $this->yamlEncoder = $yamlEncoder;
+        return $this;
+    }
+
+    /**
+     * processConfig(): defined by AbstractWriter.
+     *
+     * @param  array $config
+     * @return string
+     * @throws Exception\RuntimeException
+     */
+    public function processConfig(array $config)
+    {
+        if (null === $this->getYamlEncoder()) {
+            throw new Exception\RuntimeException("You didn't specify a Yaml callback encoder");
+        }
+
+        $config = call_user_func($this->getYamlEncoder(), $config);
+        if (null === $config) {
+            throw new Exception\RuntimeException("Error generating YAML data");
+        }
+
+        return $config;
+    }
+}

vendor/zendframework/zend-config/src/WriterPluginManager.php

@@ -0,0 +1,97 @@
+<?php
+/**
+ * @see       https://github.com/zendframework/zend-config for the canonical source repository
+ * @copyright Copyright (c) 2005-2017 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license   https://github.com/zendframework/zend-config/blob/master/LICENSE.md New BSD License
+ */
+
+namespace Zend\Config;
+
+use Interop\Container\ContainerInterface;
+use Zend\ServiceManager\AbstractPluginManager;
+use Zend\ServiceManager\Exception\InvalidServiceException;
+use Zend\ServiceManager\Factory\InvokableFactory;
+
+class WriterPluginManager extends AbstractPluginManager
+{
+    protected $instanceOf = Writer\AbstractWriter::class;
+
+    protected $aliases = [
+        'ini'            => Writer\Ini::class,
+        'Ini'            => Writer\Ini::class,
+        'json'           => Writer\Json::class,
+        'Json'           => Writer\Json::class,
+        'php'            => Writer\PhpArray::class,
+        'phparray'       => Writer\PhpArray::class,
+        'phpArray'       => Writer\PhpArray::class,
+        'PhpArray'       => Writer\PhpArray::class,
+        'yaml'           => Writer\Yaml::class,
+        'Yaml'           => Writer\Yaml::class,
+        'xml'            => Writer\Xml::class,
+        'Xml'            => Writer\Xml::class,
+        'javaproperties' => Writer\JavaProperties::class,
+        'javaProperties' => Writer\JavaProperties::class,
+        'JavaProperties' => Writer\JavaProperties::class,
+    ];
+
+    protected $factories = [
+        Writer\Ini::class            => InvokableFactory::class,
+        Writer\JavaProperties::class => InvokableFactory::class,
+        Writer\Json::class           => InvokableFactory::class,
+        Writer\PhpArray::class       => InvokableFactory::class,
+        Writer\Yaml::class           => InvokableFactory::class,
+        Writer\Xml::class            => InvokableFactory::class,
+        // Legacy (v2) due to alias resolution; canonical form of resolved
+        // alias is used to look up the factory, while the non-normalized
+        // resolved alias is used as the requested name passed to the factory.
+        'zendconfigwriterini'            => InvokableFactory::class,
+        'zendconfigwriterjavaproperties' => InvokableFactory::class,
+        'zendconfigwriterjson'           => InvokableFactory::class,
+        'zendconfigwriterphparray'       => InvokableFactory::class,
+        'zendconfigwriteryaml'           => InvokableFactory::class,
+        'zendconfigwriterxml'            => InvokableFactory::class,
+    ];
+
+    /**
+     * Validate the plugin is of the expected type (v3).
+     *
+     * Validates against `$instanceOf`.
+     *
+     * @param mixed $instance
+     * @throws InvalidServiceException
+     */
+    public function validate($instance)
+    {
+        if (! $instance instanceof $this->instanceOf) {
+            throw new InvalidServiceException(sprintf(
+                '%s can only create instances of %s; %s is invalid',
+                get_class($this),
+                $this->instanceOf,
+                (is_object($instance) ? get_class($instance) : gettype($instance))
+            ));
+        }
+    }
+
+    /**
+     * Validate the plugin is of the expected type (v2).
+     *
+     * Proxies to `validate()`.
+     *
+     * @param mixed $instance
+     * @throws Exception\InvalidArgumentException
+     */
+    public function validatePlugin($instance)
+    {
+        try {
+            $this->validate($instance);
+        } catch (InvalidServiceException $e) {
+            throw new Exception\InvalidArgumentException($e->getMessage(), $e->getCode(), $e);
+        }
+    }
+
+    public function __construct(ContainerInterface $container, array $config = [])
+    {
+        $config = array_merge_recursive(['aliases' => $this->aliases], $config);
+        parent::__construct($container, $config);
+    }
+}