first commit

vendor/filp/whoops/src/Whoops/Exception/ErrorException.php

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+<?php
+/**
+ * Whoops - php errors for cool kids
+ * @author Filipe Dobreira <http://github.com/filp>
+ */
+
+namespace Whoops\Exception;
+
+use ErrorException as BaseErrorException;
+
+/**
+ * Wraps ErrorException; mostly used for typing (at least now)
+ * to easily cleanup the stack trace of redundant info.
+ */
+class ErrorException extends BaseErrorException
+{
+}

vendor/filp/whoops/src/Whoops/Exception/Formatter.php

@@ -0,0 +1,77 @@
+<?php
+/**
+ * Whoops - php errors for cool kids
+ * @author Filipe Dobreira <http://github.com/filp>
+ */
+
+namespace Whoops\Exception;
+
+use Whoops\Inspector\InspectorInterface;
+
+class Formatter
+{
+    /**
+     * Returns all basic information about the exception in a simple array
+     * for further convertion to other languages
+     * @param  InspectorInterface $inspector
+     * @param  bool               $shouldAddTrace
+     * @param  array<callable>    $frameFilters
+     * @return array
+     */
+    public static function formatExceptionAsDataArray(InspectorInterface $inspector, $shouldAddTrace, array $frameFilters = [])
+    {
+        $exception = $inspector->getException();
+        $response = [
+            'type'    => get_class($exception),
+            'message' => $exception->getMessage(),
+            'code'    => $exception->getCode(),
+            'file'    => $exception->getFile(),
+            'line'    => $exception->getLine(),
+        ];
+
+        if ($shouldAddTrace) {
+            $frames    = $inspector->getFrames($frameFilters);
+            $frameData = [];
+
+            foreach ($frames as $frame) {
+                /** @var Frame $frame */
+                $frameData[] = [
+                    'file'     => $frame->getFile(),
+                    'line'     => $frame->getLine(),
+                    'function' => $frame->getFunction(),
+                    'class'    => $frame->getClass(),
+                    'args'     => $frame->getArgs(),
+                ];
+            }
+
+            $response['trace'] = $frameData;
+        }
+
+        return $response;
+    }
+
+    public static function formatExceptionPlain(InspectorInterface $inspector)
+    {
+        $message = $inspector->getException()->getMessage();
+        $frames = $inspector->getFrames();
+
+        $plain = $inspector->getExceptionName();
+        $plain .= ' thrown with message "';
+        $plain .= $message;
+        $plain .= '"'."\n\n";
+
+        $plain .= "Stacktrace:\n";
+        foreach ($frames as $i => $frame) {
+            $plain .= "#". (count($frames) - $i - 1). " ";
+            $plain .= $frame->getClass() ?: '';
+            $plain .= $frame->getClass() && $frame->getFunction() ? ":" : "";
+            $plain .= $frame->getFunction() ?: '';
+            $plain .= ' in ';
+            $plain .= ($frame->getFile() ?: '<#unknown>');
+            $plain .= ':';
+            $plain .= (int) $frame->getLine(). "\n";
+        }
+
+        return $plain;
+    }
+}

vendor/filp/whoops/src/Whoops/Exception/Frame.php

@@ -0,0 +1,311 @@
+<?php
+/**
+ * Whoops - php errors for cool kids
+ * @author Filipe Dobreira <http://github.com/filp>
+ */
+
+namespace Whoops\Exception;
+
+use InvalidArgumentException;
+use Serializable;
+
+class Frame implements Serializable
+{
+    /**
+     * @var array
+     */
+    protected $frame;
+
+    /**
+     * @var string
+     */
+    protected $fileContentsCache;
+
+    /**
+     * @var array[]
+     */
+    protected $comments = [];
+
+    /**
+     * @var bool
+     */
+    protected $application;
+
+    public function __construct(array $frame)
+    {
+        $this->frame = $frame;
+    }
+
+    /**
+     * @param  bool        $shortened
+     * @return string|null
+     */
+    public function getFile($shortened = false)
+    {
+        if (empty($this->frame['file'])) {
+            return null;
+        }
+
+        $file = $this->frame['file'];
+
+        // Check if this frame occurred within an eval().
+        // @todo: This can be made more reliable by checking if we've entered
+        // eval() in a previous trace, but will need some more work on the upper
+        // trace collector(s).
+        if (preg_match('/^(.*)\((\d+)\) : (?:eval\(\)\'d|assert) code$/', $file, $matches)) {
+            $file = $this->frame['file'] = $matches[1];
+            $this->frame['line'] = (int) $matches[2];
+        }
+
+        if ($shortened && is_string($file)) {
+            // Replace the part of the path that all frames have in common, and add 'soft hyphens' for smoother line-breaks.
+            $dirname = dirname(dirname(dirname(dirname(dirname(dirname(__DIR__))))));
+            if ($dirname !== '/') {
+                $file = str_replace($dirname, "&hellip;", $file);
+            }
+            $file = str_replace("/", "/&shy;", $file);
+        }
+
+        return $file;
+    }
+
+    /**
+     * @return int|null
+     */
+    public function getLine()
+    {
+        return isset($this->frame['line']) ? $this->frame['line'] : null;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getClass()
+    {
+        return isset($this->frame['class']) ? $this->frame['class'] : null;
+    }
+
+    /**
+     * @return string|null
+     */
+    public function getFunction()
+    {
+        return isset($this->frame['function']) ? $this->frame['function'] : null;
+    }
+
+    /**
+     * @return array
+     */
+    public function getArgs()
+    {
+        return isset($this->frame['args']) ? (array) $this->frame['args'] : [];
+    }
+
+    /**
+     * Returns the full contents of the file for this frame,
+     * if it's known.
+     * @return string|null
+     */
+    public function getFileContents()
+    {
+        if ($this->fileContentsCache === null && $filePath = $this->getFile()) {
+            // Leave the stage early when 'Unknown' or '[internal]' is passed
+            // this would otherwise raise an exception when
+            // open_basedir is enabled.
+            if ($filePath === "Unknown" || $filePath === '[internal]') {
+                return null;
+            }
+
+            try {
+                $this->fileContentsCache = file_get_contents($filePath);
+            } catch (ErrorException $exception) {
+                // Internal file paths of PHP extensions cannot be opened
+            }
+        }
+
+        return $this->fileContentsCache;
+    }
+
+    /**
+     * Adds a comment to this frame, that can be received and
+     * used by other handlers. For example, the PrettyPage handler
+     * can attach these comments under the code for each frame.
+     *
+     * An interesting use for this would be, for example, code analysis
+     * & annotations.
+     *
+     * @param string $comment
+     * @param string $context Optional string identifying the origin of the comment
+     */
+    public function addComment($comment, $context = 'global')
+    {
+        $this->comments[] = [
+            'comment' => $comment,
+            'context' => $context,
+        ];
+    }
+
+    /**
+     * Returns all comments for this frame. Optionally allows
+     * a filter to only retrieve comments from a specific
+     * context.
+     *
+     * @param  string  $filter
+     * @return array[]
+     */
+    public function getComments($filter = null)
+    {
+        $comments = $this->comments;
+
+        if ($filter !== null) {
+            $comments = array_filter($comments, function ($c) use ($filter) {
+                return $c['context'] == $filter;
+            });
+        }
+
+        return $comments;
+    }
+
+    /**
+     * Returns the array containing the raw frame data from which
+     * this Frame object was built
+     *
+     * @return array
+     */
+    public function getRawFrame()
+    {
+        return $this->frame;
+    }
+
+    /**
+     * Returns the contents of the file for this frame as an
+     * array of lines, and optionally as a clamped range of lines.
+     *
+     * NOTE: lines are 0-indexed
+     *
+     * @example
+     *     Get all lines for this file
+     *     $frame->getFileLines(); // => array( 0 => '<?php', 1 => '...', ...)
+     * @example
+     *     Get one line for this file, starting at line 10 (zero-indexed, remember!)
+     *     $frame->getFileLines(9, 1); // array( 9 => '...' )
+     *
+     * @throws InvalidArgumentException if $length is less than or equal to 0
+     * @param  int                      $start
+     * @param  int                      $length
+     * @return string[]|null
+     */
+    public function getFileLines($start = 0, $length = null)
+    {
+        if (null !== ($contents = $this->getFileContents())) {
+            $lines = explode("\n", $contents);
+
+            // Get a subset of lines from $start to $end
+            if ($length !== null) {
+                $start  = (int) $start;
+                $length = (int) $length;
+                if ($start < 0) {
+                    $start = 0;
+                }
+
+                if ($length <= 0) {
+                    throw new InvalidArgumentException(
+                        "\$length($length) cannot be lower or equal to 0"
+                    );
+                }
+
+                $lines = array_slice($lines, $start, $length, true);
+            }
+
+            return $lines;
+        }
+    }
+
+    /**
+     * Implements the Serializable interface, with special
+     * steps to also save the existing comments.
+     *
+     * @see Serializable::serialize
+     * @return string
+     */
+    public function serialize()
+    {
+        $frame = $this->frame;
+        if (!empty($this->comments)) {
+            $frame['_comments'] = $this->comments;
+        }
+
+        return serialize($frame);
+    }
+
+    public function __serialize()
+    {
+        $frame = $this->frame;
+        if (!empty($this->comments)) {
+            $frame['_comments'] = $this->comments;
+        }
+        return $frame;
+    }
+
+    /**
+     * Unserializes the frame data, while also preserving
+     * any existing comment data.
+     *
+     * @see Serializable::unserialize
+     * @param string $serializedFrame
+     */
+    public function unserialize($serializedFrame)
+    {
+        $frame = unserialize($serializedFrame);
+
+        if (!empty($frame['_comments'])) {
+            $this->comments = $frame['_comments'];
+            unset($frame['_comments']);
+        }
+
+        $this->frame = $frame;
+    }
+
+    public function __unserialize($frame)
+    {
+        if (!empty($frame['_comments'])) {
+            $this->comments = $frame['_comments'];
+            unset($frame['_comments']);
+        }
+
+        $this->frame = $frame;
+    }
+
+    /**
+     * Compares Frame against one another
+     * @param  Frame $frame
+     * @return bool
+     */
+    public function equals(Frame $frame)
+    {
+        if (!$this->getFile() || $this->getFile() === 'Unknown' || !$this->getLine()) {
+            return false;
+        }
+        return $frame->getFile() === $this->getFile() && $frame->getLine() === $this->getLine();
+    }
+
+    /**
+     * Returns whether this frame belongs to the application or not.
+     *
+     * @return boolean
+     */
+    public function isApplication()
+    {
+        return $this->application;
+    }
+
+    /**
+     * Mark as an frame belonging to the application.
+     *
+     * @param boolean $application
+     */
+    public function setApplication($application)
+    {
+        $this->application = $application;
+    }
+}

vendor/filp/whoops/src/Whoops/Exception/FrameCollection.php

@@ -0,0 +1,219 @@
+<?php
+/**
+ * Whoops - php errors for cool kids
+ * @author Filipe Dobreira <http://github.com/filp>
+ */
+
+namespace Whoops\Exception;
+
+use ArrayAccess;
+use ArrayIterator;
+use Countable;
+use IteratorAggregate;
+use ReturnTypeWillChange;
+use Serializable;
+use UnexpectedValueException;
+
+/**
+ * Exposes a fluent interface for dealing with an ordered list
+ * of stack-trace frames.
+ */
+class FrameCollection implements ArrayAccess, IteratorAggregate, Serializable, Countable
+{
+    /**
+     * @var array[]
+     */
+    private $frames;
+
+    public function __construct(array $frames)
+    {
+        $this->frames = array_map(function ($frame) {
+            return new Frame($frame);
+        }, $frames);
+    }
+
+    /**
+     * Filters frames using a callable, returns the same FrameCollection
+     *
+     * @param  callable        $callable
+     * @return FrameCollection
+     */
+    public function filter($callable)
+    {
+        $this->frames = array_values(array_filter($this->frames, $callable));
+        return $this;
+    }
+
+    /**
+     * Map the collection of frames
+     *
+     * @param  callable        $callable
+     * @return FrameCollection
+     */
+    public function map($callable)
+    {
+        // Contain the map within a higher-order callable
+        // that enforces type-correctness for the $callable
+        $this->frames = array_map(function ($frame) use ($callable) {
+            $frame = call_user_func($callable, $frame);
+
+            if (!$frame instanceof Frame) {
+                throw new UnexpectedValueException(
+                    "Callable to " . __CLASS__ . "::map must return a Frame object"
+                );
+            }
+
+            return $frame;
+        }, $this->frames);
+
+        return $this;
+    }
+
+    /**
+     * Returns an array with all frames, does not affect
+     * the internal array.
+     *
+     * @todo   If this gets any more complex than this,
+     *         have getIterator use this method.
+     * @see    FrameCollection::getIterator
+     * @return array
+     */
+    public function getArray()
+    {
+        return $this->frames;
+    }
+
+    /**
+     * @see IteratorAggregate::getIterator
+     * @return ArrayIterator
+     */
+    #[ReturnTypeWillChange]
+    public function getIterator()
+    {
+        return new ArrayIterator($this->frames);
+    }
+
+    /**
+     * @see ArrayAccess::offsetExists
+     * @param int $offset
+     */
+    #[ReturnTypeWillChange]
+    public function offsetExists($offset)
+    {
+        return isset($this->frames[$offset]);
+    }
+
+    /**
+     * @see ArrayAccess::offsetGet
+     * @param int $offset
+     */
+    #[ReturnTypeWillChange]
+    public function offsetGet($offset)
+    {
+        return $this->frames[$offset];
+    }
+
+    /**
+     * @see ArrayAccess::offsetSet
+     * @param int $offset
+     */
+    #[ReturnTypeWillChange]
+    public function offsetSet($offset, $value)
+    {
+        throw new \Exception(__CLASS__ . ' is read only');
+    }
+
+    /**
+     * @see ArrayAccess::offsetUnset
+     * @param int $offset
+     */
+    #[ReturnTypeWillChange]
+    public function offsetUnset($offset)
+    {
+        throw new \Exception(__CLASS__ . ' is read only');
+    }
+
+    /**
+     * @see Countable::count
+     * @return int
+     */
+    #[ReturnTypeWillChange]
+    public function count()
+    {
+        return count($this->frames);
+    }
+
+    /**
+     * Count the frames that belongs to the application.
+     *
+     * @return int
+     */
+    public function countIsApplication()
+    {
+        return count(array_filter($this->frames, function (Frame $f) {
+            return $f->isApplication();
+        }));
+    }
+
+    /**
+     * @see Serializable::serialize
+     * @return string
+     */
+    #[ReturnTypeWillChange]
+    public function serialize()
+    {
+        return serialize($this->frames);
+    }
+
+    /**
+     * @see Serializable::unserialize
+     * @param string $serializedFrames
+     */
+    #[ReturnTypeWillChange]
+    public function unserialize($serializedFrames)
+    {
+        $this->frames = unserialize($serializedFrames);
+    }
+
+    public function __serialize()
+    {
+        return $this->frames;
+    }
+
+    public function __unserialize(array $serializedFrames)
+    {
+        $this->frames = $serializedFrames;
+    }
+
+    /**
+     * @param Frame[] $frames Array of Frame instances, usually from $e->getPrevious()
+     */
+    public function prependFrames(array $frames)
+    {
+        $this->frames = array_merge($frames, $this->frames);
+    }
+
+    /**
+     * Gets the innermost part of stack trace that is not the same as that of outer exception
+     *
+     * @param  FrameCollection $parentFrames Outer exception frames to compare tail against
+     * @return Frame[]
+     */
+    public function topDiff(FrameCollection $parentFrames)
+    {
+        $diff = $this->frames;
+
+        $parentFrames = $parentFrames->getArray();
+        $p = count($parentFrames)-1;
+
+        for ($i = count($diff)-1; $i >= 0 && $p >= 0; $i--) {
+            /** @var Frame $tailFrame */
+            $tailFrame = $diff[$i];
+            if ($tailFrame->equals($parentFrames[$p])) {
+                unset($diff[$i]);
+            }
+            $p--;
+        }
+        return $diff;
+    }
+}

vendor/filp/whoops/src/Whoops/Exception/Inspector.php

@@ -0,0 +1,341 @@
+<?php
+/**
+ * Whoops - php errors for cool kids
+ * @author Filipe Dobreira <http://github.com/filp>
+ */
+
+namespace Whoops\Exception;
+
+use Whoops\Inspector\InspectorFactory;
+use Whoops\Inspector\InspectorInterface;
+use Whoops\Util\Misc;
+
+class Inspector implements InspectorInterface
+{
+    /**
+     * @var \Throwable
+     */
+    private $exception;
+
+    /**
+     * @var \Whoops\Exception\FrameCollection
+     */
+    private $frames;
+
+    /**
+     * @var \Whoops\Exception\Inspector
+     */
+    private $previousExceptionInspector;
+
+    /**
+     * @var \Throwable[]
+     */
+    private $previousExceptions;
+
+    /**
+     * @var \Whoops\Inspector\InspectorFactoryInterface|null
+     */
+    protected $inspectorFactory;
+
+    /**
+     * @param \Throwable $exception The exception to inspect
+     * @param \Whoops\Inspector\InspectorFactoryInterface $factory
+     */
+    public function __construct($exception, $factory = null)
+    {
+        $this->exception = $exception;
+        $this->inspectorFactory = $factory ?: new InspectorFactory();
+    }
+
+    /**
+     * @return \Throwable
+     */
+    public function getException()
+    {
+        return $this->exception;
+    }
+
+    /**
+     * @return string
+     */
+    public function getExceptionName()
+    {
+        return get_class($this->exception);
+    }
+
+    /**
+     * @return string
+     */
+    public function getExceptionMessage()
+    {
+        return $this->extractDocrefUrl($this->exception->getMessage())['message'];
+    }
+
+    /**
+     * @return string[]
+     */
+    public function getPreviousExceptionMessages()
+    {
+        return array_map(function ($prev) {
+            /** @var \Throwable $prev */
+            return $this->extractDocrefUrl($prev->getMessage())['message'];
+        }, $this->getPreviousExceptions());
+    }
+
+    /**
+     * @return int[]
+     */
+    public function getPreviousExceptionCodes()
+    {
+        return array_map(function ($prev) {
+            /** @var \Throwable $prev */
+            return $prev->getCode();
+        }, $this->getPreviousExceptions());
+    }
+
+    /**
+     * Returns a url to the php-manual related to the underlying error - when available.
+     *
+     * @return string|null
+     */
+    public function getExceptionDocrefUrl()
+    {
+        return $this->extractDocrefUrl($this->exception->getMessage())['url'];
+    }
+
+    private function extractDocrefUrl($message)
+    {
+        $docref = [
+            'message' => $message,
+            'url' => null,
+        ];
+
+        // php embbeds urls to the manual into the Exception message with the following ini-settings defined
+        // http://php.net/manual/en/errorfunc.configuration.php#ini.docref-root
+        if (!ini_get('html_errors') || !ini_get('docref_root')) {
+            return $docref;
+        }
+
+        $pattern = "/\[<a href='([^']+)'>(?:[^<]+)<\/a>\]/";
+        if (preg_match($pattern, $message, $matches)) {
+            // -> strip those automatically generated links from the exception message
+            $docref['message'] = preg_replace($pattern, '', $message, 1);
+            $docref['url'] = $matches[1];
+        }
+
+        return $docref;
+    }
+
+    /**
+     * Does the wrapped Exception has a previous Exception?
+     * @return bool
+     */
+    public function hasPreviousException()
+    {
+        return $this->previousExceptionInspector || $this->exception->getPrevious();
+    }
+
+    /**
+     * Returns an Inspector for a previous Exception, if any.
+     * @todo   Clean this up a bit, cache stuff a bit better.
+     * @return Inspector
+     */
+    public function getPreviousExceptionInspector()
+    {
+        if ($this->previousExceptionInspector === null) {
+            $previousException = $this->exception->getPrevious();
+
+            if ($previousException) {
+                $this->previousExceptionInspector = $this->inspectorFactory->create($previousException);
+            }
+        }
+
+        return $this->previousExceptionInspector;
+    }
+
+
+    /**
+     * Returns an array of all previous exceptions for this inspector's exception
+     * @return \Throwable[]
+     */
+    public function getPreviousExceptions()
+    {
+        if ($this->previousExceptions === null) {
+            $this->previousExceptions = [];
+
+            $prev = $this->exception->getPrevious();
+            while ($prev !== null) {
+                $this->previousExceptions[] = $prev;
+                $prev = $prev->getPrevious();
+            }
+        }
+
+        return $this->previousExceptions;
+    }
+
+    /**
+     * Returns an iterator for the inspected exception's
+     * frames.
+     * 
+     * @param array<callable> $frameFilters
+     * 
+     * @return \Whoops\Exception\FrameCollection
+     */
+    public function getFrames(array $frameFilters = [])
+    {
+        if ($this->frames === null) {
+            $frames = $this->getTrace($this->exception);
+
+            // Fill empty line/file info for call_user_func_array usages (PHP Bug #44428)
+            foreach ($frames as $k => $frame) {
+                if (empty($frame['file'])) {
+                    // Default values when file and line are missing
+                    $file = '[internal]';
+                    $line = 0;
+
+                    $next_frame = !empty($frames[$k + 1]) ? $frames[$k + 1] : [];
+
+                    if ($this->isValidNextFrame($next_frame)) {
+                        $file = $next_frame['file'];
+                        $line = $next_frame['line'];
+                    }
+
+                    $frames[$k]['file'] = $file;
+                    $frames[$k]['line'] = $line;
+                }
+            }
+
+            // Find latest non-error handling frame index ($i) used to remove error handling frames
+            $i = 0;
+            foreach ($frames as $k => $frame) {
+                if ($frame['file'] == $this->exception->getFile() && $frame['line'] == $this->exception->getLine()) {
+                    $i = $k;
+                }
+            }
+
+            // Remove error handling frames
+            if ($i > 0) {
+                array_splice($frames, 0, $i);
+            }
+
+            $firstFrame = $this->getFrameFromException($this->exception);
+            array_unshift($frames, $firstFrame);
+
+            $this->frames = new FrameCollection($frames);
+
+            if ($previousInspector = $this->getPreviousExceptionInspector()) {
+                // Keep outer frame on top of the inner one
+                $outerFrames = $this->frames;
+                $newFrames = clone $previousInspector->getFrames();
+                // I assume it will always be set, but let's be safe
+                if (isset($newFrames[0])) {
+                    $newFrames[0]->addComment(
+                        $previousInspector->getExceptionMessage(),
+                        'Exception message:'
+                    );
+                }
+                $newFrames->prependFrames($outerFrames->topDiff($newFrames));
+                $this->frames = $newFrames;
+            }
+
+            // Apply frame filters callbacks on the frames stack
+            if (!empty($frameFilters)) {
+                foreach ($frameFilters as $filterCallback) {
+                    $this->frames->filter($filterCallback);
+                }
+            }
+        }
+
+        return $this->frames;
+    }
+
+    /**
+     * Gets the backtrace from an exception.
+     *
+     * If xdebug is installed
+     *
+     * @param \Throwable $e
+     * @return array
+     */
+    protected function getTrace($e)
+    {
+        $traces = $e->getTrace();
+
+        // Get trace from xdebug if enabled, failure exceptions only trace to the shutdown handler by default
+        if (!$e instanceof \ErrorException) {
+            return $traces;
+        }
+
+        if (!Misc::isLevelFatal($e->getSeverity())) {
+            return $traces;
+        }
+
+        if (!extension_loaded('xdebug') || !function_exists('xdebug_is_enabled') || !xdebug_is_enabled()) {
+            return $traces;
+        }
+
+        // Use xdebug to get the full stack trace and remove the shutdown handler stack trace
+        $stack = array_reverse(xdebug_get_function_stack());
+        $trace = debug_backtrace(DEBUG_BACKTRACE_IGNORE_ARGS);
+        $traces = array_diff_key($stack, $trace);
+
+        return $traces;
+    }
+
+    /**
+     * Given an exception, generates an array in the format
+     * generated by Exception::getTrace()
+     * @param  \Throwable $exception
+     * @return array
+     */
+    protected function getFrameFromException($exception)
+    {
+        return [
+            'file'  => $exception->getFile(),
+            'line'  => $exception->getLine(),
+            'class' => get_class($exception),
+            'args'  => [
+                $exception->getMessage(),
+            ],
+        ];
+    }
+
+    /**
+     * Given an error, generates an array in the format
+     * generated by ErrorException
+     * @param  ErrorException $exception
+     * @return array
+     */
+    protected function getFrameFromError(ErrorException $exception)
+    {
+        return [
+            'file'  => $exception->getFile(),
+            'line'  => $exception->getLine(),
+            'class' => null,
+            'args'  => [],
+        ];
+    }
+
+    /**
+     * Determine if the frame can be used to fill in previous frame's missing info
+     * happens for call_user_func and call_user_func_array usages (PHP Bug #44428)
+     *
+     * @return bool
+     */
+    protected function isValidNextFrame(array $frame)
+    {
+        if (empty($frame['file'])) {
+            return false;
+        }
+
+        if (empty($frame['line'])) {
+            return false;
+        }
+
+        if (empty($frame['function']) || !stristr($frame['function'], 'call_user_func')) {
+            return false;
+        }
+
+        return true;
+    }
+}

vendor/filp/whoops/src/Whoops/Handler/CallbackHandler.php

@@ -0,0 +1,52 @@
+<?php
+/**
+ * Whoops - php errors for cool kids
+ * @author Filipe Dobreira <http://github.com/filp>
+ */
+
+namespace Whoops\Handler;
+
+use InvalidArgumentException;
+
+/**
+ * Wrapper for Closures passed as handlers. Can be used
+ * directly, or will be instantiated automagically by Whoops\Run
+ * if passed to Run::pushHandler
+ */
+class CallbackHandler extends Handler
+{
+    /**
+     * @var callable
+     */
+    protected $callable;
+
+    /**
+     * @throws InvalidArgumentException If argument is not callable
+     * @param  callable                 $callable
+     */
+    public function __construct($callable)
+    {
+        if (!is_callable($callable)) {
+            throw new InvalidArgumentException(
+                'Argument to ' . __METHOD__ . ' must be valid callable'
+            );
+        }
+
+        $this->callable = $callable;
+    }
+
+    /**
+     * @return int|null
+     */
+    public function handle()
+    {
+        $exception = $this->getException();
+        $inspector = $this->getInspector();
+        $run       = $this->getRun();
+        $callable  = $this->callable;
+
+        // invoke the callable directly, to get simpler stacktraces (in comparison to call_user_func).
+        // this assumes that $callable is a properly typed php-callable, which we check in __construct().
+        return $callable($exception, $inspector, $run);
+    }
+}

vendor/filp/whoops/src/Whoops/Handler/Handler.php

@@ -0,0 +1,95 @@
+<?php
+/**
+ * Whoops - php errors for cool kids
+ * @author Filipe Dobreira <http://github.com/filp>
+ */
+
+namespace Whoops\Handler;
+
+use Whoops\Inspector\InspectorInterface;
+use Whoops\RunInterface;
+
+/**
+ * Abstract implementation of a Handler.
+ */
+abstract class Handler implements HandlerInterface
+{
+    /*
+     Return constants that can be returned from Handler::handle
+     to message the handler walker.
+     */
+    const DONE         = 0x10; // returning this is optional, only exists for
+                               // semantic purposes
+    /**
+     * The Handler has handled the Throwable in some way, and wishes to skip any other Handler.
+     * Execution will continue.
+     */
+    const LAST_HANDLER = 0x20;
+    /**
+     * The Handler has handled the Throwable in some way, and wishes to quit/stop execution
+     */
+    const QUIT         = 0x30;
+
+    /**
+     * @var RunInterface
+     */
+    private $run;
+
+    /**
+     * @var InspectorInterface $inspector
+     */
+    private $inspector;
+
+    /**
+     * @var \Throwable $exception
+     */
+    private $exception;
+
+    /**
+     * @param RunInterface $run
+     */
+    public function setRun(RunInterface $run)
+    {
+        $this->run = $run;
+    }
+
+    /**
+     * @return RunInterface
+     */
+    protected function getRun()
+    {
+        return $this->run;
+    }
+
+    /**
+     * @param InspectorInterface $inspector
+     */
+    public function setInspector(InspectorInterface $inspector)
+    {
+        $this->inspector = $inspector;
+    }
+
+    /**
+     * @return InspectorInterface
+     */
+    protected function getInspector()
+    {
+        return $this->inspector;
+    }
+
+    /**
+     * @param \Throwable $exception
+     */
+    public function setException($exception)
+    {
+        $this->exception = $exception;
+    }
+
+    /**
+     * @return \Throwable
+     */
+    protected function getException()
+    {
+        return $this->exception;
+    }
+}

vendor/filp/whoops/src/Whoops/Handler/HandlerInterface.php

@@ -0,0 +1,36 @@
+<?php
+/**
+ * Whoops - php errors for cool kids
+ * @author Filipe Dobreira <http://github.com/filp>
+ */
+
+namespace Whoops\Handler;
+
+use Whoops\Inspector\InspectorInterface;
+use Whoops\RunInterface;
+
+interface HandlerInterface
+{
+    /**
+     * @return int|null A handler may return nothing, or a Handler::HANDLE_* constant
+     */
+    public function handle();
+
+    /**
+     * @param  RunInterface  $run
+     * @return void
+     */
+    public function setRun(RunInterface $run);
+
+    /**
+     * @param  \Throwable $exception
+     * @return void
+     */
+    public function setException($exception);
+
+    /**
+     * @param  InspectorInterface $inspector
+     * @return void
+     */
+    public function setInspector(InspectorInterface $inspector);
+}

vendor/filp/whoops/src/Whoops/Handler/JsonResponseHandler.php

@@ -0,0 +1,90 @@
+<?php
+/**
+ * Whoops - php errors for cool kids
+ * @author Filipe Dobreira <http://github.com/filp>
+ */
+
+namespace Whoops\Handler;
+
+use Whoops\Exception\Formatter;
+
+/**
+ * Catches an exception and converts it to a JSON
+ * response. Additionally can also return exception
+ * frames for consumption by an API.
+ */
+class JsonResponseHandler extends Handler
+{
+    /**
+     * @var bool
+     */
+    private $returnFrames = false;
+
+    /**
+     * @var bool
+     */
+    private $jsonApi = false;
+
+    /**
+     * Returns errors[[]] instead of error[] to be in compliance with the json:api spec
+     * @param bool $jsonApi Default is false
+     * @return static
+     */
+    public function setJsonApi($jsonApi = false)
+    {
+        $this->jsonApi = (bool) $jsonApi;
+        return $this;
+    }
+
+    /**
+     * @param  bool|null  $returnFrames
+     * @return bool|static
+     */
+    public function addTraceToOutput($returnFrames = null)
+    {
+        if (func_num_args() == 0) {
+            return $this->returnFrames;
+        }
+
+        $this->returnFrames = (bool) $returnFrames;
+        return $this;
+    }
+
+    /**
+     * @return int
+     */
+    public function handle()
+    {
+        if ($this->jsonApi === true) {
+            $response = [
+                'errors' => [
+                    Formatter::formatExceptionAsDataArray(
+                        $this->getInspector(),
+                        $this->addTraceToOutput(),
+                        $this->getRun()->getFrameFilters()
+                    ),
+                ]
+            ];
+        } else {
+            $response = [
+                'error' => Formatter::formatExceptionAsDataArray(
+                    $this->getInspector(),
+                    $this->addTraceToOutput(),
+                    $this->getRun()->getFrameFilters()
+                ),
+            ];
+        }
+
+        echo json_encode($response, defined('JSON_PARTIAL_OUTPUT_ON_ERROR') ? JSON_PARTIAL_OUTPUT_ON_ERROR : 0);
+
+        return Handler::QUIT;
+    }
+
+    /**
+     * @return string
+     */
+    public function contentType()
+    {
+        return 'application/json';
+    }
+}

vendor/filp/whoops/src/Whoops/Handler/PlainTextHandler.php

@@ -0,0 +1,359 @@
+<?php
+/**
+* Whoops - php errors for cool kids
+* @author Filipe Dobreira <http://github.com/filp>
+* Plaintext handler for command line and logs.
+* @author Pierre-Yves Landuré <https://howto.biapy.com/>
+*/
+
+namespace Whoops\Handler;
+
+use InvalidArgumentException;
+use Psr\Log\LoggerInterface;
+use Whoops\Exception\Frame;
+
+/**
+* Handler outputing plaintext error messages. Can be used
+* directly, or will be instantiated automagically by Whoops\Run
+* if passed to Run::pushHandler
+*/
+class PlainTextHandler extends Handler
+{
+    const VAR_DUMP_PREFIX = '   | ';
+
+    /**
+     * @var \Psr\Log\LoggerInterface
+     */
+    protected $logger;
+
+    /**
+     * @var callable
+     */
+    protected $dumper;
+
+    /**
+     * @var bool
+     */
+    private $addTraceToOutput = true;
+
+    /**
+     * @var bool|integer
+     */
+    private $addTraceFunctionArgsToOutput = false;
+
+    /**
+     * @var integer
+     */
+    private $traceFunctionArgsOutputLimit = 1024;
+
+    /**
+     * @var bool
+     */
+    private $addPreviousToOutput = true;
+
+    /**
+     * @var bool
+     */
+    private $loggerOnly = false;
+
+    /**
+     * Constructor.
+     * @throws InvalidArgumentException     If argument is not null or a LoggerInterface
+     * @param  \Psr\Log\LoggerInterface|null $logger
+     */
+    public function __construct($logger = null)
+    {
+        $this->setLogger($logger);
+    }
+
+    /**
+     * Set the output logger interface.
+     * @throws InvalidArgumentException     If argument is not null or a LoggerInterface
+     * @param  \Psr\Log\LoggerInterface|null $logger
+     */
+    public function setLogger($logger = null)
+    {
+        if (! (is_null($logger)
+            || $logger instanceof LoggerInterface)) {
+            throw new InvalidArgumentException(
+                'Argument to ' . __METHOD__ .
+                " must be a valid Logger Interface (aka. Monolog), " .
+                get_class($logger) . ' given.'
+            );
+        }
+
+        $this->logger = $logger;
+    }
+
+    /**
+     * @return \Psr\Log\LoggerInterface|null
+     */
+    public function getLogger()
+    {
+        return $this->logger;
+    }
+
+    /**
+     * Set var dumper callback function.
+     *
+     * @param  callable $dumper
+     * @return static
+     */
+    public function setDumper(callable $dumper)
+    {
+        $this->dumper = $dumper;
+        return $this;
+    }
+
+    /**
+     * Add error trace to output.
+     * @param  bool|null  $addTraceToOutput
+     * @return bool|static
+     */
+    public function addTraceToOutput($addTraceToOutput = null)
+    {
+        if (func_num_args() == 0) {
+            return $this->addTraceToOutput;
+        }
+
+        $this->addTraceToOutput = (bool) $addTraceToOutput;
+        return $this;
+    }
+
+    /**
+     * Add previous exceptions to output.
+     * @param  bool|null $addPreviousToOutput
+     * @return bool|static
+     */
+    public function addPreviousToOutput($addPreviousToOutput = null)
+    {
+        if (func_num_args() == 0) {
+            return $this->addPreviousToOutput;
+        }
+
+        $this->addPreviousToOutput = (bool) $addPreviousToOutput;
+        return $this;
+    }
+
+    /**
+     * Add error trace function arguments to output.
+     * Set to True for all frame args, or integer for the n first frame args.
+     * @param  bool|integer|null $addTraceFunctionArgsToOutput
+     * @return static|bool|integer
+     */
+    public function addTraceFunctionArgsToOutput($addTraceFunctionArgsToOutput = null)
+    {
+        if (func_num_args() == 0) {
+            return $this->addTraceFunctionArgsToOutput;
+        }
+
+        if (! is_integer($addTraceFunctionArgsToOutput)) {
+            $this->addTraceFunctionArgsToOutput = (bool) $addTraceFunctionArgsToOutput;
+        } else {
+            $this->addTraceFunctionArgsToOutput = $addTraceFunctionArgsToOutput;
+        }
+        return $this;
+    }
+
+    /**
+     * Set the size limit in bytes of frame arguments var_dump output.
+     * If the limit is reached, the var_dump output is discarded.
+     * Prevent memory limit errors.
+     * @var integer
+     * @return static
+     */
+    public function setTraceFunctionArgsOutputLimit($traceFunctionArgsOutputLimit)
+    {
+        $this->traceFunctionArgsOutputLimit = (integer) $traceFunctionArgsOutputLimit;
+        return $this;
+    }
+
+    /**
+     * Create plain text response and return it as a string
+     * @return string
+     */
+    public function generateResponse()
+    {
+        $exception = $this->getException();
+        $message = $this->getExceptionOutput($exception);
+
+        if ($this->addPreviousToOutput) {
+            $previous = $exception->getPrevious();
+            while ($previous) {
+                $message .= "\n\nCaused by\n" . $this->getExceptionOutput($previous);
+                $previous = $previous->getPrevious();
+            }
+        }
+
+
+        return $message . $this->getTraceOutput() . "\n";
+    }
+
+    /**
+     * Get the size limit in bytes of frame arguments var_dump output.
+     * If the limit is reached, the var_dump output is discarded.
+     * Prevent memory limit errors.
+     * @return integer
+     */
+    public function getTraceFunctionArgsOutputLimit()
+    {
+        return $this->traceFunctionArgsOutputLimit;
+    }
+
+    /**
+     * Only output to logger.
+     * @param  bool|null $loggerOnly
+     * @return static|bool
+     */
+    public function loggerOnly($loggerOnly = null)
+    {
+        if (func_num_args() == 0) {
+            return $this->loggerOnly;
+        }
+
+        $this->loggerOnly = (bool) $loggerOnly;
+        return $this;
+    }
+
+    /**
+     * Test if handler can output to stdout.
+     * @return bool
+     */
+    private function canOutput()
+    {
+        return !$this->loggerOnly();
+    }
+
+    /**
+     * Get the frame args var_dump.
+     * @param  \Whoops\Exception\Frame $frame [description]
+     * @param  integer                 $line  [description]
+     * @return string
+     */
+    private function getFrameArgsOutput(Frame $frame, $line)
+    {
+        if ($this->addTraceFunctionArgsToOutput() === false
+            || $this->addTraceFunctionArgsToOutput() < $line) {
+            return '';
+        }
+
+        // Dump the arguments:
+        ob_start();
+        $this->dump($frame->getArgs());
+        if (ob_get_length() > $this->getTraceFunctionArgsOutputLimit()) {
+            // The argument var_dump is to big.
+            // Discarded to limit memory usage.
+            ob_clean();
+            return sprintf(
+                "\n%sArguments dump length greater than %d Bytes. Discarded.",
+                self::VAR_DUMP_PREFIX,
+                $this->getTraceFunctionArgsOutputLimit()
+            );
+        }
+
+        return sprintf(
+            "\n%s",
+            preg_replace('/^/m', self::VAR_DUMP_PREFIX, ob_get_clean())
+        );
+    }
+
+    /**
+     * Dump variable.
+     *
+     * @param mixed $var
+     * @return void
+     */
+    protected function dump($var)
+    {
+        if ($this->dumper) {
+            call_user_func($this->dumper, $var);
+        } else {
+            var_dump($var);
+        }
+    }
+
+    /**
+     * Get the exception trace as plain text.
+     * @return string
+     */
+    private function getTraceOutput()
+    {
+        if (! $this->addTraceToOutput()) {
+            return '';
+        }
+        $inspector = $this->getInspector();
+        $frames = $inspector->getFrames($this->getRun()->getFrameFilters());
+
+        $response = "\nStack trace:";
+
+        $line = 1;
+        foreach ($frames as $frame) {
+            /** @var Frame $frame */
+            $class = $frame->getClass();
+
+            $template = "\n%3d. %s->%s() %s:%d%s";
+            if (! $class) {
+                // Remove method arrow (->) from output.
+                $template = "\n%3d. %s%s() %s:%d%s";
+            }
+
+            $response .= sprintf(
+                $template,
+                $line,
+                $class,
+                $frame->getFunction(),
+                $frame->getFile(),
+                $frame->getLine(),
+                $this->getFrameArgsOutput($frame, $line)
+            );
+
+            $line++;
+        }
+
+        return $response;
+    }
+
+    /**
+     * Get the exception as plain text.
+     * @param \Throwable $exception
+     * @return string
+     */
+    private function getExceptionOutput($exception)
+    {
+        return sprintf(
+            "%s: %s in file %s on line %d",
+            get_class($exception),
+            $exception->getMessage(),
+            $exception->getFile(),
+            $exception->getLine()
+        );
+    }
+
+    /**
+     * @return int
+     */
+    public function handle()
+    {
+        $response = $this->generateResponse();
+
+        if ($this->getLogger()) {
+            $this->getLogger()->error($response);
+        }
+
+        if (! $this->canOutput()) {
+            return Handler::DONE;
+        }
+
+        echo $response;
+
+        return Handler::QUIT;
+    }
+
+    /**
+     * @return string
+     */
+    public function contentType()
+    {
+        return 'text/plain';
+    }
+}

vendor/filp/whoops/src/Whoops/Handler/PrettyPageHandler.php

@@ -0,0 +1,832 @@
+<?php
+/**
+ * Whoops - php errors for cool kids
+ * @author Filipe Dobreira <http://github.com/filp>
+ */
+
+namespace Whoops\Handler;
+
+use InvalidArgumentException;
+use RuntimeException;
+use Symfony\Component\VarDumper\Cloner\AbstractCloner;
+use Symfony\Component\VarDumper\Cloner\VarCloner;
+use UnexpectedValueException;
+use Whoops\Exception\Formatter;
+use Whoops\Util\Misc;
+use Whoops\Util\TemplateHelper;
+
+class PrettyPageHandler extends Handler
+{
+    const EDITOR_SUBLIME = "sublime";
+    const EDITOR_TEXTMATE = "textmate";
+    const EDITOR_EMACS = "emacs";
+    const EDITOR_MACVIM = "macvim";
+    const EDITOR_PHPSTORM = "phpstorm";
+    const EDITOR_IDEA = "idea";
+    const EDITOR_VSCODE = "vscode";
+    const EDITOR_ATOM = "atom";
+    const EDITOR_ESPRESSO = "espresso";
+    const EDITOR_XDEBUG = "xdebug";
+    const EDITOR_NETBEANS = "netbeans";
+
+    /**
+     * Search paths to be scanned for resources.
+     *
+     * Stored in the reverse order they're declared.
+     *
+     * @var array
+     */
+    private $searchPaths = [];
+
+    /**
+     * Fast lookup cache for known resource locations.
+     *
+     * @var array
+     */
+    private $resourceCache = [];
+
+    /**
+     * The name of the custom css file.
+     *
+     * @var string|null
+     */
+    private $customCss = null;
+
+    /**
+     * The name of the custom js file.
+     *
+     * @var string|null
+     */
+    private $customJs = null;
+
+    /**
+     * @var array[]
+     */
+    private $extraTables = [];
+
+    /**
+     * @var bool
+     */
+    private $handleUnconditionally = false;
+
+    /**
+     * @var string
+     */
+    private $pageTitle = "Whoops! There was an error.";
+
+    /**
+     * @var array[]
+     */
+    private $applicationPaths;
+
+    /**
+     * @var array[]
+     */
+    private $blacklist = [
+        '_GET' => [],
+        '_POST' => [],
+        '_FILES' => [],
+        '_COOKIE' => [],
+        '_SESSION' => [],
+        '_SERVER' => [],
+        '_ENV' => [],
+    ];
+
+    /**
+     * An identifier for a known IDE/text editor.
+     *
+     * Either a string, or a calalble that resolves a string, that can be used
+     * to open a given file in an editor. If the string contains the special
+     * substrings %file or %line, they will be replaced with the correct data.
+     *
+     * @example
+     *   "txmt://open?url=%file&line=%line"
+     *
+     * @var callable|string $editor
+     */
+    protected $editor;
+
+    /**
+     * A list of known editor strings.
+     *
+     * @var array
+     */
+    protected $editors = [
+        "sublime"  => "subl://open?url=file://%file&line=%line",
+        "textmate" => "txmt://open?url=file://%file&line=%line",
+        "emacs"    => "emacs://open?url=file://%file&line=%line",
+        "macvim"   => "mvim://open/?url=file://%file&line=%line",
+        "phpstorm" => "phpstorm://open?file=%file&line=%line",
+        "idea"     => "idea://open?file=%file&line=%line",
+        "vscode"   => "vscode://file/%file:%line",
+        "atom"     => "atom://core/open/file?filename=%file&line=%line",
+        "espresso" => "x-espresso://open?filepath=%file&lines=%line",
+        "netbeans" => "netbeans://open/?f=%file:%line",
+    ];
+
+    /**
+     * @var TemplateHelper
+     */
+    protected $templateHelper;
+
+    /**
+     * Constructor.
+     *
+     * @return void
+     */
+    public function __construct()
+    {
+        if (ini_get('xdebug.file_link_format') || get_cfg_var('xdebug.file_link_format')) {
+            // Register editor using xdebug's file_link_format option.
+            $this->editors['xdebug'] = function ($file, $line) {
+                return str_replace(['%f', '%l'], [$file, $line], ini_get('xdebug.file_link_format') ?: get_cfg_var('xdebug.file_link_format'));
+            };
+
+            // If xdebug is available, use it as default editor.
+            $this->setEditor('xdebug');
+        }
+
+        // Add the default, local resource search path:
+        $this->searchPaths[] = __DIR__ . "/../Resources";
+
+        // blacklist php provided auth based values
+        $this->blacklist('_SERVER', 'PHP_AUTH_PW');
+
+        $this->templateHelper = new TemplateHelper();
+
+        if (class_exists('Symfony\Component\VarDumper\Cloner\VarCloner')) {
+            $cloner = new VarCloner();
+            // Only dump object internals if a custom caster exists for performance reasons
+            // https://github.com/filp/whoops/pull/404
+            $cloner->addCasters(['*' => function ($obj, $a, $stub, $isNested, $filter = 0) {
+                $class = $stub->class;
+                $classes = [$class => $class] + class_parents($obj) + class_implements($obj);
+
+                foreach ($classes as $class) {
+                    if (isset(AbstractCloner::$defaultCasters[$class])) {
+                        return $a;
+                    }
+                }
+
+                // Remove all internals
+                return [];
+            }]);
+            $this->templateHelper->setCloner($cloner);
+        }
+    }
+
+    /**
+     * @return int|null
+     *
+     * @throws \Exception
+     */
+    public function handle()
+    {
+        if (!$this->handleUnconditionally()) {
+            // Check conditions for outputting HTML:
+            // @todo: Make this more robust
+            if (PHP_SAPI === 'cli') {
+                // Help users who have been relying on an internal test value
+                // fix their code to the proper method
+                if (isset($_ENV['whoops-test'])) {
+                    throw new \Exception(
+                        'Use handleUnconditionally instead of whoops-test'
+                        .' environment variable'
+                    );
+                }
+
+                return Handler::DONE;
+            }
+        }
+
+        $templateFile = $this->getResource("views/layout.html.php");
+        $cssFile      = $this->getResource("css/whoops.base.css");
+        $zeptoFile    = $this->getResource("js/zepto.min.js");
+        $prismJs = $this->getResource("js/prism.js");
+        $prismCss = $this->getResource("css/prism.css");
+        $clipboard    = $this->getResource("js/clipboard.min.js");
+        $jsFile       = $this->getResource("js/whoops.base.js");
+
+        if ($this->customCss) {
+            $customCssFile = $this->getResource($this->customCss);
+        }
+
+        if ($this->customJs) {
+            $customJsFile = $this->getResource($this->customJs);
+        }
+
+        $inspector = $this->getInspector();
+        $frames = $this->getExceptionFrames();
+        $code = $this->getExceptionCode();
+
+        // List of variables that will be passed to the layout template.
+        $vars = [
+            "page_title" => $this->getPageTitle(),
+
+            // @todo: Asset compiler
+            "stylesheet" => file_get_contents($cssFile),
+            "zepto"      => file_get_contents($zeptoFile),
+            "prismJs"   => file_get_contents($prismJs),
+            "prismCss"   => file_get_contents($prismCss),
+            "clipboard"  => file_get_contents($clipboard),
+            "javascript" => file_get_contents($jsFile),
+
+            // Template paths:
+            "header"                     => $this->getResource("views/header.html.php"),
+            "header_outer"               => $this->getResource("views/header_outer.html.php"),
+            "frame_list"                 => $this->getResource("views/frame_list.html.php"),
+            "frames_description"         => $this->getResource("views/frames_description.html.php"),
+            "frames_container"           => $this->getResource("views/frames_container.html.php"),
+            "panel_details"              => $this->getResource("views/panel_details.html.php"),
+            "panel_details_outer"        => $this->getResource("views/panel_details_outer.html.php"),
+            "panel_left"                 => $this->getResource("views/panel_left.html.php"),
+            "panel_left_outer"           => $this->getResource("views/panel_left_outer.html.php"),
+            "frame_code"                 => $this->getResource("views/frame_code.html.php"),
+            "env_details"                => $this->getResource("views/env_details.html.php"),
+
+            "title"            => $this->getPageTitle(),
+            "name"             => explode("\\", $inspector->getExceptionName()),
+            "message"          => $inspector->getExceptionMessage(),
+            "previousMessages" => $inspector->getPreviousExceptionMessages(),
+            "docref_url"       => $inspector->getExceptionDocrefUrl(),
+            "code"             => $code,
+            "previousCodes"    => $inspector->getPreviousExceptionCodes(),
+            "plain_exception"  => Formatter::formatExceptionPlain($inspector),
+            "frames"           => $frames,
+            "has_frames"       => !!count($frames),
+            "handler"          => $this,
+            "handlers"         => $this->getRun()->getHandlers(),
+
+            "active_frames_tab" => count($frames) && $frames->offsetGet(0)->isApplication() ?  'application' : 'all',
+            "has_frames_tabs"   => $this->getApplicationPaths(),
+
+            "tables"      => [
+                "GET Data"              => $this->masked($_GET, '_GET'),
+                "POST Data"             => $this->masked($_POST, '_POST'),
+                "Files"                 => isset($_FILES) ? $this->masked($_FILES, '_FILES') : [],
+                "Cookies"               => $this->masked($_COOKIE, '_COOKIE'),
+                "Session"               => isset($_SESSION) ? $this->masked($_SESSION, '_SESSION') :  [],
+                "Server/Request Data"   => $this->masked($_SERVER, '_SERVER'),
+                "Environment Variables" => $this->masked($_ENV, '_ENV'),
+            ],
+        ];
+
+        if (isset($customCssFile)) {
+            $vars["stylesheet"] .= file_get_contents($customCssFile);
+        }
+
+        if (isset($customJsFile)) {
+            $vars["javascript"] .= file_get_contents($customJsFile);
+        }
+
+        // Add extra entries list of data tables:
+        // @todo: Consolidate addDataTable and addDataTableCallback
+        $extraTables = array_map(function ($table) use ($inspector) {
+            return $table instanceof \Closure ? $table($inspector) : $table;
+        }, $this->getDataTables());
+        $vars["tables"] = array_merge($extraTables, $vars["tables"]);
+
+        $plainTextHandler = new PlainTextHandler();
+        $plainTextHandler->setRun($this->getRun());
+        $plainTextHandler->setException($this->getException());
+        $plainTextHandler->setInspector($this->getInspector());
+        $vars["preface"] = "<!--\n\n\n" .  $this->templateHelper->escape($plainTextHandler->generateResponse()) . "\n\n\n\n\n\n\n\n\n\n\n-->";
+
+        $this->templateHelper->setVariables($vars);
+        $this->templateHelper->render($templateFile);
+
+        return Handler::QUIT;
+    }
+
+    /**
+     * Get the stack trace frames of the exception currently being handled.
+     *
+     * @return \Whoops\Exception\FrameCollection
+     */
+    protected function getExceptionFrames()
+    {
+        $frames = $this->getInspector()->getFrames($this->getRun()->getFrameFilters());
+
+        if ($this->getApplicationPaths()) {
+            foreach ($frames as $frame) {
+                foreach ($this->getApplicationPaths() as $path) {
+                    if (strpos($frame->getFile(), $path) === 0) {
+                        $frame->setApplication(true);
+                        break;
+                    }
+                }
+            }
+        }
+
+        return $frames;
+    }
+
+    /**
+     * Get the code of the exception currently being handled.
+     *
+     * @return string
+     */
+    protected function getExceptionCode()
+    {
+        $exception = $this->getException();
+
+        $code = $exception->getCode();
+        if ($exception instanceof \ErrorException) {
+            // ErrorExceptions wrap the php-error types within the 'severity' property
+            $code = Misc::translateErrorCode($exception->getSeverity());
+        }
+
+        return (string) $code;
+    }
+
+    /**
+     * @return string
+     */
+    public function contentType()
+    {
+        return 'text/html';
+    }
+
+    /**
+     * Adds an entry to the list of tables displayed in the template.
+     *
+     * The expected data is a simple associative array. Any nested arrays
+     * will be flattened with `print_r`.
+     *
+     * @param string $label
+     *
+     * @return static
+     */
+    public function addDataTable($label, array $data)
+    {
+        $this->extraTables[$label] = $data;
+        return $this;
+    }
+
+    /**
+     * Lazily adds an entry to the list of tables displayed in the table.
+     *
+     * The supplied callback argument will be called when the error is
+     * rendered, it should produce a simple associative array. Any nested
+     * arrays will be flattened with `print_r`.
+     *
+     * @param string   $label
+     * @param callable $callback Callable returning an associative array
+     *
+     * @throws InvalidArgumentException If $callback is not callable
+     *
+     * @return static
+     */
+    public function addDataTableCallback($label, /* callable */ $callback)
+    {
+        if (!is_callable($callback)) {
+            throw new InvalidArgumentException('Expecting callback argument to be callable');
+        }
+
+        $this->extraTables[$label] = function (\Whoops\Inspector\InspectorInterface $inspector = null) use ($callback) {
+            try {
+                $result = call_user_func($callback, $inspector);
+
+                // Only return the result if it can be iterated over by foreach().
+                return is_array($result) || $result instanceof \Traversable ? $result : [];
+            } catch (\Exception $e) {
+                // Don't allow failure to break the rendering of the original exception.
+                return [];
+            }
+        };
+
+        return $this;
+    }
+
+    /**
+     * Returns all the extra data tables registered with this handler.
+     *
+     * Optionally accepts a 'label' parameter, to only return the data table
+     * under that label.
+     *
+     * @param string|null $label
+     *
+     * @return array[]|callable
+     */
+    public function getDataTables($label = null)
+    {
+        if ($label !== null) {
+            return isset($this->extraTables[$label]) ?
+                   $this->extraTables[$label] : [];
+        }
+
+        return $this->extraTables;
+    }
+
+    /**
+     * Set whether to handle unconditionally.
+     *
+     * Allows to disable all attempts to dynamically decide whether to handle
+     * or return prematurely. Set this to ensure that the handler will perform,
+     * no matter what.
+     *
+     * @param bool|null $value
+     *
+     * @return bool|static
+     */
+    public function handleUnconditionally($value = null)
+    {
+        if (func_num_args() == 0) {
+            return $this->handleUnconditionally;
+        }
+
+        $this->handleUnconditionally = (bool) $value;
+        return $this;
+    }
+
+    /**
+     * Adds an editor resolver.
+     *
+     * Either a string, or a closure that resolves a string, that can be used
+     * to open a given file in an editor. If the string contains the special
+     * substrings %file or %line, they will be replaced with the correct data.
+     *
+     * @example
+     *  $run->addEditor('macvim', "mvim://open?url=file://%file&line=%line")
+     * @example
+     *   $run->addEditor('remove-it', function($file, $line) {
+     *       unlink($file);
+     *       return "http://stackoverflow.com";
+     *   });
+     *
+     * @param string          $identifier
+     * @param string|callable $resolver
+     *
+     * @return static
+     */
+    public function addEditor($identifier, $resolver)
+    {
+        $this->editors[$identifier] = $resolver;
+        return $this;
+    }
+
+    /**
+     * Set the editor to use to open referenced files.
+     *
+     * Pass either the name of a configured editor, or a closure that directly
+     * resolves an editor string.
+     *
+     * @example
+     *   $run->setEditor(function($file, $line) { return "file:///{$file}"; });
+     * @example
+     *   $run->setEditor('sublime');
+     *
+     * @param string|callable $editor
+     *
+     * @throws InvalidArgumentException If invalid argument identifier provided
+     *
+     * @return static
+     */
+    public function setEditor($editor)
+    {
+        if (!is_callable($editor) && !isset($this->editors[$editor])) {
+            throw new InvalidArgumentException(
+                "Unknown editor identifier: $editor. Known editors:" .
+                implode(",", array_keys($this->editors))
+            );
+        }
+
+        $this->editor = $editor;
+        return $this;
+    }
+
+    /**
+     * Get the editor href for a given file and line, if available.
+     *
+     * @param string $filePath
+     * @param int    $line
+     *
+     * @throws InvalidArgumentException If editor resolver does not return a string
+     *
+     * @return string|bool
+     */
+    public function getEditorHref($filePath, $line)
+    {
+        $editor = $this->getEditor($filePath, $line);
+
+        if (empty($editor)) {
+            return false;
+        }
+
+        // Check that the editor is a string, and replace the
+        // %line and %file placeholders:
+        if (!isset($editor['url']) || !is_string($editor['url'])) {
+            throw new UnexpectedValueException(
+                __METHOD__ . " should always resolve to a string or a valid editor array; got something else instead."
+            );
+        }
+
+        $editor['url'] = str_replace("%line", rawurlencode($line), $editor['url']);
+        $editor['url'] = str_replace("%file", rawurlencode($filePath), $editor['url']);
+
+        return $editor['url'];
+    }
+
+    /**
+     * Determine if the editor link should act as an Ajax request.
+     *
+     * @param string $filePath
+     * @param int    $line
+     *
+     * @throws UnexpectedValueException If editor resolver does not return a boolean
+     *
+     * @return bool
+     */
+    public function getEditorAjax($filePath, $line)
+    {
+        $editor = $this->getEditor($filePath, $line);
+
+        // Check that the ajax is a bool
+        if (!isset($editor['ajax']) || !is_bool($editor['ajax'])) {
+            throw new UnexpectedValueException(
+                __METHOD__ . " should always resolve to a bool; got something else instead."
+            );
+        }
+        return $editor['ajax'];
+    }
+
+    /**
+     * Determines both the editor and if ajax should be used.
+     *
+     * @param string $filePath
+     * @param int    $line
+     *
+     * @return array
+     */
+    protected function getEditor($filePath, $line)
+    {
+        if (!$this->editor || (!is_string($this->editor) && !is_callable($this->editor))) {
+            return [];
+        }
+
+        if (is_string($this->editor) && isset($this->editors[$this->editor]) && !is_callable($this->editors[$this->editor])) {
+            return [
+                'ajax' => false,
+                'url' => $this->editors[$this->editor],
+            ];
+        }
+
+        if (is_callable($this->editor) || (isset($this->editors[$this->editor]) && is_callable($this->editors[$this->editor]))) {
+            if (is_callable($this->editor)) {
+                $callback = call_user_func($this->editor, $filePath, $line);
+            } else {
+                $callback = call_user_func($this->editors[$this->editor], $filePath, $line);
+            }
+
+            if (empty($callback)) {
+                return [];
+            }
+
+            if (is_string($callback)) {
+                return [
+                    'ajax' => false,
+                    'url' => $callback,
+                ];
+            }
+
+            return [
+                'ajax' => isset($callback['ajax']) ? $callback['ajax'] : false,
+                'url' => isset($callback['url']) ? $callback['url'] : $callback,
+            ];
+        }
+
+        return [];
+    }
+
+    /**
+     * Set the page title.
+     *
+     * @param string $title
+     *
+     * @return static
+     */
+    public function setPageTitle($title)
+    {
+        $this->pageTitle = (string) $title;
+        return $this;
+    }
+
+    /**
+     * Get the page title.
+     *
+     * @return string
+     */
+    public function getPageTitle()
+    {
+        return $this->pageTitle;
+    }
+
+    /**
+     * Adds a path to the list of paths to be searched for resources.
+     *
+     * @param string $path
+     *
+     * @throws InvalidArgumentException If $path is not a valid directory
+     *
+     * @return static
+     */
+    public function addResourcePath($path)
+    {
+        if (!is_dir($path)) {
+            throw new InvalidArgumentException(
+                "'$path' is not a valid directory"
+            );
+        }
+
+        array_unshift($this->searchPaths, $path);
+        return $this;
+    }
+
+    /**
+     * Adds a custom css file to be loaded.
+     *
+     * @param string|null $name
+     *
+     * @return static
+     */
+    public function addCustomCss($name)
+    {
+        $this->customCss = $name;
+        return $this;
+    }
+
+    /**
+     * Adds a custom js file to be loaded.
+     *
+     * @param string|null $name
+     *
+     * @return static
+     */
+    public function addCustomJs($name)
+    {
+        $this->customJs = $name;
+        return $this;
+    }
+
+    /**
+     * @return array
+     */
+    public function getResourcePaths()
+    {
+        return $this->searchPaths;
+    }
+
+    /**
+     * Finds a resource, by its relative path, in all available search paths.
+     *
+     * The search is performed starting at the last search path, and all the
+     * way back to the first, enabling a cascading-type system of overrides for
+     * all resources.
+     *
+     * @param string $resource
+     *
+     * @throws RuntimeException If resource cannot be found in any of the available paths
+     *
+     * @return string
+     */
+    protected function getResource($resource)
+    {
+        // If the resource was found before, we can speed things up
+        // by caching its absolute, resolved path:
+        if (isset($this->resourceCache[$resource])) {
+            return $this->resourceCache[$resource];
+        }
+
+        // Search through available search paths, until we find the
+        // resource we're after:
+        foreach ($this->searchPaths as $path) {
+            $fullPath = $path . "/$resource";
+
+            if (is_file($fullPath)) {
+                // Cache the result:
+                $this->resourceCache[$resource] = $fullPath;
+                return $fullPath;
+            }
+        }
+
+        // If we got this far, nothing was found.
+        throw new RuntimeException(
+            "Could not find resource '$resource' in any resource paths."
+            . "(searched: " . join(", ", $this->searchPaths). ")"
+        );
+    }
+
+    /**
+     * @deprecated
+     *
+     * @return string
+     */
+    public function getResourcesPath()
+    {
+        $allPaths = $this->getResourcePaths();
+
+        // Compat: return only the first path added
+        return end($allPaths) ?: null;
+    }
+
+    /**
+     * @deprecated
+     *
+     * @param string $resourcesPath
+     *
+     * @return static
+     */
+    public function setResourcesPath($resourcesPath)
+    {
+        $this->addResourcePath($resourcesPath);
+        return $this;
+    }
+
+    /**
+     * Return the application paths.
+     *
+     * @return array
+     */
+    public function getApplicationPaths()
+    {
+        return $this->applicationPaths;
+    }
+
+    /**
+     * Set the application paths.
+     *
+     * @return void
+     */
+    public function setApplicationPaths(array $applicationPaths)
+    {
+        $this->applicationPaths = $applicationPaths;
+    }
+
+    /**
+     * Set the application root path.
+     *
+     * @param string $applicationRootPath
+     *
+     * @return void
+     */
+    public function setApplicationRootPath($applicationRootPath)
+    {
+        $this->templateHelper->setApplicationRootPath($applicationRootPath);
+    }
+
+    /**
+     * blacklist a sensitive value within one of the superglobal arrays.
+     * Alias for the hideSuperglobalKey method.
+     *
+     * @param string $superGlobalName The name of the superglobal array, e.g. '_GET'
+     * @param string $key             The key within the superglobal
+     * @see hideSuperglobalKey
+     *
+     * @return static
+     */
+    public function blacklist($superGlobalName, $key)
+    {
+        $this->blacklist[$superGlobalName][] = $key;
+        return $this;
+    }
+
+    /**
+     * Hide a sensitive value within one of the superglobal arrays.
+     *
+     * @param string $superGlobalName The name of the superglobal array, e.g. '_GET'
+     * @param string $key             The key within the superglobal
+     * @return static
+     */
+    public function hideSuperglobalKey($superGlobalName, $key)
+    {
+        return $this->blacklist($superGlobalName, $key);
+    }
+
+    /**
+     * Checks all values within the given superGlobal array.
+     *
+     * Blacklisted values will be replaced by a equal length string containing
+     * only '*' characters for string values.
+     * Non-string values will be replaced with a fixed asterisk count.
+     * We intentionally dont rely on $GLOBALS as it depends on the 'auto_globals_jit' php.ini setting.
+     *
+     * @param array|\ArrayAccess  $superGlobal     One of the superglobal arrays
+     * @param string $superGlobalName The name of the superglobal array, e.g. '_GET'
+     *
+     * @return array $values without sensitive data
+     */
+    private function masked($superGlobal, $superGlobalName)
+    {
+        $blacklisted = $this->blacklist[$superGlobalName];
+
+        $values = $superGlobal;
+
+        foreach ($blacklisted as $key) {
+            if (isset($superGlobal[$key])) {
+                $values[$key] = str_repeat('*', is_string($superGlobal[$key]) ? strlen($superGlobal[$key]) : 3);
+            }
+        }
+
+        return $values;
+    }
+}

vendor/filp/whoops/src/Whoops/Handler/XmlResponseHandler.php

@@ -0,0 +1,108 @@
+<?php
+/**
+ * Whoops - php errors for cool kids
+ * @author Filipe Dobreira <http://github.com/filp>
+ */
+
+namespace Whoops\Handler;
+
+use SimpleXMLElement;
+use Whoops\Exception\Formatter;
+
+/**
+ * Catches an exception and converts it to an XML
+ * response. Additionally can also return exception
+ * frames for consumption by an API.
+ */
+class XmlResponseHandler extends Handler
+{
+    /**
+     * @var bool
+     */
+    private $returnFrames = false;
+
+    /**
+     * @param  bool|null  $returnFrames
+     * @return bool|static
+     */
+    public function addTraceToOutput($returnFrames = null)
+    {
+        if (func_num_args() == 0) {
+            return $this->returnFrames;
+        }
+
+        $this->returnFrames = (bool) $returnFrames;
+        return $this;
+    }
+
+    /**
+     * @return int
+     */
+    public function handle()
+    {
+        $response = [
+            'error' => Formatter::formatExceptionAsDataArray(
+                $this->getInspector(),
+                $this->addTraceToOutput(),
+                $this->getRun()->getFrameFilters()
+            ),
+        ];
+
+        echo self::toXml($response);
+
+        return Handler::QUIT;
+    }
+
+    /**
+     * @return string
+     */
+    public function contentType()
+    {
+        return 'application/xml';
+    }
+
+    /**
+     * @param  SimpleXMLElement  $node Node to append data to, will be modified in place
+     * @param  array|\Traversable $data
+     * @return SimpleXMLElement  The modified node, for chaining
+     */
+    private static function addDataToNode(\SimpleXMLElement $node, $data)
+    {
+        assert(is_array($data) || $data instanceof Traversable);
+
+        foreach ($data as $key => $value) {
+            if (is_numeric($key)) {
+                // Convert the key to a valid string
+                $key = "unknownNode_". (string) $key;
+            }
+
+            // Delete any char not allowed in XML element names
+            $key = preg_replace('/[^a-z0-9\-\_\.\:]/i', '', $key);
+
+            if (is_array($value)) {
+                $child = $node->addChild($key);
+                self::addDataToNode($child, $value);
+            } else {
+                $value = str_replace('&', '&amp;', print_r($value, true));
+                $node->addChild($key, $value);
+            }
+        }
+
+        return $node;
+    }
+
+    /**
+     * The main function for converting to an XML document.
+     *
+     * @param  array|\Traversable $data
+     * @return string            XML
+     */
+    private static function toXml($data)
+    {
+        assert(is_array($data) || $data instanceof Traversable);
+
+        $node = simplexml_load_string("<?xml version='1.0' encoding='utf-8'?><root />");
+
+        return self::addDataToNode($node, $data)->asXML();
+    }
+}

vendor/filp/whoops/src/Whoops/Inspector/InspectorFactory.php

@@ -0,0 +1,21 @@
+<?php
+/**
+ * Whoops - php errors for cool kids
+ * @author Filipe Dobreira <http://github.com/filp>
+ */
+
+namespace Whoops\Inspector;
+
+use Whoops\Exception\Inspector;
+
+class InspectorFactory implements InspectorFactoryInterface
+{
+    /**
+     * @param \Throwable $exception
+     * @return InspectorInterface
+     */
+    public function create($exception)
+    {
+        return new Inspector($exception, $this);
+    }
+}

vendor/filp/whoops/src/Whoops/Inspector/InspectorFactoryInterface.php

@@ -0,0 +1,16 @@
+<?php
+/**
+ * Whoops - php errors for cool kids
+ * @author Filipe Dobreira <http://github.com/filp>
+ */
+
+namespace Whoops\Inspector;
+
+interface InspectorFactoryInterface
+{
+    /**
+     * @param \Throwable $exception
+     * @return InspectorInterface
+     */
+    public function create($exception);
+}

vendor/filp/whoops/src/Whoops/Inspector/InspectorInterface.php

@@ -0,0 +1,71 @@
+<?php
+/**
+ * Whoops - php errors for cool kids
+ * @author Filipe Dobreira <http://github.com/filp>
+ */
+
+namespace Whoops\Inspector;
+
+interface InspectorInterface
+{
+    /**
+     * @return \Throwable
+     */
+    public function getException();
+
+    /**
+     * @return string
+     */
+    public function getExceptionName();
+
+    /**
+     * @return string
+     */
+    public function getExceptionMessage();
+
+    /**
+     * @return string[]
+     */
+    public function getPreviousExceptionMessages();
+
+    /**
+     * @return int[]
+     */
+    public function getPreviousExceptionCodes();
+
+    /**
+     * Returns a url to the php-manual related to the underlying error - when available.
+     *
+     * @return string|null
+     */
+    public function getExceptionDocrefUrl();
+
+    /**
+     * Does the wrapped Exception has a previous Exception?
+     * @return bool
+     */
+    public function hasPreviousException();
+
+    /**
+     * Returns an Inspector for a previous Exception, if any.
+     * @todo   Clean this up a bit, cache stuff a bit better.
+     * @return InspectorInterface
+     */
+    public function getPreviousExceptionInspector();
+
+    /**
+     * Returns an array of all previous exceptions for this inspector's exception
+     * @return \Throwable[]
+     */
+    public function getPreviousExceptions();
+
+    /**
+     * Returns an iterator for the inspected exception's
+     * frames.
+     * 
+     * @param array<callable> $frameFilters
+     * 
+     * @return \Whoops\Exception\FrameCollection
+     */
+    public function getFrames(array $frameFilters = []);
+}

vendor/filp/whoops/src/Whoops/Resources/css/prism.css

@@ -0,0 +1,5 @@
+/* PrismJS 1.29.0
+https://prismjs.com/download.html#themes=prism-tomorrow&languages=markup+markup-templating+php&plugins=line-highlight+line-numbers */
+code[class*=language-],pre[class*=language-]{color:#ccc;background:0 0;font-family:Consolas,Monaco,'Andale Mono','Ubuntu Mono',monospace;font-size:1em;text-align:left;white-space:pre;word-spacing:normal;word-break:normal;word-wrap:normal;line-height:1.5;-moz-tab-size:4;-o-tab-size:4;tab-size:4;-webkit-hyphens:none;-moz-hyphens:none;-ms-hyphens:none;hyphens:none}pre[class*=language-]{padding:1em;margin:.5em 0;overflow:auto}:not(pre)>code[class*=language-],pre[class*=language-]{background:#2d2d2d}:not(pre)>code[class*=language-]{padding:.1em;border-radius:.3em;white-space:normal}.token.block-comment,.token.cdata,.token.comment,.token.doctype,.token.prolog{color:#999}.token.punctuation{color:#ccc}.token.attr-name,.token.deleted,.token.namespace,.token.tag{color:#e2777a}.token.function-name{color:#6196cc}.token.boolean,.token.function,.token.number{color:#f08d49}.token.class-name,.token.constant,.token.property,.token.symbol{color:#f8c555}.token.atrule,.token.builtin,.token.important,.token.keyword,.token.selector{color:#cc99cd}.token.attr-value,.token.char,.token.regex,.token.string,.token.variable{color:#7ec699}.token.entity,.token.operator,.token.url{color:#67cdcc}.token.bold,.token.important{font-weight:700}.token.italic{font-style:italic}.token.entity{cursor:help}.token.inserted{color:green}
+pre[data-line]{position:relative;padding:1em 0 1em 3em}.line-highlight{position:absolute;left:0;right:0;padding:inherit 0;margin-top:1em;background:hsla(24,20%,50%,.08);background:linear-gradient(to right,hsla(24,20%,50%,.1) 70%,hsla(24,20%,50%,0));pointer-events:none;line-height:inherit;white-space:pre}@media print{.line-highlight{-webkit-print-color-adjust:exact;color-adjust:exact}}.line-highlight:before,.line-highlight[data-end]:after{content:attr(data-start);position:absolute;top:.4em;left:.6em;min-width:1em;padding:0 .5em;background-color:hsla(24,20%,50%,.4);color:#f4f1ef;font:bold 65%/1.5 sans-serif;text-align:center;vertical-align:.3em;border-radius:999px;text-shadow:none;box-shadow:0 1px #fff}.line-highlight[data-end]:after{content:attr(data-end);top:auto;bottom:.4em}.line-numbers .line-highlight:after,.line-numbers .line-highlight:before{content:none}pre[id].linkable-line-numbers span.line-numbers-rows{pointer-events:all}pre[id].linkable-line-numbers span.line-numbers-rows>span:before{cursor:pointer}pre[id].linkable-line-numbers span.line-numbers-rows>span:hover:before{background-color:rgba(128,128,128,.2)}
+pre[class*=language-].line-numbers{position:relative;padding-left:3.8em;counter-reset:linenumber}pre[class*=language-].line-numbers>code{position:relative;white-space:inherit}.line-numbers .line-numbers-rows{position:absolute;pointer-events:none;top:0;font-size:100%;left:-3.8em;width:3em;letter-spacing:-1px;border-right:1px solid #999;-webkit-user-select:none;-moz-user-select:none;-ms-user-select:none;user-select:none}.line-numbers-rows>span{display:block;counter-increment:linenumber}.line-numbers-rows>span:before{content:counter(linenumber);color:#999;display:block;padding-right:.8em;text-align:right}

vendor/filp/whoops/src/Whoops/Resources/css/whoops.base.css

@@ -0,0 +1,560 @@
+body {
+  font: 12px "Helvetica Neue", helvetica, arial, sans-serif;
+  color: #131313;
+  background: #eeeeee;
+  padding:0;
+  margin: 0;
+  max-height: 100%;
+
+  text-rendering: optimizeLegibility;
+}
+  a {
+    text-decoration: none;
+  }
+
+.Whoops.container {
+    position: relative;
+    z-index: 9999999999;
+}
+
+.panel {
+    overflow-y: scroll;
+    height: 100%;
+    position: fixed;
+    margin: 0;
+    left: 0;
+    top: 0;
+}
+
+.branding {
+  position: absolute;
+  top: 10px;
+  right: 20px;
+  color: #777777;
+  font-size: 10px;
+    z-index: 100;
+}
+  .branding a {
+    color: #e95353;
+  }
+
+header {
+  color: white;
+  box-sizing: border-box;
+  background-color: #2a2a2a;
+  padding: 35px 40px;
+  max-height: 180px;
+  overflow: hidden;
+  transition: 0.5s;
+}
+
+  header.header-expand {
+    max-height: 1000px;
+  }
+
+  .exc-title {
+    margin: 0;
+    color: #bebebe;
+    font-size: 14px;
+  }
+    .exc-title-primary, .exc-title-secondary {
+      color: #e95353;
+    }
+
+    .exc-message {
+      font-size: 20px;
+      word-wrap: break-word;
+      margin: 4px 0 0 0;
+      color: white;
+    }
+      .exc-message span {
+        display: block;
+      }
+      .exc-message-empty-notice {
+        color: #a29d9d;
+        font-weight: 300;
+      }
+
+.prev-exc-title {
+  margin: 10px 0;
+}
+
+.prev-exc-title + ul {
+  margin: 0;
+  padding: 0 0 0 20px;
+  line-height: 12px;
+}
+
+.prev-exc-title + ul li {
+  font: 12px "Helvetica Neue", helvetica, arial, sans-serif;
+}
+
+.prev-exc-title + ul li .prev-exc-code {
+  display: inline-block;
+  color: #bebebe;
+}
+
+.details-container {
+  left: 30%;
+  width: 70%;
+  background: #fafafa;
+}
+  .details {
+    padding: 5px;
+  }
+
+    .details-heading {
+      color: #4288CE;
+      font-weight: 300;
+      padding-bottom: 10px;
+      margin-bottom: 10px;
+      border-bottom: 1px solid rgba(0, 0, 0, .1);
+    }
+
+    .details pre.sf-dump {
+      white-space: pre;
+      word-wrap: inherit;
+    }
+
+    .details pre.sf-dump,
+    .details pre.sf-dump .sf-dump-num,
+    .details pre.sf-dump .sf-dump-const,
+    .details pre.sf-dump .sf-dump-str,
+    .details pre.sf-dump .sf-dump-note,
+    .details pre.sf-dump .sf-dump-ref,
+    .details pre.sf-dump .sf-dump-public,
+    .details pre.sf-dump .sf-dump-protected,
+    .details pre.sf-dump .sf-dump-private,
+    .details pre.sf-dump .sf-dump-meta,
+    .details pre.sf-dump .sf-dump-key,
+    .details pre.sf-dump .sf-dump-index {
+      color: #463C54;
+    }
+
+.left-panel {
+  width: 30%;
+  background: #ded8d8;
+}
+
+  .frames-description {
+    background: rgba(0, 0, 0, .05);
+    padding: 8px 15px;
+    color: #a29d9d;
+    font-size: 11px;
+  }
+
+  .frames-description.frames-description-application {
+    text-align: center;
+    font-size: 12px;
+  }
+  .frames-container.frames-container-application .frame:not(.frame-application) {
+    display: none;
+  }
+
+  .frames-tab {
+    color: #a29d9d;
+    display: inline-block;
+    padding: 4px 8px;
+    margin: 0 2px;
+    border-radius: 3px;
+  }
+
+  .frames-tab.frames-tab-active {
+    background-color: #2a2a2a;
+    color: #bebebe;
+  }
+
+  .frame {
+    padding: 14px;
+    cursor: pointer;
+    transition: all 0.1s ease;
+    background: #eeeeee;
+  }
+    .frame:not(:last-child) {
+      border-bottom: 1px solid rgba(0, 0, 0, .05);
+    }
+
+    .frame.active {
+      box-shadow: inset -5px 0 0 0 #4288CE;
+      color: #4288CE;
+    }
+
+    .frame:not(.active):hover {
+      background: #BEE9EA;
+    }
+
+    .frame-method-info {
+      margin-bottom: 10px;
+    }
+
+    .frame-class, .frame-function, .frame-index {
+      font-size: 14px;
+    }
+
+    .frame-index {
+      float: left;
+    }
+
+    .frame-method-info {
+      margin-left: 24px;
+    }
+
+    .frame-index {
+      font-size: 11px;
+      color: #a29d9d;
+      background-color: rgba(0, 0, 0, .05);
+      height: 18px;
+      width: 18px;
+      line-height: 18px;
+      border-radius: 5px;
+      padding: 0 1px 0 1px;
+      text-align: center;
+      display: inline-block;
+    }
+
+    .frame-application .frame-index {
+      background-color: #2a2a2a;
+      color: #bebebe;
+    }
+
+    .frame-file {
+      font-family: "Inconsolata", "Fira Mono", "Source Code Pro", Monaco, Consolas, "Lucida Console", monospace;
+      color: #a29d9d;
+    }
+
+      .frame-file .editor-link {
+        color: #a29d9d;
+      }
+
+    .frame-line {
+      font-weight: bold;
+    }
+
+    .frame-line:before {
+      content: ":";
+    }
+
+    .frame-code {
+      padding: 5px;
+      background: #303030;
+      display: none;
+    }
+
+    .frame-code.active {
+      display: block;
+    }
+
+    .frame-code .frame-file {
+      color: #a29d9d;
+      padding: 12px 6px;
+
+      border-bottom: none;
+    }
+
+    .code-block {
+      padding: 10px;
+      margin: 0;
+      border-radius: 6px;
+      box-shadow: 0 3px 0 rgba(0, 0, 0, .05),
+                  0 10px 30px rgba(0, 0, 0, .05),
+                  inset 0 0 1px 0 rgba(255, 255, 255, .07);
+      -moz-tab-size: 4;
+      -o-tab-size: 4;
+      tab-size: 4;
+    }
+
+    .linenums {
+      margin: 0;
+      margin-left: 10px;
+    }
+
+    .frame-comments {
+      border-top: none;
+      margin-top: 15px;
+
+      font-size: 12px;
+    }
+
+    .frame-comments.empty {
+    }
+
+    .frame-comments.empty:before {
+      content: "No comments for this stack frame.";
+      font-weight: 300;
+      color: #a29d9d;
+    }
+
+    .frame-comment {
+      padding: 10px;
+      color: #e3e3e3;
+      border-radius: 6px;
+      background-color: rgba(255, 255, 255, .05);
+    }
+
+    .frame-comment a {
+      font-weight: bold;
+      text-decoration: underline;
+      color: #c6c6c6;
+    }
+
+    .frame-comment:not(:last-child) {
+      border-bottom: 1px dotted rgba(0, 0, 0, .3);
+    }
+
+    .frame-comment-context {
+      font-size: 10px;
+      color: white;
+    }
+
+.delimiter {
+  display: inline-block;
+}
+
+.data-table-container label {
+  font-size: 16px;
+  color: #303030;
+  font-weight: bold;
+  margin: 10px 0;
+
+  display: block;
+
+  margin-bottom: 5px;
+  padding-bottom: 5px;
+}
+  .data-table {
+    width: 100%;
+    margin-bottom: 10px;
+  }
+
+  .data-table tbody {
+    font: 13px "Inconsolata", "Fira Mono", "Source Code Pro", Monaco, Consolas, "Lucida Console", monospace;
+  }
+
+  .data-table thead {
+    display: none;
+  }
+
+  .data-table tr {
+    padding: 5px 0;
+  }
+
+  .data-table td:first-child {
+    width: 20%;
+    min-width: 130px;
+    overflow: hidden;
+    font-weight: bold;
+    color: #463C54;
+    padding-right: 5px;
+
+  }
+
+  .data-table td:last-child {
+    width: 80%;
+    -ms-word-break: break-all;
+    word-break: break-all;
+    word-break: break-word;
+    -webkit-hyphens: auto;
+    -moz-hyphens: auto;
+    hyphens: auto;
+  }
+
+  .data-table span.empty {
+    color: rgba(0, 0, 0, .3);
+    font-weight: 300;
+  }
+  .data-table label.empty {
+    display: inline;
+  }
+
+.handler {
+  padding: 4px 0;
+  font: 14px "Inconsolata", "Fira Mono", "Source Code Pro", Monaco, Consolas, "Lucida Console", monospace;
+}
+
+#plain-exception {
+  display: none;
+}
+
+.rightButton {
+  cursor: pointer;
+  border: 0;
+  opacity: .8;
+  background: none;
+
+  color: rgba(255, 255, 255, 0.1);
+  box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.1);
+
+  border-radius: 3px;
+
+  outline: none !important;
+}
+
+  .rightButton:hover {
+    box-shadow: inset 0 0 0 2px rgba(255, 255, 255, 0.3);
+    color: rgba(255, 255, 255, 0.3);
+  }
+
+/* inspired by githubs kbd styles */
+kbd {
+  -moz-border-bottom-colors: none;
+  -moz-border-left-colors: none;
+  -moz-border-right-colors: none;
+  -moz-border-top-colors: none;
+  background-color: #fcfcfc;
+  border-color: #ccc #ccc #bbb;
+  border-image: none;
+  border-style: solid;
+  border-width: 1px;
+  color: #555;
+  display: inline-block;
+  font-size: 11px;
+  line-height: 10px;
+  padding: 3px 5px;
+  vertical-align: middle;
+}
+
+
+/* == Media queries */
+
+/* Expand the spacing in the details section */
+@media (min-width: 1000px) {
+  .details, .frame-code {
+    padding: 20px 40px;
+  }
+
+  .details-container {
+    left: 32%;
+    width: 68%;
+  }
+
+  .frames-container {
+    margin: 5px;
+  }
+
+  .left-panel {
+    width: 32%;
+  }
+}
+
+/* Stack panels */
+@media (max-width: 600px) {
+  .panel {
+    position: static;
+    width: 100%;
+  }
+}
+
+/* Stack details tables */
+@media (max-width: 400px) {
+  .data-table,
+  .data-table tbody,
+  .data-table tbody tr,
+  .data-table tbody td {
+    display: block;
+    width: 100%;
+  }
+
+    .data-table tbody tr:first-child {
+      padding-top: 0;
+    }
+
+      .data-table tbody td:first-child,
+      .data-table tbody td:last-child {
+        padding-left: 0;
+        padding-right: 0;
+      }
+
+      .data-table tbody td:last-child {
+        padding-top: 3px;
+      }
+}
+
+.tooltipped {
+  position: relative
+}
+.tooltipped:after {
+  position: absolute;
+  z-index: 1000000;
+  display: none;
+  padding: 5px 8px;
+  color: #fff;
+  text-align: center;
+  text-decoration: none;
+  text-shadow: none;
+  text-transform: none;
+  letter-spacing: normal;
+  word-wrap: break-word;
+  white-space: pre;
+  pointer-events: none;
+  content: attr(aria-label);
+  background: rgba(0, 0, 0, 0.8);
+  border-radius: 3px;
+  -webkit-font-smoothing: subpixel-antialiased
+}
+.tooltipped:before {
+  position: absolute;
+  z-index: 1000001;
+  display: none;
+  width: 0;
+  height: 0;
+  color: rgba(0, 0, 0, 0.8);
+  pointer-events: none;
+  content: "";
+  border: 5px solid transparent
+}
+.tooltipped:hover:before,
+.tooltipped:hover:after,
+.tooltipped:active:before,
+.tooltipped:active:after,
+.tooltipped:focus:before,
+.tooltipped:focus:after {
+  display: inline-block;
+  text-decoration: none
+}
+.tooltipped-s:after {
+  top: 100%;
+  right: 50%;
+  margin-top: 5px
+}
+.tooltipped-s:before {
+  top: auto;
+  right: 50%;
+  bottom: -5px;
+  margin-right: -5px;
+  border-bottom-color: rgba(0, 0, 0, 0.8)
+}
+
+pre.sf-dump {
+  padding: 0px !important;
+  margin: 0px !important;
+}
+
+.search-for-help {
+  width: 85%;
+  padding: 0;
+  margin: 10px 0;
+  list-style-type: none;
+  display: inline-block;
+}
+  .search-for-help li {
+    display: inline-block;
+    margin-right: 5px;
+  }
+  .search-for-help li:last-child {
+    margin-right: 0;
+  }
+    .search-for-help li a {
+
+    }
+      .search-for-help li a i {
+        width: 16px;
+        height: 16px;
+        overflow: hidden;
+        display: block;
+      }
+      .search-for-help li a svg {
+        fill: #fff;
+      }
+      .search-for-help li a svg path {
+        background-size: contain;
+      }

vendor/filp/whoops/src/Whoops/Resources/js/whoops.base.js

@@ -0,0 +1,188 @@
+Zepto(function($) {
+  var $leftPanel      = $('.left-panel');
+  var $frameContainer = $('.frames-container');
+  var $appFramesTab   = $('#application-frames-tab');
+  var $allFramesTab   = $('#all-frames-tab');
+  var $container      = $('.details-container');
+  var $activeLine     = $frameContainer.find('.frame.active');
+  var $activeFrame    = $container.find('.frame-code.active');
+  var $ajaxEditors    = $('.editor-link[data-ajax]');
+  var $header         = $('header');
+
+  $header.on('mouseenter', function () {
+    if ($header.find('.exception').height() >= 145) {
+      $header.addClass('header-expand');
+    }
+  });
+  $header.on('mouseleave', function () {
+    $header.removeClass('header-expand');
+  });
+
+  /*
+   * add prettyprint classes to our current active codeblock
+   * run prettyPrint() to highlight the active code
+   * scroll to the line when prettyprint is done
+   * highlight the current line
+   */
+  var renderCurrentCodeblock = function(id) {
+    Prism.highlightAllUnder(document.querySelector('.frame-code-container .frame-code.active'));
+    highlightCurrentLine();
+  }
+
+  /*
+   * Highlight the active and neighboring lines for the current frame
+   * Adjust the offset to make sure that line is veritcally centered
+   */
+
+  var highlightCurrentLine = function() {
+    // We show more code than needed, purely for proper syntax highlighting
+    // Let’s hide a big chunk of that code and then scroll the remaining block
+    $activeFrame.find('.code-block').first().css({
+      maxHeight: 345,
+      overflow: 'hidden',
+    });
+
+    var line = $activeFrame.find('.code-block .line-highlight').first()[0];
+    line.scrollIntoView();
+    line.parentElement.scrollTop -= 180;
+
+    $container.scrollTop(0);
+  }
+
+  /*
+   * click handler for loading codeblocks
+   */
+
+  $frameContainer.on('click', '.frame', function() {
+
+    var $this  = $(this);
+    var id     = /frame\-line\-([\d]*)/.exec($this.attr('id'))[1];
+    var $codeFrame = $('#frame-code-' + id);
+
+    if ($codeFrame) {
+
+      $activeLine.removeClass('active');
+      $activeFrame.removeClass('active');
+
+      $this.addClass('active');
+      $codeFrame.addClass('active');
+
+      $activeLine  = $this;
+      $activeFrame = $codeFrame;
+
+      renderCurrentCodeblock(id);
+
+    }
+
+  });
+
+  var clipboard = new Clipboard('.clipboard');
+  var showTooltip = function(elem, msg) {
+    elem.classList.add('tooltipped', 'tooltipped-s');
+    elem.setAttribute('aria-label', msg);
+  };
+
+  clipboard.on('success', function(e) {
+      e.clearSelection();
+
+      showTooltip(e.trigger, 'Copied!');
+  });
+
+  clipboard.on('error', function(e) {
+      showTooltip(e.trigger, fallbackMessage(e.action));
+  });
+
+  var btn = document.querySelector('.clipboard');
+
+  btn.addEventListener('mouseleave', function(e) {
+    e.currentTarget.classList.remove('tooltipped', 'tooltipped-s');
+    e.currentTarget.removeAttribute('aria-label');
+  });
+
+  function fallbackMessage(action) {
+    var actionMsg = '';
+    var actionKey = (action === 'cut' ? 'X' : 'C');
+
+    if (/Mac/i.test(navigator.userAgent)) {
+        actionMsg = 'Press ⌘-' + actionKey + ' to ' + action;
+    } else {
+        actionMsg = 'Press Ctrl-' + actionKey + ' to ' + action;
+    }
+
+    return actionMsg;
+  }
+
+  function scrollIntoView($node, $parent) {
+    var nodeOffset = $node.offset();
+    var nodeTop = nodeOffset.top;
+    var nodeBottom = nodeTop + nodeOffset.height;
+    var parentScrollTop = $parent.scrollTop();
+    var parentHeight = $parent.height();
+
+    if (nodeTop < 0) {
+      $parent.scrollTop(parentScrollTop + nodeTop);
+    } else if (nodeBottom > parentHeight) {
+      $parent.scrollTop(parentScrollTop + nodeBottom - parentHeight);
+    }
+  }
+
+  $(document).on('keydown', function(e) {
+    var applicationFrames = $frameContainer.hasClass('frames-container-application'),
+        frameClass = applicationFrames ? '.frame.frame-application' : '.frame';
+
+	  if(e.ctrlKey || e.which === 74  || e.which === 75) {
+		  // CTRL+Arrow-UP/k and Arrow-Down/j support:
+		  // 1) select the next/prev element
+		  // 2) make sure the newly selected element is within the view-scope
+		  // 3) focus the (right) container, so arrow-up/down (without ctrl) scroll the details
+		  if (e.which === 38 /* arrow up */ || e.which === 75 /* k */) {
+			  $activeLine.prev(frameClass).click();
+			  scrollIntoView($activeLine, $leftPanel);
+			  $container.focus();
+			  e.preventDefault();
+		  } else if (e.which === 40 /* arrow down */ || e.which === 74 /* j */) {
+			  $activeLine.next(frameClass).click();
+			  scrollIntoView($activeLine, $leftPanel);
+			  $container.focus();
+			  e.preventDefault();
+		  }
+	  } else if (e.which == 78 /* n */) {
+      if ($appFramesTab.length) {
+        setActiveFramesTab($('.frames-tab:not(.frames-tab-active)'));
+      }
+    }
+  });
+
+  // Avoid to quit the page with some protocol (e.g. IntelliJ Platform REST API)
+  $ajaxEditors.on('click', function(e){
+    e.preventDefault();
+    $.get(this.href);
+  });
+
+  // Symfony VarDumper: Close the by default expanded objects
+  $('.sf-dump-expanded')
+    .removeClass('sf-dump-expanded')
+    .addClass('sf-dump-compact');
+  $('.sf-dump-toggle span').html('&#9654;');
+
+  // Make the given frames-tab active
+  function setActiveFramesTab($tab) {
+    $tab.addClass('frames-tab-active');
+
+    if ($tab.attr('id') == 'application-frames-tab') {
+      $frameContainer.addClass('frames-container-application');
+      $allFramesTab.removeClass('frames-tab-active');
+    } else {
+      $frameContainer.removeClass('frames-container-application');
+      $appFramesTab.removeClass('frames-tab-active');
+    }
+  }
+
+  $('a.frames-tab').on('click', function(e) {
+    e.preventDefault();
+    setActiveFramesTab($(this));
+  });
+
+  // Render late enough for highlightCurrentLine to be ready
+  renderCurrentCodeblock();
+});

vendor/filp/whoops/src/Whoops/Resources/views/env_details.html.php

@@ -0,0 +1,42 @@
+<?php /* List data-table values, i.e: $_SERVER, $_GET, .... */ ?>
+<div class="details">
+  <h2 class="details-heading">Environment &amp; details:</h2>
+
+  <div class="data-table-container" id="data-tables">
+    <?php foreach ($tables as $label => $data): ?>
+      <div class="data-table" id="sg-<?php echo $tpl->escape($tpl->slug($label)) ?>">
+        <?php if (!empty($data)): ?>
+            <label><?php echo $tpl->escape($label) ?></label>
+            <table class="data-table">
+              <thead>
+                <tr>
+                  <td class="data-table-k">Key</td>
+                  <td class="data-table-v">Value</td>
+                </tr>
+              </thead>
+            <?php foreach ($data as $k => $value): ?>
+              <tr>
+                <td><?php echo $tpl->escape($k) ?></td>
+                <td><?php echo $tpl->dump($value) ?></td>
+              </tr>
+            <?php endforeach ?>
+            </table>
+        <?php else: ?>
+            <label class="empty"><?php echo $tpl->escape($label) ?></label>
+            <span class="empty">empty</span>
+        <?php endif ?>
+      </div>
+    <?php endforeach ?>
+  </div>
+
+  <?php /* List registered handlers, in order of first to last registered */ ?>
+  <div class="data-table-container" id="handlers">
+    <label>Registered Handlers</label>
+    <?php foreach ($handlers as $i => $h): ?>
+      <div class="handler <?php echo ($h === $handler) ? 'active' : ''?>">
+        <?php echo $i ?>. <?php echo $tpl->escape(get_class($h)) ?>
+      </div>
+    <?php endforeach ?>
+  </div>
+
+</div>

vendor/filp/whoops/src/Whoops/Resources/views/frame_code.html.php

@@ -0,0 +1,67 @@
+<?php /* Display a code block for all frames in the stack.
+       * @todo: This should PROBABLY be done on-demand, lest
+       * we get 200 frames to process. */ ?>
+<div class="frame-code-container <?php echo (!$has_frames ? 'empty' : '') ?>">
+  <?php foreach ($frames as $i => $frame): ?>
+    <?php $line = $frame->getLine(); ?>
+      <div class="frame-code <?php echo ($i == 0 ) ? 'active' : '' ?>" id="frame-code-<?php echo $i ?>">
+        <div class="frame-file">
+          <?php $filePath = $frame->getFile(); ?>
+          <?php if ($filePath && $editorHref = $handler->getEditorHref($filePath, (int) $line)): ?>
+            <a href="<?php echo $editorHref ?>" class="editor-link"<?php echo ($handler->getEditorAjax($filePath, (int) $line) ? ' data-ajax' : '') ?>>
+              Open:
+              <strong><?php echo $tpl->breakOnDelimiter('/', $tpl->escape($filePath ?: '<#unknown>')) ?></strong>
+            </a>
+          <?php else: ?>
+            <strong><?php echo $tpl->breakOnDelimiter('/', $tpl->escape($filePath ?: '<#unknown>')) ?></strong>
+          <?php endif ?>
+        </div>
+        <?php
+          // Do nothing if there's no line to work off
+          if ($line !== null):
+
+          // the $line is 1-indexed, we nab -1 where needed to account for this
+          $range = $frame->getFileLines($line - 20, 40);
+
+          // getFileLines can return null if there is no source code
+          if ($range):
+            $range = array_map(function ($line) { return empty($line) ? ' ' : $line;}, $range);
+            $start = key($range) + 1;
+            $code  = join("\n", $range);
+        ?>
+            <pre class="code-block line-numbers"
+              data-line="<?php echo $line ?>"
+              data-line-offset="<?php echo $start ?>"
+              data-start="<?php echo $start ?>"
+            ><code class="language-php"><?php echo $tpl->escape($code) ?></code></pre>
+
+          <?php endif ?>
+        <?php endif ?>
+
+        <?php $frameArgs = $tpl->dumpArgs($frame); ?>
+        <?php if ($frameArgs): ?>
+          <div class="frame-file">
+              Arguments
+          </div>
+          <div id="frame-code-args-<?=$i?>" class="code-block frame-args">
+              <?php echo $frameArgs; ?>
+          </div>
+        <?php endif ?>
+
+        <?php
+          // Append comments for this frame
+          $comments = $frame->getComments();
+        ?>
+        <div class="frame-comments <?php echo empty($comments) ? 'empty' : '' ?>">
+          <?php foreach ($comments as $commentNo => $comment): ?>
+            <?php extract($comment) ?>
+            <div class="frame-comment" id="comment-<?php echo $i . '-' . $commentNo ?>">
+              <span class="frame-comment-context"><?php echo $tpl->escape($context) ?></span>
+              <?php echo $tpl->escapeButPreserveUris($comment) ?>
+            </div>
+          <?php endforeach ?>
+        </div>
+
+      </div>
+  <?php endforeach ?>
+</div>

vendor/filp/whoops/src/Whoops/Resources/views/frame_list.html.php

@@ -0,0 +1,17 @@
+<?php /* List file names & line numbers for all stack frames;
+         clicking these links/buttons will display the code view
+         for that particular frame */ ?>
+<?php foreach ($frames as $i => $frame): ?>
+  <div class="frame <?php echo ($i == 0 ? 'active' : '') ?> <?php echo ($frame->isApplication() ? 'frame-application' : '') ?>" id="frame-line-<?php echo $i ?>">
+      <span class="frame-index"><?php echo (count($frames) - $i - 1) ?></span>
+      <div class="frame-method-info">
+        <span class="frame-class"><?php echo $tpl->breakOnDelimiter('\\', $tpl->escape($frame->getClass() ?: '')) ?></span>
+        <span class="frame-function"><?php echo $tpl->breakOnDelimiter('\\', $tpl->escape($frame->getFunction() ?: '')) ?></span>
+      </div>
+
+    <div class="frame-file">
+        <?php echo $frame->getFile() ? $tpl->breakOnDelimiter('/', $tpl->shorten($tpl->escape($frame->getFile()))) : '<#unknown>' ?><!--
+   --><span class="frame-line"><?php echo (int) $frame->getLine() ?></span>
+    </div>
+  </div>
+<?php endforeach;

vendor/filp/whoops/src/Whoops/Resources/views/frames_container.html.php

@@ -0,0 +1,3 @@
+<div class="frames-container <?php echo $active_frames_tab == 'application' ? 'frames-container-application' : '' ?>">
+  <?php $tpl->render($frame_list) ?>
+</div>

vendor/filp/whoops/src/Whoops/Resources/views/frames_description.html.php

@@ -0,0 +1,14 @@
+<div class="frames-description <?php echo $has_frames_tabs ? 'frames-description-application' : '' ?>">
+  <?php if ($has_frames_tabs): ?>
+    <a href="#" id="application-frames-tab" class="frames-tab <?php echo $active_frames_tab == 'application' ? 'frames-tab-active' : '' ?>">
+        Application frames (<?php echo $frames->countIsApplication() ?>)
+    </a>
+    <a href="#" id="all-frames-tab" class="frames-tab <?php echo $active_frames_tab == 'all' ? 'frames-tab-active' : '' ?>">
+      All frames (<?php echo count($frames) ?>)
+    </a>
+  <?php else: ?>
+    <span>
+        Stack frames (<?php echo count($frames) ?>)
+    </span>
+  <?php endif; ?>
+</div>

vendor/filp/whoops/src/Whoops/Resources/views/header.html.php

@@ -0,0 +1,96 @@
+<div class="exception">
+  <div class="exc-title">
+    <?php foreach ($name as $i => $nameSection): ?>
+      <?php if ($i == count($name) - 1): ?>
+        <span class="exc-title-primary"><?php echo $tpl->escape($nameSection) ?></span>
+      <?php else: ?>
+        <?php echo $tpl->escape($nameSection) . ' \\' ?>
+      <?php endif ?>
+    <?php endforeach ?>
+    <?php if ($code): ?>
+      <span title="Exception Code">(<?php echo $tpl->escape($code) ?>)</span>
+    <?php endif ?>
+  </div>
+
+  <div class="exc-message">
+    <?php if (!empty($message)): ?>
+      <span><?php echo $tpl->escape($message) ?></span>
+
+
+      <?php if (count($previousMessages)): ?>
+        <div class="exc-title prev-exc-title">
+          <span class="exc-title-secondary">Previous exceptions</span>
+        </div>
+
+        <ul>
+          <?php foreach ($previousMessages as $i => $previousMessage): ?>
+            <li>
+              <?php echo $tpl->escape($previousMessage) ?>
+              <span class="prev-exc-code">(<?php echo $previousCodes[$i] ?>)</span>
+            </li>
+          <?php endforeach; ?>
+        </ul>
+      <?php endif ?>
+
+
+
+    <?php else: ?>
+      <span class="exc-message-empty-notice">No message</span>
+    <?php endif ?>
+
+    <ul class="search-for-help">
+      <?php if (!empty($docref_url)): ?>
+      <li>
+        <a rel="noopener noreferrer" target="_blank" href="<?php echo $docref_url; ?>" title="Search for help in the PHP manual.">
+          <!-- PHP icon by Icons Solid -->
+          <!-- https://www.iconfinder.com/icons/322421/book_icon -->
+          <!-- Free for commercial use -->
+          <svg height="16px" id="Layer_1" style="enable-background:new 0 0 32 32;" version="1.1" viewBox="0 0 32 32" width="16px" xml:space="preserve" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="translate(240 0)"><path d="M-211,4v26h-24c-1.104,0-2-0.895-2-2s0.896-2,2-2h22V0h-22c-2.209,0-4,1.791-4,4v24c0,2.209,1.791,4,4,4h26V4H-211z    M-235,8V2h20v22h-20V8z M-219,6h-12V4h12V6z M-223,10h-8V8h8V10z M-227,14h-4v-2h4V14z"/></g></svg>
+        </a>
+      </li>
+      <?php endif ?>
+      <li>
+        <a rel="noopener noreferrer" target="_blank" href="https://google.com/search?q=<?php echo urlencode(implode('\\', $name).' '.$message) ?>" title="Search for help on Google.">
+          <!-- Google icon by Alfredo H, from https://www.iconfinder.com/alfredoh -->
+          <!-- Creative Commons (Attribution 3.0 Unported) -->
+          <!-- http://creativecommons.org/licenses/by/3.0/ -->
+          <svg class="google" height="16" viewBox="0 0 512 512" width="16" xmlns="http://www.w3.org/2000/svg">
+            <path d="M457.732 216.625c2.628 14.04 4.063 28.743 4.063 44.098C461.795 380.688 381.48 466 260.205 466c-116.024 0-210-93.977-210-210s93.976-210 210-210c56.703 0 104.076 20.867 140.44 54.73l-59.205 59.197v-.135c-22.046-21.002-50-31.762-81.236-31.762-69.297 0-125.604 58.537-125.604 127.84 0 69.29 56.306 127.97 125.604 127.97 62.87 0 105.653-35.966 114.46-85.313h-114.46v-81.902h197.528z"/>
+          </svg>
+        </a>
+      </li>
+      <li>
+        <a rel="noopener noreferrer" target="_blank" href="https://duckduckgo.com/?q=<?php echo urlencode(implode('\\', $name).' '.$message) ?>" title="Search for help on DuckDuckGo.">
+          <!-- DuckDuckGo icon by IconBaandar Team, from https://www.iconfinder.com/iconbaandar -->
+          <!-- Creative Commons (Attribution 3.0 Unported) -->
+          <!-- http://creativecommons.org/licenses/by/3.0/ -->
+          <svg class="duckduckgo" height="16" viewBox="150 150 1675 1675" width="16" xmlns="http://www.w3.org/2000/svg">
+            <path d="M1792 1024c0 204.364-80.472 398.56-224.955 543.04-144.483 144.48-338.68 224.95-543.044 224.95-204.36 0-398.56-80.47-543.04-224.95-144.48-144.482-224.95-338.676-224.95-543.04 0-204.365 80.47-398.562 224.96-543.045C625.44 336.47 819.64 256 1024 256c204.367 0 398.565 80.47 543.05 224.954C1711.532 625.437 1792 819.634 1792 1024zm-270.206 497.787C1654.256 1389.327 1728 1211.36 1728 1024c0-187.363-73.74-365.332-206.203-497.796C1389.332 393.74 1211.363 320 1024 320s-365.33 73.742-497.795 206.205C393.742 658.67 320 836.637 320 1024c0 187.36 73.744 365.326 206.206 497.787C658.67 1654.25 836.638 1727.99 1024 1727.99c187.362 0 365.33-73.74 497.794-206.203z"/>
+            <path d="M1438.64 1177.41c0-.03-.005-.017-.01.004l.01-.004z"/>
+            <path d="M1499.8 976.878c.03-.156-.024-.048-.11.107l.11-.107z"/>
+            <path d="M1105.19 991.642zm-68.013-376.128c-8.087-10.14-18.028-19.965-29.89-29.408-13.29-10.582-29-20.76-47.223-30.443-35.07-18.624-74.482-31.61-115.265-38.046-39.78-6.28-80.84-6.256-120.39.917l1.37 31.562c1.8.164 7.7 3.9 14.36 8.32-20.68 5.94-39.77 14.447-39.48 39.683l.2 17.48 17.3-1.73c29.38-2.95 60.17-2.06 90.32 2.61 9.21 1.42 18.36 3.2 27.38 5.32l-4.33 1.15c-20.45 5.58-38.93 12.52-54.25 20.61-46.28 24.32-75.51 60.85-90.14 108.37-14.14 45.95-14.27 101.81-2.72 166.51l.06.06c15.14 84.57 64.16 316.39 104.11 505.39 19.78 93.59 37.38 176.83 47.14 224.4 3.26 15.84 5.03 31.02 5.52 45.52.3 9.08.09 17.96-.58 26.62-.45 5.8-1.11 11.51-1.96 17.112l31.62 4.75c.71-4.705 1.3-9.494 1.76-14.373 48.964 10.517 99.78 16.05 151.88 16.05 60.68 0 119.61-7.505 175.91-21.64 3.04 6.08 6.08 12.19 9.11 18.32l28.62-14.128c-2.11-4.27-4.235-8.55-6.37-12.84-23.005-46.124-47.498-93.01-68.67-133.534-15.39-29.466-29.01-55.53-39.046-75.58-26.826-53.618-53.637-119.47-68.28-182.368-8.78-37.705-13.128-74.098-10.308-105.627-15.31-6.28-26.69-11.8-31.968-15.59l-.01.015c-14.22-10.2-31.11-28.12-41.82-49.717-8.618-17.376-13.4-37.246-10.147-57.84 3.17-19.84 27.334-46.714 57.843-67.46v-.063c26.554-18.05 58.75-32.506 86.32-34.31 7.835-.51 16.31-1.008 23.99-1.45 33.45-1.95 50.243-2.93 84.475-11.42 10.88-2.697 26.19-6.56 43.53-11.09 2.364-40.7-5.947-87.596-21.04-133.234-22.004-66.53-58.68-131.25-97.627-170.21-12.543-12.55-28.17-22.79-45.9-30.933-16.88-7.753-35.64-13.615-55.436-17.782zm-10.658 178.553s6.77-42.485 58.39-33.977c27.96 4.654 37.89 29.833 37.89 29.833s-25.31-14.46-44.95-14.198c-40.33.53-51.35 18.342-51.35 18.342zm-240.45-18.802c48.49-19.853 72.11 11.298 72.11 11.298s-35.21-15.928-69.46 5.59c-34.19 21.477-32.92 43.452-32.92 43.452s-18.17-40.5 30.26-60.34zm296.5 95.4c0-6.677 2.68-12.694 7.01-17.02 4.37-4.37 10.42-7.074 17.1-7.074 6.73 0 12.79 2.7 17.15 7.05 4.33 4.33 7.01 10.36 7.01 17.05 0 6.74-2.7 12.81-7.07 17.18-4.33 4.33-10.37 7.01-17.1 7.01-6.68 0-12.72-2.69-17.05-7.03-4.36-4.37-7.07-10.43-7.07-17.16zm-268.42 51.27c0-8.535 3.41-16.22 8.93-21.738 5.55-5.55 13.25-8.982 21.81-8.982 8.51 0 16.18 3.415 21.7 8.934 5.55 5.55 8.98 13.25 8.98 21.78 0 8.53-3.44 16.23-8.98 21.79-5.52 5.52-13.19 8.93-21.71 8.93-8.55 0-16.26-3.43-21.82-8.99-5.52-5.52-8.93-13.2-8.93-21.74z"/>
+            <path d="M1102.48 986.34zm390.074-64.347c-28.917-11.34-74.89-12.68-93.32-3.778-11.5 5.567-35.743 13.483-63.565 21.707-25.75 7.606-53.9 15.296-78.15 21.702-17.69 4.67-33.3 8.66-44.4 11.435-34.92 8.76-52.05 9.77-86.17 11.78-7.84.46-16.48.97-24.48 1.5-28.12 1.86-60.97 16.77-88.05 35.4v.06c-31.12 21.4-55.77 49.12-59.01 69.59-3.32 21.24 1.56 41.74 10.35 59.67 10.92 22.28 28.15 40.77 42.66 51.29l.01-.02c5.38 3.9 16.98 9.6 32.6 16.08 26.03 10.79 63.2 23.76 101.25 34.23 43.6 11.99 89.11 21.05 121.69 20.41 34.26-.69 77.73-10.52 114.54-24.67 22.15-8.52 42.21-18.71 56.88-29.58 17.85-13.22 28.7-28.42 28.4-44.74-.07-3.89-.72-7.63-1.97-11.21l-.02.01c-11.6-33.06-50.37-23.59-105.53-10.12-46.86 11.445-107.94 26.365-169.01 20.434-32.56-3.167-54.45-10.61-67.88-20.133-5.96-4.224-9.93-8.67-12.18-13.11-1.96-3.865-2.68-7.84-2.33-11.714.39-4.42 2.17-9.048 5.1-13.57l-.05-.03c7.86-12.118 23.082-9.72 43.93-6.43 25.91 4.08 58.2 9.172 99.013-3.61 39.63-12.378 87.76-29.9 131.184-47.39 42.405-17.08 80.08-34.078 100.74-46.18 25.46-14.87 37.57-29.428 40.59-42.866 2.725-12.152-.89-22.48-8.903-31.07-5.87-6.29-14.254-11.31-23.956-15.115z"/>
+          </svg>
+        </a>
+      </li>
+      <li>
+        <a rel="noopener noreferrer" target="_blank" href="https://stackoverflow.com/search?q=<?php echo urlencode(implode('\\', $name).' '.$message) ?>" title="Search for help on Stack Overflow.">
+          <!-- Stack Overflow icon by Picons.me, from https://www.iconfinder.com/Picons -->
+          <!-- Free for commercial use -->
+          <svg class="stackoverflow" height="16" viewBox="-1163 1657.697 56.693 56.693" width="16" xmlns="http://www.w3.org/2000/svg">
+            <path d="M-1126.04 1689.533l-16.577-9.778 2.088-3.54 16.578 9.778zM-1127.386 1694.635l-18.586-4.996 1.068-3.97 18.586 4.995zM-1127.824 1700.137l-19.165-1.767.378-4.093 19.165 1.767zM-1147.263 1701.293h19.247v4.11h-19.247z"/>
+            <path d="M-1121.458 1710.947s0 .96-.032.96v.016h-30.796s-.96 0-.96-.016h-.032v-20.03h3.288v16.805h25.244v-16.804h3.288v19.07zM-1130.667 1667.04l10.844 15.903-3.396 2.316-10.843-15.903zM-1118.313 1663.044l3.29 18.963-4.05.703-3.29-18.963z"/>
+          </svg>
+        </a>
+      </li>
+    </ul>
+
+    <span id="plain-exception"><?php echo $tpl->escape($plain_exception) ?></span>
+    <button id="copy-button" class="rightButton clipboard" data-clipboard-text="<?php echo $tpl->escape($plain_exception) ?>" title="Copy exception details to clipboard">
+      COPY
+    </button>
+    <button id="hide-error" class="rightButton" title="Hide error message" onclick="document.getElementsByClassName('Whoops')[0].style.display = 'none';">
+      HIDE
+    </button>
+  </div>
+</div>

vendor/filp/whoops/src/Whoops/Resources/views/header_outer.html.php

@@ -0,0 +1,3 @@
+<header>
+  <?php $tpl->render($header) ?>
+</header>

vendor/filp/whoops/src/Whoops/Resources/views/layout.html.php

@@ -0,0 +1,34 @@
+<?php
+/**
+* Layout template file for Whoops's pretty error output.
+*/
+?>
+<!DOCTYPE html><?php echo $preface; ?>
+<html>
+  <head>
+    <meta charset="utf-8">
+    <meta name="robots" content="noindex,nofollow"/>
+    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no"/>
+    <title><?php echo $tpl->escape($page_title) ?></title>
+
+    <style><?php echo $stylesheet ?></style>
+    <style><?php echo $prismCss ?></style>
+  </head>
+  <body>
+
+    <div class="Whoops container">
+      <div class="stack-container">
+
+        <?php $tpl->render($panel_left_outer) ?>
+
+        <?php $tpl->render($panel_details_outer) ?>
+
+      </div>
+    </div>
+
+    <script data-manual><?php echo $prismJs ?></script>
+    <script><?php echo $zepto ?></script>
+    <script><?php echo $clipboard ?></script>
+    <script><?php echo $javascript ?></script>
+  </body>
+</html>

vendor/filp/whoops/src/Whoops/Resources/views/panel_details.html.php

@@ -0,0 +1,2 @@
+<?php $tpl->render($frame_code) ?>
+<?php $tpl->render($env_details) ?>

vendor/filp/whoops/src/Whoops/Resources/views/panel_details_outer.html.php

@@ -0,0 +1,3 @@
+<div class="panel details-container cf">
+  <?php $tpl->render($panel_details) ?>
+</div>

vendor/filp/whoops/src/Whoops/Resources/views/panel_left.html.php

@@ -0,0 +1,4 @@
+<?php 
+$tpl->render($header_outer);
+$tpl->render($frames_description);
+$tpl->render($frames_container);

vendor/filp/whoops/src/Whoops/Resources/views/panel_left_outer.html.php

@@ -0,0 +1,3 @@
+<div class="panel left-panel cf <?php echo (!$has_frames ? 'empty' : '') ?>">
+  <?php $tpl->render($panel_left) ?>
+</div>

vendor/filp/whoops/src/Whoops/Run.php

@@ -0,0 +1,597 @@
+<?php
+/**
+ * Whoops - php errors for cool kids
+ * @author Filipe Dobreira <http://github.com/filp>
+ */
+
+namespace Whoops;
+
+use InvalidArgumentException;
+use Throwable;
+use Whoops\Exception\ErrorException;
+use Whoops\Handler\CallbackHandler;
+use Whoops\Handler\Handler;
+use Whoops\Handler\HandlerInterface;
+use Whoops\Inspector\CallableInspectorFactory;
+use Whoops\Inspector\InspectorFactory;
+use Whoops\Inspector\InspectorFactoryInterface;
+use Whoops\Inspector\InspectorInterface;
+use Whoops\Util\Misc;
+use Whoops\Util\SystemFacade;
+
+final class Run implements RunInterface
+{
+    /**
+     * @var bool
+     */
+    private $isRegistered;
+
+    /**
+     * @var bool
+     */
+    private $allowQuit       = true;
+
+    /**
+     * @var bool
+     */
+    private $sendOutput      = true;
+
+    /**
+     * @var integer|false
+     */
+    private $sendHttpCode    = 500;
+
+    /**
+     * @var integer|false
+     */
+    private $sendExitCode    = 1;
+
+    /**
+     * @var HandlerInterface[]
+     */
+    private $handlerStack = [];
+
+    /**
+     * @var array
+     * @psalm-var list<array{patterns: string, levels: int}>
+     */
+    private $silencedPatterns = [];
+
+    /**
+     * @var SystemFacade
+     */
+    private $system;
+
+    /**
+     * In certain scenarios, like in shutdown handler, we can not throw exceptions.
+     *
+     * @var bool
+     */
+    private $canThrowExceptions = true;
+
+    /**
+     * The inspector factory to create inspectors.
+     *
+     * @var InspectorFactoryInterface
+     */
+    private $inspectorFactory;
+
+    /**
+     * @var array<callable>
+     */
+    private $frameFilters = [];
+
+    public function __construct(SystemFacade $system = null)
+    {
+        $this->system = $system ?: new SystemFacade;
+        $this->inspectorFactory = new InspectorFactory();
+    }
+
+    /**
+     * Explicitly request your handler runs as the last of all currently registered handlers.
+     *
+     * @param callable|HandlerInterface $handler
+     *
+     * @return Run
+     */
+    public function appendHandler($handler)
+    {
+        array_unshift($this->handlerStack, $this->resolveHandler($handler));
+        return $this;
+    }
+
+    /**
+     * Explicitly request your handler runs as the first of all currently registered handlers.
+     *
+     * @param callable|HandlerInterface $handler
+     *
+     * @return Run
+     */
+    public function prependHandler($handler)
+    {
+        return $this->pushHandler($handler);
+    }
+
+    /**
+     * Register your handler as the last of all currently registered handlers (to be executed first).
+     * Prefer using appendHandler and prependHandler for clarity.
+     *
+     * @param callable|HandlerInterface $handler
+     *
+     * @return Run
+     *
+     * @throws InvalidArgumentException If argument is not callable or instance of HandlerInterface.
+     */
+    public function pushHandler($handler)
+    {
+        $this->handlerStack[] = $this->resolveHandler($handler);
+        return $this;
+    }
+
+    /**
+     * Removes and returns the last handler pushed to the handler stack.
+     *
+     * @see Run::removeFirstHandler(), Run::removeLastHandler()
+     *
+     * @return HandlerInterface|null
+     */
+    public function popHandler()
+    {
+        return array_pop($this->handlerStack);
+    }
+
+    /**
+     * Removes the first handler.
+     *
+     * @return void
+     */
+    public function removeFirstHandler()
+    {
+        array_pop($this->handlerStack);
+    }
+
+    /**
+     * Removes the last handler.
+     *
+     * @return void
+     */
+    public function removeLastHandler()
+    {
+        array_shift($this->handlerStack);
+    }
+
+    /**
+     * Returns an array with all handlers, in the order they were added to the stack.
+     *
+     * @return array
+     */
+    public function getHandlers()
+    {
+        return $this->handlerStack;
+    }
+
+    /**
+     * Clears all handlers in the handlerStack, including the default PrettyPage handler.
+     *
+     * @return Run
+     */
+    public function clearHandlers()
+    {
+        $this->handlerStack = [];
+        return $this;
+    }
+
+    public function getFrameFilters()
+    {
+        return $this->frameFilters;
+    }
+
+    public function clearFrameFilters()
+    {
+        $this->frameFilters = [];
+        return $this;
+    }
+
+    /**
+     * Registers this instance as an error handler.
+     *
+     * @return Run
+     */
+    public function register()
+    {
+        if (!$this->isRegistered) {
+            // Workaround PHP bug 42098
+            // https://bugs.php.net/bug.php?id=42098
+            class_exists("\\Whoops\\Exception\\ErrorException");
+            class_exists("\\Whoops\\Exception\\FrameCollection");
+            class_exists("\\Whoops\\Exception\\Frame");
+            class_exists("\\Whoops\\Exception\\Inspector");
+            class_exists("\\Whoops\\Inspector\\InspectorFactory");
+
+            $this->system->setErrorHandler([$this, self::ERROR_HANDLER]);
+            $this->system->setExceptionHandler([$this, self::EXCEPTION_HANDLER]);
+            $this->system->registerShutdownFunction([$this, self::SHUTDOWN_HANDLER]);
+
+            $this->isRegistered = true;
+        }
+
+        return $this;
+    }
+
+    /**
+     * Unregisters all handlers registered by this Whoops\Run instance.
+     *
+     * @return Run
+     */
+    public function unregister()
+    {
+        if ($this->isRegistered) {
+            $this->system->restoreExceptionHandler();
+            $this->system->restoreErrorHandler();
+
+            $this->isRegistered = false;
+        }
+
+        return $this;
+    }
+
+    /**
+     * Should Whoops allow Handlers to force the script to quit?
+     *
+     * @param bool|int $exit
+     *
+     * @return bool
+     */
+    public function allowQuit($exit = null)
+    {
+        if (func_num_args() == 0) {
+            return $this->allowQuit;
+        }
+
+        return $this->allowQuit = (bool) $exit;
+    }
+
+    /**
+     * Silence particular errors in particular files.
+     *
+     * @param array|string $patterns List or a single regex pattern to match.
+     * @param int          $levels   Defaults to E_STRICT | E_DEPRECATED.
+     *
+     * @return Run
+     */
+    public function silenceErrorsInPaths($patterns, $levels = 10240)
+    {
+        $this->silencedPatterns = array_merge(
+            $this->silencedPatterns,
+            array_map(
+                function ($pattern) use ($levels) {
+                    return [
+                        "pattern" => $pattern,
+                        "levels" => $levels,
+                    ];
+                },
+                (array) $patterns
+            )
+        );
+
+        return $this;
+    }
+
+    /**
+     * Returns an array with silent errors in path configuration.
+     *
+     * @return array
+     */
+    public function getSilenceErrorsInPaths()
+    {
+        return $this->silencedPatterns;
+    }
+
+    /**
+     * Should Whoops send HTTP error code to the browser if possible?
+     * Whoops will by default send HTTP code 500, but you may wish to
+     * use 502, 503, or another 5xx family code.
+     *
+     * @param bool|int $code
+     *
+     * @return int|false
+     *
+     * @throws InvalidArgumentException
+     */
+    public function sendHttpCode($code = null)
+    {
+        if (func_num_args() == 0) {
+            return $this->sendHttpCode;
+        }
+
+        if (!$code) {
+            return $this->sendHttpCode = false;
+        }
+
+        if ($code === true) {
+            $code = 500;
+        }
+
+        if ($code < 400 || 600 <= $code) {
+            throw new InvalidArgumentException(
+                "Invalid status code '$code', must be 4xx or 5xx"
+            );
+        }
+
+        return $this->sendHttpCode = $code;
+    }
+
+    /**
+     * Should Whoops exit with a specific code on the CLI if possible?
+     * Whoops will exit with 1 by default, but you can specify something else.
+     *
+     * @param int $code
+     *
+     * @return int
+     *
+     * @throws InvalidArgumentException
+     */
+    public function sendExitCode($code = null)
+    {
+        if (func_num_args() == 0) {
+            return $this->sendExitCode;
+        }
+
+        if ($code < 0 || 255 <= $code) {
+            throw new InvalidArgumentException(
+                "Invalid status code '$code', must be between 0 and 254"
+            );
+        }
+
+        return $this->sendExitCode = (int) $code;
+    }
+
+    /**
+     * Should Whoops push output directly to the client?
+     * If this is false, output will be returned by handleException.
+     *
+     * @param bool|int $send
+     *
+     * @return bool
+     */
+    public function writeToOutput($send = null)
+    {
+        if (func_num_args() == 0) {
+            return $this->sendOutput;
+        }
+
+        return $this->sendOutput = (bool) $send;
+    }
+
+    /**
+     * Handles an exception, ultimately generating a Whoops error page.
+     *
+     * @param Throwable $exception
+     *
+     * @return string Output generated by handlers.
+     */
+    public function handleException($exception)
+    {
+        // Walk the registered handlers in the reverse order
+        // they were registered, and pass off the exception
+        $inspector = $this->getInspector($exception);
+
+        // Capture output produced while handling the exception,
+        // we might want to send it straight away to the client,
+        // or return it silently.
+        $this->system->startOutputBuffering();
+
+        // Just in case there are no handlers:
+        $handlerResponse = null;
+        $handlerContentType = null;
+
+        try {
+            foreach (array_reverse($this->handlerStack) as $handler) {
+                $handler->setRun($this);
+                $handler->setInspector($inspector);
+                $handler->setException($exception);
+
+                // The HandlerInterface does not require an Exception passed to handle()
+                // and neither of our bundled handlers use it.
+                // However, 3rd party handlers may have already relied on this parameter,
+                // and removing it would be possibly breaking for users.
+                $handlerResponse = $handler->handle($exception);
+
+                // Collect the content type for possible sending in the headers.
+                $handlerContentType = method_exists($handler, 'contentType') ? $handler->contentType() : null;
+
+                if (in_array($handlerResponse, [Handler::LAST_HANDLER, Handler::QUIT])) {
+                    // The Handler has handled the exception in some way, and
+                    // wishes to quit execution (Handler::QUIT), or skip any
+                    // other handlers (Handler::LAST_HANDLER). If $this->allowQuit
+                    // is false, Handler::QUIT behaves like Handler::LAST_HANDLER
+                    break;
+                }
+            }
+
+            $willQuit = $handlerResponse == Handler::QUIT && $this->allowQuit();
+        } finally {
+            $output = $this->system->cleanOutputBuffer();
+        }
+
+        // If we're allowed to, send output generated by handlers directly
+        // to the output, otherwise, and if the script doesn't quit, return
+        // it so that it may be used by the caller
+        if ($this->writeToOutput()) {
+            // @todo Might be able to clean this up a bit better
+            if ($willQuit) {
+                // Cleanup all other output buffers before sending our output:
+                while ($this->system->getOutputBufferLevel() > 0) {
+                    $this->system->endOutputBuffering();
+                }
+
+                // Send any headers if needed:
+                if (Misc::canSendHeaders() && $handlerContentType) {
+                    header("Content-Type: {$handlerContentType}");
+                }
+            }
+
+            $this->writeToOutputNow($output);
+        }
+
+        if ($willQuit) {
+            // HHVM fix for https://github.com/facebook/hhvm/issues/4055
+            $this->system->flushOutputBuffer();
+
+            $this->system->stopExecution(
+                $this->sendExitCode()
+            );
+        }
+
+        return $output;
+    }
+
+    /**
+     * Converts generic PHP errors to \ErrorException instances, before passing them off to be handled.
+     *
+     * This method MUST be compatible with set_error_handler.
+     *
+     * @param int         $level
+     * @param string      $message
+     * @param string|null $file
+     * @param int|null    $line
+     *
+     * @return bool
+     *
+     * @throws ErrorException
+     */
+    public function handleError($level, $message, $file = null, $line = null)
+    {
+        if ($level & $this->system->getErrorReportingLevel()) {
+            foreach ($this->silencedPatterns as $entry) {
+                $pathMatches = (bool) preg_match($entry["pattern"], $file);
+                $levelMatches = $level & $entry["levels"];
+                if ($pathMatches && $levelMatches) {
+                    // Ignore the error, abort handling
+                    // See https://github.com/filp/whoops/issues/418
+                    return true;
+                }
+            }
+
+            // XXX we pass $level for the "code" param only for BC reasons.
+            // see https://github.com/filp/whoops/issues/267
+            $exception = new ErrorException($message, /*code*/ $level, /*severity*/ $level, $file, $line);
+            if ($this->canThrowExceptions) {
+                throw $exception;
+            } else {
+                $this->handleException($exception);
+            }
+            // Do not propagate errors which were already handled by Whoops.
+            return true;
+        }
+
+        // Propagate error to the next handler, allows error_get_last() to
+        // work on silenced errors.
+        return false;
+    }
+
+    /**
+     * Special case to deal with Fatal errors and the like.
+     *
+     * @return void
+     */
+    public function handleShutdown()
+    {
+        // If we reached this step, we are in shutdown handler.
+        // An exception thrown in a shutdown handler will not be propagated
+        // to the exception handler. Pass that information along.
+        $this->canThrowExceptions = false;
+
+        $error = $this->system->getLastError();
+        if ($error && Misc::isLevelFatal($error['type'])) {
+            // If there was a fatal error,
+            // it was not handled in handleError yet.
+            $this->allowQuit = false;
+            $this->handleError(
+                $error['type'],
+                $error['message'],
+                $error['file'],
+                $error['line']
+            );
+        }
+    }
+
+
+    /**
+     * @param InspectorFactoryInterface $factory
+     *
+     * @return void
+     */
+    public function setInspectorFactory(InspectorFactoryInterface $factory)
+    {
+        $this->inspectorFactory = $factory;
+    }
+
+    public function addFrameFilter($filterCallback)
+    {
+        if (!is_callable($filterCallback)) {
+            throw new \InvalidArgumentException(sprintf(
+                "A frame filter must be of type callable, %s type given.", 
+                gettype($filterCallback)
+            ));
+        }
+
+        $this->frameFilters[] = $filterCallback;
+        return $this;
+    }
+
+    /**
+     * @param Throwable $exception
+     *
+     * @return InspectorInterface
+     */
+    private function getInspector($exception)
+    {
+        return $this->inspectorFactory->create($exception);
+    }
+
+    /**
+     * Resolves the giving handler.
+     *
+     * @param callable|HandlerInterface $handler
+     *
+     * @return HandlerInterface
+     *
+     * @throws InvalidArgumentException
+     */
+    private function resolveHandler($handler)
+    {
+        if (is_callable($handler)) {
+            $handler = new CallbackHandler($handler);
+        }
+
+        if (!$handler instanceof HandlerInterface) {
+            throw new InvalidArgumentException(
+                "Handler must be a callable, or instance of "
+                . "Whoops\\Handler\\HandlerInterface"
+            );
+        }
+
+        return $handler;
+    }
+
+    /**
+     * Echo something to the browser.
+     *
+     * @param string $output
+     *
+     * @return Run
+     */
+    private function writeToOutputNow($output)
+    {
+        if ($this->sendHttpCode() && Misc::canSendHeaders()) {
+            $this->system->setHttpResponseCode(
+                $this->sendHttpCode()
+            );
+        }
+
+        echo $output;
+
+        return $this;
+    }
+}

vendor/filp/whoops/src/Whoops/RunInterface.php

@@ -0,0 +1,158 @@
+<?php
+/**
+ * Whoops - php errors for cool kids
+ * @author Filipe Dobreira <http://github.com/filp>
+ */
+
+namespace Whoops;
+
+use InvalidArgumentException;
+use Whoops\Exception\ErrorException;
+use Whoops\Handler\HandlerInterface;
+
+interface RunInterface
+{
+    const EXCEPTION_HANDLER = "handleException";
+    const ERROR_HANDLER     = "handleError";
+    const SHUTDOWN_HANDLER  = "handleShutdown";
+
+    /**
+     * Pushes a handler to the end of the stack
+     *
+     * @throws InvalidArgumentException  If argument is not callable or instance of HandlerInterface
+     * @param  Callable|HandlerInterface $handler
+     * @return Run
+     */
+    public function pushHandler($handler);
+
+    /**
+     * Removes the last handler in the stack and returns it.
+     * Returns null if there"s nothing else to pop.
+     *
+     * @return null|HandlerInterface
+     */
+    public function popHandler();
+
+    /**
+     * Returns an array with all handlers, in the
+     * order they were added to the stack.
+     *
+     * @return array
+     */
+    public function getHandlers();
+
+    /**
+     * Clears all handlers in the handlerStack, including
+     * the default PrettyPage handler.
+     *
+     * @return Run
+     */
+    public function clearHandlers();
+
+    /**
+     * @return array<callable>
+     */
+    public function getFrameFilters();
+
+    /**
+     * @return Run
+     */
+    public function clearFrameFilters();
+
+    /**
+     * Registers this instance as an error handler.
+     *
+     * @return Run
+     */
+    public function register();
+
+    /**
+     * Unregisters all handlers registered by this Whoops\Run instance
+     *
+     * @return Run
+     */
+    public function unregister();
+
+    /**
+     * Should Whoops allow Handlers to force the script to quit?
+     *
+     * @param  bool|int $exit
+     * @return bool
+     */
+    public function allowQuit($exit = null);
+
+    /**
+     * Silence particular errors in particular files
+     *
+     * @param  array|string $patterns List or a single regex pattern to match
+     * @param  int          $levels   Defaults to E_STRICT | E_DEPRECATED
+     * @return \Whoops\Run
+     */
+    public function silenceErrorsInPaths($patterns, $levels = 10240);
+
+    /**
+     * Should Whoops send HTTP error code to the browser if possible?
+     * Whoops will by default send HTTP code 500, but you may wish to
+     * use 502, 503, or another 5xx family code.
+     *
+     * @param bool|int $code
+     * @return int|false
+     */
+    public function sendHttpCode($code = null);
+
+    /**
+     * Should Whoops exit with a specific code on the CLI if possible?
+     * Whoops will exit with 1 by default, but you can specify something else.
+     *
+     * @param int $code
+     * @return int
+     */
+    public function sendExitCode($code = null);
+
+    /**
+     * Should Whoops push output directly to the client?
+     * If this is false, output will be returned by handleException
+     *
+     * @param  bool|int $send
+     * @return bool
+     */
+    public function writeToOutput($send = null);
+
+    /**
+     * Handles an exception, ultimately generating a Whoops error
+     * page.
+     *
+     * @param  \Throwable $exception
+     * @return string     Output generated by handlers
+     */
+    public function handleException($exception);
+
+    /**
+     * Converts generic PHP errors to \ErrorException
+     * instances, before passing them off to be handled.
+     *
+     * This method MUST be compatible with set_error_handler.
+     *
+     * @param int    $level
+     * @param string $message
+     * @param string $file
+     * @param int    $line
+     *
+     * @return bool
+     * @throws ErrorException
+     */
+    public function handleError($level, $message, $file = null, $line = null);
+
+    /**
+     * Special case to deal with Fatal errors and the like.
+     */
+    public function handleShutdown();
+
+    /**
+     * Registers a filter callback in the frame filters stack.
+     *
+     * @param callable $filterCallback
+     * @return \Whoops\Run
+     */
+    public function addFrameFilter($filterCallback);
+}

vendor/filp/whoops/src/Whoops/Util/HtmlDumperOutput.php

@@ -0,0 +1,36 @@
+<?php
+/**
+ * Whoops - php errors for cool kids
+ * @author Filipe Dobreira <http://github.com/filp>
+ */
+
+namespace Whoops\Util;
+
+/**
+ * Used as output callable for Symfony\Component\VarDumper\Dumper\HtmlDumper::dump()
+ *
+ * @see TemplateHelper::dump()
+ */
+class HtmlDumperOutput
+{
+    private $output;
+
+    public function __invoke($line, $depth)
+    {
+        // A negative depth means "end of dump"
+        if ($depth >= 0) {
+            // Adds a two spaces indentation to the line
+            $this->output .= str_repeat('  ', $depth) . $line . "\n";
+        }
+    }
+
+    public function getOutput()
+    {
+        return $this->output;
+    }
+
+    public function clear()
+    {
+        $this->output = null;
+    }
+}

vendor/filp/whoops/src/Whoops/Util/Misc.php

@@ -0,0 +1,77 @@
+<?php
+/**
+ * Whoops - php errors for cool kids
+ * @author Filipe Dobreira <http://github.com/filp>
+ */
+
+namespace Whoops\Util;
+
+class Misc
+{
+    /**
+     * Can we at this point in time send HTTP headers?
+     *
+     * Currently this checks if we are even serving an HTTP request,
+     * as opposed to running from a command line.
+     *
+     * If we are serving an HTTP request, we check if it's not too late.
+     *
+     * @return bool
+     */
+    public static function canSendHeaders()
+    {
+        return isset($_SERVER["REQUEST_URI"]) && !headers_sent();
+    }
+
+    public static function isAjaxRequest()
+    {
+        return (
+            !empty($_SERVER['HTTP_X_REQUESTED_WITH'])
+            && strtolower($_SERVER['HTTP_X_REQUESTED_WITH']) == 'xmlhttprequest');
+    }
+
+    /**
+     * Check, if possible, that this execution was triggered by a command line.
+     * @return bool
+     */
+    public static function isCommandLine()
+    {
+        return PHP_SAPI == 'cli';
+    }
+
+    /**
+     * Translate ErrorException code into the represented constant.
+     *
+     * @param int $error_code
+     * @return string
+     */
+    public static function translateErrorCode($error_code)
+    {
+        $constants = get_defined_constants(true);
+        if (array_key_exists('Core', $constants)) {
+            foreach ($constants['Core'] as $constant => $value) {
+                if (substr($constant, 0, 2) == 'E_' && $value == $error_code) {
+                    return $constant;
+                }
+            }
+        }
+        return "E_UNKNOWN";
+    }
+    
+    /**
+     * Determine if an error level is fatal (halts execution)
+     *
+     * @param int $level
+     * @return bool
+     */
+    public static function isLevelFatal($level)
+    {
+        $errors = E_ERROR;
+        $errors |= E_PARSE;
+        $errors |= E_CORE_ERROR;
+        $errors |= E_CORE_WARNING;
+        $errors |= E_COMPILE_ERROR;
+        $errors |= E_COMPILE_WARNING;
+        return ($level & $errors) > 0;
+    }
+}

vendor/filp/whoops/src/Whoops/Util/SystemFacade.php

@@ -0,0 +1,144 @@
+<?php
+/**
+ * Whoops - php errors for cool kids
+ * @author Filipe Dobreira <http://github.com/filp>
+ */
+
+namespace Whoops\Util;
+
+class SystemFacade
+{
+    /**
+     * Turns on output buffering.
+     *
+     * @return bool
+     */
+    public function startOutputBuffering()
+    {
+        return ob_start();
+    }
+
+    /**
+     * @param callable $handler
+     * @param int      $types
+     *
+     * @return callable|null
+     */
+    public function setErrorHandler(callable $handler, $types = 'use-php-defaults')
+    {
+        // Since PHP 5.4 the constant E_ALL contains all errors (even E_STRICT)
+        if ($types === 'use-php-defaults') {
+            $types = E_ALL;
+        }
+        return set_error_handler($handler, $types);
+    }
+
+    /**
+     * @param callable $handler
+     *
+     * @return callable|null
+     */
+    public function setExceptionHandler(callable $handler)
+    {
+        return set_exception_handler($handler);
+    }
+
+    /**
+     * @return void
+     */
+    public function restoreExceptionHandler()
+    {
+        restore_exception_handler();
+    }
+
+    /**
+     * @return void
+     */
+    public function restoreErrorHandler()
+    {
+        restore_error_handler();
+    }
+
+    /**
+     * @param callable $function
+     *
+     * @return void
+     */
+    public function registerShutdownFunction(callable $function)
+    {
+        register_shutdown_function($function);
+    }
+
+    /**
+     * @return string|false
+     */
+    public function cleanOutputBuffer()
+    {
+        return ob_get_clean();
+    }
+
+    /**
+     * @return int
+     */
+    public function getOutputBufferLevel()
+    {
+        return ob_get_level();
+    }
+
+    /**
+     * @return bool
+     */
+    public function endOutputBuffering()
+    {
+        return ob_end_clean();
+    }
+
+    /**
+     * @return void
+     */
+    public function flushOutputBuffer()
+    {
+        flush();
+    }
+
+    /**
+     * @return int
+     */
+    public function getErrorReportingLevel()
+    {
+        return error_reporting();
+    }
+
+    /**
+     * @return array|null
+     */
+    public function getLastError()
+    {
+        return error_get_last();
+    }
+
+    /**
+     * @param int $httpCode
+     *
+     * @return int
+     */
+    public function setHttpResponseCode($httpCode)
+    {
+        if (!headers_sent()) {
+            // Ensure that no 'location' header is present as otherwise this
+            // will override the HTTP code being set here, and mask the
+            // expected error page.
+            header_remove('location');
+        }
+
+        return http_response_code($httpCode);
+    }
+
+    /**
+     * @param int $exitStatus
+     */
+    public function stopExecution($exitStatus)
+    {
+        exit($exitStatus);
+    }
+}

vendor/filp/whoops/src/Whoops/Util/TemplateHelper.php

@@ -0,0 +1,349 @@
+<?php
+/**
+ * Whoops - php errors for cool kids
+ * @author Filipe Dobreira <http://github.com/filp>
+ */
+
+namespace Whoops\Util;
+
+use Symfony\Component\VarDumper\Caster\Caster;
+use Symfony\Component\VarDumper\Cloner\AbstractCloner;
+use Symfony\Component\VarDumper\Cloner\VarCloner;
+use Symfony\Component\VarDumper\Dumper\HtmlDumper;
+use Whoops\Exception\Frame;
+
+/**
+ * Exposes useful tools for working with/in templates
+ */
+class TemplateHelper
+{
+    /**
+     * An array of variables to be passed to all templates
+     * @var array
+     */
+    private $variables = [];
+
+    /**
+     * @var HtmlDumper
+     */
+    private $htmlDumper;
+
+    /**
+     * @var HtmlDumperOutput
+     */
+    private $htmlDumperOutput;
+
+    /**
+     * @var AbstractCloner
+     */
+    private $cloner;
+
+    /**
+     * @var string
+     */
+    private $applicationRootPath;
+
+    public function __construct()
+    {
+        // root path for ordinary composer projects
+        $this->applicationRootPath = dirname(dirname(dirname(dirname(dirname(dirname(__DIR__))))));
+    }
+
+    /**
+     * Escapes a string for output in an HTML document
+     *
+     * @param  string $raw
+     * @return string
+     */
+    public function escape($raw)
+    {
+        $flags = ENT_QUOTES;
+
+        // HHVM has all constants defined, but only ENT_IGNORE
+        // works at the moment
+        if (defined("ENT_SUBSTITUTE") && !defined("HHVM_VERSION")) {
+            $flags |= ENT_SUBSTITUTE;
+        } else {
+            // This is for 5.3.
+            // The documentation warns of a potential security issue,
+            // but it seems it does not apply in our case, because
+            // we do not blacklist anything anywhere.
+            $flags |= ENT_IGNORE;
+        }
+
+        $raw = str_replace(chr(9), '    ', $raw);
+
+        return htmlspecialchars($raw, $flags, "UTF-8");
+    }
+
+    /**
+     * Escapes a string for output in an HTML document, but preserves
+     * URIs within it, and converts them to clickable anchor elements.
+     *
+     * @param  string $raw
+     * @return string
+     */
+    public function escapeButPreserveUris($raw)
+    {
+        $escaped = $this->escape($raw);
+        return preg_replace(
+            "@([A-z]+?://([-\w\.]+[-\w])+(:\d+)?(/([\w/_\.#-]*(\?\S+)?[^\.\s])?)?)@",
+            "<a href=\"$1\" target=\"_blank\" rel=\"noreferrer noopener\">$1</a>",
+            $escaped
+        );
+    }
+
+    /**
+     * Makes sure that the given string breaks on the delimiter.
+     *
+     * @param  string $delimiter
+     * @param  string $s
+     * @return string
+     */
+    public function breakOnDelimiter($delimiter, $s)
+    {
+        $parts = explode($delimiter, $s);
+        foreach ($parts as &$part) {
+            $part = '<span class="delimiter">' . $part . '</span>';
+        }
+
+        return implode($delimiter, $parts);
+    }
+
+    /**
+     * Replace the part of the path that all files have in common.
+     *
+     * @param  string $path
+     * @return string
+     */
+    public function shorten($path)
+    {
+        if ($this->applicationRootPath != "/") {
+            $path = str_replace($this->applicationRootPath, '&hellip;', $path);
+        }
+
+        return $path;
+    }
+
+    private function getDumper()
+    {
+        if (!$this->htmlDumper && class_exists('Symfony\Component\VarDumper\Cloner\VarCloner')) {
+            $this->htmlDumperOutput = new HtmlDumperOutput();
+            // re-use the same var-dumper instance, so it won't re-render the global styles/scripts on each dump.
+            $this->htmlDumper = new HtmlDumper($this->htmlDumperOutput);
+
+            $styles = [
+                'default' => 'color:#FFFFFF; line-height:normal; font:12px "Inconsolata", "Fira Mono", "Source Code Pro", Monaco, Consolas, "Lucida Console", monospace !important; word-wrap: break-word; white-space: pre-wrap; position:relative; z-index:99999; word-break: normal',
+                'num' => 'color:#BCD42A',
+                'const' => 'color: #4bb1b1;',
+                'str' => 'color:#BCD42A',
+                'note' => 'color:#ef7c61',
+                'ref' => 'color:#A0A0A0',
+                'public' => 'color:#FFFFFF',
+                'protected' => 'color:#FFFFFF',
+                'private' => 'color:#FFFFFF',
+                'meta' => 'color:#FFFFFF',
+                'key' => 'color:#BCD42A',
+                'index' => 'color:#ef7c61',
+            ];
+            $this->htmlDumper->setStyles($styles);
+        }
+
+        return $this->htmlDumper;
+    }
+
+    /**
+     * Format the given value into a human readable string.
+     *
+     * @param  mixed $value
+     * @return string
+     */
+    public function dump($value)
+    {
+        $dumper = $this->getDumper();
+
+        if ($dumper) {
+            // re-use the same DumpOutput instance, so it won't re-render the global styles/scripts on each dump.
+            // exclude verbose information (e.g. exception stack traces)
+            if (class_exists('Symfony\Component\VarDumper\Caster\Caster')) {
+                $cloneVar = $this->getCloner()->cloneVar($value, Caster::EXCLUDE_VERBOSE);
+                // Symfony VarDumper 2.6 Caster class dont exist.
+            } else {
+                $cloneVar = $this->getCloner()->cloneVar($value);
+            }
+
+            $dumper->dump(
+                $cloneVar,
+                $this->htmlDumperOutput
+            );
+
+            $output = $this->htmlDumperOutput->getOutput();
+            $this->htmlDumperOutput->clear();
+
+            return $output;
+        }
+
+        return htmlspecialchars(print_r($value, true));
+    }
+
+    /**
+     * Format the args of the given Frame as a human readable html string
+     *
+     * @param  Frame $frame
+     * @return string the rendered html
+     */
+    public function dumpArgs(Frame $frame)
+    {
+        // we support frame args only when the optional dumper is available
+        if (!$this->getDumper()) {
+            return '';
+        }
+
+        $html = '';
+        $numFrames = count($frame->getArgs());
+
+        if ($numFrames > 0) {
+            $html = '<ol class="linenums">';
+            foreach ($frame->getArgs() as $j => $frameArg) {
+                $html .= '<li>'. $this->dump($frameArg) .'</li>';
+            }
+            $html .= '</ol>';
+        }
+
+        return $html;
+    }
+
+    /**
+     * Convert a string to a slug version of itself
+     *
+     * @param  string $original
+     * @return string
+     */
+    public function slug($original)
+    {
+        $slug = str_replace(" ", "-", $original);
+        $slug = preg_replace('/[^\w\d\-\_]/i', '', $slug);
+        return strtolower($slug);
+    }
+
+    /**
+     * Given a template path, render it within its own scope. This
+     * method also accepts an array of additional variables to be
+     * passed to the template.
+     *
+     * @param string $template
+     */
+    public function render($template, array $additionalVariables = null)
+    {
+        $variables = $this->getVariables();
+
+        // Pass the helper to the template:
+        $variables["tpl"] = $this;
+
+        if ($additionalVariables !== null) {
+            $variables = array_replace($variables, $additionalVariables);
+        }
+
+        call_user_func(function () {
+            extract(func_get_arg(1));
+            require func_get_arg(0);
+        }, $template, $variables);
+    }
+
+    /**
+     * Sets the variables to be passed to all templates rendered
+     * by this template helper.
+     */
+    public function setVariables(array $variables)
+    {
+        $this->variables = $variables;
+    }
+
+    /**
+     * Sets a single template variable, by its name:
+     *
+     * @param string $variableName
+     * @param mixed  $variableValue
+     */
+    public function setVariable($variableName, $variableValue)
+    {
+        $this->variables[$variableName] = $variableValue;
+    }
+
+    /**
+     * Gets a single template variable, by its name, or
+     * $defaultValue if the variable does not exist
+     *
+     * @param  string $variableName
+     * @param  mixed  $defaultValue
+     * @return mixed
+     */
+    public function getVariable($variableName, $defaultValue = null)
+    {
+        return isset($this->variables[$variableName]) ?
+            $this->variables[$variableName] : $defaultValue;
+    }
+
+    /**
+     * Unsets a single template variable, by its name
+     *
+     * @param string $variableName
+     */
+    public function delVariable($variableName)
+    {
+        unset($this->variables[$variableName]);
+    }
+
+    /**
+     * Returns all variables for this helper
+     *
+     * @return array
+     */
+    public function getVariables()
+    {
+        return $this->variables;
+    }
+
+    /**
+     * Set the cloner used for dumping variables.
+     *
+     * @param AbstractCloner $cloner
+     */
+    public function setCloner($cloner)
+    {
+        $this->cloner = $cloner;
+    }
+
+    /**
+     * Get the cloner used for dumping variables.
+     *
+     * @return AbstractCloner
+     */
+    public function getCloner()
+    {
+        if (!$this->cloner) {
+            $this->cloner = new VarCloner();
+        }
+        return $this->cloner;
+    }
+
+    /**
+     * Set the application root path.
+     *
+     * @param string $applicationRootPath
+     */
+    public function setApplicationRootPath($applicationRootPath)
+    {
+        $this->applicationRootPath = $applicationRootPath;
+    }
+
+    /**
+     * Return the application root path.
+     *
+     * @return string
+     */
+    public function getApplicationRootPath()
+    {
+        return $this->applicationRootPath;
+    }
+}