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

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+<?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);
+    }
+}