Upgrade framework

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;
+    }
+}