From 581944b3cf0f58c4f8c35bdf2aa41fdf9fd2b550 Mon Sep 17 00:00:00 2001
From: Dennis Eichhorn <spl1nes.com@googlemail.com>
Date: Tue, 16 Jan 2018 18:45:53 +0100
Subject: [PATCH] Simplify flag checks

---
 README.md                  |  2 +-
 Stdlib/Base/Enum.php       | 16 ++++++++++++++++
 System/File/Local/File.php | 12 ++++++------
 3 files changed, 23 insertions(+), 7 deletions(-)

diff --git a/README.md b/README.md
index ee67105f9..3c5784431 100644
--- a/README.md
+++ b/README.md
@@ -25,7 +25,7 @@ Features this framework provides are:
 * Request/Response management
 * Math (e.g. matrix, forecasting, optimization, geometry, stochastics, etc.)
 * Module management
-* Uri 
+* Uri
 * Utils (e.g. barcodes, comporession, unit converter, jobqueue, git, etc.)
 * Value validation
 * View management
diff --git a/Stdlib/Base/Enum.php b/Stdlib/Base/Enum.php
index 7bc7bdf0c..64146c552 100644
--- a/Stdlib/Base/Enum.php
+++ b/Stdlib/Base/Enum.php
@@ -138,4 +138,20 @@ abstract class Enum
         return count(self::getConstants());
     }
 
+    /**
+     * Check if flag is set
+     *
+     * This only works for binary flags.
+     *
+     * @param int $flags Set flags
+     * @param int $checkForFlag Check if this flag is part of the set flags
+     *
+     * @return bool
+     *
+     * @since  1.0.0
+     */
+    public static function hasFlag(int $flags, int $checkForFlag) : bool
+    {
+        return ($flags & $checkForFlag) === $checkForFlag;
+    }
 }
diff --git a/System/File/Local/File.php b/System/File/Local/File.php
index 067aa1060..a634a3c14 100644
--- a/System/File/Local/File.php
+++ b/System/File/Local/File.php
@@ -67,14 +67,14 @@ class File extends FileAbstract implements FileInterface
         $exists = file_exists($path);
 
         if (
-            (($mode & ContentPutMode::APPEND) === ContentPutMode::APPEND && $exists)
-            || (($mode & ContentPutMode::PREPEND) === ContentPutMode::PREPEND && $exists)
-            || (($mode & ContentPutMode::REPLACE) === ContentPutMode::REPLACE && $exists)
-            || (!$exists && ($mode & ContentPutMode::CREATE) === ContentPutMode::CREATE)
+            (ContentPutMode::hasFlag($mode, ContentPutMode::APPEND) && $exists)
+            || (ContentPutMode::hasFlag($mode, ContentPutMode::PREPEND) && $exists)
+            || (ContentPutMode::hasFlag($mode, ContentPutMode::REPLACE) && $exists)
+            || (!$exists && ContentPutMode::hasFlag($mode, ContentPutMode::CREATE))
         ) {
-            if (($mode & ContentPutMode::APPEND) === ContentPutMode::APPEND && $exists) {
+            if (ContentPutMode::hasFlag($mode, ContentPutMode::APPEND) && $exists) {
                 file_put_contents($path, file_get_contents($path) . $content);
-            } elseif (($mode & ContentPutMode::PREPEND) === ContentPutMode::PREPEND && $exists) {
+            } elseif (ContentPutMode::hasFlag($mode, ContentPutMode::PREPEND) && $exists) {
                 file_put_contents($path, $content . file_get_contents($path));
             } else {
                 if (!Directory::exists(dirname($path))) {