From 8df3db566a3a937b45ebf11adb90d265e6f5e2d4 Mon Sep 17 00:00:00 2001
From: Andreas Baumann <mail@andreasbaumann.cc>
Date: Sun, 17 Nov 2019 20:45:02 +0100
Subject: initial checking of customized version 1.0rc9

---
 .../guzzle/src/Guzzle/Iterator/FilterIterator.php  | 36 ++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 vendor/guzzle/guzzle/src/Guzzle/Iterator/FilterIterator.php

(limited to 'vendor/guzzle/guzzle/src/Guzzle/Iterator/FilterIterator.php')

diff --git a/vendor/guzzle/guzzle/src/Guzzle/Iterator/FilterIterator.php b/vendor/guzzle/guzzle/src/Guzzle/Iterator/FilterIterator.php
new file mode 100644
index 0000000..b103367
--- /dev/null
+++ b/vendor/guzzle/guzzle/src/Guzzle/Iterator/FilterIterator.php
@@ -0,0 +1,36 @@
+<?php
+
+namespace Guzzle\Iterator;
+
+use Guzzle\Common\Exception\InvalidArgumentException;
+
+/**
+ * Filters values using a callback
+ *
+ * Used when PHP 5.4's {@see \CallbackFilterIterator} is not available
+ */
+class FilterIterator extends \FilterIterator
+{
+    /** @var mixed Callback used for filtering */
+    protected $callback;
+
+    /**
+     * @param \Iterator      $iterator Traversable iterator
+     * @param array|\Closure $callback Callback used for filtering. Return true to keep or false to filter.
+     *
+     * @throws InvalidArgumentException if the callback if not callable
+     */
+    public function __construct(\Iterator $iterator, $callback)
+    {
+        parent::__construct($iterator);
+        if (!is_callable($callback)) {
+            throw new InvalidArgumentException('The callback must be callable');
+        }
+        $this->callback = $callback;
+    }
+
+    public function accept()
+    {
+        return call_user_func($this->callback, $this->current());
+    }
+}
-- 
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