From d99c1c499e301dce0acffa1990154fbdf009545a Mon Sep 17 00:00:00 2001
From: Ignace Nyamagana Butera <nyamsprod@gmail.com>
Date: Tue, 6 Feb 2018 09:13:57 +0100
Subject: [PATCH] bug fix PHP7.2 bug see #279

---
 src/Reader.php | 30 ++++++++++++++++++++++++++----
 1 file changed, 26 insertions(+), 4 deletions(-)

diff --git a/src/Reader.php b/src/Reader.php
index ad51c6b7..6f85f8cc 100644
--- a/src/Reader.php
+++ b/src/Reader.php
@@ -316,10 +316,7 @@ protected function isValidKey($value)
      */
     protected function getRow($offset)
     {
-        $fileObj = $this->getIterator();
-        $iterator = new LimitIterator($fileObj, $offset, 1);
-        $iterator->rewind();
-        $row = $iterator->current();
+        $row = $this->seekRow($offset);
         if (empty($row)) {
             throw new InvalidArgumentException('the specified row does not exist or is empty');
         }
@@ -336,4 +333,29 @@ protected function getRow($offset)
 
         return $row;
     }
+
+    /**
+     * Returns the row at a given offset
+     *
+     * @param int $offset
+     *
+     * @return mixed
+     */
+    protected function seekRow($offset)
+    {
+        $stream = $this->getIterator();
+        //Workaround for SplFileObject::seek bug in PHP7.2+ see https://bugs.php.net/bug.php?id=75917
+        if (PHP_VERSION_ID > 70200 && !$stream instanceof StreamIterator) {
+            while ($offset !== $stream->key() && $stream->valid()) {
+                $stream->next();
+            }
+
+            return $stream->current();
+        }
+
+        $iterator = new LimitIterator($stream, $offset, 1);
+        $iterator->rewind();
+
+        return $iterator->current();
+    }
 }