1 files changed, 47 insertions, 0 deletions
diff --git a/vendor/jfcherng/php-diff/src/Utility/Arr.php b/vendor/jfcherng/php-diff/src/Utility/Arr.php
new file mode 100644
index 0000000..9283e30
--- /dev/null
+++ b/vendor/jfcherng/php-diff/src/Utility/Arr.php
@@ -0,0 +1,47 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Jfcherng\Diff\Utility;
+
+final class Arr
+{
+    /**
+     * Get a partial array slice with start/end indexes.
+     *
+     * @param array    $array the array
+     * @param int      $start the starting index (negative = count from backward)
+     * @param null|int $end   the ending index (negative = count from backward)
+     *                        if is null, it returns a slice from $start to the end
+     *
+     * @return array array of all of the lines between the specified range
+     */
+    public static function getPartialByIndex(array $array, int $start = 0, ?int $end = null): array
+    {
+        $count = \count($array);
+
+        // make $end set
+        $end = $end ?? $count;
+
+        // make $start non-negative
+        if ($start < 0) {
+            $start += $count;
+
+            if ($start < 0) {
+                $start = 0;
+            }
+        }
+
+        // make $end non-negative
+        if ($end < 0) {
+            $end += $count;
+
+            if ($end < 0) {
+                $end = 0;
+            }
+        }
+
+        // make the length non-negative
+        return \array_slice($array, $start, \max(0, $end - $start));
+    }
+}