From 6fd89047549f76066fbc361ffc05a9d77cedac1d Mon Sep 17 00:00:00 2001
From: Caleb Mazalevskis <maikuolan@gmail.com>
Date: Mon, 14 Oct 2024 15:41:52 +0800
Subject: [PATCH] Stricter typing.

---
 Changelog.txt      |  2 ++
 src/Aggregator.php | 17 +++++++++--------
 2 files changed, 11 insertions(+), 8 deletions(-)

diff --git a/Changelog.txt b/Changelog.txt
index affd466..ed5fd69 100644
--- a/Changelog.txt
+++ b/Changelog.txt
@@ -11,6 +11,8 @@ Versioning guidelines for SemVer can be found at: https://semver.org/
 
 - [2024.08.02; Maikuolan]: Fixed some typos.
 
+- [2024.10.14]: Strictened typing for the aggregator.
+
 === Version/Release 1.3.4 ===
 PATCH RELEASE.
 
diff --git a/src/Aggregator.php b/src/Aggregator.php
index 5027050..99d769b 100644
--- a/src/Aggregator.php
+++ b/src/Aggregator.php
@@ -1,6 +1,6 @@
 <?php
 /**
- * Aggregator v1.3.5 (last modified: 2024.06.25).
+ * Aggregator v1.3.5 (last modified: 2024.10.14).
  * @link https://github.com/CIDRAM/Aggregator
  *
  * Description: A stand-alone class implementation of the IPv4+IPv6 IP+CIDR
@@ -107,13 +107,16 @@ public function __construct($Mode = 0)
     /**
      * Aggregate it!
      *
-     * @param string|array $In The IPs/CIDRs/netmasks to be aggregated. Should
-     *          either be a string, with entries separated by lines, or an
-     *          array with an entry to each element.
+     * @param string $In The IPs/CIDRs/netmasks to be aggregated. Entries separated by lines.
      * @return string The aggregated data.
      */
     public function aggregate($In)
     {
+        /** Guard. */
+        if (!is_string($In)) {
+            return '';
+        }
+
         $Begin = microtime(true);
         $this->Output = $In;
         $this->stripInvalidCharactersAndSort($this->Output);
@@ -173,14 +176,12 @@ private function constructTables()
     /**
      * Strips invalid characters from lines and sorts entries.
      *
-     * @param string|array
+     * @param string
      * @return void
      */
     private function stripInvalidCharactersAndSort(&$In)
     {
-        if (!is_array($In)) {
-            $In = explode("\n", strtolower(trim(str_replace("\r", '', $In))));
-        }
+        $In = explode("\n", strtolower(trim(str_replace("\r", '', $In))));
         $InCount = count($In);
         if (isset($this->callbacks['newParse']) && is_callable($this->callbacks['newParse'])) {
             $this->callbacks['newParse']($InCount);