From 6099df20c25093a8e9c516b889f1587cfcda7969 Mon Sep 17 00:00:00 2001
From: shap <sanatarchuk@gmail.com>
Date: Thu, 20 Sep 2018 15:59:06 +0300
Subject: [PATCH 1/2] the fix for the boolean uppercase-value attribute
 validation

---
 src/Offer/AOffer.php | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/src/Offer/AOffer.php b/src/Offer/AOffer.php
index 8140d7d..bdbcb15 100644
--- a/src/Offer/AOffer.php
+++ b/src/Offer/AOffer.php
@@ -204,15 +204,15 @@ public function isValid()
             $this->addError("Offer: incorrect value in attribute 'categoryId'");
         }
 
-        if ($this->store !== null && $this->store !== 'true' && $this->store !== 'false') {
+        if ($this->store !== null && !$this->isValidBoolean($this->store)) {
             $this->addError("Offer: incorrect value in attribute 'store'");
         }
 
-        if ($this->pickup !== null && $this->pickup !== 'true' && $this->pickup !== 'false') {
+        if ($this->pickup !== null && !$this->isValidBoolean($this->pickup)) {
             $this->addError("Offer: incorrect value in attribute 'pickup'");
         }
 
-        if ($this->delivery !== null && $this->delivery !== 'true' && $this->delivery !== 'false') {
+        if ($this->delivery !== null && !$this->isValidBoolean($this->delivery)) {
             $this->addError("Offer: incorrect value in attribute 'delivery'");
         }
 
@@ -239,6 +239,12 @@ public function isValid()
         return empty($this->errors) && $subIsValid;
     }
 
+    private function isValidBoolean($attribute)
+    {
+        $lc_attr = lcfirst($attribute);
+        return $lc_attr === 'true' || $lc_attr === 'false';
+    }
+
     /**
      * @return array
      */

From 3b57e29a67be3f68f07f42c5afc1adf00f5b1c8b Mon Sep 17 00:00:00 2001
From: shap <sanatarchuk@gmail.com>
Date: Mon, 6 May 2019 11:58:27 +0300
Subject: [PATCH 2/2] node value "0" should not be replaced with "null"

---
 src/YML.php | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/YML.php b/src/YML.php
index df898fe..ff1c293 100644
--- a/src/YML.php
+++ b/src/YML.php
@@ -194,7 +194,8 @@ protected function parseNode($basePath)
                 }
             }
         }
-        $value = trim($value) ?: null;
+        $trimmedValue = trim($value);
+        $value = '' !== $trimmedValue ? $trimmedValue : null;
 
         return ['name' => $name, 'attributes' => $attributes, 'value' => $value, 'nodes' => $nodes];
     }