fix(CFNumber): locale insensitive float format

CFNumber must output floats with dot as decimal separator
This change forces a 10 digits limit after the decimal separator

Signed-off-by: Thierry Bugier <tbugier@teclib.com>

Author: btry

composer.json

@@ -8,7 +8,8 @@
     "require": {
         "php": "^7.4 || ^8.0",
         "ext-dom": "*",
-        "ext-libxml": "*"
+        "ext-libxml": "*",
+        "ext-intl": "*"
     },
     "authors": [
         {

src/CFPropertyList/CFNumber.php

@@ -68,7 +68,13 @@ public function toXML(DOMDocument $doc, $nodeName = "")
             $this->value = intval($this->value);
             $ret = 'integer';
         }
-        return parent::toXML($doc, $ret);
+        $formatter = new \NumberFormatter('en_US', \NumberFormatter::DECIMAL);
+        $formatter->setAttribute(\NumberFormatter::MAX_FRACTION_DIGITS, 10);
+        $formatter->setAttribute(\NumberFormatter::GROUPING_USED, false);
+        $text = $doc->createTextNode($formatter->format($this->value));
+        $node = $doc->createElement($ret);
+        $node->appendChild($text);
+        return $node;
     }
 
   /**