metadatabuilder.php

<?php
 
namespace Bitrix\Main\PhoneNumber\Tools;
 
class MetadataBuilder
{
    protected $fileName;
    protected $parser;
 
    public function __construct($fileName)
    {
        if(!\Bitrix\Main\IO\File::isFileExists($fileName))
            throw new \Bitrix\Main\ArgumentException('File is not found');
 
        $this->fileName = $fileName;
        $this->parser = new \Bitrix\Main\PhoneNumber\Tools\GoogleMetadata\Root();
    }
 
    public function build()
    {
        $xmlReader = new \XMLReader();
        if ($xmlReader->open('file://'.$this->fileName) === false)
        {
            throw new \Bitrix\Main\SystemException("XMLReader could not open URI");
        }
 
        // looking for the root element
        while ($xmlReader->read() && $xmlReader->nodeType !== \XMLReader::ELEMENT) ;
 
        $parsedData = $this->parser->parseElement($xmlReader, '/');
        $xmlReader->close();
        unset($xmlReader);
        return $parsedData['ROOT']['territory'];
    }
 
}