Katten\Purge\PurgeHtmlCrawler

Complexity

Total Complexity

2

Size/Duplication

Total Lines	30
Duplicated Lines	0 %

Coupling/Cohesion

Components	0
Dependencies	1

Importance

Changes

0

1 Method

Rating	Name	Duplication	Size	Complexity
A	findFirstInstance()	0	14	2

<?php



namespace Katten\Purge;



use Symfony\Component\DomCrawler\Crawler;
use Symfony\Component\CssSelector\CssSelector;
use Symfony\Component\CssSelector\Exception\ParseException;



class PurgeHtmlCrawler extends Crawler {


    /**
     * Modify the xPath query provided by CssSelector to 
     * find the first instance of a given element, this reduces
     * search times compared to filter which returns a whole collection
     * 
     * @param string $selector
     *      A css selector
     * 
     * @return Crawler
     *      The first instance of selected element
     */ 
    public function findFirstInstance($selector) {

        try {
    
            $xPath = CssSelector::toXPath($selector);
            $xPath = '(' . $xPath . ')[1]';
        
            return $this->filterXPath($xPath);
        }
        catch (ParseException $e) {
            
            throw new ParseException("{$e->getMessage()} Invalid Selector: $selector");
        }
    }

}