File Source for CSSContentParser.php

<?php
/**
* CSSContentParser enables parsing & assertion running of HTML content via CSS selectors.
*
* It works by converting the content to XHTML using tidy, rewriting the CSS selectors as XPath queries, and executing
* those using SimpeXML.
*
* It was built to facilitate testing using PHPUnit and contains a number of assert methods that will throw PHPUnit
* assertion exception when applicable.
*/
class CSSContentParser extends Object {
protected $simpleXML = null;
function __construct($content) {
$CLI_content = escapeshellarg($content);
$tidy = `echo $CLI_content | tidy -n -q -utf8 -asxhtml`;
$tidy = str_replace('xmlns="http://www.w3.org/1999/xhtml"','',$tidy);
$tidy = str_replace(' ','',$tidy);
$this->simpleXML = new SimpleXMLElement($tidy);
}
/**
* Returns a number of SimpleXML elements that match the given CSS selector.
* Currently the selector engine only supports querying by tag, id, and classs
*/
function getBySelector($selector) {
$xpath = $this->selector2xpath($selector);
return $this->simpleXML->xpath($xpath);
}
/**
* Converts a CSS selector into an equivalent xpath expression.
* Currently the selector engine only supports querying by tag, id, and classs
*/
function selector2xpath($selector) {
$parts = preg_split('/\\s+/', $selector);
$xpath = "";
foreach($parts as $part) {
if(preg_match('/^([A-Za-z][A-Za-z0-9]*)/', $part, $matches)) {
$xpath .= "//$matches[1]";
} else {
$xpath .= "//*";
}
$xfilters = array();
if(preg_match('/#([^#.\[]+)/', $part, $matches)) {
$xfilters[] = "@id='$matches[1]'";
}
if(preg_match('/\.([^#.\[]+)/', $part, $matches)) {
$xfilters[] = "contains(@class,'$matches[1]')";
}
if($xfilters) $xpath .= '[' . implode(',', $xfilters) . ']';
}
return $xpath;
}
}

Source for file CSSContentParser.php