mirror of
https://github.com/silverstripe/silverstripe-framework
synced 2024-10-22 14:05:37 +02:00
57 lines
1.8 KiB
PHP
57 lines
1.8 KiB
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;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|