nabble/ajde

<?php

class Ajde_Template_Parser_Xhtml extends Ajde_Template_Parser
{
    protected $_defaultNS = null;
    protected $_acNS = null;
    protected $_avNS = null;

    public function parse()
    {
        // Get the XHTML
        $xhtml = $this->_getContents();
        $doc = new DOMDocument();
        $doc->registerNodeClass('DOMElement', 'Ajde_Template_Parser_Xhtml_Element');
        $doc->preserveWhiteSpace = false;
        $doc->formatOutput = true;
        try {
            $doc->loadXML($xhtml);
        } catch (ErrorException $e) {
            // TODO:
            //return false;
            throw new Ajde_Exception('Xhtml Parser error: '.$e->getMessage());
        }

        // Get the root element
        /* @var $root DOMNode */
        $root = $doc->documentElement;
        $this->_defaultNS = $root->lookupNamespaceURI(null);
        $this->_acNS = $root->lookupNamespaceURI(Ajde_Component::AC_XMLNS);
        $this->_avNS = $root->lookupNamespaceURI(Ajde_Component::AV_XMLNS);

        // Ajde_Component processing
        $processed = $this->_process($root);

        // Return the inner XML of root element (exclusive)
        $xml = $this->innerXml($processed);

        // Break out the CDATA
        $return = $this->_breakOutCdata($xml);

        return $return;
    }

    protected function _process(DOMElement $root)
    {
        foreach ($root->getElementsByTagNameNS($this->_acNS, '*') as $element) {
            /* @var $element Ajde_Template_Parser_Xhtml_Element */
            if ($element->inACNameSpace()) {
                $element->processComponent($this);
            } elseif ($element->inAVNameSpace()) {
                $element->processVariable($this);
            }
        }

        return $root;
    }

    protected function _breakOutCdata($xml)
    {
        $patterns = [
            '%<a[cv]:.+?<!\[CDATA\[%',
            '%\]\]>.*</a[cv]:.+?>%',
        ];
        $return = preg_replace($patterns, '', $xml);

        return $return;
    }

    public function innerXml(DOMElement $node)
    {
        $return = '';
        foreach ($node->childNodes as $element) {
            $return .= $element->ownerDocument->saveXML($element);
        }

        return $return;
    }
}