/**
* Process DOM node.
*
* @param DOMDocument $doc Document node.
* @param DOMElement $node Element node.
*
* @return string The plaintext representation.
*/
protected function _node($doc, $node)
{
$out = '';
if (!empty($this->_params['nestingLimit']) && $this->_nestingLevel > $this->_params['nestingLimit']) {
$this->_nestingLevel--;
return;
}
$this->_nestingLevel++;
if ($node->hasChildNodes()) {
foreach ($node->childNodes as $child) {
if ($this->_params['callback'] && ($txt = call_user_func($this->_params['callback'], $doc, $child)) !== null) {
$out .= $txt;
continue;
}
if ($child instanceof DOMElement) {
switch (Horde_String::lower($child->tagName)) {
case 'h1':
case 'h2':
case 'h3':
$out .= "\n\n" . strtoupper($this->_node($doc, $child)) . "\n\n";
break;
case 'h4':
case 'h5':
case 'h6':
$out .= "\n\n" . ucwords($this->_node($doc, $child)) . "\n\n";
break;
case 'b':
case 'strong':
$out .= strtoupper($this->_node($doc, $child));
break;
case 'u':
$out .= '_' . $this->_node($doc, $child) . '_';
break;
case 'em':
case 'i':
$out .= '/' . $this->_node($doc, $child) . '/';
break;
case 'hr':
$out .= "\n-------------------------\n";
break;
case 'ol':
case 'ul':
case 'dl':
++$this->_indent;
$out .= "\n" . $this->_node($doc, $child) . "\n";
--$this->_indent;
break;
case 'p':
if ($tmp = $this->_node($doc, $child)) {
if (!strspn(substr($out, -2), "\n")) {
$out .= "\n";
}
if (strlen(trim($tmp))) {
$out .= $tmp . "\n";
}
}
break;
case 'table':
if ($tmp = $this->_node($doc, $child)) {
$out .= "\n\n" . $tmp . "\n\n";
}
break;
case 'tr':
$out .= "\n " . trim($this->_node($doc, $child));
break;
case 'th':
$out .= strtoupper($this->_node($doc, $child)) . " \t";
break;
case 'td':
$out .= $this->_node($doc, $child) . " \t";
break;
case 'li':
case 'dd':
case 'dt':
$out .= "\n" . str_repeat(' ', $this->_indent) . '* ' . $this->_node($doc, $child);
break;
case 'a':
$out .= $this->_node($doc, $child) . $this->_buildLinkList($doc, $child);
break;
case 'blockquote':
$tmp = trim(preg_replace('/\\s*\\n{3,}/', "\n\n", $this->_node($doc, $child)));
if (class_exists('Horde_Text_Flowed')) {
$flowed = new Horde_Text_Flowed($tmp, $this->_params['charset']);
$flowed->setMaxLength($this->_params['width']);
$flowed->setOptLength($this->_params['width']);
$tmp = $flowed->toFlowed(true);
}
if (!strspn(substr($out, -1), " \r\n\t")) {
$out .= "\n";
}
$out .= "\n" . rtrim($tmp) . "\n\n";
break;
case 'div':
$out .= $this->_node($doc, $child) . "\n";
break;
case 'br':
$out .= "\n";
break;
default:
$out .= $this->_node($doc, $child);
break;
}
} elseif ($child instanceof DOMText) {
$tmp = $child->textContent;
$out .= strspn(substr($out, -1), " \r\n\t") ? ltrim($child->textContent) : $child->textContent;
}
}
}
if (!empty($this->_params['nestingLimit'])) {
$this->_nestingLevel--;
}
return $out;
}
