html mapping.
*/
class CRM_Afform_ArrayHtml {
const DEFAULT_TAG = 'div';
/**
* @param array $array
* Ex: ['#tag' => 'div', 'class' => 'greeting', '#children' => ['Hello world']]
* @return string
* Ex: 'Hello world
'
*/
public function convertArrayToHtml($array) {
$tag = empty($array['#tag']) ? self::DEFAULT_TAG : $array['#tag'];
unset($array['#tag']);
$children = empty($array['#children']) ? self::DEFAULT_TAG : $array['#children'];
unset($array['#children']);
$buf = '<' . $tag;
foreach ($array as $attrName => $attrValue) {
if ($attrName{0} === '#') {
continue;
}
if (!preg_match('/^[a-zA-Z0-9\-]+$/', $attrName)) {
throw new \RuntimeException("Malformed HTML attribute");
}
if (is_string($attrValue)) {
$buf .= sprintf(' %s="%s"', $attrName, htmlentities($attrValue)); // FIXME attribute encoding
}
elseif (is_array($attrValue) && $this->allowStructuredAttribute($tag, $attrName)) {
$buf .= sprintf(' %s="%s"', $attrName, htmlentities(json_encode($attrValue))); // FIXME attribute encoding
}
}
$buf .= '>';
foreach ($children as $child) {
if (is_string($child)) {
$buf .= htmlentities($child);
}
elseif (is_array($child)) {
$buf .= $this->convertArrayToHtml($child);
}
}
$buf .= '';
return $buf;
}
/**
* @param string $html
* Ex: 'Hello world
'
* @return array
* Ex: ['#tag' => 'div', 'class' => 'greeting', '#children' => ['Hello world']]
*/
public function convertHtmlToArray($html) {
$doc = new DOMDocument();
$doc->loadHTML("$html");
// FIXME: Valid expected number of child nodes
foreach ($doc->childNodes as $htmlNode) {
if ($htmlNode instanceof DOMElement && $htmlNode->tagName === 'html') {
return $this->convertNodeToArray($htmlNode->firstChild->firstChild);
}
}
return NULL;
}
/**
* @param \DOMNode $node
* @return array|string
*/
public function convertNodeToArray($node) {
if ($node instanceof DOMElement) {
$arr = ['#tag' => $node->tagName];
foreach ($node->attributes as $attribute) {
$txt = $attribute->textContent;
if ($txt{0} === '{' && $txt{1} !== '{' && $this->allowStructuredAttribute($node->tagName, $attribute->name)) {
$arr[$attribute->name] = sprintf('PARSE-ME(%s)', $txt);
}
else {
$arr[$attribute->name] = $txt;
}
}
foreach ($node->childNodes as $childNode) {
$arr['#children'][] = $this->convertNodeToArray($childNode);
}
return $arr;
}
elseif ($node instanceof DOMText) {
return $node->textContent;
}
else {
throw new \RuntimeException("Unrecognized DOM node");
}
}
public function allowStructuredAttribute($tag, $attr) {
// FIXME: use whitelist of allowed angular directives
return FALSE;
}
}