/**
* Merge another parent node into this node.
* @param ParentNode $node
*/
public function mergeNode(ParentNode $node)
{
$child = $node->head;
while ($child) {
$next = $child->next;
$this->appendChild($child);
$child = $next;
}
foreach ($node->getChildProperties() as $name => $value) {
$this->{$name} = $value;
}
}
/**
* Parse an opening or closing tag. If a closing tag completes an opening tag then add the node
* to the tree.
*
* @param string $tag;
*/
private function parseTag($tag)
{
/*
* /* Todo: currently only supports single attribute
* * Only supports single attributes, perhaps multiple attributes will be added in the
* * future
*/
$closer = $attribute = $hasAttribute = false;
if ($tag[0] !== '/') {
// Opening tag, get the name and attribute
$name = strtok($tag, '=');
$attribute = strtok('');
$hasAttribute = $attribute !== false;
} else {
if (mb_strlen($tag) === 1) {
// Closing tag with no name, treat as plain text
$this->node->curText->text .= '[/]';
return;
} else {
// Closing tag
$name = mb_substr($tag, 1);
$closer = true;
}
}
// Check that an opener exists
if ($closer && isset($this->styles[$name])) {
if (!empty($k = array_keys($this->nameStack, $name))) {
if (isset($this->invalids[$name]) && $this->invalids[$name] > 0) {
--$this->invalids[$name];
$this->node->curText->text .= '[' . $tag . ']';
return;
}
end($k);
$idx = current($k);
// Attempt to close the node.
/** @noinspection PhpUndefinedMethodInspection */
$this->nodeStack[$idx][0]->close();
// Remove the rest of the stack
array_splice($this->nodeStack, $idx);
array_splice($this->nameStack, $idx);
$idx1 = $idx - 1;
$this->node = $this->nodeStack[$idx1][0];
$this->nodeStack[$idx1][1] = array_intersect_key($this->invalids, $this->nodeStack[$idx1][1]);
$this->invalids =& $this->nodeStack[$idx1][1];
} else {
// No opener is in the stack. Treat as plain text and move on.
$this->node->curText->text .= '[' . $tag . ']';
}
} else {
if (isset($this->styles[$name][$hasAttribute])) {
if (isset($this->invalids[$name])) {
$this->addError('Invalid Tag Placement', '[' . $tag . '] cannot be used within ' . $this->node->getStackInput());
++$this->invalids[$name];
$this->node->curText->text .= '[' . $tag . ']';
return;
}
if ($this->styles[$name][$hasAttribute]->parseContent) {
$this->nameStack[] = $name;
$this->nodeStack[] = [$this->node->addElement($this, $this->styles[$name][$hasAttribute], '[' . $tag . ']', $attribute), array_merge($this->invalids, array_fill_keys($this->styles[$name][$hasAttribute]->noTags, 0))];
$idx = count($this->nodeStack) - 1;
$this->node = $this->nodeStack[$idx][0];
$this->invalids =& $this->nodeStack[$idx][1];
} else {
$this->parseAsText($this->node->addElement($this, $this->styles[$name][$hasAttribute], '[' . $tag . ']', $attribute), $name);
}
} else {
// All this work and it isn't actually a tag.
$this->node->curText->text .= '[' . $tag . ']';
}
}
}
/**
* @inheritdoc
*/
public function getStackInput()
{
return $this->parent->getStackInput() . $this->inputs[0];
}