protected function processStartTag(Tag $tag)
{
$tagName = $tag->getName();
$tagConfig = $this->tagsConfig[$tagName];
if ($this->cntTotal[$tagName] >= $tagConfig['tagLimit']) {
$this->logger->err('Tag limit exceeded', array('tag' => $tag, 'tagName' => $tagName, 'tagLimit' => $tagConfig['tagLimit']));
$tag->invalidate();
return;
}
if (!$this->filterTag($tag)) {
$tag->invalidate();
return;
}
if ($this->fosterParent($tag) || $this->closeParent($tag) || $this->closeAncestor($tag)) {
return;
}
if ($this->cntOpen[$tagName] >= $tagConfig['nestingLimit']) {
$this->logger->err('Nesting limit exceeded', array('tag' => $tag, 'tagName' => $tagName, 'nestingLimit' => $tagConfig['nestingLimit']));
$tag->invalidate();
return;
}
if (!$this->tagIsAllowed($tagName)) {
$msg = 'Tag is not allowed in this context';
$context = array('tag' => $tag, 'tagName' => $tagName);
if ($tag->getLen() > 0) {
$this->logger->warn($msg, $context);
} else {
$this->logger->debug($msg, $context);
}
$tag->invalidate();
return;
}
if ($this->requireAncestor($tag)) {
$tag->invalidate();
return;
}
if ($tag->getFlags() & self::RULE_AUTO_CLOSE && !$tag->getEndTag() && !$this->isFollowedByClosingTag($tag)) {
$newTag = new Tag(Tag::SELF_CLOSING_TAG, $tagName, $tag->getPos(), $tag->getLen());
$newTag->setAttributes($tag->getAttributes());
$newTag->setFlags($tag->getFlags());
$tag = $newTag;
}
if ($tag->getFlags() & self::RULE_TRIM_FIRST_LINE && !$tag->getEndTag() && \substr($this->text, $tag->getPos() + $tag->getLen(), 1) === "\n") {
$this->addIgnoreTag($tag->getPos() + $tag->getLen(), 1);
}
$this->outputTag($tag);
$this->pushContext($tag);
$this->createChild($tag);
}
/**
* @testdox setAttributes() removes all other attributes
*/
public function testSetAttributesNuke()
{
$tag = new Tag(Tag::START_TAG, 'X', 0, 0);
$tag->setAttribute('x', 'x');
$tag->setAttributes(['foo' => 'bar', 'baz' => 'quux']);
$this->assertSame(['foo' => 'bar', 'baz' => 'quux'], $tag->getAttributes());
}
/**
* Process given start tag (including self-closing tags) at current position
*
* @param Tag $tag Start tag (including self-closing)
* @return void
*/
protected function processStartTag(Tag $tag)
{
$tagName = $tag->getName();
$tagConfig = $this->tagsConfig[$tagName];
// 1. Check that this tag has not reached its global limit tagLimit
// 2. Execute this tag's filterChain, which will filter/validate its attributes
// 3. Apply closeParent, closeAncestor and fosterParent rules
// 4. Check for nestingLimit
// 5. Apply requireAncestor rules
//
// This order ensures that the tag is valid and within the set limits before we attempt to
// close parents or ancestors. We need to close ancestors before we can check for nesting
// limits, whether this tag is allowed within current context (the context may change
// as ancestors are closed) or whether the required ancestors are still there (they might
// have been closed by a rule.)
if ($this->cntTotal[$tagName] >= $tagConfig['tagLimit']) {
$this->logger->err('Tag limit exceeded', ['tag' => $tag, 'tagName' => $tagName, 'tagLimit' => $tagConfig['tagLimit']]);
$tag->invalidate();
return;
}
if (!$this->filterTag($tag)) {
$tag->invalidate();
return;
}
if ($this->fosterParent($tag) || $this->closeParent($tag) || $this->closeAncestor($tag)) {
// This tag parent/ancestor needs to be closed, we just return (the tag is still valid)
return;
}
if ($this->cntOpen[$tagName] >= $tagConfig['nestingLimit']) {
$this->logger->err('Nesting limit exceeded', ['tag' => $tag, 'tagName' => $tagName, 'nestingLimit' => $tagConfig['nestingLimit']]);
$tag->invalidate();
return;
}
if (!$this->tagIsAllowed($tagName)) {
$msg = 'Tag is not allowed in this context';
$context = ['tag' => $tag, 'tagName' => $tagName];
if ($tag->getLen() > 0) {
$this->logger->warn($msg, $context);
} else {
$this->logger->debug($msg, $context);
}
$tag->invalidate();
return;
}
if ($this->requireAncestor($tag)) {
$tag->invalidate();
return;
}
// If this tag has an autoClose rule and it's not paired with an end tag or followed by an
// end tag, we replace it with a self-closing tag with the same properties
if ($tag->getFlags() & self::RULE_AUTO_CLOSE && !$tag->getEndTag() && !$this->isFollowedByClosingTag($tag)) {
$newTag = new Tag(Tag::SELF_CLOSING_TAG, $tagName, $tag->getPos(), $tag->getLen());
$newTag->setAttributes($tag->getAttributes());
$newTag->setFlags($tag->getFlags());
$tag = $newTag;
}
if ($tag->getFlags() & self::RULE_TRIM_FIRST_LINE && !$tag->getEndTag() && substr($this->text, $tag->getPos() + $tag->getLen(), 1) === "\n") {
$this->addIgnoreTag($tag->getPos() + $tag->getLen(), 1);
}
// This tag is valid, output it and update the context
$this->outputTag($tag);
$this->pushContext($tag);
}
