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parsing.php
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<?php
/*
* @package s9e\TextFormatter
* @copyright Copyright (c) 2010-2017 The s9e Authors
* @license http://www.opensource.org/licenses/mit-license.php The MIT License
*/
namespace s9e\TextFormatter;
use InvalidArgumentException;
use RuntimeException;
use s9e\TextFormatter\Parser\Logger;
use s9e\TextFormatter\Parser\Tag;
class Parser
{
const RULE_AUTO_CLOSE = 1;
const RULE_AUTO_REOPEN = 2;
const RULE_BREAK_PARAGRAPH = 4;
const RULE_CREATE_PARAGRAPHS = 8;
const RULE_DISABLE_AUTO_BR = 16;
const RULE_ENABLE_AUTO_BR = 32;
const RULE_IGNORE_TAGS = 64;
const RULE_IGNORE_TEXT = 128;
const RULE_IGNORE_WHITESPACE = 256;
const RULE_IS_TRANSPARENT = 512;
const RULE_PREVENT_BR = 1024;
const RULE_SUSPEND_AUTO_BR = 2048;
const RULE_TRIM_FIRST_LINE = 4096;
const RULES_AUTO_LINEBREAKS = 2096;
const RULES_INHERITANCE = 32;
const WHITESPACE = '
';
protected $cntOpen;
protected $cntTotal;
protected $context;
protected $currentFixingCost;
protected $currentTag;
protected $isRich;
protected $logger;
public $maxFixingCost = 1000;
protected $namespaces;
protected $openTags;
protected $output;
protected $pos;
protected $pluginParsers = array();
protected $pluginsConfig;
public $registeredVars = array();
protected $rootContext;
protected $tagsConfig;
protected $tagStack;
protected $tagStackIsSorted;
protected $text;
protected $textLen;
protected $uid = 0;
protected $wsPos;
public function __construct(array $config)
{
$this->pluginsConfig = $config['plugins'];
$this->registeredVars = $config['registeredVars'];
$this->rootContext = $config['rootContext'];
$this->tagsConfig = $config['tags'];
$this->__wakeup();
}
public function __sleep()
{
return array('pluginsConfig', 'registeredVars', 'rootContext', 'tagsConfig');
}
public function __wakeup()
{
$this->logger = new Logger;
}
protected function reset($text)
{
$text = \preg_replace('/\\r\\n?/', "\n", $text);
$text = \preg_replace('/[\\x00-\\x08\\x0B\\x0C\\x0E-\\x1F]+/S', '', $text);
$this->logger->clear();
$this->cntOpen = array();
$this->cntTotal = array();
$this->currentFixingCost = 0;
$this->currentTag = \null;
$this->isRich = \false;
$this->namespaces = array();
$this->openTags = array();
$this->output = '';
$this->pos = 0;
$this->tagStack = array();
$this->tagStackIsSorted = \false;
$this->text = $text;
$this->textLen = \strlen($text);
$this->wsPos = 0;
$this->context = $this->rootContext;
$this->context['inParagraph'] = \false;
++$this->uid;
}
protected function setTagOption($tagName, $optionName, $optionValue)
{
if (isset($this->tagsConfig[$tagName]))
{
$tagConfig = $this->tagsConfig[$tagName];
unset($this->tagsConfig[$tagName]);
$tagConfig[$optionName] = $optionValue;
$this->tagsConfig[$tagName] = $tagConfig;
}
}
public function disableTag($tagName)
{
$this->setTagOption($tagName, 'isDisabled', \true);
}
public function enableTag($tagName)
{
if (isset($this->tagsConfig[$tagName]))
unset($this->tagsConfig[$tagName]['isDisabled']);
}
public function getLogger()
{
return $this->logger;
}
public function getText()
{
return $this->text;
}
public function parse($text)
{
$this->reset($text);
$uid = $this->uid;
$this->executePluginParsers();
$this->processTags();
$this->finalizeOutput();
if ($this->uid !== $uid)
throw new RuntimeException('The parser has been reset during execution');
if ($this->currentFixingCost > $this->maxFixingCost)
$this->logger->warn('Fixing cost limit exceeded');
return $this->output;
}
public function setTagLimit($tagName, $tagLimit)
{
$this->setTagOption($tagName, 'tagLimit', $tagLimit);
}
public function setNestingLimit($tagName, $nestingLimit)
{
$this->setTagOption($tagName, 'nestingLimit', $nestingLimit);
}
public static function executeAttributePreprocessors(Tag $tag, array $tagConfig)
{
if (!empty($tagConfig['attributePreprocessors']))
foreach ($tagConfig['attributePreprocessors'] as $_5f417eec)
{
list($attrName, $regexp, $map) = $_5f417eec;
if (!$tag->hasAttribute($attrName))
continue;
self::executeAttributePreprocessor($tag, $attrName, $regexp, $map);
}
return \true;
}
protected static function executeAttributePreprocessor(Tag $tag, $attrName, $regexp, $map)
{
$attrValue = $tag->getAttribute($attrName);
$captures = self::getNamedCaptures($attrValue, $regexp, $map);
foreach ($captures as $k => $v)
if ($k === $attrName || !$tag->hasAttribute($k))
$tag->setAttribute($k, $v);
}
protected static function getNamedCaptures($attrValue, $regexp, $map)
{
if (!\preg_match($regexp, $attrValue, $m))
return array();
$values = array();
foreach ($map as $i => $k)
if (isset($m[$i]) && $m[$i] !== '')
$values[$k] = $m[$i];
return $values;
}
protected static function executeFilter(array $filter, array $vars)
{
$callback = $filter['callback'];
$params = (isset($filter['params'])) ? $filter['params'] : array();
$args = array();
foreach ($params as $k => $v)
if (\is_numeric($k))
$args[] = $v;
elseif (isset($vars[$k]))
$args[] = $vars[$k];
elseif (isset($vars['registeredVars'][$k]))
$args[] = $vars['registeredVars'][$k];
else
$args[] = \null;
return \call_user_func_array($callback, $args);
}
public static function filterAttributes(Tag $tag, array $tagConfig, array $registeredVars, Logger $logger)
{
if (empty($tagConfig['attributes']))
{
$tag->setAttributes(array());
return \true;
}
foreach ($tagConfig['attributes'] as $attrName => $attrConfig)
if (isset($attrConfig['generator']))
$tag->setAttribute(
$attrName,
self::executeFilter(
$attrConfig['generator'],
array(
'attrName' => $attrName,
'logger' => $logger,
'registeredVars' => $registeredVars
)
)
);
foreach ($tag->getAttributes() as $attrName => $attrValue)
{
if (!isset($tagConfig['attributes'][$attrName]))
{
$tag->removeAttribute($attrName);
continue;
}
$attrConfig = $tagConfig['attributes'][$attrName];
if (!isset($attrConfig['filterChain']))
continue;
$logger->setAttribute($attrName);
foreach ($attrConfig['filterChain'] as $filter)
{
$attrValue = self::executeFilter(
$filter,
array(
'attrName' => $attrName,
'attrValue' => $attrValue,
'logger' => $logger,
'registeredVars' => $registeredVars
)
);
if ($attrValue === \false)
{
$tag->removeAttribute($attrName);
break;
}
}
if ($attrValue !== \false)
$tag->setAttribute($attrName, $attrValue);
$logger->unsetAttribute();
}
foreach ($tagConfig['attributes'] as $attrName => $attrConfig)
if (!$tag->hasAttribute($attrName))
if (isset($attrConfig['defaultValue']))
$tag->setAttribute($attrName, $attrConfig['defaultValue']);
elseif (!empty($attrConfig['required']))
return \false;
return \true;
}
protected function filterTag(Tag $tag)
{
$tagName = $tag->getName();
$tagConfig = $this->tagsConfig[$tagName];
$isValid = \true;
if (!empty($tagConfig['filterChain']))
{
$this->logger->setTag($tag);
$vars = array(
'logger' => $this->logger,
'openTags' => $this->openTags,
'parser' => $this,
'registeredVars' => $this->registeredVars,
'tag' => $tag,
'tagConfig' => $tagConfig,
'text' => $this->text
);
foreach ($tagConfig['filterChain'] as $filter)
if (!self::executeFilter($filter, $vars))
{
$isValid = \false;
break;
}
$this->logger->unsetTag();
}
return $isValid;
}
protected function finalizeOutput()
{
$this->outputText($this->textLen, 0, \true);
do
{
$this->output = \preg_replace('(<([^ />]+)></\\1>)', '', $this->output, -1, $cnt);
}
while ($cnt > 0);
if (\strpos($this->output, '</i><i>') !== \false)
$this->output = \str_replace('</i><i>', '', $this->output);
$this->output = Utils::encodeUnicodeSupplementaryCharacters($this->output);
$tagName = ($this->isRich) ? 'r' : 't';
$tmp = '<' . $tagName;
foreach (\array_keys($this->namespaces) as $prefix)
$tmp .= ' xmlns:' . $prefix . '="urn:s9e:TextFormatter:' . $prefix . '"';
$this->output = $tmp . '>' . $this->output . '</' . $tagName . '>';
}
protected function outputTag(Tag $tag)
{
$this->isRich = \true;
$tagName = $tag->getName();
$tagPos = $tag->getPos();
$tagLen = $tag->getLen();
$tagFlags = $tag->getFlags();
if ($tagFlags & self::RULE_IGNORE_WHITESPACE)
{
$skipBefore = 1;
$skipAfter = ($tag->isEndTag()) ? 2 : 1;
}
else
$skipBefore = $skipAfter = 0;
$closeParagraph = \false;
if ($tag->isStartTag())
{
if ($tagFlags & self::RULE_BREAK_PARAGRAPH)
$closeParagraph = \true;
}
else
$closeParagraph = \true;
$this->outputText($tagPos, $skipBefore, $closeParagraph);
$tagText = ($tagLen)
? \htmlspecialchars(\substr($this->text, $tagPos, $tagLen), \ENT_NOQUOTES, 'UTF-8')
: '';
if ($tag->isStartTag())
{
if (!($tagFlags & self::RULE_BREAK_PARAGRAPH))
$this->outputParagraphStart($tagPos);
$colonPos = \strpos($tagName, ':');
if ($colonPos)
$this->namespaces[\substr($tagName, 0, $colonPos)] = 0;
$this->output .= '<' . $tagName;
$attributes = $tag->getAttributes();
\ksort($attributes);
foreach ($attributes as $attrName => $attrValue)
$this->output .= ' ' . $attrName . '="' . \str_replace("\n", ' ', \htmlspecialchars($attrValue, \ENT_COMPAT, 'UTF-8')) . '"';
if ($tag->isSelfClosingTag())
if ($tagLen)
$this->output .= '>' . $tagText . '</' . $tagName . '>';
else
$this->output .= '/>';
elseif ($tagLen)
$this->output .= '><s>' . $tagText . '</s>';
else
$this->output .= '>';
}
else
{
if ($tagLen)
$this->output .= '<e>' . $tagText . '</e>';
$this->output .= '</' . $tagName . '>';
}
$this->pos = $tagPos + $tagLen;
$this->wsPos = $this->pos;
while ($skipAfter && $this->wsPos < $this->textLen && $this->text[$this->wsPos] === "\n")
{
--$skipAfter;
++$this->wsPos;
}
}
protected function outputText($catchupPos, $maxLines, $closeParagraph)
{
if ($closeParagraph)
if (!($this->context['flags'] & self::RULE_CREATE_PARAGRAPHS))
$closeParagraph = \false;
else
$maxLines = -1;
if ($this->pos >= $catchupPos)
{
if ($closeParagraph)
$this->outputParagraphEnd();
return;
}
if ($this->wsPos > $this->pos)
{
$skipPos = \min($catchupPos, $this->wsPos);
$this->output .= \substr($this->text, $this->pos, $skipPos - $this->pos);
$this->pos = $skipPos;
if ($this->pos >= $catchupPos)
{
if ($closeParagraph)
$this->outputParagraphEnd();
return;
}
}
if ($this->context['flags'] & self::RULE_IGNORE_TEXT)
{
$catchupLen = $catchupPos - $this->pos;
$catchupText = \substr($this->text, $this->pos, $catchupLen);
if (\strspn($catchupText, " \n\t") < $catchupLen)
$catchupText = '<i>' . $catchupText . '</i>';
$this->output .= $catchupText;
$this->pos = $catchupPos;
if ($closeParagraph)
$this->outputParagraphEnd();
return;
}
$ignorePos = $catchupPos;
$ignoreLen = 0;
while ($maxLines && --$ignorePos >= $this->pos)
{
$c = $this->text[$ignorePos];
if (\strpos(self::WHITESPACE, $c) === \false)
break;
if ($c === "\n")
--$maxLines;
++$ignoreLen;
}
$catchupPos -= $ignoreLen;
if ($this->context['flags'] & self::RULE_CREATE_PARAGRAPHS)
{
if (!$this->context['inParagraph'])
{
$this->outputWhitespace($catchupPos);
if ($catchupPos > $this->pos)
$this->outputParagraphStart($catchupPos);
}
$pbPos = \strpos($this->text, "\n\n", $this->pos);
while ($pbPos !== \false && $pbPos < $catchupPos)
{
$this->outputText($pbPos, 0, \true);
$this->outputParagraphStart($catchupPos);
$pbPos = \strpos($this->text, "\n\n", $this->pos);
}
}
if ($catchupPos > $this->pos)
{
$catchupText = \htmlspecialchars(
\substr($this->text, $this->pos, $catchupPos - $this->pos),
\ENT_NOQUOTES,
'UTF-8'
);
if (($this->context['flags'] & self::RULES_AUTO_LINEBREAKS) === self::RULE_ENABLE_AUTO_BR)
$catchupText = \str_replace("\n", "<br/>\n", $catchupText);
$this->output .= $catchupText;
}
if ($closeParagraph)
$this->outputParagraphEnd();
if ($ignoreLen)
$this->output .= \substr($this->text, $catchupPos, $ignoreLen);
$this->pos = $catchupPos + $ignoreLen;
}
protected function outputBrTag(Tag $tag)
{
$this->outputText($tag->getPos(), 0, \false);
$this->output .= '<br/>';
}
protected function outputIgnoreTag(Tag $tag)
{
$tagPos = $tag->getPos();
$tagLen = $tag->getLen();
$ignoreText = \substr($this->text, $tagPos, $tagLen);
$this->outputText($tagPos, 0, \false);
$this->output .= '<i>' . \htmlspecialchars($ignoreText, \ENT_NOQUOTES, 'UTF-8') . '</i>';
$this->isRich = \true;
$this->pos = $tagPos + $tagLen;
}
protected function outputParagraphStart($maxPos)
{
if ($this->context['inParagraph']
|| !($this->context['flags'] & self::RULE_CREATE_PARAGRAPHS))
return;
$this->outputWhitespace($maxPos);
if ($this->pos < $this->textLen)
{
$this->output .= '<p>';
$this->context['inParagraph'] = \true;
}
}
protected function outputParagraphEnd()
{
if (!$this->context['inParagraph'])
return;
$this->output .= '</p>';
$this->context['inParagraph'] = \false;
}
protected function outputVerbatim(Tag $tag)
{
$flags = $this->context['flags'];
$this->context['flags'] = $tag->getFlags();
$this->outputText($this->currentTag->getPos() + $this->currentTag->getLen(), 0, \false);
$this->context['flags'] = $flags;
}
protected function outputWhitespace($maxPos)
{
if ($maxPos > $this->pos)
{
$spn = \strspn($this->text, self::WHITESPACE, $this->pos, $maxPos - $this->pos);
if ($spn)
{
$this->output .= \substr($this->text, $this->pos, $spn);
$this->pos += $spn;
}
}
}
public function disablePlugin($pluginName)
{
if (isset($this->pluginsConfig[$pluginName]))
{
$pluginConfig = $this->pluginsConfig[$pluginName];
unset($this->pluginsConfig[$pluginName]);
$pluginConfig['isDisabled'] = \true;
$this->pluginsConfig[$pluginName] = $pluginConfig;
}
}
public function enablePlugin($pluginName)
{
if (isset($this->pluginsConfig[$pluginName]))
$this->pluginsConfig[$pluginName]['isDisabled'] = \false;
}
protected function executePluginParser($pluginName)
{
$pluginConfig = $this->pluginsConfig[$pluginName];
if (isset($pluginConfig['quickMatch']) && \strpos($this->text, $pluginConfig['quickMatch']) === \false)
return;
$matches = array();
if (isset($pluginConfig['regexp']))
{
$matches = $this->getMatches($pluginConfig['regexp'], $pluginConfig['regexpLimit']);
if (empty($matches))
return;
}
\call_user_func($this->getPluginParser($pluginName), $this->text, $matches);
}
protected function executePluginParsers()
{
foreach ($this->pluginsConfig as $pluginName => $pluginConfig)
if (empty($pluginConfig['isDisabled']))
$this->executePluginParser($pluginName);
}
protected function getMatches($regexp, $limit)
{
$cnt = \preg_match_all($regexp, $this->text, $matches, \PREG_SET_ORDER | \PREG_OFFSET_CAPTURE);
if ($cnt > $limit)
$matches = \array_slice($matches, 0, $limit);
return $matches;
}
protected function getPluginParser($pluginName)
{
if (!isset($this->pluginParsers[$pluginName]))
{
$pluginConfig = $this->pluginsConfig[$pluginName];
$className = (isset($pluginConfig['className']))
? $pluginConfig['className']
: 's9e\\TextFormatter\\Plugins\\' . $pluginName . '\\Parser';
$this->pluginParsers[$pluginName] = array(new $className($this, $pluginConfig), 'parse');
}
return $this->pluginParsers[$pluginName];
}
public function registerParser($pluginName, $parser, $regexp = \null, $limit = \PHP_INT_MAX)
{
if (!\is_callable($parser))
throw new InvalidArgumentException('Argument 1 passed to ' . __METHOD__ . ' must be a valid callback');
if (!isset($this->pluginsConfig[$pluginName]))
$this->pluginsConfig[$pluginName] = array();
if (isset($regexp))
{
$this->pluginsConfig[$pluginName]['regexp'] = $regexp;
$this->pluginsConfig[$pluginName]['regexpLimit'] = $limit;
}
$this->pluginParsers[$pluginName] = $parser;
}
protected function closeAncestor(Tag $tag)
{
if (!empty($this->openTags))
{
$tagName = $tag->getName();
$tagConfig = $this->tagsConfig[$tagName];
if (!empty($tagConfig['rules']['closeAncestor']))
{
$i = \count($this->openTags);
while (--$i >= 0)
{
$ancestor = $this->openTags[$i];
$ancestorName = $ancestor->getName();
if (isset($tagConfig['rules']['closeAncestor'][$ancestorName]))
{
$this->tagStack[] = $tag;
$this->addMagicEndTag($ancestor, $tag->getPos());
return \true;
}
}
}
}
return \false;
}
protected function closeParent(Tag $tag)
{
if (!empty($this->openTags))
{
$tagName = $tag->getName();
$tagConfig = $this->tagsConfig[$tagName];
if (!empty($tagConfig['rules']['closeParent']))
{
$parent = \end($this->openTags);
$parentName = $parent->getName();
if (isset($tagConfig['rules']['closeParent'][$parentName]))
{
$this->tagStack[] = $tag;
$this->addMagicEndTag($parent, $tag->getPos());
return \true;
}
}
}
return \false;
}
protected function createChild(Tag $tag)
{
$tagConfig = $this->tagsConfig[$tag->getName()];
if (isset($tagConfig['rules']['createChild']))
{
$priority = -1000;
$tagPos = $this->pos + \strspn($this->text, " \n\r\t", $this->pos);
foreach ($tagConfig['rules']['createChild'] as $tagName)
$this->addStartTag($tagName, $tagPos, 0, ++$priority);
}
}
protected function fosterParent(Tag $tag)
{
if (!empty($this->openTags))
{
$tagName = $tag->getName();
$tagConfig = $this->tagsConfig[$tagName];
if (!empty($tagConfig['rules']['fosterParent']))
{
$parent = \end($this->openTags);
$parentName = $parent->getName();
if (isset($tagConfig['rules']['fosterParent'][$parentName]))
{
if ($parentName !== $tagName && $this->currentFixingCost < $this->maxFixingCost)
{
$child = $this->addCopyTag($parent, $tag->getPos() + $tag->getLen(), 0, $tag->getSortPriority() + 1);
$tag->cascadeInvalidationTo($child);
}
$this->tagStack[] = $tag;
$this->addMagicEndTag($parent, $tag->getPos(), $tag->getSortPriority() - 1);
$this->currentFixingCost += 4;
return \true;
}
}
}
return \false;
}
protected function requireAncestor(Tag $tag)
{
$tagName = $tag->getName();
$tagConfig = $this->tagsConfig[$tagName];
if (isset($tagConfig['rules']['requireAncestor']))
{
foreach ($tagConfig['rules']['requireAncestor'] as $ancestorName)
if (!empty($this->cntOpen[$ancestorName]))
return \false;
$this->logger->err('Tag requires an ancestor', array(
'requireAncestor' => \implode(',', $tagConfig['rules']['requireAncestor']),
'tag' => $tag
));
return \true;
}
return \false;
}
protected function addMagicEndTag(Tag $startTag, $tagPos, $prio = 0)
{
$tagName = $startTag->getName();
if ($startTag->getFlags() & self::RULE_IGNORE_WHITESPACE)
$tagPos = $this->getMagicPos($tagPos);
$endTag = $this->addEndTag($tagName, $tagPos, 0, $prio);
$endTag->pairWith($startTag);
return $endTag;
}
protected function getMagicPos($tagPos)
{
while ($tagPos > $this->pos && \strpos(self::WHITESPACE, $this->text[$tagPos - 1]) !== \false)
--$tagPos;
return $tagPos;
}
protected function isFollowedByClosingTag(Tag $tag)
{
return (empty($this->tagStack)) ? \false : \end($this->tagStack)->canClose($tag);
}
protected function processTags()
{
if (empty($this->tagStack))
return;
foreach (\array_keys($this->tagsConfig) as $tagName)
{
$this->cntOpen[$tagName] = 0;
$this->cntTotal[$tagName] = 0;
}
do
{
while (!empty($this->tagStack))
{
if (!$this->tagStackIsSorted)
$this->sortTags();
$this->currentTag = \array_pop($this->tagStack);
$this->processCurrentTag();
}
foreach ($this->openTags as $startTag)
$this->addMagicEndTag($startTag, $this->textLen);
}
while (!empty($this->tagStack));
}
protected function processCurrentTag()
{
if (($this->context['flags'] & self::RULE_IGNORE_TAGS)
&& !$this->currentTag->canClose(\end($this->openTags))
&& !$this->currentTag->isSystemTag())
$this->currentTag->invalidate();
$tagPos = $this->currentTag->getPos();
$tagLen = $this->currentTag->getLen();
if ($this->pos > $tagPos && !$this->currentTag->isInvalid())
{
$startTag = $this->currentTag->getStartTag();
if ($startTag && \in_array($startTag, $this->openTags, \true))
{
$this->addEndTag(
$startTag->getName(),
$this->pos,
\max(0, $tagPos + $tagLen - $this->pos)
)->pairWith($startTag);
return;
}
if ($this->currentTag->isIgnoreTag())
{
$ignoreLen = $tagPos + $tagLen - $this->pos;
if ($ignoreLen > 0)
{
$this->addIgnoreTag($this->pos, $ignoreLen);
return;
}
}
$this->currentTag->invalidate();
}
if ($this->currentTag->isInvalid())
return;
if ($this->currentTag->isIgnoreTag())
$this->outputIgnoreTag($this->currentTag);
elseif ($this->currentTag->isBrTag())
{
if (!($this->context['flags'] & self::RULE_PREVENT_BR))
$this->outputBrTag($this->currentTag);
}
elseif ($this->currentTag->isParagraphBreak())
$this->outputText($this->currentTag->getPos(), 0, \true);
elseif ($this->currentTag->isVerbatim())
$this->outputVerbatim($this->currentTag);
elseif ($this->currentTag->isStartTag())
$this->processStartTag($this->currentTag);
else
$this->processEndTag($this->currentTag);
}
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);
}
protected function processEndTag(Tag $tag)
{
$tagName = $tag->getName();
if (empty($this->cntOpen[$tagName]))
return;
$closeTags = array();
$i = \count($this->openTags);
while (--$i >= 0)
{
$openTag = $this->openTags[$i];
if ($tag->canClose($openTag))
break;
$closeTags[] = $openTag;
++$this->currentFixingCost;
}
if ($i < 0)
{
$this->logger->debug('Skipping end tag with no start tag', array('tag' => $tag));
return;
}
$keepReopening = (bool) ($this->currentFixingCost < $this->maxFixingCost);
$reopenTags = array();
foreach ($closeTags as $openTag)
{
$openTagName = $openTag->getName();
if ($keepReopening)
if ($openTag->getFlags() & self::RULE_AUTO_REOPEN)
$reopenTags[] = $openTag;
else
$keepReopening = \false;
$tagPos = $tag->getPos();
if ($openTag->getFlags() & self::RULE_IGNORE_WHITESPACE)
$tagPos = $this->getMagicPos($tagPos);
$endTag = new Tag(Tag::END_TAG, $openTagName, $tagPos, 0);
$endTag->setFlags($openTag->getFlags());
$this->outputTag($endTag);
$this->popContext();
}
$this->outputTag($tag);
$this->popContext();
if (!empty($closeTags) && $this->currentFixingCost < $this->maxFixingCost)
{
$ignorePos = $this->pos;
$i = \count($this->tagStack);
while (--$i >= 0 && ++$this->currentFixingCost < $this->maxFixingCost)
{
$upcomingTag = $this->tagStack[$i];
if ($upcomingTag->getPos() > $ignorePos
|| $upcomingTag->isStartTag())
break;
$j = \count($closeTags);
while (--$j >= 0 && ++$this->currentFixingCost < $this->maxFixingCost)
if ($upcomingTag->canClose($closeTags[$j]))
{
\array_splice($closeTags, $j, 1);
if (isset($reopenTags[$j]))
\array_splice($reopenTags, $j, 1);
$ignorePos = \max(
$ignorePos,
$upcomingTag->getPos() + $upcomingTag->getLen()
);
break;
}
}
if ($ignorePos > $this->pos)
$this->outputIgnoreTag(new Tag(Tag::SELF_CLOSING_TAG, 'i', $this->pos, $ignorePos - $this->pos));
}
foreach ($reopenTags as $startTag)
{
$newTag = $this->addCopyTag($startTag, $this->pos, 0);
$endTag = $startTag->getEndTag();
if ($endTag)
$newTag->pairWith($endTag);
}
}
protected function popContext()
{
$tag = \array_pop($this->openTags);
--$this->cntOpen[$tag->getName()];
$this->context = $this->context['parentContext'];
}
protected function pushContext(Tag $tag)
{
$tagName = $tag->getName();
$tagFlags = $tag->getFlags();
$tagConfig = $this->tagsConfig[$tagName];
++$this->cntTotal[$tagName];
if ($tag->isSelfClosingTag())
return;
$allowed = array();
if ($tagFlags & self::RULE_IS_TRANSPARENT)
foreach ($this->context['allowed'] as $k => $v)
$allowed[] = $tagConfig['allowed'][$k] & $v;
else
foreach ($this->context['allowed'] as $k => $v)
$allowed[] = $tagConfig['allowed'][$k] & (($v & 0xFF00) | ($v >> 8));
$flags = $tagFlags | ($this->context['flags'] & self::RULES_INHERITANCE);
if ($flags & self::RULE_DISABLE_AUTO_BR)
$flags &= ~self::RULE_ENABLE_AUTO_BR;
++$this->cntOpen[$tagName];
$this->openTags[] = $tag;
$this->context = array(
'allowed' => $allowed,
'flags' => $flags,
'inParagraph' => \false,
'parentContext' => $this->context
);
}
protected function tagIsAllowed($tagName)
{
$n = $this->tagsConfig[$tagName]['bitNumber'];
return (bool) ($this->context['allowed'][$n >> 3] & (1 << ($n & 7)));
}
public function addStartTag($name, $pos, $len, $prio = 0)
{
return $this->addTag(Tag::START_TAG, $name, $pos, $len, $prio);
}
public function addEndTag($name, $pos, $len, $prio = 0)
{
return $this->addTag(Tag::END_TAG, $name, $pos, $len, $prio);
}
public function addSelfClosingTag($name, $pos, $len, $prio = 0)
{
return $this->addTag(Tag::SELF_CLOSING_TAG, $name, $pos, $len, $prio);
}
public function addBrTag($pos, $prio = 0)
{
return $this->addTag(Tag::SELF_CLOSING_TAG, 'br', $pos, 0, $prio);
}
public function addIgnoreTag($pos, $len, $prio = 0)
{
return $this->addTag(Tag::SELF_CLOSING_TAG, 'i', $pos, \min($len, $this->textLen - $pos), $prio);
}
public function addParagraphBreak($pos, $prio = 0)
{
return $this->addTag(Tag::SELF_CLOSING_TAG, 'pb', $pos, 0, $prio);
}
public function addCopyTag(Tag $tag, $pos, $len, $prio = \null)
{
if (!isset($prio))
$prio = $tag->getSortPriority();
$copy = $this->addTag($tag->getType(), $tag->getName(), $pos, $len, $prio);
$copy->setAttributes($tag->getAttributes());
return $copy;
}
protected function addTag($type, $name, $pos, $len, $prio)
{
$tag = new Tag($type, $name, $pos, $len, $prio);
if (isset($this->tagsConfig[$name]))
$tag->setFlags($this->tagsConfig[$name]['rules']['flags']);
if (!isset($this->tagsConfig[$name]) && !$tag->isSystemTag())
$tag->invalidate();
elseif (!empty($this->tagsConfig[$name]['isDisabled']))
{
$this->logger->warn(
'Tag is disabled',
array(
'tag' => $tag,
'tagName' => $name
)
);
$tag->invalidate();
}
elseif ($len < 0 || $pos < 0 || $pos + $len > $this->textLen)
$tag->invalidate();
else
$this->insertTag($tag);
return $tag;
}
protected function insertTag(Tag $tag)
{
if (!$this->tagStackIsSorted)
$this->tagStack[] = $tag;
else
{
$i = \count($this->tagStack);
while ($i > 0 && self::compareTags($this->tagStack[$i - 1], $tag) > 0)
{
$this->tagStack[$i] = $this->tagStack[$i - 1];
--$i;
}
$this->tagStack[$i] = $tag;
}
}
public function addTagPair($name, $startPos, $startLen, $endPos, $endLen, $prio = 0)
{