/
Formatter.php
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/
Formatter.php
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<?php
/*
* This file is part of Flarum.
*
* (c) Toby Zerner <toby.zerner@gmail.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Flarum\Formatter;
use Flarum\Formatter\Event\Configuring;
use Flarum\Formatter\Event\Parsing;
use Flarum\Formatter\Event\Rendering;
use Illuminate\Contracts\Cache\Repository;
use Illuminate\Contracts\Events\Dispatcher;
use Psr\Http\Message\ServerRequestInterface;
use s9e\TextFormatter\Configurator;
use s9e\TextFormatter\Unparser;
class Formatter
{
/**
* @var Repository
*/
protected $cache;
/**
* @var Dispatcher
*/
protected $events;
/**
* @var string
*/
protected $cacheDir;
/**
* @param Repository $cache
* @param Dispatcher $events
* @param string $cacheDir
*/
public function __construct(Repository $cache, Dispatcher $events, $cacheDir)
{
$this->cache = $cache;
$this->events = $events;
$this->cacheDir = $cacheDir;
}
/**
* Parse text.
*
* @param string $text
* @param mixed $context
* @return string
*/
public function parse($text, $context = null)
{
$parser = $this->getParser($context);
$this->events->dispatch(new Parsing($parser, $context, $text));
return $parser->parse($text);
}
/**
* Render parsed XML.
*
* @param string $xml
* @param mixed $context
* @param ServerRequestInterface|null $request
* @return string
*/
public function render($xml, $context = null, ServerRequestInterface $request = null)
{
$renderer = $this->getRenderer();
$this->events->dispatch(new Rendering($renderer, $context, $xml, $request));
return $renderer->render($xml);
}
/**
* Unparse XML.
*
* @param string $xml
* @return string
*/
public function unparse($xml)
{
return Unparser::unparse($xml);
}
/**
* Flush the cache so that the formatter components are regenerated.
*/
public function flush()
{
$this->cache->forget('flarum.formatter');
}
/**
* @return Configurator
*/
protected function getConfigurator()
{
$configurator = new Configurator;
$configurator->rootRules->enableAutoLineBreaks();
$configurator->rendering->engine = 'PHP';
$configurator->rendering->engine->cacheDir = $this->cacheDir;
$configurator->enableJavaScript();
$configurator->javascript->exports = ['preview'];
$configurator->javascript->setMinifier('MatthiasMullieMinify')
->keepGoing = true;
$configurator->Escaper;
$configurator->Autoemail;
$configurator->Autolink;
$configurator->tags->onDuplicate('replace');
$this->events->dispatch(new Configuring($configurator));
$this->configureExternalLinks($configurator);
return $configurator;
}
/**
* @param Configurator $configurator
*/
protected function configureExternalLinks(Configurator $configurator)
{
$dom = $configurator->tags['URL']->template->asDOM();
foreach ($dom->getElementsByTagName('a') as $a) {
$a->setAttribute('target', '_blank');
$a->setAttribute('rel', 'nofollow');
}
$dom->saveChanges();
}
/**
* Get a TextFormatter component.
*
* @param string $name "renderer" or "parser" or "js"
* @return mixed
*/
protected function getComponent($name)
{
$formatter = $this->cache->rememberForever('flarum.formatter', function () {
return $this->getConfigurator()->finalize();
});
return $formatter[$name];
}
/**
* Get the parser.
*
* @param mixed $context
* @return \s9e\TextFormatter\Parser
*/
protected function getParser($context = null)
{
$parser = $this->getComponent('parser');
$parser->registeredVars['context'] = $context;
return $parser;
}
/**
* Get the renderer.
*
* @return \s9e\TextFormatter\Renderer
*/
protected function getRenderer()
{
spl_autoload_register(function ($class) {
if (file_exists($file = $this->cacheDir.'/'.$class.'.php')) {
include $file;
}
});
return $this->getComponent('renderer');
}
/**
* Get the formatter JavaScript.
*
* @return string
*/
public function getJs()
{
return $this->getComponent('js');
}
}