/**
* Create stream for given filename.
*
* @param string|StreamInterface|StreamableInterface $filename
* @return StreamInterface
*/
private function getStream($filename)
{
if ($filename instanceof StreamableInterface) {
return $filename->getStream();
}
if ($filename instanceof StreamInterface) {
return $filename;
}
if (is_resource($filename)) {
return new Stream($filename, 'r');
}
if (!$this->files->isFile($filename)) {
throw new \InvalidArgumentException("Unable to allocate response body stream, file does not exist.");
}
return new Stream(fopen($this->files->localUri($filename), 'r'));
}
/**
* {@inheritdoc}
*
* @param Isolator|null $isolator
*/
public function process($source, $namespace, $view, $cachedFilename = null, Isolator $isolator = null)
{
$isolator = !empty($isolator) ? $isolator : new Isolator();
//Let's hide original php blocks
$source = $isolator->isolatePHP($source);
//Now we have to detect blocks which has to be compiled
//Restoring only evaluator blocks
$phpBlocks = $evaluateBlocks = [];
foreach ($isolator->getBlocks() as $id => $phpBlock) {
if ($this->evaluatable($phpBlock)) {
$evaluateBlocks[$id] = $phpBlock;
continue;
}
$phpBlocks[$id] = $phpBlock;
}
//Let's only mount blocks to be evaluated
$source = $isolator->setBlocks($evaluateBlocks)->repairPHP($source);
$isolator->setBlocks($phpBlocks);
//Let's create temporary filename
$filename = $this->evalFilename($cachedFilename);
//I must validate file syntax in a future
try {
$this->files->write($filename, $source, FilesInterface::RUNTIME, true);
ob_start();
$__outputLevel__ = ob_get_level();
//Can be accessed in evaluated php
$this->namespace = $namespace;
$this->view = $view;
try {
include_once $this->files->localUri($filename);
} finally {
while (ob_get_level() > $__outputLevel__) {
ob_end_clean();
}
}
$this->namespace = '';
$this->view = '';
$source = ob_get_clean();
//Dropping temporary filename
$this->files->delete($filename);
} catch (\ErrorException $exception) {
throw $exception;
}
//Restoring original php blocks
return $isolator->repairPHP($source);
}
/**
* {@inheritdoc}
*/
public function load($key)
{
if ($this->files->exists($key)) {
include_once $this->files->localUri($key);
}
}
/**
* Get local cache filename (to be included in view).
*
* @param string $key
* @return string
*/
public function cachedFilename($key)
{
return $this->files->localUri($key);
}
