<?php
// src/Rapsys/PackBundle/Twig/PackTokenParser.php
namespace Rapsys\PackBundle\Twig;
use Symfony\Component\HttpKernel\Config\FileLocator;
use Symfony\Component\Asset\Packages;
class PackTokenParser extends \Twig_TokenParser {
private $tag;
/**
* Constructor.
*
* @param class $fileLocator The FileLocator instance
* @param class $assetsPackages The Assets Packages instance
* @param string $config The config path
* @param string $tag The tag name
* @param string $output The default output string
* @param array $filters The default filters array
*/
public function __construct(FileLocator $fileLocator, Packages $assetsPackages, $config, $tag, $output, $filters) {
$this->fileLocator = $fileLocator;
$this->assetsPackages = $assetsPackages;
//Set prefix
$this->prefix = $config['prefix'];
//Set name
$this->name = $config['name'];
//Set scheme
$this->scheme = $config['scheme'];
//Set timeout
$this->timeout = $config['timeout'];
//Set agent
$this->agent = $config['agent'];
//Set redirect
$this->redirect = $config['redirect'];
//Set tag
$this->tag = $tag;
//Set output
$this->output = $output;
//Set filters
$this->filters = $filters;
}
public function getTag() {
return $this->tag;
}
public function parse(\Twig_Token $token) {
$parser = $this->parser;
$stream = $this->parser->getStream();
$inputs = array();
$name = $this->name;
$output = $this->output;
$filters = $this->filters;
$content = '';
while (!$stream->test(\Twig_Token::BLOCK_END_TYPE)) {
if ($stream->test(\Twig_Token::STRING_TYPE)) {
// '@jquery', 'js/src/core/*', 'js/src/extra.js'
$inputs[] = $stream->next()->getValue();
} elseif ($stream->test(\Twig_Token::NAME_TYPE, 'filters')) {
// filter='yui_js'
$stream->next();
$stream->expect(\Twig_Token::OPERATOR_TYPE, '=');
$filters = array_merge($filters, array_filter(array_map('trim', explode(',', $stream->expect(\Twig_Token::STRING_TYPE)->getValue()))));
} elseif ($stream->test(\Twig_Token::NAME_TYPE, 'output')) {
// output='js/packed/*.js' OR output='js/core.js'
$stream->next();
$stream->expect(\Twig_Token::OPERATOR_TYPE, '=');
$output = $stream->expect(\Twig_Token::STRING_TYPE)->getValue();
} elseif ($stream->test(\Twig_Token::NAME_TYPE, 'name')) {
// name='core_js'
$stream->next();
$stream->expect(\Twig_Token::OPERATOR_TYPE, '=');
$name = $stream->expect(\Twig_Token::STRING_TYPE)->getValue();
} else {
$token = $stream->getCurrent();
throw new \Twig_Error_Syntax(sprintf('Unexpected token "%s" of value "%s"', \Twig_Token::typeToEnglish($token->getType()), $token->getValue()), $token->getLine(), $stream->getSourceContext());
}
}
$stream->expect(\Twig_Token::BLOCK_END_TYPE);
$body = $this->parser->subparse(array($this, 'testEndTag'), true);
$stream->expect(\Twig_Token::BLOCK_END_TYPE);
//Replace star with sha1
if (($pos = strpos($output, '*')) !== false) {
#XXX: assetic code: substr(sha1(serialize($inputs).serialize($filters).serialize($options)), 0, 7)
$output = substr($output, 0, $pos).sha1(serialize($inputs).serialize($filters)).substr($output, $pos + 1);
}
//Deal with inputs
for($k = 0; $k < count($inputs); $k++) {
//Deal with generic url
if (strpos($inputs[$k], '//') === 0) {
//Fix url
$inputs[$k] = $this->scheme.substr($inputs[$k], 2);
//Deal with non url path
} elseif (strpos($inputs[$k], '://') === false) {
//Check if we have a bundle path
if ($inputs[$k][0] == '@') {
//Check that we don't have only a path
if (($pos = strpos($inputs[$k], '/')) === false) {
#TODO: @jquery support (if we really want it)
#header('Content-Type: text/plain');
#var_dump($inputs);
#if ($inputs[0] == '@jquery') {
# exit;
#}
throw new \Twig_Error_Syntax(sprintf('Invalid input path "%s"', $inputs[$k]), $token->getLine(), $stream->getSourceContext());
}
//Resolve bundle prefix
$inputs[$k] = $this->fileLocator->locate(substr($inputs[$k], 0, $pos)).substr($inputs[$k], $pos + 1);
}
//Deal with globs
if (strpos($inputs[$k], '*') !== false || (($a = strpos($inputs[$k], '{')) !== false && ($b = strpos($inputs[$k], ',', $a)) !== false && strpos($inputs[$k], '}', $b) !== false)) {
//Get replacement
$replacement = glob($inputs[$k], GLOB_NOSORT|GLOB_BRACE);
//Check that these are working files
foreach($replacement as $input) {
if (!is_file($input)) {
throw new \Twig_Error_Syntax(sprintf('Input path "%s" from "%s" is not a file', $input, $inputs[$k]), $token->getLine(), $stream->getSourceContext());
}
}
//Replace with glob path
array_splice($inputs, $k, 1, $replacement);
//Fix current key
$k += count($replacement) - 1;
//Check that it's a file
} elseif (!is_file($inputs[$k])) {
throw new \Twig_Error_Syntax(sprintf('Input path "%s" is not a file', $inputs[$k]), $token->getLine(), $stream->getSourceContext());
}
}
}
//Init context
$ctx = stream_context_create(
array(
'http' => array(
'timeout' => $this->timeout,
'user_agent' => $this->agent,
'redirect' => $this->redirect,
)
)
);
//Check inputs
if (!empty($inputs)) {
//Retrieve files content
foreach($inputs as $input) {
//Try to retrieve content
if (($data = file_get_contents($input, false, $ctx)) === false) {
throw new \Twig_Error_Syntax(sprintf('Unable to retrieve input path "%s"', $input), $token->getLine(), $stream->getSourceContext());
}
//Append content
$content .= $data;
}
} else {
#TODO: trigger error about empty inputs ?
}
//Check filters
if (!empty($filters)) {
//Apply all filters
foreach($filters as $filter) {
//Init args
$args = array($stream->getSourceContext(), $token->getLine());
//Check if args is available
if (!empty($filter['args'])) {
//Append args if provided
$args += $filter['args'];
}
//Init reflection
$reflection = new \ReflectionClass($filter['class']);
//Set instance args
$tool = $reflection->newInstanceArgs($args);
//Process content
$content = $tool->process($content);
//Remove object
unset($tool, $reflection);
}
} else {
#TODO: trigger error about empty filters ?
}
//Create output dir on demand
if (!is_dir($parent = $dir = dirname($this->prefix.$output))) {
try {
//XXX: set as 0777, symfony umask (0022) will reduce rights (0755)
mkdir($dir, 0777, true);
} catch (\Exception $e) {
throw new \Twig_Error_Syntax(sprintf('Unable to create directory: %s', $dir), $token->getLine(), $stream->getSourceContext());
}
}
//Send file content
//XXX: atomic rotation is required to avoid partial content in reverse cache
if (file_put_contents($this->prefix.$output.'.new', $content) === false) {
throw new \Twig_Error_Syntax(sprintf('Unable to write to: %s', $prefix.$output.'.new'), $token->getLine(), $stream->getSourceContext());
}
//Remove old file
if (is_file($this->prefix.$output) && unlink($this->prefix.$output) === false) {
throw new \Twig_Error_Syntax(sprintf('Unable to unlink: %s', $prefix.$output), $token->getLine(), $stream->getSourceContext());
}
//Rename it
if (rename($this->prefix.$output.'.new', $this->prefix.$output) === false) {
throw new \Twig_Error_Syntax(sprintf('Unable to rename: %s to %s', $prefix.$output.'.new', $prefix.$output), $token->getLine(), $stream->getSourceContext());
}
//Retrieve asset uri
//XXX: was next line to support module specific asset configuration
#if (($output = $this->assetsPackages->getUrl($output, 'rapsys_pack')) === false) {
if (($output = $this->assetsPackages->getUrl($output)) === false) {
#throw new \Twig_Error_Syntax(sprintf('Unable to get url for asset: %s with package %s', $output, 'rapsys_pack'), $token->getLine(), $stream->getSourceContext());
throw new \Twig_Error_Syntax(sprintf('Unable to get url for asset: %s', $output), $token->getLine(), $stream->getSourceContext());
}
//Send pack node
return new PackNode(array('value' => $body), array('inputs' => $inputs, 'filters' => $filters, 'name' => $name, 'output' => $output), $token->getLine(), $this->getTag());
}
public function testEndTag(\Twig_Token $token) {
return $token->test(array('end'.$this->getTag()));
}
}