Raphaël G. Git Repositories - packbundle/blob - Twig/PackTokenParser.php

   1 <?php
   2 // src/Rapsys/PackBundle/Twig/PackTokenParser.php
   3 namespace Rapsys\PackBundle\Twig;
   4
   5 use Symfony\Component\HttpKernel\Config\FileLocator;
   6 use Symfony\Component\DependencyInjection\ContainerInterface;
   7
   8 class PackTokenParser extends \Twig_TokenParser {
   9         private $tag;
  10
  11         /**
  12          * Constructor.
  13          *
  14          * @param class         $fileLocator            The FileLocator instance
  15          * @param class         $assetsPackages         The Assets Packages instance
  16          * @param string        $prefix                 The prefix path
  17          * @param string        $tag                    The tag name
  18          * @param string        $output                 The default output string
  19          * @param array         $filters                The default filters array
  20          */
  21         public function __construct(FileLocator $fileLocator, ContainerInterface $containerInterface, $prefix, $tag, $output, $filters) {
  22                 $this->fileLocator              = $fileLocator;
  23                 $this->containerInterface       = $containerInterface;
  24                 $this->prefix                   = $prefix;
  25                 $this->tag                      = $tag;
  26                 $this->output                   = $output;
  27                 $this->filters                  = $filters;
  28
  29                 if ($this->containerInterface->hasParameter('rapsys_pack')) {
  30                         if ($parameters = $this->containerInterface->getParameter('rapsys_pack')) {
  31                                 if (isset($parameters['timeout'])) {
  32                                         $timeout = $parameters['timeout'];
  33                                 } elseif (isset($parameters['user_agent'])) {
  34                                         $userAgent = $parameters['user_agent'];
  35                                 } elseif (isset($parameters['redirect'])) {
  36                                         $redirect = $parameters['redirect'];
  37                                 }
  38                         }
  39                 }
  40
  41                 //Set http default timeout
  42                 $this->timeout = ini_get('default_socket_timeout');
  43                 //Set http default user agent
  44                 $this->userAgent = ini_get('user_agent');
  45                 //Set http default redirect
  46                 $this->redirect = 20;
  47
  48                 //Try to load service defaults
  49                 if ($this->containerInterface->hasParameter('rapsys_pack')) {
  50                         if ($parameters = $this->containerInterface->getParameter('rapsys_pack')) {
  51                                 if (!empty($parameters['timeout'])) {
  52                                         $this->timeout = $parameters['timeout'];
  53                                 }
  54                                 if (!empty($parameters['user_agent'])) {
  55                                         $this->userAgent = $parameters['user_agent'];
  56                                 }
  57                                 if (!empty($parameters['redirect'])) {
  58                                         $this->redirect = $parameters['redirect'];
  59                                 }
  60                         }
  61                 }
  62         }
  63
  64         public function getTag() {
  65                 return $this->tag;
  66         }
  67
  68         public function parse(\Twig_Token $token) {
  69                 $parser = $this->parser;
  70                 $stream = $this->parser->getStream();
  71
  72                 $inputs = array();
  73                 $name = 'asset_url';
  74                 $output = $this->output;
  75                 $filters = $this->filters;
  76
  77                 $content = '';
  78
  79                 while (!$stream->test(\Twig_Token::BLOCK_END_TYPE)) {
  80                         if ($stream->test(\Twig_Token::STRING_TYPE)) {
  81                                 // '@jquery', 'js/src/core/*', 'js/src/extra.js'
  82                                 $inputs[] = $stream->next()->getValue();
  83                         } elseif ($stream->test(\Twig_Token::NAME_TYPE, 'filter')) {
  84                                 // filter='yui_js'
  85                                 $stream->next();
  86                                 $stream->expect(\Twig_Token::OPERATOR_TYPE, '=');
  87                                 $filters = array_merge($filters, array_filter(array_map('trim', explode(',', $stream->expect(\Twig_Token::STRING_TYPE)->getValue()))));
  88                         } elseif ($stream->test(\Twig_Token::NAME_TYPE, 'output')) {
  89                                 // output='js/packed/*.js' OR output='js/core.js'
  90                                 $stream->next();
  91                                 $stream->expect(\Twig_Token::OPERATOR_TYPE, '=');
  92                                 $output = $stream->expect(\Twig_Token::STRING_TYPE)->getValue();
  93                         } elseif ($stream->test(\Twig_Token::NAME_TYPE, 'name')) {
  94                                 // name='core_js'
  95                                 $stream->next();
  96                                 $stream->expect(\Twig_Token::OPERATOR_TYPE, '=');
  97                                 $name = $stream->expect(\Twig_Token::STRING_TYPE)->getValue();
  98                         } else {
  99                                 $token = $stream->getCurrent();
 100                                 throw new \Twig_Error_Syntax(sprintf('Unexpected token "%s" of value "%s"', \Twig_Token::typeToEnglish($token->getType()), $token->getValue()), $token->getLine(), $stream->getSourceContext());
 101                         }
 102                 }
 103
 104                 $stream->expect(\Twig_Token::BLOCK_END_TYPE);
 105
 106                 $body = $this->parser->subparse(array($this, 'testEndTag'), true);
 107
 108                 $stream->expect(\Twig_Token::BLOCK_END_TYPE);
 109
 110                 //Replace star with sha1
 111                 if (($pos = strpos($output, '*')) !== false) {
 112                         #XXX: assetic code: substr(sha1(serialize($inputs).serialize($filters).serialize($options)), 0, 7)
 113                         $output = substr($output, 0, $pos).sha1(serialize($inputs).serialize($filters)).substr($output, $pos + 1);
 114                 }
 115
 116                 //Deal with inputs
 117                 for($k = 0; $k < count($inputs); $k++) {
 118                         //Deal with generic url
 119                         if (strpos($inputs[$k], '//') === 0) {
 120                                 //Default scheme
 121                                 $scheme = 'https://';
 122                                 //Try to load service scheme
 123                                 if ($this->containerInterface->hasParameter('rapsys_pack')) {
 124                                         if ($parameters = $this->containerInterface->getParameter('rapsys_pack')) {
 125                                                 if (isset($parameters['scheme'])) {
 126                                                         $scheme = $parameters['scheme'];
 127                                                 }
 128                                         }
 129                                 }
 130                                 //Fix url
 131                                 $inputs[$k] = $scheme.substr($inputs[$k], 2);
 132                         //Deal with non url path
 133                         } elseif (strpos($inputs[$k], '://') === false) {
 134                                 //Check if we have a bundle path
 135                                 if ($inputs[$k][0] == '@') {
 136                                         //Check that we don't have only a path
 137                                         if (($pos = strpos($inputs[$k], '/')) === false) {
 138                                                 #TODO: @jquery support (if we really want it)
 139                                                 #header('Content-Type: text/plain');
 140                                                 #var_dump($inputs);
 141                                                 #if ($inputs[0] == '@jquery') {
 142                                                 #       exit;
 143                                                 #}
 144                                                 throw new \Twig_Error_Syntax(sprintf('Invalid input path "%s"', $inputs[$k]), $token->getLine(), $stream->getSourceContext());
 145                                         }
 146                                         //Resolve bundle prefix
 147                                         $inputs[$k] = $this->fileLocator->locate(substr($inputs[$k], 0, $pos)).substr($inputs[$k], $pos + 1);
 148                                 }
 149                                 //Deal with globs
 150                                 if (strpos($inputs[$k], '*') !== false || (($a = strpos($inputs[$k], '{')) !== false && ($b = strpos($inputs[$k], ',', $a)) !== false && strpos($inputs[$k], '}', $b) !== false)) {
 151                                         //Get replacement
 152                                         $replacement = glob($inputs[$k], GLOB_NOSORT|GLOB_BRACE);
 153                                         //Check that these are working files
 154                                         foreach($replacement as $input) {
 155                                                 if (!is_file($input)) {
 156                                                         throw new \Twig_Error_Syntax(sprintf('Input path "%s" from "%s" is not a file', $input, $inputs[$k]), $token->getLine(), $stream->getSourceContext());
 157                                                 }
 158                                         }
 159                                         //Replace with glob path
 160                                         array_splice($inputs, $k, 1, $replacement);
 161                                         //Fix current key
 162                                         $k += count($replacement) - 1;
 163                                 //Check that it's a file
 164                                 } elseif (!is_file($inputs[$k])) {
 165                                         throw new \Twig_Error_Syntax(sprintf('Input path "%s" is not a file', $inputs[$k]), $token->getLine(), $stream->getSourceContext());
 166                                 }
 167                         }
 168                 }
 169
 170                 //Init context
 171                 $ctx = stream_context_create(
 172                         array(
 173                                 'http' => array(
 174                                         'timeout' => $this->timeout,
 175                                         'user_agent' => $this->userAgent,
 176                                         'redirect' => $this->redirect,
 177                                 )
 178                         )
 179                 );
 180
 181                 //Check inputs
 182                 if (!empty($inputs)) {
 183                         //Retrieve files content
 184                         foreach($inputs as $input) {
 185                                 //Try to retrieve content
 186                                 if (($data = file_get_contents($input, false, $ctx)) === false) {
 187                                         throw new \Twig_Error_Syntax(sprintf('Unable to retrieve input path "%s"', $input), $token->getLine(), $stream->getSourceContext());
 188                                 }
 189                                 //Append content
 190                                 $content .= $data;
 191                         }
 192                 } else {
 193                         #TODO: trigger error about empty inputs ?
 194                 }
 195
 196                 //Check filters
 197                 if (!empty($filters)) {
 198                         //Apply all filters
 199                         foreach($filters as $filter) {
 200                                 //Prefix with filter
 201                                 $filter = __NAMESPACE__.'\\Filter\\'.$filter;
 202                                 //Init tool object
 203                                 $tool = new $filter($this->containerInterface, $stream->getSourceContext(), $token->getLine());
 204                                 //Process content
 205                                 $content = $tool->process($content);
 206                                 //Remove object
 207                                 unset($tool);
 208                         }
 209                 } else {
 210                         #TODO: trigger error about empty filters ?
 211                 }
 212
 213                 //Create output dir on demand
 214                 if (!is_dir($parent = $dir = dirname($this->prefix.$output))) {
 215                         //XXX: set as 0777, symfony umask (0022) will reduce rights (0755)
 216                         mkdir($dir, 0777, true);
 217                 }
 218
 219                 //Send file content
 220                 //XXX: atomic rotation is required to avoid partial content in reverse cache
 221                 if (file_put_contents($this->prefix.$output.'.new', $content) === false) {
 222                         throw new \Twig_Error_Syntax(sprintf('Unable to write to: %s', $prefix.$output.'.new'), $token->getLine(), $stream->getSourceContext());
 223                 }
 224
 225                 //Remove old file
 226                 if (is_file($this->prefix.$output) && unlink($this->prefix.$output) === false) {
 227                         throw new \Twig_Error_Syntax(sprintf('Unable to unlink: %s', $prefix.$output), $token->getLine(), $stream->getSourceContext());
 228                 }
 229
 230                 //Rename it
 231                 if (rename($this->prefix.$output.'.new', $this->prefix.$output) === false) {
 232                         throw new \Twig_Error_Syntax(sprintf('Unable to rename: %s to %s', $prefix.$output.'.new', $prefix.$output), $token->getLine(), $stream->getSourceContext());
 233                 }
 234
 235                 //Retrieve asset uri
 236                 if (($output = $this->containerInterface->get('assets.packages')->getUrl($output, 'rapsys_pack')) === false) {
 237                         throw new \Twig_Error_Syntax(sprintf('Unable to get url for asset: %s with package %s', $output, 'rapsys_pack'), $token->getLine(), $stream->getSourceContext());
 238                 }
 239
 240                 //Send pack node
 241                 return new PackNode(array('value' => $body), array('inputs' => $inputs, 'filters' => $filters, 'name' => $name, 'output' => $output), $token->getLine(), $this->getTag());
 242         }
 243
 244         public function testEndTag(\Twig_Token $token) {
 245                 return $token->test(array('end'.$this->getTag()));
 246         }
 247 }