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 use Symfony\Component\Asset\Packages;
   8
   9 class PackTokenParser extends \Twig_TokenParser {
  10         private $tag;
  11
  12         /**
  13          * Constructor.
  14          *
  15          * @param class         $fileLocator            The FileLocator instance
  16          * @param class         $containerInterface     The Container Interface instance
  17          * @param class         $assetsPackages         The Assets Packages instance
  18          * @param string        $prefix                 The prefix path
  19          * @param string        $tag                    The tag name
  20          * @param string        $output                 The default output string
  21          * @param array         $filters                The default filters array
  22          */
  23         public function __construct(FileLocator $fileLocator, ContainerInterface $containerInterface, Packages $assetsPackages, $prefix, $tag, $output, $filters) {
  24                 $this->fileLocator              = $fileLocator;
  25                 $this->containerInterface       = $containerInterface;
  26                 $this->assetsPackages           = $assetsPackages;
  27                 $this->prefix                   = $prefix;
  28                 $this->tag                      = $tag;
  29                 $this->output                   = $output;
  30                 $this->filters                  = $filters;
  31
  32                 if ($this->containerInterface->hasParameter('rapsys_pack')) {
  33                         if ($parameters = $this->containerInterface->getParameter('rapsys_pack')) {
  34                                 if (isset($parameters['timeout'])) {
  35                                         $timeout = $parameters['timeout'];
  36                                 } elseif (isset($parameters['user_agent'])) {
  37                                         $userAgent = $parameters['user_agent'];
  38                                 } elseif (isset($parameters['redirect'])) {
  39                                         $redirect = $parameters['redirect'];
  40                                 }
  41                         }
  42                 }
  43
  44                 //Set http default timeout
  45                 $this->timeout = ini_get('default_socket_timeout');
  46                 //Set http default user agent
  47                 $this->userAgent = ini_get('user_agent');
  48                 //Set http default redirect
  49                 $this->redirect = 20;
  50
  51                 //Try to load service defaults
  52                 if ($this->containerInterface->hasParameter('rapsys_pack')) {
  53                         if ($parameters = $this->containerInterface->getParameter('rapsys_pack')) {
  54                                 if (!empty($parameters['timeout'])) {
  55                                         $this->timeout = $parameters['timeout'];
  56                                 }
  57                                 if (!empty($parameters['user_agent'])) {
  58                                         $this->userAgent = $parameters['user_agent'];
  59                                 }
  60                                 if (!empty($parameters['redirect'])) {
  61                                         $this->redirect = $parameters['redirect'];
  62                                 }
  63                         }
  64                 }
  65         }
  66
  67         public function getTag() {
  68                 return $this->tag;
  69         }
  70
  71         public function parse(\Twig_Token $token) {
  72                 $parser = $this->parser;
  73                 $stream = $this->parser->getStream();
  74
  75                 $inputs = array();
  76                 $name = 'asset_url';
  77                 $output = $this->output;
  78                 $filters = $this->filters;
  79
  80                 $content = '';
  81
  82                 while (!$stream->test(\Twig_Token::BLOCK_END_TYPE)) {
  83                         if ($stream->test(\Twig_Token::STRING_TYPE)) {
  84                                 // '@jquery', 'js/src/core/*', 'js/src/extra.js'
  85                                 $inputs[] = $stream->next()->getValue();
  86                         } elseif ($stream->test(\Twig_Token::NAME_TYPE, 'filter')) {
  87                                 // filter='yui_js'
  88                                 $stream->next();
  89                                 $stream->expect(\Twig_Token::OPERATOR_TYPE, '=');
  90                                 $filters = array_merge($filters, array_filter(array_map('trim', explode(',', $stream->expect(\Twig_Token::STRING_TYPE)->getValue()))));
  91                         } elseif ($stream->test(\Twig_Token::NAME_TYPE, 'output')) {
  92                                 // output='js/packed/*.js' OR output='js/core.js'
  93                                 $stream->next();
  94                                 $stream->expect(\Twig_Token::OPERATOR_TYPE, '=');
  95                                 $output = $stream->expect(\Twig_Token::STRING_TYPE)->getValue();
  96                         } elseif ($stream->test(\Twig_Token::NAME_TYPE, 'name')) {
  97                                 // name='core_js'
  98                                 $stream->next();
  99                                 $stream->expect(\Twig_Token::OPERATOR_TYPE, '=');
 100                                 $name = $stream->expect(\Twig_Token::STRING_TYPE)->getValue();
 101                         } else {
 102                                 $token = $stream->getCurrent();
 103                                 throw new \Twig_Error_Syntax(sprintf('Unexpected token "%s" of value "%s"', \Twig_Token::typeToEnglish($token->getType()), $token->getValue()), $token->getLine(), $stream->getSourceContext());
 104                         }
 105                 }
 106
 107                 $stream->expect(\Twig_Token::BLOCK_END_TYPE);
 108
 109                 $body = $this->parser->subparse(array($this, 'testEndTag'), true);
 110
 111                 $stream->expect(\Twig_Token::BLOCK_END_TYPE);
 112
 113                 //Replace star with sha1
 114                 if (($pos = strpos($output, '*')) !== false) {
 115                         #XXX: assetic code: substr(sha1(serialize($inputs).serialize($filters).serialize($options)), 0, 7)
 116                         $output = substr($output, 0, $pos).sha1(serialize($inputs).serialize($filters)).substr($output, $pos + 1);
 117                 }
 118
 119                 //Deal with inputs
 120                 for($k = 0; $k < count($inputs); $k++) {
 121                         //Deal with generic url
 122                         if (strpos($inputs[$k], '//') === 0) {
 123                                 //Default scheme
 124                                 $scheme = 'https://';
 125                                 //Try to load service scheme
 126                                 if ($this->containerInterface->hasParameter('rapsys_pack')) {
 127                                         if ($parameters = $this->containerInterface->getParameter('rapsys_pack')) {
 128                                                 if (isset($parameters['scheme'])) {
 129                                                         $scheme = $parameters['scheme'];
 130                                                 }
 131                                         }
 132                                 }
 133                                 //Fix url
 134                                 $inputs[$k] = $scheme.substr($inputs[$k], 2);
 135                         //Deal with non url path
 136                         } elseif (strpos($inputs[$k], '://') === false) {
 137                                 //Check if we have a bundle path
 138                                 if ($inputs[$k][0] == '@') {
 139                                         //Check that we don't have only a path
 140                                         if (($pos = strpos($inputs[$k], '/')) === false) {
 141                                                 #TODO: @jquery support (if we really want it)
 142                                                 #header('Content-Type: text/plain');
 143                                                 #var_dump($inputs);
 144                                                 #if ($inputs[0] == '@jquery') {
 145                                                 #       exit;
 146                                                 #}
 147                                                 throw new \Twig_Error_Syntax(sprintf('Invalid input path "%s"', $inputs[$k]), $token->getLine(), $stream->getSourceContext());
 148                                         }
 149                                         //Resolve bundle prefix
 150                                         $inputs[$k] = $this->fileLocator->locate(substr($inputs[$k], 0, $pos)).substr($inputs[$k], $pos + 1);
 151                                 }
 152                                 //Deal with globs
 153                                 if (strpos($inputs[$k], '*') !== false || (($a = strpos($inputs[$k], '{')) !== false && ($b = strpos($inputs[$k], ',', $a)) !== false && strpos($inputs[$k], '}', $b) !== false)) {
 154                                         //Get replacement
 155                                         $replacement = glob($inputs[$k], GLOB_NOSORT|GLOB_BRACE);
 156                                         //Check that these are working files
 157                                         foreach($replacement as $input) {
 158                                                 if (!is_file($input)) {
 159                                                         throw new \Twig_Error_Syntax(sprintf('Input path "%s" from "%s" is not a file', $input, $inputs[$k]), $token->getLine(), $stream->getSourceContext());
 160                                                 }
 161                                         }
 162                                         //Replace with glob path
 163                                         array_splice($inputs, $k, 1, $replacement);
 164                                         //Fix current key
 165                                         $k += count($replacement) - 1;
 166                                 //Check that it's a file
 167                                 } elseif (!is_file($inputs[$k])) {
 168                                         throw new \Twig_Error_Syntax(sprintf('Input path "%s" is not a file', $inputs[$k]), $token->getLine(), $stream->getSourceContext());
 169                                 }
 170                         }
 171                 }
 172
 173                 //Init context
 174                 $ctx = stream_context_create(
 175                         array(
 176                                 'http' => array(
 177                                         'timeout' => $this->timeout,
 178                                         'user_agent' => $this->userAgent,
 179                                         'redirect' => $this->redirect,
 180                                 )
 181                         )
 182                 );
 183
 184                 //Check inputs
 185                 if (!empty($inputs)) {
 186                         //Retrieve files content
 187                         foreach($inputs as $input) {
 188                                 //Try to retrieve content
 189                                 if (($data = file_get_contents($input, false, $ctx)) === false) {
 190                                         throw new \Twig_Error_Syntax(sprintf('Unable to retrieve input path "%s"', $input), $token->getLine(), $stream->getSourceContext());
 191                                 }
 192                                 //Append content
 193                                 $content .= $data;
 194                         }
 195                 } else {
 196                         #TODO: trigger error about empty inputs ?
 197                 }
 198
 199                 //Check filters
 200                 if (!empty($filters)) {
 201                         //Apply all filters
 202                         foreach($filters as $filter) {
 203                                 //Prefix with filter
 204                                 $filter = __NAMESPACE__.'\\Filter\\'.$filter;
 205                                 //Init tool object
 206                                 $tool = new $filter($this->containerInterface, $stream->getSourceContext(), $token->getLine());
 207                                 //Process content
 208                                 $content = $tool->process($content);
 209                                 //Remove object
 210                                 unset($tool);
 211                         }
 212                 } else {
 213                         #TODO: trigger error about empty filters ?
 214                 }
 215
 216                 //Create output dir on demand
 217                 if (!is_dir($parent = $dir = dirname($this->prefix.$output))) {
 218                         //XXX: set as 0777, symfony umask (0022) will reduce rights (0755)
 219                         try {
 220                                 mkdir($dir, 0777, true);
 221                         } catch (\Exception $e) {
 222                                 throw new \Twig_Error_Syntax(sprintf('Unable to create directory: %s', $dir), $token->getLine(), $stream->getSourceContext());
 223                         }
 224                 }
 225
 226                 //Send file content
 227                 //XXX: atomic rotation is required to avoid partial content in reverse cache
 228                 if (file_put_contents($this->prefix.$output.'.new', $content) === false) {
 229                         throw new \Twig_Error_Syntax(sprintf('Unable to write to: %s', $prefix.$output.'.new'), $token->getLine(), $stream->getSourceContext());
 230                 }
 231
 232                 //Remove old file
 233                 if (is_file($this->prefix.$output) && unlink($this->prefix.$output) === false) {
 234                         throw new \Twig_Error_Syntax(sprintf('Unable to unlink: %s', $prefix.$output), $token->getLine(), $stream->getSourceContext());
 235                 }
 236
 237                 //Rename it
 238                 if (rename($this->prefix.$output.'.new', $this->prefix.$output) === false) {
 239                         throw new \Twig_Error_Syntax(sprintf('Unable to rename: %s to %s', $prefix.$output.'.new', $prefix.$output), $token->getLine(), $stream->getSourceContext());
 240                 }
 241
 242                 //Retrieve asset uri
 243                 if (($output = $this->assetsPackages->getUrl($output, 'rapsys_pack')) === false) {
 244                         throw new \Twig_Error_Syntax(sprintf('Unable to get url for asset: %s with package %s', $output, 'rapsys_pack'), $token->getLine(), $stream->getSourceContext());
 245                 }
 246
 247                 //Send pack node
 248                 return new PackNode(array('value' => $body), array('inputs' => $inputs, 'filters' => $filters, 'name' => $name, 'output' => $output), $token->getLine(), $this->getTag());
 249         }
 250
 251         public function testEndTag(\Twig_Token $token) {
 252                 return $token->test(array('end'.$this->getTag()));
 253         }
 254 }