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