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 string        $tool                   The tool path
  20          */
  21         public function __construct(FileLocator $fileLocator, ContainerInterface $containerInterface, $prefix, $tag, $output, $tool = null) {
  22                 $this->fileLocator              = $fileLocator;
  23                 $this->containerInterface       = $containerInterface;
  24                 $this->prefix                   = $prefix;
  25                 $this->tag                      = $tag;
  26                 $this->output                   = $output;
  27                 $this->tool                     = $tool;
  28         }
  29
  30         public function getTag() {
  31                 return $this->tag;
  32         }
  33
  34         public function parse(\Twig_Token $token) {
  35                 $parser = $this->parser;
  36                 $stream = $this->parser->getStream();
  37
  38                 $inputs = array();
  39                 $filters = array();
  40                 $name = 'asset_url';
  41                 $output = $this->output;
  42
  43                 $content = '';
  44
  45                 while (!$stream->test(\Twig_Token::BLOCK_END_TYPE)) {
  46                         if ($stream->test(\Twig_Token::STRING_TYPE)) {
  47                                 // '@jquery', 'js/src/core/*', 'js/src/extra.js'
  48                                 $inputs[] = $stream->next()->getValue();
  49                         } elseif ($stream->test(\Twig_Token::NAME_TYPE, 'filter')) {
  50                                 // filter='yui_js'
  51                                 $stream->next();
  52                                 $stream->expect(\Twig_Token::OPERATOR_TYPE, '=');
  53                                 $filters = array_merge($filters, array_filter(array_map('trim', explode(',', $stream->expect(\Twig_Token::STRING_TYPE)->getValue()))));
  54                         } elseif ($stream->test(\Twig_Token::NAME_TYPE, 'output')) {
  55                                 // output='js/packed/*.js' OR output='js/core.js'
  56                                 $stream->next();
  57                                 $stream->expect(\Twig_Token::OPERATOR_TYPE, '=');
  58                                 $output = $stream->expect(\Twig_Token::STRING_TYPE)->getValue();
  59                         } elseif ($stream->test(\Twig_Token::NAME_TYPE, 'name')) {
  60                                 // name='core_js'
  61                                 $stream->next();
  62                                 $stream->expect(\Twig_Token::OPERATOR_TYPE, '=');
  63                                 $name = $stream->expect(\Twig_Token::STRING_TYPE)->getValue();
  64                         } else {
  65                                 $token = $stream->getCurrent();
  66                                 throw new \Twig_Error_Syntax(sprintf('Unexpected token "%s" of value "%s"', \Twig_Token::typeToEnglish($token->getType()), $token->getValue()), $token->getLine(), $stream->getFilename());
  67                         }
  68                 }
  69
  70                 $stream->expect(\Twig_Token::BLOCK_END_TYPE);
  71
  72                 $body = $this->parser->subparse(array($this, 'testEndTag'), true);
  73
  74                 $stream->expect(\Twig_Token::BLOCK_END_TYPE);
  75
  76                 //Replace star with sha1
  77                 if (($pos = strpos($output, '*')) !== false) {
  78                         #XXX: assetic code : substr(sha1(serialize($inputs).serialize($filters).serialize($options)), 0, 7)
  79                         $output = substr($output, 0, $pos).sha1(serialize($inputs).serialize($filters)).substr($output, $pos + 1);
  80                 }
  81
  82                 //Deal with inputs
  83                 for($k = 0; $k < count($inputs); $k++) {
  84                         //Deal with generic url
  85                         if (strpos($inputs[$k], '//') === 0) {
  86                                 //TODO: set this as a parameter (scheme)
  87                                 $inputs[$k] = 'https:'.$inputs[$k];
  88                         //Deal with non url path
  89                         } elseif (strpos($inputs[$k], '://') === false) {
  90                                 //Check if we have a bundle path
  91                                 if ($inputs[$k][0] == '@') {
  92                                         if (($pos = strpos($inputs[$k], '/')) === false) {
  93                                                 throw new \Twig_Error_Syntax(sprintf('Invalid input path "%s"', $inputs[$k]), $token->getLine(), $stream->getFilename());
  94                                         }
  95                                         //Extract prefix
  96                                         #$inputs[$k] = $this->kernel->locateResource(substr($inputs[$k], 0, $pos)).substr($inputs[$k], $pos + 1);
  97                                         $inputs[$k] = $this->fileLocator->locate(substr($inputs[$k], 0, $pos)).substr($inputs[$k], $pos + 1);
  98                                 }
  99                                 //Deal with globs
 100                                 if (strpos($inputs[$k], '*') !== false || (($a = strpos($inputs[$k], '{')) !== false && ($b = strpos($inputs[$k], ',', $a)) !== false && strpos($inputs[$k], '}', $b) !== false)) {
 101                                         //Get replacement
 102                                         $replacement = glob($inputs[$k], GLOB_NOSORT|GLOB_BRACE);
 103                                         //Check that these are working files
 104                                         foreach($replacement as $input) {
 105                                                 if (!is_file($input)) {
 106                                                         throw new \Twig_Error_Syntax(sprintf('Input path "%s" from "%s" is not a file', $input, $inputs[$k]), $token->getLine(), $stream->getFilename());
 107                                                 }
 108                                         }
 109                                         //Replace with glob path
 110                                         array_splice($inputs, $k, 1, $replacement);
 111                                         //Fix current key
 112                                         $k += count($replacement) - 1;
 113                                 //Check that it's a file
 114                                 } elseif (!is_file($inputs[$k])) {
 115                                         throw new \Twig_Error_Syntax(sprintf('Input path "%s" is not a file', $inputs[$k]), $token->getLine(), $stream->getFilename());
 116                                 }
 117                         }
 118                 }
 119
 120                 //Retrieve files content
 121                 foreach($inputs as $input) {
 122                         //Set timeout
 123                         $ctx = stream_context_create(
 124                                 array(
 125                                         'http' => array(
 126                                                 'timeout' => 5
 127                                         )
 128                                 )
 129                         );
 130                         //Try to retrieve content
 131                         if (($data = file_get_contents($input, false, $ctx)) === false) {
 132                                 throw new \Twig_Error_Syntax(sprintf('Unable to retrieve input path "%s"', $input), $token->getLine(), $stream->getFilename());
 133                         }
 134                         //Append content
 135                         $content .= $data;
 136                 }
 137
 138                 //Use tool
 139                 if (!empty($this->tool) && is_executable($this->tool)) {
 140                         $descriptorSpec = array(
 141                                 0 => array('pipe', 'r'),
 142                                 1 => array('pipe', 'w'),
 143                                 2 => array('pipe', 'w')
 144                         );
 145                         if (is_resource($proc = proc_open($this->tool, $descriptorSpec, $pipes))) {
 146                                 //Set stderr as non blocking
 147                                 stream_set_blocking($pipes[2], 0);
 148                                 //Send content to stdin
 149                                 fwrite($pipes[0], $content);
 150                                 //Close stdin
 151                                 fclose($pipes[0]);
 152                                 //Read content from stdout
 153                                 if ($stdout = stream_get_contents($pipes[1])) {
 154                                         $content = $stdout;
 155                                 }
 156                                 //Close stdout
 157                                 fclose($pipes[1]);
 158                                 //Read content from stderr
 159                                 if ($stderr = stream_get_contents($pipes[2])) {
 160                                         throw new \Twig_Error_Syntax(sprintf('Got unexpected strerr for %s: %s', $this->tool, $stderr), $token->getLine(), $stream->getFilename());
 161                                 }
 162                                 //Close stderr
 163                                 fclose($pipes[2]);
 164                                 //Close process
 165                                 if ($ret = proc_close($proc)) {
 166                                         throw new \Twig_Error_Syntax(sprintf('Got unexpected non zero return code %s: %d', $this->tool, $ret), $token->getLine(), $stream->getFilename());
 167                                 }
 168                         }
 169                 }
 170
 171                 //Create output dir on demand
 172                 if (!is_dir($parent = $dir = dirname($this->prefix.$output))) {
 173                         //XXX: set as 0777, symfony umask (0022) will reduce rights (0755)
 174                         mkdir($dir, 0777, true);
 175                 }
 176
 177                 //Send file content
 178                 //TODO: see if atomic rotation is really necessary ?
 179                 //XXX: version management is done via rapsys_pack configuration atomic should be useless
 180                 //TODO: implement asset versionning or re-use internal functions
 181                 if (file_put_contents($this->prefix.$output.'.new', $content) === false) {
 182                         throw new \Twig_Error_Syntax(sprintf('Unable to write to: %s', $prefix.$output.'.new'), $token->getLine(), $stream->getFilename());
 183                 }
 184
 185                 //Remove old file
 186                 if (is_file($this->prefix.$output) && unlink($this->prefix.$output) === false) {
 187                         throw new \Twig_Error_Syntax(sprintf('Unable to unlink: %s', $prefix.$output), $token->getLine(), $stream->getFilename());
 188                 }
 189
 190                 //Rename it
 191                 if (rename($this->prefix.$output.'.new', $this->prefix.$output) === false) {
 192                         throw new \Twig_Error_Syntax(sprintf('Unable to rename: %s to %s', $prefix.$output.'.new', $prefix.$output), $token->getLine(), $stream->getFilename());
 193                 }
 194
 195                 //Retrieve asset uri
 196                 if (($output = $this->containerInterface->get('assets.packages')->getUrl($output, 'rapsys_pack')) === false) {
 197                         throw new \Twig_Error_Syntax(sprintf('Unable to get url for asset: %s with package %s', $output, 'rapsys_pack'), $token->getLine(), $stream->getFilename());
 198                 }
 199
 200                 //Send pack node
 201                 return new PackNode(array('value' => $body), array('inputs' => $inputs, 'filters' => $filters, 'name' => $name, 'output' => $output), $token->getLine(), $this->getTag());
 202         }
 203
 204         public function testEndTag(\Twig_Token $token) {
 205                 return $token->test(array('end'.$this->getTag()));
 206         }
 207 }