Raphaël G. Git Repositories - packbundle/blob - Twig/Filter/JPackFilter.php

   1 <?php
   2
   3 // src/Rapsys/PackBundle/Twig/Filter/JPackFilter.php
   4 namespace Rapsys\PackBundle\Twig\Filter;
   5
   6 use Rapsys\PackBundle\Twig\Filter\FilterInterface;
   7 use Symfony\Component\DependencyInjection\ContainerInterface;
   8
   9 class JPackFilter implements FilterInterface {
  10         //Default bin
  11         private $bin = 'jpack';
  12
  13         //Default compress type
  14         //XXX: can be clean, shrink, obfuscate or best
  15         private $compress = 'best';
  16
  17         //Twig template filename
  18         private $fileName;
  19
  20         //Twig template line
  21         private $line;
  22
  23         public function __construct(ContainerInterface $containerInterface, $fileName, $line) {
  24                 //Load configuration
  25                 if ($containerInterface->hasParameter('rapsys_pack_jpackfilter')) {
  26                         if ($parameters = $containerInterface->getParameter('rapsys_pack_jpackfilter')) {
  27                                 foreach($parameters as $k => $v) {
  28                                         if (isset($this->$k)) {
  29                                                 $this->$k = $v;
  30                                         }
  31                                 }
  32                         }
  33                 }
  34
  35                 //Set fileName
  36                 $this->fileName = $fileName;
  37
  38                 //Set line
  39                 $this->line = $line;
  40
  41                 //Deal with compress
  42                 if (!empty($this->compress)) {
  43                         //Append clean parameter
  44                         if ($this->compress == 'clean') {
  45                                 $this->bin .= ' --clean';
  46                         //Append shrink parameter
  47                         } elseif ($this->compress == 'shrink') {
  48                                 $this->bin .= ' --shrink';
  49                         //Append obfuscate parameter
  50                         } elseif ($this->compress == 'obfuscate') {
  51                                 $this->bin .= ' --obfuscate';
  52                         //Unknown compress type
  53                         #XXX: default compression is best
  54                         } elseif ($this->compress !== 'best') {
  55                                 //Throw an error on unknown compress
  56                                 throw new \Twig_Error(sprintf('Got unexpected compress for %s: %s', $this->bin, $this->compress), $this->line, $this->fileName);
  57                         }
  58                 }
  59         }
  60
  61         public function process($content) {
  62                 //Create descriptors
  63                 $descriptorSpec = array(
  64                         0 => array('pipe', 'r'),
  65                         1 => array('pipe', 'w'),
  66                         2 => array('pipe', 'w')
  67                 );
  68
  69                 //Open process
  70                 if (is_resource($proc = proc_open($this->bin, $descriptorSpec, $pipes))) {
  71                         //Set stderr as non blocking
  72                         stream_set_blocking($pipes[2], 0);
  73
  74                         //Send content to stdin
  75                         fwrite($pipes[0], $content);
  76
  77                         //Close stdin
  78                         fclose($pipes[0]);
  79
  80                         //Read content from stdout
  81                         if ($stdout = stream_get_contents($pipes[1])) {
  82                                 $content = $stdout;
  83                         }
  84
  85                         //Close stdout
  86                         fclose($pipes[1]);
  87
  88                         //Read content from stderr
  89                         if (($stderr = stream_get_contents($pipes[2]))) {
  90                                 throw new \Twig_Error(sprintf('Got unexpected strerr for %s: %s', $this->bin, $stderr), $this->line, $this->fileName);
  91                         }
  92
  93                         //Close stderr
  94                         fclose($pipes[2]);
  95
  96                         //Close process
  97                         if (($ret = proc_close($proc))) {
  98                                 throw new \Twig_Error(sprintf('Got unexpected non zero return code %s: %d', $this->bin, $ret), $this->line, $this->fileName);
  99                         }
 100                 }
 101
 102                 //Return content
 103                 return $content;
 104         }
 105 }