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

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