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

   1 <?php declare(strict_types=1);
   2
   3 /*
   4  * This file is part of the Rapsys PackBundle package.
   5  *
   6  * (c) Raphaël Gertz <symfony@rapsys.eu>
   7  *
   8  * For the full copyright and license information, please view the LICENSE
   9  * file that was distributed with this source code.
  10  */
  11
  12 namespace Rapsys\PackBundle\Filter;
  13
  14 use Twig\Error\Error;
  15 use Twig\Source;
  16
  17 /**
  18  * {@inheritdoc}
  19  */
  20 class JPackFilter implements FilterInterface {
  21         //Default bin
  22         private $bin;
  23
  24         //Default compress type
  25         private $compress;
  26
  27         //Twig template filename
  28         private $fileName;
  29
  30         //Twig template line
  31         private $line;
  32
  33         /**
  34          * Setup jpack filter
  35          *
  36          * @xxx compress can be clean, shrink, obfuscate or best
  37          */
  38         public function __construct(Source $fileName, int $line, string $bin = 'jpack', string $compress = 'best') {
  39                 //Set fileName
  40                 $this->fileName = $fileName;
  41
  42                 //Set line
  43                 $this->line = $line;
  44
  45                 //Set bin
  46                 $this->bin = $bin;
  47
  48                 //Set compress
  49                 $this->compress = $compress;
  50
  51                 //Deal with compress
  52                 if (!empty($this->compress)) {
  53                         //Append clean parameter
  54                         if ($this->compress == 'clean') {
  55                                 $this->bin .= ' --clean';
  56                         //Append shrink parameter
  57                         } elseif ($this->compress == 'shrink') {
  58                                 $this->bin .= ' --shrink';
  59                         //Append obfuscate parameter
  60                         } elseif ($this->compress == 'obfuscate') {
  61                                 $this->bin .= ' --obfuscate';
  62                         //Unknown compress type
  63                         //XXX: default compression is best
  64                         } elseif ($this->compress !== 'best') {
  65                                 //Throw an error on unknown compress
  66                                 throw new Error(sprintf('Got unexpected compress for %s: %s', $this->bin, $this->compress), $this->line, $this->fileName);
  67                         }
  68                 }
  69         }
  70
  71         /**
  72          * {@inheritdoc}
  73          */
  74         public function process(string $content): string {
  75                 //Create descriptors
  76                 $descriptorSpec = array(
  77                         0 => array('pipe', 'r'),
  78                         1 => array('pipe', 'w'),
  79                         2 => array('pipe', 'w')
  80                 );
  81
  82                 //Open process
  83                 if (is_resource($proc = proc_open($this->bin, $descriptorSpec, $pipes))) {
  84                         //Set stderr as non blocking
  85                         stream_set_blocking($pipes[2], false);
  86
  87                         //Send content to stdin
  88                         fwrite($pipes[0], $content);
  89
  90                         //Close stdin
  91                         fclose($pipes[0]);
  92
  93                         //Read content from stdout
  94                         if ($stdout = stream_get_contents($pipes[1])) {
  95                                 $content = $stdout;
  96                         }
  97
  98                         //Close stdout
  99                         fclose($pipes[1]);
 100
 101                         //Read content from stderr
 102                         if (($stderr = stream_get_contents($pipes[2]))) {
 103                                 throw new Error(sprintf('Got unexpected strerr for %s: %s', $this->bin, $stderr), $this->line, $this->fileName);
 104                         }
 105
 106                         //Close stderr
 107                         fclose($pipes[2]);
 108
 109                         //Close process
 110                         if (($ret = proc_close($proc))) {
 111                                 throw new Error(sprintf('Got unexpected non zero return code %s: %d', $this->bin, $ret), $this->line, $this->fileName);
 112                         }
 113                 }
 114
 115                 //Return content
 116                 return $content;
 117         }
 118 }