Handler.php

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<?php

namespace Rsi\Fred\Minify;

class Handler extends \Rsi\Thing{

  protected $_minify;
  protected $_config = null;

  public function __construct($minify,$config){
    $this->_minify = $minify;
    $this->configure($this->_config = $config);
    $this->init();
  }

  protected function init(){
  }
  /**
   * Minify a source string.
   * @param string $source  Source to minify.
   * @param string $filename  Optional source filename for use in error messages.
   * @return string  Minified source.
   */
  public function source($source,$filename = null){
    return trim(preg_replace('/\\s*[\\r\\n]\\s*/','',preg_replace('/\\/\\*.*?\\*\\//s','',$source)));
  }
  /**
   * Minify a source file.
   * @param string $source  Source filename.
   * @param string $target  Target filename (when empty, and a cache is definied, a filename will be generated).
   * @return string  Target filename (false on error).
   */
  public function file($source,$target = null){
    if(!$target) $target = $this->_minify->cacheTarget($source);
    if(!$target) return false;
    if($this->_minify->filemtime($target) < $this->_minify->filemtime($source)){
      if($this->_minify->alreadyMinimized($source)) copy($source,$target);
      else \Rsi\File::write($target,$this->source(file_get_contents($source),$source),0666);
    }
    return $target;
  }
  /**
   * Minify and combine multiple source files.
   * @param array $sources  Source filenames.
   * @param string $target  Target filename (when empty, and a cache is definied, a filename will be generated).
   * @return string  Target filename (false on error).
   */
  public function files($sources,$target = null){
    if(!$target) $target = $this->_minify->cacheTarget(implode('|',$sources));
    if(!$target) return false;
    $time = 0;
    $targets = [];
    foreach($sources as $source) $time = max($time,$this->_minify->filemtime($targets[] = $this->file($source)));
    if($this->_minify->filemtime($target) < $time) foreach(array_values($targets) as $index => $source)
      \Rsi\File::write($target,file_get_contents($source) . "\n",0666,$index);
    return $target;
  }

}