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   1  <?php
   2  /*
   3   * Limb PHP Framework
   4   *
   5   * @link http://limb-project.com 
   6   * @copyright  Copyright &copy; 2004-2007 BIT(http://bit-creative.com)
   7   * @license    LGPL http://www.gnu.org/copyleft/lesser.html 
   8   */
   9  
  10  /**

  11   * class lmbMacroTemplate.

  12   *

  13   * @package macro

  14   * @version $Id$

  15   */
  16  class lmbMacroTemplate
  17  {
  18    protected $file;
  19    protected $cache_dir;
  20    protected $vars = array();
  21    protected $includes = array();
  22  
  23    function __construct($file, $cache_dir)
  24    {
  25      $this->file = $file;
  26      $this->cache_dir = $cache_dir;
  27    }
  28  
  29    function set($name, $value)
  30    {
  31      $this->vars[$name] = $value;
  32    }
  33  
  34    function render()
  35    {
  36      ob_start();
  37      $file = $this->_compile($class);
  38      include($file);
  39      $body = new $class($this->vars);
  40      $body->paint();
  41      $out = ob_get_contents();
  42      ob_end_clean();
  43      return $out;
  44    }
  45  
  46    protected function _compile(&$class_name)
  47    {
  48      $contents = file_get_contents($this->file);
  49      $prefix = 'p' . md5($this->file);
  50      $class_name = "{$prefix}Body";
  51      
  52      $this->_processVars($contents);
  53      $body = $this->_generateBody($class_name, $contents);
  54  
  55      $compiled_file = $this->cache_dir . '/' . $prefix . '.php';
  56      file_put_contents($compiled_file, $body, LOCK_EX);
  57      return $compiled_file;
  58    }
  59  
  60    protected function _generateBody($class_name, $contents)
  61    {
  62      $include_methods = '';
  63      foreach($this->includes as $name => $body)
  64        $include_methods .= "$body\n";
  65  
  66      $code = <<<EOD
  67  <?php
  68  class {$class_name}
  69  {
  70    protected \$vars = array();
  71  
  72    function __construct(\$vars)
  73    {
  74      \$this->vars = \$vars;
  75    }
  76  
  77    function __get(\$name)
  78    {
  79      if(isset(\$this->vars[\$name]))
  80        return \$this->vars[\$name];
  81    }
  82  
  83    $include_methods
  84  
  85    function paint(){ ?>$contents<?php }
  86  }
  87  ?>
  88  EOD;
  89    return $code;
  90    }
  91  
  92    protected function _processVars(&$contents)
  93    {
  94      $contents = str_replace('<?=', '<?php echo ', $contents);
  95      $contents = preg_replace('~<\?(?!php|=)~', '<?php ', $contents);    
  96      $contents = str_replace('@$', '$this->', $contents);
  97      $contents = preg_replace_callback('~\{(\$[^\W]+)\}~', array($this, '_varSugarCallback'), $contents);
  98      $contents = preg_replace_callback('~\{([^\W]+\([^\}]+)\}~', array($this, '_functionSugarCallback'), $contents);
  99    }
 100  
 101    protected function _varSugarCallback($matches)
 102    {
 103      return '<?php echo ' . $matches[1] . ' ?>';
 104    }
 105  
 106    protected function _functionSugarCallback($matches)
 107    {
 108      return '<?php echo ' . $matches[1] . ' ?>';
 109    }
 110  
 111    protected function _includeCallback($matches)
 112    {
 113      if(!preg_match('~file=(?:"|\')([^"\']+)(?:"|\')~', $matches[0], $m))
 114        throw new lmbException('Invalid <%INCLUDE..>: ' . $matches[0]);
 115  
 116      $file = lmbFs :: normalizePath($m[1]);
 117  
 118      $args = '';
 119      if(preg_match('~args=(?:"|\')\(([^\)]+)\)(?:"|\')~', $matches[0], $m))
 120        $args = $m[1];
 121  
 122      $contents = file_get_contents($file);
 123      $this->_processIncludes($contents);
 124      $method_name = 'paintInclude' . sizeof($this->includes);
 125      $method_body = "function $method_name(){ \$args = func_get_args();extract(\$args);?>$contents<?php }";
 126  
 127      $this->includes[$method_name] = $method_body;
 128  
 129      return "<?php \$this->$method_name(array($args)); ?>";
 130    }
 131  }
 132  ?>