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   1  <?php
   2  /**
   3   * Smarty Internal Plugin Compile Function
   4   *
   5   * Compiles the {function} {/function} tags
   6   *
   7   * @package Smarty
   8   * @subpackage Compiler
   9   * @author Uwe Tews
  10   */
  11  
  12  /**
  13   * Smarty Internal Plugin Compile Function Class
  14   *
  15   * @package Smarty
  16   * @subpackage Compiler
  17   */
  18  class Smarty_Internal_Compile_Function extends Smarty_Internal_CompileBase {
  19  
  20      /**
  21       * Attribute definition: Overwrites base class.
  22       *
  23       * @var array
  24       * @see Smarty_Internal_CompileBase
  25       */
  26      public $required_attributes = array('name');
  27      /**
  28       * Attribute definition: Overwrites base class.
  29       *
  30       * @var array
  31       * @see Smarty_Internal_CompileBase
  32       */
  33      public $shorttag_order = array('name');
  34      /**
  35       * Attribute definition: Overwrites base class.
  36       *
  37       * @var array
  38       * @see Smarty_Internal_CompileBase
  39       */
  40      public $optional_attributes = array('_any');
  41  
  42      /**
  43       * Compiles code for the {function} tag
  44       *
  45       * @param array $args array with attributes from parser
  46       * @param object $compiler compiler object
  47       * @param array $parameter array with compilation parameter
  48       * @return boolean true
  49       */
  50      public function compile($args, $compiler, $parameter)
  51      {
  52          // check and get attributes
  53          $_attr = $this->getAttributes($compiler, $args);
  54  
  55          if ($_attr['nocache'] === true) {
  56              $compiler->trigger_template_error('nocache option not allowed', $compiler->lex->taglineno);
  57          }
  58          unset($_attr['nocache']);
  59          $save = array($_attr, $compiler->parser->current_buffer,
  60              $compiler->template->has_nocache_code, $compiler->template->required_plugins);
  61          $this->openTag($compiler, 'function', $save);
  62          $_name = trim($_attr['name'], "'\"");
  63          unset($_attr['name']);
  64          // set flag that we are compiling a template function
  65          $compiler->compiles_template_function = true;
  66          $compiler->template->properties['function'][$_name]['parameter'] = array();
  67          $_smarty_tpl = $compiler->template;
  68          foreach ($_attr as $_key => $_data) {
  69              eval ('$tmp='.$_data.';');
  70              $compiler->template->properties['function'][$_name]['parameter'][$_key] = $tmp;
  71          }
  72          $compiler->smarty->template_functions[$_name]['parameter'] = $compiler->template->properties['function'][$_name]['parameter'];
  73          if ($compiler->template->caching) {
  74              $output = '';
  75          } else {
  76              $output = "<?php if (!function_exists('smarty_template_function_{$_name}')) {
  77      function smarty_template_function_{$_name}(\$_smarty_tpl,\$params) {
  78      \$saved_tpl_vars = \$_smarty_tpl->tpl_vars;
  79      foreach (\$_smarty_tpl->smarty->template_functions['{$_name}']['parameter'] as \$key => \$value) {\$_smarty_tpl->tpl_vars[\$key] = new Smarty_variable(\$value);};
  80      foreach (\$params as \$key => \$value) {\$_smarty_tpl->tpl_vars[\$key] = new Smarty_variable(\$value);}?>";
  81          }
  82          // Init temporay context
  83          $compiler->template->required_plugins = array('compiled' => array(), 'nocache' => array());
  84          $compiler->parser->current_buffer = new _smarty_template_buffer($compiler->parser);
  85          $compiler->parser->current_buffer->append_subtree(new _smarty_tag($compiler->parser, $output));
  86          $compiler->template->has_nocache_code = false;
  87          $compiler->has_code = false;
  88          $compiler->template->properties['function'][$_name]['compiled'] = '';
  89          return true;
  90      }
  91  
  92  }
  93  
  94  /**
  95   * Smarty Internal Plugin Compile Functionclose Class
  96   *
  97   * @package Smarty
  98   * @subpackage Compiler
  99   */
 100  class Smarty_Internal_Compile_Functionclose extends Smarty_Internal_CompileBase {
 101  
 102      /**
 103       * Compiles code for the {/function} tag
 104       *
 105       * @param array $args array with attributes from parser
 106       * @param object $compiler compiler object
 107       * @param array $parameter array with compilation parameter
 108       * @return boolean true
 109       */
 110      public function compile($args, $compiler, $parameter)
 111      {
 112          $_attr = $this->getAttributes($compiler, $args);
 113          $saved_data = $this->closeTag($compiler, array('function'));
 114          $_name = trim($saved_data[0]['name'], "'\"");
 115          // build plugin include code
 116          $plugins_string = '';
 117          if (!empty($compiler->template->required_plugins['compiled'])) {
 118              $plugins_string = '<?php ';
 119              foreach($compiler->template->required_plugins['compiled'] as $tmp) {
 120                  foreach($tmp as $data) {
 121                      $plugins_string .= "if (!is_callable('{$data['function']}')) include '{$data['file']}';\n";
 122                  }
 123              }
 124              $plugins_string .= '?>';
 125          }
 126          if (!empty($compiler->template->required_plugins['nocache'])) {
 127              $plugins_string .= "<?php echo '/*%%SmartyNocache:{$compiler->template->properties['nocache_hash']}%%*/<?php ";
 128              foreach($compiler->template->required_plugins['nocache'] as $tmp) {
 129                  foreach($tmp as $data) {
 130                      $plugins_string .= "if (!is_callable(\'{$data['function']}\')) include \'{$data['file']}\';\n";
 131                  }
 132              }
 133              $plugins_string .= "?>/*/%%SmartyNocache:{$compiler->template->properties['nocache_hash']}%%*/';?>\n";
 134          }
 135           // remove last line break from function definition
 136           $last = count($compiler->parser->current_buffer->subtrees) - 1;
 137           if ($compiler->parser->current_buffer->subtrees[$last] instanceof _smarty_linebreak) {
 138               unset($compiler->parser->current_buffer->subtrees[$last]);
 139           }
 140          // if caching save template function for possible nocache call
 141          if ($compiler->template->caching) {
 142              $compiler->template->properties['function'][$_name]['compiled'] .= $plugins_string
 143               . $compiler->parser->current_buffer->to_smarty_php();
 144              $compiler->template->properties['function'][$_name]['nocache_hash'] = $compiler->template->properties['nocache_hash'];
 145              $compiler->template->properties['function'][$_name]['has_nocache_code'] = $compiler->template->has_nocache_code;
 146              $compiler->template->properties['function'][$_name]['called_functions'] = $compiler->called_functions;
 147              $compiler->called_functions = array();
 148              $compiler->smarty->template_functions[$_name] = $compiler->template->properties['function'][$_name];
 149              $compiler->has_code = false;
 150              $output = true;
 151          } else {
 152              $output = $plugins_string . $compiler->parser->current_buffer->to_smarty_php() . "<?php \$_smarty_tpl->tpl_vars = \$saved_tpl_vars;}}?>\n";
 153          }
 154          // reset flag that we are compiling a template function
 155          $compiler->compiles_template_function = false;
 156          // restore old compiler status
 157          $compiler->parser->current_buffer = $saved_data[1];
 158          $compiler->template->has_nocache_code = $compiler->template->has_nocache_code | $saved_data[2];
 159          $compiler->template->required_plugins = $saved_data[3];
 160          return $output;
 161      }
 162  
 163  }
 164  
 165  ?>