smarty_compiler.class.php

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            $output .= 'while ($_block_repeat) { ob_start(); ?>';
        } else {
            $output = '<?php $this->_block_content = ob_get_contents(); ob_end_clean(); ';
            $_out_tag_text = $this->_compile_plugin_call('block', $tag_command).'($this->_tag_stack[count($this->_tag_stack)-1][1], $this->_block_content, $this, $_block_repeat=false)';
            if ($tag_modifier != '') {
                $this->_parse_modifiers($_out_tag_text, $tag_modifier);
            }
            $output .= 'echo '.$_out_tag_text.'; } ';
			$output .= " array_pop(\$this->_tag_stack); " . $this->_pop_cacheable_state('block', $tag_command) . '?>';
        }

        return true;
    }


	/**
	 * compile custom function tag
	 *
	 * @param string $tag_command
	 * @param string $tag_args
	 * @param string $tag_modifier
     * @return string
	 */
    function _compile_custom_tag($tag_command, $tag_args, $tag_modifier)
    {		
        $this->_add_plugin('function', $tag_command);

        $_cacheable_state = $this->_push_cacheable_state('function', $tag_command);
        $attrs = $this->_parse_attrs($tag_args);
        $arg_list = $this->_compile_arg_list('function', $tag_command, $attrs, $_cache_attrs='');

	    $_return = $this->_compile_plugin_call('function', $tag_command).'(array('.implode(',', $arg_list)."), \$this)";
		if($tag_modifier != '') {
			$this->_parse_modifiers($_return, $tag_modifier);
		}
        
		if($_return != '') {
            $_return =  '<?php ' . $_cacheable_state . $_cache_attrs . 'echo ' . $_return . ';'
                . $this->_pop_cacheable_state('function', $tag_command) . "?>" . $this->_additional_newline;
		}
        
		return $_return; 
    }

	/**
	 * compile a registered object tag
	 *
	 * @param string $tag_command
	 * @param array $attrs
	 * @param string $tag_modifier
     * @return string
	 */
    function _compile_registered_object_tag($tag_command, $attrs, $tag_modifier)
    {
        if ($tag_command{0} == '/') {
            $start_tag = false;
            $tag_command = substr($tag_command, 1);
        } else {
            $start_tag = true;
        }

		list($object, $obj_comp) = explode('->', $tag_command);

        $arg_list = array();
		if(count($attrs)) {
			$_assign_var = false;
        	foreach ($attrs as $arg_name => $arg_value) {
				if($arg_name == 'assign') {
					$_assign_var = $arg_value;
					unset($attrs['assign']);
					continue;
				}
            	if (is_bool($arg_value))
                	$arg_value = $arg_value ? 'true' : 'false';
            	$arg_list[] = "'$arg_name' => $arg_value";
        	}
		}
				
        if($this->_reg_objects[$object][2]) {
            // smarty object argument format
            $args = "array(".implode(',', (array)$arg_list)."), \$this";
        } else {
            // traditional argument format
            $args = implode(',', array_values($attrs));
            if (empty($args)) {
                $args = 'null';
            }
        }

        $prefix = '';
        $postfix = '';
        $newline = '';
		if(!is_object($this->_reg_objects[$object][0])) {
			$this->_trigger_fatal_error("registered '$object' is not an object");
		} elseif(!empty($this->_reg_objects[$object][1]) && !in_array($obj_comp, $this->_reg_objects[$object][1])) {
			$this->_trigger_fatal_error("'$obj_comp' is not a registered component of object '$object'");
		} elseif(method_exists($this->_reg_objects[$object][0], $obj_comp)) {
			// method
            if(in_array($obj_comp, $this->_reg_objects[$object][3])) {
                // block method 
                if ($start_tag) {
                    $prefix = "\$this->_tag_stack[] = array('$obj_comp', $args); ";
                    $prefix .= "\$this->_reg_objects['$object'][0]->$obj_comp(\$this->_tag_stack[count(\$this->_tag_stack)-1][1], null, \$this, \$_block_repeat=true); ";
                    $prefix .= "while (\$_block_repeat) { ob_start();";
                    $return = null;
                    $postfix = '';
			} else {
                    $prefix = "\$this->_obj_block_content = ob_get_contents(); ob_end_clean(); ";
                    $return = "\$this->_reg_objects['$object'][0]->$obj_comp(\$this->_tag_stack[count(\$this->_tag_stack)-1][1], \$this->_obj_block_content, \$this, \$_block_repeat=false)";
                    $postfix = "} array_pop(\$this->_tag_stack);";
                }
            } else {
                // non-block method
                $return = "\$this->_reg_objects['$object'][0]->$obj_comp($args)";
			}
		} else {
			// property
			$return = "\$this->_reg_objects['$object'][0]->$obj_comp";
		}

        if($return != null) {
            if($tag_modifier != '') {
                $this->_parse_modifiers($return, $tag_modifier);
            }

            if(!empty($_assign_var)) {
                $output = "\$this->assign('" . $this->_dequote($_assign_var) ."',  $return);";
            } else {
                $output = 'echo ' . $return . ';';
                $newline = $this->_additional_newline;
            }
        } else {
            $output = '';
        }

        return '<?php ' . $prefix . $output . $postfix . "?>" . $newline;
    }

	/**
	 * Compile {insert ...} tag
	 *
	 * @param string $tag_args
     * @return string
	 */
    function _compile_insert_tag($tag_args)
    {
        $attrs = $this->_parse_attrs($tag_args);
        $name = $this->_dequote($attrs['name']);

        if (empty($name)) {
            $this->_syntax_error("missing insert name", E_USER_ERROR, __FILE__, __LINE__);
        }

        if (!empty($attrs['script'])) {
            $delayed_loading = true;
        } else {
            $delayed_loading = false;			
		}

        foreach ($attrs as $arg_name => $arg_value) {
            if (is_bool($arg_value))
                $arg_value = $arg_value ? 'true' : 'false';
            $arg_list[] = "'$arg_name' => $arg_value";
        }

        $this->_add_plugin('insert', $name, $delayed_loading);

		$_params = "array('args' => array(".implode(', ', (array)$arg_list)."))";
		
        return "<?php require_once(SMARTY_DIR . 'core' . DIRECTORY_SEPARATOR . 'core.run_insert_handler.php');\necho smarty_core_run_insert_handler($_params, \$this); ?>" . $this->_additional_newline;
    }

	/**
	 * Compile {include ...} tag
	 *
	 * @param string $tag_args
     * @return string
	 */
    function _compile_include_tag($tag_args)
    {
        $attrs = $this->_parse_attrs($tag_args);
        $arg_list = array();

        if (empty($attrs['file'])) {
            $this->_syntax_error("missing 'file' attribute in include tag", E_USER_ERROR, __FILE__, __LINE__);
        }

        foreach ($attrs as $arg_name => $arg_value) {
            if ($arg_name == 'file') {
                $include_file = $arg_value;
                continue;
            } else if ($arg_name == 'assign') {
                $assign_var = $arg_value;
                continue;
            }
            if (is_bool($arg_value))
                $arg_value = $arg_value ? 'true' : 'false';
            $arg_list[] = "'$arg_name' => $arg_value";
        }

        $output = '<?php ';

        if (isset($assign_var)) {
			$output .= "ob_start();\n";
        }

        $output .=  
            "\$_smarty_tpl_vars = \$this->_tpl_vars;\n";
		
		
		$_params = "array('smarty_include_tpl_file' => " . $include_file . ", 'smarty_include_vars' => array(".implode(',', (array)$arg_list)."))";
		$output .= "\$this->_smarty_include($_params);\n" .
        "\$this->_tpl_vars = \$_smarty_tpl_vars;\n" .
        "unset(\$_smarty_tpl_vars);\n";

        if (isset($assign_var)) {
			$output .= "\$this->assign(" . $assign_var . ", ob_get_contents()); ob_end_clean();\n";
        }

        $output .= ' ?>';

		return $output;

    }

	/**
	 * Compile {include ...} tag
	 *
	 * @param string $tag_args
     * @return string
	 */
    function _compile_include_php_tag($tag_args)
    {
        $attrs = $this->_parse_attrs($tag_args);

        if (empty($attrs['file'])) {
            $this->_syntax_error("missing 'file' attribute in include_php tag", E_USER_ERROR, __FILE__, __LINE__);
        }

        $assign_var = $this->_dequote($attrs['assign']);		
		$once_var = ( $attrs['once'] == 'false' ) ? 'false' : 'true';
		
    	foreach($attrs as $arg_name => $arg_value) {
        	if($arg_name != 'file' AND $arg_name != 'once' AND $arg_name != 'assign') {
            	if(is_bool($arg_value))
                	$arg_value = $arg_value ? 'true' : 'false';
            	$arg_list[] = "'$arg_name' => $arg_value";
        	}
    	}

    	$_params = "array('smarty_file' => " . $attrs['file'] . ", 'smarty_assign' => '$assign_var', 'smarty_once' => $once_var, 'smarty_include_vars' => array(".implode(',', (array)$arg_list)."))";
		
		return "<?php require_once(SMARTY_DIR . 'core' . DIRECTORY_SEPARATOR . 'core.smarty_include_php.php');\nsmarty_core_smarty_include_php($_params, \$this); ?>" . $this->_additional_newline;
    }
	

	/**
	 * Compile {section ...} tag
	 *
	 * @param string $tag_args
     * @return string
	 */
    function _compile_section_start($tag_args)
    {
        $attrs = $this->_parse_attrs($tag_args);
        $arg_list = array();

        $output = '<?php ';
        $section_name = $attrs['name'];
        if (empty($section_name)) {
            $this->_syntax_error("missing section name", E_USER_ERROR, __FILE__, __LINE__);
        }

        $output .= "if (isset(\$this->_sections[$section_name])) unset(\$this->_sections[$section_name]);\n";
        $section_props = "\$this->_sections[$section_name]";

        foreach ($attrs as $attr_name => $attr_value) {
            switch ($attr_name) {
                case 'loop':
                    $output .= "{$section_props}['loop'] = is_array(\$_loop=$attr_value) ? count(\$_loop) : max(0, (int)\$_loop); unset(\$_loop);\n";
                    break;

                case 'show':
                    if (is_bool($attr_value))
                        $show_attr_value = $attr_value ? 'true' : 'false';
                    else
                        $show_attr_value = "(bool)$attr_value";
                    $output .= "{$section_props}['show'] = $show_attr_value;\n";
                    break;

                case 'name':
                    $output .= "{$section_props}['$attr_name'] = $attr_value;\n";
                    break;

                case 'max':
                case 'start':
                    $output .= "{$section_props}['$attr_name'] = (int)$attr_value;\n";
                    break;

                case 'step':
                    $output .= "{$section_props}['$attr_name'] = ((int)$attr_value) == 0 ? 1 : (int)$attr_value;\n";
                    break;

                default:
                    $this->_syntax_error("unknown section attribute - '$attr_name'", E_USER_ERROR, __FILE__, __LINE__);
                    break;
            }
        }

        if (!isset($attrs['show']))
            $output .= "{$section_props}['show'] = true;\n";

        if (!isset($attrs['loop']))
            $output .= "{$section_props}['loop'] = 1;\n";

        if (!isset($attrs['max']))
            $output .= "{$section_props}['max'] = {$section_props}['loop'];\n";
        else
            $output .= "if ({$section_props}['max'] < 0)\n" .
                       "    {$section_props}['max'] = {$section_props}['loop'];\n";

        if (!isset($attrs['step']))
            $output .= "{$section_props}['step'] = 1;\n";

        if (!isset($attrs['start']))
            $output .= "{$section_props}['start'] = {$section_props}['step'] > 0 ? 0 : {$section_props}['loop']-1;\n";
        else {
            $output .= "if ({$section_props}['start'] < 0)\n" .
                       "    {$section_props}['start'] = max({$section_props}['step'] > 0 ? 0 : -1, {$section_props}['loop'] + {$section_props}['start']);\n" .
                       "else\n" .
                       "    {$section_props}['start'] = min({$section_props}['start'], {$section_props}['step'] > 0 ? {$section_props}['loop'] : {$section_props}['loop']-1);\n";
        }

        $output .= "if ({$section_props}['show']) {\n";
        if (!isset($attrs['start']) && !isset($attrs['step']) && !isset($attrs['max'])) {
            $output .= "    {$section_props}['total'] = {$section_props}['loop'];\n";
        } else {
            $output .= "    {$section_props}['total'] = min(ceil(({$section_props}['step'] > 0 ? {$section_props}['loop'] - {$section_props}['start'] : {$section_props}['start']+1)/abs({$section_props}['step'])), {$section_props}['max']);\n";
        }
        $output .= "    if ({$section_props}['total'] == 0)\n" .
                   "        {$section_props}['show'] = false;\n" .
                   "} else\n" .
                   "    {$section_props}['total'] = 0;\n";

        $output .= "if ({$section_props}['show']):\n";