File io/template/parser/syntax/LoopTemplateSyntaxElement.class.php

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<?php
/**
 * @package     IO
 * @subpackage  Template\parser\syntax
 * @copyright   &copy; 2005-2019 PHPBoost
 * @license     https://www.gnu.org/licenses/gpl-3.0.html GNU/GPL-3.0
 * @author      Loic ROUCHON <horn@phpboost.com>
 * @version     PHPBoost 5.2 - last update: 2016 10 28
 * @since       PHPBoost 3.0 - 2010 07 10
 * @contributor Julien BRISWALTER <j1.seth@phpboost.com>
 * @contributor Arnaud GENET <elenwii@phpboost.com>
*/

class LoopTemplateSyntaxElement extends AbstractTemplateSyntaxElement
{
    private $ended = false;

    public static function is_element(StringInputStream $input)
    {
        return $input->assert_next('#\sSTART\s+(?:\w+\.)*\w+\s#');
    }

    public function parse(TemplateSyntaxParserContext $context, StringInputStream $input, StringOutputStream $output)
    {
        $this->register($context, $input, $output);
        $this->do_parse();
    }

    private function do_parse()
    {
        $this->process_start();
        $this->process_content();
        $this->process_end();
        if (!$this->ended)
        {
            $this->loop_end();
        }
    }

    private function process_start()
    {
        $matches = array();
        $this->input->consume_next('#\sSTART\s+(?P<loop>(?:\w+\.)*\w+)\s#', '', $matches);
        $loop_name = $matches['loop'];
        $this->context->enter_loop($loop_name);

        $exploded = explode('.', $loop_name);
        $name = array_pop($exploded);

        $loop_var = $this->get_tmp_var_name($loop_name);
        $this->output->write('\';foreach(' . TemplateSyntaxElement::DATA . '->');
        if (TextHelper::strpos($loop_name, '.') === false)
        {
            $this->output->write('get_block(\'' . $name . '\')');
        }
        else
        {
            $parent_loop = $this->get_tmp_var_name(implode('.', $exploded));
            $this->output->write('get_block_from_list(\'' . $name . '\', ' . $parent_loop . ')');
        }
        $this->output->write(' as ' . $loop_var . '){' . TemplateSyntaxElement::RESULT . '.=\'');
    }

    private function get_tmp_var_name($loop_name)
    {
        return '$_tmp_' . str_replace('.', '_', $loop_name);
    }

    private function process_end()
    {
        $this->ended = $this->input->consume_next('#\sEND(?P<loop>\s+(?:\w+\.)*\w+)?\s#');
        $this->context->exit_loop();
        $this->output->write('\';}' . TemplateSyntaxElement::RESULT . '.=\'');
    }

    private function process_content()
    {
        $this->parse_elt(new TextTemplateSyntaxElement());
    }

    private function loop_end()
    {
        throw new TemplateRenderingException('Missing loop end', $this->input);
    }
}
?>