<?php

/**

 * Smarty Internal Plugin Templateparser Parse Tree

 * These are classes to build parse tree in the template parser

 *

 * @package    Smarty

 * @subpackage Compiler

 * @author     Thue Kristensen

 * @author     Uwe Tews

 */

/**

 * Template element

 *

 * @package    Smarty

 * @subpackage Compiler

 * @ignore

 */

class Smarty_Internal_ParseTree_Template extends Smarty_Internal_ParseTree {

    /**

     * Array of template elements

     *

     * @var array

     */

    public $subtrees = Array();

    /**

     * Create root of parse tree for template elements

     *

     * @param object $parser parse object

     */

    public function __construct($parser) {

        $this->parser = $parser;

    }

    /**

     * Append buffer to subtree

     *

     * @param Smarty_Internal_ParseTree $subtree

     */

    public function append_subtree(Smarty_Internal_ParseTree $subtree) {

        if (!empty($subtree->subtrees)) {

            $this->subtrees = array_merge($this->subtrees, $subtree->subtrees);

        } else {

            if ($subtree->data !== '') {

                $this->subtrees[] = $subtree;

            }

        }

    }

    /**

     * Sanitize and merge subtree buffers together

     *

     * @return string template code content

     */

    public function to_smarty_php() {

        $code = '';

        for ($key = 0, $cnt = count($this->subtrees); $key < $cnt; $key++) {

            if ($this->subtrees[$key] instanceof Smarty_Internal_ParseTree_Text) {

                $subtree = $this->subtrees[$key]->to_smarty_php();

                while ($key + 1 < $cnt && ($this->subtrees[$key + 1] instanceof Smarty_Internal_ParseTree_Text || $this->subtrees[$key + 1]->data == '')) {

                    $key++;

                    if ($this->subtrees[$key]->data == '') {

                        continue;

                    }

                    $subtree .= $this->subtrees[$key]->to_smarty_php();

                }

                if ($subtree == '') {

                    continue;

                }

                $code .= preg_replace('/((<%)|(%>)|(<\?php)|(<\?)|(\?>)|(<\/?script))/', "<?php echo '\$1'; ?>\n", $subtree);

                continue;

            }

            if ($this->subtrees[$key] instanceof Smarty_Internal_ParseTree_Tag) {

                $subtree = $this->subtrees[$key]->to_smarty_php();

                while ($key + 1 < $cnt && ($this->subtrees[$key + 1] instanceof Smarty_Internal_ParseTree_Tag || $this->subtrees[$key + 1]->data == '')) {

                    $key++;

                    if ($this->subtrees[$key]->data == '') {

                        continue;

                    }

                    $subtree = $this->parser->compiler->appendCode($subtree, $this->subtrees[$key]->to_smarty_php());

                }

                if ($subtree == '') {

                    continue;

                }

                $code .= $subtree;

                continue;

            }

            $code .= $this->subtrees[$key]->to_smarty_php();

        }

        return $code;

    }

}