<?php

/**

 * Smarty Internal Plugin Templateparser Parsetrees

 *

 * These are classes to build parsetrees in the template parser

 *

 * @package Smarty

 * @subpackage Compiler

 * @author Thue Kristensen

 * @author Uwe Tews

 */

/**

 * @package Smarty

 * @subpackage Compiler

 * @ignore

 */

abstract class _smarty_parsetree {

    /**

     * Parser object

     * @var object

     */

    public $parser;

    /**

     * Buffer content

     * @var mixed

     */

    public $data;

    /**

     * Return buffer

     *

     * @return string  buffer content

     */

    abstract public function to_smarty_php();

}

/**

 * A complete smarty tag.

 *

 * @package Smarty

 * @subpackage Compiler

 * @ignore

 */

class _smarty_tag extends _smarty_parsetree {

    /**

     * Saved block nesting level

     * @var int

     */

    public $saved_block_nesting;

    /**

     * Create parse tree buffer for Smarty tag

     *

     * @param object $parser    parser object

     * @param string $data      content

     */

    public function __construct($parser, $data)

    {

        $this->parser = $parser;

        $this->data = $data;

        $this->saved_block_nesting = $parser->block_nesting_level;

    }

    /**

     * Return buffer content

     *

     * @return string  content

     */

    public function to_smarty_php()

    {

        return $this->data;

    }

    /**

     * Return complied code that loads the evaluated outout of buffer content into a temporary variable

     *

     * @return string template code

     */

    public function assign_to_var()

    {

        $var = sprintf('$_tmp%d', ++$this->parser->prefix_number);

        $this->parser->compiler->prefix_code[] = sprintf('<?php ob_start();?>%s<?php %s=ob_get_clean();?>', $this->data, $var);

        return $var;

    }

}

/**

 * Code fragment inside a tag.

 *

 * @package Smarty

 * @subpackage Compiler

 * @ignore

 */

class _smarty_code extends _smarty_parsetree {

    /**

     * Create parse tree buffer for code fragment

     *

     * @param object $parser    parser object

     * @param string $data      content

     */

    public function __construct($parser, $data)

    {

        $this->parser = $parser;

        $this->data = $data;

    }

    /**

     * Return buffer content in parentheses

     *

     * @return string  content

     */

    public function to_smarty_php()

    {

        return sprintf("(%s)", $this->data);

    }

}

/**

 * Double quoted string inside a tag.

 *

 * @package Smarty

 * @subpackage Compiler

 * @ignore

 */

class _smarty_doublequoted extends _smarty_parsetree {

    /**

     * Create parse tree buffer for double quoted string subtrees

     *

     * @param object $parser    parser object

     * @param _smarty_parsetree $subtree    parsetree buffer

     */

    public function __construct($parser, _smarty_parsetree $subtree)

    {

        $this->parser = $parser;

        $this->subtrees[] = $subtree;

        if ($subtree instanceof _smarty_tag) {

            $this->parser->block_nesting_level = count($this->parser->compiler->_tag_stack);

        }

    }

    /**

     * Append buffer to subtree

     *

     * @param _smarty_parsetree $subtree  parsetree buffer

     */

    public function append_subtree(_smarty_parsetree $subtree)

    {

        $last_subtree = count($this->subtrees) - 1;

        if ($last_subtree >= 0 && $this->subtrees[$last_subtree] instanceof _smarty_tag && $this->subtrees[$last_subtree]->saved_block_nesting < $this->parser->block_nesting_level) {

            if ($subtree instanceof _smarty_code) {

                $this->subtrees[$last_subtree]->data .= '<?php echo ' . $subtree->data . ';?>';

            } elseif ($subtree instanceof _smarty_dq_content) {

                $this->subtrees[$last_subtree]->data .= '<?php echo "' . $subtree->data . '";?>';

            } else {

                $this->subtrees[$last_subtree]->data .= $subtree->data;

            }

        } else {

            $this->subtrees[] = $subtree;

        }

        if ($subtree instanceof _smarty_tag) {

            $this->parser->block_nesting_level = count($this->parser->compiler->_tag_stack);

        }

    }

    /**

     * Merge subtree buffer content together

     *

     * @return string  compiled template code

     */

    public function to_smarty_php()

    {

        $code = '';

        foreach ($this->subtrees as $subtree) {

            if ($code !== "") {

                $code .= ".";

            }

            if ($subtree instanceof _smarty_tag) {

                $more_php = $subtree->assign_to_var();

            } else {

                $more_php = $subtree->to_smarty_php();

            }

            $code .= $more_php;

            if (!$subtree instanceof _smarty_dq_content) {

                $this->parser->compiler->has_variable_string = true;

            }

        }

        return $code;

    }

}

/**

 * Raw chars as part of a double quoted string.

 *

 * @package Smarty

 * @subpackage Compiler

 * @ignore

 */

class _smarty_dq_content extends _smarty_parsetree {

    /**

     * Create parse tree buffer with string content

     *

     * @param object $parser  parser object

     * @param string $data    string section

     */

    public function __construct($parser, $data)

    {

        $this->parser = $parser;

        $this->data = $data;

    }

    /**

     * Return content as double quoted string

     *

     * @return string doubled quoted string

     */

    public function to_smarty_php()

    {

        return '"' . $this->data . '"';

    }

}

/**

 * Template element

 *

 * @package Smarty

 * @subpackage Compiler

 * @ignore

 */

class _smarty_template_buffer extends _smarty_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_parsetree $subtree

     */

    public function append_subtree(_smarty_parsetree $subtree)

    {

        $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 ($key + 2 < $cnt) {

                if ($this->subtrees[$key] instanceof _smarty_linebreak && $this->subtrees[$key + 1] instanceof _smarty_tag && $this->subtrees[$key + 1]->data == '' && $this->subtrees[$key + 2] instanceof _smarty_linebreak) {

                    $key = $key + 1;

                    continue;

                }

                if (substr($this->subtrees[$key]->data, -1) == '<' && $this->subtrees[$key + 1]->data == '' && substr($this->subtrees[$key + 2]->data, -1) == '?') {

                    $key = $key + 2;

                    continue;

                }

            }

            if (substr($code, -1) == '<') {

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

                if (substr($subtree, 0, 1) == '?') {

                    $code = substr($code, 0, strlen($code) - 1) . '<<?php ?>?' . substr($subtree, 1);

                } elseif ($this->parser->asp_tags && substr($subtree, 0, 1) == '%') {

                    $code = substr($code, 0, strlen($code) - 1) . '<<?php ?>%' . substr($subtree, 1);

                } else {

                    $code .= $subtree;

                }

                continue;

            }

            if ($this->parser->asp_tags && substr($code, -1) == '%') {

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

                if (substr($subtree, 0, 1) == '>') {

                    $code = substr($code, 0, strlen($code) - 1) . '%<?php ?>>' . substr($subtree, 1);

                } else {

                    $code .= $subtree;

                }

                continue;

            }

            if (substr($code, -1) == '?') {

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

                if (substr($subtree, 0, 1) == '>') {

                    $code = substr($code, 0, strlen($code) - 1) . '?<?php ?>>' . substr($subtree, 1);

                } else {

                    $code .= $subtree;

                }

                continue;

            }

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

        }

        return $code;

    }

}

/**

 * template text

 *

 * @package Smarty

 * @subpackage Compiler

 * @ignore

 */

class _smarty_text extends _smarty_parsetree {

    /**

     * Create template text buffer

     *

     * @param object $parser    parser object

     * @param string $data      text

     */

    public function __construct($parser, $data)

    {

        $this->parser = $parser;

        $this->data = $data;

    }

    /**

     * Return buffer content

     *

     * @return strint text

     */

    public function to_smarty_php()

    {

        return $this->data;

    }

}

/**

 * template linebreaks

 *

 * @package Smarty

 * @subpackage Compiler

 * @ignore

 */

class _smarty_linebreak extends _smarty_parsetree {

    /**

     * Create buffer with linebreak content

     *

     * @param object $parser    parser object

     * @param string  $data     linebreak string

     */

    public function __construct($parser, $data)

    {

        $this->parser = $parser;

        $this->data = $data;

    }

    /**

     * Return linebrak

     *

     * @return string linebreak

     */

    public function to_smarty_php()

    {

        return $this->data;

    }

}

?>