library/smarty/lexer/smarty_internal_configfileparser.y
author Markus Bröker <broeker.markus@googlemail.com>
Fri, 13 Nov 2015 22:13:11 +0100
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Datenbank ist jetzt frei konfigurierbar
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/**
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* Smarty Internal Plugin Configfileparser
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*
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* This is the config file parser
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* 
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* 
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* @package Smarty
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* @subpackage Config
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* @author Uwe Tews
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*/
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%name TPC_
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%declare_class {
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/**
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* Smarty Internal Plugin Configfileparse
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*
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* This is the config file parser.
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* It is generated from the smarty_internal_configfileparser.y file
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* @package Smarty
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* @subpackage Compiler
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* @author Uwe Tews
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*/
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class Smarty_Internal_Configfileparser
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}
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%include_class
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{
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    /**
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     * result status
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     *
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     * @var bool
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     */
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    public $successful = true;
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    /**
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     * return value
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     *
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     * @var mixed
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     */
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    public $retvalue = 0;
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    /**
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     * @var
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     */
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    public $yymajor;
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    /**
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     * lexer object
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     *
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     * @var Smarty_Internal_Configfilelexer
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     */
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    private $lex;
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    /**
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     * internal error flag
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     *
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     * @var bool
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     */
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    private $internalError = false;
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    /**
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     * compiler object
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     *
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     * @var Smarty_Internal_Config_File_Compiler
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     */
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    public $compiler = null;
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    /**
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     * smarty object
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     *
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     * @var Smarty
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     */
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    public $smarty = null;
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    /**
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     * copy of config_overwrite property
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     *
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     * @var bool
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     */
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    private $configOverwrite = false;
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    /**
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     * copy of config_read_hidden property
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     *
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     * @var bool
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     */
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    private $configReadHidden = false;
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    /**
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     * helper map
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     *
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     * @var array
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     */
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    private static $escapes_single = Array('\\' => '\\',
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                                           '\'' => '\'');
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    /**
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     * constructor
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     *
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     * @param Smarty_Internal_Configfilelexer      $lex
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     * @param Smarty_Internal_Config_File_Compiler $compiler
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     */
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    function __construct(Smarty_Internal_Configfilelexer $lex, Smarty_Internal_Config_File_Compiler $compiler)
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    {
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        // set instance object
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        self::instance($this);
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        $this->lex = $lex;
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        $this->smarty = $compiler->smarty;
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        $this->compiler = $compiler;
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        $this->configOverwrite = $this->smarty->config_overwrite;
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        $this->configReadHidden = $this->smarty->config_read_hidden;
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    }
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    /**
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     * @param null $new_instance
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     *
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     * @return null
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     */
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    public static function &instance($new_instance = null)
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    {
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        static $instance = null;
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        if (isset($new_instance) && is_object($new_instance)) {
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            $instance = $new_instance;
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        }
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        return $instance;
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    }
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    /**
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     * parse optional boolean keywords
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     *
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     * @param string $str
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     *
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     * @return bool
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     */
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    private function parse_bool($str)
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    {
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        $str = strtolower($str);
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        if (in_array($str, array('on', 'yes', 'true'))) {
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            $res = true;
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        } else {
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            $res = false;
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        }
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        return $res;
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    }
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    /**
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     * parse single quoted string
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     *  remove outer quotes
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     *  unescape inner quotes
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     *
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     * @param string $qstr
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     *
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     * @return string
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     */
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    private static function parse_single_quoted_string($qstr)
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    {
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        $escaped_string = substr($qstr, 1, strlen($qstr) - 2); //remove outer quotes
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        $ss = preg_split('/(\\\\.)/', $escaped_string, - 1, PREG_SPLIT_DELIM_CAPTURE);
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        $str = "";
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        foreach ($ss as $s) {
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            if (strlen($s) === 2 && $s[0] === '\\') {
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                if (isset(self::$escapes_single[$s[1]])) {
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                    $s = self::$escapes_single[$s[1]];
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                }
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            }
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            $str .= $s;
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        }
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        return $str;
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    }
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    /**
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     * parse double quoted string
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     *
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     * @param string $qstr
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     *
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     * @return string
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     */
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    private static function parse_double_quoted_string($qstr)
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    {
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        $inner_str = substr($qstr, 1, strlen($qstr) - 2);
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        return stripcslashes($inner_str);
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    }
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    /**
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     * parse triple quoted string
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     *
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     * @param string $qstr
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     *
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     * @return string
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     */
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    private static function parse_tripple_double_quoted_string($qstr)
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    {
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        return stripcslashes($qstr);
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    }
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    /**
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     * set a config variable in target array
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     *
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     * @param array $var
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     * @param array $target_array
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     */
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    private function set_var(Array $var, Array &$target_array)
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    {
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        $key = $var["key"];
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        $value = $var["value"];
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        if ($this->configOverwrite || !isset($target_array['vars'][$key])) {
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            $target_array['vars'][$key] = $value;
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        } else {
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            settype($target_array['vars'][$key], 'array');
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            $target_array['vars'][$key][] = $value;
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        }
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    }
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    /**
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     * add config variable to global vars
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     *
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     * @param array $vars
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     */
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    private function add_global_vars(Array $vars)
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    {
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        if (!isset($this->compiler->config_data['vars'])) {
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            $this->compiler->config_data['vars'] = Array();
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        }
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        foreach ($vars as $var) {
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            $this->set_var($var, $this->compiler->config_data);
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        }
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    }
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    /**
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     * add config variable to section
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   223
     *
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     * @param string $section_name
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     * @param array  $vars
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     */
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    private function add_section_vars($section_name, Array $vars)
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    {
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   229
        if (!isset($this->compiler->config_data['sections'][$section_name]['vars'])) {
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            $this->compiler->config_data['sections'][$section_name]['vars'] = Array();
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   231
        }
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        foreach ($vars as $var) {
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            $this->set_var($var, $this->compiler->config_data['sections'][$section_name]);
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   234
        }
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    }
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}
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%token_prefix TPC_
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%parse_accept
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{
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   242
    $this->successful = !$this->internalError;
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   243
    $this->internalError = false;
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   244
    $this->retvalue = $this->_retvalue;
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}
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   247
%syntax_error
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{
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    $this->internalError = true;
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   250
    $this->yymajor = $yymajor;
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   251
    $this->compiler->trigger_config_file_error();
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}
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%stack_overflow
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{
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    $this->internalError = true;
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   257
    $this->compiler->trigger_config_file_error("Stack overflow in configfile parser");
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}
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// Complete config file
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start(res) ::= global_vars sections. {
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    res = null;
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}
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// Global vars
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global_vars(res) ::= var_list(vl). {
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    $this->add_global_vars(vl);
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    res = null;
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}
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// Sections
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sections(res) ::= sections section. {
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    res = null;
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}
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sections(res) ::= . {
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    res = null;
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}
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section(res) ::= OPENB SECTION(i) CLOSEB newline var_list(vars). {
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    $this->add_section_vars(i, vars);
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    res = null;
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}
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section(res) ::= OPENB DOT SECTION(i) CLOSEB newline var_list(vars). {
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    if ($this->configReadHidden) {
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        $this->add_section_vars(i, vars);
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    }
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    res = null;
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}
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// Var list
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var_list(res) ::= var_list(vl) newline. {
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    res = vl;
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}
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var_list(res) ::= var_list(vl) var(v). {
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    res = array_merge(vl, Array(v));
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}
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var_list(res) ::= . {
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    res = Array();
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}
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// Var
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var(res) ::= ID(id) EQUAL value(v). {
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    res = Array("key" => id, "value" => v);
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}
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value(res) ::= FLOAT(i). {
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    res = (float) i;
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}
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value(res) ::= INT(i). {
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    res = (int) i;
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}
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value(res) ::= BOOL(i). {
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   321
    res = $this->parse_bool(i);
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   322
}
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   323
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   324
value(res) ::= SINGLE_QUOTED_STRING(i). {
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   325
    res = self::parse_single_quoted_string(i);
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   326
}
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   327
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   328
value(res) ::= DOUBLE_QUOTED_STRING(i). {
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   329
    res = self::parse_double_quoted_string(i);
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   330
}
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   331
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   332
value(res) ::= TRIPPLE_QUOTES(i) TRIPPLE_TEXT(c) TRIPPLE_QUOTES_END(ii). {
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parents:
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   333
    res = self::parse_tripple_double_quoted_string(c);
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   334
}
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   335
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   336
value(res) ::= TRIPPLE_QUOTES(i) TRIPPLE_QUOTES_END(ii). {
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   337
    res = '';
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   338
}
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   339
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   340
value(res) ::= NAKED_STRING(i). {
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parents:
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   341
    res = i;
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   342
}
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   343
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   344
// NOTE: this is not a valid rule
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   345
// It is added hier to produce a usefull error message on a missing '=';
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parents:
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   346
value(res) ::= OTHER(i). {
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   347
    res = i;
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   348
}
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   349
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   350
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parents:
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   351
// Newline and comments
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parents:
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   352
newline(res) ::= NEWLINE. {
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   353
    res = null;
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parents:
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   354
}
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parents:
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   355
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parents:
diff changeset
   356
newline(res) ::= COMMENTSTART NEWLINE. {
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parents:
diff changeset
   357
    res = null;
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parents:
diff changeset
   358
}
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parents:
diff changeset
   359
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parents:
diff changeset
   360
newline(res) ::= COMMENTSTART NAKED_STRING NEWLINE. {
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parents:
diff changeset
   361
    res = null;
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parents:
diff changeset
   362
}