<?php

/**

 * Smarty Internal Plugin Data

 * This file contains the basic classes and methods for template and variable creation

 *

 * @package    Smarty

 * @subpackage Template

 * @author     Uwe Tews

 */

/**

 * Base class with template and variable methods

 *

 * @package    Smarty

 * @subpackage Template

 */

class Smarty_Internal_Data {

    /**

     * name of class used for templates

     *

     * @var string

     */

    public $template_class = 'Smarty_Internal_Template';

    /**

     * template variables

     *

     * @var array

     */

    public $tpl_vars = array();

    /**

     * parent template (if any)

     *

     * @var Smarty_Internal_Template

     */

    public $parent = null;

    /**

     * configuration settings

     *

     * @var array

     */

    public $config_vars = array();

    /**

     * assigns a Smarty variable

     *

     * @param  array|string $tpl_var the template variable name(s)

     * @param  mixed $value the value to assign

     * @param  boolean $nocache if true any output of this variable will be not cached

     *

     * @return Smarty_Internal_Data current Smarty_Internal_Data (or Smarty or Smarty_Internal_Template) instance for chaining

     */

    public function assign($tpl_var, $value = null, $nocache = false) {

        if (is_array($tpl_var)) {

            foreach ($tpl_var as $_key => $_val) {

                if ($_key != '') {

                    $this->tpl_vars[$_key] = new Smarty_Variable($_val, $nocache);

                }

            }

        } else {

            if ($tpl_var != '') {

                $this->tpl_vars[$tpl_var] = new Smarty_Variable($value, $nocache);

            }

        }

        return $this;

    }

    /**

     * assigns a global Smarty variable

     *

     * @param  string $varname the global variable name

     * @param  mixed $value the value to assign

     * @param  boolean $nocache if true any output of this variable will be not cached

     *

     * @return Smarty_Internal_Data current Smarty_Internal_Data (or Smarty or Smarty_Internal_Template) instance for chaining

     */

    public function assignGlobal($varname, $value = null, $nocache = false) {

        if ($varname != '') {

            Smarty::$global_tpl_vars[$varname] = new Smarty_Variable($value, $nocache);

            $ptr = $this;

            while ($ptr instanceof Smarty_Internal_Template) {

                $ptr->tpl_vars[$varname] = clone Smarty::$global_tpl_vars[$varname];

                $ptr = $ptr->parent;

            }

        }

        return $this;

    }

    /**

     * assigns values to template variables by reference

     *

     * @param string $tpl_var the template variable name

     * @param          $value

     * @param  boolean $nocache if true any output of this variable will be not cached

     *

     * @return Smarty_Internal_Data current Smarty_Internal_Data (or Smarty or Smarty_Internal_Template) instance for chaining

     */

    public function assignByRef($tpl_var, &$value, $nocache = false) {

        if ($tpl_var != '') {

            $this->tpl_vars[$tpl_var] = new Smarty_Variable(null, $nocache);

            $this->tpl_vars[$tpl_var]->value = &$value;

        }

        return $this;

    }

    /**

     * appends values to template variables

     *

     * @param  array|string $tpl_var the template variable name(s)

     * @param  mixed $value the value to append

     * @param  boolean $merge flag if array elements shall be merged

     * @param  boolean $nocache if true any output of this variable will be not cached

     *

     * @return Smarty_Internal_Data current Smarty_Internal_Data (or Smarty or Smarty_Internal_Template) instance for chaining

     */

    public function append($tpl_var, $value = null, $merge = false, $nocache = false) {

        if (is_array($tpl_var)) {

            // $tpl_var is an array, ignore $value

            foreach ($tpl_var as $_key => $_val) {

                if ($_key != '') {

                    if (!isset($this->tpl_vars[$_key])) {

                        $tpl_var_inst = $this->getVariable($_key, null, true, false);

                        if ($tpl_var_inst instanceof Smarty_Undefined_Variable) {

                            $this->tpl_vars[$_key] = new Smarty_Variable(null, $nocache);

                        } else {

                            $this->tpl_vars[$_key] = clone $tpl_var_inst;

                        }

                    }

                    if (!(is_array($this->tpl_vars[$_key]->value) || $this->tpl_vars[$_key]->value instanceof ArrayAccess)) {

                        settype($this->tpl_vars[$_key]->value, 'array');

                    }

                    if ($merge && is_array($_val)) {

                        foreach ($_val as $_mkey => $_mval) {

                            $this->tpl_vars[$_key]->value[$_mkey] = $_mval;

                        }

                    } else {

                        $this->tpl_vars[$_key]->value[] = $_val;

                    }

                }

            }

        } else {

            if ($tpl_var != '' && isset($value)) {

                if (!isset($this->tpl_vars[$tpl_var])) {

                    $tpl_var_inst = $this->getVariable($tpl_var, null, true, false);

                    if ($tpl_var_inst instanceof Smarty_Undefined_Variable) {

                        $this->tpl_vars[$tpl_var] = new Smarty_Variable(null, $nocache);

                    } else {

                        $this->tpl_vars[$tpl_var] = clone $tpl_var_inst;

                    }

                }

                if (!(is_array($this->tpl_vars[$tpl_var]->value) || $this->tpl_vars[$tpl_var]->value instanceof ArrayAccess)) {

                    settype($this->tpl_vars[$tpl_var]->value, 'array');

                }

                if ($merge && is_array($value)) {

                    foreach ($value as $_mkey => $_mval) {

                        $this->tpl_vars[$tpl_var]->value[$_mkey] = $_mval;

                    }

                } else {

                    $this->tpl_vars[$tpl_var]->value[] = $value;

                }

            }

        }

        return $this;

    }

    /**

     * appends values to template variables by reference

     *

     * @param  string $tpl_var the template variable name

     * @param  mixed &$value the referenced value to append

     * @param  boolean $merge flag if array elements shall be merged

     *

     * @return Smarty_Internal_Data current Smarty_Internal_Data (or Smarty or Smarty_Internal_Template) instance for chaining

     */

    public function appendByRef($tpl_var, &$value, $merge = false) {

        if ($tpl_var != '' && isset($value)) {

            if (!isset($this->tpl_vars[$tpl_var])) {

                $this->tpl_vars[$tpl_var] = new Smarty_Variable();

            }

            if (!is_array($this->tpl_vars[$tpl_var]->value)) {

                settype($this->tpl_vars[$tpl_var]->value, 'array');

            }

            if ($merge && is_array($value)) {

                foreach ($value as $_key => $_val) {

                    $this->tpl_vars[$tpl_var]->value[$_key] = &$value[$_key];

                }

            } else {

                $this->tpl_vars[$tpl_var]->value[] = &$value;

            }

        }

        return $this;

    }

    /**

     * Returns a single or all template variables

     *

     * @param  string $varname variable name or null

     * @param  object $_ptr optional pointer to data object

     * @param  boolean $search_parents include parent templates?

     *

     * @return string  variable value or or array of variables

     */

    public function getTemplateVars($varname = null, $_ptr = null, $search_parents = true) {

        if (isset($varname)) {

            $_var = $this->getVariable($varname, $_ptr, $search_parents, false);

            if (is_object($_var)) {

                return $_var->value;

            } else {

                return null;

            }

        } else {

            $_result = array();

            if ($_ptr === null) {

                $_ptr = $this;

            }

            while ($_ptr !== null) {

                foreach ($_ptr->tpl_vars AS $key => $var) {

                    if (!array_key_exists($key, $_result)) {

                        $_result[$key] = $var->value;

                    }

                }

                // not found, try at parent

                if ($search_parents) {

                    $_ptr = $_ptr->parent;

                } else {

                    $_ptr = null;

                }

            }

            if ($search_parents && isset(Smarty::$global_tpl_vars)) {

                foreach (Smarty::$global_tpl_vars AS $key => $var) {

                    if (!array_key_exists($key, $_result)) {

                        $_result[$key] = $var->value;

                    }

                }

            }

            return $_result;

        }

    }

    /**

     * clear the given assigned template variable.

     *

     * @param  string|array $tpl_var the template variable(s) to clear

     *

     * @return Smarty_Internal_Data current Smarty_Internal_Data (or Smarty or Smarty_Internal_Template) instance for chaining

     */

    public function clearAssign($tpl_var) {

        if (is_array($tpl_var)) {

            foreach ($tpl_var as $curr_var) {

                unset($this->tpl_vars[$curr_var]);

            }

        } else {

            unset($this->tpl_vars[$tpl_var]);

        }

        return $this;

    }

    /**

     * clear all the assigned template variables.

     *

     * @return Smarty_Internal_Data current Smarty_Internal_Data (or Smarty or Smarty_Internal_Template) instance for chaining

     */

    public function clearAllAssign() {

        $this->tpl_vars = array();

        return $this;

    }

    /**

     * load a config file, optionally load just selected sections

     *

     * @param  string $config_file filename

     * @param  mixed $sections array of section names, single section or null

     *

     * @return Smarty_Internal_Data current Smarty_Internal_Data (or Smarty or Smarty_Internal_Template) instance for chaining

     */

    public function configLoad($config_file, $sections = null) {

        // load Config class

        Smarty_Internal_Extension_Config::configLoad($this, $config_file, $sections);

        return $this;

    }

    /**

     * gets the object of a Smarty variable

     *

     * @param  string $variable the name of the Smarty variable

     * @param  object $_ptr optional pointer to data object

     * @param  boolean $search_parents search also in parent data

     * @param bool $error_enable

     *

     * @return object  the object of the variable

     */

    public function getVariable($variable, $_ptr = null, $search_parents = true, $error_enable = true) {

        if ($_ptr === null) {

            $_ptr = $this;

        }

        while ($_ptr !== null) {

            if (isset($_ptr->tpl_vars[$variable])) {

                // found it, return it

                return $_ptr->tpl_vars[$variable];

            }

            // not found, try at parent

            if ($search_parents) {

                $_ptr = $_ptr->parent;

            } else {

                $_ptr = null;

            }

        }

        if (isset(Smarty::$global_tpl_vars[$variable])) {

            // found it, return it

            return Smarty::$global_tpl_vars[$variable];

        }

        $smarty = isset($this->smarty) ? $this->smarty : $this;

        if ($smarty->error_unassigned && $error_enable) {

            // force a notice

            $x = $$variable;

        }

        return new Smarty_Undefined_Variable;

    }

    /**

     * gets  a config variable

     *

     * @param  string $variable the name of the config variable

     * @param bool $error_enable

     *

     * @return mixed  the value of the config variable

     */

    public function getConfigVariable($variable, $error_enable = true) {

        return Smarty_Internal_Extension_Config::getConfigVariable($this, $variable, $error_enable = true);

    }

    /**

     * Returns a single or all config variables

     *

     * @param  string $varname variable name or null

     * @param bool $search_parents

     *

     * @return string variable value or or array of variables

     */

    public function getConfigVars($varname = null, $search_parents = true) {

        return Smarty_Internal_Extension_Config::getConfigVars($this, $varname, $search_parents);

    }

    /**

     * Deassigns a single or all config variables

     *

     * @param  string $varname variable name or null

     *

     * @return Smarty_Internal_Data current Smarty_Internal_Data (or Smarty or Smarty_Internal_Template) instance for chaining

     */

    public function clearConfig($varname = null) {

        return Smarty_Internal_Extension_Config::clearConfig($this, $varname);

    }

    /**

     * gets  a stream variable

     *

     * @param  string $variable the stream of the variable

     *

     * @throws SmartyException

     * @return mixed  the value of the stream variable

     */

    public function getStreamVariable($variable) {

        $_result = '';

        $fp = fopen($variable, 'r+');

        if ($fp) {

            while (!feof($fp) && ($current_line = fgets($fp)) !== false) {

                $_result .= $current_line;

            }

            fclose($fp);

            return $_result;

        }

        $smarty = isset($this->smarty) ? $this->smarty : $this;

        if ($smarty->error_unassigned) {

            throw new SmartyException('Undefined stream variable "' . $variable . '"');

        } else {

            return null;

        }

    }

}