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<?php
/**
* Runtime Extension updateScope
*
* @package Smarty
* @subpackage PluginsInternal
* @author Uwe Tews
**/
class Smarty_Internal_Runtime_UpdateScope
{
/**
* Update new assigned template or config variable in other effected scopes
*
* @param Smarty_Internal_Template $tpl data object
* @param string|null $varName variable name
* @param int $tagScope tag scope to which bubble up variable value
*/
public function _updateScope(Smarty_Internal_Template $tpl, $varName, $tagScope = 0)
{
if ($tagScope) {
$this->_updateVarStack($tpl, $varName);
$tagScope = $tagScope & ~Smarty::SCOPE_LOCAL;
if (!$tpl->scope && !$tagScope) {
return;
}
}
$mergedScope = $tagScope | $tpl->scope;
if ($mergedScope) {
if ($mergedScope & Smarty::SCOPE_GLOBAL && $varName) {
Smarty::$global_tpl_vars[ $varName ] = $tpl->tpl_vars[ $varName ];
}
// update scopes
foreach ($this->_getAffectedScopes($tpl, $mergedScope) as $ptr) {
$this->_updateVariableInOtherScope($ptr->tpl_vars, $tpl, $varName);
if ($tagScope && $ptr->_isTplObj() && isset($tpl->_cache[ 'varStack' ])) {
$this->_updateVarStack($ptr, $varName);
}
}
}
}
/**
* Get array of objects which needs to be updated by given scope value
*
* @param Smarty_Internal_Template $tpl
* @param int $mergedScope merged tag and template scope to which bubble up variable value
*
* @return array
*/
public function _getAffectedScopes(Smarty_Internal_Template $tpl, $mergedScope)
{
$_stack = array();
$ptr = $tpl->parent;
if ($mergedScope && isset($ptr) && $ptr->_isTplObj()) {
$_stack[] = $ptr;
$mergedScope = $mergedScope & ~Smarty::SCOPE_PARENT;
if (!$mergedScope) {
// only parent was set, we are done
return $_stack;
}
$ptr = $ptr->parent;
}
while (isset($ptr) && $ptr->_isTplObj()) {
$_stack[] = $ptr;
$ptr = $ptr->parent;
}
if ($mergedScope & Smarty::SCOPE_SMARTY) {
if (isset($tpl->smarty)) {
$_stack[] = $tpl->smarty;
}
} elseif ($mergedScope & Smarty::SCOPE_ROOT) {
while (isset($ptr)) {
if (!$ptr->_isTplObj()) {
$_stack[] = $ptr;
break;
}
$ptr = $ptr->parent;
}
}
return $_stack;
}
/**
* Update variable in other scope
*
* @param array $tpl_vars template variable array
* @param \Smarty_Internal_Template $from
* @param string $varName variable name
*/
public function _updateVariableInOtherScope(&$tpl_vars, Smarty_Internal_Template $from, $varName)
{
if (!isset($tpl_vars[ $varName ])) {
$tpl_vars[ $varName ] = clone $from->tpl_vars[ $varName ];
} else {
$tpl_vars[ $varName ] = clone $tpl_vars[ $varName ];
$tpl_vars[ $varName ]->value = $from->tpl_vars[ $varName ]->value;
}
}
/**
* Update variable in template local variable stack
*
* @param \Smarty_Internal_Template $tpl
* @param string|null $varName variable name or null for config variables
*/
public function _updateVarStack(Smarty_Internal_Template $tpl, $varName)
{
$i = 0;
while (isset($tpl->_cache[ 'varStack' ][ $i ])) {
$this->_updateVariableInOtherScope($tpl->_cache[ 'varStack' ][ $i ][ 'tpl' ], $tpl, $varName);
$i++;
}
}
}
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