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