Updating Smarty

1 files changed, 115 insertions, 0 deletions

diff --git a/lib/smarty/sysplugins/smarty_internal_runtime_updatescope.php b/lib/smarty/sysplugins/smarty_internal_runtime_updatescope.php
new file mode 100644
index 0000000..2240f97
--- /dev/null
+++ b/lib/smarty/sysplugins/smarty_internal_runtime_updatescope.php
@@ -0,0 +1,115 @@
+<?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++;
+        }
+    }
+}