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1: <?php
2:
3: /**
4: * Runtime Extension updateScope
5: *
6: * @package Smarty
7: * @subpackage PluginsInternal
8: * @author Uwe Tews
9: **/
10: class Smarty_Internal_Runtime_UpdateScope
11: {
12: /**
13: * Update new assigned template or config variable in other effected scopes
14: *
15: * @param Smarty_Internal_Template $tpl data object
16: * @param string|null $varName variable name
17: * @param int $tagScope tag scope to which bubble up variable value
18: */
19: public function _updateScope(Smarty_Internal_Template $tpl, $varName, $tagScope = 0)
20: {
21: if ($tagScope) {
22: $this->_updateVarStack($tpl, $varName);
23: $tagScope = $tagScope & ~Smarty::SCOPE_LOCAL;
24: if (!$tpl->scope && !$tagScope) {
25: return;
26: }
27: }
28: $mergedScope = $tagScope | $tpl->scope;
29: if ($mergedScope) {
30: if ($mergedScope & Smarty::SCOPE_GLOBAL && $varName) {
31: Smarty::$global_tpl_vars[ $varName ] = $tpl->tpl_vars[ $varName ];
32: }
33: // update scopes
34: foreach ($this->_getAffectedScopes($tpl, $mergedScope) as $ptr) {
35: $this->_updateVariableInOtherScope($ptr->tpl_vars, $tpl, $varName);
36: if ($tagScope && $ptr->_isTplObj() && isset($tpl->_cache[ 'varStack' ])) {
37: $this->_updateVarStack($ptr, $varName);
38: }
39: }
40: }
41: }
42:
43: /**
44: * Get array of objects which needs to be updated by given scope value
45: *
46: * @param Smarty_Internal_Template $tpl
47: * @param int $mergedScope merged tag and template scope to which bubble up variable value
48: *
49: * @return array
50: */
51: public function _getAffectedScopes(Smarty_Internal_Template $tpl, $mergedScope)
52: {
53: $_stack = array();
54: $ptr = $tpl->parent;
55: if ($mergedScope && isset($ptr) && $ptr->_isTplObj()) {
56: $_stack[] = $ptr;
57: $mergedScope = $mergedScope & ~Smarty::SCOPE_PARENT;
58: if (!$mergedScope) {
59: // only parent was set, we are done
60: return $_stack;
61: }
62: $ptr = $ptr->parent;
63: }
64: while (isset($ptr) && $ptr->_isTplObj()) {
65: $_stack[] = $ptr;
66: $ptr = $ptr->parent;
67: }
68: if ($mergedScope & Smarty::SCOPE_SMARTY) {
69: if (isset($tpl->smarty)) {
70: $_stack[] = $tpl->smarty;
71: }
72: } elseif ($mergedScope & Smarty::SCOPE_ROOT) {
73: while (isset($ptr)) {
74: if (!$ptr->_isTplObj()) {
75: $_stack[] = $ptr;
76: break;
77: }
78: $ptr = $ptr->parent;
79: }
80: }
81: return $_stack;
82: }
83:
84: /**
85: * Update variable in other scope
86: *
87: * @param array $tpl_vars template variable array
88: * @param \Smarty_Internal_Template $from
89: * @param string $varName variable name
90: */
91: public function _updateVariableInOtherScope(&$tpl_vars, Smarty_Internal_Template $from, $varName)
92: {
93: if (!isset($tpl_vars[ $varName ])) {
94: $tpl_vars[ $varName ] = clone $from->tpl_vars[ $varName ];
95: } else {
96: $tpl_vars[ $varName ] = clone $tpl_vars[ $varName ];
97: $tpl_vars[ $varName ]->value = $from->tpl_vars[ $varName ]->value;
98: }
99: }
100:
101: /**
102: * Update variable in template local variable stack
103: *
104: * @param \Smarty_Internal_Template $tpl
105: * @param string|null $varName variable name or null for config variables
106: */
107: public function _updateVarStack(Smarty_Internal_Template $tpl, $varName)
108: {
109: $i = 0;
110: while (isset($tpl->_cache[ 'varStack' ][ $i ])) {
111: $this->_updateVariableInOtherScope($tpl->_cache[ 'varStack' ][ $i ][ 'tpl' ], $tpl, $varName);
112: $i++;
113: }
114: }
115: }
116:
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