1: <?php
 2: 
 3: /**
 4:  * Smarty Internal Plugin Compile extend
 5:  * Compiles the {extends} tag
 6:  *
 7:  * @package    Smarty
 8:  * @subpackage Compiler
 9:  * @author     Uwe Tews
10:  */
11: 
12: /**
13:  * Smarty Internal Plugin Compile extend Class
14:  *
15:  * @package    Smarty
16:  * @subpackage Compiler
17:  */
18: class Smarty_Internal_Compile_Extends extends Smarty_Internal_CompileBase
19: {
20:     /**
21:      * Attribute definition: Overwrites base class.
22:      *
23:      * @var array
24:      * @see Smarty_Internal_CompileBase
25:      */
26:     public $required_attributes = array('file');
27:     /**
28:      * Attribute definition: Overwrites base class.
29:      *
30:      * @var array
31:      * @see Smarty_Internal_CompileBase
32:      */
33:     public $shorttag_order = array('file');
34: 
35:     /**
36:      * Compiles code for the {extends} tag
37:      *
38:      * @param array  $args     array with attributes from parser
39:      * @param object $compiler compiler object
40:      *
41:      * @return string compiled code
42:      */
43:     public function compile($args, $compiler)
44:     {
45:         // check and get attributes
46:         $_attr = $this->getAttributes($compiler, $args);
47:         if ($_attr['nocache'] === true) {
48:             $compiler->trigger_template_error('nocache option not allowed', $compiler->lex->taglineno);
49:         }
50:         if (strpos($_attr['file'], '$_tmp') !== false) {
51:             $compiler->trigger_template_error('illegal value for file attribute', $compiler->lex->taglineno);
52:         }
53: 
54:         $name = $_attr['file'];
55:         /** @var Smarty_Internal_Template $_smarty_tpl
56:          * used in evaluated code
57:          */
58:         $_smarty_tpl = $compiler->template;
59:         eval("\$tpl_name = $name;");
60:         // create template object
61:         $_template = new $compiler->smarty->template_class($tpl_name, $compiler->smarty, $compiler->template);
62:         // check for recursion
63:         $uid = $_template->source->uid;
64:         if (isset($compiler->extends_uid[$uid])) {
65:             $compiler->trigger_template_error("illegal recursive call of \"$include_file\"", $compiler->lex->line - 1);
66:         }
67:         $compiler->extends_uid[$uid] = true;
68:         if (empty($_template->source->components)) {
69:             array_unshift($compiler->sources, $_template->source);
70:         } else {
71:             foreach ($_template->source->components as $source) {
72:                 array_unshift($compiler->sources, $source);
73:                 $uid = $source->uid;
74:                 if (isset($compiler->extends_uid[$uid])) {
75:                     $compiler->trigger_template_error("illegal recursive call of \"{$source->filepath}\"", $compiler->lex->line - 1);
76:                 }
77:                 $compiler->extends_uid[$uid] = true;
78:             }
79:         }
80:         unset ($_template);
81:         $compiler->inheritance_child = true;
82:         $compiler->lex->yypushstate(Smarty_Internal_Templatelexer::CHILDBODY);
83:         return '';
84:     }
85: }
86: