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Yet another problem, this time with an infinite loop.

 
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qUJy5Xg0ve7k
Smarty Rookie


Joined: 15 Aug 2018
Posts: 15
PostPosted: Fri Aug 17, 2018 10:03 pm    Post subject: Yet another problem, this time with an infinite loop. Reply with quote
So I guess I can't update to 3.1.32 (https://www.smarty.net/forums/viewtopic.php?p=93618) and now it looks like I can't update to 3.1.27 either. Somehow the function $smarty->display appears to have changed such that it previously was possible to return a string.

Anyway, I changed it to $smarty->fetch, but somehow it's causing an infinite loop and I simply cannot track it down.

Here's what I'm doing:

I have some text like

Code:
This is {$var} here


I get that text from a file, then I try to do

Code:
$parsed = $smarty->fetch($thatText);


But it's an infinite loop!

The simple case I found on the internet works:

Code:
<?php

require_once 'smarty\Smarty.class.php';
$smarty = new Smarty();

$smarty->assign('foo','value');
$template_string = 'display {$foo} here';

$ret=$smarty->fetch('string:'.$template_string);
print($ret);

?>


But my more complicated example that makes use of

Code:
$smarty->registerPlugin('function', 'getString', 'getLocalizedStringSmarty');


causes an infinite loop. I've spent the whole day on it. I can't figure it out.

When I print out the stack trace, I get stumped by some nonsense like this:

Code:
[file] => C:\Program Files (x86)\Bit9\Parity Console\WebUI\smarty\sysplugins\smarty_internal_template.php
            [line] => 371
            [function] => content_5b774379bd7116_14059517


I feel like maybe it's trying to render the entire template infinitely instead of just the string I'm passing? I don't know. Any ideas are welcome.
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qUJy5Xg0ve7k
Smarty Rookie


Joined: 15 Aug 2018
Posts: 15
PostPosted: Fri Aug 17, 2018 10:18 pm    Post subject: Reply with quote
Okay I've come up with some simple code to display the issue:

test.php:
Code:
<?php

require_once 'smarty/Smarty.class.php';
 
$smarty = new Smarty();
$smarty->addTemplateDir('../Smarty');


$smarty->assign('animal', 'falcon');

$smarty->registerPlugin('function', 'getString', 'getLocalizedStringSmarty');

function getLocalizedStringSmarty($params, &$smarty){
   return $smarty->display('string:I am a {$animal}');
}

$smarty->display('./test.tmpl');
?>


test.tmpl:
Code:
<?xml version="1.0" encoding="utf-8"?>
<html>
<head>
   <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
   <title>Test Page</title>
</head>

<body>
    Hello {getString id='foobar'}
</body>
</html>


In 3.1.11 the result is:
Code:
Hello I am a falcon


In 3.1.27 the result is an infinite loop. Changing display to fetch makes no difference.
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AnrDaemon
Administrator


Joined: 03 Dec 2012
Posts: 1785
PostPosted: Sat Aug 18, 2018 8:36 am    Post subject: Reply with quote
That can't be true.
dispay() displays the output directly.
You want fetch().

And you should not use byref, either.
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qUJy5Xg0ve7k
Smarty Rookie


Joined: 15 Aug 2018
Posts: 15
PostPosted: Sat Aug 18, 2018 4:46 pm    Post subject: Reply with quote
So you're saying I'm lying? Well that's a bizarre response. The code is all right there, you can test it for yourself. It works in 3.1.11, infinite loop in 3.1.27. Changing it to fetch is still an infinite loop.

Last edited by qUJy5Xg0ve7k on Sat Aug 18, 2018 5:20 pm; edited 1 time in total
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AnrDaemon
Administrator


Joined: 03 Dec 2012
Posts: 1785
PostPosted: Sat Aug 18, 2018 4:55 pm    Post subject: Reply with quote
Code:
<?php

require_once 'smarty-config.php';

$smarty->assign('animal', 'falcon');

$smarty->registerPlugin('function', 'getString', 'getLocalizedStringSmarty');

function getLocalizedStringSmarty($params, $smarty)
{
  return $smarty->fetch('string:I am a {$animal}');
}

$smarty->display(__FILE__);

__halt_compiler()
?><?xml version="1.0" encoding="utf-8"?>
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>Test Page</title>
</head>

<body>
    Hello {getString id='foobar'}
    Smarty: {$smarty.version|escape}
</body>
</html>

Code:
<?xml version="1.0" encoding="utf-8"?><html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title>Test Page</title>
</head>

<body>
    Hello I am a falcon
    Smarty: 3.1.33-dev-5
</body>
</html>
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qUJy5Xg0ve7k
Smarty Rookie


Joined: 15 Aug 2018
Posts: 15
PostPosted: Sat Aug 18, 2018 5:30 pm    Post subject: Reply with quote
Okay so it seems like it was a bug in 3.1.27 and it is fixed by 3.1.32. But I can't upgrade to that one because of the other bug, which still exists in 3.1.33, (https://www.smarty.net/forums/viewtopic.php?p=93618) so I need a workaround for 3.1.27. Or I guess I can keep going backwards until I find a version with neither bug.
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