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Prefilter cache

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kataxxx
Smarty Rookie

Joined: 08 Apr 2012
Posts: 10

Posted: Sat Apr 21, 2012 3:26 pm Post subject: Prefilter cache

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Hei.
I want to have more compact cache files. They contain many whitespaces => more memory.
I have this code that is not working right:

Code:

function smarty_prefilter_pre($output, &$smarty)
{
$output = str_replace(
array("\t", "\n")
, '', $tpl_output);
$output = preg_replace('/class=[\'"][ ]*(\w*)[ ]*[\'"]/', 'class=$1', $output);
$output = preg_replace('/class=[\'"][\'"]/', '', $output);
return $output;
}

and:

$this->_smarty->loadFilter('pre','pre');
echo smarty_prefilter_pre($this->_smarty->fetch($tpl, $cache_id));

If I do something like

Code:

function smarty_prefilter_pre($output, &$smarty)
{
echo $output;
return $output;
}

No output is displayed.
Thanks!

Last edited by kataxxx on Wed Apr 25, 2012 4:39 pm; edited 2 times in total

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rodneyrehm
Administrator

Joined: 30 Mar 2007
Posts: 698
Location: Germany, border to Switzerland

Posted: Sat Apr 21, 2012 10:48 pm Post subject:

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Code:

function smarty_prefilter_pre($output, &$smarty) {
$output = str_replace(… $tpl_output);

"$output" !== "$tpl_output"

You should also note that you are stripping all kinds of whitespace you might not really want to strip. Have a look at outputfilter.trimwhitespace.php (in your plugins directory).
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kataxxx
Smarty Rookie

Joined: 08 Apr 2012
Posts: 10

Posted: Wed Apr 25, 2012 3:23 pm Post subject:

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rodneyrehm wrote:

Code:

function smarty_prefilter_pre($output, &$smarty) {
$output = str_replace(… $tpl_output);

"$output" !== "$tpl_output"

You should also note that you are stripping all kinds of whitespace you might not really want to strip. Have a look at outputfilter.trimwhitespace.php (in your plugins directory).

Yeah, that's wrong.
That's because of the fact that i copied and paste.
I edited my post, but my problem is still unsolved.
I need an output cache-filter if you could understand me. I also want to gzip the files cached, with a function that I want to create and add to this output cache-filter.
Do you falllow me?

PS: Thanks for the plugin name.

Last edited by kataxxx on Wed Apr 25, 2012 4:39 pm; edited 1 time in total

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U.Tews
Administrator

Joined: 22 Nov 2006
Posts: 4175
Location: Hamburg / Germany

Posted: Wed Apr 25, 2012 4:21 pm Post subject:

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Note that prefilter run before a template gets compiled it does not help at all for your case.

Use an output filter.
Why does outputfilter.trimwhitespace.php not do the job?

Filters which are loaded exceute automatically.

Quote:

echo smarty_prefilter_pre($this->_smarty->fetch($tpl, $cache_id));

is sort of nonesense.

Just try

Code:

$this->_smarty->loadFilter('output','trimwhitespace');
$this->_smarty->display($tpl, $cache_id);

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