Diese Funktion nutzt den Tokenizer um den Sourcecode durch weglassen von Whitespace und Kommentaren zu komprimieren.
Achtung, das ganze funktioniert nur sehr rudimentär. Aktuell gibt es z.B. bei Dollar und Backslashes innerhalb von Strings Probleme. Wie man sie oft bei rexexp-pattern hat. Also immer testen ob der Code nach dem komprimieren auch wirklich noch funktioniert.
<?php
/**
* TrimSource()
*/
function TrimSource($source)
{
$tokens = token_get_all($source);
// Init
$source = '';
$was_ws = false;
$nl = '';
$spacer = '';
$beforespacer = '';
// Process
foreach ($tokens as $token) {
if (is_string($token)) {
// Single character tokens
$source .= $token.$nl;
$nl = '';
} else {
list($id, $text) = $token;
// echo token_name($id).' ';
switch ($id) {
// Skip all comments
case T_COMMENT:
case T_ML_COMMENT:
// case T_DOC_COMMENT:
break;
case T_END_HEREDOC:
$source .= $text;
$nl = "\n";
break;
// Remove whitespace
case T_WHITESPACE:
// We don't want more than one whitespace in a row replaced
if ($was_ws !== true) {
$source .= '';
}
$was_ws = true;
break;
/*
case T_STRING:
$source .= 'String Content';
break;
*/
case T_AS:
$beforespacer = ' ';
case T_CASE:
case T_RETURN:
case T_FUNCTION:
case T_CLASS:
$spacer = ' ';
default:
$was_ws = false;
$source .= $beforespacer.$text.$spacer;
$spacer = '';
$beforespacer = '';
break;
}
}
}
return $source;
}
$size_uncompressed = 0;
$theValue = '';
if (!empty($_POST['theValue'])){
$_POST['theValue'] = get_magic_quotes_gpc()
? stripslashes($_POST['theValue'])
: $_POST['theValue'];
$size_uncompressed = strlen($_POST['theValue']);
$theValue = htmlentities($_POST['theValue']);
$jsw = TrimSource($_POST['theValue']);
$size_compressed = strlen($jsw);
$percent_compressed = number_format($size_compressed / $size_uncompressed *100,2,',','.');
$data = htmlentities($jsw);
if (!isset($_POST['doitnow'])) {
$jsw = '';
}else{
$jsw = '<script type="text/javascript">'."\n".$jsw."\n</script>";
}
echo <<< EOT
<h2>$size_compressed $percent_compressed %</h2>
<pre style="background-color:#e1e1e1;padding:20px;border:2px solid #000;">
$data
</pre>
EOT;
}
echo <<< EOT
<h2>$size_uncompressed 100%</h2>
<form action="{$_SERVER['PHP_SELF']}" method="post" enctype="multipart/form-data">
<textarea style="display:block;" cols="50" rows="10" name="theValue">$theValue</textarea>
<input style="display:block;" type="submit" value="Snippet hochladen">
</form>
EOT;
?>
