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<?php // vim: ts=4 sw=4
// For use in process.php
// true,false,null -> entities
function apply($input)
{
$from = '/([^a-zA-Z$._-])(true|false|null)([^a-zA-Z$_-])/i';
$to = "\\1&\\2;\\3";
$lines = explode("\n",$input);
$active = TRUE;
foreach ($lines as $nr => $line)
{
$active = $active && !ereg('<programlisting',$line);
$active = $active || ereg('</programlisting',$line);
if ($active)
$lines[$nr] = substr(preg_replace( $from , $to , $line.' ' ),0,-1);
}
$output = implode("\n",$lines);
// lowercase the entities:
$output = eregi_replace('&true;','&true;',$output);
$output = eregi_replace('&false;','&false;',$output);
$output = eregi_replace('&null;','&null;',$output);
$from = '/(<constant>)?(<literal>)?&(true|false|null);(<\/constant>)?(<\/literal>)?/';
$to = "&\\3;";
$output = preg_replace($from,$to,$output);
$output = ereg_replace('<type>&null;</type>','<type>null</type>',$output);
return $output;
}
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