/**
* Function to emulate the fnmatch function from UNIX which is not available on all servers.
*
* @remark
* This function is a reformatted version of the function found on:
* http://www.php.net/manual/en/function.fnmatch.php#31353
*
* @param $pattern Pattern to match the file against.
* @param $file File name that needs to be checked.
*
* @return Boolean indicating if the file matched the pattern or not.
*
* @internal
*/
function _match($pattern, $file)
{
// Loop over the characters of the pattern
for ($i = 0; $i < strlen($pattern); $i++) {
// Character is a *
if ($pattern[$i] == '*') {
for ($c = $i; $c < max(strlen($pattern), strlen($file)); $c++) {
if (YDFSDirectory::_match(substr($pattern, $i + 1), substr($file, $c))) {
return true;
}
}
return false;
}
// Pattern is a [
if ($pattern[$i] == '[') {
$letter_set = array();
for ($c = $i + 1; $c < strlen($pattern); $c++) {
if ($pattern[$c] != ']') {
array_push($letter_set, $pattern[$c]);
} else {
break;
}
}
foreach ($letter_set as $letter) {
if (YDFSDirectory::_match($letter . substr($pattern, $c + 1), substr($file, $i))) {
return true;
}
}
return false;
}
// Pattern is a ?
if ($pattern[$i] == '?') {
continue;
}
// Pattern not the same as the file character
if ($pattern[$i] != $file[$i]) {
return false;
}
}
// All the rest returns positive
return true;
}
