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//home/cluster1/data/bu01/1121861/jlex/php5/field_size_counter.php5

<?

class field_size_counter {
    public $field_sizes;
    public $data;
    public $parser;

function __construct()
    {
	$this->field_sizes = array();
	$this->data = "";
    }

function startHandler($xp, $element, $attribs)
    {
	//echo "START: $element \n";
	//$element = strtolower($element);
    }

function endHandler($xp, $element)
    {
	//echo "END: $element \n";
	$element = strtolower($element);
	$size = strlen($this->data);
	if(array_key_exists($element,$this->field_sizes)) {
	    $max = $this->field_sizes[$element];
	    if($size > $max) {
		$this->field_sizes[$element] = $size;
	    }
	}
	else {
	    $this->field_sizes[$element] = $size;
	}
	$this->data = "";
    }

function cDataHandler($xp, $data) {
	$data = trim($data);
	if($data != "") {
	    $data = ereg_replace("&amp;","&",$data);
	    $data = ereg_replace("&lt;","<",$data);
	    $data = ereg_replace("&gt;",">",$data);
	    $this->data .= $data;
	}
    }
    
    
    
    function get_field_sizes($xml) {        
	$in = fopen($xml,"r");
	$this->parser = xml_parser_create();
	xml_set_object($this->parser,$this);
	xml_set_element_handler($this->parser,"startHandler","endHandler");
	xml_set_character_data_handler($this->parser,"cDataHandler");
	while($line = fgets($in)) {
	    $line = ereg_replace("&","&amp;",$line);
	    
	    $good_parse = xml_parse($this->parser,$line,false);
	    if(!$good_parse) {
		echo "there was an error <BR>";
	    }
	}
	xml_parser_free($this->parser);
	return $this->field_sizes;
    }

}
/*
//error_reporting(0);
set_time_limit(20000);
$counter = new field_size_counter();
$sizes = $counter->get_field_sizes("modified_ActiveNahuatl_2005_august_final.xml");
foreach($sizes as $field=>$size) {
    echo "$field : $size \n";
}
*/
?>