log_iterator.inc

<?php
class Log_Iterator
{


    protected $offset;
    protected $logname;
    protected $rotation_index;
    protected $total_size;


    function __construct($logname, $rotation_index=NULL)
    {
        $this->offset     = 0;
        $this->logname    = $logname;
        $this->rotation_index = $rotation_index;

        $log_manager = $GLOBALS['SQ_SYSTEM']->am->getSystemAsset('log_manager');
        $this->total_size = $log_manager->getLogSize($this->logname, $this->rotation_index);

        if (empty($this->total_size)) {
            $this->total_size = 0;
        }

    }//end constructor


    public function getNextEntry()
    {
        if ($this->offset < $this->total_size) {
            $log_manager = $GLOBALS['SQ_SYSTEM']->am->getSystemAsset('log_manager');
            $line =& $log_manager->getLogLine($this->logname, $this->rotation_index, $this->offset);
            $line_offset = array_get_index($line, 'offset', FALSE);

            if ($line_offset != FALSE && $line_offset >= 0) {
                $this->offset = $line_offset;
            }

            return array_get_index($line, 'line', FALSE);

        } else {
            return FALSE;
        }

    }//end getNextEntry()


    public function getLastEntry()
    {
        $last_entry = FALSE;
        while($line=$this->getNextEntry()) {
            if ($line) {
                $last_entry = $line;
            }
        }

        return $last_entry;

    }//end function getLastEntry()


    public function &getCurrentProgress()
    {
        $result = Array(
                    'current'   => $this->offset,
                    'total'     => $this->total_size,
                  );

        return $result;

    }//end getCurrentProgress()


}//end class


?>