weathermap

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[/] [lib/] [datasources/] [WeatherMapDataSource_tabfile.php] - Rev 114 Go to most recent revision
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<?php
// Sample Pluggable datasource for PHP Weathermap 0.9
// - read a pair of values from a database, and return it

// TARGET dbplug:databasename:username:pass:hostkey

class WeatherMapDataSource_tabfile extends WeatherMapDataSource {

        function Recognise($targetstring)
        {
                if(preg_match("/\.(tsv|txt)$/",$targetstring,$matches))
                {
                        return TRUE;
                }
                else
                {
                        return FALSE;
                }
        }

        // function ReadData($targetstring, $configline, $itemtype, $itemname, $map)
        function ReadData($targetstring, &$map, &$item)
        {
                $data[IN] = NULL;
                $data[OUT] = NULL;
                $data_time=0;
                $itemname = $item->name;

                $matches=0;

                $fd=fopen($targetstring, "r");

                if ($fd)
                {
                        while (!feof($fd))
                        {
                                $buffer=fgets($fd, 4096);
                                # strip out any Windows line-endings that have gotten in here
                                $buffer=str_replace("\r", "", $buffer);

                                if (preg_match("/^$itemname\t(\d+\.?\d*[KMGT]*)\t(\d+\.?\d*[KMGT]*)/", $buffer, $matches))
                                {
                                        $data[IN]=unformat_number($matches[1]);
                                        $data[OUT]=unformat_number($matches[2]);
                                }
                        }
                        $stats = stat($targetstring);
                        $data_time = $stats['mtime'];
                }
                else {
                        // some error code to go in here
                        debug ("TabText ReadData: Couldn't open ($targetstring). \n"); }
                
                        debug ("TabText ReadData: Returning (".($data[IN]===NULL?'NULL':$data[IN]).",".($data[OUT]===NULL?'NULL':$data[OUT]).",$data_time)\n");
                
                        return( array($data[IN], $data[OUT], $data_time) );
        }
}

// vim:ts=4:sw=4:
?>