FileNameParser.php

<?php

include_once './FileNameComponent.php';

/**
 * Provides methods to parse file name into meaningful parts.
 *
 * @author  pcdinh
 * @since   July 25, 2009
 * @version $Id$
 */
class FileNameParser
{
    /**
     * Parses file names into meaningful parts.
     *
     * @param  string $fileName
     * @return FileNameComponent
     */
    public function parse($fileName)
    {
        $parsed  = new FileNameComponent();
        $pattern = '#^([a-z]{3}[0-9]{9})\.([0-9]{4})\.([1|1N|2|2N|3|3N|4|4N|A|AMF|COB|K|L|P|U|Y]{1})\.([0-9]{2})\.([L|E]{1})\.([0-9]{2})\.([0-9]{2})\.([A-Z]{3,4})$#i';
        $matched = preg_match($pattern, $fileName, $matches);

        if (0 === $matched || false === $matched)
        {
            $parsed->format = FileNameFormat::UNKNOWN_FORMAT;
            return $parsed;
        }

        $parsed->wvbNumber = $matches[1];
        $parsed->year      = $matches[2];
        $parsed->docType   = $matches[3];
        $parsed->section   = $matches[4];
        $parsed->language  = $matches[5];
        $parsed->month     = $matches[6];
        $parsed->day       = $matches[7];
        $parsed->extension = $matches[8];
        $parsed->format    = FileNameFormat::NEW_FORMAT_2;
        return $parsed;
    }
}

/**
 * Exception can be thrown when file name format is not valid.
 *
 * @author pcdinh
 * @since  July 24, 2009
 */
class FileNameParsingException extends Exception {}

?>