name : Control_Field.php <?php /* vim: set expandtab shiftwidth=4 tabstop=4 softtabstop=4 foldmethod=marker: */ /** * Parser for MARC records * * This package is based on the PHP MARC package, originally called "php-marc", * that is part of the Emilda Project (http://www.emilda.org). Christoffer * Landtman generously agreed to make the "php-marc" code available under the * GNU LGPL so it could be used as the basis of this PEAR package. * * PHP version 5 * * LICENSE: This program is free software; you can redistribute it and/or modify * it under the terms of the GNU Lesser General Public License as published by * the Free Software Foundation; either version 2.1 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public License * along with this program; if not, write to the Free Software * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA * * @category File_Formats * @package File_MARC * @author Christoffer Landtman <landtman@realnode.com> * @author Dan Scott <dscott@laurentian.ca> * @copyright 2003-2008 Oy Realnode Ab, Dan Scott * @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1 * @version CVS: $Id: Control_Field.php 301737 2010-07-31 04:14:44Z dbs $ * @link http://pear.php.net/package/File_MARC */ // {{{ class File_MARC_Control_Field extends File_MARC_Field /** * The File_MARC_Control_Field class represents a single control field * in a MARC record. * * A MARC control field consists of a tag name and control data. * * @category File_Formats * @package File_MARC * @author Christoffer Landtman <landtman@realnode.com> * @author Dan Scott <dscott@laurentian.ca> * @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1 * @link http://pear.php.net/package/File_MARC */ class File_MARC_Control_Field extends File_MARC_Field { // {{{ Properties /** * Value of field, if field is a Control field * @var string */ protected $data; // }}} // {{{ Constructor: function __construct() /** * Field init function * * Create a new {@link File_MARC_Control_Field} object from passed arguments * * @param string $tag tag * @param string $data control field data * @param string $ind1 placeholder for class strictness * @param string $ind2 placeholder for class strictness */ function __construct($tag, $data, $ind1 = null, $ind2 = null) { $this->data = $data; parent::__construct($tag); } // }}} // {{{ Destructor: function __destruct() /** * Destroys the control field */ function __destruct() { $this->data = null; parent::__destruct(); } // }}} // {{{ Explicit destructor: function delete() /** * Destroys the control field * * @return true */ function delete() { $this->__destruct(); } // }}} // {{{ getData() /** * Get control field data * * @return string returns data in control field */ function getData() { return (string)$this->data; } // }}} // {{{ isEmpty() /** * Is empty * * Checks if the field contains data * * @return bool Returns true if the field is empty, otherwise false */ function isEmpty() { return ($this->data) ? false : true; } // }}} // {{{ setData() /** * Set control field data * * @param string $data data for the control field * * @return bool returns the new data in the control field */ function setData($data) { $this->data = $data; return $this->getData(); } // }}} // {{{ __toString() /** * Return as a formatted string * * Return the control field as a formatted string for pretty printing * * @return string Formatted output of control Field */ function __toString() { return sprintf("%3s %s", $this->tag, $this->data); } // }}} // {{{ toRaw() /** * Return as raw MARC * * Return the control field formatted in Raw MARC for saving into MARC files * * @return string Raw MARC */ function toRaw() { return (string)$this->data.File_MARC::END_OF_FIELD; } // }}} } // }}}