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EDIT :: MARCXML.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 Dan Scott <dscott@laurentian.ca> * @copyright 2007-2010 Dan Scott * @license http://www.gnu.org/copyleft/lesser.html LGPL License 2.1 * @version CVS: $Id$ * @link http://pear.php.net/package/File_MARC * @example read.php Retrieve specific fields and subfields from a record * @example subfields.php Create new subfields and add them in specific order * @example marc_yaz.php Pretty print a MARC record retrieved through the PECL yaz extension */ require_once 'PEAR/Exception.php'; require_once 'File/MARCBASE.php'; require_once 'File/MARC.php'; require_once 'File/MARC/Record.php'; require_once 'File/MARC/Field.php'; require_once 'File/MARC/Control_Field.php'; require_once 'File/MARC/Data_Field.php'; require_once 'File/MARC/Subfield.php'; require_once 'File/MARC/Exception.php'; require_once 'File/MARC/List.php'; // {{{ class File_MARCXML /** * The main File_MARCXML class enables you to return File_MARC_Record * objects from an XML stream or string. * * @category File_Formats * @package File_MARC * @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_MARCXML extends File_MARCBASE { // {{{ constants /** * MARC records retrieved from a file */ const SOURCE_FILE = 1; /** * MARC records retrieved from a binary string */ const SOURCE_STRING = 2; // }}} /** * MARC records retrieved from a SimpleXMLElement object */ const SOURCE_SIMPLEXMLELEMENT = 3; // }}} // {{{ properties /** * Source containing raw records * * @var resource */ protected $source; /** * Source type (SOURCE_FILE or SOURCE_STRING) * * @var int */ protected $type; /** * Counter for MARCXML records in a collection * * @var int */ protected $counter; /** * XMLWriter for writing collections * * @var XMLWriter */ protected $xmlwriter; // }}} // {{{ Constructor: function __construct() /** * Read in MARCXML records * * This function reads in files, strings or SimpleXMLElement objects that * contain one or more MARCXML records. * * <code> * <?php * // Retrieve MARC records from a file * $journals = new File_MARC('journals.mrc', SOURCE_FILE); * * // Retrieve MARC records from a string (e.g. Z39 query results) * $monographs = new File_MARC($raw_marc, SOURCE_STRING); * * // Retrieve MARCXML records from a string with a namespace URL * $records = new File_MARCXML($xml_data, File_MARC::SOURCE_STRING,"http://www.loc.gov/MARC21/slim"); * * // Retrieve MARCXML records from a file with a namespace prefix * $records = new File_MARCXML($xml_data, File_MARC::SOURCE_FILE,"marc",true); * ?> * </code> * * @param string|SimpleXMLElement $source Filename, raw MARC string or SimpleXMLElement object * @param int $type Source of the input, either SOURCE_FILE, SOURCE_STRING or SOURCE_SIMPLEXMLELEMENT * @param string $ns URI or prefix of the namespace * @param bool $is_prefix TRUE if $ns is a prefix, FALSE if it's a URI; defaults to FALSE * @param string $record_class Record class, defaults to File_MARC_Record */ function __construct($source, $type = self::SOURCE_FILE, $ns = "", $is_prefix = false, $record_class = null) { parent::__construct($source, $type, $record_class); $this->counter = 0; if ($source instanceof \SimpleXMLElement) { $type = self::SOURCE_SIMPLEXMLELEMENT; } switch ($type) { case self::SOURCE_SIMPLEXMLELEMENT: $this->type = self::SOURCE_SIMPLEXMLELEMENT; $this->source = $source; break; case self::SOURCE_FILE: $this->type = self::SOURCE_FILE; $this->source = simplexml_load_file($source, "SimpleXMLElement", 0, $ns, $is_prefix); break; case self::SOURCE_STRING: $this->type = self::SOURCE_STRING; $this->source = simplexml_load_string($source, "SimpleXMLElement", 0, $ns, $is_prefix); break; default: throw new File_MARC_Exception(File_MARC_Exception::$messages[File_MARC_Exception::ERROR_INVALID_SOURCE], File_MARC_Exception::ERROR_INVALID_SOURCE); } if (!$this->source) { $errorMessage = File_MARC_Exception::formatError(File_MARC_Exception::$messages[File_MARC_Exception::ERROR_INVALID_FILE], array('filename' => $source)); throw new File_MARC_Exception($errorMessage, File_MARC_Exception::ERROR_INVALID_FILE); } } // }}} // {{{ next() /** * Return next {@link File_MARC_Record} object * * Decodes the next MARCXML record and returns the {@link File_MARC_Record} * object. * <code> * <?php * // Retrieve a set of MARCXML records from a file * $journals = new File_MARCXML('journals.xml', SOURCE_FILE); * * // Iterate through the retrieved records * while ($record = $journals->next()) { * print $record; * print "\n"; * } * * ?> * </code> * * @return File_MARC_Record next record, or false if there are * no more records */ function next() { if (isset($this->source->record[$this->counter])) { $record = $this->source->record[$this->counter++]; } elseif ($this->source->getName() == "record" && $this->counter == 0) { $record = $this->source; $this->counter++; } else { return false; } if ($record) { return $this->_decode($record); } else { return false; } } // }}} // {{{ _decode() /** * Decode a given MARCXML record * * @param string $text MARCXML record element * * @return File_MARC_Record Decoded File_MARC_Record object */ private function _decode($text) { $marc = new $this->record_class($this); // Store leader $marc->setLeader($text->leader); // go through all the control fields foreach ($text->controlfield as $controlfield) { $controlfieldattributes = $controlfield->attributes(); $marc->appendField(new File_MARC_Control_Field((string)$controlfieldattributes['tag'], $controlfield)); } // go through all the data fields foreach ($text->datafield as $datafield) { $datafieldattributes = $datafield->attributes(); $subfield_data = array(); foreach ($datafield->subfield as $subfield) { $subfieldattributes = $subfield->attributes(); $subfield_data[] = new File_MARC_Subfield((string)$subfieldattributes['code'], $subfield); } // If the data is invalid, let's just ignore the one field try { $new_field = new File_MARC_Data_Field((string)$datafieldattributes['tag'], $subfield_data, $datafieldattributes['ind1'], $datafieldattributes['ind2']); $marc->appendField($new_field); } catch (Exception $e) { $marc->addWarning($e->getMessage()); } } return $marc; } // }}} } // }}}

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