/**
* Read in MARC records
*
* This function reads in MARC record files or strings that
* contain one or more MARC 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);
* ?>
* </code>
*
* @param string $source Name of the file, or a raw MARC string
* @param int $type Source of the input, either SOURCE_FILE or SOURCE_STRING
*/
function __construct($source, $type = self::SOURCE_FILE)
{
parent::__construct($source, $type);
switch ($type) {
case self::SOURCE_FILE:
$this->type = self::SOURCE_FILE;
$this->source = fopen($source, 'rb');
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);
}
break;
case self::SOURCE_STRING:
$this->type = self::SOURCE_STRING;
$this->source = explode(File_MARC::END_OF_RECORD, $source);
break;
default:
throw new File_MARC_Exception(File_MARC_Exception::$messages[File_MARC_Exception::ERROR_INVALID_SOURCE], File_MARC_Exception::ERROR_INVALID_SOURCE);
}
}
/**
* Read in MARCXML records
*
* This function reads in files or strings 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 $source Name of the file, or a raw MARC string
* @param int $type Source of the input, either SOURCE_FILE or SOURCE_STRING
* @param string $ns URI or prefix of the namespace
* @param bool $is_prefix TRUE if $ns is a prefix, FALSE if it's a URI; defaults to FALSE
*/
function __construct($source, $type = self::SOURCE_FILE, $ns = "", $is_prefix = false)
{
parent::__construct($source, $type);
$this->counter = 0;
switch ($type) {
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);
}
}