'WXR_Parser_SimpleXML',
'xml' => 'WXR_Parser_XML',
'regex' => 'WXR_Parser_Regex',
'xmlprocessor' => 'WXR_Parser_XML_Processor',
);
if ( isset( $available_parsers[ $preferred_parser ] ) ) {
$parser = new $available_parsers[ $preferred_parser ]();
$result = $parser->parse( $file );
} else {
_doing_it_wrong( __FUNCTION__, sprintf( __( 'Invalid parser specified: %s', 'wordpress-importer' ), $preferred_parser ), '0.9.0' );
$result = new WP_Error( 'invalid_parser', sprintf( __( 'Invalid parser specified: %s', 'wordpress-importer' ), $preferred_parser ) );
}
// If XMLParser succeeds or this is an invalid WXR file then return the results
if ( ! is_wp_error( $result ) || 'XML_parse_error' != $result->get_error_code() ) {
return $result;
}
} else {
// Attempt to auto-select the best XML parser based on available extensions
if ( extension_loaded( 'simplexml' ) ) {
$parser = new WXR_Parser_SimpleXML();
$result = $parser->parse( $file );
// If SimpleXML succeeds or this is an invalid WXR file then return the results
if ( ! is_wp_error( $result ) || 'SimpleXML_parse_error' != $result->get_error_code() ) {
return $result;
}
} elseif ( extension_loaded( 'xml' ) ) {
$parser = new WXR_Parser_XML();
$result = $parser->parse( $file );
// If XMLParser succeeds or this is an invalid WXR file then return the results
if ( ! is_wp_error( $result ) || 'XML_parse_error' != $result->get_error_code() ) {
return $result;
}
}
}
// We have a malformed XML file, so display the error and fallthrough to regex
if ( isset( $result ) && defined( 'IMPORT_DEBUG' ) && IMPORT_DEBUG ) {
echo '';
if ( 'SimpleXML_parse_error' == $result->get_error_code() ) {
foreach ( $result->get_error_data() as $error ) {
echo $error->line . ':' . $error->column . ' ' . esc_html( $error->message ) . "\n";
}
} elseif ( 'XML_parse_error' == $result->get_error_code() ) {
$error = $result->get_error_data();
echo $error[0] . ':' . $error[1] . ' ' . esc_html( $error[2] );
}
echo '';
echo '' . __( 'There was an error when reading this WXR file', 'wordpress-importer' ) . '
';
echo __( 'Details are shown above. The importer will now try again with a different parser...', 'wordpress-importer' ) . '
';
}
// use regular expressions if nothing else available or this is bad XML
$parser = new WXR_Parser_XML_Processor();
return $parser->parse( $file );
}
}