ApiFormatWddx.php

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<?php
class ApiFormatWddx extends ApiFormatBase {

        public function getMimeType() {
                return 'text/xml';
        }

        public function execute() {
                // Some versions of PHP have a broken wddx_serialize_value, see
                // PHP bug 45314. Test encoding an affected character (U+00A0)
                // to avoid this.
                $expected = "<wddxPacket version='1.0'><header/><data><string>\xc2\xa0</string></data></wddxPacket>";
                if ( function_exists( 'wddx_serialize_value' )
                                && !$this->getIsHtml()
                                && wddx_serialize_value( "\xc2\xa0" ) == $expected ) {
                        $this->printText( wddx_serialize_value( $this->getResultData() ) );
                } else {
                        // Don't do newlines and indentation if we weren't asked
                        // for pretty output
                        $nl = ( $this->getIsHtml() ? '' : "\n" );
                        $indstr = ' ';
                        $this->printText( "<?xml version=\"1.0\"?>$nl" );
                        $this->printText( "<wddxPacket version=\"1.0\">$nl" );
                        $this->printText( "$indstr<header/>$nl" );
                        $this->printText( "$indstr<data>$nl" );
                        $this->slowWddxPrinter( $this->getResultData(), 4 );
                        $this->printText( "$indstr</data>$nl" );
                        $this->printText( "</wddxPacket>$nl" );
                }
        }

        function slowWddxPrinter( $elemValue, $indent = 0 ) {
                $indstr = ( $this->getIsHtml() ? '' : str_repeat( ' ', $indent ) );
                $indstr2 = ( $this->getIsHtml() ? '' : str_repeat( ' ', $indent + 2 ) );
                $nl = ( $this->getIsHtml() ? '' : "\n" );
                switch ( gettype( $elemValue ) ) {
                        case 'array':
                                // Check whether we've got an associative array (<struct>)
                                // or a regular array (<array>)
                                $cnt = count( $elemValue );
                                if ( $cnt == 0 || array_keys( $elemValue ) === range( 0, $cnt - 1 ) ) {
                                        // Regular array
                                        $this->printText( $indstr . Xml::element( 'array', array(
                                                'length' => $cnt ), null ) . $nl );
                                        foreach ( $elemValue as $subElemValue ) {
                                                $this->slowWddxPrinter( $subElemValue, $indent + 2 );
                                        }
                                        $this->printText( "$indstr</array>$nl" );
                                } else {
                                        // Associative array (<struct>)
                                        $this->printText( "$indstr<struct>$nl" );
                                        foreach ( $elemValue as $subElemName => $subElemValue ) {
                                                $this->printText( $indstr2 . Xml::element( 'var', array(
                                                        'name' => $subElemName
                                                ), null ) . $nl );
                                                $this->slowWddxPrinter( $subElemValue, $indent + 4 );
                                                $this->printText( "$indstr2</var>$nl" );
                                        }
                                        $this->printText( "$indstr</struct>$nl" );
                                }
                                break;
                        case 'integer':
                        case 'double':
                                $this->printText( $indstr . Xml::element( 'number', null, $elemValue ) . $nl );
                                break;
                        case 'string':
                                $this->printText( $indstr . Xml::element( 'string', null, $elemValue ) . $nl );
                                break;
                        default:
                                ApiBase::dieDebug( __METHOD__, 'Unknown type ' . gettype( $elemValue ) );
                }
        }

        public function getDescription() {
                return 'Output data in WDDX format' . parent::getDescription();
        }
}