<?php

/**

 * IXR_Value

 *

 * @package IXR

 * @since 1.5.0

 */

class IXR_Value {

    var $data;

    var $type;

	/**

	 * PHP5 constructor.

	 */

	function __construct( $data, $type = false )

    {

        $this->data = $data;

        if (!$type) {

            $type = $this->calculateType();

        }

        $this->type = $type;

        if ($type == 'struct') {

            // Turn all the values in the array in to new IXR_Value objects

            foreach ($this->data as $key => $value) {

                $this->data[$key] = new IXR_Value($value);

            }

        }

        if ($type == 'array') {

            for ($i = 0, $j = count($this->data); $i < $j; $i++) {

                $this->data[$i] = new IXR_Value($this->data[$i]);

            }

        }

    }

	/**

	 * PHP4 constructor.

	 */

	public function IXR_Value( $data, $type = false ) {

		self::__construct( $data, $type );

	}

    function calculateType()

    {

        if ($this->data === true || $this->data === false) {

            return 'boolean';

        }

        if (is_integer($this->data)) {

            return 'int';

        }

        if (is_double($this->data)) {

            return 'double';

        }

        // Deal with IXR object types base64 and date

        if (is_object($this->data) && is_a($this->data, 'IXR_Date')) {

            return 'date';

        }

        if (is_object($this->data) && is_a($this->data, 'IXR_Base64')) {

            return 'base64';

        }

        // If it is a normal PHP object convert it in to a struct

        if (is_object($this->data)) {

            $this->data = get_object_vars($this->data);

            return 'struct';

        }

        if (!is_array($this->data)) {

            return 'string';

        }

        // We have an array - is it an array or a struct?

        if ($this->isStruct($this->data)) {

            return 'struct';

        } else {

            return 'array';

        }

    }

    function getXml()

    {

        // Return XML for this value

        switch ($this->type) {

            case 'boolean':

                return '<boolean>'.(($this->data) ? '1' : '0').'</boolean>';

                break;

            case 'int':

                return '<int>'.$this->data.'</int>';

                break;

            case 'double':

                return '<double>'.$this->data.'</double>';

                break;

            case 'string':

                return '<string>'.htmlspecialchars($this->data).'</string>';

                break;

            case 'array':

                $return = '<array><data>'."\n";

                foreach ($this->data as $item) {

                    $return .= '  <value>'.$item->getXml()."</value>\n";

                }

                $return .= '</data></array>';

                return $return;

                break;

            case 'struct':

                $return = '<struct>'."\n";

                foreach ($this->data as $name => $value) {

					$name = htmlspecialchars($name);

                    $return .= "  <member><name>$name</name><value>";

                    $return .= $value->getXml()."</value></member>\n";

                }

                $return .= '</struct>';

                return $return;

                break;

            case 'date':

            case 'base64':

                return $this->data->getXml();

                break;

        }

        return false;

    }

    /**

     * Checks whether or not the supplied array is a struct or not

     *

     * @param array $array

     * @return bool

     */

    function isStruct($array)

    {

        $expected = 0;

        foreach ($array as $key => $value) {

            if ((string)$key !== (string)$expected) {

                return true;

            }

            $expected++;

        }

        return false;

    }

}