Psso/XMLResponse.php


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<?php
namespace Psso;

class XMLResponse {
    public \SimpleXMLElement $doc;
    private static array $stylesheets;
    private static array $runFirst;

    static function addStylesheet(string $path) {
        $sheet = \Dom\XMLDocument::createFromFile($path);
        self::$stylesheets[] = $sheet;
    }

    static function addPreamble(callable $preamble) {
        self::$runFirst[] = $preamble;
    }

    function __construct(string $rootElement = 'page') {
        $this->doc = new \SimpleXMLElement("<$rootElement/>");
        foreach (self::$runFirst as $fn) {
            $fn($this->doc);
        }
    }

    function sendRaw() {
        header('Content-Type: application/xml');
        echo $this->doc->asXML();
    }

    function send() {
        if (isset($_GET['RawXML'])) {
            $this->sendRaw();
            return;
        }

        //header('Content-Type: application/xhtml+xml');
        $processor = new \XSLTProcessor;
        foreach (self::$stylesheets as $sheet) {
            $processor->importStylesheet($sheet);
        }
        $root = \Dom\import_simplexml($this->doc);
        echo $processor->transformToXml($root);
    }
}