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<?php declare(strict_types = 1);
/*
* This file is part of PharIo\Manifest.
*
* (c) Arne Blankerts <[email protected]>, Sebastian Heuer <[email protected]>, Sebastian Bergmann <[email protected]>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace PharIo\Manifest;
use DOMDocument;
use DOMElement;
class ManifestDocument {
public const XMLNS = 'https://phar.io/xml/manifest/1.0';
/** @var DOMDocument */
private $dom;
public static function fromFile(string $filename): ManifestDocument {
if (!\file_exists($filename)) {
throw new ManifestDocumentException(
\sprintf('File "%s" not found', $filename)
);
}
return self::fromString(
\file_get_contents($filename)
);
}
public static function fromString(string $xmlString): ManifestDocument {
$prev = \libxml_use_internal_errors(true);
\libxml_clear_errors();
$dom = new DOMDocument();
$dom->loadXML($xmlString);
$errors = \libxml_get_errors();
\libxml_use_internal_errors($prev);
if (\count($errors) !== 0) {
throw new ManifestDocumentLoadingException($errors);
}
return new self($dom);
}
private function __construct(DOMDocument $dom) {
$this->ensureCorrectDocumentType($dom);
$this->dom = $dom;
}
public function getContainsElement(): ContainsElement {
return new ContainsElement(
$this->fetchElementByName('contains')
);
}
public function getCopyrightElement(): CopyrightElement {
return new CopyrightElement(
$this->fetchElementByName('copyright')
);
}
public function getRequiresElement(): RequiresElement {
return new RequiresElement(
$this->fetchElementByName('requires')
);
}
public function hasBundlesElement(): bool {
return $this->dom->getElementsByTagNameNS(self::XMLNS, 'bundles')->length === 1;
}
public function getBundlesElement(): BundlesElement {
return new BundlesElement(
$this->fetchElementByName('bundles')
);
}
private function ensureCorrectDocumentType(DOMDocument $dom): void {
$root = $dom->documentElement;
if ($root->localName !== 'phar' || $root->namespaceURI !== self::XMLNS) {
throw new ManifestDocumentException('Not a phar.io manifest document');
}
}
private function fetchElementByName(string $elementName): DOMElement {
$element = $this->dom->getElementsByTagNameNS(self::XMLNS, $elementName)->item(0);
if (!$element instanceof DOMElement) {
throw new ManifestDocumentException(
\sprintf('Element %s missing', $elementName)
);
}
return $element;
}
}
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