晋太元中,武陵人捕鱼为业。缘溪行,忘路之远近。忽逢桃花林,夹岸数百步,中无杂树,芳草鲜美,落英缤纷。渔人甚异之,复前行,欲穷其林。 林尽水源,便得一山,山有小口,仿佛若有光。便舍船,从口入。初极狭,才通人。复行数十步,豁然开朗。土地平旷,屋舍俨然,有良田、美池、桑竹之属。阡陌交通,鸡犬相闻。其中往来种作,男女衣着,悉如外人。黄发垂髫,并怡然自乐。 见渔人,乃大惊,问所从来。具答之。便要还家,设酒杀鸡作食。村中闻有此人,咸来问讯。自云先世避秦时乱,率妻子邑人来此绝境,不复出焉,遂与外人间隔。问今是何世,乃不知有汉,无论魏晋。此人一一为具言所闻,皆叹惋。余人各复延至其家,皆出酒食。停数日,辞去。此中人语云:“不足为外人道也。”(间隔 一作:隔绝) 既出,得其船,便扶向路,处处志之。及郡下,诣太守,说如此。太守即遣人随其往,寻向所志,遂迷,不复得路。 南阳刘子骥,高尚士也,闻之,欣然规往。未果,寻病终。后遂无问津者。
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<?php declare(strict_types = 1);
/*
* This file is part of PharIo\Manifest.
*
* Copyright (c) Arne Blankerts <arne@blankerts.de>, Sebastian Heuer <sebastian@phpeople.de>, Sebastian Bergmann <sebastian@phpunit.de> and contributors
*
* 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;
use Throwable;
use function count;
use function file_get_contents;
use function is_file;
use function libxml_clear_errors;
use function libxml_get_errors;
use function libxml_use_internal_errors;
use function sprintf;
class ManifestDocument {
public const XMLNS = 'https://phar.io/xml/manifest/1.0';
/** @var DOMDocument */
private $dom;
public static function fromFile(string $filename): ManifestDocument {
if (!is_file($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();
try {
$dom = new DOMDocument();
$dom->loadXML($xmlString);
$errors = libxml_get_errors();
libxml_use_internal_errors($prev);
} catch (Throwable $t) {
throw new ManifestDocumentException($t->getMessage(), 0, $t);
}
if (count($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;
}
}