65 lines
2.7 KiB
PHP
65 lines
2.7 KiB
PHP
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<?php
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namespace App\Service\common\upload;
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use App\Service\common\UtilsService;
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/**
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* ListBucketResult 解析
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*
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* 阿里云 GET Bucket、腾讯云 GET Bucket、S3 ListObjectsV2 回的都是同一套
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* <ListBucketResult><Contents>… 结构，只有续拉游标的节点名不同（NextMarker /
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* NextContinuationToken）。三个驱动共用本 trait，避免同一段 XML 遍历写三遍。
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* 使用方需要有 $this->config 以及 ObjectKeyNormalizeTrait 提供的 key 规整方法。
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*/
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trait ObjectListXmlTrait
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{
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/**
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* @param string $xml 响应体
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* @param string $urlBase 未配置 domain 时兜底拼地址用的主机前缀（不带尾斜杠）
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* @param string $tokenNode 续拉游标节点名
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* @return array{items: array<int, array{key:string,size:int,hash:string,last_modified:int,url:string}>, next_marker: string, finished: bool}
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*/
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protected function parseObjectListXml(string $xml, string $urlBase, string $tokenNode = 'NextMarker'): array
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{
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$doc = @simplexml_load_string($xml);
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if ($doc === false) {
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UtilsService::getInstance()->errorThrow('列举结果解析失败，返回内容不是合法 XML');
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}
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$items = [];
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$lastRawKey = '';
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$contents = isset($doc->Contents) ? $doc->Contents : [];
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foreach ($contents as $node) {
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$rawKey = (string) $node->Key;
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// 续拉游标必须用服务端原样返回的 key，不能用补过 prefix 的规整值
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$lastRawKey = $rawKey;
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$key = $this->normalizeObjectKey($rawKey);
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if ($key === '' || str_ends_with($key, '/')) {
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// 以 / 结尾的是控制台建目录留下的占位对象，不是素材
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continue;
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}
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$items[] = [
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'key' => $key,
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'size' => (int) $node->Size,
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'hash' => strtolower(trim((string) $node->ETag, '"')),
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'last_modified' => (int) strtotime((string) $node->LastModified),
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'url' => $this->publicUrlOf($key, $urlBase . '/' . $key),
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];
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}
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$truncated = filter_var((string) ($doc->IsTruncated ?? 'false'), FILTER_VALIDATE_BOOLEAN);
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$next = isset($doc->{$tokenNode}) ? (string) $doc->{$tokenNode} : '';
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if ($truncated && $next === '' && $tokenNode === 'NextMarker') {
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// 部分兼容实现只给 IsTruncated 不给 NextMarker，按协议可用本页最后一个 key 续拉
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$next = $lastRawKey;
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}
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return [
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'items' => $items,
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'next_marker' => $truncated ? $next : '',
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'finished' => !$truncated || $next === '',
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];
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}
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}
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