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35 lines
1.3 KiB
TypeScript
35 lines
1.3 KiB
TypeScript
/**
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* Copyright (c) Microsoft Corporation.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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import type { SelectorEngine, SelectorRoot } from './selectorEngine';
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export const XPathEngine: SelectorEngine = {
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queryAll(root: SelectorRoot, selector: string): Element[] {
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if (selector.startsWith('/') && root.nodeType !== Node.DOCUMENT_NODE)
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selector = '.' + selector;
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const result: Element[] = [];
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const document = root.ownerDocument || root;
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if (!document)
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return result;
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const it = document.evaluate(selector, root, null, XPathResult.ORDERED_NODE_ITERATOR_TYPE);
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for (let node = it.iterateNext(); node; node = it.iterateNext()) {
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if (node.nodeType === Node.ELEMENT_NODE)
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result.push(node as Element);
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}
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return result;
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}
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};
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