32baa6af7a
Given that we only create *one* instance of this class per `getDocument` call, this shouldn't matter performance wise.
52 lines
1.6 KiB
JavaScript
52 lines
1.6 KiB
JavaScript
/* Copyright 2017 Mozilla Foundation
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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 { CMapCompressionType } from '../../src/shared/util';
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class NodeCMapReaderFactory {
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constructor({ baseUrl = null, isCompressed = false, }) {
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this.baseUrl = baseUrl;
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this.isCompressed = isCompressed;
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}
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fetch({ name, }) {
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if (!name) {
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return Promise.reject(new Error('CMap name must be specified.'));
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}
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return new Promise((resolve, reject) => {
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let url = this.baseUrl + name + (this.isCompressed ? '.bcmap' : '');
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let fs = require('fs');
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fs.readFile(url, (error, data) => {
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if (error || !data) {
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reject(new Error('Unable to load ' +
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(this.isCompressed ? 'binary ' : '') +
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'CMap at: ' + url));
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return;
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}
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resolve({
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cMapData: new Uint8Array(data),
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compressionType: this.isCompressed ?
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CMapCompressionType.BINARY : CMapCompressionType.NONE,
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});
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});
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});
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}
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}
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export {
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NodeCMapReaderFactory,
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};
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