41415ba0a2
It seems that the status check, for non-HTTP loads, causes the default viewer to *refuse* to open local PDF files. ***STR:*** 1. Make sure that fetch support is enabled in the browser. In Firefox Nightly, set `dom.streams.enabled = true` and `javascript.options.streams = true` in `about:config`. 2. Open https://mozilla.github.io/pdf.js/web/viewer.html. 3. Click on the "Open file" button, and open a new PDF file. ***ER:*** A new PDF file should open in the viewer. ***AR:*** The PDF file fails to open, with an error message of the following format: `Message: Unexpected server response (200) while retrieving PDF "blob:https://mozilla.github.io/a4fc455f-bc05-45b5-b6aa-2ecff3cb45ce".`
73 lines
2.2 KiB
JavaScript
73 lines
2.2 KiB
JavaScript
/* Copyright 2012 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 {
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assert, MissingPDFException, UnexpectedResponseException
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} from '../shared/util';
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function validateRangeRequestCapabilities({ getResponseHeader, isHttp,
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rangeChunkSize, disableRange, }) {
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assert(rangeChunkSize > 0);
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let returnValues = {
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allowRangeRequests: false,
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suggestedLength: undefined,
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};
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if (disableRange || !isHttp) {
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return returnValues;
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}
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if (getResponseHeader('Accept-Ranges') !== 'bytes') {
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return returnValues;
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}
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let contentEncoding = getResponseHeader('Content-Encoding') || 'identity';
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if (contentEncoding !== 'identity') {
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return returnValues;
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}
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let length = parseInt(getResponseHeader('Content-Length'), 10);
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if (!Number.isInteger(length)) {
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return returnValues;
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}
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returnValues.suggestedLength = length;
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if (length <= 2 * rangeChunkSize) {
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// The file size is smaller than the size of two chunks, so it does not
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// make any sense to abort the request and retry with a range request.
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return returnValues;
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}
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returnValues.allowRangeRequests = true;
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return returnValues;
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}
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function createResponseStatusError(status, url) {
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if (status === 404 || status === 0 && /^file:/.test(url)) {
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return new MissingPDFException('Missing PDF "' + url + '".');
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}
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return new UnexpectedResponseException(
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'Unexpected server response (' + status +
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') while retrieving PDF "' + url + '".', status);
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}
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function validateResponseStatus(status) {
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return status === 200 || status === 206;
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}
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export {
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createResponseStatusError,
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validateRangeRequestCapabilities,
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validateResponseStatus,
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};
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