Brunobkr/llama.cpp_AlgMor24_github

1/*2  Copyright 2018 Google LLC3 4  Use of this source code is governed by an MIT-style5  license that can be found in the LICENSE file or at6  https://opensource.org/licenses/MIT.7*/8 9import {WorkboxError} from 'workbox-core/_private/WorkboxError.js';10import {assert} from 'workbox-core/_private/assert.js';11import {logger} from 'workbox-core/_private/logger.js';12import {calculateEffectiveBoundaries} from './utils/calculateEffectiveBoundaries.js';13import {parseRangeHeader} from './utils/parseRangeHeader.js';14import './_version.js';15 16/**17 * Given a `Request` and `Response` objects as input, this will return a18 * promise for a new `Response`.19 *20 * If the original `Response` already contains partial content (i.e. it has21 * a status of 206), then this assumes it already fulfills the `Range:`22 * requirements, and will return it as-is.23 *24 * @param {Request} request A request, which should contain a Range:25 * header.26 * @param {Response} originalResponse A response.27 * @return {Promise<Response>} Either a `206 Partial Content` response, with28 * the response body set to the slice of content specified by the request's29 * `Range:` header, or a `416 Range Not Satisfiable` response if the30 * conditions of the `Range:` header can't be met.31 *32 * @memberof workbox-range-requests33 */34async function createPartialResponse(35  request: Request,36  originalResponse: Response,37): Promise<Response> {38  try {39    if (process.env.NODE_ENV !== 'production') {40      assert!.isInstance(request, Request, {41        moduleName: 'workbox-range-requests',42        funcName: 'createPartialResponse',43        paramName: 'request',44      });45 46      assert!.isInstance(originalResponse, Response, {47        moduleName: 'workbox-range-requests',48        funcName: 'createPartialResponse',49        paramName: 'originalResponse',50      });51    }52 53    if (originalResponse.status === 206) {54      // If we already have a 206, then just pass it through as-is;55      // see https://github.com/GoogleChrome/workbox/issues/172056      return originalResponse;57    }58 59    const rangeHeader = request.headers.get('range');60    if (!rangeHeader) {61      throw new WorkboxError('no-range-header');62    }63 64    const boundaries = parseRangeHeader(rangeHeader);65    const originalBlob = await originalResponse.blob();66 67    const effectiveBoundaries = calculateEffectiveBoundaries(68      originalBlob,69      boundaries.start,70      boundaries.end,71    );72 73    const slicedBlob = originalBlob.slice(74      effectiveBoundaries.start,75      effectiveBoundaries.end,76    );77    const slicedBlobSize = slicedBlob.size;78 79    const slicedResponse = new Response(slicedBlob, {80      // Status code 206 is for a Partial Content response.81      // See https://developer.mozilla.org/en-US/docs/Web/HTTP/Status/20682      status: 206,83      statusText: 'Partial Content',84      headers: originalResponse.headers,85    });86 87    slicedResponse.headers.set('Content-Length', String(slicedBlobSize));88    slicedResponse.headers.set(89      'Content-Range',90      `bytes ${effectiveBoundaries.start}-${effectiveBoundaries.end - 1}/` +91        `${originalBlob.size}`,92    );93 94    return slicedResponse;95  } catch (error) {96    if (process.env.NODE_ENV !== 'production') {97      logger.warn(98        `Unable to construct a partial response; returning a ` +99          `416 Range Not Satisfiable response instead.`,100      );101      logger.groupCollapsed(`View details here.`);102      logger.log(error);103      logger.log(request);104      logger.log(originalResponse);105      logger.groupEnd();106    }107 108    return new Response('', {109      status: 416,110      statusText: 'Range Not Satisfiable',111    });112  }113}114 115export {createPartialResponse};116