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How to use PDFNetworkStreamRangeRequestReader method in wpt

Best JavaScript code snippet using wpt

network.js

Source:network.js

...242    }243  }, {244    key: "getRangeReader",245    value: function getRangeReader(begin, end) {246      var reader = new PDFNetworkStreamRangeRequestReader(this._manager, begin, end);247      reader.onClosed = this._onRangeRequestReaderClosed.bind(this);248      this._rangeRequestReaders.push(reader);249      return reader;250    }251  }, {252    key: "cancelAllRequests",253    value: function cancelAllRequests(reason) {254      if (this._fullRequestReader) {255        this._fullRequestReader.cancel(reason);256      }257      var readers = this._rangeRequestReaders.slice(0);258      readers.forEach(function (reader) {259        reader.cancel(reason);260      });261    }262  }]);263  return PDFNetworkStream;264}();265exports.PDFNetworkStream = PDFNetworkStream;266var PDFNetworkStreamFullRequestReader =267/*#__PURE__*/268function () {269  function PDFNetworkStreamFullRequestReader(manager, source) {270    _classCallCheck(this, PDFNetworkStreamFullRequestReader);271    this._manager = manager;272    var args = {273      onHeadersReceived: this._onHeadersReceived.bind(this),274      onDone: this._onDone.bind(this),275      onError: this._onError.bind(this),276      onProgress: this._onProgress.bind(this)277    };278    this._url = source.url;279    this._fullRequestId = manager.requestFull(args);280    this._headersReceivedCapability = (0, _util.createPromiseCapability)();281    this._disableRange = source.disableRange || false;282    this._contentLength = source.length;283    this._rangeChunkSize = source.rangeChunkSize;284    if (!this._rangeChunkSize && !this._disableRange) {285      this._disableRange = true;286    }287    this._isStreamingSupported = false;288    this._isRangeSupported = false;289    this._cachedChunks = [];290    this._requests = [];291    this._done = false;292    this._storedError = undefined;293    this._filename = null;294    this.onProgress = null;295  }296  _createClass(PDFNetworkStreamFullRequestReader, [{297    key: "_onHeadersReceived",298    value: function _onHeadersReceived() {299      var fullRequestXhrId = this._fullRequestId;300      var fullRequestXhr = this._manager.getRequestXhr(fullRequestXhrId);301      var getResponseHeader = function getResponseHeader(name) {302        return fullRequestXhr.getResponseHeader(name);303      };304      var _validateRangeRequest = (0, _network_utils.validateRangeRequestCapabilities)({305        getResponseHeader: getResponseHeader,306        isHttp: this._manager.isHttp,307        rangeChunkSize: this._rangeChunkSize,308        disableRange: this._disableRange309      }),310          allowRangeRequests = _validateRangeRequest.allowRangeRequests,311          suggestedLength = _validateRangeRequest.suggestedLength;312      if (allowRangeRequests) {313        this._isRangeSupported = true;314      }315      this._contentLength = suggestedLength || this._contentLength;316      this._filename = (0, _network_utils.extractFilenameFromHeader)(getResponseHeader);317      if (this._isRangeSupported) {318        this._manager.abortRequest(fullRequestXhrId);319      }320      this._headersReceivedCapability.resolve();321    }322  }, {323    key: "_onDone",324    value: function _onDone(args) {325      if (args) {326        if (this._requests.length > 0) {327          var requestCapability = this._requests.shift();328          requestCapability.resolve({329            value: args.chunk,330            done: false331          });332        } else {333          this._cachedChunks.push(args.chunk);334        }335      }336      this._done = true;337      if (this._cachedChunks.length > 0) {338        return;339      }340      this._requests.forEach(function (requestCapability) {341        requestCapability.resolve({342          value: undefined,343          done: true344        });345      });346      this._requests = [];347    }348  }, {349    key: "_onError",350    value: function _onError(status) {351      var url = this._url;352      var exception = (0, _network_utils.createResponseStatusError)(status, url);353      this._storedError = exception;354      this._headersReceivedCapability.reject(exception);355      this._requests.forEach(function (requestCapability) {356        requestCapability.reject(exception);357      });358      this._requests = [];359      this._cachedChunks = [];360    }361  }, {362    key: "_onProgress",363    value: function _onProgress(data) {364      if (this.onProgress) {365        this.onProgress({366          loaded: data.loaded,367          total: data.lengthComputable ? data.total : this._contentLength368        });369      }370    }371  }, {372    key: "read",373    value: function () {374      var _read = _asyncToGenerator(375      /*#__PURE__*/376      _regenerator["default"].mark(function _callee() {377        var chunk, requestCapability;378        return _regenerator["default"].wrap(function _callee$(_context) {379          while (1) {380            switch (_context.prev = _context.next) {381              case 0:382                if (!this._storedError) {383                  _context.next = 2;384                  break;385                }386                throw this._storedError;387              case 2:388                if (!(this._cachedChunks.length > 0)) {389                  _context.next = 5;390                  break;391                }392                chunk = this._cachedChunks.shift();393                return _context.abrupt("return", {394                  value: chunk,395                  done: false396                });397              case 5:398                if (!this._done) {399                  _context.next = 7;400                  break;401                }402                return _context.abrupt("return", {403                  value: undefined,404                  done: true405                });406              case 7:407                requestCapability = (0, _util.createPromiseCapability)();408                this._requests.push(requestCapability);409                return _context.abrupt("return", requestCapability.promise);410              case 10:411              case "end":412                return _context.stop();413            }414          }415        }, _callee, this);416      }));417      function read() {418        return _read.apply(this, arguments);419      }420      return read;421    }()422  }, {423    key: "cancel",424    value: function cancel(reason) {425      this._done = true;426      this._headersReceivedCapability.reject(reason);427      this._requests.forEach(function (requestCapability) {428        requestCapability.resolve({429          value: undefined,430          done: true431        });432      });433      this._requests = [];434      if (this._manager.isPendingRequest(this._fullRequestId)) {435        this._manager.abortRequest(this._fullRequestId);436      }437      this._fullRequestReader = null;438    }439  }, {440    key: "filename",441    get: function get() {442      return this._filename;443    }444  }, {445    key: "isRangeSupported",446    get: function get() {447      return this._isRangeSupported;448    }449  }, {450    key: "isStreamingSupported",451    get: function get() {452      return this._isStreamingSupported;453    }454  }, {455    key: "contentLength",456    get: function get() {457      return this._contentLength;458    }459  }, {460    key: "headersReady",461    get: function get() {462      return this._headersReceivedCapability.promise;463    }464  }]);465  return PDFNetworkStreamFullRequestReader;466}();467var PDFNetworkStreamRangeRequestReader =468/*#__PURE__*/469function () {470  function PDFNetworkStreamRangeRequestReader(manager, begin, end) {471    _classCallCheck(this, PDFNetworkStreamRangeRequestReader);472    this._manager = manager;473    var args = {474      onDone: this._onDone.bind(this),475      onProgress: this._onProgress.bind(this)476    };477    this._requestId = manager.requestRange(begin, end, args);478    this._requests = [];479    this._queuedChunk = null;480    this._done = false;481    this.onProgress = null;482    this.onClosed = null;483  }484  _createClass(PDFNetworkStreamRangeRequestReader, [{...

network.d.ts

Source:network.d.ts

1/** @implements {IPDFStream} */2export class PDFNetworkStream implements IPDFStream {3    constructor(source: any);4    _source: any;5    _manager: NetworkManager;6    _rangeChunkSize: any;7    _fullRequestReader: PDFNetworkStreamFullRequestReader | null;8    _rangeRequestReaders: any[];9    _onRangeRequestReaderClosed(reader: any): void;10    getFullReader(): PDFNetworkStreamFullRequestReader;11    getRangeReader(begin: any, end: any): PDFNetworkStreamRangeRequestReader;12    cancelAllRequests(reason: any): void;13}14declare class NetworkManager {15    constructor(url: any, args?: {});16    url: any;17    isHttp: boolean;18    httpHeaders: any;19    withCredentials: any;20    getXhr: any;21    currXhrId: number;22    pendingRequests: any;23    requestRange(begin: any, end: any, listeners: any): number;24    requestFull(listeners: any): number;25    request(args: any): number;26    onProgress(xhrId: any, evt: any): void;27    onStateChange(xhrId: any, evt: any): void;28    getRequestXhr(xhrId: any): any;29    isPendingRequest(xhrId: any): boolean;30    abortRequest(xhrId: any): void;31}32/** @implements {IPDFStreamReader} */33declare class PDFNetworkStreamFullRequestReader implements IPDFStreamReader {34    constructor(manager: any, source: any);35    _manager: any;36    _url: any;37    _fullRequestId: any;38    _headersReceivedCapability: import("../shared/util.d.ts").PromiseCapability;39    _disableRange: any;40    _contentLength: any;41    _rangeChunkSize: any;42    _isStreamingSupported: boolean;43    _isRangeSupported: boolean;44    _cachedChunks: any[];45    _requests: any[];46    _done: boolean;47    _storedError: import("../shared/util.d.ts").MissingPDFException | import("../shared/util.d.ts").UnexpectedResponseException | undefined;48    _filename: string | null;49    onProgress: any;50    _onHeadersReceived(): void;51    _onDone(data: any): void;52    _onError(status: any): void;53    _onProgress(evt: any): void;54    get filename(): string | null;55    get isRangeSupported(): boolean;56    get isStreamingSupported(): boolean;57    get contentLength(): any;58    get headersReady(): Promise<any>;59    read(): Promise<any>;60    cancel(reason: any): void;61    _fullRequestReader: any;62}63/** @implements {IPDFStreamRangeReader} */64declare class PDFNetworkStreamRangeRequestReader implements IPDFStreamRangeReader {65    constructor(manager: any, begin: any, end: any);66    _manager: any;67    _url: any;68    _requestId: any;69    _requests: any[];70    _queuedChunk: any;71    _done: boolean;72    _storedError: import("../shared/util.d.ts").MissingPDFException | import("../shared/util.d.ts").UnexpectedResponseException | undefined;73    onProgress: any;74    onClosed: any;75    _close(): void;76    _onDone(data: any): void;77    _onError(status: any): void;78    _onProgress(evt: any): void;79    get isStreamingSupported(): boolean;80    read(): Promise<any>;81    cancel(reason: any): void;82}...

Using AI Code Generation

1var pdfjsLib = window['pdfjs-dist/build/pdf'];2pdfjsLib.GlobalWorkerOptions.workerSrc = 'pdf.worker.js';3var fileInput = document.getElementById('fileInput');4fileInput.addEventListener('change', function (e) {5  var file = fileInput.files[0];6  var fileReader = new FileReader();7  fileReader.onload = function () {8    var typedarray = new Uint8Array(this.result);9    loadPdf(typedarray);10  };11  fileReader.readAsArrayBuffer(file);12});13var xhr = new XMLHttpRequest();14xhr.open('GET', url);15xhr.responseType = 'arraybuffer';16xhr.onload = function (e) {17  var typedarray = new Uint8Array(xhr.response);18  loadPdf(typedarray);19};20xhr.send();21function loadPdf(typedarray) {22  pdfjsLib.getDocument({23  }).promise.then(function (pdf) {24    var pageNumber = 1;25    pdf.getPage(pageNumber).then(function (page) {26      var scale = 1.5;27      var viewport = page.getViewport({ scale: scale, });28      var canvas = document.getElementById('the-canvas');29      var context = canvas.getContext('2d');30      canvas.height = viewport.height;31      canvas.width = viewport.width;32      var renderContext = {33      };34      page.render(renderContext);35    });36  }, function (reason) {37    console.error(reason);38  });39}

Using AI Code Generation

1var wptextextractor = require("./wptextextractor.js");2var fs = require("fs");3var PDFNetworkStreamRangeRequestReader = wptextextractor.PDFNetworkStreamRangeRequestReader;4var PDFWorker = wptextextractor.PDFWorker;5var PDFDocumentProxy = wptextextractor.PDFDocumentProxy;6var PDFJS = wptextextractor.PDFJS;7var pdfStream = fs.createWriteStream("test.pdf");8var pdfNetworkStream = new PDFNetworkStreamRangeRequestReader({9});10var pdfWorker = new PDFWorker();11pdfWorker.promise.then(function () {12    var loadingTask = PDFJS.getDocument({13    });14    loadingTask.promise.then(function (pdfDocument) {15        var numPages = pdfDocument.numPages;16        lastPromise = pdfDocument.getPage(1).then(function (page) {17            var viewport = page.getViewport(1.0);18            var textContent = page.getTextContent();19            textContent.then(function (text) {20                console.log(text);21            });22        });23        lastPromise.then(function () {24            pdfWorker.destroy();25        });26    });27});28{ error: 'PDFNetworkStreamRangeRequestReader.getRangeReader: Unsupported ' +29var wptextextractor = require("./wptextextractor.js");30var fs = require("fs");31var PDFNetworkStreamRangeRequestReader = wptextextractor.PDFNetworkStreamRangeRequestReader;

Using AI Code Generation

1import { PDFNetworkStreamRangeRequestReader } from '/wpt/pdfjs/pdf-network-stream-range-request-reader.js';2const pdfNetworkStream = new PDFNetworkStreamRangeRequestReader({3});4pdfNetworkStream.getFullReader().read().then(function({ value, done, }) {5    if (done || !value) {6        return;7    }8    console.log('PDF data length:', value.byteLength);9});10pdfNetworkStream.getRangeReader(0, 1000).read().then(function({ value, done, }) {11    if (done || !value) {12        return;13    }14    console.log('PDF data length:', value.byteLength);15});16pdfNetworkStream.getRangeReader(0, 1000).read().then(function({ value, done, }) {17    if (done || !value) {18        return;19    }20    console.log('PDF data length:', value.byteLength);21});22pdfNetworkStream.getRangeReader(0, 1000).read().then(function({ value, done, }) {23    if (done || !value) {24        return;25    }26    console.log('PDF data length:', value.byteLength);27});28pdfNetworkStream.getRangeReader(0, 1000).read().then(function({ value, done, }) {29    if (done || !value) {30        return;31    }32    console.log('PDF data length:', value.byteLength);33});34pdfNetworkStream.getRangeReader(0, 1000).read().then(function({ value, done, }) {35    if (done || !value) {36        return;37    }38    console.log('PDF data length:', value.byteLength);39});

Using AI Code Generation

1In the above code, we have imported the PDFNetworkStreamRangeRequestReader and PDFNetworkStreamFullRequestReader methods of wpt. The code for the same is as follows:2const { PDFNetworkStreamRangeRequestReader } = require('pdfjs-dist/lib/network');3const { PDFNetworkStreamFullRequestReader } = require('pdfjs-dist/lib/network');4function testRangeRequestReader(){5}6function testRangeRequestReader(){7}8function testFullRequestReader(){9}10function testRangeRequestReader(){11    const rangeReader = new PDFNetworkStreamRangeRequestReader({ url, });12    const pdf = await PDFDocument.load(rangeReader);13}

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