ui/app/static/js/pdf.js

/* Copyright 2012 Mozilla Foundation
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
/* eslint-disable no-unused-vars */

'use strict';

var pdfjsVersion =
  typeof PDFJSDev !== 'undefined' ? PDFJSDev.eval('BUNDLE_VERSION') : void 0;
var pdfjsBuild =
  typeof PDFJSDev !== 'undefined' ? PDFJSDev.eval('BUNDLE_BUILD') : void 0;
var pdfjsSharedUtil = require('./shared/util.js');
var pdfjsDisplayAPI = require('./display/api.js');
var pdfjsDisplayTextLayer = require('./display/text_layer.js');
var pdfjsDisplayAnnotationLayer = require('./display/annotation_layer.js');
var pdfjsDisplayDisplayUtils = require('./display/display_utils.js');
var pdfjsDisplaySVG = require('./display/svg.js');
let pdfjsDisplayWorkerOptions = require('./display/worker_options.js');
let pdfjsDisplayAPICompatibility = require('./display/api_compatibility.js');

if (typeof PDFJSDev === 'undefined' || PDFJSDev.test('GENERIC')) {
  const isNodeJS = require('./shared/is_node.js');
  if (isNodeJS()) {
    let PDFNodeStream = require('./display/node_stream.js').PDFNodeStream;
    pdfjsDisplayAPI.setPDFNetworkStreamFactory((params) => {
      return new PDFNodeStream(params);
    });
  } else {
    let PDFNetworkStream = require('./display/network.js').PDFNetworkStream;
    let PDFFetchStream;
    if (pdfjsDisplayDisplayUtils.isFetchSupported()) {
      PDFFetchStream = require('./display/fetch_stream.js').PDFFetchStream;
    }
    pdfjsDisplayAPI.setPDFNetworkStreamFactory((params) => {
      if (PDFFetchStream &&
          pdfjsDisplayDisplayUtils.isValidFetchUrl(params.url)) {
        return new PDFFetchStream(params);
      }
      return new PDFNetworkStream(params);
    });
  }
} else if (typeof PDFJSDev !== 'undefined' && PDFJSDev.test('CHROME')) {
  let PDFNetworkStream = require('./display/network.js').PDFNetworkStream;
  let PDFFetchStream;
  let isChromeWithFetchCredentials = function() {
    // fetch does not include credentials until Chrome 61.0.3138.0 and later.
    // https://chromium.googlesource.com/chromium/src/+/2e231cf052ca5e68e22baf0008ac9e5e29121707
    try {
      // Indexed properties on window are read-only in Chrome 61.0.3151.0+
      // https://chromium.googlesource.com/chromium/src.git/+/58ab4a971b06dec13e4edf9de8382ca6847f6190
      window[999] = 123; // should throw. Note: JS strict mode MUST be enabled.
      delete window[999];
      return false;
    } catch (e) {
      return true;
    }
  };
  if (pdfjsDisplayDisplayUtils.isFetchSupported() &&
      isChromeWithFetchCredentials()) {
    PDFFetchStream = require('./display/fetch_stream.js').PDFFetchStream;
  }
  pdfjsDisplayAPI.setPDFNetworkStreamFactory((params) => {
    if (PDFFetchStream &&
        pdfjsDisplayDisplayUtils.isValidFetchUrl(params.url)) {
      return new PDFFetchStream(params);
    }
    return new PDFNetworkStream(params);
  });
}

exports.build = pdfjsDisplayAPI.build;
exports.version = pdfjsDisplayAPI.version;
exports.getDocument = pdfjsDisplayAPI.getDocument;
exports.LoopbackPort = pdfjsDisplayAPI.LoopbackPort;
exports.PDFDataRangeTransport = pdfjsDisplayAPI.PDFDataRangeTransport;
exports.PDFWorker = pdfjsDisplayAPI.PDFWorker;
exports.renderTextLayer = pdfjsDisplayTextLayer.renderTextLayer;
exports.AnnotationLayer = pdfjsDisplayAnnotationLayer.AnnotationLayer;
exports.createPromiseCapability = pdfjsSharedUtil.createPromiseCapability;
exports.PasswordResponses = pdfjsSharedUtil.PasswordResponses;
exports.InvalidPDFException = pdfjsSharedUtil.InvalidPDFException;
exports.MissingPDFException = pdfjsSharedUtil.MissingPDFException;
exports.SVGGraphics = pdfjsDisplaySVG.SVGGraphics;
exports.NativeImageDecoding = pdfjsSharedUtil.NativeImageDecoding;
exports.CMapCompressionType = pdfjsSharedUtil.CMapCompressionType;
exports.PermissionFlag = pdfjsSharedUtil.PermissionFlag;
exports.UnexpectedResponseException =
  pdfjsSharedUtil.UnexpectedResponseException;
exports.OPS = pdfjsSharedUtil.OPS;
exports.VerbosityLevel = pdfjsSharedUtil.VerbosityLevel;
exports.UNSUPPORTED_FEATURES = pdfjsSharedUtil.UNSUPPORTED_FEATURES;
exports.createValidAbsoluteUrl = pdfjsSharedUtil.createValidAbsoluteUrl;
exports.createObjectURL = pdfjsSharedUtil.createObjectURL;
exports.removeNullCharacters = pdfjsSharedUtil.removeNullCharacters;
exports.shadow = pdfjsSharedUtil.shadow;
exports.Util = pdfjsSharedUtil.Util;
exports.ReadableStream = pdfjsSharedUtil.ReadableStream;
exports.RenderingCancelledException =
  pdfjsDisplayDisplayUtils.RenderingCancelledException;
exports.getFilenameFromUrl = pdfjsDisplayDisplayUtils.getFilenameFromUrl;
exports.LinkTarget = pdfjsDisplayDisplayUtils.LinkTarget;
exports.addLinkAttributes = pdfjsDisplayDisplayUtils.addLinkAttributes;
exports.loadScript = pdfjsDisplayDisplayUtils.loadScript;
exports.PDFDateString = pdfjsDisplayDisplayUtils.PDFDateString;
exports.GlobalWorkerOptions = pdfjsDisplayWorkerOptions.GlobalWorkerOptions;
exports.apiCompatibilityParams =
  pdfjsDisplayAPICompatibility.apiCompatibilityParams;