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10 |
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11 | 'use strict';
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12 |
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13 | Object.defineProperty(exports, '__esModule', {
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14 | value: true
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15 | });
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16 | var textRange = function textRange(range, i) {
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17 | return range.start(i) + '-' + range.end(i);
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18 | };
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19 |
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20 |
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21 |
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22 |
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23 |
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24 |
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25 |
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26 | var formatHexString = function formatHexString(e, i) {
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27 | var value = e.toString(16);
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28 |
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29 | return '00'.substring(0, 2 - value.length) + value + (i % 2 ? ' ' : '');
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30 | };
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31 | var formatAsciiString = function formatAsciiString(e) {
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32 | if (e >= 0x20 && e < 0x7e) {
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33 | return String.fromCharCode(e);
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34 | }
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35 | return '.';
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36 | };
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37 |
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38 |
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39 |
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40 |
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41 |
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42 |
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43 |
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44 |
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45 |
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46 |
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47 |
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48 | var createTransferableMessage = function createTransferableMessage(message) {
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49 | var transferable = {};
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50 |
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51 | Object.keys(message).forEach(function (key) {
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52 | var value = message[key];
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53 |
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54 | if (ArrayBuffer.isView(value)) {
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55 | transferable[key] = {
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56 | bytes: value.buffer,
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57 | byteOffset: value.byteOffset,
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58 | byteLength: value.byteLength
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59 | };
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60 | } else {
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61 | transferable[key] = value;
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62 | }
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63 | });
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64 |
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65 | return transferable;
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66 | };
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67 |
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68 |
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69 |
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70 |
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71 |
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72 | var initSegmentId = function initSegmentId(initSegment) {
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73 | var byterange = initSegment.byterange || {
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74 | length: Infinity,
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75 | offset: 0
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76 | };
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77 |
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78 | return [byterange.length, byterange.offset, initSegment.resolvedUri].join(',');
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79 | };
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80 |
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81 |
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82 |
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83 |
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84 | var utils = {
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85 | hexDump: function hexDump(data) {
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86 | var bytes = Array.prototype.slice.call(data);
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87 | var step = 16;
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88 | var result = '';
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89 | var hex = undefined;
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90 | var ascii = undefined;
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91 |
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92 | for (var j = 0; j < bytes.length / step; j++) {
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93 | hex = bytes.slice(j * step, j * step + step).map(formatHexString).join('');
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94 | ascii = bytes.slice(j * step, j * step + step).map(formatAsciiString).join('');
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95 | result += hex + ' ' + ascii + '\n';
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96 | }
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97 | return result;
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98 | },
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99 | tagDump: function tagDump(tag) {
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100 | return utils.hexDump(tag.bytes);
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101 | },
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102 | textRanges: function textRanges(ranges) {
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103 | var result = '';
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104 | var i = undefined;
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105 |
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106 | for (i = 0; i < ranges.length; i++) {
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107 | result += textRange(ranges, i) + ' ';
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108 | }
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109 | return result;
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110 | },
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111 | createTransferableMessage: createTransferableMessage,
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112 | initSegmentId: initSegmentId
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113 | };
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114 |
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115 | exports['default'] = utils;
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116 | module.exports = exports['default']; |
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