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annotate Platforms/Wasm/WasmWebService.js @ 781:2bb72826fa3f

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IVolumeImage
author Sebastien Jodogne <s.jodogne@gmail.com>
date Mon, 27 May 2019 11:45:18 +0200
parents 1b9973905e15
children 861c080ef47b
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1 mergeInto(LibraryManager.library, {
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2 WasmWebService_GetAsync: function(callableSuccess, callableFailure, url, headersInJsonString, payload, timeoutInSeconds) {
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3 // Directly use XMLHttpRequest (no jQuery) to retrieve the raw binary data
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4 // http://www.henryalgus.com/reading-binary-files-using-jquery-ajax/
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5 var xhr = new XMLHttpRequest();
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6 var url_ = UTF8ToString(url);
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7 var headersInJsonString_ = UTF8ToString(headersInJsonString);
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8
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9 xhr.open('GET', url_, true);
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10 xhr.responseType = 'arraybuffer';
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11 xhr.timeout = timeoutInSeconds * 1000;
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12 var headers = JSON.parse(headersInJsonString_);
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13 for (var key in headers) {
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14 xhr.setRequestHeader(key, headers[key]);
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15 }
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16 //console.log(xhr);
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17 xhr.onreadystatechange = function() {
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18 if (this.readyState == XMLHttpRequest.DONE) {
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19 if (xhr.status === 200) {
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20 var s = xhr.getAllResponseHeaders();
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21 var headers = _malloc(s.length + 1);
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22 stringToUTF8(s, headers, s.length + 1);
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23
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24 // TODO - Is "new Uint8Array()" necessary? This copies the
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25 // answer to the WebAssembly stack, hence necessitating
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26 // increasing the TOTAL_STACK parameter of Emscripten
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27 window.WasmWebService_NotifySuccess(callableSuccess, url_, new Uint8Array(this.response),
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28 this.response.byteLength, headers, payload);
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29 } else {
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30 window.WasmWebService_NotifyError(callableFailure, url_, payload);
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31 }
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32 }
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33 }
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34
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35 xhr.send();
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36 },
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37
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38 WasmWebService_ScheduleLaterCachedSuccessNotification: function (brol) {
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39 setTimeout(function() {
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40 window.WasmWebService_NotifyCachedSuccess(brol);
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41 }, 0);
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42 },
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43
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44 WasmWebService_PostAsync: function(callableSuccess, callableFailure, url, headersInJsonString, body, bodySize, payload, timeoutInSeconds) {
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45 var xhr = new XMLHttpRequest();
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46 var url_ = UTF8ToString(url);
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47 var headersInJsonString_ = UTF8ToString(headersInJsonString);
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48 xhr.open('POST', url_, true);
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49 xhr.timeout = timeoutInSeconds * 1000;
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50 xhr.responseType = 'arraybuffer';
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51 xhr.setRequestHeader('Content-type', 'application/octet-stream');
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52
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53 var headers = JSON.parse(headersInJsonString_);
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54 for (var key in headers) {
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55 xhr.setRequestHeader(key, headers[key]);
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56 }
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58 xhr.onreadystatechange = function() {
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59 if (this.readyState == XMLHttpRequest.DONE) {
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60 if (xhr.status === 200) {
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61 var s = xhr.getAllResponseHeaders();
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62 var headers = _malloc(s.length + 1);
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63 stringToUTF8(s, headers, s.length + 1);
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64
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65 window.WasmWebService_NotifySuccess(callableSuccess, url_, new Uint8Array(this.response),
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66 this.response.byteLength, headers, payload);
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67 } else {
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68 window.WasmWebService_NotifyError(callableFailure, url_, payload);
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69 }
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70 }
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71 }
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72
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73 xhr.send(new Uint8ClampedArray(HEAPU8.buffer, body, bodySize));
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74 },
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76 WasmWebService_DeleteAsync: function(callableSuccess, callableFailure, url, headersInJsonString, payload, timeoutInSeconds) {
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77 var xhr = new XMLHttpRequest();
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78 var url_ = UTF8ToString(url);
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79 var headersInJsonString_ = UTF8ToString(headersInJsonString);
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80 xhr.open('DELETE', url_, true);
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81 xhr.timeout = timeoutInSeconds * 1000;
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82 xhr.responseType = 'arraybuffer';
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83 xhr.setRequestHeader('Content-type', 'application/octet-stream');
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84
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85 var headers = JSON.parse(headersInJsonString_);
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86 for (var key in headers) {
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87 xhr.setRequestHeader(key, headers[key]);
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88 }
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89
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90 xhr.onreadystatechange = function() {
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91 if (this.readyState == XMLHttpRequest.DONE) {
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92 if (xhr.status === 200) {
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93 var s = xhr.getAllResponseHeaders();
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94 var headers = _malloc(s.length + 1);
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95 stringToUTF8(s, headers, s.length + 1);
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97 window.WasmWebService_NotifySuccess(callableSuccess, url_, new Uint8Array(this.response),
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98 this.response.byteLength, headers, payload);
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99 } else {
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100 window.WasmWebService_NotifyError(callableFailure, url_, payload);
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101 }
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102 }
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103 }
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104
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105 xhr.send();
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106 }
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108 });