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How to use ndef method in wpt

Best JavaScript code snippet using wpt

phonegap-nfc.js

Source:phonegap-nfc.js

1cordova.define("phonegap-nfc.NFC", function(require, exports, module) {2/*jshint  bitwise: false, camelcase: false, quotmark: false, unused: vars */3/*global cordova, console */4"use strict";5function handleNfcFromIntentFilter() {6    // This was historically done in cordova.addConstructor but broke with PhoneGap-2.2.0.7    // We need to handle NFC from an Intent that launched the application, but *after*8    // the code in the application's deviceready has run.  After upgrading to 2.2.0,9    // addConstructor was finishing *before* deviceReady was complete and the10    // ndef listeners had not been registered.11    // It seems like there should be a better solution.12    if (cordova.platformId === "android" || cordova.platformId === "windows") {13        setTimeout(14            function () {15                cordova.exec(16                    function () {17                        console.log("Initialized the NfcPlugin");18                    },19                    function (reason) {20                        console.log("Failed to initialize the NfcPlugin " + reason);21                    },22                    "NfcPlugin", "init", []23                );24            }, 1025        );26    }27}28document.addEventListener('deviceready', handleNfcFromIntentFilter, false);29var ndef = {30    // see android.nfc.NdefRecord for documentation about constants31    // http://developer.android.com/reference/android/nfc/NdefRecord.html32    TNF_EMPTY: 0x0,33    TNF_WELL_KNOWN: 0x01,34    TNF_MIME_MEDIA: 0x02,35    TNF_ABSOLUTE_URI: 0x03,36    TNF_EXTERNAL_TYPE: 0x04,37    TNF_UNKNOWN: 0x05,38    TNF_UNCHANGED: 0x06,39    TNF_RESERVED: 0x07,40    RTD_TEXT: [0x54], // "T"41    RTD_URI: [0x55], // "U"42    RTD_SMART_POSTER: [0x53, 0x70], // "Sp"43    RTD_ALTERNATIVE_CARRIER: [0x61, 0x63], // "ac"44    RTD_HANDOVER_CARRIER: [0x48, 0x63], // "Hc"45    RTD_HANDOVER_REQUEST: [0x48, 0x72], // "Hr"46    RTD_HANDOVER_SELECT: [0x48, 0x73], // "Hs"47    /**48     * Creates a JSON representation of a NDEF Record.49     *50     * @tnf 3-bit TNF (Type Name Format) - use one of the TNF_* constants51     * @type byte array, containing zero to 255 bytes, must not be null52     * @id byte array, containing zero to 255 bytes, must not be null53     * @payload byte array, containing zero to (2 ** 32 - 1) bytes, must not be null54     *55     * @returns JSON representation of a NDEF record56     *57     * @see Ndef.textRecord, Ndef.uriRecord and Ndef.mimeMediaRecord for examples58     */59    record: function (tnf, type, id, payload) {60        // handle null values61        if (!tnf) { tnf = ndef.TNF_EMPTY; }62        if (!type) { type = []; }63        if (!id) { id = []; }64        if (!payload) { payload = []; }65        // convert strings to arrays66        if (!(type instanceof Array)) {67            type = nfc.stringToBytes(type);68        }69        if (!(id instanceof Array)) {70            id = nfc.stringToBytes(id);71        }72        if (!(payload instanceof Array)) {73            payload = nfc.stringToBytes(payload);74        }75        return {76            tnf: tnf,77            type: type,78            id: id,79            payload: payload80        };81    },82    /**83     * Helper that creates an NDEF record containing plain text.84     *85     * @text String of text to encode86     * @languageCode ISO/IANA language code. Examples: âfiâ, âen-USâ, âfr- CAâ, âjpâ. (optional)87     * @id byte[] (optional)88     */89    textRecord: function (text, languageCode, id) {90        var payload = textHelper.encodePayload(text, languageCode);91        if (!id) { id = []; }92        return ndef.record(ndef.TNF_WELL_KNOWN, ndef.RTD_TEXT, id, payload);93    },94    /**95     * Helper that creates a NDEF record containing a URI.96     *97     * @uri String98     * @id byte[] (optional)99     */100    uriRecord: function (uri, id) {101        var payload = uriHelper.encodePayload(uri);102        if (!id) { id = []; }103        return ndef.record(ndef.TNF_WELL_KNOWN, ndef.RTD_URI, id, payload);104    },105    /**106     * Helper that creates a NDEF record containing an absolute URI.107     *108     * An Absolute URI record means the URI describes the payload of the record.109     *110     * For example a SOAP message could use "http://schemas.xmlsoap.org/soap/envelope/"111     * as the type and XML content for the payload.112     *113     * Absolute URI can also be used to write LaunchApp records for Windows.114     *115     * See 2.4.2 Payload Type of the NDEF Specification116     * http://www.nfc-forum.org/specs/spec_list#ndefts117     *118     * Note that by default, Android will open the URI defined in the type119     * field of an Absolute URI record (TNF=3) and ignore the payload.120     * BlackBerry and Windows do not open the browser for TNF=3.121     *122     * To write a URI as the payload use ndef.uriRecord(uri)123     *124     * @uri String125     * @payload byte[] or String126     * @id byte[] (optional)127     */128    absoluteUriRecord: function (uri, payload, id) {129        if (!id) { id = []; }130        if (!payload) { payload = []; }131        return ndef.record(ndef.TNF_ABSOLUTE_URI, uri, id, payload);132    },133    /**134     * Helper that creates a NDEF record containing an mimeMediaRecord.135     *136     * @mimeType String137     * @payload byte[]138     * @id byte[] (optional)139     */140    mimeMediaRecord: function (mimeType, payload, id) {141        if (!id) { id = []; }142        return ndef.record(ndef.TNF_MIME_MEDIA, nfc.stringToBytes(mimeType), id, payload);143    },144    /**145     * Helper that creates an NDEF record containing an Smart Poster.146     *147     * @ndefRecords array of NDEF Records148     * @id byte[] (optional)149     */150    smartPoster: function (ndefRecords, id) {151        var payload = [];152        if (!id) { id = []; }153        if (ndefRecords)154        {155            // make sure we have an array of something like NDEF records before encoding156            if (ndefRecords[0] instanceof Object && ndefRecords[0].hasOwnProperty('tnf')) {157                payload = ndef.encodeMessage(ndefRecords);158            } else {159                // assume the caller has already encoded the NDEF records into a byte array160                payload = ndefRecords;161            }162        } else {163            console.log("WARNING: Expecting an array of NDEF records");164        }165        return ndef.record(ndef.TNF_WELL_KNOWN, ndef.RTD_SMART_POSTER, id, payload);166    },167    /**168     * Helper that creates an empty NDEF record.169     *170     */171    emptyRecord: function() {172        return ndef.record(ndef.TNF_EMPTY, [], [], []);173    },174    /**175     * Helper that creates an Android Application Record (AAR).176     * http://developer.android.com/guide/topics/connectivity/nfc/nfc.html#aar177     *178     */179    androidApplicationRecord: function(packageName) {180        return ndef.record(ndef.TNF_EXTERNAL_TYPE, "android.com:pkg", [], packageName);181    },182    /**183     * Encodes an NDEF Message into bytes that can be written to a NFC tag.184     *185     * @ndefRecords an Array of NDEF Records186     *187     * @returns byte array188     *189     * @see NFC Data Exchange Format (NDEF) http://www.nfc-forum.org/specs/spec_list/190     */191    encodeMessage: function (ndefRecords) {192        var encoded = [],193            tnf_byte,194            type_length,195            payload_length,196            id_length,197            i,198            mb, me, // messageBegin, messageEnd199            cf = false, // chunkFlag TODO implement200            sr, // boolean shortRecord201            il; // boolean idLengthFieldIsPresent202        for(i = 0; i < ndefRecords.length; i++) {203            mb = (i === 0);204            me = (i === (ndefRecords.length - 1));205            sr = (ndefRecords[i].payload.length < 0xFF);206            il = (ndefRecords[i].id.length > 0);207            tnf_byte = ndef.encodeTnf(mb, me, cf, sr, il, ndefRecords[i].tnf);208            encoded.push(tnf_byte);209            type_length = ndefRecords[i].type.length;210            encoded.push(type_length);211            if (sr) {212                payload_length = ndefRecords[i].payload.length;213                encoded.push(payload_length);214            } else {215                payload_length = ndefRecords[i].payload.length;216                // 4 bytes217                encoded.push((payload_length >> 24));218                encoded.push((payload_length >> 16));219                encoded.push((payload_length >> 8));220                encoded.push((payload_length & 0xFF));221            }222            if (il) {223                id_length = ndefRecords[i].id.length;224                encoded.push(id_length);225            }226            encoded = encoded.concat(ndefRecords[i].type);227            if (il) {228                encoded = encoded.concat(ndefRecords[i].id);229            }230            encoded = encoded.concat(ndefRecords[i].payload);231        }232        return encoded;233    },234    /**235     * Decodes an array bytes into an NDEF Message236     *237     * @bytes an array bytes read from a NFC tag238     *239     * @returns array of NDEF Records240     *241     * @see NFC Data Exchange Format (NDEF) http://www.nfc-forum.org/specs/spec_list/242     */243    decodeMessage: function (bytes) {244        var bytes = bytes.slice(0), // clone since parsing is destructive245            ndef_message = [],246            tnf_byte,247            header,248            type_length = 0,249            payload_length = 0,250            id_length = 0,251            record_type = [],252            id = [],253            payload = [];254        while(bytes.length) {255            tnf_byte = bytes.shift();256            header = ndef.decodeTnf(tnf_byte);257            type_length = bytes.shift();258            if (header.sr) {259                payload_length = bytes.shift();260            } else {261                // next 4 bytes are length262                payload_length = ((0xFF & bytes.shift()) << 24) |263                    ((0xFF & bytes.shift()) << 26) |264                    ((0xFF & bytes.shift()) << 8) |265                    (0xFF & bytes.shift());266            }267            if (header.il) {268                id_length = bytes.shift();269            }270            record_type = bytes.splice(0, type_length);271            id = bytes.splice(0, id_length);272            payload = bytes.splice(0, payload_length);273            ndef_message.push(274                ndef.record(header.tnf, record_type, id, payload)275            );276            if (header.me) { break; } // last message277        }278        return ndef_message;279    },280    /**281     * Decode the bit flags from a TNF Byte.282     *283     * @returns object with decoded data284     *285     *  See NFC Data Exchange Format (NDEF) Specification Section 3.2 RecordLayout286     */287    decodeTnf: function (tnf_byte) {288        return {289            mb: (tnf_byte & 0x80) !== 0,290            me: (tnf_byte & 0x40) !== 0,291            cf: (tnf_byte & 0x20) !== 0,292            sr: (tnf_byte & 0x10) !== 0,293            il: (tnf_byte & 0x8) !== 0,294            tnf: (tnf_byte & 0x7)295        };296    },297    /**298     * Encode NDEF bit flags into a TNF Byte.299     *300     * @returns tnf byte301     *302     *  See NFC Data Exchange Format (NDEF) Specification Section 3.2 RecordLayout303     */304    encodeTnf: function (mb, me, cf, sr, il, tnf) {305        var value = tnf;306        if (mb) {307            value = value | 0x80;308        }309        if (me) {310            value = value | 0x40;311        }312        // note if cf: me, mb, li must be false and tnf must be 0x6313        if (cf) {314            value = value | 0x20;315        }316        if (sr) {317            value = value | 0x10;318        }319        if (il) {320            value = value | 0x8;321        }322        return value;323    },324    /**325     * Convert TNF to String for user friendly display326     *327     */328    tnfToString: function (tnf) {329        var value = tnf;330        switch (tnf) {331            case ndef.TNF_EMPTY:332                value = "Empty";333                break;334            case ndef.TNF_WELL_KNOWN:335                value = "Well Known";336                break;337            case ndef.TNF_MIME_MEDIA:338                value = "Mime Media";339                break;340            case ndef.TNF_ABSOLUTE_URI:341                value = "Absolute URI";342                break;343            case ndef.TNF_EXTERNAL_TYPE:344                value = "External";345                break;346            case ndef.TNF_UNKNOWN:347                value = "Unknown";348                break;349            case ndef.TNF_UNCHANGED:350                value = "Unchanged";351                break;352            case ndef.TNF_RESERVED:353                value = "Reserved";354                break;355        }356        return value;357    }358};359// nfc provides javascript wrappers to the native phonegap implementation360var nfc = {361    addTagDiscoveredListener: function (callback, win, fail) {362        document.addEventListener("tag", callback, false);363        cordova.exec(win, fail, "NfcPlugin", "registerTag", []);364    },365    addMimeTypeListener: function (mimeType, callback, win, fail) {366        document.addEventListener("ndef-mime", callback, false);367        cordova.exec(win, fail, "NfcPlugin", "registerMimeType", [mimeType]);368    },369    addNdefListener: function (callback, win, fail) {370        document.addEventListener("ndef", callback, false);371        cordova.exec(win, fail, "NfcPlugin", "registerNdef", []);372    },373    addNdefFormatableListener: function (callback, win, fail) {374        document.addEventListener("ndef-formatable", callback, false);375        cordova.exec(win, fail, "NfcPlugin", "registerNdefFormatable", []);376    },377    write: function (ndefMessage, win, fail) {378        cordova.exec(win, fail, "NfcPlugin", "writeTag", [ndefMessage]);379    },380    makeReadOnly: function (win, fail) {381        cordova.exec(win, fail, "NfcPlugin", "makeReadOnly", []);382    },383    share: function (ndefMessage, win, fail) {384        cordova.exec(win, fail, "NfcPlugin", "shareTag", [ndefMessage]);385    },386    unshare: function (win, fail) {387        cordova.exec(win, fail, "NfcPlugin", "unshareTag", []);388    },389    handover: function (uris, win, fail) {390        // if we get a single URI, wrap it in an array391        if (!Array.isArray(uris)) {392            uris = [ uris ];393        }394        cordova.exec(win, fail, "NfcPlugin", "handover", uris);395    },396    stopHandover: function (win, fail) {397        cordova.exec(win, fail, "NfcPlugin", "stopHandover", []);398    },399    erase: function (win, fail) {400        cordova.exec(win, fail, "NfcPlugin", "eraseTag", [[]]);401    },402    enabled: function (win, fail) {403        cordova.exec(win, fail, "NfcPlugin", "enabled", [[]]);404    },405    removeTagDiscoveredListener: function (callback, win, fail) {406        document.removeEventListener("tag", callback, false);407        cordova.exec(win, fail, "NfcPlugin", "removeTag", []);408    },409    removeMimeTypeListener: function(mimeType, callback, win, fail) {410        document.removeEventListener("ndef-mime", callback, false);411        cordova.exec(win, fail, "NfcPlugin", "removeMimeType", [mimeType]);412    },413    removeNdefListener: function (callback, win, fail) {414        document.removeEventListener("ndef", callback, false);415        cordova.exec(win, fail, "NfcPlugin", "removeNdef", []);416    },417    showSettings: function (win, fail) {418        cordova.exec(win, fail, "NfcPlugin", "showSettings", []);419    }420};421var util = {422    // i must be <= 256423    toHex: function (i) {424        var hex;425        if (i < 0) {426            i += 256;427        }428        hex = i.toString(16);429        // zero padding430        if (hex.length === 1) {431            hex = "0" + hex;432        }433        return hex;434    },435    toPrintable: function(i) {436        if (i >= 0x20 & i <= 0x7F) {437            return String.fromCharCode(i);438        } else {439            return '.';440        }441    },442    bytesToString: function(bytes) {443        // based on http://ciaranj.blogspot.fr/2007/11/utf8-characters-encoding-in-javascript.html444        var result = "";445        var i, c, c1, c2, c3;446        i = c = c1 = c2 = c3 = 0;447        // Perform byte-order check.448        if( bytes.length >= 3 ) {449            if( (bytes[0] & 0xef) == 0xef && (bytes[1] & 0xbb) == 0xbb && (bytes[2] & 0xbf) == 0xbf ) {450                // stream has a BOM at the start, skip over451                i = 3;452            }453        }454        while ( i < bytes.length ) {455            c = bytes[i] & 0xff;456            if ( c < 128 ) {457                result += String.fromCharCode(c);458                i++;459            } else if ( (c > 191) && (c < 224) ) {460                if ( i + 1 >= bytes.length ) {461                    throw "Un-expected encoding error, UTF-8 stream truncated, or incorrect";462                }463                c2 = bytes[i + 1] & 0xff;464                result += String.fromCharCode( ((c & 31) << 6) | (c2 & 63) );465                i += 2;466            } else {467                if ( i + 2 >= bytes.length  || i + 1 >= bytes.length ) {468                    throw "Un-expected encoding error, UTF-8 stream truncated, or incorrect";469                }470                c2 = bytes[i + 1] & 0xff;471                c3 = bytes[i + 2] & 0xff;472                result += String.fromCharCode( ((c & 15) << 12) | ((c2 & 63) << 6) | (c3 & 63) );473                i += 3;474            }475        }476        return result;477    },478    stringToBytes: function(string) {479        // based on http://ciaranj.blogspot.fr/2007/11/utf8-characters-encoding-in-javascript.html480        var bytes = [];481        for (var n = 0; n < string.length; n++) {482            var c = string.charCodeAt(n);483            if (c < 128) {484                bytes[bytes.length]= c;485            } else if((c > 127) && (c < 2048)) {486                bytes[bytes.length] = (c >> 6) | 192;487                bytes[bytes.length] = (c & 63) | 128;488            } else {489                bytes[bytes.length] = (c >> 12) | 224;490                bytes[bytes.length] = ((c >> 6) & 63) | 128;491                bytes[bytes.length] = (c & 63) | 128;492            }493        }494        return bytes;495    },496    bytesToHexString: function (bytes) {497        var dec, hexstring, bytesAsHexString = "";498        for (var i = 0; i < bytes.length; i++) {499            if (bytes[i] >= 0) {500                dec = bytes[i];501            } else {502                dec = 256 + bytes[i];503            }504            hexstring = dec.toString(16);505            // zero padding506            if (hexstring.length === 1) {507                hexstring = "0" + hexstring;508            }509            bytesAsHexString += hexstring;510        }511        return bytesAsHexString;512    },513    // This function can be removed if record.type is changed to a String514    /**515     * Returns true if the record's TNF and type matches the supplied TNF and type.516     *517     * @record NDEF record518     * @tnf 3-bit TNF (Type Name Format) - use one of the TNF_* constants519     * @type byte array or String520     */521    isType: function(record, tnf, type) {522        if (record.tnf === tnf) { // TNF is 3-bit523            var recordType;524            if (typeof(type) === 'string') {525                recordType = type;526            } else {527                recordType = nfc.bytesToString(type);528            }529            return (nfc.bytesToString(record.type) === recordType);530        }531        return false;532    }533};534// this is a module in ndef-js535var textHelper = {536    decodePayload: function (data) {537        var languageCodeLength = (data[0] & 0x3F), // 6 LSBs538            languageCode = data.slice(1, 1 + languageCodeLength),539            utf16 = (data[0] & 0x80) !== 0; // assuming UTF-16BE540        // TODO need to deal with UTF in the future541        // console.log("lang " + languageCode + (utf16 ? " utf16" : " utf8"));542        return util.bytesToString(data.slice(languageCodeLength + 1));543    },544    // encode text payload545    // @returns an array of bytes546    encodePayload: function(text, lang, encoding) {547        // ISO/IANA language code, but we're not enforcing548        if (!lang) { lang = 'en'; }549        var encoded = util.stringToBytes(lang + text);550        encoded.unshift(lang.length);551        return encoded;552    }553};554// this is a module in ndef-js555var uriHelper = {556    // URI identifier codes from URI Record Type Definition NFCForum-TS-RTD_URI_1.0 2006-07-24557    // index in array matches code in the spec558    protocols: [ "", "http://www.", "https://www.", "http://", "https://", "tel:", "mailto:", "ftp://anonymous:anonymous@", "ftp://ftp.", "ftps://", "sftp://", "smb://", "nfs://", "ftp://", "dav://", "news:", "telnet://", "imap:", "rtsp://", "urn:", "pop:", "sip:", "sips:", "tftp:", "btspp://", "btl2cap://", "btgoep://", "tcpobex://", "irdaobex://", "file://", "urn:epc:id:", "urn:epc:tag:", "urn:epc:pat:", "urn:epc:raw:", "urn:epc:", "urn:nfc:" ],559    // decode a URI payload bytes560    // @returns a string561    decodePayload: function (data) {562        var prefix = uriHelper.protocols[data[0]];563        if (!prefix) { // 36 to 255 should be ""564            prefix = "";565        }566        return prefix + util.bytesToString(data.slice(1));567    },568    // shorten a URI with standard prefix569    // @returns an array of bytes570    encodePayload: function (uri) {571        var prefix,572            protocolCode,573            encoded;574        // check each protocol, unless we've found a match575        // "urn:" is the one exception where we need to keep checking576        // slice so we don't check ""577        uriHelper.protocols.slice(1).forEach(function(protocol) {578            if ((!prefix || prefix === "urn:") && uri.indexOf(protocol) === 0) {579                prefix = protocol;580            }581        });582        if (!prefix) {583            prefix = "";584        }585        encoded = util.stringToBytes(uri.slice(prefix.length));586        protocolCode = uriHelper.protocols.indexOf(prefix);587        // prepend protocol code588        encoded.unshift(protocolCode);589        return encoded;590    }591};592// added since WP8 must call a named function593// TODO consider switching NFC events from JS events to using the PG callbacks594function fireNfcTagEvent(eventType, tagAsJson) {595    setTimeout(function () {596        var e = document.createEvent('Events');597        e.initEvent(eventType, true, false);598        e.tag = JSON.parse(tagAsJson);599        console.log(e.tag);600        document.dispatchEvent(e);601    }, 10);602}603// textHelper and uriHelper aren't exported, add a property604ndef.uriHelper = uriHelper;605ndef.textHelper = textHelper;606// create aliases607nfc.bytesToString = util.bytesToString;608nfc.stringToBytes = util.stringToBytes;609nfc.bytesToHexString = util.bytesToHexString;610// kludge some global variables for plugman js-module support611// eventually these should be replaced and referenced via the module612window.nfc = nfc;613window.ndef = ndef;614window.util = util;615window.fireNfcTagEvent = fireNfcTagEvent;...

nfcutil.js

Source:nfcutil.js

1ï»¿2var compatibleDevices = [3    {4        deviceName: 'ACR122U USB NFC Reader',5        productId: 0x2200,6        vendorId: 0x072f,7        thumbnailURL: 'images/acr122u.png'8    },9    {10        deviceName: 'SCL3711 Contactless USB Smart Card Reader',11        productId: 0x5591,12        vendorId: 0x04e6,13        thumbnailURL: 'images/scl3711.png'14    }15]16function log(message, object) {17    console.log(message);18    console.log(object);19    return;20    var logArea = document.querySelector('.logs');21    var pre = document.createElement('pre');22    pre.textContent = message;23    if (object)24        pre.textContent += ': ' + JSON.stringify(object, null, 2) + '\n';25    logArea.appendChild(pre);26    logArea.scrollTop = logArea.scrollHeight;27    document.querySelector('#logContainer').classList.remove('small');28}29function handleDeviceTimeout(func, args) {30    var timeoutInMs = 1000;31    var hasTags = false;32    setTimeout(function () {33        if (!hasTags) {34            log('Timeout! No tag detected');35        }36    }, timeoutInMs);37    var args = args || [];38    args = args.concat([function () { hasTags = true; }]);39    func.apply(this, args);40}41function onReadNdefTagButtonClicked() {42    handleDeviceTimeout(readNdefTag);43}44function readNdefTag(callback) {45    chrome.nfc.read(device, {}, function (type, ndef) {46        log('Found ' + ndef.ndef.length + ' NFC Tag(s)');47        for (var i = 0; i < ndef.ndef.length; i++)48            log('NFC Tag', ndef.ndef[i]);49        callback();50    });51}52function onReadMifareTagButtonClicked() {53    handleDeviceTimeout(readMifareTag);54}55function readMifareTagEx(callback) {56    var blockNumber = 0; // starting logic block number.57    var blocksCount = 2; // logic block counts.58    chrome.nfc.read_logic(device, blockNumber, blocksCount, function (rc, data) {59        log('Mifare Classic Tag', UTIL_BytesToHex(data));60        if (callback)61            callback(rc, data);62    });63}64function readMifareTag(callback) {65    var blockNumber = 0; // starting logic block number.66    var blocksCount = 2; // logic block counts.67    chrome.nfc.read_logic(device, blockNumber, blocksCount, function (rc, data) {68        log('Mifare Classic Tag', UTIL_BytesToHex(data));69        callback();70    });71}72function onWriteNdefTagButtonClicked() {73    var ndefType = document.querySelector('#write-ndef-type').value;74    var ndefValue = document.querySelector('#write-ndef-value').value;75    handleDeviceTimeout(writeNdefTag, [ndefType, ndefValue]);76}77function writeNdefTag(ndefType, ndefValue, callback) {78    var ndef = {};79    ndef[ndefType] = ndefValue;80    chrome.nfc.write(device, { "ndef": [ndef] }, function (rc) {81        if (!rc) {82            log('NFC Tag written!');83        } else {84            log('NFC Tag write operation failed', rc);85        }86        callback();87    });88}89function onWriteMifareTagButtonClicked() {90    try {91        var mifareData = JSON.parse(document.querySelector('#mifare-data').value);92        handleDeviceTimeout(writeMifareTag, [mifareData]);93    }94    catch (e) {95        log('Error', 'Mifare Data is not an Array.');96    }97}98function writeMifareTag(mifareData, callback) {99    var data = new Uint8Array(mifareData);100    var blockNumber = 0; // starting logic block number.101    chrome.nfc.write_logic(device, 0, data, function (rc) {102        if (!rc) {103            log('Mifare Tag written!');104        } else {105            log('Mifare Tag write operation failed', rc);106        }107        callback();108    });109}110function onEmulateTagButtonClicked() {111    var ndefType = document.querySelector('#emulate-ndef-type').value;112    var ndefValue = document.querySelector('#emulate-ndef-value').value;113    handleDeviceTimeout(emulateTag, [ndefType, ndefValue]);114}115function emulateTag(ndefType, ndefValue, callback) {116    var ndef = {};117    ndef[ndefType] = ndefValue;118    chrome.nfc.emulate_tag(device, { "ndef": [ndef] }, function (rc) {119        if (!rc) {120            log('NFC Tag emulated!');121        } else {122            log('NFC Tag emulate operation failed', rc);123        }124        callback();125    });...

Using AI Code Generation

1var ndef = require('ndef');2var nfc = require('nfc').nfc;3var nfc = new NFC();4var tag = nfc.connect();5var message = ndef.decodeMessage(tag.ndefMessage);6console.log(message);7    throw err;8var nfc = require('nfc').nfc;9var nfc = new NFC();10var tag = nfc.connect();11var message = ndef.decodeMessage(tag.ndefMessage);12console.log(message);

Using AI Code Generation

1var ndef = require("ndef");2var encoded = ndef.encodeMessage([3    ndef.textRecord("Hello World")4]);5console.log(encoded);6var ndef = require("ndef");7var encoded = ndef.encodeMessage([8    ndef.textRecord("Hello World")9]);10console.log(encoded);11var ndef = require("ndef");12var encoded = ndef.encodeMessage([13    ndef.textRecord("Hello World")14]);15console.log(encoded);16var ndef = require("ndef");17var encoded = ndef.encodeMessage([18    ndef.textRecord("Hello World")19]);20console.log(encoded);21var ndef = require("ndef");22var encoded = ndef.encodeMessage([23    ndef.textRecord("Hello World")24]);25console.log(encoded);26var ndef = require("ndef");27var encoded = ndef.encodeMessage([28    ndef.textRecord("Hello World")29]);30console.log(encoded);31var ndef = require("ndef");32var encoded = ndef.encodeMessage([33    ndef.textRecord("Hello World")34]);35console.log(encoded);36var ndef = require("ndef");37var encoded = ndef.encodeMessage([38    ndef.textRecord("Hello World")39]);40console.log(encoded);41var ndef = require("ndef");42var encoded = ndef.encodeMessage([43    ndef.textRecord("Hello World")44]);45console.log(encoded);46var ndef = require("ndef");47var encoded = ndef.encodeMessage([48    ndef.textRecord("Hello World")49]);50console.log(encoded);51var ndef = require("ndef");52var encoded = ndef.encodeMessage([53    ndef.textRecord("Hello World")54]);55console.log(encoded);56var ndef = require("ndef");57var encoded = ndef.encodeMessage([58    ndef.textRecord("Hello World")59]);60console.log(encoded);61var ndef = require("

Using AI Code Generation

1var ndef = navigator.ndef;2var message = ndef.createMessage([3  ndef.textRecord("Hello, World!"),4  ndef.mimeMediaRecord("application/custom", "custom data")5]);6ndef.write(message).then(function() {7  console.log("Message written to tag.");8}, function(error) {9  console.log("Write failed :-( try again: " + error);10});11ndef.read().then(function(message) {12  console.log("Message read from tag: " + JSON.stringify(message));13}, function(error) {14  console.log("Read failed :-( try again: " + error);15});16ndef.onreading = function(event) {17  console.log("Message read from tag: " + JSON.stringify(event.message));18};19ndef.stopListening().then(function() {20  console.log("Stopped reading tags.");21}, function(error) {22  console.log("Stop listening failed :-( try again: " + error);23});24ndef.onchange = function(event) {25  console.log("Tag changed: " + event.serialNumber);26};27ndef.stopMonitoring().then(function() {28  console.log("Stopped monitoring tags.");29}, function(error) {30  console.log("Stop monitoring failed :-( try again: " + error);31});32var nfc = navigator.nfc;33nfc.write("Hello, World!").then(function() {34  console.log("Message written to tag.");35}, function(error) {36  console.log("Write failed :-( try again: " + error);37});38nfc.read().then(function(message) {39  console.log("Message read from tag: " + message);40}, function(error) {41  console.log("Read failed :-( try again: " + error);42});43nfc.onreading = function(event) {44  console.log("Message read from tag: " + event.message);45};46nfc.stopListening().then(function() {47  console.log("Stopped reading tags.");

Using AI Code Generation

1var ndef = require('ndef');2var NdefLib = require('ndeflib');3var ndeflib = new NdefLib();4var text = 'Hello World';5var textRecord = ndef.textRecord(text);6var uriRecord = ndef.uriRecord(uri);7var records = [textRecord, uriRecord];8var message = ndef.encodeMessage(records);9var buffer = ndef.decodeMessage(message);10console.log(buffer);11var ndef = require('ndef');12var NdefLib = require('ndeflib');13var ndeflib = new NdefLib();14var text = 'Hello World';15var textRecord = ndeflib.textRecord(text);16var uriRecord = ndeflib.uriRecord(uri);17var records = [textRecord, uriRecord];18var message = ndeflib.encodeMessage(records);19var buffer = ndeflib.decodeMessage(message);20console.log(buffer);21var ndef = require('ndef');22var NdefLib = require('ndeflib');23var ndeflib = new NdefLib();24var text = 'Hello World';25var textRecord = ndeflib.textRecord(text);26var uriRecord = ndeflib.uriRecord(uri);27var records = [textRecord, uriRecord];28var message = ndeflib.encodeMessage(records);29var buffer = ndeflib.decodeMessage(message);30console.log(buffer);31var ndef = require('ndef');32var NdefLib = require('ndeflib');33var ndeflib = new NdefLib();34var text = 'Hello World';35var textRecord = ndef.textRecord(text);36var uriRecord = ndef.uriRecord(uri);37var records = [textRecord, uriRecord];38var message = ndef.encodeMessage(records);39var buffer = ndef.decodeMessage(message);40console.log(buffer);41var ndef = require('ndef');42var NdefLib = require('ndeflib');43var ndeflib = new NdefLib();44var text = 'Hello World';45var textRecord = ndef.textRecord(text);

Using AI Code Generation

1var ndef = new NDEF();2var ndefMessage = ndef.textRecord("Hello, World!");3var success = ndef.writeNDEF(ndefMessage);4console.log("Wrote NDEF message: " + success);5var nfc = new NFC();6var success = nfc.writeNDEF(ndefMessage);7console.log("Wrote NDEF message: " + success);8var nfc = new NFC();9var success = nfc.writeNDEF(ndefMessage);10console.log("Wrote NDEF message: " + success);11var ndef = new NDEF();12var ndefMessage = ndef.textRecord("Hello, World!");13var success = ndef.writeNDEF(ndefMessage);14console.log("Wrote NDEF message: " + success);15var nfc = new NFC();16var success = nfc.writeNDEF(ndefMessage);17console.log("Wrote NDEF message: " + success);18var nfc = new NFC();19var success = nfc.writeNDEF(ndefMessage);20console.log("Wrote NDEF message: " + success);

Using AI Code Generation

1var nfc = require("nfc");2var ndef = nfc.ndef;3var util = require("util");4function writeNdefMessage(ndefMessage) {5    nfc.writeNdefMessage(ndefMessage, function(err) {6        if (err) {7            console.log("Error writing NDEF message: " + err);8        } else {9            console.log("Successfully wrote NDEF message");10        }11    });12}13function readNdefMessage() {14    nfc.readNdefMessage(function(err, ndefMessage) {15        if (err) {16            console.log("Error reading NDEF message: " + err);17        } else {18            console.log("Successfully read NDEF message: " + util.inspect(ndefMessage));19        }20    });21}22function readNdefMessage2() {23    nfc.readNdefMessage(function(err, ndefMessage) {24        if (err) {25            console.log("Error reading NDEF message: " + err);26        } else {27            console.log("Successfully read NDEF message: " + util.inspect(ndefMessage));28        }29    });30}31function readNdefMessage3() {32    nfc.readNdefMessage(function(err, ndefMessage) {33        if (err) {34            console.log("Error reading NDEF message: " + err);35        } else {36            console.log("Successfully read NDEF message: " + util.inspect(ndefMessage));37        }38    });39}40function readNdefMessage4() {41    nfc.readNdefMessage(function(err, ndefMessage) {42        if (err) {43            console.log("Error reading NDEF message: " + err);44        } else {45            console.log("Successfully read NDEF message: " + util.inspect(ndefMessage));46        }47    });48}

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