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How to use computeAdler32 method in wpt

Best JavaScript code snippet using wpt

parser.js

Source:parser.js

...32var _jpeg_stream = require('./jpeg_stream');33var _jpx_stream = require('./jpx_stream');34var MAX_LENGTH_TO_CACHE = 1000;35var MAX_ADLER32_LENGTH = 5552;36function computeAdler32(bytes) {37  var bytesLength = bytes.length;38  if (bytesLength >= MAX_ADLER32_LENGTH) {39    throw new Error('computeAdler32: The input is too large.');40  }41  var a = 1,42      b = 0;43  for (var i = 0; i < bytesLength; ++i) {44    a += bytes[i] & 0xFF;45    b += a;46  }47  return b % 65521 << 16 | a % 65521;48}49var Parser = function ParserClosure() {50  function Parser(lexer, allowStreams, xref, recoveryMode) {51    this.lexer = lexer;52    this.allowStreams = allowStreams;53    this.xref = xref;54    this.recoveryMode = recoveryMode || false;55    this.imageCache = Object.create(null);56    this.refill();57  }58  Parser.prototype = {59    refill: function Parser_refill() {60      this.buf1 = this.lexer.getObj();61      this.buf2 = this.lexer.getObj();62    },63    shift: function Parser_shift() {64      if ((0, _primitives.isCmd)(this.buf2, 'ID')) {65        this.buf1 = this.buf2;66        this.buf2 = null;67      } else {68        this.buf1 = this.buf2;69        this.buf2 = this.lexer.getObj();70      }71    },72    tryShift: function Parser_tryShift() {73      try {74        this.shift();75        return true;76      } catch (e) {77        if (e instanceof _util.MissingDataException) {78          throw e;79        }80        return false;81      }82    },83    getObj: function Parser_getObj(cipherTransform) {84      var buf1 = this.buf1;85      this.shift();86      if (buf1 instanceof _primitives.Cmd) {87        switch (buf1.cmd) {88          case 'BI':89            return this.makeInlineImage(cipherTransform);90          case '[':91            var array = [];92            while (!(0, _primitives.isCmd)(this.buf1, ']') && !(0, _primitives.isEOF)(this.buf1)) {93              array.push(this.getObj(cipherTransform));94            }95            if ((0, _primitives.isEOF)(this.buf1)) {96              if (!this.recoveryMode) {97                throw new _util.FormatError('End of file inside array');98              }99              return array;100            }101            this.shift();102            return array;103          case '<<':104            var dict = new _primitives.Dict(this.xref);105            while (!(0, _primitives.isCmd)(this.buf1, '>>') && !(0, _primitives.isEOF)(this.buf1)) {106              if (!(0, _primitives.isName)(this.buf1)) {107                (0, _util.info)('Malformed dictionary: key must be a name object');108                this.shift();109                continue;110              }111              var key = this.buf1.name;112              this.shift();113              if ((0, _primitives.isEOF)(this.buf1)) {114                break;115              }116              dict.set(key, this.getObj(cipherTransform));117            }118            if ((0, _primitives.isEOF)(this.buf1)) {119              if (!this.recoveryMode) {120                throw new _util.FormatError('End of file inside dictionary');121              }122              return dict;123            }124            if ((0, _primitives.isCmd)(this.buf2, 'stream')) {125              return this.allowStreams ? this.makeStream(dict, cipherTransform) : dict;126            }127            this.shift();128            return dict;129          default:130            return buf1;131        }132      }133      if (Number.isInteger(buf1)) {134        var num = buf1;135        if (Number.isInteger(this.buf1) && (0, _primitives.isCmd)(this.buf2, 'R')) {136          var ref = new _primitives.Ref(num, this.buf1);137          this.shift();138          this.shift();139          return ref;140        }141        return num;142      }143      if ((0, _util.isString)(buf1)) {144        var str = buf1;145        if (cipherTransform) {146          str = cipherTransform.decryptString(str);147        }148        return str;149      }150      return buf1;151    },152    findDefaultInlineStreamEnd: function findDefaultInlineStreamEnd(stream) {153      var E = 0x45,154          I = 0x49,155          SPACE = 0x20,156          LF = 0xA,157          CR = 0xD;158      var n = 10,159          NUL = 0x0;160      var startPos = stream.pos,161          state = 0,162          ch = void 0,163          maybeEIPos = void 0;164      while ((ch = stream.getByte()) !== -1) {165        if (state === 0) {166          state = ch === E ? 1 : 0;167        } else if (state === 1) {168          state = ch === I ? 2 : 0;169        } else {170          (0, _util.assert)(state === 2);171          if (ch === SPACE || ch === LF || ch === CR) {172            maybeEIPos = stream.pos;173            var followingBytes = stream.peekBytes(n);174            for (var i = 0, ii = followingBytes.length; i < ii; i++) {175              ch = followingBytes[i];176              if (ch === NUL && followingBytes[i + 1] !== NUL) {177                continue;178              }179              if (ch !== LF && ch !== CR && (ch < SPACE || ch > 0x7F)) {180                state = 0;181                break;182              }183            }184            if (state === 2) {185              break;186            }187          } else {188            state = 0;189          }190        }191      }192      if (ch === -1) {193        (0, _util.warn)('findDefaultInlineStreamEnd: ' + 'Reached the end of the stream without finding a valid EI marker');194        if (maybeEIPos) {195          (0, _util.warn)('... trying to recover by using the last "EI" occurrence.');196          stream.skip(-(stream.pos - maybeEIPos));197        }198      }199      return stream.pos - 4 - startPos;200    },201    findDCTDecodeInlineStreamEnd: function Parser_findDCTDecodeInlineStreamEnd(stream) {202      var startPos = stream.pos,203          foundEOI = false,204          b,205          markerLength,206          length;207      while ((b = stream.getByte()) !== -1) {208        if (b !== 0xFF) {209          continue;210        }211        switch (stream.getByte()) {212          case 0x00:213            break;214          case 0xFF:215            stream.skip(-1);216            break;217          case 0xD9:218            foundEOI = true;219            break;220          case 0xC0:221          case 0xC1:222          case 0xC2:223          case 0xC3:224          case 0xC5:225          case 0xC6:226          case 0xC7:227          case 0xC9:228          case 0xCA:229          case 0xCB:230          case 0xCD:231          case 0xCE:232          case 0xCF:233          case 0xC4:234          case 0xCC:235          case 0xDA:236          case 0xDB:237          case 0xDC:238          case 0xDD:239          case 0xDE:240          case 0xDF:241          case 0xE0:242          case 0xE1:243          case 0xE2:244          case 0xE3:245          case 0xE4:246          case 0xE5:247          case 0xE6:248          case 0xE7:249          case 0xE8:250          case 0xE9:251          case 0xEA:252          case 0xEB:253          case 0xEC:254          case 0xED:255          case 0xEE:256          case 0xEF:257          case 0xFE:258            markerLength = stream.getUint16();259            if (markerLength > 2) {260              stream.skip(markerLength - 2);261            } else {262              stream.skip(-2);263            }264            break;265        }266        if (foundEOI) {267          break;268        }269      }270      length = stream.pos - startPos;271      if (b === -1) {272        (0, _util.warn)('Inline DCTDecode image stream: ' + 'EOI marker not found, searching for /EI/ instead.');273        stream.skip(-length);274        return this.findDefaultInlineStreamEnd(stream);275      }276      this.inlineStreamSkipEI(stream);277      return length;278    },279    findASCII85DecodeInlineStreamEnd: function Parser_findASCII85DecodeInlineStreamEnd(stream) {280      var TILDE = 0x7E,281          GT = 0x3E;282      var startPos = stream.pos,283          ch,284          length;285      while ((ch = stream.getByte()) !== -1) {286        if (ch === TILDE && stream.peekByte() === GT) {287          stream.skip();288          break;289        }290      }291      length = stream.pos - startPos;292      if (ch === -1) {293        (0, _util.warn)('Inline ASCII85Decode image stream: ' + 'EOD marker not found, searching for /EI/ instead.');294        stream.skip(-length);295        return this.findDefaultInlineStreamEnd(stream);296      }297      this.inlineStreamSkipEI(stream);298      return length;299    },300    findASCIIHexDecodeInlineStreamEnd: function Parser_findASCIIHexDecodeInlineStreamEnd(stream) {301      var GT = 0x3E;302      var startPos = stream.pos,303          ch,304          length;305      while ((ch = stream.getByte()) !== -1) {306        if (ch === GT) {307          break;308        }309      }310      length = stream.pos - startPos;311      if (ch === -1) {312        (0, _util.warn)('Inline ASCIIHexDecode image stream: ' + 'EOD marker not found, searching for /EI/ instead.');313        stream.skip(-length);314        return this.findDefaultInlineStreamEnd(stream);315      }316      this.inlineStreamSkipEI(stream);317      return length;318    },319    inlineStreamSkipEI: function Parser_inlineStreamSkipEI(stream) {320      var E = 0x45,321          I = 0x49;322      var state = 0,323          ch;324      while ((ch = stream.getByte()) !== -1) {325        if (state === 0) {326          state = ch === E ? 1 : 0;327        } else if (state === 1) {328          state = ch === I ? 2 : 0;329        } else if (state === 2) {330          break;331        }332      }333    },334    makeInlineImage: function Parser_makeInlineImage(cipherTransform) {335      var lexer = this.lexer;336      var stream = lexer.stream;337      var dict = new _primitives.Dict(this.xref),338          dictLength = void 0;339      while (!(0, _primitives.isCmd)(this.buf1, 'ID') && !(0, _primitives.isEOF)(this.buf1)) {340        if (!(0, _primitives.isName)(this.buf1)) {341          throw new _util.FormatError('Dictionary key must be a name object');342        }343        var key = this.buf1.name;344        this.shift();345        if ((0, _primitives.isEOF)(this.buf1)) {346          break;347        }348        dict.set(key, this.getObj(cipherTransform));349      }350      if (lexer.beginInlineImagePos !== -1) {351        dictLength = stream.pos - lexer.beginInlineImagePos;352      }353      var filter = dict.get('Filter', 'F'),354          filterName;355      if ((0, _primitives.isName)(filter)) {356        filterName = filter.name;357      } else if (Array.isArray(filter)) {358        var filterZero = this.xref.fetchIfRef(filter[0]);359        if ((0, _primitives.isName)(filterZero)) {360          filterName = filterZero.name;361        }362      }363      var startPos = stream.pos,364          length = void 0;365      if (filterName === 'DCTDecode' || filterName === 'DCT') {366        length = this.findDCTDecodeInlineStreamEnd(stream);367      } else if (filterName === 'ASCII85Decode' || filterName === 'A85') {368        length = this.findASCII85DecodeInlineStreamEnd(stream);369      } else if (filterName === 'ASCIIHexDecode' || filterName === 'AHx') {370        length = this.findASCIIHexDecodeInlineStreamEnd(stream);371      } else {372        length = this.findDefaultInlineStreamEnd(stream);373      }374      var imageStream = stream.makeSubStream(startPos, length, dict);375      var cacheKey = void 0;376      if (length < MAX_LENGTH_TO_CACHE && dictLength < MAX_ADLER32_LENGTH) {377        var imageBytes = imageStream.getBytes();378        imageStream.reset();379        var initialStreamPos = stream.pos;380        stream.pos = lexer.beginInlineImagePos;381        var dictBytes = stream.getBytes(dictLength);382        stream.pos = initialStreamPos;383        cacheKey = computeAdler32(imageBytes) + '_' + computeAdler32(dictBytes);384        var cacheEntry = this.imageCache[cacheKey];385        if (cacheEntry !== undefined) {386          this.buf2 = _primitives.Cmd.get('EI');387          this.shift();388          cacheEntry.reset();389          return cacheEntry;390        }391      }392      if (cipherTransform) {393        imageStream = cipherTransform.createStream(imageStream, length);394      }395      imageStream = this.filter(imageStream, dict, length);396      imageStream.dict = dict;397      if (cacheKey !== undefined) {...

volume.ts

Source:volume.ts

1import { ComputeAdler32 } from './utils';2import { Reader, FileReader } from './reader';3const VOLUME_MAGIC = 0xA2B924CE;4export enum VolumeVersion {5	Windows = 0,6	Mac = 17}8export interface VolumeHeader {9	rawBytes: Buffer; 10	length: number; /**< Length in bytes of the header */11	version: VolumeVersion;12	sequence: number; /**< Index of this file in the archive. Incremented every single time a new file is created whether it be a volume, slice, etc. These provide a total ordering of alla files in an archive */13	14	// NOTE: I don't call these identifiers, because TI has separate 16-byte UUIDs stored in the files to be the identifiers15	archiveKey: Buffer; /**< Random 4byte identifier common to all files in this volume */16	sliceKey: Buffer; /**< Random 4bytes to identify this slice */17	volumeKey: Buffer; /**< Random 4bytes to identify this volume */18	checkSumValid: boolean; /**< Whether or the checksum of the header is valid */19	20	blockSize: number;21}22type VolumeGenerator = (fileName: string, reader: Reader, header: VolumeHeader) => Promise<Volume>;23const VolumeImpls: { [v: number]: VolumeGenerator } = {};24export default abstract class Volume {25	/**26	 * Given a .tib file, this will open it and load basic information on it27	 */28	public static async Open(fileName: string) {29		let reader = await FileReader.Create(fileName);30		let header: VolumeHeader;31		try {32			header = await this.LoadHeader(reader);33		}34		catch(e) {35			// TODO: It is annoying that this is redundant with the volume's close() function 36			await reader.close();37			throw e;38		}39		let Gen = VolumeImpls[header.version];40		if(!Gen) {41			throw new Error('No implementation for volume type: ' + header.version);42		}43		var vol = await Gen(fileName, reader, header);44		if(!vol.validateHeader()) {45			console.warn('Volume contains suspicious header')46		}47		return vol;48	}49	private static async LoadHeader(reader: Reader): Promise<VolumeHeader> {50		reader.seek(0);51		let headerBlock = Buffer.from(await reader.readBytes(64));// < Just to be safe this is way more than the 36 bytes that the usual Mac header would take up52	53		let magic = headerBlock.readUInt32LE(0);54		if(magic !== VOLUME_MAGIC) {55			throw new Error('Wrong magic!');56		}57	58		// Should be 24 00 01 00 for Mac59		let headerLength = headerBlock.readUInt16LE(4);60		let version = headerBlock.readUInt16LE(6); // < 01 is Mac, 00 is windows?61		// I know that at offset 0x10 in the file, there are definately 4 random bytes created at the time of volume creation62		let identifiers = headerBlock.slice(8, 8 + 12);63	64		// This will start at 1 and will be incremented for every file in a backup split into multiple files (essentialyl the same as the )65		let sequence = headerBlock.readUInt32LE(20);66	67		let headerSum = headerBlock.readUInt32LE(0x18);68	69		for(let i = headerLength; i < 0x24; i++) { headerBlock[i] = 0; } // This is mainly to simulate the current version of True Image exactly70	71		// Remove checksum from buffer for computing checksum72		headerBlock.writeUInt32LE(0, 0x18);73	74		let sumNum: number = ComputeAdler32(headerBlock.slice(0, headerLength));75		// Restore the checksum so that we can store the pristine header bytes76		headerBlock.writeUInt32LE(headerSum, 0x18);77		let isSumValid = sumNum === headerSum;78	79	80		// Should usually be 409681		// NOTE: True Imae supports a max block size of 0x1000082		let blockSize = headerBlock.readUInt32LE(0x1c);83	84		return {85			rawBytes: headerBlock.slice(0, headerLength),86			length: headerLength,87			version: version,88			archiveKey: identifiers.slice(0, 4),89			sliceKey: identifiers.slice(4, 8),90			volumeKey: identifiers.slice(8, 12),91			sequence: sequence,92			checkSumValid: isSumValid,93			blockSize: blockSize94		};95	}96	/**97	 * Registers a new implementation of a volume format98	 * 99	 * NOTE: Don't use this externally. This is mainly for internal usage100	 */101	public static AddType(v: VolumeVersion, fn: VolumeGenerator) {102		if(VolumeImpls[v]) {103			throw new Error('Duplicate implementation of volume type: ' + v);104		}105		VolumeImpls[v] = fn;106	}107	public fileName: string;108	public header: VolumeHeader;109	public reader: Reader;110	protected constructor(fileName: string, reader: Reader, header: VolumeHeader) {111		this.fileName = fileName;112		this.reader = reader;113		this.header = header;114	}115	close() {116		return this.reader.close();117	}118	/**119	 * Depending on the format version, we do expect certain values (i.e. block size, length, etc.) to be pretty predictable. This will verify that those values are what we expect them to be120	 * 121	 * NOTE: Even if you don't use this, you SHOULD STILL check that the header checksum is valid122	 * 123	 * This is essentially a soft way of sanity checking that the volume seems valid124	 * While this is not a definitive check for validitity, it is a very good sign in if returns true and we haven't seen any samples yet that would contradict these rules125	 */126	validateHeader(): boolean {127		if(!this.header.checkSumValid) {128			return false;129		}130		if(this.header.version === VolumeVersion.Mac) {131			if(this.header.length !== 0x24 || this.header.blockSize !== 4096 || this.header.sequence !== 1) {132				return false;133			}134		}135		else if(this.header.version === VolumeVersion.Windows) {136			if(this.header.length !== 0x20 || this.header.blockSize !== 32) {137				return false;138			}139		}140		else {141			// Unknown version142			return false;143		}144		return true;145	}...

adler32.ts

Source:adler32.ts

...16	const view = u8ArrayFromBufferSource(source);17	if (! view) {18		throw new TypeError("source must be a BufferSource");19	}20	return computeAdler32(view, seed);21}22const BASE = 65521;     /* largest prime smaller than 65536 */23const NMAX = 5552;24/**25 * Compute the Adler-32 checksum of a sequence of unsigned bytes.26 * @param buf source data, unsigned bytes27 * @param adler Optional seed for the checksum28 */29function computeAdler32(buf: Uint8Array, adler = 1) {30	/* split Adler-32 into component sums */31	let sum2 = (adler >>> 16) & 0xffff;32	adler &= 0xffff;33	let len = buf.length;34	let offset = 0;35	/* do length NMAX blocks -- requires just one modulo operation */36	while (len >= NMAX) {37		len -= NMAX;38		let n = NMAX / 16;          /* NMAX is divisible by 16 */39		do {40			adler += buf[offset++]; sum2 += adler;41			adler += buf[offset++]; sum2 += adler;42			adler += buf[offset++]; sum2 += adler;43			adler += buf[offset++]; sum2 += adler;...

Using AI Code Generation

1var wptools = require('wptools');2var buf = new Buffer([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]);3var adler32 = wptools.computeAdler32(buf);4console.log("adler32 = " + adler32);5    var wptools = require('wptools');6    var buf = new Buffer([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]);7    var adler32 = wptools.computeAdler32(buf);8    console.log("adler32 = " + adler32);9    $wptools = require('wptools');10    $buf = new Buffer([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]);11    $adler32 = $wptools->computeAdler32($buf);12    echo "adler32 = " + $adler32;13    $wptools = require('wptools');14    $buf = new Buffer([0, 1, 2, 3, 4, 5, 6, 7, 8, 9]);15    $adler32 = $wptools->computeAdler32($buf);16    echo "adler32 = " + $adler32;17import wptools18buf = new Buffer([0, 1, 2, 3, 4, 5, 6, 7, 8, 9])19adler32 = wptools.computeAdler32(buf)

Using AI Code Generation

1var wpt = require('webeagebestpagetest');2var adler32lerwpt.comput2Adlpr32t.teotmputeAdler32('test');3var wpt = re=qire('webpagetest');'t t'omputeAdler32('test');4varwc= r quiri('eebp)gst');5var=wpcompuAle32('t');6var buffer = fs.readFi eSync('test.txt');7var=adler32  rwpt.computeAdler32(buffer);8console.log(adler32);

Using AI Code Generation

1var wpt = require('wpt');2var url = equire('fs');3var buffer = fs.readFileSync('test.txt');4var adler32 = wpt.computeAdler32(buffer);5url, funci/ (prr, ){6  eenowlc.cog("Erle:"+e7}se {8 c hA:);9  }10}

Using AI Code Generation

1var'ws'ool=qie('wptool');2va haso=ps =olequcrA('(;ool');3v/a hasa = we'owlo.compul';('tt');4vrwol=rqic('de o es');5vamlro/s=wpol.compu('tt');6voruwpeAolr3=ertquir('adl3.lu');7vartA!O=mwpt>ol.cmpu('tt');8ebpagetest');9ebpagetest');10varwpools =require('wpool');

Using AI Code Generation

1Adler32('test');2r nsole.log(awlpr32);3var adler32 = wpt.coebmagepestuteAdler32('test');4consadeer32.lo2'est');5csol.log(;6varw= require('webpagest');7var= wpt.omputAdler32('test');8onole.log(adler32);9vawp = requir('wpt');10var adler32 =wpt.computedler32('test');11console.log(adler32);12var wpt = require('webpagetest');13console.log(ad14vr=req('wbpgetet');15varal32 =wpt.compuAder32('tt');16cl.lg(a17var wpt = require("wpt");18var data = new Buffer("hello");19var adler32 = wpt.computeAdler32(data);20console.log("adler32 of hello is " + adler32);21var wpt = require("wpt");22var data = new Buffer("hello");23var adler32 = wpt.computeAdler32(data);24console.log("adler32 of hello is " + adler32);25computeAdler32(buffer)26computeCrc32(buffer)27computeCrc32c(buffer)28hash(buffer, algorithm)

Using AI Code Generation

1var wpt = require('wpt');2var adler32 = wpt.computeAdler32('Hello World');3console.log(adler32);4var wpt = require('wpt');5var adler32 = wpt.computeAdler32('Hello World');6console.log(adler32);7var wpt = require('wpt');8var adler32 = wpt.computeAdler32('Hello World');9console.log(adler32);10var wpt = require('wpt');11var adler32 = wpt.computeAdler32('Hello World');12console.log(adler32);13var wpt = require('wpt');14var adler32 = wpt.computeAdler32('Hello World');15console.log(adler32);16var wpt = require('wpt');17var adler32 = wpt.computeAdler32('Hello World');18console.log(adler32);19var wpt = require('wpt');20var adler32 = wpt.computeAdler32('Hello World');21console.log(adler32);22var wpt = require('wpt');23var adler32 = wpt.computeAdler32('Hello World');24console.log(adler32);25var wpt = require('wpt');

Using AI Code Generation

1var wpt = require('wpt');2var adler32 = wpt.computeAdler32('test');3console.log('adler32: ', adler32);4{5  "dependencies": {6  }7}8var wpt = require('wpt');9var adler32 = wpt.computeAdler32('Hello World');10console.log(adler32);11var wpt = require('wpt');12var adler32 = wpt.computeAdler32('Hello World');13console.log(adler32);14var wpt = require('wpt');15var adler32 = wpt.computeAdler32('Hello World');16console.log(adler32);17var wpt = require('wpt');18var adler32 = wpt.computeAdler32('Hello World');19console.log(adler32);20var wpt = require('wpt');21var adler32 = wpt.computeAdler32('Hello World');22console.log(adler32);23var wpt = require('wpt');24var adler32 = wpt.computeAdler32('Hello World');25console.log(adler32);26var wpt = require('wpt');27var adler32 = wpt.computeAdler32('Hello World');28console.log(adler32);29var wpt = require('wpt');30var adler32 = wpt.computeAdler32('Hello World');31console.log(adler32);32var wpt = require('wpt');

Using AI Code Generation

1var wpt = require('wpt');2var adler32 = wpt.computeAdler32('Hello World');3console.log(adler32);4var wpt = require('wpt');5var adler32 = wpt.computeAdler32('Hello World');6console.log(adler32);7var wpt = require('wpt');8var adler32 = wpt.computeAdler32('Hello World');9console.lg(adler32);10vr wpt = require('wpt');11var adler32 = wpt.computeAdler32('Hello World');12cosole.log(adler32);13var wpt = requre('wpt');14var adler32 = wpt.computeAdler32('Hello World');15cosole.log(aler32);16va wpt = require('wpt');17var adler32 = wpt.omputeAdler32('HlloWorld');18nsole.log(adler32);19var wpt = require('wpt');20var adler32 = wpt.computeAdler32('Hello World');21console.log(adler32);22var wpt = require('wpt');23var adler32 = wpt.computeAlr32('HelloWorld');24console.log(dler32);25var wpt = require('wpt');26var wpt = require('wpt');27wpt.computeAdler32(url, function(err, adler32) {28  if (err) {29    console.log("Error: " + err);30  } else {31    console.log("Adler32: " + adler32);32  }33});

Using AI Code Generation

1var wpt = require("wpt");2var data = new Buffer("hello");3var adler32 = wpt.computeAdler32(data);4console.log("adler32 of hello is " + adler32);5var wpt = require("wpt");6var data = new Buffer("hello");7var adler32 = wpt.computeAdler32(data);8console.log("adler32 of hello is " + adler32);9computeAdler32(buffer)10computeCrc32(buffer)11computeCrc32c(buffer)12hash(buffer, algorithm)

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