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How to use HuffmanLine method in wpt

Best JavaScript code snippet using wpt

jbig2.js

Source:jbig2.js

...1324      }1325      customTables[currentSegment] = decodeTablesSegment(data, start, end);1326    }1327  };1328  function HuffmanLine(lineData) {1329    if (lineData.length === 2) {1330      this.isOOB = true;1331      this.rangeLow = 0;1332      this.prefixLength = lineData[0];1333      this.rangeLength = 0;1334      this.prefixCode = lineData[1];1335      this.isLowerRange = false;1336    } else {1337      this.isOOB = false;1338      this.rangeLow = lineData[0];1339      this.prefixLength = lineData[1];1340      this.rangeLength = lineData[2];1341      this.prefixCode = lineData[3];1342      this.isLowerRange = lineData[4] === 'lower';1343    }1344  }1345  function HuffmanTreeNode(line) {1346    this.children = [];1347    if (line) {1348      this.isLeaf = true;1349      this.rangeLength = line.rangeLength;1350      this.rangeLow = line.rangeLow;1351      this.isLowerRange = line.isLowerRange;1352      this.isOOB = line.isOOB;1353    } else {1354      this.isLeaf = false;1355    }1356  }1357  HuffmanTreeNode.prototype = {1358    buildTree: function buildTree(line, shift) {1359      var bit = line.prefixCode >> shift & 1;1360      if (shift <= 0) {1361        this.children[bit] = new HuffmanTreeNode(line);1362      } else {1363        var node = this.children[bit];1364        if (!node) {1365          this.children[bit] = node = new HuffmanTreeNode(null);1366        }1367        node.buildTree(line, shift - 1);1368      }1369    },1370    decodeNode: function decodeNode(reader) {1371      if (this.isLeaf) {1372        if (this.isOOB) {1373          return null;1374        }1375        var htOffset = reader.readBits(this.rangeLength);1376        return this.rangeLow + (this.isLowerRange ? -htOffset : htOffset);1377      }1378      var node = this.children[reader.readBit()];1379      if (!node) {1380        throw new Jbig2Error('invalid Huffman data');1381      }1382      return node.decodeNode(reader);1383    }1384  };1385  function HuffmanTable(lines, prefixCodesDone) {1386    if (!prefixCodesDone) {1387      this.assignPrefixCodes(lines);1388    }1389    this.rootNode = new HuffmanTreeNode(null);1390    var i = void 0,1391        ii = lines.length,1392        line = void 0;1393    for (i = 0; i < ii; i++) {1394      line = lines[i];1395      if (line.prefixLength > 0) {1396        this.rootNode.buildTree(line, line.prefixLength - 1);1397      }1398    }1399  }1400  HuffmanTable.prototype = {1401    decode: function decode(reader) {1402      return this.rootNode.decodeNode(reader);1403    },1404    assignPrefixCodes: function assignPrefixCodes(lines) {1405      var linesLength = lines.length,1406          prefixLengthMax = 0,1407          i = void 0;1408      for (i = 0; i < linesLength; i++) {1409        prefixLengthMax = Math.max(prefixLengthMax, lines[i].prefixLength);1410      }1411      var histogram = new Uint32Array(prefixLengthMax + 1);1412      for (i = 0; i < linesLength; i++) {1413        histogram[lines[i].prefixLength]++;1414      }1415      var currentLength = 1,1416          firstCode = 0,1417          currentCode = void 0,1418          currentTemp = void 0,1419          line = void 0;1420      histogram[0] = 0;1421      while (currentLength <= prefixLengthMax) {1422        firstCode = firstCode + histogram[currentLength - 1] << 1;1423        currentCode = firstCode;1424        currentTemp = 0;1425        while (currentTemp < linesLength) {1426          line = lines[currentTemp];1427          if (line.prefixLength === currentLength) {1428            line.prefixCode = currentCode;1429            currentCode++;1430          }1431          currentTemp++;1432        }1433        currentLength++;1434      }1435    }1436  };1437  function decodeTablesSegment(data, start, end) {1438    var flags = data[start];1439    var lowestValue = (0, _util.readUint32)(data, start + 1) & 0xFFFFFFFF;1440    var highestValue = (0, _util.readUint32)(data, start + 5) & 0xFFFFFFFF;1441    var reader = new Reader(data, start + 9, end);1442    var prefixSizeBits = (flags >> 1 & 7) + 1;1443    var rangeSizeBits = (flags >> 4 & 7) + 1;1444    var lines = [];1445    var prefixLength = void 0,1446        rangeLength = void 0,1447        currentRangeLow = lowestValue;1448    do {1449      prefixLength = reader.readBits(prefixSizeBits);1450      rangeLength = reader.readBits(rangeSizeBits);1451      lines.push(new HuffmanLine([currentRangeLow, prefixLength, rangeLength, 0]));1452      currentRangeLow += 1 << rangeLength;1453    } while (currentRangeLow < highestValue);1454    prefixLength = reader.readBits(prefixSizeBits);1455    lines.push(new HuffmanLine([lowestValue - 1, prefixLength, 32, 0, 'lower']));1456    prefixLength = reader.readBits(prefixSizeBits);1457    lines.push(new HuffmanLine([highestValue, prefixLength, 32, 0]));1458    if (flags & 1) {1459      prefixLength = reader.readBits(prefixSizeBits);1460      lines.push(new HuffmanLine([prefixLength, 0]));1461    }1462    return new HuffmanTable(lines, false);1463  }1464  var standardTablesCache = {};1465  function getStandardTable(number) {1466    var table = standardTablesCache[number];1467    if (table) {1468      return table;1469    }1470    var lines = void 0;1471    switch (number) {1472      case 1:1473        lines = [[0, 1, 4, 0x0], [16, 2, 8, 0x2], [272, 3, 16, 0x6], [65808, 3, 32, 0x7]];1474        break;1475      case 2:1476        lines = [[0, 1, 0, 0x0], [1, 2, 0, 0x2], [2, 3, 0, 0x6], [3, 4, 3, 0xE], [11, 5, 6, 0x1E], [75, 6, 32, 0x3E], [6, 0x3F]];1477        break;1478      case 3:1479        lines = [[-256, 8, 8, 0xFE], [0, 1, 0, 0x0], [1, 2, 0, 0x2], [2, 3, 0, 0x6], [3, 4, 3, 0xE], [11, 5, 6, 0x1E], [-257, 8, 32, 0xFF, 'lower'], [75, 7, 32, 0x7E], [6, 0x3E]];1480        break;1481      case 4:1482        lines = [[1, 1, 0, 0x0], [2, 2, 0, 0x2], [3, 3, 0, 0x6], [4, 4, 3, 0xE], [12, 5, 6, 0x1E], [76, 5, 32, 0x1F]];1483        break;1484      case 5:1485        lines = [[-255, 7, 8, 0x7E], [1, 1, 0, 0x0], [2, 2, 0, 0x2], [3, 3, 0, 0x6], [4, 4, 3, 0xE], [12, 5, 6, 0x1E], [-256, 7, 32, 0x7F, 'lower'], [76, 6, 32, 0x3E]];1486        break;1487      case 6:1488        lines = [[-2048, 5, 10, 0x1C], [-1024, 4, 9, 0x8], [-512, 4, 8, 0x9], [-256, 4, 7, 0xA], [-128, 5, 6, 0x1D], [-64, 5, 5, 0x1E], [-32, 4, 5, 0xB], [0, 2, 7, 0x0], [128, 3, 7, 0x2], [256, 3, 8, 0x3], [512, 4, 9, 0xC], [1024, 4, 10, 0xD], [-2049, 6, 32, 0x3E, 'lower'], [2048, 6, 32, 0x3F]];1489        break;1490      case 7:1491        lines = [[-1024, 4, 9, 0x8], [-512, 3, 8, 0x0], [-256, 4, 7, 0x9], [-128, 5, 6, 0x1A], [-64, 5, 5, 0x1B], [-32, 4, 5, 0xA], [0, 4, 5, 0xB], [32, 5, 5, 0x1C], [64, 5, 6, 0x1D], [128, 4, 7, 0xC], [256, 3, 8, 0x1], [512, 3, 9, 0x2], [1024, 3, 10, 0x3], [-1025, 5, 32, 0x1E, 'lower'], [2048, 5, 32, 0x1F]];1492        break;1493      case 8:1494        lines = [[-15, 8, 3, 0xFC], [-7, 9, 1, 0x1FC], [-5, 8, 1, 0xFD], [-3, 9, 0, 0x1FD], [-2, 7, 0, 0x7C], [-1, 4, 0, 0xA], [0, 2, 1, 0x0], [2, 5, 0, 0x1A], [3, 6, 0, 0x3A], [4, 3, 4, 0x4], [20, 6, 1, 0x3B], [22, 4, 4, 0xB], [38, 4, 5, 0xC], [70, 5, 6, 0x1B], [134, 5, 7, 0x1C], [262, 6, 7, 0x3C], [390, 7, 8, 0x7D], [646, 6, 10, 0x3D], [-16, 9, 32, 0x1FE, 'lower'], [1670, 9, 32, 0x1FF], [2, 0x1]];1495        break;1496      case 9:1497        lines = [[-31, 8, 4, 0xFC], [-15, 9, 2, 0x1FC], [-11, 8, 2, 0xFD], [-7, 9, 1, 0x1FD], [-5, 7, 1, 0x7C], [-3, 4, 1, 0xA], [-1, 3, 1, 0x2], [1, 3, 1, 0x3], [3, 5, 1, 0x1A], [5, 6, 1, 0x3A], [7, 3, 5, 0x4], [39, 6, 2, 0x3B], [43, 4, 5, 0xB], [75, 4, 6, 0xC], [139, 5, 7, 0x1B], [267, 5, 8, 0x1C], [523, 6, 8, 0x3C], [779, 7, 9, 0x7D], [1291, 6, 11, 0x3D], [-32, 9, 32, 0x1FE, 'lower'], [3339, 9, 32, 0x1FF], [2, 0x0]];1498        break;1499      case 10:1500        lines = [[-21, 7, 4, 0x7A], [-5, 8, 0, 0xFC], [-4, 7, 0, 0x7B], [-3, 5, 0, 0x18], [-2, 2, 2, 0x0], [2, 5, 0, 0x19], [3, 6, 0, 0x36], [4, 7, 0, 0x7C], [5, 8, 0, 0xFD], [6, 2, 6, 0x1], [70, 5, 5, 0x1A], [102, 6, 5, 0x37], [134, 6, 6, 0x38], [198, 6, 7, 0x39], [326, 6, 8, 0x3A], [582, 6, 9, 0x3B], [1094, 6, 10, 0x3C], [2118, 7, 11, 0x7D], [-22, 8, 32, 0xFE, 'lower'], [4166, 8, 32, 0xFF], [2, 0x2]];1501        break;1502      case 11:1503        lines = [[1, 1, 0, 0x0], [2, 2, 1, 0x2], [4, 4, 0, 0xC], [5, 4, 1, 0xD], [7, 5, 1, 0x1C], [9, 5, 2, 0x1D], [13, 6, 2, 0x3C], [17, 7, 2, 0x7A], [21, 7, 3, 0x7B], [29, 7, 4, 0x7C], [45, 7, 5, 0x7D], [77, 7, 6, 0x7E], [141, 7, 32, 0x7F]];1504        break;1505      case 12:1506        lines = [[1, 1, 0, 0x0], [2, 2, 0, 0x2], [3, 3, 1, 0x6], [5, 5, 0, 0x1C], [6, 5, 1, 0x1D], [8, 6, 1, 0x3C], [10, 7, 0, 0x7A], [11, 7, 1, 0x7B], [13, 7, 2, 0x7C], [17, 7, 3, 0x7D], [25, 7, 4, 0x7E], [41, 8, 5, 0xFE], [73, 8, 32, 0xFF]];1507        break;1508      case 13:1509        lines = [[1, 1, 0, 0x0], [2, 3, 0, 0x4], [3, 4, 0, 0xC], [4, 5, 0, 0x1C], [5, 4, 1, 0xD], [7, 3, 3, 0x5], [15, 6, 1, 0x3A], [17, 6, 2, 0x3B], [21, 6, 3, 0x3C], [29, 6, 4, 0x3D], [45, 6, 5, 0x3E], [77, 7, 6, 0x7E], [141, 7, 32, 0x7F]];1510        break;1511      case 14:1512        lines = [[-2, 3, 0, 0x4], [-1, 3, 0, 0x5], [0, 1, 0, 0x0], [1, 3, 0, 0x6], [2, 3, 0, 0x7]];1513        break;1514      case 15:1515        lines = [[-24, 7, 4, 0x7C], [-8, 6, 2, 0x3C], [-4, 5, 1, 0x1C], [-2, 4, 0, 0xC], [-1, 3, 0, 0x4], [0, 1, 0, 0x0], [1, 3, 0, 0x5], [2, 4, 0, 0xD], [3, 5, 1, 0x1D], [5, 6, 2, 0x3D], [9, 7, 4, 0x7D], [-25, 7, 32, 0x7E, 'lower'], [25, 7, 32, 0x7F]];1516        break;1517      default:1518        throw new Jbig2Error('standard table B.' + number + ' does not exist');1519    }1520    var length = lines.length,1521        i = void 0;1522    for (i = 0; i < length; i++) {1523      lines[i] = new HuffmanLine(lines[i]);1524    }1525    table = new HuffmanTable(lines, true);1526    standardTablesCache[number] = table;1527    return table;1528  }1529  function Reader(data, start, end) {1530    this.data = data;1531    this.start = start;1532    this.end = end;1533    this.position = start;1534    this.shift = -1;1535    this.currentByte = 0;1536  }1537  Reader.prototype = {1538    readBit: function readBit() {1539      if (this.shift < 0) {1540        if (this.position >= this.end) {1541          throw new Jbig2Error('end of data while reading bit');1542        }1543        this.currentByte = this.data[this.position++];1544        this.shift = 7;1545      }1546      var bit = this.currentByte >> this.shift & 1;1547      this.shift--;1548      return bit;1549    },1550    readBits: function readBits(numBits) {1551      var result = 0,1552          i = void 0;1553      for (i = numBits - 1; i >= 0; i--) {1554        result |= this.readBit() << i;1555      }1556      return result;1557    },1558    byteAlign: function byteAlign() {1559      this.shift = -1;1560    },1561    next: function next() {1562      if (this.position >= this.end) {1563        return -1;1564      }1565      return this.data[this.position++];1566    }1567  };1568  function getCustomHuffmanTable(index, referredTo, customTables) {1569    var currentIndex = 0,1570        i = void 0,1571        ii = referredTo.length,1572        table = void 0;1573    for (i = 0; i < ii; i++) {1574      table = customTables[referredTo[i]];1575      if (table) {1576        if (index === currentIndex) {1577          return table;1578        }1579        currentIndex++;1580      }1581    }1582    throw new Jbig2Error('can\'t find custom Huffman table');1583  }1584  function getTextRegionHuffmanTables(textRegion, referredTo, customTables, numberOfSymbols, reader) {1585    var codes = [],1586        i = void 0,1587        codeLength = void 0;1588    for (i = 0; i <= 34; i++) {1589      codeLength = reader.readBits(4);1590      codes.push(new HuffmanLine([i, codeLength, 0, 0]));1591    }1592    var runCodesTable = new HuffmanTable(codes, false);1593    codes.length = 0;1594    for (i = 0; i < numberOfSymbols;) {1595      codeLength = runCodesTable.decode(reader);1596      if (codeLength >= 32) {1597        var repeatedLength = void 0,1598            numberOfRepeats = void 0,1599            j = void 0;1600        switch (codeLength) {1601          case 32:1602            if (i === 0) {1603              throw new Jbig2Error('no previous value in symbol ID table');1604            }1605            numberOfRepeats = reader.readBits(2) + 3;1606            repeatedLength = codes[i - 1].prefixLength;1607            break;1608          case 33:1609            numberOfRepeats = reader.readBits(3) + 3;1610            repeatedLength = 0;1611            break;1612          case 34:1613            numberOfRepeats = reader.readBits(7) + 11;1614            repeatedLength = 0;1615            break;1616          default:1617            throw new Jbig2Error('invalid code length in symbol ID table');1618        }1619        for (j = 0; j < numberOfRepeats; j++) {1620          codes.push(new HuffmanLine([i, repeatedLength, 0, 0]));1621          i++;1622        }1623      } else {1624        codes.push(new HuffmanLine([i, codeLength, 0, 0]));1625        i++;1626      }1627    }1628    reader.byteAlign();1629    var symbolIDTable = new HuffmanTable(codes, false);1630    var customIndex = 0,1631        tableFirstS = void 0,1632        tableDeltaS = void 0,1633        tableDeltaT = void 0;1634    switch (textRegion.huffmanFS) {1635      case 0:1636      case 1:1637        tableFirstS = getStandardTable(textRegion.huffmanFS + 6);1638        break;...

Using AI Code Generation

1var wptools = require('wptools');2var options = {3};4var w = wptools.page('Barack Obama', options);5w.get(function(err, page) {6  var huff = page.huff();7  huff.then(function(result) {8    console.log(result);9  });10});11### wptools.page(page, options)12- options: an object of options (optional)13### .get(callback)14### .huff(callback)

Using AI Code Generation

1const wptools = require('wptools');2const fs = require('fs');3var options = {4};5var text = fs.readFileSync('test.txt', 'utf8');6var result = wptools.HuffmanLine(text, options);7console.log(result);8## wptools.HuffmanLine(text, options)9## wptools.HuffmanLine.decode(code, options)10## wptools.HuffmanLine.compress(code, options)11## wptools.HuffmanLine.decompress(code, options)

Using AI Code Generation

1const wptools = require("wptools");2const fs = require("fs");3const query = process.argv[2];4const output = process.argv[3];5  .page(query)6  .then(page => page.huffmanLine())7  .then(res => fs.writeFileSync(output, res))8  .catch(err => console.log(err));9const wptools = require("wptools");10const fs = require("fs");11const query = process.argv[2];12const output = process.argv[3];13  .page(query)14  .then(page => page.huffmanLine())15  .then(res => fs.writeFileSync(output, res))16  .catch(err => console.log(err));17const wptools = require("wptools");18const fs = require("fs");19const query = process.argv[2];20const output = process.argv[3];21  .page(query)22  .then(page => page.images())23  .then(res => fs.writeFileSync(output, JSON.stringify(res)))24  .catch(err => console.log(err));25const wptools = require("wptools");26const fs = require("fs");27const query = process.argv[2];28const output = process.argv[3];29  .page(query)30  .then(page => page.infobox())31  .then(res => fs.writeFileSync(output, JSON.stringify(res)))32  .catch(err => console.log(err));33const wptools = require("wptools");34const fs = require("fs");35const query = process.argv[2];36const output = process.argv[3];37  .page(query)38  .then(page => page.infoboxes())39  .then(res => fs.writeFileSync(output, JSON.stringify(res)))40  .catch(err => console.log(err));

Using AI Code Generation

1var wptools = require('./wptools.js');2var fs = require('fs');3wptools.getWikipediaPage(wikipage, function (err, page) {4    if (err) {5        console.log("Error: " + err);6        return;7    }8    var line = wptools.HuffmanLine(page);9    console.log(line);10    fs.writeFile("out.txt", line, function (err) {11        if (err) {12            console.log(err);13        }14    });15});16### `wptools.getWikipediaPage(url, callback)`17### `wptools.HuffmanLine(page)`18### `wptools.HuffmanLineFromURL(url, callback)`

Using AI Code Generation

1var wptools = require('wptools');2var fs = require('fs');3var request = require('request');4var cheerio = require('cheerio');5var path = require('path');6var async = require('async');7var _ = require('lodash');8request(url, function(error, response, html){9	if(!error){10		var $ = cheerio.load(html);11		var cityLinks = $('table.wikitable.sortable tr td:nth-child(2) a');12		var cityLinksArray = [];13		cityLinks.each(function(i, elem){14			cityLinksArray.push($(this).attr('href'));15		});16		var cityLinksArray = cityLinksArray.slice(1, 10);17		var cityLinksArray = cityLinksArray.map(function(city){18		});19		async.eachSeries(cityLinksArray, function(url, callback){20			var city = url.split('/').pop();21			console.log(city);22			wptools.page(city)23				.get(function(err, page){24					var data = page.data;25					var text = data.text;26					var text = text.split('==Demographics==')[1];27					var text = text.split('==Economy==')[0];28					var text = text.split('==Geography==')[0];29					var text = text.split('==Government==')[0];30					var text = text.split('==History==')[0];31					var text = text.split('==Infrastructure==')[0];32					var text = text.split('==Media==')[0];33					var text = text.split('==Notable people==')[0];34					var text = text.split('==References==')[0];35					var text = text.split('==See also==')[0];36					var text = text.split('==Transportation==')[0];37					var text = text.split('==External links==')[0];38					var text = text.split('==Notes==')[0];39					var text = text.split('==Notes and references==')[0];40					var text = text.split('==References==')[0];

Using AI Code Generation

1const wptools = require('wptools');2const fs = require('fs');3const file = fs.readFileSync('test.txt', 'utf8');4const fileLines = file.split('\n');5const lines = fileLines.map(line => {6  const words = line.split(' ');7  return words.map(word => {8    return {9    };10  });11});12const tree = wptools.HuffmanLine(lines);13const svg = wptools.toSVG(tree, 500, 500, 1, 1, 0, 0, 0);14fs.writeFileSync('test.svg', svg);15### `wptools.HuffmanLine(lines, options)`

Using AI Code Generation

1var wptools = require('wptools');2wptools.page('Albert Einstein').infobox(function(err, info) {3    console.log(info);4});5var wptools = require('wptools');6wptools.page('Albert Einstein').infobox(function(err, info) {7    console.log(info);8});9var wptools = require('wptools');10wptools.page('Albert Einstein').infobox(function(err, info) {11    console.log(info);12});13var wptools = require('wptools');14wptools.page('Albert Einstein').infobox(function(err, info) {15    console.log(info);16});17var wptools = require('wptools');18wptools.page('Albert Einstein').infobox(function(err, info) {19    console.log(info);20});21var wptools = require('wptools');22wptools.page('Albert Einstein').infobox(function(err, info) {23    console.log(info);24});25var wptools = require('wptools');26wptools.page('Albert Einstein').infobox(function(err, info) {27    console.log(info);28});29var wptools = require('wptools');30wptools.page('Albert Einstein').infobox(function(err, info) {31    console.log(info);32});33var wptools = require('wptools');34wptools.page('Albert Einstein').infobox(function(err, info) {35    console.log(info);36});37var wptools = require('wptools');38wptools.page('Albert Einstein').infobox(function

Using AI Code Generation

1var wptool = require('./wptool.js');2var fs = require('fs');3var test = new wptool();4var test2 = new wptool();5var testString = 'Hello World';6var testString2 = 'Hello World';7var encodedString = test.HuffmanLine(testString);8var encodedString2 = test2.HuffmanLine(testString2);9var decodedString = test.HuffmanLine(encodedString);10var decodedString2 = test2.HuffmanLine(encodedString2);11console.log('Original String: ' + testString);12console.log('Encoded String: ' + encodedString);13console.log('Decoded String: ' + decodedString);14console.log('Original String: ' + testString2);15console.log('Encoded String: ' + encodedString2);16console.log('Decoded String: ' + decodedString2);17fs.writeFile('test.txt', encodedString, function(err) {18    if (err) {19        return console.log(err);20    }21    console.log('The file was saved!');22});23var data = fs.readFileSync('test.txt', 'utf8');24var decodedFileString = test.HuffmanLine(data);25console.log('Decoded File String: ' + decodedFileString);

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