UNPKG

node-nlp

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Library for NLU (Natural Language Understanding) done in Node.js

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<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>JSDoc: Source: xtables/xtable-utils.js</title> <script src="scripts/prettify/prettify.js"> </script> <script src="scripts/prettify/lang-css.js"> </script> <!--[if lt IE 9]> <script src="//html5shiv.googlecode.com/svn/trunk/html5.js"></script> <![endif]--> <link type="text/css" rel="stylesheet" href="styles/prettify-tomorrow.css"> <link type="text/css" rel="stylesheet" href="styles/jsdoc-default.css"> </head> <body> <div id="main"> <h1 class="page-title">Source: xtables/xtable-utils.js</h1> <section> <article> <pre class="prettyprint source linenums"><code>/* * Copyright (c) AXA Shared Services Spain S.A. * * Permission is hereby granted, free of charge, to any person obtaining * a copy of this software and associated documentation files (the * "Software"), to deal in the Software without restriction, including * without limitation the rights to use, copy, modify, merge, publish, * distribute, sublicense, and/or sell copies of the Software, and to * permit persons to whom the Software is furnished to do so, subject to * the following conditions: * * The above copyright notice and this permission notice shall be * included in all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */ class XTableUtils { /** * Indicates the index of a given alpha character. * @param {Character} c Character to be checked. * @returns Index of the character, -1 if is invalid. */ static alphaIndex(c) { return XTableUtils.alphachars.indexOf(c); } /** * Indicates if the given character is a valid Alpha. * @param {Character} c Character to be checked. * @returns {Boolean} True if the character is a valid alpha, false otherwise. */ static isAlphaChar(c) { return XTableUtils.alphaIndex(c) !== -1; } /** * Converts an alpha from excel to its number equivalent. * @param {String} alpha Alpha representation, example: 'AB'. Is the format * for naming columns in Excel. * @returns {Number} Alpha in number format. */ static alpha2number(alpha) { let result = 0; const alphalength = XTableUtils.alphachars.length; for (let i = 0, l = alpha.length; i &lt; l; i += 1) { if (i > 0) { result += 1; } const current = XTableUtils.alphaIndex(alpha[i]); if (current === -1) { throw new Error('Invalid alpha'); } result = result * alphalength + current; } return result; } /** * Given a decimal number, transform it to alpha format. * @param {Number} n Number in decimal format. * @return {String} Number in alpha format. */ static number2alpha(n) { if (!Number.isInteger(n)) { throw new Error('Invalid number'); } if (n &lt; 0) { throw new Error('Number cannot be negative'); } const alphalength = XTableUtils.alphachars.length; if (n &lt; alphalength) { return XTableUtils.alphachars[n]; } let result = ''; let x = n; while (x >= 0) { const currentMod = x % alphalength; const currentValue = XTableUtils.alphachars[currentMod]; result = currentValue + result; x = (x - currentMod) / alphalength - 1; } return result; } /** * Given an excel coordinate (example: 'BC123') transform it * to decimal coordinates. * @param {String} str Excel coordinate. * @returns {Object} Coordinate in format { column: ..., row: ...} */ static excel2coord(str) { const l = str.length; let index = 0; let alpha = ''; let numeric = ''; while (index &lt; l &amp;&amp; XTableUtils.isAlphaChar(str[index])) { alpha += str[index]; index += 1; } while (index &lt; l) { numeric += str[index]; index += 1; } return { column: XTableUtils.alpha2number(alpha), row: Number.parseInt(numeric, 10) - 1, }; } /** * Decimal coordinate to excel coordinate. * @param {Object} coord Decimal coordinate in format { column: ..., row: ...} * @returns {String} Excel coordinate. */ static coord2excel(coord) { return XTableUtils.number2alpha(coord.column) + (coord.row + 1); } /** * Transform an excel range to a decimal range. * @param {*} str */ static excel2range(str) { const index = str.indexOf(':'); if (index === -1) { throw new Error('Invalid excel range'); } return { topleft: XTableUtils.excel2coord(str.substring(0, index)), bottomright: XTableUtils.excel2coord( str.substring(index + 1, str.length) ), }; } } XTableUtils.alphachars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ'; module.exports = XTableUtils; </code></pre> </article> </section> </div> <nav> <h2><a href="index.html">Home</a></h2><h3>Classes</h3><ul><li><a href="BinaryNeuralNetworkClassifier.html">BinaryNeuralNetworkClassifier</a></li><li><a href="Classifier.html">Classifier</a></li><li><a href="ConversationContext.html">ConversationContext</a></li><li><a href="DutchStemmer.html">DutchStemmer</a></li><li><a href="EnglishStemmer.html">EnglishStemmer</a></li><li><a href="EnumNamedEntity.html">EnumNamedEntity</a></li><li><a href="Evaluator.html">Evaluator</a></li><li><a href="HungarianStemmer.html">HungarianStemmer</a></li><li><a href="ItalianStemmer.html">ItalianStemmer</a></li><li><a href="Language.html">Language</a></li><li><a href="LogisticRegressionClassifier.html">LogisticRegressionClassifier</a></li><li><a href="Matrix.html">Matrix</a></li><li><a href="MemoryConversationContext.html">MemoryConversationContext</a></li><li><a href="NamedEntity.html">NamedEntity</a></li><li><a href="NerManager.html">NerManager</a></li><li><a href="NlgManager.html">NlgManager</a></li><li><a href="NlpClassifier.html">NlpClassifier</a></li><li><a href="NlpManager.html">NlpManager</a></li><li><a href="NorwegianStemmer.html">NorwegianStemmer</a></li><li><a href="PortugueseStemmer.html">PortugueseStemmer</a></li><li><a href="Recognizer.html">Recognizer</a></li><li><a href="RegexNamedEntity.html">RegexNamedEntity</a></li><li><a href="RomanianStemmer.html">RomanianStemmer</a></li><li><a href="RussianStemmer.html">RussianStemmer</a></li><li><a href="SentimentAnalyzer.html">SentimentAnalyzer</a></li><li><a href="SentimentManager.html">SentimentManager</a></li><li><a href="SimilarSearch.html">SimilarSearch</a></li><li><a href="SlotManager.html">SlotManager</a></li><li><a href="StemmerJa.html">StemmerJa</a></li><li><a href="SwedishStemmer.html">SwedishStemmer</a></li><li><a href="Tokenizer.html">Tokenizer</a></li><li><a href="TrimNamedEntity.html">TrimNamedEntity</a></li><li><a href="TurkishStemmer.html">TurkishStemmer</a></li><li><a href="Vector.html">Vector</a></li><li><a href="XTable.html">XTable</a></li></ul><h3>Global</h3><ul><li><a href="global.html#endsinArr">endsinArr</a></li><li><a href="global.html#prelude">prelude</a></li><li><a href="global.html#regions">regions</a></li><li><a href="global.html#stem">stem</a></li><li><a href="global.html#stopwords">stopwords</a></li></ul> </nav> <br class="clear"> <footer> Documentation generated by <a href="https://github.com/jsdoc3/jsdoc">JSDoc 3.5.5</a> on Sat Oct 13 2018 19:14:51 GMT+0200 (CEST) </footer> <script> prettyPrint(); </script> <script src="scripts/linenumber.js"> </script> </body> </html>