54 lines
1.2 KiB
JavaScript
54 lines
1.2 KiB
JavaScript
/**
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* @author gchq77703 []
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* @copyright Crown Copyright 2018
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* @license Apache-2.0
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*/
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import Operation from "../Operation";
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import geohash from "ngeohash";
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/**
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* To Geohash operation
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*/
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class ToGeohash extends Operation {
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/**
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* ToGeohash constructor
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*/
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constructor() {
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super();
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this.name = "To Geohash";
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this.module = "Hashing";
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this.description = "Converts Lat/Long coordinates into a Geohash string. For example, <code>37.8324,112.5584</code> becomes <code>ww8p1r4t8</code>.";
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this.infoURL = "https://wikipedia.org/wiki/Geohash";
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this.inputType = "string";
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this.outputType = "string";
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this.args = [
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{
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name: "Precision",
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type: "number",
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value: 9
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}
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];
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}
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/**
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* @param {string} input
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* @param {Object[]} args
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* @returns {string}
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*/
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run(input, args) {
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const [precision] = args;
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return input.split("\n").map(line => {
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line = line.replace(/ /g, "");
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if (line === "") return "";
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return geohash.encode(...line.split(",").map(num => parseFloat(num)), precision);
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}).join("\n");
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}
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}
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export default ToGeohash;
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