41 lines
810 B
JavaScript
41 lines
810 B
JavaScript
"use strict";
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import fs from 'fs';
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/**
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* Represents a list of categories.
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*/
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class Categories {
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constructor(in_filename) {
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this.filename = in_filename;
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if(!fs.existsSync(this.filename))
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throw new Error(`Error: No such file or directory '${this.filename}' (it should exist and have 1 category name per line).`);
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/**
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* A list of category names.
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* @type {string[]}
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*/
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this.values = fs.readFileSync(this.filename, "utf-8")
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.replace(/\r\n?/, "\n")
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.split("\n")
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.map((line) => line.trim())
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.filter((line) => line.length > 0);
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/**
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* The total number of categories.
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* @type {Number}
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*/
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this.count = this.values.length;
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}
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to_id(cat_name) {
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return this.values.indexOf(cat_name);
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}
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to_name(id) {
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return this.values[id];
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}
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}
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export default Categories;
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