@citrineos/util/dist/util/parser.js

The OCPP util module which supplies helpful utilities like cache and queue connectors, etc.

// SPDX-FileCopyrightText: 2025 Contributors to the CitrineOS Project
//
// SPDX-License-Identifier: Apache-2.0
/**
 * Calculate the size of a request.
 *
 * @param {object} request - The ocpp request.
 * @return {number} The size of the request (Bytes).
 */
export function getSizeOfRequest(request) {
    return new TextEncoder().encode(JSON.stringify(request)).length;
}
/**
 * Slice array into pieces according to the given size.
 *
 * @param {array} array - An array.
 * @param {number} size - The expected size of a batch.
 * @return {map} A map with index as key and batch as value. Index is the position of the 1st batch element in the given
 * array. Batch is a subarray of the given array.
 */
export function getBatches(array, size) {
    if (!Number.isInteger(size) || size <= 0) {
        size = array.length;
    }
    const batchMap = new Map();
    let lastIndex = 0;
    while (array.length > 0) {
        const batch = array.slice(0, size);
        batchMap.set(lastIndex, batch);
        lastIndex += batch.length;
        array = array.slice(size);
    }
    return batchMap;
}
/**
 * Get the number of fraction digits in a number, e.g, 1.23 -> 2
 *
 * @param num - The number to get the number of fraction digits
 * @returns The number of fraction digits
 */
export function getNumberOfFractionDigit(num) {
    const numString = num.toString();
    const match = numString.match(/\.(\d+)/);
    if (!match) {
        return 0;
    }
    else {
        return match[1].length;
    }
}
/**
 * Convert string to set. For example, 'a,b,c' -> new Set(['a', 'b', 'c'])
 *
 * @param input - The string to convert
 * @returns Set
 */
export function stringToSet(input) {
    return new Set(input.split(',').map((item) => item.trim()));
}
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