@ringring/gsm/dist/index.js

A utility library for short messages and mobile communication

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.unicodeReplace = exports.characterCount = exports.createParts = void 0;
const gsm = require("gsm");
const constants_1 = require("./constants");
/**
 * Create message terminated (MT) parts to be sent to SMPPP linkers
 *
 * @param body message as string
 * @param opts optional options (unicode: boolean)
 * @returns {string[]} array of strings
 *
 * @example
 * createParts('Hello World') // ['Hello World']
 */
function createParts(body, opts) {
    const parts = gsm(body);
    if (opts?.unicode && body.length > 70) {
        parts.sms_count = Math.ceil(body.length / 67);
        // eslint-disable-next-line no-plusplus
        for (let i = 0; i < parts.sms_count; i++) {
            parts.parts[i] = body.substring(i * 67, (i + 1) * 67);
        }
    }
    return parts.parts;
}
exports.createParts = createParts;
/**
 * Return the character length of given content
 *
 *
 * @see [String.length](https://mdn.io/Reference/Global_Objects/String/length)
 *
 * @example
 * characterCount('€') // 2 (GSM 03.38, 7bit)
 * characterCount('€', { unicode: true }) // 1 (UCS2,  unicode)
 *
 * @param content message content
 * @param opts.unicode boolean, if true, count as unicode instead of GSM 03.38
 * @param opts.unicode boolean, if true, count as unicode instead of GSM 03.38
 */
function characterCount(content, opts) {
    return content
        .split('')
        .map((char) => {
        const count = opts?.unicode ? 1 : constants_1.charset7bit[char] || 1;
        return count;
    })
        .reduce((acc, value) => acc + value, 0);
}
exports.characterCount = characterCount;
/**
 * Replace invalid unicode characters with sane equivalence or question mark (?)
 *
 * @example
 * // character with sane replacements
 * unicodeReplace('ýô') // 'yo'
 * // Invalid characters
 * unicodeReplace('A你Z') // 'A??Z'
 * // Valid characters
 * unicodeReplace('ΘΞÆæß') // 'ΘΞÆæß'
 *
 * @param content message content
 */
function unicodeReplace(content) {
    let parsed = content;
    const regex = /[^a-zA-Z' \d@£$¥èéùìòÇ\nØø\rÅåΔ_ΦΓΛΩΠΨΣΘΞÆæßÉ!"#¤%&()*+,\-./:;<=>?¡ÄÖÑܧ¿äöñüà\f^{}\\[~\]|€]/gm;
    Object.keys(constants_1.GSM_MAP).forEach((c) => {
        parsed = parsed.replaceAll(c, constants_1.GSM_MAP[c]);
    });
    parsed = parsed.replace(regex, '?');
    return parsed;
}
exports.unicodeReplace = unicodeReplace;
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