sms-counter-npm/dist/SmsCounter.js

Character counter for SMS messages.

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const gsm7bitChars = `@£$¥èéùìòÇ\\nØø\\rÅåΔ_ΦΓΛΩΠΨΣΘΞÆæßÉ !\\\"#¤%&'()*+,-./0123456789:;<=>?¡ABCDEFGHIJKLMNOPQRSTUVWXYZÄÖÑܧ¿abcdefghijklmnopqrstuvwxyzäöñüà`;
const gsm7bitExChar = `\\^{}\\\\\\[~\\]|€`;
const gsm7bitRegExp = RegExp(`^[${gsm7bitChars}]*$`);
const gsm7bitExRegExp = RegExp(`^[${gsm7bitChars + gsm7bitExChar}]*$`);
const gsm7bitExOnlyRegExp = RegExp(`^[\\${gsm7bitExChar}]*$`);
function detectEncoding(text) {
    switch (false) {
        case text.match(gsm7bitRegExp) === null:
            return exports.GSM_7BIT;
        case text.match(gsm7bitExRegExp) === null:
            return exports.GSM_7BIT_EX;
        default:
            return exports.UTF16;
    }
}
function countGsm7bitEx(text) {
    const results = [];
    for (const char of text) {
        if (char.match(gsm7bitExOnlyRegExp) !== null) {
            results.push(char);
        }
    }
    return results.length;
}
exports.GSM_7BIT = 'GSM_7BIT';
exports.GSM_7BIT_EX = 'GSM_7BIT_EX';
exports.UTF16 = 'UTF16';
exports.messageLength = {
    GSM_7BIT: 160,
    GSM_7BIT_EX: 160,
    UTF16: 70,
};
exports.multiMessageLength = {
    GSM_7BIT: 153,
    GSM_7BIT_EX: 153,
    UTF16: 67,
};
function count(text) {
    const encoding = detectEncoding(text);
    let length = text.length;
    if (encoding === exports.GSM_7BIT_EX) {
        length += countGsm7bitEx(text);
    }
    let perMessage = exports.messageLength[encoding];
    if (length > perMessage) {
        perMessage = exports.multiMessageLength[encoding];
    }
    const messages = Math.ceil(length / perMessage);
    let remaining = (perMessage * messages) - length;
    if (remaining === 0 && messages === 0) {
        remaining = perMessage;
    }
    return { encoding, length, per_message: perMessage, remaining, messages };
}
exports.count = count;
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