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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 | 7x 7x 7x 787x 2x 7x 97x 5x 7x 471x 471x 471x 527513x 527513x 527503x 10x 2x 8x 2x 6x 4x 2x 471x 7x | "use strict";
/*! Copyright (c) 2021 Siemens AG. Licensed under the MIT License. */
Object.defineProperty(exports, "__esModule", { value: true });
exports.getUtf8BytesCount = exports.assertMqttTopicUtf8Count = exports.assertMqttTopicLength = void 0;
const MAX_MQTT_TOPIC_UTF8_COUNT = 65535;
function assertMqttTopicLength(mqttTopic) {
if (mqttTopic.length * 4 > MAX_MQTT_TOPIC_UTF8_COUNT) {
assertMqttTopicUtf8Count(getUtf8BytesCount(mqttTopic));
}
}
exports.assertMqttTopicLength = assertMqttTopicLength;
function assertMqttTopicUtf8Count(utf8Count) {
if (utf8Count > MAX_MQTT_TOPIC_UTF8_COUNT) {
throw new Error(`MQTT topic exceeds maximum allowed UTF-8 byte length`);
}
}
exports.assertMqttTopicUtf8Count = assertMqttTopicUtf8Count;
function getUtf8BytesCount(str) {
let count = 0;
const strLen = str.length;
for (let i = 0; i < strLen; i++) {
const code = str.charCodeAt(i);
if (code <= 0x007F) {
count++;
}
else if (code <= 0x07FF) {
count += 2;
}
else if (code <= 0xD7FF) {
count += 3;
}
else if (code <= 0xDFFF) {
count += 2;
}
else {
count += 3;
}
}
return count;
}
exports.getUtf8BytesCount = getUtf8BytesCount;
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