@halsystems/red-bacnet
Version:
NodeRED BACnet IP client
47 lines (46 loc) • 1.77 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", { value: true });
exports.decode = exports.encode = void 0;
const baAsn1 = require("../asn1");
const encode = (buffer, timeDuration, enableDisable, password) => {
if (timeDuration > 0) {
baAsn1.encodeContextUnsigned(buffer, 0, timeDuration);
}
baAsn1.encodeContextEnumerated(buffer, 1, enableDisable);
if (password && password !== '') {
baAsn1.encodeContextCharacterString(buffer, 2, password);
}
};
exports.encode = encode;
const decode = (buffer, offset, apduLen) => {
let len = 0;
const value = {};
let decodedValue;
let result;
if (baAsn1.decodeIsContextTag(buffer, offset + len, 0)) {
result = baAsn1.decodeTagNumberAndValue(buffer, offset + len);
len += result.len;
decodedValue = baAsn1.decodeUnsigned(buffer, offset + len, result.value);
value.timeDuration = decodedValue.value;
len += decodedValue.len;
}
if (!baAsn1.decodeIsContextTag(buffer, offset + len, 1))
return;
result = baAsn1.decodeTagNumberAndValue(buffer, offset + len);
len += result.len;
decodedValue = baAsn1.decodeEnumerated(buffer, offset + len, result.value);
value.enableDisable = decodedValue.value;
len += decodedValue.len;
if (len < apduLen) {
if (!baAsn1.decodeIsContextTag(buffer, offset + len, 2))
return;
result = baAsn1.decodeTagNumberAndValue(buffer, offset + len);
len += result.len;
decodedValue = baAsn1.decodeCharacterString(buffer, offset + len, apduLen - (offset + len), result.value);
value.password = decodedValue.value;
len += decodedValue.len;
}
value.len = len;
return value;
};
exports.decode = decode;