@halsystems/red-bacnet/ext/node-bacstack/dist/lib/services/atomic-read-file.js

NodeRED BACnet IP client

'use strict';
Object.defineProperty(exports, "__esModule", { value: true });
exports.decodeAcknowledge = exports.encodeAcknowledge = exports.decode = exports.encode = void 0;
const baAsn1 = require("../asn1");
const baEnum = require("../enum");
const encode = (buffer, isStream, objectId, position, count) => {
    baAsn1.encodeApplicationObjectId(buffer, objectId.type, objectId.instance);
    if (isStream) {
        baAsn1.encodeOpeningTag(buffer, 0);
        baAsn1.encodeApplicationSigned(buffer, position);
        baAsn1.encodeApplicationUnsigned(buffer, count);
        baAsn1.encodeClosingTag(buffer, 0);
    }
    else {
        baAsn1.encodeOpeningTag(buffer, 1);
        baAsn1.encodeApplicationSigned(buffer, position);
        baAsn1.encodeApplicationUnsigned(buffer, count);
        baAsn1.encodeClosingTag(buffer, 1);
    }
};
exports.encode = encode;
const decode = (buffer, offset) => {
    let len = 0;
    let result;
    let decodedValue;
    let isStream = true;
    let objectId = {};
    let position = -1;
    let count = 0;
    result = baAsn1.decodeTagNumberAndValue(buffer, offset + len);
    len += result.len;
    if (result.tagNumber !== baEnum.ApplicationTags.OBJECTIDENTIFIER)
        return;
    decodedValue = baAsn1.decodeObjectId(buffer, offset + len);
    len += decodedValue.len;
    objectId = { type: decodedValue.objectType, instance: decodedValue.instance };
    if (baAsn1.decodeIsOpeningTagNumber(buffer, offset + len, 0)) {
        isStream = true;
        len++;
        result = baAsn1.decodeTagNumberAndValue(buffer, offset + len);
        len += result.len;
        if (result.tagNumber !== baEnum.ApplicationTags.SIGNED_INTEGER)
            return;
        decodedValue = baAsn1.decodeSigned(buffer, offset + len, result.value);
        len += decodedValue.len;
        position = decodedValue.value;
        result = baAsn1.decodeTagNumberAndValue(buffer, offset + len);
        len += result.len;
        if (result.tagNumber !== baEnum.ApplicationTags.UNSIGNED_INTEGER)
            return;
        decodedValue = baAsn1.decodeUnsigned(buffer, offset + len, result.value);
        len += decodedValue.len;
        count = decodedValue.value;
        if (!baAsn1.decodeIsClosingTagNumber(buffer, offset + len, 0))
            return;
        len++;
    }
    else if (baAsn1.decodeIsOpeningTagNumber(buffer, offset + len, 1)) {
        isStream = false;
        len++;
        result = baAsn1.decodeTagNumberAndValue(buffer, offset + len);
        len += result.len;
        if (result.tagNumber !== baEnum.ApplicationTags.SIGNED_INTEGER)
            return;
        decodedValue = baAsn1.decodeSigned(buffer, offset + len, result.value);
        len += decodedValue.len;
        position = decodedValue.value;
        result = baAsn1.decodeTagNumberAndValue(buffer, offset + len);
        len += result.len;
        if (result.tagNumber !== baEnum.ApplicationTags.UNSIGNED_INTEGER)
            return;
        decodedValue = baAsn1.decodeUnsigned(buffer, offset + len, result.value);
        len += decodedValue.len;
        count = decodedValue.value;
        if (!baAsn1.decodeIsClosingTagNumber(buffer, offset + len, 1))
            return;
        len++;
    }
    else {
        return;
    }
    return {
        len: len,
        isStream: isStream,
        objectId: objectId,
        position: position,
        count: count
    };
};
exports.decode = decode;
const encodeAcknowledge = (buffer, isStream, endOfFile, position, blockCount, blocks, counts) => {
    baAsn1.encodeApplicationBoolean(buffer, endOfFile);
    if (isStream) {
        baAsn1.encodeOpeningTag(buffer, 0);
        baAsn1.encodeApplicationSigned(buffer, position);
        baAsn1.encodeApplicationOctetString(buffer, blocks[0], 0, counts[0]);
        baAsn1.encodeClosingTag(buffer, 0);
    }
    else {
        baAsn1.encodeOpeningTag(buffer, 1);
        baAsn1.encodeApplicationSigned(buffer, position);
        baAsn1.encodeApplicationUnsigned(buffer, blockCount);
        for (let i = 0; i < blockCount; i++) {
            baAsn1.encodeApplicationOctetString(buffer, blocks[i], 0, counts[i]);
        }
        baAsn1.encodeClosingTag(buffer, 1);
    }
};
exports.encodeAcknowledge = encodeAcknowledge;
const decodeAcknowledge = (buffer, offset) => {
    let len = 0;
    let result;
    let decodedValue;
    let isStream;
    let position;
    let targetBuffer;
    result = baAsn1.decodeTagNumberAndValue(buffer, offset + len);
    len += result.len;
    if (result.tagNumber !== baEnum.ApplicationTags.BOOLEAN)
        return;
    const endOfFile = result.value > 0;
    if (baAsn1.decodeIsOpeningTagNumber(buffer, offset + len, 0)) {
        isStream = true;
        len++;
        result = baAsn1.decodeTagNumberAndValue(buffer, offset + len);
        len += result.len;
        if (result.tagNumber !== baEnum.ApplicationTags.SIGNED_INTEGER)
            return;
        decodedValue = baAsn1.decodeSigned(buffer, offset + len, result.value);
        len += decodedValue.len;
        position = decodedValue.value;
        result = baAsn1.decodeTagNumberAndValue(buffer, offset + len);
        len += result.len;
        if (result.tagNumber !== baEnum.ApplicationTags.OCTET_STRING)
            return;
        targetBuffer = buffer.slice(offset + len, offset + len + result.value);
        len += result.value;
        if (!baAsn1.decodeIsClosingTagNumber(buffer, offset + len, 0))
            return;
        len++;
    }
    else if (baAsn1.decodeIsOpeningTagNumber(buffer, offset + len, 1)) {
        isStream = false;
        throw new Error('NotImplemented');
    }
    else {
        return;
    }
    return {
        len: len,
        endOfFile: endOfFile,
        isStream: isStream,
        position: position,
        buffer: targetBuffer
    };
};
exports.decodeAcknowledge = decodeAcknowledge;