emberplus-connection
Version:
Javascript implementation of the Ember+ automation protocol
79 lines • 4.04 kB
JavaScript
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.decodeStreamDescription = void 0;
const tslib_1 = require("tslib");
const Ber = tslib_1.__importStar(require("../../../Ber"));
const StreamDescription_1 = require("../../../model/StreamDescription");
const constants_1 = require("../constants");
const DecodeResult_1 = require("./DecodeResult");
function decodeStreamDescription(reader, options = DecodeResult_1.defaultDecode) {
reader.readSequence(constants_1.StreamDescriptionBERID);
let format = null;
let offset = null;
const errors = [];
const endOffset = reader.offset + reader.length;
while (reader.offset < endOffset) {
const tag = reader.readSequence();
switch (tag) {
case Ber.CONTEXT(0):
format = (0, DecodeResult_1.appendErrors)(readStreamFormat(reader.readInt(), options), errors);
break;
case Ber.CONTEXT(1):
offset = reader.readInt();
break;
case 0:
break; // indefinite length
default:
(0, DecodeResult_1.unknownContext)(errors, 'decode stream description', tag, options);
(0, DecodeResult_1.skipNext)(reader);
break;
}
}
format = (0, DecodeResult_1.check)(format, 'decode stream description', 'format', StreamDescription_1.StreamFormat.UInt8, errors, options);
offset = (0, DecodeResult_1.check)(offset, 'decode stream description', 'offset', 0, errors, options);
return (0, DecodeResult_1.makeResult)(new StreamDescription_1.StreamDescriptionImpl(format, offset), errors);
}
exports.decodeStreamDescription = decodeStreamDescription;
function readStreamFormat(value, options = DecodeResult_1.defaultDecode) {
switch (value) {
case 0:
return (0, DecodeResult_1.makeResult)(StreamDescription_1.StreamFormat.UInt8);
case 2:
return (0, DecodeResult_1.makeResult)(StreamDescription_1.StreamFormat.UInt16BE);
case 3:
return (0, DecodeResult_1.makeResult)(StreamDescription_1.StreamFormat.UInt16LE);
case 4:
return (0, DecodeResult_1.makeResult)(StreamDescription_1.StreamFormat.UInt32BE);
case 5:
return (0, DecodeResult_1.makeResult)(StreamDescription_1.StreamFormat.UInt32LE);
case 6:
return (0, DecodeResult_1.makeResult)(StreamDescription_1.StreamFormat.UInt64BE);
case 7:
return (0, DecodeResult_1.makeResult)(StreamDescription_1.StreamFormat.UInt64LE);
case 8:
return (0, DecodeResult_1.makeResult)(StreamDescription_1.StreamFormat.Int8);
case 10:
return (0, DecodeResult_1.makeResult)(StreamDescription_1.StreamFormat.Int16BE);
case 11:
return (0, DecodeResult_1.makeResult)(StreamDescription_1.StreamFormat.Int16LE);
case 12:
return (0, DecodeResult_1.makeResult)(StreamDescription_1.StreamFormat.Int32BE);
case 13:
return (0, DecodeResult_1.makeResult)(StreamDescription_1.StreamFormat.Int32LE);
case 14:
return (0, DecodeResult_1.makeResult)(StreamDescription_1.StreamFormat.Int64BE);
case 15:
return (0, DecodeResult_1.makeResult)(StreamDescription_1.StreamFormat.Int64LE);
case 20:
return (0, DecodeResult_1.makeResult)(StreamDescription_1.StreamFormat.Float32BE);
case 21:
return (0, DecodeResult_1.makeResult)(StreamDescription_1.StreamFormat.Float32LE);
case 22:
return (0, DecodeResult_1.makeResult)(StreamDescription_1.StreamFormat.Float64BE);
case 23:
return (0, DecodeResult_1.makeResult)(StreamDescription_1.StreamFormat.Float64LE);
default:
return (0, DecodeResult_1.unexpected)([], 'read stream format', `unexpected stream format '${value}'`, StreamDescription_1.StreamFormat.UInt8, options);
}
}
//# sourceMappingURL=StreamDescription.js.map