Function: composeAstmFrames()

composeAstmFrames(records, options?): Uint8Array

Frame reassembled record bytes into a spec-clean ASTM/CLSI-LIS01 byte stream - the inverse of decodeAstmFrames.

Each record is split at 240 text bytes into ETB-closed intermediate frames and a final ETX frame; frame numbers run 1, 2, … 7, 0, 1 … continuously across the whole stream; every frame's modulo-256 checksum is computed and emitted uppercase.

Parameters

records

readonly (string | Uint8Array<ArrayBufferLike>)[]

The reassembled record byte-strings (Uint8Array or latin1 string), one entry per complete record.

options?

ComposeFramesOptions = {}

Encode options.

Returns

Uint8Array

The framed byte stream.

Throws

AstmFrameEncodeError when the list is empty or a record has no bytes.

Example

import { composeAstmFrames, decodeAstmFrames } from "@cosyte/astm";
const records = [new TextEncoder().encode("H|\\^&\r"), new TextEncoder().encode("L|1\r")];
const bytes = composeAstmFrames(records);
decodeAstmFrames(bytes).records.length; // 2