Stefan Hacker
60 lines
1.9 KiB
JavaScript
60 lines
1.9 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.parseByteMap = void 0;
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function parseByteMap(stream, map, elements, start = null, length = null) {
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if (start === null) {
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start = 0;
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}
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if (start > (stream.length - 1)) {
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return [];
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}
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if (length === null) {
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length = stream.length - start;
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}
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if (length > (stream.length - start)) {
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length = stream.length - start;
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}
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let dataView;
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if ((start == 0) && (length == stream.length)) {
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dataView = stream.view;
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}
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else {
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dataView = new Uint8Array(stream.buffer, start, length);
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}
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const resultArray = new Array(elements);
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let elementsCount = 0;
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let count = 0;
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const mapLength = map.length;
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while (count < length) {
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let structureLength = 0;
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resultArray[elementsCount] = {};
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for (let i = 0; i < mapLength; i++) {
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if (map[i].maxlength == 0) {
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if ("defaultValue" in map[i]) {
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(resultArray[elementsCount])[map[i].name] = map[i].defaultValue;
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}
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continue;
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}
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const array = new Uint8Array(map[i].maxlength);
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for (let j = 0; j < map[i].maxlength; j++) {
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array[j] = dataView[count++];
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}
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const result = (map[i].func)(array);
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if (result.status == (-1)) {
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if (resultArray.length == 1) {
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return [];
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}
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return resultArray.slice(0, resultArray.length - 1);
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}
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if (map[i].type != "check") {
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(resultArray[elementsCount])[map[i].name] = result.value;
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}
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count -= (map[i].maxlength - result.length);
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structureLength += result.length;
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}
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(resultArray[elementsCount++]).structureLength = structureLength;
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}
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return resultArray;
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}
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exports.parseByteMap = parseByteMap;
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