Borewit
46 lines
1.2 KiB
TypeScript
46 lines
1.2 KiB
TypeScript
import * as Token from 'token-types';
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import * as util from '../common/Util.js';
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import type { DataType } from './AsfObject.js';
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export type AttributeParser = (buf: Uint8Array) => boolean | string | number | bigint | Uint8Array;
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export function getParserForAttr(i: DataType): AttributeParser {
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return attributeParsers[i];
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}
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export function parseUnicodeAttr(uint8Array: Uint8Array): string {
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return util.stripNulls(util.decodeString(uint8Array, 'utf-16le'));
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}
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const attributeParsers: AttributeParser[] = [
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parseUnicodeAttr,
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parseByteArrayAttr,
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parseBoolAttr,
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parseDWordAttr,
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parseQWordAttr,
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parseWordAttr,
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parseByteArrayAttr
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];
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function parseByteArrayAttr(buf: Uint8Array): Uint8Array {
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return new Uint8Array(buf);
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}
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function parseBoolAttr(buf: Uint8Array, offset = 0): boolean {
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return parseWordAttr(buf, offset) === 1;
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}
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function parseDWordAttr(buf: Uint8Array, offset = 0): number {
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return Token.UINT32_LE.get(buf, offset);
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}
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function parseQWordAttr(buf: Uint8Array, offset = 0): bigint {
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return Token.UINT64_LE.get(buf, offset);
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}
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function parseWordAttr(buf: Uint8Array, offset = 0): number {
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return Token.UINT16_LE.get(buf, offset);
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}
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