rw-parser/src/utils/ByteStream.ts

Parses RenderWare DFF and TXD files into usable format!

export class ByteStream {
    private _cursor = 0;
    private _stream: Buffer;

    constructor(stream: Buffer) {
        this._stream = stream;
    }

    public readUint8() {
        const uint8 = this._stream.readUInt8(this._cursor);
        this._cursor++;
        return uint8;
    }

    public readUint16() {
        const uint16 = this._stream.readUInt16LE(this._cursor);
        this._cursor += 2;
        return uint16;
    }

    public readUint32() {
        const uint32 = this._stream.readUInt32LE(this._cursor);
        this._cursor += 4;
        return uint32;
    }

    public readInt32() {
        const int32 = this._stream.readInt32LE(this._cursor);
        this._cursor += 4;
        return int32;
    }

    public readFloat() {
        const float = this._stream.readFloatLE(this._cursor);
        this._cursor += 4;
        return float;
    }

    public readString(size: number) {
        const string = this._stream.toString('ascii', this._cursor, this._cursor + size);
        this._cursor += size;
        return string.split(/\0/g).shift() || '';
    }

    public read(size: number) {
        let data = new Uint8Array(size);
        for (let i = 0; i < size; i++) {
            data[i] = this.readUint8();
        }
        return data
    }

    public getSize() {
        return this._stream.byteLength;
    }

    public getPosition() {
        return this._cursor;
    }

    public setPosition(position: number) {
        this._cursor = position;
    }

    public skip(size: number) {
        this._cursor += size;
    }
}