xcom2charpool/dist/ArrayBuffer/ArrayBufferReader.js

Library for reading, manipulating, and managing XCOM 2 character pool binary files, supporting both browser and Node.js environments.

"use strict";
var __classPrivateFieldSet = (this && this.__classPrivateFieldSet) || function (receiver, state, value, kind, f) {
    if (kind === "m") throw new TypeError("Private method is not writable");
    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a setter");
    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot write private member to an object whose class did not declare it");
    return (kind === "a" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;
};
var __classPrivateFieldGet = (this && this.__classPrivateFieldGet) || function (receiver, state, kind, f) {
    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a getter");
    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot read private member from an object whose class did not declare it");
    return kind === "m" ? f : kind === "a" ? f.call(receiver) : f ? f.value : state.get(receiver);
};
var _ArrayBufferReader_position, _ArrayBufferReader_length;
Object.defineProperty(exports, "__esModule", { value: true });
exports.ArrayBufferReader = void 0;
const FSting_1 = require("../UE/FSting");
/**
 * ArrayBuffer-backed Reader implementation for binary decoding.
 */
class ArrayBufferReader {
    constructor(source, position, length) {
        this.source = source;
        _ArrayBufferReader_position.set(this, 0);
        _ArrayBufferReader_length.set(this, void 0);
        if (typeof position === 'number') {
            __classPrivateFieldSet(this, _ArrayBufferReader_position, position, "f");
        }
        __classPrivateFieldSet(this, _ArrayBufferReader_length, typeof length === 'number' ? length : source.byteLength, "f");
    }
    get length() {
        return __classPrivateFieldGet(this, _ArrayBufferReader_length, "f");
    }
    get position() {
        return __classPrivateFieldGet(this, _ArrayBufferReader_position, "f");
    }
    uint32() {
        this.ensureAvailable(4, 'uint32');
        const value = this.source.getUint32(__classPrivateFieldGet(this, _ArrayBufferReader_position, "f"), true);
        __classPrivateFieldSet(this, _ArrayBufferReader_position, __classPrivateFieldGet(this, _ArrayBufferReader_position, "f") + 4, "f");
        return value;
    }
    int32() {
        this.ensureAvailable(4, 'int32');
        const value = this.source.getInt32(__classPrivateFieldGet(this, _ArrayBufferReader_position, "f"), true);
        __classPrivateFieldSet(this, _ArrayBufferReader_position, __classPrivateFieldGet(this, _ArrayBufferReader_position, "f") + 4, "f");
        return value;
    }
    byte() {
        this.ensureAvailable(1, 'byte');
        const value = this.source.getUint8(__classPrivateFieldGet(this, _ArrayBufferReader_position, "f"));
        __classPrivateFieldSet(this, _ArrayBufferReader_position, __classPrivateFieldGet(this, _ArrayBufferReader_position, "f") + 1, "f");
        return value;
    }
    padding() {
        const padding = this.uint32();
        if (padding) {
            throw new Error(`Expected empty padding, got ${padding.toString(16).padStart(8, '0')}`);
        }
    }
    subarray(length) {
        if (length < 0) {
            throw new Error('Attempt to subarray negative length');
        }
        this.ensureAvailable(length, 'subarray');
        const sub = new ArrayBufferReader(this.source, __classPrivateFieldGet(this, _ArrayBufferReader_position, "f"), __classPrivateFieldGet(this, _ArrayBufferReader_position, "f") + length);
        __classPrivateFieldSet(this, _ArrayBufferReader_position, __classPrivateFieldGet(this, _ArrayBufferReader_position, "f") + length, "f");
        return sub;
    }
    string() {
        return FSting_1.FSting.read(this);
    }
    bytes(length) {
        if (length < 0) {
            throw new Error('Attempt to read negative byte length');
        }
        this.ensureAvailable(length, 'bytes');
        const start = this.source.byteOffset + __classPrivateFieldGet(this, _ArrayBufferReader_position, "f");
        const bytes = new Uint8Array(this.source.buffer, start, length);
        __classPrivateFieldSet(this, _ArrayBufferReader_position, __classPrivateFieldGet(this, _ArrayBufferReader_position, "f") + length, "f");
        return bytes;
    }
    ensureAvailable(size, context) {
        if (__classPrivateFieldGet(this, _ArrayBufferReader_position, "f") + size > this.length) {
            throw new Error(`Attempt to read beyond buffer length in ${context}. Offset: ${__classPrivateFieldGet(this, _ArrayBufferReader_position, "f")}, requested: ${size}, remaining: ${this.length - __classPrivateFieldGet(this, _ArrayBufferReader_position, "f")}`);
        }
    }
}
exports.ArrayBufferReader = ArrayBufferReader;
_ArrayBufferReader_position = new WeakMap(), _ArrayBufferReader_length = new WeakMap();