Method loadPackage

packages/fairygui/src/package/UIPackage.ts:270–510

* Load package from buffer * 从缓冲区加载包

(buffer: ByteBuffer)

     * 从缓冲区加载包
     */
    private loadPackage(buffer: ByteBuffer): void {
        if (buffer.getUint32() !== PACKAGE_MAGIC) {
            throw new Error('FairyGUI: invalid package format in \'' + this._resKey + '\'');
        }

        buffer.version = buffer.getInt32();
        const compressed = buffer.readBool();
        this.id = buffer.readUTFString();
        this.name = buffer.readUTFString();
        buffer.skip(20);

        // Handle compressed data
        if (compressed) {
            // Note: Compression requires pako or similar library
            // For now, we'll throw an error if the package is compressed
            throw new Error('FairyGUI: compressed packages are not supported yet');
        }

        const ver2 = buffer.version >= 2;
        const indexTablePos = buffer.pos;

        // Read string table
        buffer.seek(indexTablePos, 4);
        const strCount = buffer.getInt32();
        const stringTable: string[] = [];
        for (let i = 0; i < strCount; i++) {
            stringTable[i] = buffer.readUTFString();
        }
        buffer.stringTable = stringTable;

        // Read custom strings (version 2+)
        if (buffer.seek(indexTablePos, 5)) {
            const customCount = buffer.readInt32();
            for (let i = 0; i < customCount; i++) {
                const index = buffer.readUint16();
                const len = buffer.readInt32();
                stringTable[index] = buffer.getCustomString(len);
            }
        }

        // Read dependencies
        buffer.seek(indexTablePos, 0);
        const depCount = buffer.getInt16();
        for (let i = 0; i < depCount; i++) {
            this._dependencies.push({
                id: buffer.readS(),
                name: buffer.readS()
            });
        }

        // Read branches (version 2+)
        let branchIncluded = false;
        if (ver2) {
            const branchCount = buffer.getInt16();
            if (branchCount > 0) {
                this._branches = buffer.readSArray(branchCount);
                if (UIPackage._branch) {
                    this._branchIndex = this._branches.indexOf(UIPackage._branch);