Method InternReadFile

code/AssetLib/Assbin/AssbinLoader.cpp:686–746

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// -----------------------------------------------------------------------------------
void AssbinImporter::InternReadFile(const std::string &pFile, aiScene *pScene, IOSystem *pIOHandler) {
    IOStream *stream = pIOHandler->Open(pFile, "rb");
    if (nullptr == stream) {
        throw DeadlyImportError("ASSBIN: Could not open ", pFile);
    }

    // signature
    stream->Seek(44, aiOrigin_CUR);

    unsigned int versionMajor = Read<unsigned int>(stream);
    unsigned int versionMinor = Read<unsigned int>(stream);
    if (versionMinor != ASSBIN_VERSION_MINOR || versionMajor != ASSBIN_VERSION_MAJOR) {
        pIOHandler->Close(stream);
        throw DeadlyImportError("Invalid version, data format not compatible!");
    }

    /*unsigned int versionRevision =*/Read<unsigned int>(stream);
    /*unsigned int compileFlags =*/Read<unsigned int>(stream);

    shortened = Read<uint16_t>(stream) > 0;
    compressed = Read<uint16_t>(stream) > 0;

    if (shortened) {
        pIOHandler->Close(stream);
        throw DeadlyImportError("Shortened binaries are not supported!");
    }

    stream->Seek(256, aiOrigin_CUR); // original filename
    stream->Seek(128, aiOrigin_CUR); // options
    stream->Seek(64, aiOrigin_CUR); // padding

    if (compressed) {
        uLongf uncompressedSize = Read<uint32_t>(stream);
        uLongf compressedSize = static_cast<uLongf>(stream->FileSize() - stream->Tell());

        unsigned char *compressedData = new unsigned char[compressedSize];
        size_t len = stream->Read(compressedData, 1, compressedSize);
        ai_assert(len == compressedSize);

        unsigned char *uncompressedData = new unsigned char[uncompressedSize];

        int res = uncompress(uncompressedData, &uncompressedSize, compressedData, (uLong)len);
        if (res != Z_OK) {
            delete[] uncompressedData;
            delete[] compressedData;
            pIOHandler->Close(stream);
            throw DeadlyImportError("Zlib decompression failed.");
        }

        MemoryIOStream io(uncompressedData, uncompressedSize);

        ReadBinaryScene(&io, pScene);

        delete[] uncompressedData;
        delete[] compressedData;
    } else {
        ReadBinaryScene(stream, pScene);
    }