Method compress

src/3rdparty/vector_blf/src/Vector/BLF/LogContainer.cpp:94–123

}

void LogContainer::compress(const uint16_t compressionMethod, const int compressionLevel) {
    this->compressionMethod = compressionMethod;

    switch (compressionMethod) {
    case 0: /* no compression */
        compressedFile = uncompressedFile;
        compressedFileSize = uncompressedFileSize;
        break;

    case 2: { /* zlib compress */
        /* deflate/compress data */
        uLong compressedBufferSize = compressBound(uncompressedFileSize);
        compressedFile.resize(compressedBufferSize); // extend
        int retVal = ::compress2(
                         reinterpret_cast<Byte *>(compressedFile.data()),
                         &compressedBufferSize,
                         reinterpret_cast<Byte *>(uncompressedFile.data()),
                         uncompressedFileSize,
                         compressionLevel);
        if (retVal != Z_OK)
            throw Exception("File::uncompressedFile2CompressedFile(): compress2 error");
        compressedFileSize = static_cast<uint32_t>(compressedBufferSize);
        compressedFile.resize(compressedFileSize); // shrink
    }
    break;

    default:
        throw Exception("LogContainer::compress(): unknown compression method");
    }
}

}
}