Function verifyGZIPHeader

src/common/file_system/gzip_file_system.cpp:42–55

};

static void verifyGZIPHeader(const uint8_t gzip_hdr[], idx_t read_count) {
    if (read_count != GZipFileSystem::GZIP_HEADER_MINSIZE) {
        throw IOException("Input is not a GZIP stream.");
    }
    if (gzip_hdr[0] != 0x1F || gzip_hdr[1] != 0x8B) {
        throw IOException("Input is not a GZIP stream.");
    }
    if (gzip_hdr[2] != GZipFileSystem::GZIP_COMPRESSION_DEFLATE) {
        throw IOException("Unsupported GZIP compression method.");
    }
    if (gzip_hdr[3] & GZipFileSystem::GZIP_FLAG_UNSUPPORTED) {
        throw IOException("Unsupported GZIP archive.");
    }
}

void MiniZStreamWrapper::initialize(CompressedFileInfo& fileInfo) {
    close();