Function reader_cleanup

gpcontrib/gpcloud/src/gpreader.cpp:152–174

invoked by s3_import(), need to be exception safe

// invoked by s3_import(), need to be exception safe
bool reader_cleanup(GPReader** reader) {
    bool result = true;
    try {
        if (*reader) {
            (*reader)->close();
            delete *reader;
            *reader = NULL;
        } else {
            result = false;
        }
    } catch (S3Exception& e) {
        s3extErrorMessage =
            "reader_cleanup caught a " + e.getType() + " exception: " + e.getFullMessage();
        S3ERROR("reader_cleanup caught %s: %s", e.getType().c_str(), s3extErrorMessage.c_str());
        result = false;
    } catch (...) {
        S3ERROR("Caught an unexpected exception.");
        s3extErrorMessage = "Caught an unexpected exception.";
        result = false;
    }

    return result;
}