Method append_column

tools/cdb2sql/cdb2sql.cpp:1199–1355

}

int Result_buffer::append_column(cdb2_hndl_tp *hndl, int col) {
    std::string typeStr;
    std::string column;
    char buffer[512];
    void *val;

    val = cdb2_column_value(hndl, col);

    if (val == NULL) {
        if (printmode & DISP_COLTYPE) {
            typeStr = "NULL";
        }
        column = "NULL";
    } else {
        int type = cdb2_column_type(hndl, col);

        if (printmode & DISP_COLTYPE) {
            if (type >= MIN_COL_TYPE_NAME && type <= MAX_COL_TYPE_NAME) {
                typeStr = col_type_names[type];
            } else {
                typeStr = "UNKNOWN";
            }
        }

        switch (type) {
        case CDB2_INTEGER:
            column = std::to_string(*(long long *)val);
            break;
        case CDB2_REAL: {
            int len =
                snprintf(buffer, sizeof(buffer), doublefmt, *(double *)val);
            assert(len < sizeof(buffer));
            column = buffer;
            break;
        }
        case CDB2_CSTRING: {
            char *c = (char *)val;
            column += "'";

            while (*c) {
                if (*c == '\'')
                    column += "''";
                else
                    column += *c;
                c++;
            }
            column += "'";
            break;
        }
        case CDB2_BLOB: {
            int len = cdb2_column_size(cdb2h, col);

            if (string_blobs) {
                char *c = (char *)val;
                column += '\'';
                while (len > 0) {
                    if (isprint(*c) || *c == '\n' || *c == '\t') {
                        column += *c;