enum PgqEncode { TBUF_QUOTE_IDENT, TBUF_QUOTE_LITERAL, TBUF_QUOTE_URLENC, }; StringInfo pgq_init_varbuf(void); Datum pgq_finish_varbuf(StringInfo buf); bool pgq_strlist_contains(const char *liststr, const char *str); void pgq_encode_cstring(StringInfo tbuf, const char *str, enum PgqEncode encoding);