YAZ_EXPORT void wrbuf_rewind(WRBUF b);
YAZ_EXPORT int wrbuf_grow(WRBUF b, int minsize);
YAZ_EXPORT int wrbuf_write(WRBUF b, const char *buf, int size);
YAZ_EXPORT void wrbuf_rewind(WRBUF b);
YAZ_EXPORT int wrbuf_grow(WRBUF b, int minsize);
YAZ_EXPORT int wrbuf_write(WRBUF b, const char *buf, int size);