char zipped[100000];

char unzipped[100000];

HZIP hz = OpenZip(zipped, sizeof zipped, "");
            char buf[1024]; ZRESULT zr = ZR_MORE; unsigned long totsize = 0;
            while (zr == ZR_MORE)
            {
                ZIPENTRY ze; GetZipItem(hz, 0, &ze);
                zr = UnzipItem(hz, 0, unzipped, sizeof unzipped);
                unsigned long bufsize = 1024; if (zr == ZR_OK) bufsize = ze.unc_size - totsize;
                    totsize += bufsize;
            }
            CloseZip(hz);