Function gzwrite

freebsd/contrib/zstd/zlibWrapper/examples/minigzip.c:241–261

(gz, buf, len)

int gzwrite OF((gzFile, const void *, unsigned));

int gzwrite(gz, buf, len)
    gzFile gz;
    const void *buf;
    unsigned len;
{
    z_stream *strm;
    unsigned char out[BUFLEN];

    if (gz == NULL || !gz->write)
        return 0;
    strm = &(gz->strm);
    strm->next_in = (void *)buf;
    strm->avail_in = len;
    do {
        strm->next_out = out;
        strm->avail_out = BUFLEN;
        (void)deflate(strm, Z_NO_FLUSH);
        fwrite(out, 1, BUFLEN - strm->avail_out, gz->file);
    } while (strm->avail_out == 0);
    return len;
}

int gzread OF((gzFile, void *, unsigned));