Function inflateInit2_

zlib/inflate.c:144–185

(strm, windowBits, version, stream_size)

}

int ZEXPORT inflateInit2_(strm, windowBits, version, stream_size)
z_streamp strm;
int windowBits;
const char *version;
int stream_size;
{
    struct inflate_state FAR *state;

    if (version == Z_NULL || version[0] != ZLIB_VERSION[0] ||
        stream_size != (int)(sizeof(z_stream)))
        return Z_VERSION_ERROR;
    if (strm == Z_NULL) return Z_STREAM_ERROR;
    strm->msg = Z_NULL;                 /* in case we return an error */
    if (strm->zalloc == (alloc_func)0) {
        strm->zalloc = zcalloc;
        strm->opaque = (voidpf)0;
    }
    if (strm->zfree == (free_func)0) strm->zfree = zcfree;
    state = (struct inflate_state FAR *)
            ZALLOC(strm, 1, sizeof(struct inflate_state));
    if (state == Z_NULL) return Z_MEM_ERROR;
    Tracev((stderr, "inflate: allocated\n"));
    strm->state = (struct internal_state FAR *)state;
    if (windowBits < 0) {
        state->wrap = 0;
        windowBits = -windowBits;
    }
    else {
        state->wrap = (windowBits >> 4) + 1;
#ifdef GUNZIP
        if (windowBits < 48) windowBits &= 15;
#endif
    }
    if (windowBits < 8 || windowBits > 15) {
        ZFREE(strm, state);
        strm->state = Z_NULL;
        return Z_STREAM_ERROR;
    }
    state->wbits = (unsigned)windowBits;
    state->window = Z_NULL;
    return inflateReset(strm);
}

int ZEXPORT inflateInit_(strm, version, stream_size)
z_streamp strm;