static z_stream *lzstream_check(lua_State *L, int index, void *state)
{
z_stream *s = lzstream_get(L, index);
if ((state != LZANY && s->opaque != state) || s->opaque == LZNONE)
luaL_argerror(L, index, "attempt to use invalid zlib stream");
return s;
}
static lz_stream *lzstream_check(lua_State *L, int index, int state) {
lz_stream *s = lzstream_get(L, index);
if ((state != LZ_ANY && s->state != state) || s->state == LZ_NONE) {
luaL_argerror(L, index, "attempt to use invalid zlib stream");
}
return s;
}
static int lzstream_close(lua_State *L) {
lz_stream *s = lzstream_get(L, 1);
if (s->state == LZ_DEFLATE) {
lua_settop(L, 0);
lua_pushliteral(L, "");
return lzstream_docompress(L, s, 1, 1, Z_FINISH);
}
lzstream_cleanup(L, s);
lua_pushboolean(L, 1);
return 1;
}
static int lzstream_gc(lua_State *L)
{
z_stream *s = lzstream_get(L, 1);
lzstream_cleanup(L, s);
return 0;
}
