Function luaL_pushresult

third-party/lua-5.5.0/src/lauxlib.c:611–632

LUALIB_API void luaL_pushresult (luaL_Buffer *B) {
  lua_State *L = B->L;
  checkbufferlevel(B, -1);
  if (!buffonstack(B))  /* using static buffer? */
    lua_pushlstring(L, B->b, B->n);  /* save result as regular string */
  else {  /* reuse buffer already allocated */
    UBox *box = (UBox *)lua_touserdata(L, -1);
    void *ud;
    lua_Alloc allocf = lua_getallocf(L, &ud);  /* function to free buffer */
    size_t len = B->n;  /* final string length */
    char *s;
    resizebox(L, -1, len + 1);  /* adjust box size to content size */
    s = (char*)box->box;  /* final buffer address */
    s[len] = '\0';  /* add ending zero */
    /* clear box, as Lua will take control of the buffer */
    box->bsize = 0;  box->box = NULL;
    lua_pushexternalstring(L, s, len, allocf, ud);
    lua_closeslot(L, -2);  /* close the box */
    lua_gc(L, LUA_GCSTEP, len);
  }
  lua_remove(L, -2);  /* remove box or placeholder from the stack */
}


LUALIB_API void luaL_pushresultsize (luaL_Buffer *B, size_t sz) {