Function read_all

third-party/lua-5.4.6/src/liolib.c:543–553

static void read_all (lua_State *L, FILE *f) {
  size_t nr;
  luaL_Buffer b;
  luaL_buffinit(L, &b);
  do {  /* read file in chunks of LUAL_BUFFERSIZE bytes */
    char *p = luaL_prepbuffer(&b);
    nr = fread(p, sizeof(char), LUAL_BUFFERSIZE, f);
    luaL_addsize(&b, nr);
  } while (nr == LUAL_BUFFERSIZE);
  luaL_pushresult(&b);  /* close buffer */
}


static int read_chars (lua_State *L, FILE *f, size_t n) {