Function buffer_meth_send

engine/script/src/luasocket/buffer.c:74–102

-------------------------------------------------------------------------*\ * object:send() interface \*-------------------------------------------------------------------------*/

* object:send() interface
\*-------------------------------------------------------------------------*/
int buffer_meth_send(lua_State *L, p_buffer buf) {
    int top = lua_gettop(L);
    int err = IO_DONE;
    size_t size = 0, sent = 0;
    const char *data = luaL_checklstring(L, 2, &size);
    long start = (long) luaL_optnumber(L, 3, 1);
    long end = (long) luaL_optnumber(L, 4, -1);
    timeout_markstart(buf->tm);
    if (start < 0) start = (long) (size+start+1);
    if (end < 0) end = (long) (size+end+1);
    if (start < 1) start = (long) 1;
    if (end > (long) size) end = (long) size;
    if (start <= end) err = sendraw(buf, data+start-1, end-start+1, &sent);
    /* check if there was an error */
    if (err != IO_DONE) {
        lua_pushnil(L);
        lua_pushstring(L, buf->io->error(buf->io->ctx, err)); 
        lua_pushnumber(L, (lua_Number) (sent+start-1));
    } else {
        lua_pushnumber(L, (lua_Number) (sent+start-1));
        lua_pushnil(L);
        lua_pushnil(L);
    }
#ifdef LUASOCKET_DEBUG
    /* push time elapsed during operation as the last return value */
    lua_pushnumber(L, timeout_gettime() - timeout_getstart(buf->tm));
#endif
    return lua_gettop(L) - top;
}

/*-------------------------------------------------------------------------*\
* object:receive() interface