int uv_read_start(uv_stream_t* handle, uv_alloc_cb alloc_cb,
uv_read_cb read_cb) {
int err;
if (handle->flags & UV_HANDLE_READING) {
return UV_EALREADY;
}
if (!(handle->flags & UV_HANDLE_READABLE)) {
return UV_ENOTCONN;
}
err = ERROR_INVALID_PARAMETER;
switch (handle->type) {
case UV_TCP:
err = uv_tcp_read_start((uv_tcp_t*)handle, alloc_cb, read_cb);
break;
case UV_NAMED_PIPE:
err = uv_pipe_read_start((uv_pipe_t*)handle, alloc_cb, read_cb);
break;
case UV_TTY:
err = uv_tty_read_start((uv_tty_t*) handle, alloc_cb, read_cb);
break;
default:
assert(0);
}
return uv_translate_sys_error(err);
}
int uv_tty_set_mode(uv_tty_t* tty, int mode) {
DWORD flags = 0;
unsigned char was_reading;
uv_alloc_cb alloc_cb;
uv_read_cb read_cb;
if (!(tty->flags & UV_HANDLE_TTY_READABLE)) {
uv__set_artificial_error(tty->loop, UV_EINVAL);
return -1;
}
if (!!mode == !!(tty->flags & UV_HANDLE_TTY_RAW)) {
return 0;
}
if (tty->original_console_mode & ENABLE_QUICK_EDIT_MODE) {
flags = ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS;
}
if (mode) {
/* Raw input */
flags |= ENABLE_WINDOW_INPUT;
} else {
/* Line-buffered mode. */
flags |= ENABLE_ECHO_INPUT | ENABLE_INSERT_MODE | ENABLE_LINE_INPUT |
ENABLE_EXTENDED_FLAGS | ENABLE_PROCESSED_INPUT;
}
if (!SetConsoleMode(tty->handle, flags)) {
uv__set_sys_error(tty->loop, GetLastError());
return -1;
}
/* If currently reading, stop, and restart reading. */
if (tty->flags & UV_HANDLE_READING) {
was_reading = 1;
alloc_cb = tty->alloc_cb;
read_cb = tty->read_cb;
if (was_reading && uv_tty_read_stop(tty) != 0) {
return -1;
}
} else {
was_reading = 0;
}
/* Update flag. */
tty->flags &= ~UV_HANDLE_TTY_RAW;
tty->flags |= mode ? UV_HANDLE_TTY_RAW : 0;
/* If we just stopped reading, restart. */
if (was_reading && uv_tty_read_start(tty, alloc_cb, read_cb) != 0) {
return -1;
}
return 0;
}
int uv_read_start(uv_stream_t* handle, uv_alloc_cb alloc_cb,
uv_read_cb read_cb) {
if (handle->flags & UV_HANDLE_READING) {
uv__set_sys_error(handle->loop, UV_EALREADY);
return -1;
}
if (!(handle->flags & UV_HANDLE_READABLE)) {
uv__set_artificial_error(handle->loop, UV_ENOTCONN);
return -1;
}
switch (handle->type) {
case UV_TCP:
return uv_tcp_read_start((uv_tcp_t*)handle, alloc_cb, read_cb);
case UV_NAMED_PIPE:
return uv_pipe_read_start((uv_pipe_t*)handle, alloc_cb, read_cb);
case UV_TTY:
return uv_tty_read_start((uv_tty_t*) handle, alloc_cb, read_cb);
default:
assert(0);
return -1;
}
}
