2 This file is part of Smoothie (http://smoothieware.org/). The motion control part is heavily based on Grbl (https://github.com/simen/grbl).
3 Smoothie is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
4 Smoothie is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.
5 You should have received a copy of the GNU General Public License along with Smoothie. If not, see <http://www.gnu.org/licenses/>.
15 // This is a base class for all StreamOutput objects.
16 // StreamOutputs are basically "things you can sent strings to". They are passed along with gcodes for example so modules can answer to those gcodes.
17 // They are usually associated with a command source, but can also be a NullStreamOutput if we just want to ignore whatever is sent
19 class NullStreamOutput
;
24 virtual ~StreamOutput(){}
26 virtual int printf(const char *format
, ...) __attribute__ ((format(printf
, 2, 3)));
27 virtual int _putc(int c
) { return 1; }
28 virtual int _getc(void) { return 0; }
29 virtual int puts(const char* str
) = 0;
30 virtual bool ready() { return true; };
32 static NullStreamOutput NullStream
;
35 class NullStreamOutput
: public StreamOutput
{
37 int puts(const char* str
) { return strlen(str
); }