1 /*

2 * Copyright (C) 2010 Gregor Richards

3 *

4 * Permission is hereby granted, free of charge, to any person obtaining a copy

5 * of this software and associated documentation files (the "Software"), to deal

6 * in the Software without restriction, including without limitation the rights

7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell

8 * copies of the Software, and to permit persons to whom the Software is

9 * furnished to do so, subject to the following conditions:

10 *

11 * The above copyright notice and this permission notice shall be included in

12 * all copies or substantial portions of the Software.

13 *

14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR

15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE

17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER

18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,

19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN

20 * THE SOFTWARE.

21 */

22

23 #include <stdio.h>

24 #include <stdlib.h>

25 #include <string.h>

26

27 int main(int argc, char **argv)

28 {

29 char buf[1024], *v;

30 int red;

31

32 if (argc != 2) {

33 fprintf(stderr, "Use: chgvel <1/reduction>\n");

34 return 1;

35 }

36 red = atoi(argv[1]);

37

38 while (fgets(buf, 1024, stdin)) {

39 if (strstr(buf, " On ") != NULL || strstr(buf, " Off ") != NULL) {

40 if ((v = strstr(buf, "v=")) != NULL) {

41 sprintf(v + 2, "%d\n", atoi(v + 2) * (red - 1) / red + (128/red));

42 }

43 }

44 printf("%s", buf);

45 }

46 return 0;

47 }