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Trivial changes: whitespace and modes. Remote whitespace at the ends of lines. Remove blank lines from the ends of files. Change modes on source files so that they are not executable. Signed-off-by: Dan Cross <cross@gajendra.net>
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 1 ae03a48b 2009-08-15 rsc #include <u.h>

 2 ae03a48b 2009-08-15 rsc #include <libc.h>

 3 ae03a48b 2009-08-15 rsc 

 4 ae03a48b 2009-08-15 rsc void

 5 ae03a48b 2009-08-15 rsc main(int argc, char **argv)

 6 ae03a48b 2009-08-15 rsc {

 7 ae03a48b 2009-08-15 rsc 	Fmt fmt;

 8 ae03a48b 2009-08-15 rsc 	char buf[512];

 9 ae03a48b 2009-08-15 rsc 	char *argv0, *args, *flags, *p, *p0;

10 ae03a48b 2009-08-15 rsc 	int single;

11 ae03a48b 2009-08-15 rsc 	Rune r;

12 fa325e9b 2020-01-10 cross 

13 ae03a48b 2009-08-15 rsc 	argv0 = getenv("0");

14 ae03a48b 2009-08-15 rsc 	if(argv0 == nil) {

15 ae03a48b 2009-08-15 rsc 		if(argc > 1)

16 ae03a48b 2009-08-15 rsc 			argv0 = argv[1];

17 ae03a48b 2009-08-15 rsc 		else

18 ae03a48b 2009-08-15 rsc 			argv0 = "unknown-program-name";

19 ae03a48b 2009-08-15 rsc 	}

20 ae03a48b 2009-08-15 rsc 	if((p = strrchr(argv0, '/')) != nil)

21 ae03a48b 2009-08-15 rsc 		argv0 = p+1;

22 ae03a48b 2009-08-15 rsc 	flags = getenv("flagfmt");

23 ae03a48b 2009-08-15 rsc 	args = getenv("args");

24 fa325e9b 2020-01-10 cross 

25 ae03a48b 2009-08-15 rsc 	if(argv0 == nil){

26 ae03a48b 2009-08-15 rsc 		fprint(2, "aux/usage: $0 not set\n");

27 ae03a48b 2009-08-15 rsc 		exits("$0");

28 ae03a48b 2009-08-15 rsc 	}

29 ae03a48b 2009-08-15 rsc 	if(flags == nil)

30 ae03a48b 2009-08-15 rsc 		flags = "";

31 ae03a48b 2009-08-15 rsc 	if(args == nil)

32 ae03a48b 2009-08-15 rsc 		args = "";

33 ae03a48b 2009-08-15 rsc 

34 ae03a48b 2009-08-15 rsc 	fmtfdinit(&fmt, 2, buf, sizeof buf);

35 ae03a48b 2009-08-15 rsc 	fmtprint(&fmt, "usage: %s", argv0);

36 ae03a48b 2009-08-15 rsc 	if(flags[0]){

37 ae03a48b 2009-08-15 rsc 		single = 0;

38 ae03a48b 2009-08-15 rsc 		for(p=flags; *p; ){

39 ae03a48b 2009-08-15 rsc 			p += chartorune(&r, p);

40 ae03a48b 2009-08-15 rsc 			if(*p == ',' || *p == 0){

41 ae03a48b 2009-08-15 rsc 				if(!single){

42 ae03a48b 2009-08-15 rsc 					fmtprint(&fmt, " [-");

43 ae03a48b 2009-08-15 rsc 					single = 1;

44 ae03a48b 2009-08-15 rsc 				}

45 ae03a48b 2009-08-15 rsc 				fmtprint(&fmt, "%C", r);

46 ae03a48b 2009-08-15 rsc 				if(*p == ',')

47 ae03a48b 2009-08-15 rsc 					p++;

48 ae03a48b 2009-08-15 rsc 				continue;

49 ae03a48b 2009-08-15 rsc 			}

50 ae03a48b 2009-08-15 rsc 			while(*p == ' ')

51 ae03a48b 2009-08-15 rsc 				p++;

52 ae03a48b 2009-08-15 rsc 			if(single){

53 ae03a48b 2009-08-15 rsc 				fmtprint(&fmt, "]");

54 ae03a48b 2009-08-15 rsc 				single = 0;

55 ae03a48b 2009-08-15 rsc 			}

56 ae03a48b 2009-08-15 rsc 			p0 = p;

57 ae03a48b 2009-08-15 rsc 			p = strchr(p0, ',');

58 ae03a48b 2009-08-15 rsc 			if(p == nil)

59 ae03a48b 2009-08-15 rsc 				p = "";

60 ae03a48b 2009-08-15 rsc 			else

61 ae03a48b 2009-08-15 rsc 				*p++ = 0;

62 ae03a48b 2009-08-15 rsc 			fmtprint(&fmt, " [-%C %s]", r, p0);

63 ae03a48b 2009-08-15 rsc 		}

64 ae03a48b 2009-08-15 rsc 		if(single)

65 ae03a48b 2009-08-15 rsc 			fmtprint(&fmt, "]");

66 ae03a48b 2009-08-15 rsc 	}

67 ae03a48b 2009-08-15 rsc 	if(args)

68 ae03a48b 2009-08-15 rsc 		fmtprint(&fmt, " %s", args);

69 ae03a48b 2009-08-15 rsc 	fmtprint(&fmt, "\n");

70 ae03a48b 2009-08-15 rsc 	fmtfdflush(&fmt);

71 ae03a48b 2009-08-15 rsc 	exits("usage");

72 ae03a48b 2009-08-15 rsc }