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tools/nxstyle.c: Add -h for help.

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This commit is contained in:
Gregory Nutt 2018-11-19 08:05:55 -06:00
parent b905888d2c
commit f9fc2131b0
1 changed files with 16 additions and 4 deletions
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20
tools/nxstyle.c
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@ -57,6 +57,7 @@
static void show_usage(char *progname, int exitcode)
{
fprintf(stderr, "Usage: %s [-m <maxline>] <filename>\n", progname);
fprintf(stderr, " %s -h\n", progname);
exit(exitcode);
}
@ -96,7 +97,9 @@ int main(int argc, char **argv, char **envp)
maxline = 78;
filename = argv[1];
/* Usage: nxstyle [-m <maxline>] <filename> */
/* Usage: nxstyle [-m <maxline>] <filename>
* nxstyle -h
*/
if (argc == 4)
{
@ -115,7 +118,14 @@ int main(int argc, char **argv, char **envp)
filename = argv[3];
}
else if (argc != 2)
else if (argc == 2)
{
if (strcmp(argv[1], "-h") == 0)
{
show_usage(argv[0], 0);
}
}
else
{
fprintf(stderr, "Invalid number of arguments\n");
show_usage(argv[0], 1);
@ -230,7 +240,9 @@ int main(int argc, char **argv, char **envp)
default:
{
fprintf(stderr, "Unexpected white space character %02x found at line %d:%d\n", line[n], lineno, n);
fprintf(stderr,
"Unexpected white space character %02x found at line %d:%d\n",
line[n], lineno, n);
}
break;
}
@ -783,7 +795,7 @@ int main(int argc, char **argv, char **envp)
break;
}
/* &<variable> OR &(<expression>)*/
/* &<variable> OR &(<expression>) */
else if (isalpha((int)line[n + 1]) || line[n + 1] == '_' || line[n + 1] == '(')
{