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arguments: improve some operations

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Signed-off-by: Donghwa Jeong <dh48.jeong@samsung.com>
This commit is contained in:
Donghwa Jeong 2018-06-11 11:10:58 +09:00
parent a810dc80dd
commit 97d7e88f9a
No known key found for this signature in database
GPG Key ID: 0BE2750EE612F372
1 changed files with 18 additions and 16 deletions
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34
src/lxc/tools/arguments.c
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@ -97,16 +97,6 @@ static void print_usage(const struct option longopts[],
fprintf(stderr, "Usage: %s ", a_args->progname);
for (opt = longopts, i = 1; opt->name; opt++, i++) {
int j;
char *uppername;
uppername = strdup(opt->name);
if (!uppername)
exit(-ENOMEM);
for (j = 0; uppername[j]; j++)
uppername[j] = toupper(uppername[j]);
fprintf(stderr, "[");
if (isprint(opt->val))
@ -114,18 +104,30 @@ static void print_usage(const struct option longopts[],
fprintf(stderr, "--%s", opt->name);
if (opt->has_arg == required_argument)
fprintf(stderr, "=%s", uppername);
if ((opt->has_arg == required_argument) ||
(opt->has_arg == optional_argument)) {
int j;
char *uppername;
if (opt->has_arg == optional_argument)
fprintf(stderr, "[=%s]", uppername);
uppername = strdup(opt->name);
if (!uppername)
exit(-ENOMEM);
for (j = 0; uppername[j]; j++)
uppername[j] = toupper(uppername[j]);
if (opt->has_arg == required_argument)
fprintf(stderr, "=%s", uppername);
else // optional_argument
fprintf(stderr, "[=%s]", uppername);
free(uppername);
}
fprintf(stderr, "] ");
if (!(i % 4))
fprintf(stderr, "\n\t");
free(uppername);
}
fprintf(stderr, "\n");