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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
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GPG Key ID: 0BE2750EE612F372
1 changed files with 18 additions and 16 deletions
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24
src/lxc/tools/arguments.c
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@ -97,6 +97,15 @@ static void print_usage(const struct option longopts[],
fprintf(stderr, "Usage: %s ", a_args->progname); fprintf(stderr, "Usage: %s ", a_args->progname);
for (opt = longopts, i = 1; opt->name; opt++, i++) { for (opt = longopts, i = 1; opt->name; opt++, i++) {
fprintf(stderr, "[");
if (isprint(opt->val))
fprintf(stderr, "-%c|", opt->val);
fprintf(stderr, "--%s", opt->name);
if ((opt->has_arg == required_argument) ||
(opt->has_arg == optional_argument)) {
int j; int j;
char *uppername; char *uppername;
@ -107,25 +116,18 @@ static void print_usage(const struct option longopts[],
for (j = 0; uppername[j]; j++) for (j = 0; uppername[j]; j++)
uppername[j] = toupper(uppername[j]); uppername[j] = toupper(uppername[j]);
fprintf(stderr, "[");
if (isprint(opt->val))
fprintf(stderr, "-%c|", opt->val);
fprintf(stderr, "--%s", opt->name);
if (opt->has_arg == required_argument) if (opt->has_arg == required_argument)
fprintf(stderr, "=%s", uppername); fprintf(stderr, "=%s", uppername);
else // optional_argument
if (opt->has_arg == optional_argument)
fprintf(stderr, "[=%s]", uppername); fprintf(stderr, "[=%s]", uppername);
free(uppername);
}
fprintf(stderr, "] "); fprintf(stderr, "] ");
if (!(i % 4)) if (!(i % 4))
fprintf(stderr, "\n\t"); fprintf(stderr, "\n\t");
free(uppername);
} }
fprintf(stderr, "\n"); fprintf(stderr, "\n");