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machinectl: hide legend in a case when no data (#3839)

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For this moment machinectl prints legend and count of machines/images/etc.
But in a case when we have no images,machines,etc., there is no sense to
show legend:

~$ machinectl
MACHINE CLASS SERVICE

0 machines listed.

Let's print only 'No machines', 'No images', 'No transfers' in this case.
This commit is contained in:
0xAX 2016-08-01 18:39:27 +03:00 committed by Zbigniew Jędrzejewski-Szmek
parent aa0c34279e
commit a912ab0474
1 changed files with 12 additions and 6 deletions
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18
src/machine/machinectl.c
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@ -185,7 +185,7 @@ static int list_machines(int argc, char *argv[], void *userdata) {
qsort_safe(machines, n_machines, sizeof(MachineInfo), compare_machine_info);
if (arg_legend)
if (arg_legend && n_machines > 0)
printf("%-*s %-*s %-*s\n",
(int) max_name, "MACHINE",
(int) max_class, "CLASS",
@ -197,8 +197,10 @@ static int list_machines(int argc, char *argv[], void *userdata) {
(int) max_class, machines[j].class,
(int) max_service, machines[j].service);
if (arg_legend)
if (arg_legend && n_machines > 0)
printf("\n%zu machines listed.\n", n_machines);
else
printf("No machines.\n");
return 0;
}
@ -305,7 +307,7 @@ static int list_images(int argc, char *argv[], void *userdata) {
qsort_safe(images, n_images, sizeof(ImageInfo), compare_image_info);
if (arg_legend)
if (arg_legend && n_images > 0)
printf("%-*s %-*s %-3s %-*s %-*s %-*s\n",
(int) max_name, "NAME",
(int) max_type, "TYPE",
@ -326,8 +328,10 @@ static int list_images(int argc, char *argv[], void *userdata) {
(int) max_mtime, strna(format_timestamp(mtime_buf, sizeof(mtime_buf), images[j].mtime)));
}
if (arg_legend)
if (arg_legend && n_images > 0)
printf("\n%zu images listed.\n", n_images);
else
printf("No images.\n");
return 0;
}
@ -2314,7 +2318,7 @@ static int list_transfers(int argc, char *argv[], void *userdata) {
qsort_safe(transfers, n_transfers, sizeof(TransferInfo), compare_transfer_info);
if (arg_legend)
if (arg_legend && n_transfers > 0)
printf("%-*s %-*s %-*s %-*s %-*s\n",
(int) MAX(2U, DECIMAL_STR_WIDTH(max_id)), "ID",
(int) 7, "PERCENT",
@ -2330,8 +2334,10 @@ static int list_transfers(int argc, char *argv[], void *userdata) {
(int) max_local, transfers[j].local,
(int) max_remote, transfers[j].remote);
if (arg_legend)
if (arg_legend && n_transfers > 0)
printf("\n%zu transfers listed.\n", n_transfers);
else
printf("No transfers.\n");
return 0;
}