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authorLennart Poettering <lennart@poettering.net>2015-01-07 19:13:48 +0100
committerLennart Poettering <lennart@poettering.net>2015-01-07 19:32:42 +0100
commit0b63e2789f984e84f40bf6e49f5da15c87298ced (patch)
treecd44cc833d1bc8a90f46c0d28c5ce195001eeeaf /src
parent1ed0c19f81fd13cdf283c6def0168ce122a853a9 (diff)
machinectl: prettify "machinectl list" output
Diffstat (limited to 'src')
-rw-r--r--src/machine/machinectl.c60
1 files changed, 52 insertions, 8 deletions
diff --git a/src/machine/machinectl.c b/src/machine/machinectl.c
index be3896a19b..c80114cde8 100644
--- a/src/machine/machinectl.c
+++ b/src/machine/machinectl.c
@@ -74,13 +74,27 @@ static void pager_open_if_enabled(void) {
pager_open(false);
}
+typedef struct MachineInfo {
+ const char *name;
+ const char *class;
+ const char *service;
+} MachineInfo;
+
+static int compare_machine_info(const void *a, const void *b) {
+ const MachineInfo *x = a, *y = b;
+
+ return strcmp(x->name, y->name);
+}
+
static int list_machines(int argc, char *argv[], void *userdata) {
- _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+ size_t max_name = strlen("MACHINE"), max_class = strlen("CLASS"), max_service = strlen("SERVICE");
_cleanup_bus_error_free_ sd_bus_error error = SD_BUS_ERROR_NULL;
+ _cleanup_bus_message_unref_ sd_bus_message *reply = NULL;
+ _cleanup_free_ MachineInfo *machines = NULL;
const char *name, *class, *service, *object;
+ size_t n_machines = 0, n_allocated = 0, j;
sd_bus *bus = userdata;
- unsigned k = 0;
int r;
assert(bus);
@@ -101,17 +115,33 @@ static int list_machines(int argc, char *argv[], void *userdata) {
return r;
}
- if (arg_legend)
- printf("%-32s %-9s %-16s\n", "MACHINE", "CONTAINER", "SERVICE");
-
r = sd_bus_message_enter_container(reply, SD_BUS_TYPE_ARRAY, "(ssso)");
if (r < 0)
return bus_log_parse_error(r);
while ((r = sd_bus_message_read(reply, "(ssso)", &name, &class, &service, &object)) > 0) {
- printf("%-32s %-9s %-16s\n", name, class, service);
+ size_t l;
+
+ if (!GREEDY_REALLOC(machines, n_allocated, n_machines + 1))
+ return log_oom();
+
+ machines[n_machines].name = name;
+ machines[n_machines].class = class;
+ machines[n_machines].service = service;
+
+ l = strlen(name);
+ if (l > max_name)
+ max_name = l;
- k++;
+ l = strlen(class);
+ if (l > max_class)
+ max_class = l;
+
+ l = strlen(service);
+ if (l > max_service)
+ max_service = l;
+
+ n_machines ++;
}
if (r < 0)
return bus_log_parse_error(r);
@@ -120,8 +150,22 @@ static int list_machines(int argc, char *argv[], void *userdata) {
if (r < 0)
return bus_log_parse_error(r);
+ qsort_safe(machines, n_machines, sizeof(MachineInfo), compare_machine_info);
+
+ if (arg_legend)
+ printf("%-*s %-*s %-*s\n",
+ (int) max_name, "MACHINE",
+ (int) max_class, "CLASS",
+ (int) max_service, "SERVICE");
+
+ for (j = 0; j < n_machines; j++)
+ printf("%-*s %-*s %-*s\n",
+ (int) max_name, machines[j].name,
+ (int) max_class, machines[j].class,
+ (int) max_service, machines[j].service);
+
if (arg_legend)
- printf("\n%u machines listed.\n", k);
+ printf("\n%zu machines listed.\n", n_machines);
return 0;
}