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systemctl: skip JOBS column if no jobs

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Output is very constrained. This change saves 4 columns in the common
case.
This commit is contained in:
Zbigniew Jędrzejewski-Szmek 2012-10-28 13:22:37 +01:00
parent 35cdd0437d
commit ccd413871b
1 changed files with 18 additions and 10 deletions
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28
src/systemctl/systemctl.c
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@ -321,6 +321,7 @@ static bool output_show_unit(const struct unit_info *u) {
static void output_units_list(const struct unit_info *unit_infos, unsigned c) {
unsigned id_len, max_id_len, active_len, sub_len, job_len, desc_len, n_shown = 0;
const struct unit_info *u;
int job_count = 0;
max_id_len = sizeof("UNIT")-1;
active_len = sizeof("ACTIVE")-1;
@ -335,14 +336,18 @@ static void output_units_list(const struct unit_info *unit_infos, unsigned c) {
max_id_len = MAX(max_id_len, strlen(u->id));
active_len = MAX(active_len, strlen(u->active_state));
sub_len = MAX(sub_len, strlen(u->sub_state));
if (u->job_id != 0)
if (u->job_id != 0) {
job_len = MAX(job_len, strlen(u->job_type));
job_count++;
}
}
if (!arg_full) {
unsigned basic_len;
id_len = MIN(max_id_len, 25);
basic_len = 5 + id_len + 6 + active_len + sub_len + job_len;
basic_len = 5 + id_len + 5 + active_len + sub_len;
if (job_count)
basic_len += job_len + 1;
if (basic_len < (unsigned) columns()) {
unsigned extra_len, incr;
extra_len = columns() - basic_len;
@ -371,8 +376,10 @@ static void output_units_list(const struct unit_info *unit_infos, unsigned c) {
continue;
if (!n_shown && !arg_no_legend) {
printf("%-*s %-6s %-*s %-*s %-*s ", id_len, "UNIT", "LOAD",
active_len, "ACTIVE", sub_len, "SUB", job_len, "JOB");
printf("%-*s %-6s %-*s %-*s ", id_len, "UNIT", "LOAD",
active_len, "ACTIVE", sub_len, "SUB");
if (job_count)
printf("%-*s ", job_len, "JOB");
if (!arg_full && arg_no_pager)
printf("%.*s\n", desc_len, "DESCRIPTION");
else
@ -395,12 +402,12 @@ static void output_units_list(const struct unit_info *unit_infos, unsigned c) {
e = arg_full ? NULL : ellipsize(u->id, id_len, 33);
printf("%-*s %s%-6s%s %s%-*s %-*s%s %-*s ",
printf("%-*s %s%-6s%s %s%-*s %-*s%s %-*s",
id_len, e ? e : u->id,
on_loaded, u->load_state, off_loaded,
on_active, active_len, u->active_state,
sub_len, u->sub_state, off_active,
job_len, u->job_id ? u->job_type : "");
job_count ? job_len + 1 : 0, u->job_id ? u->job_type : "");
if (!arg_full && arg_no_pager)
printf("%.*s\n", desc_len, u->description);
else
@ -415,8 +422,9 @@ static void output_units_list(const struct unit_info *unit_infos, unsigned c) {
if (n_shown) {
printf("\nLOAD = Reflects whether the unit definition was properly loaded.\n"
"ACTIVE = The high-level unit activation state, i.e. generalization of SUB.\n"
"SUB = The low-level unit activation state, values depend on unit type.\n"
"JOB = Pending job for the unit.\n\n");
"SUB = The low-level unit activation state, values depend on unit type.\n");
if (job_count)
printf("JOB = Pending job for the unit.\n");
on = ansi_highlight(true);
off = ansi_highlight(false);
} else {
@ -425,11 +433,11 @@ static void output_units_list(const struct unit_info *unit_infos, unsigned c) {
}
if (arg_all)
printf("%s%u loaded units listed.%s\n"
printf("\n%s%u loaded units listed.%s\n"
"To show all installed unit files use 'systemctl list-unit-files'.\n",
on, n_shown, off);
else
printf("%s%u loaded units listed.%s Pass --all to see loaded but inactive units, too.\n"
printf("\n%s%u loaded units listed.%s Pass --all to see loaded but inactive units, too.\n"
"To show all installed unit files use 'systemctl list-unit-files'.\n",
on, n_shown, off);
}