Merge pull request #24768 from keszybz/table-not-available-2

Adjust table n/a text in more places

16 files changed, 58 insertions, 41 deletions

diff --git a/src/busctl/busctl.c b/src/busctl/busctl.c
index 90e42a21da..f57a5d605d 100644
--- a/src/busctl/busctl.c
+++ b/src/busctl/busctl.c
@@ -209,9 +209,7 @@ static int list_bus_names(int argc, char **argv, void *userdata) {
         if (r < 0)
                 return log_error_errno(r, "Failed to set alignment: %m");
 
-        r = table_set_empty_string(table, "-");
-        if (r < 0)
-                return log_error_errno(r, "Failed to set empty string: %m");
+        table_set_ersatz_string(table, TABLE_ERSATZ_DASH);
 
         r = table_set_sort(table, (size_t) COLUMN_NAME);
         if (r < 0)
diff --git a/src/coredump/coredumpctl.c b/src/coredump/coredumpctl.c
index 6557e98f0a..da0b591c48 100644
--- a/src/coredump/coredumpctl.c
+++ b/src/coredump/coredumpctl.c
@@ -822,7 +822,7 @@ static int dump_list(int argc, char **argv, void *userdata) {
                 (void) table_set_align_percent(t, TABLE_HEADER_CELL(3), 100);
                 (void) table_set_align_percent(t, TABLE_HEADER_CELL(7), 100);
 
-                (void) table_set_empty_string(t, "-");
+                table_set_ersatz_string(t, TABLE_ERSATZ_DASH);
         } else
                 pager_open(arg_pager_flags);
 
diff --git a/src/dissect/dissect.c b/src/dissect/dissect.c
index eeba018364..4d49bad458 100644
--- a/src/dissect/dissect.c
+++ b/src/dissect/dissect.c
@@ -570,7 +570,7 @@ static int action_dissect(DissectedImage *m, LoopDevice *d) {
         if (!t)
                 return log_oom();
 
-        (void) table_set_empty_string(t, "-");
+        table_set_ersatz_string(t, TABLE_ERSATZ_DASH);
         (void) table_set_align_percent(t, table_get_cell(t, 0, 7), 100);
 
         for (PartitionDesignator i = 0; i < _PARTITION_DESIGNATOR_MAX; i++) {
diff --git a/src/hostname/hostnamectl.c b/src/hostname/hostnamectl.c
index a96241c42e..bb014973fb 100644
--- a/src/hostname/hostnamectl.c
+++ b/src/hostname/hostnamectl.c
@@ -92,9 +92,7 @@ static int print_status_info(StatusInfo *i) {
 
         table_set_header(table, false);
 
-        r = table_set_empty_string(table, "n/a");
-        if (r < 0)
-                return log_oom();
+        table_set_ersatz_string(table, TABLE_ERSATZ_UNSET);
 
         r = table_add_many(table,
                            TABLE_STRING, "Static hostname:",
diff --git a/src/locale/localectl.c b/src/locale/localectl.c
index ebbf107432..c23f1fa3f6 100644
--- a/src/locale/localectl.c
+++ b/src/locale/localectl.c
@@ -81,9 +81,7 @@ static int print_status_info(StatusInfo *i) {
 
         table_set_header(table, false);
 
-        r = table_set_empty_string(table, "n/a");
-        if (r < 0)
-                return log_oom();
+        table_set_ersatz_string(table, TABLE_ERSATZ_UNSET);
 
         if (!strv_isempty(kernel_locale)) {
                 log_warning("Warning: Settings on kernel command line override system locale settings in /etc/locale.conf.");
diff --git a/src/machine/machinectl.c b/src/machine/machinectl.c
index d05b4101cc..39e6f18606 100644
--- a/src/machine/machinectl.c
+++ b/src/machine/machinectl.c
@@ -277,7 +277,7 @@ static int list_machines(int argc, char *argv[], void *userdata) {
         if (!table)
                 return log_oom();
 
-        table_set_empty_string(table, "-");
+        table_set_ersatz_string(table, TABLE_ERSATZ_DASH);
         if (!arg_full && arg_max_addresses != ALL_ADDRESSES)
                 table_set_cell_height_max(table, arg_max_addresses);
 
diff --git a/src/network/networkctl.c b/src/network/networkctl.c
index c489ccbf4e..5189ff2280 100644
--- a/src/network/networkctl.c
+++ b/src/network/networkctl.c
@@ -817,8 +817,7 @@ static int list_links(int argc, char *argv[], void *userdata) {
                 table_set_width(table, 0);
 
         table_set_header(table, arg_legend);
-        if (table_set_empty_string(table, "n/a") < 0)
-                return log_oom();
+        table_set_ersatz_string(table, TABLE_ERSATZ_DASH);
 
         assert_se(cell = table_get_cell(table, 0, 0));
         (void) table_set_minimum_width(table, cell, 3);
diff --git a/src/shared/format-table.c b/src/shared/format-table.c
index 47bc90b9fc..b62445faa6 100644
--- a/src/shared/format-table.c
+++ b/src/shared/format-table.c
@@ -133,6 +133,8 @@ struct Table {
         size_t n_cells;
 
         bool header;   /* Whether to show the header row? */
+        TableErsatz ersatz; /* What to show when we have an empty cell or an invalid value that cannot be rendered. */
+
         size_t width;  /* If == 0 format this as wide as necessary. If SIZE_MAX format this to console
                         * width or less wide, but not wider. Otherwise the width to format this table in. */
         size_t cell_height_max; /* Maximum number of lines per cell. (If there are more, ellipsis is shown. If SIZE_MAX then no limit is set, the default. == 0 is not allowed.) */
@@ -149,8 +151,6 @@ struct Table {
         size_t n_json_fields;
 
         bool *reverse_map;
-
-        char *empty_string;
 };
 
 Table *table_new_raw(size_t n_columns) {
@@ -167,6 +167,7 @@ Table *table_new_raw(size_t n_columns) {
                 .header = true,
                 .width = SIZE_MAX,
                 .cell_height_max = SIZE_MAX,
+                .ersatz = TABLE_ERSATZ_EMPTY,
         };
 
         return TAKE_PTR(t);
@@ -242,7 +243,6 @@ Table *table_unref(Table *t) {
         free(t->display_map);
         free(t->sort_map);
         free(t->reverse_map);
-        free(t->empty_string);
 
         for (size_t i = 0; i < t->n_json_fields; i++)
                 free(t->json_fields[i]);
@@ -1089,10 +1089,26 @@ void table_set_cell_height_max(Table *t, size_t height) {
         t->cell_height_max = height;
 }
 
-int table_set_empty_string(Table *t, const char *empty) {
+void table_set_ersatz_string(Table *t, TableErsatz ersatz) {
         assert(t);
+        assert(ersatz >= 0 && ersatz < _TABLE_ERSATZ_MAX);
+
+        t->ersatz = ersatz;
+}
 
-        return free_and_strdup(&t->empty_string, empty);
+static const char* table_ersatz_string(const Table *t) {
+        switch (t->ersatz) {
+        case TABLE_ERSATZ_EMPTY:
+                return "";
+        case TABLE_ERSATZ_DASH:
+                return "-";
+        case TABLE_ERSATZ_UNSET:
+                return "(unset)";
+        case TABLE_ERSATZ_NA:
+                return "n/a";
+        default:
+                assert_not_reached();
+        }
 }
 
 static int table_set_display_all(Table *t) {
@@ -1397,7 +1413,7 @@ static const char *table_data_format(Table *t, TableData *d, bool avoid_uppercas
 
         switch (d->type) {
         case TABLE_EMPTY:
-                return strempty(t->empty_string);
+                return table_ersatz_string(t);
 
         case TABLE_STRING:
         case TABLE_PATH:
@@ -1418,7 +1434,7 @@ static const char *table_data_format(Table *t, TableData *d, bool avoid_uppercas
 
         case TABLE_STRV:
                 if (strv_isempty(d->strv))
-                        return strempty(t->empty_string);
+                        return table_ersatz_string(t);
 
                 d->formatted = strv_join(d->strv, "\n");
                 if (!d->formatted)
@@ -1427,7 +1443,7 @@ static const char *table_data_format(Table *t, TableData *d, bool avoid_uppercas
 
         case TABLE_STRV_WRAPPED: {
                 if (strv_isempty(d->strv))
-                        return strempty(t->empty_string);
+                        return table_ersatz_string(t);
 
                 char *buf = format_strv_width(d->strv, column_width);
                 if (!buf)
@@ -1494,7 +1510,7 @@ static const char *table_data_format(Table *t, TableData *d, bool avoid_uppercas
                         return NULL;
 
                 if (!format_bytes(p, FORMAT_BYTES_MAX, d->size))
-                        return "-";
+                        return table_ersatz_string(t);
 
                 d->formatted = TAKE_PTR(p);
                 break;
@@ -1509,7 +1525,7 @@ static const char *table_data_format(Table *t, TableData *d, bool avoid_uppercas
                         return NULL;
 
                 if (!format_bytes_full(p, FORMAT_BYTES_MAX, d->size, 0))
-                        return "-";
+                        return table_ersatz_string(t);
 
                 n = strlen(p);
                 strscpy(p + n, FORMAT_BYTES_MAX + 2 - n, "bps");
@@ -1710,7 +1726,7 @@ static const char *table_data_format(Table *t, TableData *d, bool avoid_uppercas
                 char *p;
 
                 if (!uid_is_valid(d->uid))
-                        return "-";
+                        return table_ersatz_string(t);
 
                 p = new(char, DECIMAL_STR_WIDTH(d->uid) + 1);
                 if (!p)
@@ -1725,7 +1741,7 @@ static const char *table_data_format(Table *t, TableData *d, bool avoid_uppercas
                 char *p;
 
                 if (!gid_is_valid(d->gid))
-                        return "-";
+                        return table_ersatz_string(t);
 
                 p = new(char, DECIMAL_STR_WIDTH(d->gid) + 1);
                 if (!p)
@@ -1740,7 +1756,7 @@ static const char *table_data_format(Table *t, TableData *d, bool avoid_uppercas
                 char *p;
 
                 if (!pid_is_valid(d->pid))
-                        return "-";
+                        return table_ersatz_string(t);
 
                 p = new(char, DECIMAL_STR_WIDTH(d->pid) + 1);
                 if (!p)
@@ -1757,7 +1773,7 @@ static const char *table_data_format(Table *t, TableData *d, bool avoid_uppercas
 
                 suffix = signal_to_string(d->int_val);
                 if (!suffix)
-                        return "-";
+                        return table_ersatz_string(t);
 
                 p = strjoin("SIG", suffix);
                 if (!p)
@@ -1771,7 +1787,7 @@ static const char *table_data_format(Table *t, TableData *d, bool avoid_uppercas
                 char *p;
 
                 if (d->mode == MODE_INVALID)
-                        return "-";
+                        return table_ersatz_string(t);
 
                 p = new(char, 4 + 1);
                 if (!p)
diff --git a/src/shared/format-table.h b/src/shared/format-table.h
index 6f60669406..3a7c2774b6 100644
--- a/src/shared/format-table.h
+++ b/src/shared/format-table.h
@@ -64,6 +64,14 @@ typedef enum TableDataType {
         _TABLE_DATA_TYPE_INVALID = -EINVAL,
 } TableDataType;
 
+typedef enum TableErsatz {
+        TABLE_ERSATZ_EMPTY,
+        TABLE_ERSATZ_DASH,
+        TABLE_ERSATZ_UNSET,
+        TABLE_ERSATZ_NA,
+        _TABLE_ERSATZ_MAX,
+} TableErsatz;
+
 typedef struct Table Table;
 typedef struct TableCell TableCell;
 
@@ -102,7 +110,7 @@ int table_add_many_internal(Table *t, TableDataType first_type, ...);
 void table_set_header(Table *table, bool b);
 void table_set_width(Table *t, size_t width);
 void table_set_cell_height_max(Table *t, size_t height);
-int table_set_empty_string(Table *t, const char *empty);
+void table_set_ersatz_string(Table *t, TableErsatz ersatz);
 int table_set_display_internal(Table *t, size_t first_column, ...);
 #define table_set_display(...) table_set_display_internal(__VA_ARGS__, SIZE_MAX)
 int table_set_sort_internal(Table *t, size_t first_column, ...);
diff --git a/src/sysext/sysext.c b/src/sysext/sysext.c
index e0f1fa7f17..0875099d5f 100644
--- a/src/sysext/sysext.c
+++ b/src/sysext/sysext.c
@@ -166,7 +166,7 @@ static int verb_status(int argc, char **argv, void *userdata) {
         if (!t)
                 return log_oom();
 
-        (void) table_set_empty_string(t, "-");
+        table_set_ersatz_string(t, TABLE_ERSATZ_DASH);
 
         STRV_FOREACH(p, arg_hierarchies) {
                 _cleanup_free_ char *resolved = NULL, *f = NULL, *buf = NULL;
diff --git a/src/systemctl/systemctl-list-jobs.c b/src/systemctl/systemctl-list-jobs.c
index f9eba23683..a752173e4e 100644
--- a/src/systemctl/systemctl-list-jobs.c
+++ b/src/systemctl/systemctl-list-jobs.c
@@ -83,7 +83,7 @@ static int output_jobs_list(sd_bus *bus, const struct job_info* jobs, unsigned n
         if (arg_full)
                 table_set_width(table, 0);
 
-        (void) table_set_empty_string(table, "-");
+        table_set_ersatz_string(table, TABLE_ERSATZ_DASH);
 
         for (const struct job_info *j = jobs; j < jobs + n; j++) {
                 if (streq(j->state, "running"))
diff --git a/src/systemctl/systemctl-list-machines.c b/src/systemctl/systemctl-list-machines.c
index 121d5ab9ce..4407d2598a 100644
--- a/src/systemctl/systemctl-list-machines.c
+++ b/src/systemctl/systemctl-list-machines.c
@@ -171,7 +171,7 @@ static int output_machines_list(struct machine_info *machine_infos, unsigned n)
         if (arg_full)
                 table_set_width(table, 0);
 
-        (void) table_set_empty_string(table, "-");
+        table_set_ersatz_string(table, TABLE_ERSATZ_DASH);
 
         for (struct machine_info *m = machine_infos; m < machine_infos + n; m++) {
                 _cleanup_free_ char *mname = NULL;
diff --git a/src/systemctl/systemctl-list-unit-files.c b/src/systemctl/systemctl-list-unit-files.c
index fa7a789b28..96b22041f4 100644
--- a/src/systemctl/systemctl-list-unit-files.c
+++ b/src/systemctl/systemctl-list-unit-files.c
@@ -62,7 +62,7 @@ static int output_unit_file_list(const UnitFileList *units, unsigned c) {
         if (arg_full)
                 table_set_width(table, 0);
 
-        (void) table_set_empty_string(table, "-");
+        table_set_ersatz_string(table, TABLE_ERSATZ_DASH);
 
         for (const UnitFileList *u = units; u < units + c; u++) {
                 const char *on_underline = NULL, *on_unit_color = NULL, *id;
diff --git a/src/systemctl/systemctl-list-units.c b/src/systemctl/systemctl-list-units.c
index 5a1311f5ea..6bfaf97236 100644
--- a/src/systemctl/systemctl-list-units.c
+++ b/src/systemctl/systemctl-list-units.c
@@ -120,7 +120,7 @@ static int output_units_list(const UnitInfo *unit_infos, size_t c) {
         if (arg_full)
                 table_set_width(table, 0);
 
-        (void) table_set_empty_string(table, "-");
+        table_set_ersatz_string(table, TABLE_ERSATZ_DASH);
 
         for (const UnitInfo *u = unit_infos; unit_infos && (size_t) (u - unit_infos) < c; u++) {
                 _cleanup_free_ char *j = NULL;
@@ -381,7 +381,7 @@ static int output_sockets_list(struct socket_info *socket_infos, size_t cs) {
         if (arg_full)
                 table_set_width(table, 0);
 
-        (void) table_set_empty_string(table, "-");
+        table_set_ersatz_string(table, TABLE_ERSATZ_DASH);
 
         for (struct socket_info *s = socket_infos; s < socket_infos + cs; s++) {
                 _cleanup_free_ char *j = NULL;
@@ -612,7 +612,7 @@ static int output_timers_list(struct timer_info *timer_infos, size_t n) {
         if (arg_full)
                 table_set_width(table, 0);
 
-        (void) table_set_empty_string(table, "-");
+        table_set_ersatz_string(table, TABLE_ERSATZ_DASH);
 
         for (struct timer_info *t = timer_infos; t < timer_infos + n; t++) {
                 _cleanup_free_ char *j = NULL, *activates = NULL;
@@ -844,7 +844,7 @@ static int output_automounts_list(struct automount_info *infos, size_t n_infos)
         if (arg_full)
                 table_set_width(table, 0);
 
-        (void) table_set_empty_string(table, "-");
+        table_set_ersatz_string(table, TABLE_ERSATZ_DASH);
 
         for (struct automount_info *info = infos; info < infos + n_infos; info++) {
                 _cleanup_free_ char *j = NULL;
diff --git a/src/sysupdate/sysupdate.c b/src/sysupdate/sysupdate.c
index c24ae532dd..944ac41a41 100644
--- a/src/sysupdate/sysupdate.c
+++ b/src/sysupdate/sysupdate.c
@@ -510,7 +510,7 @@ static int context_show_version(Context *c, const char *version) {
         (void) table_set_align_percent(t, table_get_cell(t, 0, 6), 100);
         (void) table_set_align_percent(t, table_get_cell(t, 0, 7), 100);
         (void) table_set_align_percent(t, table_get_cell(t, 0, 8), 100);
-        (void) table_set_empty_string(t, "-");
+        table_set_ersatz_string(t, TABLE_ERSATZ_DASH);
 
         /* Determine if the target will make use of partition/fs attributes for any of the transfers */
         for (size_t n = 0; n < c->n_transfers; n++) {
diff --git a/src/userdb/userdbctl.c b/src/userdb/userdbctl.c
index 5e9bce3bae..6afec0cda2 100644
--- a/src/userdb/userdbctl.c
+++ b/src/userdb/userdbctl.c
@@ -354,7 +354,7 @@ static int display_user(int argc, char *argv[], void *userdata) {
 
                 (void) table_set_align_percent(table, table_get_cell(table, 0, 3), 100);
                 (void) table_set_align_percent(table, table_get_cell(table, 0, 4), 100);
-                (void) table_set_empty_string(table, "-");
+                table_set_ersatz_string(table, TABLE_ERSATZ_DASH);
                 (void) table_set_sort(table, (size_t) 3, (size_t) 8);
                 (void) table_set_display(table, (size_t) 0, (size_t) 1, (size_t) 2, (size_t) 3, (size_t) 4, (size_t) 5, (size_t) 6, (size_t) 7);
         }
@@ -657,7 +657,7 @@ static int display_group(int argc, char *argv[], void *userdata) {
                         return log_oom();
 
                 (void) table_set_align_percent(table, table_get_cell(table, 0, 3), 100);
-                (void) table_set_empty_string(table, "-");
+                table_set_ersatz_string(table, TABLE_ERSATZ_DASH);
                 (void) table_set_sort(table, (size_t) 3, (size_t) 5);
                 (void) table_set_display(table, (size_t) 0, (size_t) 1, (size_t) 2, (size_t) 3, (size_t) 4);
         }