return table_get(t, cell);
}
+
+static int table_data_to_json(TableData *d, JsonVariant **ret) {
+
+ switch (d->type) {
+
+ case TABLE_EMPTY:
+ return json_variant_new_null(ret);
+
+ case TABLE_STRING:
+ return json_variant_new_string(ret, d->string);
+
+ case TABLE_BOOLEAN:
+ return json_variant_new_boolean(ret, d->boolean);
+
+ case TABLE_TIMESTAMP:
+ if (d->timestamp == USEC_INFINITY)
+ return json_variant_new_null(ret);
+
+ return json_variant_new_unsigned(ret, d->timestamp);
+
+ case TABLE_TIMESPAN:
+ if (d->timespan == USEC_INFINITY)
+ return json_variant_new_null(ret);
+
+ return json_variant_new_unsigned(ret, d->timespan);
+
+ case TABLE_SIZE:
+ if (d->size == (size_t) -1)
+ return json_variant_new_null(ret);
+
+ return json_variant_new_unsigned(ret, d->size);
+
+ case TABLE_UINT32:
+ return json_variant_new_unsigned(ret, d->uint32);
+
+ case TABLE_UINT64:
+ return json_variant_new_unsigned(ret, d->uint64);
+
+ case TABLE_PERCENT:
+ return json_variant_new_integer(ret, d->percent);
+
+ default:
+ return -EINVAL;
+ }
+}
+
+int table_to_json(Table *t, JsonVariant **ret) {
+ JsonVariant **rows = NULL, **elements = NULL;
+ _cleanup_free_ size_t *sorted = NULL;
+ size_t n_rows, i, j, display_columns;
+ int r;
+
+ assert(t);
+
+ /* Ensure we have no incomplete rows */
+ assert(t->n_cells % t->n_columns == 0);
+
+ n_rows = t->n_cells / t->n_columns;
+ assert(n_rows > 0); /* at least the header row must be complete */
+
+ if (t->sort_map) {
+ /* If sorting is requested, let's calculate an index table we use to lookup the actual index to display with. */
+
+ sorted = new(size_t, n_rows);
+ if (!sorted) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ for (i = 0; i < n_rows; i++)
+ sorted[i] = i * t->n_columns;
+
+ typesafe_qsort_r(sorted, n_rows, table_data_compare, t);
+ }
+
+ if (t->display_map)
+ display_columns = t->n_display_map;
+ else
+ display_columns = t->n_columns;
+ assert(display_columns > 0);
+
+ elements = new0(JsonVariant*, display_columns * 2);
+ if (!elements) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ for (j = 0; j < display_columns; j++) {
+ TableData *d;
+
+ assert_se(d = t->data[t->display_map ? t->display_map[j] : j]);
+
+ r = table_data_to_json(d, elements + j*2);
+ if (r < 0)
+ goto finish;
+ }
+
+ rows = new0(JsonVariant*, n_rows-1);
+ if (!rows) {
+ r = -ENOMEM;
+ goto finish;
+ }
+
+ for (i = 1; i < n_rows; i++) {
+ TableData **row;
+
+ if (sorted)
+ row = t->data + sorted[i];
+ else
+ row = t->data + i * t->n_columns;
+
+ for (j = 0; j < display_columns; j++) {
+ TableData *d;
+ size_t k;
+
+ assert_se(d = row[t->display_map ? t->display_map[j] : j]);
+
+ k = j*2+1;
+ elements[k] = json_variant_unref(elements[k]);
+
+ r = table_data_to_json(d, elements + k);
+ if (r < 0)
+ goto finish;
+ }
+
+ r = json_variant_new_object(rows + i - 1, elements, display_columns * 2);
+ if (r < 0)
+ goto finish;
+ }
+
+ r = json_variant_new_array(ret, rows, n_rows - 1);
+
+finish:
+ if (rows) {
+ json_variant_unref_many(rows, n_rows-1);
+ free(rows);
+ }
+
+ if (elements) {
+ json_variant_unref_many(elements, display_columns*2);
+ free(elements);
+ }
+
+ return r;
+}
+
+int table_print_json(Table *t, FILE *f, JsonFormatFlags flags) {
+ _cleanup_(json_variant_unrefp) JsonVariant *v = NULL;
+ int r;
+
+ assert(t);
+
+ if (!f)
+ f = stdout;
+
+ r = table_to_json(t, &v);
+ if (r < 0)
+ return r;
+
+ json_variant_dump(v, flags, f, NULL);
+
+ return fflush_and_check(f);
+}