1 files changed, 49 insertions, 0 deletions

diff --git a/sway/commands/bar/output.c b/sway/commands/bar/output.c
new file mode 100644
index 00000000..f7ca0aa4
--- /dev/null
+++ b/sway/commands/bar/output.c
@@ -0,0 +1,49 @@
+#define _XOPEN_SOURCE 500
+#include <stdbool.h>
+#include <string.h>
+#include "sway/commands.h"
+#include "list.h"
+#include "log.h"
+
+struct cmd_results *bar_cmd_output(int argc, char **argv) {
+        struct cmd_results *error = NULL;
+        if ((error = checkarg(argc, "output", EXPECTED_EQUAL_TO, 1))) {
+                return error;
+        }
+        if (!config->current_bar) {
+                return cmd_results_new(CMD_FAILURE, "output", "No bar defined.");
+        }
+
+        const char *output = argv[0];
+        list_t *outputs = config->current_bar->outputs;
+        if (!outputs) {
+                outputs = create_list();
+                config->current_bar->outputs = outputs;
+        }
+
+        bool add_output = true;
+        if (strcmp("*", output) == 0) {
+                // remove all previous defined outputs and replace with '*'
+                for (int i = 0; i < outputs->length; ++i) {
+                        free(outputs->items[i]);
+                        list_del(outputs, i);
+                }
+        } else {
+                // only add output if not already defined with either the same
+                // name or as '*'
+                for (int i = 0; i < outputs->length; ++i) {
+                        const char *find = outputs->items[i];
+                        if (strcmp("*", find) == 0 || strcmp(output, find) == 0) {
+                                add_output = false;
+                                break;
+                        }
+                }
+        }
+
+        if (add_output) {
+                list_add(outputs, strdup(output));
+                wlr_log(L_DEBUG, "Adding bar: '%s' to output '%s'",
+                                config->current_bar->id, output);
+        }
+        return cmd_results_new(CMD_SUCCESS, NULL, NULL);
+}